/**
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version. 
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2008 Blender Foundation.
 * All rights reserved.
 * 
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#include <float.h>
#include <limits.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

#include "MEM_guardedalloc.h"

#include "DNA_object_types.h"
#include "DNA_scene_types.h"

#include "BLI_math.h"
#include "BLI_blenlib.h"
#include "PIL_time.h"

#include "BKE_colortools.h"
#include "BKE_context.h"
#include "BKE_idprop.h"
#include "BKE_report.h"
#include "BKE_texture.h"

#include "ED_screen.h"
#include "ED_util.h"
#include "ED_keyframing.h"

#include "UI_interface.h"

#include "BLF_api.h"

#include "interface_intern.h"

#include "RNA_access.h"

#include "WM_api.h"
#include "WM_types.h"

/***************** structs and defines ****************/

#define BUTTON_TOOLTIP_DELAY		0.500
#define BUTTON_FLASH_DELAY			0.020
#define BUTTON_AUTO_OPEN_THRESH		0.3
#define BUTTON_MOUSE_TOWARDS_THRESH	1.0

typedef enum uiButtonActivateType {
	BUTTON_ACTIVATE_OVER,
	BUTTON_ACTIVATE,
	BUTTON_ACTIVATE_APPLY,
	BUTTON_ACTIVATE_TEXT_EDITING,
	BUTTON_ACTIVATE_OPEN
} uiButtonActivateType;

typedef enum uiHandleButtonState {
	BUTTON_STATE_INIT,
	BUTTON_STATE_HIGHLIGHT,
	BUTTON_STATE_WAIT_FLASH,
	BUTTON_STATE_WAIT_RELEASE,
	BUTTON_STATE_WAIT_KEY_EVENT,
	BUTTON_STATE_NUM_EDITING,
	BUTTON_STATE_TEXT_EDITING,
	BUTTON_STATE_TEXT_SELECTING,
	BUTTON_STATE_MENU_OPEN,
	BUTTON_STATE_WAIT_DRAG,
	BUTTON_STATE_EXIT
} uiHandleButtonState;

typedef struct uiHandleButtonData {
	wmWindowManager *wm;
	wmWindow *window;
	ARegion *region;

	int interactive;

	/* overall state */
	uiHandleButtonState state;
	int cancel, escapecancel, retval;
	int applied, appliedinteractive;
	wmTimer *flashtimer;

	/* edited value */
	char *str, *origstr;
	double value, origvalue, startvalue;
	float vec[3], origvec[3];
	int togdual, togonly;
	ColorBand *coba;
	CurveMapping *cumap;

	/* tooltip */
	ARegion *tooltip;
	wmTimer *tooltiptimer;
	
	/* auto open */
	int used_mouse;
	wmTimer *autoopentimer;

	/* text selection/editing */
	int maxlen, selextend, selstartx;

	/* number editing / dragging */
	int draglastx, draglasty;
	int dragstartx, dragstarty;
	int dragchange, draglock, dragsel;
	float dragf, dragfstart;
	CBData *dragcbd;

	/* menu open */
	uiPopupBlockHandle *menu;
	int menuretval;
	
	/* search box */
	ARegion *searchbox;

	/* post activate */
	uiButtonActivateType posttype;
	uiBut *postbut;
} uiHandleButtonData;

typedef struct uiAfterFunc {
	struct uiAfterFunc *next, *prev;

	uiButHandleFunc func;
	void *func_arg1;
	void *func_arg2;
	void *func_arg3;
	
	uiButHandleNFunc funcN;
	void *func_argN;

	uiButHandleRenameFunc rename_func;
	void *rename_arg1;
	void *rename_orig;
	
	uiBlockHandleFunc handle_func;
	void *handle_func_arg;
	int retval;

	uiMenuHandleFunc butm_func;
	void *butm_func_arg;
	int a2;

	wmOperatorType *optype;
	int opcontext;
	PointerRNA *opptr;

	PointerRNA rnapoin;
	PropertyRNA *rnaprop;

	bContextStore *context;

	char undostr[512];

	int autokey;
} uiAfterFunc;

static int ui_but_contains_pt(uiBut *but, int mx, int my);
static int ui_mouse_inside_button(ARegion *ar, uiBut *but, int x, int y);
static void button_activate_state(bContext *C, uiBut *but, uiHandleButtonState state);
static int ui_handler_region_menu(bContext *C, wmEvent *event, void *userdata);
static void ui_handle_button_activate(bContext *C, ARegion *ar, uiBut *but, uiButtonActivateType type);
static void button_timers_tooltip_remove(bContext *C, uiBut *but);

/* ******************** menu navigation helpers ************** */

static int ui_but_editable(uiBut *but)
{
	return ELEM5(but->type, LABEL, SEPR, ROUNDBOX, LISTBOX, PROGRESSBAR);
}

static uiBut *ui_but_prev(uiBut *but)
{
	while(but->prev) {
		but= but->prev;
		if(!ui_but_editable(but)) return but;
	}
	return NULL;
}

static uiBut *ui_but_next(uiBut *but)
{
	while(but->next) {
		but= but->next;
		if(!ui_but_editable(but)) return but;
	}
	return NULL;
}

static uiBut *ui_but_first(uiBlock *block)
{
	uiBut *but;
	
	but= block->buttons.first;
	while(but) {
		if(!ui_but_editable(but)) return but;
		but= but->next;
	}
	return NULL;
}

static uiBut *ui_but_last(uiBlock *block)
{
	uiBut *but;
	
	but= block->buttons.last;
	while(but) {
		if(!ui_but_editable(but)) return but;
		but= but->prev;
	}
	return NULL;
}

static int ui_is_a_warp_but(uiBut *but)
{
	if(U.uiflag & USER_CONTINUOUS_MOUSE)
		if(ELEM3(but->type, NUM, NUMABS, HSVCIRCLE))
			return TRUE;

	return FALSE;
}

/* ********************** button apply/revert ************************/

static ListBase UIAfterFuncs = {NULL, NULL};

static void ui_apply_but_func(bContext *C, uiBut *but)
{
	uiAfterFunc *after;
	uiBlock *block= but->block;

	/* these functions are postponed and only executed after all other
	 * handling is done, i.e. menus are closed, in order to avoid conflicts
	 * with these functions removing the buttons we are working with */

	if(but->func || but->funcN || block->handle_func || but->rename_func || (but->type == BUTM && block->butm_func) || but->optype || but->rnaprop) {
		after= MEM_callocN(sizeof(uiAfterFunc), "uiAfterFunc");

		if(but->func && ELEM(but, but->func_arg1, but->func_arg2)) {
			/* exception, this will crash due to removed button otherwise */
			but->func(C, but->func_arg1, but->func_arg2);
		}
		else
			after->func= but->func;

		after->func_arg1= but->func_arg1;
		after->func_arg2= but->func_arg2;
		after->func_arg3= but->func_arg3;

		after->funcN= but->funcN;
		after->func_argN= but->func_argN;

		after->rename_func= but->rename_func;
		after->rename_arg1= but->rename_arg1;
		after->rename_orig= but->rename_orig; /* needs free! */
		
		after->handle_func= block->handle_func;
		after->handle_func_arg= block->handle_func_arg;
		after->retval= but->retval;

		if(but->type == BUTM) {
			after->butm_func= block->butm_func;
			after->butm_func_arg= block->butm_func_arg;
			after->a2= but->a2;
		}

		after->optype= but->optype;
		after->opcontext= but->opcontext;
		after->opptr= but->opptr;

		after->rnapoin= but->rnapoin;
		after->rnaprop= but->rnaprop;

		if(but->context)
			after->context= CTX_store_copy(but->context);

		but->optype= NULL;
		but->opcontext= 0;
		but->opptr= NULL;

		BLI_addtail(&UIAfterFuncs, after);
	}
}

static void ui_apply_autokey_undo(bContext *C, uiBut *but)
{
	Scene *scene= CTX_data_scene(C);
	uiAfterFunc *after;
	char *str= NULL;

	if(but->flag & UI_BUT_UNDO) {
		/* define which string to use for undo */
		if ELEM(but->type, LINK, INLINK) str= "Add button link";
		else if ELEM(but->type, MENU, ICONTEXTROW) str= but->drawstr;
		else if(but->drawstr[0]) str= but->drawstr;
		else str= but->tip;
	}

	/* delayed, after all other funcs run, popups are closed, etc */
	if(str) {
		after= MEM_callocN(sizeof(uiAfterFunc), "uiAfterFunc");
		BLI_strncpy(after->undostr, str, sizeof(after->undostr));
		BLI_addtail(&UIAfterFuncs, after);
	}

	/* try autokey */
	ui_but_anim_autokey(C, but, scene, scene->r.cfra);
}

static void ui_apply_but_funcs_after(bContext *C)
{
	uiAfterFunc *afterf, after;
	PointerRNA opptr;
	ListBase funcs;

	/* copy to avoid recursive calls */
	funcs= UIAfterFuncs;
	UIAfterFuncs.first= UIAfterFuncs.last= NULL;

	for(afterf=funcs.first; afterf; afterf=after.next) {
		after= *afterf; /* copy to avoid memleak on exit() */
		BLI_freelinkN(&funcs, afterf);

		if(after.context)
			CTX_store_set(C, after.context);

		if(after.opptr) {
			/* free in advance to avoid leak on exit */
			opptr= *after.opptr,
			MEM_freeN(after.opptr);
		}

		if(after.optype)
			WM_operator_name_call(C, after.optype->idname, after.opcontext, (after.opptr)? &opptr: NULL);

		if(after.opptr)
			WM_operator_properties_free(&opptr);

		if(after.rnapoin.data)
			RNA_property_update(C, &after.rnapoin, after.rnaprop);

		if(after.context) {
			CTX_store_set(C, NULL);
			CTX_store_free(after.context);
		}

		if(after.func)
			after.func(C, after.func_arg1, after.func_arg2);
		if(after.funcN)
			after.funcN(C, after.func_argN, after.func_arg2);
		
		if(after.handle_func)
			after.handle_func(C, after.handle_func_arg, after.retval);
		if(after.butm_func)
			after.butm_func(C, after.butm_func_arg, after.a2);
		
		if(after.rename_func)
			after.rename_func(C, after.rename_arg1, after.rename_orig);
		if(after.rename_orig)
			MEM_freeN(after.rename_orig);
		
		if(after.undostr[0])
			ED_undo_push(C, after.undostr);
	}
}

static void ui_apply_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_BUTM(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_set_but_val(but, but->hardmin);
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_BLOCK(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	if(ELEM3(but->type, MENU, ICONROW, ICONTEXTROW))
		ui_set_but_val(but, data->value);

	ui_check_but(but);
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_TOG(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
{
	double value;
	int w, lvalue, push;
	
	/* local hack... */
	if(but->type==BUT_TOGDUAL && data->togdual) {
		if(but->pointype==SHO)
			but->poin += 2;
		else if(but->pointype==INT)
			but->poin += 4;
	}
	
	value= ui_get_but_val(but);
	lvalue= (int)value;
	
	if(but->bit) {
		w= BTST(lvalue, but->bitnr);
		if(w) lvalue = BCLR(lvalue, but->bitnr);
		else lvalue = BSET(lvalue, but->bitnr);
		
		if(but->type==TOGR) {
			if(!data->togonly) {
				lvalue= 1<<(but->bitnr);
	
				ui_set_but_val(but, (double)lvalue);
			}
			else {
				if(lvalue==0) lvalue= 1<<(but->bitnr);
			}
		}
		
		ui_set_but_val(but, (double)lvalue);
		if(but->type==ICONTOG || but->type==ICONTOGN) ui_check_but(but);
	}
	else {
		
		if(value==0.0) push= 1; 
		else push= 0;
		
		if(ELEM3(but->type, TOGN, ICONTOGN, OPTIONN)) push= !push;
		ui_set_but_val(but, (double)push);
		if(but->type==ICONTOG || but->type==ICONTOGN) ui_check_but(but);		
	}
	
	/* end local hack... */
	if(but->type==BUT_TOGDUAL && data->togdual) {
		if(but->pointype==SHO)
			but->poin -= 2;
		else if(but->pointype==INT)
			but->poin -= 4;
	}
	
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_ROW(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
{
	uiBut *bt;
	
	ui_set_but_val(but, but->hardmax);
	
	/* states of other row buttons */
	for(bt= block->buttons.first; bt; bt= bt->next)
		if(bt!=but && bt->poin==but->poin && ELEM(bt->type, ROW, LISTROW))
			ui_check_but(bt);
	
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_TEX(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	if(!data->str)
		return;

	ui_set_but_string(C, but, data->str);
	ui_check_but(but);

	/* give butfunc the original text too */
	/* feature used for bone renaming, channels, etc */
	/* afterfunc frees origstr */
	but->rename_orig= data->origstr;
	data->origstr= NULL;
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_NUM(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	if(data->str) {
		if(ui_set_but_string(C, but, data->str)) {
			data->value= ui_get_but_val(but);
		}
		else {
			data->cancel= 1;
			return;
		}
	}
	else
		ui_set_but_val(but, data->value);

	ui_check_but(but);
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_TOG3(bContext *C, uiBut *but, uiHandleButtonData *data)
{ 
	if(but->pointype==SHO ) {
		short *sp= (short *)but->poin;
		
		if( BTST(sp[1], but->bitnr)) {
			sp[1]= BCLR(sp[1], but->bitnr);
			sp[0]= BCLR(sp[0], but->bitnr);
		}
		else if( BTST(sp[0], but->bitnr)) {
			sp[1]= BSET(sp[1], but->bitnr);
		} else {
			sp[0]= BSET(sp[0], but->bitnr);
		}
	}
	else {
		if( BTST(*(but->poin+2), but->bitnr)) {
			*(but->poin+2)= BCLR(*(but->poin+2), but->bitnr);
			*(but->poin)= BCLR(*(but->poin), but->bitnr);
		}
		else if( BTST(*(but->poin), but->bitnr)) {
			*(but->poin+2)= BSET(*(but->poin+2), but->bitnr);
		} else {
			*(but->poin)= BSET(*(but->poin), but->bitnr);
		}
	}
	
	ui_check_but(but);
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_VEC(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_set_but_vectorf(but, data->vec);
	ui_check_but(but);
	ui_apply_but_func(C, but);

	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_COLORBAND(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_CURVE(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_IDPOIN(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_set_but_string(C, but, data->str);
	ui_check_but(but);
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

#ifdef INTERNATIONAL
static void ui_apply_but_CHARTAB(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}
#endif

/* ****************** drag drop code *********************** */

static int ui_but_mouse_inside_icon(uiBut *but, ARegion *ar, wmEvent *event)
{
	rcti rect;
	int x= event->x, y= event->y; 
	
	ui_window_to_block(ar, but->block, &x, &y);
	
	rect.xmin= but->x1; rect.xmax= but->x2;
	rect.ymin= but->y1; rect.ymax= but->y2;
	
	if(but->imb); /* use button size itself */
	else if(but->flag & UI_ICON_LEFT) {
		rect.xmax= rect.xmin + (rect.ymax-rect.ymin);
	}
	else {
		int delta= (rect.xmax-rect.xmin) - (rect.ymax-rect.ymin);
		rect.xmin += delta/2;
		rect.xmax -= delta/2;
	}
	
	return BLI_in_rcti(&rect, x, y);
}

#define UI_DRAG_THRESHOLD	3
static int ui_but_start_drag(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	/* prevent other WM gestures to start while we try to drag */
	WM_gestures_remove(C);

	if( ABS(data->dragstartx - event->x) + ABS(data->dragstarty - event->y) > UI_DRAG_THRESHOLD ) {
		wmDrag *drag;
		
		button_activate_state(C, but, BUTTON_STATE_EXIT);
		data->cancel= 1;
		
		drag= WM_event_start_drag(C, but->icon, but->dragtype, but->dragpoin, ui_get_but_val(but));
		if(but->imb)
			WM_event_drag_image(drag, but->imb, but->imb_scale, but->x2-but->x1, but->y2-but->y1);
		return 1;
	}
	
	return 0;
}

/* ********************** linklines *********************** */

static void ui_delete_active_linkline(uiBlock *block)
{
	uiBut *but;
	uiLink *link;
	uiLinkLine *line, *nline;
	int a, b;
	
	but= block->buttons.first;
	while(but) {
		if(but->type==LINK && but->link) {
			line= but->link->lines.first;
			while(line) {
				
				nline= line->next;
				
				if(line->flag & UI_SELECT) {
					BLI_remlink(&but->link->lines, line);
					
					link= line->from->link;
					
					/* are there more pointers allowed? */
					if(link->ppoin) {
						
						if(*(link->totlink)==1) {
							*(link->totlink)= 0;
							MEM_freeN(*(link->ppoin));
							*(link->ppoin)= NULL;
						}
						else {
							b= 0;
							for(a=0; a< (*(link->totlink)); a++) {
								
								if( (*(link->ppoin))[a] != line->to->poin ) {
									(*(link->ppoin))[b]= (*(link->ppoin))[a];
									b++;
								}
							}	
							(*(link->totlink))--;
						}
					}
					else {
						*(link->poin)= NULL;
					}
					
					MEM_freeN(line);
				}
				line= nline;
			}
		}
		but= but->next;
	}
}


static uiLinkLine *ui_is_a_link(uiBut *from, uiBut *to)
{
	uiLinkLine *line;
	uiLink *link;
	
	link= from->link;
	if(link) {
		line= link->lines.first;
		while(line) {
			if(line->from==from && line->to==to) return line;
			line= line->next;
		}
	}
	return NULL;
}

static void ui_add_link(uiBut *from, uiBut *to)
{
	/* in 'from' we have to add a link to 'to' */
	uiLink *link;
	uiLinkLine *line;
	void **oldppoin;
	int a;
	
	if( (line= ui_is_a_link(from, to)) ) {
		line->flag |= UI_SELECT;
		ui_delete_active_linkline(from->block);
		return;
	}

	if (from->type==INLINK && to->type==INLINK) {
		return;
	}
	else if (from->type==LINK && to->type==INLINK) {
		if( from->link->tocode != (int)to->hardmin ) {
			return;
		}
	}
	else if(from->type==INLINK && to->type==LINK) {
		if( to->link->tocode == (int)from->hardmin ) {
			return;
		}
	}
	
	link= from->link;
	
	/* are there more pointers allowed? */
	if(link->ppoin) {
		oldppoin= *(link->ppoin);
		
		(*(link->totlink))++;
		*(link->ppoin)= MEM_callocN( *(link->totlink)*sizeof(void *), "new link");
		
		for(a=0; a< (*(link->totlink))-1; a++) {
			(*(link->ppoin))[a]= oldppoin[a];
		}
		(*(link->ppoin))[a]= to->poin;
		
		if(oldppoin) MEM_freeN(oldppoin);
	}
	else {
		*(link->poin)= to->poin;
	}
	
}


static void ui_apply_but_LINK(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ARegion *ar= CTX_wm_region(C);
	uiBut *bt;
	
	for(bt= but->block->buttons.first; bt; bt= bt->next) {
		if( ui_mouse_inside_button(ar, bt, but->linkto[0]+ar->winrct.xmin, but->linkto[1]+ar->winrct.ymin) )
			break;
	}
	if(bt && bt!=but) {
		if (!ELEM(bt->type, LINK, INLINK) || !ELEM(but->type, LINK, INLINK))
			return;
		
		if(but->type==LINK) ui_add_link(but, bt);
		else ui_add_link(bt, but);

		ui_apply_but_func(C, but);
		data->retval= but->retval;
	}
	data->applied= 1;
}

static void ui_apply_but_IMAGE(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_HISTOGRAM(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}

static void ui_apply_but_WAVEFORM(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	ui_apply_but_func(C, but);
	data->retval= but->retval;
	data->applied= 1;
}


static void ui_apply_button(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, int interactive)
{
	char *editstr;
	double *editval;
	float *editvec;
	ColorBand *editcoba;
	CurveMapping *editcumap;

	data->retval= 0;

	/* if we cancel and have not applied yet, there is nothing to do,
	 * otherwise we have to restore the original value again */
	if(data->cancel) {
		if(!data->applied)
			return;

		if(data->str) MEM_freeN(data->str);
		data->str= data->origstr;
		data->origstr= NULL;
		data->value= data->origvalue;
		data->origvalue= 0.0;
		VECCOPY(data->vec, data->origvec);
		data->origvec[0]= data->origvec[1]= data->origvec[2]= 0.0f;
	}
	else {
		/* we avoid applying interactive edits a second time
		 * at the end with the appliedinteractive flag */
		if(interactive)
			data->appliedinteractive= 1;
		else if(data->appliedinteractive)
			return;
	}

	/* ensures we are writing actual values */
	editstr= but->editstr;
	editval= but->editval;
	editvec= but->editvec;
	editcoba= but->editcoba;
	editcumap= but->editcumap;
	but->editstr= NULL;
	but->editval= NULL;
	but->editvec= NULL;
	but->editcoba= NULL;
	but->editcumap= NULL;

	/* handle different types */
	switch(but->type) {
		case BUT:
			ui_apply_but_BUT(C, but, data);
			break;
		case TEX:
		case SEARCH_MENU:
			ui_apply_but_TEX(C, but, data);
			break;
		case TOGBUT: 
		case TOG: 
		case TOGR: 
		case ICONTOG:
		case ICONTOGN:
		case TOGN:
		case BUT_TOGDUAL:
		case OPTION:
		case OPTIONN:
			ui_apply_but_TOG(C, block, but, data);
			break;
		case ROW:
		case LISTROW:
			ui_apply_but_ROW(C, block, but, data);
			break;
		case SCROLL:
		case NUM:
		case NUMABS:
		case SLI:
		case NUMSLI:
			ui_apply_but_NUM(C, but, data);
			break;
		case HSVSLI:
			break;
		case TOG3:	
			ui_apply_but_TOG3(C, but, data);
			break;
		case MENU:
		case ICONROW:
		case ICONTEXTROW:
		case BLOCK:
		case PULLDOWN:
		case COL:
			ui_apply_but_BLOCK(C, but, data);
			break;
		case BUTM:
			ui_apply_but_BUTM(C, but, data);
			break;
		case BUT_NORMAL:
		case HSVCUBE:
		case HSVCIRCLE:
			ui_apply_but_VEC(C, but, data);
			break;
		case BUT_COLORBAND:
			ui_apply_but_COLORBAND(C, but, data);
			break;
		case BUT_CURVE:
			ui_apply_but_CURVE(C, but, data);
			break;
		case IDPOIN:
			ui_apply_but_IDPOIN(C, but, data);
			break;
#ifdef INTERNATIONAL
		case CHARTAB:
			ui_apply_but_CHARTAB(C, but, data);
			break;
#endif
		case KEYEVT:
		case HOTKEYEVT:
			ui_apply_but_BUT(C, but, data);
			break;
		case LINK:
		case INLINK:
			ui_apply_but_LINK(C, but, data);
			break;
		case BUT_IMAGE:	
			ui_apply_but_IMAGE(C, but, data);
			break;
		case HISTOGRAM:	
			ui_apply_but_HISTOGRAM(C, but, data);
			break;
		case WAVEFORM:
			ui_apply_but_WAVEFORM(C, but, data);
			break;
		default:
			break;
	}

	but->editstr= editstr;
	but->editval= editval;
	but->editvec= editvec;
	but->editcoba= editcoba;
	but->editcumap= editcumap;
}

/* ******************* drop event ********************  */

/* only call if event type is EVT_DROP */
static void ui_but_drop(bContext *C, wmEvent *event, uiBut *but, uiHandleButtonData *data)
{
	wmDrag *wmd;
	ListBase *drags= event->customdata; /* drop event type has listbase customdata by default */
	
	for(wmd= drags->first; wmd; wmd= wmd->next) {
		if(wmd->type==WM_DRAG_ID) {
			/* align these types with UI_but_active_drop_name */
			if(ELEM3(but->type, TEX, IDPOIN, SEARCH_MENU)) {
				ID *id= (ID *)wmd->poin;
				
				if(but->poin==NULL && but->rnapoin.data==NULL) {}
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
				BLI_strncpy(data->str, id->name+2, data->maxlen);
				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
		}
	}
	
}

/* ******************* copy and paste ********************  */

/* c = copy, v = paste */
static void ui_but_copy_paste(bContext *C, uiBut *but, uiHandleButtonData *data, char mode)
{
	static ColorBand but_copypaste_coba = {0};
	char buf[UI_MAX_DRAW_STR+1]= {0};
	double val;
	
	if(mode=='v' && but->lock)
		return;

	if(mode=='v') {
		/* extract first line from clipboard in case of multi-line copies */
		char *p, *pbuf= WM_clipboard_text_get(0);
		p= pbuf;
		if(p) {
			int i = 0;
			while (*p && *p!='\r' && *p!='\n' && i<UI_MAX_DRAW_STR) {
				buf[i++]=*p;
				p++;
			}
			buf[i]= 0;
			MEM_freeN(pbuf);
		}
	}
	
	/* numeric value */
	if ELEM4(but->type, NUM, NUMABS, NUMSLI, HSVSLI) {
		
		if(but->poin==NULL && but->rnapoin.data==NULL);
		else if(mode=='c') {
			if(ui_is_but_float(but))
				sprintf(buf, "%f", ui_get_but_val(but));
			else
				sprintf(buf, "%d", (int)ui_get_but_val(but));

			WM_clipboard_text_set(buf, 0);
		}
		else {
			if (sscanf(buf, " %lf ", &val) == 1) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				data->value= val;
				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
		}
	}

	/* RGB triple */
	else if(but->type==COL) {
		float rgb[3];
		
		if(but->poin==NULL && but->rnapoin.data==NULL);
		else if(mode=='c') {

			ui_get_but_vectorf(but, rgb);
			sprintf(buf, "[%f, %f, %f]", rgb[0], rgb[1], rgb[2]);
			WM_clipboard_text_set(buf, 0);
			
		}
		else {
			if (sscanf(buf, "[%f, %f, %f]", &rgb[0], &rgb[1], &rgb[2]) == 3) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				ui_set_but_vectorf(but, rgb);
				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
		}
	}

	/* text/string and ID data */
	else if(ELEM3(but->type, TEX, IDPOIN, SEARCH_MENU)) {
		uiHandleButtonData *data= but->active;

		if(but->poin==NULL && but->rnapoin.data==NULL);
		else if(mode=='c') {
			button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
			BLI_strncpy(buf, data->str, UI_MAX_DRAW_STR);
			WM_clipboard_text_set(data->str, 0);
			data->cancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else {
			button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
			BLI_strncpy(data->str, buf, data->maxlen);
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
	}
	/* colorband (not supported by system clipboard) */
	else if(but->type==BUT_COLORBAND) {
		if(mode=='c') {
			if(but->poin==NULL)
				return;

			memcpy(&but_copypaste_coba, but->poin, sizeof(ColorBand));
		}
		else {
			if(but_copypaste_coba.tot==0)
				return;

			if(!but->poin)
				but->poin= MEM_callocN(sizeof(ColorBand), "colorband");

			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
			memcpy(data->coba, &but_copypaste_coba, sizeof(ColorBand) );
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
	}
	/* operator button (any type) */
	else if (but->optype) {
		if(mode=='c') {
			PointerRNA *opptr;
			char *str;
			opptr= uiButGetOperatorPtrRNA(but); /* allocated when needed, the button owns it */

			str= WM_operator_pystring(C, but->optype, opptr, 0);

			WM_clipboard_text_set(str, 0);

			MEM_freeN(str);
		}
	}
}

/* ************* in-button text selection/editing ************* */

/* return 1 if char ch is special character, otherwise return 0 */
static short test_special_char(char ch)
{
	switch(ch) {
		case '\\':
		case '/':
		case '~':
		case '!':
		case '@':
		case '#':
		case '$':
		case '%':
		case '^':
		case '&':
		case '*':
		case '(':
		case ')':
		case '+':
		case '=':
		case '{':
		case '}':
		case '[':
		case ']':
		case ':':
		case ';':
		case '\'':
		case '\"':
		case '<':
		case '>':
		case ',':
		case '.':
		case '?':
		case '_':
		case '-':
		case ' ':
			return 1;
			break;
		default:
			break;
	}
	return 0;
}

static int ui_textedit_delete_selection(uiBut *but, uiHandleButtonData *data)
{
	char *str= data->str;
	int len= strlen(str);
	int change= 0;
	if(but->selsta != but->selend && len) {
		memmove( str+but->selsta, str+but->selend, len-but->selsta+1 );
		change= 1;
	}
	
	but->pos = but->selend = but->selsta;
	return change;
}

/* note, but->block->aspect is used here, when drawing button style is getting scaled too */
static void ui_textedit_set_cursor_pos(uiBut *but, uiHandleButtonData *data, short x)
{
	uiStyle *style= U.uistyles.first;	// XXX pass on as arg
	uiFontStyle *fstyle = &style->widget;
	int startx= but->x1;
	char *origstr;

	uiStyleFontSet(fstyle);

	if (fstyle->kerning==1)	/* for BLF_width */
		BLF_enable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
	
	origstr= MEM_callocN(sizeof(char)*data->maxlen, "ui_textedit origstr");
	
	BLI_strncpy(origstr, but->drawstr, data->maxlen);
	
	/* XXX solve generic */
	if(but->type==NUM || but->type==NUMSLI)
		startx += (int)(0.5f*(but->y2 - but->y1));
	else if(ELEM(but->type, TEX, SEARCH_MENU)) {
		startx += 5;
		if (but->flag & UI_HAS_ICON)
			startx += 16;
	}
	
	/* mouse dragged outside the widget to the left */
	if (x < startx && but->ofs > 0) {	
		int i= but->ofs;

		origstr[but->ofs] = 0;
		
		while (i > 0) {
			i--;
			if (BLF_width(fstyle->uifont_id, origstr+i) > (startx - x)*0.25) break;	// 0.25 == scale factor for less sensitivity
		}
		but->ofs = i;
		but->pos = but->ofs;
	}
	/* mouse inside the widget */
	else if (x >= startx) {
		float aspect= sqrt(but->block->aspect);
		
		but->pos= strlen(origstr)-but->ofs;
		
		/* XXX does not take zoom level into account */
		while (aspect*startx + aspect*BLF_width(fstyle->uifont_id, origstr+but->ofs) > x) {
			if (but->pos <= 0) break;
			but->pos--;
			origstr[but->pos+but->ofs] = 0;
		}		
		but->pos += but->ofs;
		if(but->pos<0) but->pos= 0;
	}
	
	if (fstyle->kerning == 1)
		BLF_disable(fstyle->uifont_id, BLF_KERNING_DEFAULT);
	
	MEM_freeN(origstr);
}

static void ui_textedit_set_cursor_select(uiBut *but, uiHandleButtonData *data, short x)
{
	if (x > data->selstartx) data->selextend = EXTEND_RIGHT;
	else if (x < data->selstartx) data->selextend = EXTEND_LEFT;

	ui_textedit_set_cursor_pos(but, data, x);
						
	if (data->selextend == EXTEND_RIGHT) but->selend = but->pos;
	if (data->selextend == EXTEND_LEFT) but->selsta = but->pos;

	ui_check_but(but);
}

static int ui_textedit_type_ascii(uiBut *but, uiHandleButtonData *data, char ascii)
{
	char *str;
	int len, x, changed= 0;

	str= data->str;
	len= strlen(str);

	if(len-(but->selend - but->selsta)+1 <= data->maxlen) {
		/* type over the current selection */
		if ((but->selend - but->selsta) > 0)
			changed= ui_textedit_delete_selection(but, data);

		len= strlen(str);
		if(len+1 < data->maxlen) {
			for(x= data->maxlen; x>but->pos; x--)
				str[x]= str[x-1];
			str[but->pos]= ascii;
			str[len+1]= '\0';

			but->pos++; 
			changed= 1;
		}
	}

	return changed;
}

void ui_textedit_move(uiBut *but, uiHandleButtonData *data, int direction, int select, int jump)
{
	char *str;
	int len;

	str= data->str;
	len= strlen(str);

	if(direction) { /* right*/
		/* if there's a selection */
		if ((but->selend - but->selsta) > 0) {
			/* extend the selection based on the first direction taken */
			if(select) {
				if (!data->selextend) {
					data->selextend = EXTEND_RIGHT;
				}
				if (data->selextend == EXTEND_RIGHT) {
					but->selend++;
					if (but->selend > len) but->selend = len;
				} else if (data->selextend == EXTEND_LEFT) {
					but->selsta++;
					/* if the selection start has gone past the end,
					* flip them so they're in sync again */
					if (but->selsta == but->selend) {
						but->pos = but->selsta;
						data->selextend = EXTEND_RIGHT;
					}
				}
			} else {
				but->selsta = but->pos = but->selend;
				data->selextend = 0;
			}
		} else {
			if(select) {
				/* make a selection, starting from the cursor position */
				but->selsta = but->pos;
				
				but->pos++;
				if(but->pos>strlen(str)) but->pos= strlen(str);
				
				but->selend = but->pos;
			} else if(jump) {
				/* jump betweenn special characters (/,\,_,-, etc.),
				 * look at function test_special_char() for complete
				 * list of special character, ctr -> */
				while(but->pos < len) {
					but->pos++;
					if(test_special_char(str[but->pos])) break;
				}
			} else {
				but->pos++;
				if(but->pos>strlen(str)) but->pos= strlen(str);
			}
		}
	}
	else { /* left */
		/* if there's a selection */
		if ((but->selend - but->selsta) > 0) {
			/* extend the selection based on the first direction taken */
			if(select) {
				if (!data->selextend) {
					data->selextend = EXTEND_LEFT;
				}
				if (data->selextend == EXTEND_LEFT) {
					but->selsta--;
					if (but->selsta < 0) but->selsta = 0;
				} else if (data->selextend == EXTEND_RIGHT) {
					but->selend--;
					/* if the selection start has gone past the end,
					* flip them so they're in sync again */
					if (but->selsta == but->selend) {
						but->pos = but->selsta;
						data->selextend = EXTEND_LEFT;
					}
				}
			} else {
				but->pos = but->selend = but->selsta;
				data->selextend = 0;
			}
		} else {
			if(select) {
				/* make a selection, starting from the cursor position */
				but->selend = but->pos;
				
				but->pos--;
				if(but->pos<0) but->pos= 0;
				
				but->selsta = but->pos;
			} else if(jump) {
				/* jump betweenn special characters (/,\,_,-, etc.),
				 * look at function test_special_char() for complete
				 * list of special character, ctr -> */
				while(but->pos > 0){
					but->pos--;
					if(test_special_char(str[but->pos])) break;
				}
			} else {
				if(but->pos>0) but->pos--;
			}
		}
	}
}

void ui_textedit_move_end(uiBut *but, uiHandleButtonData *data, int direction, int select)
{
	char *str;

	str= data->str;

	if(direction) { /* right */
		if(select) {
			but->selsta = but->pos;
			but->selend = strlen(str);
			data->selextend = EXTEND_RIGHT;
		} else {
			but->selsta = but->selend = but->pos= strlen(str);
		}
	}
	else { /* left */
		if(select) {
			but->selend = but->pos;
			but->selsta = 0;
			data->selextend = EXTEND_LEFT;
		} else {
			but->selsta = but->selend = but->pos= 0;
		}
	}
}

static int ui_textedit_delete(uiBut *but, uiHandleButtonData *data, int direction, int all)
{
	char *str;
	int len, x, changed= 0;

	str= data->str;
	len= strlen(str);

	if(all) {
		if(len) changed=1;
		str[0]= 0;
		but->pos= 0;
	}
	else if(direction) { /* delete */
		if ((but->selend - but->selsta) > 0) {
			changed= ui_textedit_delete_selection(but, data);
		}
		else if(but->pos>=0 && but->pos<len) {
			for(x=but->pos; x<len; x++)
				str[x]= str[x+1];
			str[len-1]='\0';
			changed= 1;
		}
	}
	else { /* backspace */
		if(len!=0) {
			if ((but->selend - but->selsta) > 0) {
				changed= ui_textedit_delete_selection(but, data);
			}
			else if(but->pos>0) {
				for(x=but->pos; x<len; x++)
					str[x-1]= str[x];
				str[len-1]='\0';

				but->pos--;
				changed= 1;
			}
		} 
	}

	return changed;
}

static int ui_textedit_autocomplete(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	char *str;
	int changed= 1;

	str= data->str;

	if(data->searchbox)
		ui_searchbox_autocomplete(C, data->searchbox, but, data->str);
	else
		but->autocomplete_func(C, str, but->autofunc_arg);

	but->pos= strlen(str);
	but->selsta= but->selend= but->pos;

	return changed;
}

static int ui_textedit_copypaste(uiBut *but, uiHandleButtonData *data, int paste, int copy, int cut)
{
	char buf[UI_MAX_DRAW_STR]={0};
	char *str, *p, *pbuf;
	int len, x, y, i, changed= 0;

	str= data->str;
	len= strlen(str);
	
	/* paste */
	if (paste) {
		/* extract the first line from the clipboard */
		p = pbuf= WM_clipboard_text_get(0);

		if(p && p[0]) {
			i= 0;
			while (*p && *p!='\r' && *p!='\n' && i<UI_MAX_DRAW_STR-1) {
				buf[i++]=*p;
				p++;
			}
			buf[i]= 0;

			/* paste over the current selection */
			if ((but->selend - but->selsta) > 0) {
				ui_textedit_delete_selection(but, data);
				len= strlen(str);
			}
			
			for (y=0; y<strlen(buf); y++)
			{
				/* add contents of buffer */
				if(len+1 < data->maxlen) {
					for(x= data->maxlen; x>but->pos; x--)
						str[x]= str[x-1];
					str[but->pos]= buf[y];
					but->pos++; 
					len++;
					str[len]= '\0';
				}
			}

			changed= 1;
		}

		if(pbuf)
			MEM_freeN(pbuf);
	}
	/* cut & copy */
	else if (copy || cut) {
		/* copy the contents to the copypaste buffer */
		for(x= but->selsta; x <= but->selend; x++) {
			if (x==but->selend)
				buf[x] = '\0';
			else
				buf[(x - but->selsta)] = str[x];
		}

		WM_clipboard_text_set(buf, 0);
		
		/* for cut only, delete the selection afterwards */
		if(cut)
			if((but->selend - but->selsta) > 0)
				changed= ui_textedit_delete_selection(but, data);
	} 

	return changed;
}

static void ui_textedit_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	if(data->str) {
		MEM_freeN(data->str);
		data->str= NULL;
	}

	/* retrieve string */
	data->maxlen= ui_get_but_string_max_length(but);
	data->str= MEM_callocN(sizeof(char)*data->maxlen + 1, "textedit str");
	ui_get_but_string(but, data->str, data->maxlen);

	if(ELEM3(but->type, NUM, NUMABS, NUMSLI)) {
		/* XXX: we dont have utf editing yet so for numbers its best to strip out utf chars 
		 * this is so the deg' synbol isnt included in number editing fields: bug 22274 */
		int i;
		for(i=0; data->str[i]; i++) {
			if(!isascii(data->str[i])) {
				data->str[i]= '\0';
				break;
			}
		}
	}
	
	
	data->origstr= BLI_strdup(data->str);
	data->selextend= 0;
	data->selstartx= 0;

	/* set cursor pos to the end of the text */
	but->editstr= data->str;
	but->pos= strlen(data->str);
	but->selsta= 0;
	but->selend= strlen(data->str);

	/* optional searchbox */
	if(but->type==SEARCH_MENU) {
		data->searchbox= ui_searchbox_create(C, data->region, but);
		ui_searchbox_update(C, data->searchbox, but, 1); /* 1= reset */
	}
	
	ui_check_but(but);
	
	WM_cursor_modal(CTX_wm_window(C), BC_TEXTEDITCURSOR);
}

static void ui_textedit_end(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	if(but) {
		if(data->searchbox) {
			if(data->cancel==0)
				ui_searchbox_apply(but, data->searchbox);

			ui_searchbox_free(C, data->searchbox);
			data->searchbox= NULL;
		}
		
		but->editstr= NULL;
		but->pos= -1;
	}
	
	WM_cursor_restore(CTX_wm_window(C));
}

static void ui_textedit_next_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
{
	uiBut *but;

	/* label and roundbox can overlap real buttons (backdrops...) */
	if(ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
		return;

	for(but= actbut->next; but; but= but->next) {
		if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
			if(!(but->flag & UI_BUT_DISABLED)) {
				data->postbut= but;
				data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
				return;
			}
		}
	}
	for(but= block->buttons.first; but!=actbut; but= but->next) {
		if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
			if(!(but->flag & UI_BUT_DISABLED)) {
				data->postbut= but;
				data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
				return;
			}
		}
	}
}

static void ui_textedit_prev_but(uiBlock *block, uiBut *actbut, uiHandleButtonData *data)
{
	uiBut *but;

	/* label and roundbox can overlap real buttons (backdrops...) */
	if(ELEM4(actbut->type, LABEL, SEPR, ROUNDBOX, LISTBOX))
		return;

	for(but= actbut->prev; but; but= but->prev) {
		if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
			if(!(but->flag & UI_BUT_DISABLED)) {
				data->postbut= but;
				data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
				return;
			}
		}
	}
	for(but= block->buttons.last; but!=actbut; but= but->prev) {
		if(ELEM7(but->type, TEX, NUM, NUMABS, NUMSLI, HSVSLI, IDPOIN, SEARCH_MENU)) {
			if(!(but->flag & UI_BUT_DISABLED)) {
				data->postbut= but;
				data->posttype= BUTTON_ACTIVATE_TEXT_EDITING;
				return;
			}
		}
	}
}


static void ui_do_but_textedit(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my, changed= 0, inbox=0, update= 0, retval= WM_UI_HANDLER_CONTINUE;

	switch(event->type) {
		case WHEELUPMOUSE:
		case WHEELDOWNMOUSE:
		case MOUSEMOVE:
			if(data->searchbox)
				ui_searchbox_event(C, data->searchbox, but, event);
			
			break;
		case RIGHTMOUSE:
		case ESCKEY:
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			retval= WM_UI_HANDLER_BREAK;
			break;
		case LEFTMOUSE: {
			
			/* exit on LMB only on RELEASE for searchbox, to mimic other popups, and allow multiple menu levels */
			if(data->searchbox)
				inbox= ui_searchbox_inside(data->searchbox, event->x, event->y);

			if(event->val==KM_PRESS) {
				mx= event->x;
				my= event->y;
				ui_window_to_block(data->region, block, &mx, &my);

				if (ui_but_contains_pt(but, mx, my)) {
					ui_textedit_set_cursor_pos(but, data, mx);
					but->selsta = but->selend = but->pos;
					data->selstartx= mx;

					button_activate_state(C, but, BUTTON_STATE_TEXT_SELECTING);
					retval= WM_UI_HANDLER_BREAK;
				}
				else if(inbox==0) {
					/* if searchbox, click outside will cancel */
					if(data->searchbox)
						data->cancel= data->escapecancel= 1;
					button_activate_state(C, but, BUTTON_STATE_EXIT);
					retval= WM_UI_HANDLER_BREAK;
				}
			}
			else if(inbox) {
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				retval= WM_UI_HANDLER_BREAK;
			}
			break;
		}
	}

	if(event->val==KM_PRESS) {
		switch (event->type) {
			case VKEY:
			case XKEY:
			case CKEY:
				if(event->ctrl || event->oskey) {
					if(event->type == VKEY)
						changed= ui_textedit_copypaste(but, data, 1, 0, 0);
					else if(event->type == CKEY)
						changed= ui_textedit_copypaste(but, data, 0, 1, 0);
					else if(event->type == XKEY)
						changed= ui_textedit_copypaste(but, data, 0, 0, 1);

					retval= WM_UI_HANDLER_BREAK;
				}
				break;
			case RIGHTARROWKEY:
				ui_textedit_move(but, data, 1, event->shift, event->ctrl);
				retval= WM_UI_HANDLER_BREAK;
				break;
			case LEFTARROWKEY:
				ui_textedit_move(but, data, 0, event->shift, event->ctrl);
				retval= WM_UI_HANDLER_BREAK;
				break;
			case DOWNARROWKEY:
				if(data->searchbox) {
					ui_searchbox_event(C, data->searchbox, but, event);
					break;
				}
				/* pass on purposedly */
			case ENDKEY:
				ui_textedit_move_end(but, data, 1, event->shift);
				retval= WM_UI_HANDLER_BREAK;
				break;
			case UPARROWKEY:
				if(data->searchbox) {
					ui_searchbox_event(C, data->searchbox, but, event);
					break;
				}
				/* pass on purposedly */
			case HOMEKEY:
				ui_textedit_move_end(but, data, 0, event->shift);
				retval= WM_UI_HANDLER_BREAK;
				break;
			case PADENTER:
			case RETKEY:
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				retval= WM_UI_HANDLER_BREAK;
				break;
			case DELKEY:
				changed= ui_textedit_delete(but, data, 1, 0);
				retval= WM_UI_HANDLER_BREAK;
				break;

			case BACKSPACEKEY:
				changed= ui_textedit_delete(but, data, 0, event->shift);
				retval= WM_UI_HANDLER_BREAK;
				break;
				
			case TABKEY:
				/* there is a key conflict here, we can't tab with autocomplete */
				if(but->autocomplete_func || data->searchbox) {
					changed= ui_textedit_autocomplete(C, but, data);
					update= 1; /* do live update for tab key */
					retval= WM_UI_HANDLER_BREAK;
				}
				/* the hotkey here is not well defined, was G.qual so we check all */
				else if(event->shift || event->ctrl || event->alt || event->oskey) {
					ui_textedit_prev_but(block, but, data);
					button_activate_state(C, but, BUTTON_STATE_EXIT);
				}
				else {
					ui_textedit_next_but(block, but, data);
					button_activate_state(C, but, BUTTON_STATE_EXIT);
				}
				retval= WM_UI_HANDLER_BREAK;
				break;
		}

		if(event->ascii && (retval == WM_UI_HANDLER_CONTINUE)) {
			changed= ui_textedit_type_ascii(but, data, event->ascii);
			retval= WM_UI_HANDLER_BREAK;
			
		}
		/* textbutton with magnifier icon: do live update for search button */
		if(but->icon==ICON_VIEWZOOM)
			update= 1;
	}

	if(changed) {
		/* only update when typing for TAB key */
		if(update && data->interactive) ui_apply_button(C, block, but, data, 1);
		else ui_check_but(but);
		
		if(data->searchbox)
			ui_searchbox_update(C, data->searchbox, but, 1); /* 1 = reset */
	}

	if(changed || (retval == WM_UI_HANDLER_BREAK))
		ED_region_tag_redraw(data->region);
}

static void ui_do_but_textedit_select(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my, retval= WM_UI_HANDLER_CONTINUE;

	switch(event->type) {
		case MOUSEMOVE: {
			mx= event->x;
			my= event->y;
			ui_window_to_block(data->region, block, &mx, &my);

			ui_textedit_set_cursor_select(but, data, mx);
			retval= WM_UI_HANDLER_BREAK;
			break;
		}
		case LEFTMOUSE:
			if(event->val == KM_RELEASE)
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
			retval= WM_UI_HANDLER_BREAK;
			break;
	}

	if(retval == WM_UI_HANDLER_BREAK) {
		ui_check_but(but);
		ED_region_tag_redraw(data->region);
	}
}

/* ************* number editing for various types ************* */

static void ui_numedit_begin(uiBut *but, uiHandleButtonData *data)
{
	float softrange, softmin, softmax;

	if(but->type == BUT_CURVE) {
		data->cumap= (CurveMapping*)but->poin;
		but->editcumap= data->coba;
	}
	else if(but->type == BUT_COLORBAND) {
		data->coba= (ColorBand*)but->poin;
		but->editcoba= data->coba;
	}
	else if(ELEM3(but->type, BUT_NORMAL, HSVCUBE, HSVCIRCLE)) {
		ui_get_but_vectorf(but, data->origvec);
		VECCOPY(data->vec, data->origvec);
		but->editvec= data->vec;
	}
	else {
		data->startvalue= ui_get_but_val(but);
		data->origvalue= data->startvalue;
		data->value= data->origvalue;
		but->editval= &data->value;

		softmin= but->softmin;
		softmax= but->softmax;
		softrange= softmax - softmin;

		data->dragfstart= (softrange == 0.0)? 0.0: (data->value - softmin)/softrange;
		data->dragf= data->dragfstart;
	}

	data->dragchange= 0;
	data->draglock= 1;
}

static void ui_numedit_end(uiBut *but, uiHandleButtonData *data)
{
	but->editval= NULL;
	but->editvec= NULL;
	but->editcoba= NULL;
	but->editcumap= NULL;

	data->dragstartx= 0;
	data->draglastx= 0;
	data->dragchange= 0;
	data->dragcbd= NULL;
	data->dragsel= 0;
}

static void ui_numedit_apply(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data)
{
	if(data->interactive) ui_apply_button(C, block, but, data, 1);
	else ui_check_but(but);

	ED_region_tag_redraw(data->region);
}

/* ****************** menu opening for various types **************** */

static void ui_blockopen_begin(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	uiBlockCreateFunc func= NULL;
	uiBlockHandleCreateFunc handlefunc= NULL;
	uiMenuCreateFunc menufunc= NULL;
	char *menustr= NULL;
	void *arg= NULL;

	switch(but->type) {
		case BLOCK:
		case PULLDOWN:
			if(but->menu_create_func) {
				menufunc= but->menu_create_func;
				arg= but->poin;
			}
			else {
				func= but->block_create_func;
				arg= but->poin?but->poin:but->func_argN;
			}
			break;
		case MENU:
			if(but->menu_create_func) {
				menufunc= but->menu_create_func;
				arg= but->poin;
			}
			else {
				data->origvalue= ui_get_but_val(but);
				data->value= data->origvalue;
				but->editval= &data->value;

				menustr= but->str;
			}
			break;
		case ICONROW:
			menufunc= ui_block_func_ICONROW;
			arg= but;
			break;
		case ICONTEXTROW:
			menufunc= ui_block_func_ICONTEXTROW;
			arg= but;
			break;
		case COL:
			ui_get_but_vectorf(but, data->origvec);
			VECCOPY(data->vec, data->origvec);
			but->editvec= data->vec;

			handlefunc= ui_block_func_COL;
			arg= but;
			break;
	}

	if(func || handlefunc) {
		data->menu= ui_popup_block_create(C, data->region, but, func, handlefunc, arg);
		if(but->block->handle)
			data->menu->popup= but->block->handle->popup;
	}
	else if(menufunc || menustr) {
		data->menu= ui_popup_menu_create(C, data->region, but, menufunc, arg, menustr);
		if(but->block->handle)
			data->menu->popup= but->block->handle->popup;
	}

	/* this makes adjacent blocks auto open from now on */
	//if(but->block->auto_open==0) but->block->auto_open= 1;
}

static void ui_blockopen_end(bContext *C, uiBut *but, uiHandleButtonData *data)
{
	if(but) {
		but->editval= NULL;
		but->editvec= NULL;

		but->block->auto_open_last= PIL_check_seconds_timer();
	}

	if(data->menu) {
		ui_popup_block_free(C, data->menu);
		data->menu= NULL;
	}
}

/* ***************** events for different button types *************** */

static int ui_do_but_BUT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_WAIT_RELEASE);
			return WM_UI_HANDLER_BREAK;
		}
		else if(event->type == LEFTMOUSE && but->block->handle) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
		else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_WAIT_FLASH);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_RELEASE) {
		if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
			if(!(but->flag & UI_SELECT))
				data->cancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_do_but_HOTKEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
			but->drawstr[0]= 0;
			but->modifier_key= 0;
			button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
		
		if(event->type == MOUSEMOVE)
			return WM_UI_HANDLER_CONTINUE;
		
		if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
			/* only cancel if click outside the button */
			if(ui_mouse_inside_button(but->active->region, but, event->x, event->y) == 0) {
				/* data->cancel doesnt work, this button opens immediate */
				if(but->flag & UI_BUT_IMMEDIATE)
					ui_set_but_val(but, 0);
				else
					data->cancel= 1;
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				return WM_UI_HANDLER_BREAK;
			}
		}
		
		/* always set */
		but->modifier_key = 0;
		if(event->shift)
			but->modifier_key |= KM_SHIFT;
		if(event->alt)
			but->modifier_key |= KM_ALT;
		if(event->ctrl)
			but->modifier_key |= KM_CTRL;
		if(event->oskey)
			but->modifier_key |= KM_OSKEY;
		
		ui_check_but(but);
		ED_region_tag_redraw(data->region);
			
		if(event->val==KM_PRESS) {
			if(ISHOTKEY(event->type)) { 
				
				if(WM_key_event_string(event->type)[0])
					ui_set_but_val(but, event->type);
				else
					data->cancel= 1;
				
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				return WM_UI_HANDLER_BREAK;
			}
		}
	}
	
	return WM_UI_HANDLER_CONTINUE;
}

static int ui_do_but_KEYEVT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_KEY_EVENT) {
		if(event->type == MOUSEMOVE)
			return WM_UI_HANDLER_CONTINUE;

		if(event->val==KM_PRESS) {
			if(WM_key_event_string(event->type)[0])
				ui_set_but_val(but, event->type);
			else
				data->cancel= 1;

			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_do_but_TEX(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(ELEM(event->type, LEFTMOUSE, EVT_BUT_OPEN) && event->val==KM_PRESS) {
			if(but->dt == UI_EMBOSSN && !event->ctrl);
			else {
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
				return WM_UI_HANDLER_BREAK;
			}
		}
	}
	else if(data->state == BUTTON_STATE_TEXT_EDITING) {
		ui_do_but_textedit(C, block, but, data, event);
		return WM_UI_HANDLER_BREAK;
	}
	else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
		ui_do_but_textedit_select(C, block, but, data, event);
		return WM_UI_HANDLER_BREAK;
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_do_but_TOG(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
			data->togdual= event->ctrl;
			data->togonly= !event->shift;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	return WM_UI_HANDLER_CONTINUE;
}

static int ui_do_but_EXIT(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	
	if(data->state == BUTTON_STATE_HIGHLIGHT) {

		/* first handle click on icondrag type button */
		if(event->type==LEFTMOUSE && but->dragpoin) {
			if(ui_but_mouse_inside_icon(but, data->region, event)) {
				
				/* tell the button to wait and keep checking further events to
				 * see if it should start dragging */
				button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
				data->dragstartx= event->x;
				data->dragstarty= event->y;
				return WM_UI_HANDLER_CONTINUE;
			}
		}
		
		if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
			int ret = WM_UI_HANDLER_BREAK;
			/* XXX (a bit ugly) Special case handling for filebrowser drag button */
			if(but->dragpoin && but->imb && ui_but_mouse_inside_icon(but, data->region, event)) {
				ret = WM_UI_HANDLER_CONTINUE;
			}
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return ret;
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_DRAG) {
		
		/* this function also ends state */
		if(ui_but_start_drag(C, but, data, event)) {
			return WM_UI_HANDLER_BREAK;
		}
		
		/* If the mouse has been pressed and released, getting to 
		 * this point without triggering a drag, then clear the 
		 * drag state for this button and continue to pass on the event */
		if(event->type==LEFTMOUSE && event->val==KM_RELEASE) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_CONTINUE;
		}
		
		/* while waiting for a drag to be triggered, always block 
		 * other events from getting handled */
		return WM_UI_HANDLER_BREAK;
	}
	
	return WM_UI_HANDLER_CONTINUE;
}

/* var names match ui_numedit_but_NUM */
static float ui_numedit_apply_snapf(float tempf, float softmin, float softmax, float softrange, int snap)
{
	if(tempf==softmin || tempf==softmax)
		return tempf;

	switch(snap) {
	case 0:
		break;
	case 1:
		if(tempf==softmin || tempf==softmax) { }
		else if(softrange < 2.10) tempf= 0.1*floor(10*tempf);
		else if(softrange < 21.0) tempf= floor(tempf);
		else tempf= 10.0*floor(tempf/10.0);
		break;
	case 2:
		if(tempf==softmin || tempf==softmax) { }
		else if(softrange < 2.10) tempf= 0.01*floor(100.0*tempf);
		else if(softrange < 21.0) tempf= 0.1*floor(10.0*tempf);
		else tempf= floor(tempf);
		break;
	}

	return tempf;
}

static float ui_numedit_apply_snap(int temp, float softmin, float softmax, int snap)
{
	if(temp==softmin || temp==softmax)
		return temp;

	switch(snap) {
	case 0:
		break;
	case 1:
		temp= 10*(temp/10);
		break;
	case 2:
		temp= 100*(temp/100);
		break;
	}

	return temp;
}

static int ui_numedit_but_NUM(uiBut *but, uiHandleButtonData *data, float fac, int snap, int mx)
{
	float deler, tempf, softmin, softmax, softrange;
	int lvalue, temp, changed= 0;
	
	if(mx == data->draglastx)
		return changed;
	
	/* drag-lock - prevent unwanted scroll adjustments */
	/* change value (now 3) to adjust threshold in pixels */
	if(data->draglock) {
		if(abs(mx-data->dragstartx) <= 3)
			return changed;

		data->draglock= 0;
		data->dragstartx= mx;  /* ignore mouse movement within drag-lock */
	}

	softmin= but->softmin;
	softmax= but->softmax;
	softrange= softmax - softmin;

	if(ui_is_a_warp_but(but)) {
		/* Mouse location isn't screen clamped to the screen so use a linear mapping
		 * 2px == 1-int, or 1px == 1-ClickStep */
		if(ui_is_but_float(but)) {
			fac *= 0.01*but->a1;
			tempf = data->startvalue + ((mx - data->dragstartx) * fac);
			tempf= ui_numedit_apply_snapf(tempf, softmin, softmax, softrange, snap);

#if 1		/* fake moving the click start, nicer for dragging back after passing the limit */
			if(tempf < softmin) {
				data->dragstartx -= (softmin-tempf) / fac;
				tempf= softmin;
			} else if (tempf > softmax) {
				data->dragstartx += (tempf-softmax) / fac;
				tempf= softmax;
			}
#else
			CLAMP(tempf, softmin, softmax);
#endif

			if(tempf != data->value) {
				data->dragchange= 1;
				data->value= tempf;
				changed= 1;
			}
		}
		else {
			if(softrange > 256)		fac= 1.0;		/* 1px == 1 */
			else if(softrange > 32)	fac= 1.0/2.0;	/* 2px == 1 */
			else					fac= 1.0/16.0;	/* 16px == 1? */

			temp= data->startvalue + ((mx - data->dragstartx) * fac);
			temp= ui_numedit_apply_snap(temp, softmin, softmax, snap);

#if 1		/* fake moving the click start, nicer for dragging back after passing the limit */
			if(temp < softmin) {
				data->dragstartx -= (softmin-temp) / fac;
				temp= softmin;
			} else if (temp > softmax) {
				data->dragstartx += (temp-softmax) / fac;
				temp= softmax;
			}
#else
			CLAMP(temp, softmin, softmax);
#endif

			if(temp != data->value) {
				data->dragchange= 1;
				data->value= temp;
				changed= 1;
			}
		}

		data->draglastx= mx;
	}
	else {
		/* Use a non-linear mapping of the mouse drag especially for large floats (normal behavior) */
		deler= 500;
		if(!ui_is_but_float(but)) {
			/* prevent large ranges from getting too out of control */
			if (softrange > 600) deler = powf(softrange, 0.75);
			
			if (softrange < 100) deler= 200.0;
			if (softrange < 25) deler= 50.0;
		}
		deler /= fac;

		if(softrange > 11) {
			/* non linear change in mouse input- good for high precicsion */
			data->dragf+= (((float)(mx-data->draglastx))/deler) * (fabs(data->dragstartx-mx)*0.002);
		} else if (softrange > 129) { /* only scale large int buttons */
			/* non linear change in mouse input- good for high precicsionm ints need less fine tuning */
			data->dragf+= (((float)(mx-data->draglastx))/deler) * (fabs(data->dragstartx-mx)*0.004);
		} else {
			/*no scaling */
			data->dragf+= ((float)(mx-data->draglastx))/deler ;
		}
	
		CLAMP(data->dragf, 0.0, 1.0);
		data->draglastx= mx;
		tempf= (softmin + data->dragf*softrange);


		if(!ui_is_but_float(but)) {
			temp= floor(tempf+.5);

			temp= ui_numedit_apply_snap(temp, softmin, softmax, snap);

			CLAMP(temp, softmin, softmax);
			lvalue= (int)data->value;
			
			if(temp != lvalue) {
				data->dragchange= 1;
				data->value= (double)temp;
				changed= 1;
			}
		}
		else {
			temp= 0;
			tempf= ui_numedit_apply_snapf(tempf, softmin, softmax, softrange, snap);

			CLAMP(tempf, softmin, softmax);

			if(tempf != data->value) {
				data->dragchange= 1;
				data->value= tempf;
				changed= 1;
			}
		}
	}


	return changed;
}

static int ui_do_but_NUM(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;	/* mouse location scaled to fit the UI */
	int screen_mx, screen_my; /* mouse location kept at screen pixel coords */
	int click= 0;
	int retval= WM_UI_HANDLER_CONTINUE;
	
	mx= screen_mx= event->x;
	my= screen_my= event->y;

	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		/* XXX hardcoded keymap check.... */
		if(event->type == WHEELDOWNMOUSE && event->alt) {
			mx= but->x1;
			click= 1;
		}
		else if(event->type == WHEELUPMOUSE && event->alt) {
			mx= but->x2;
			click= 1;
		}
		else if(event->val==KM_PRESS) {
			if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
				retval= WM_UI_HANDLER_BREAK;
			}
			else if(event->type == LEFTMOUSE) {
				data->dragstartx= data->draglastx= ui_is_a_warp_but(but) ? screen_mx:mx;
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				retval= WM_UI_HANDLER_BREAK;
			}
			else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
				click= 1;
			else if (event->type == MINUSKEY && event->val==KM_PRESS) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				data->value = -data->value;
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				retval= WM_UI_HANDLER_BREAK;
			}
		}
		
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
			if(data->dragchange)
				button_activate_state(C, but, BUTTON_STATE_EXIT);
			else
				click= 1;
		}
		else if(event->type == MOUSEMOVE) {
			float fac;
			int snap;

			fac= 1.0f;
			if(event->shift) fac /= 10.0f;
			if(event->alt) fac /= 20.0f;
			
			snap= (event->ctrl)? (event->shift)? 2: 1: 0;

			if(ui_numedit_but_NUM(but, data, fac, snap, (ui_is_a_warp_but(but) ? screen_mx:mx)))
				ui_numedit_apply(C, block, but, data);
		}
		retval= WM_UI_HANDLER_BREAK;
	}
	else if(data->state == BUTTON_STATE_TEXT_EDITING) {
		ui_do_but_textedit(C, block, but, data, event);
		retval= WM_UI_HANDLER_BREAK;
	}
	else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
		ui_do_but_textedit_select(C, block, but, data, event);
		retval= WM_UI_HANDLER_BREAK;
	}
	
	if(click) {
		/* we can click on the side arrows to increment/decrement,
		 * or click inside to edit the value directly */
		float tempf, softmin, softmax;
		int temp;

		softmin= but->softmin;
		softmax= but->softmax;

		if(!ui_is_but_float(but)) {
			if(mx < (but->x1 + (but->x2 - but->x1)/3 - 3)) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

				temp= (int)data->value - 1;
				if(temp>=softmin && temp<=softmax)
					data->value= (double)temp;
				else
					data->cancel= 1;

				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
			else if(mx > (but->x1 + (2*(but->x2 - but->x1)/3) + 3)) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

				temp= (int)data->value + 1;
				if(temp>=softmin && temp<=softmax)
					data->value= (double)temp;
				else
					data->cancel= 1;

				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
			else
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
		}
		else {
			if(mx < (but->x1 + (but->x2 - but->x1)/3 - 3)) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

				tempf= data->value - 0.01*but->a1;
				if (tempf < softmin) tempf = softmin;
				data->value= tempf;

				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
			else if(mx > but->x1 + (2*((but->x2 - but->x1)/3) + 3)) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

				tempf= data->value + 0.01*but->a1;
				if (tempf > softmax) tempf = softmax;
				data->value= tempf;

				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
			else
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
		}

		retval= WM_UI_HANDLER_BREAK;
	}
	
	return retval;
}

static int ui_numedit_but_SLI(uiBut *but, uiHandleButtonData *data, int shift, int ctrl, int mx)
{
	float deler, f, tempf, softmin, softmax, softrange;
	int temp, lvalue, changed= 0;

	softmin= but->softmin;
	softmax= but->softmax;
	softrange= softmax - softmin;

	if(but->type==NUMSLI) deler= ((but->x2-but->x1) - 5.0*but->aspect);
	else if(but->type==HSVSLI) deler= ((but->x2-but->x1)/2 - 5.0*but->aspect);
	else if(but->type==SCROLL) {
		int horizontal= (but->x2 - but->x1 > but->y2 - but->y1);
		float size= (horizontal)? (but->x2-but->x1): -(but->y2-but->y1);
		deler= size*(but->softmax - but->softmin)/(but->softmax - but->softmin + but->a1);
	}
	else deler= (but->x2-but->x1- 5.0*but->aspect);

	f= (float)(mx-data->dragstartx)/deler + data->dragfstart;
	
	if(shift)
		f= (f-data->dragfstart)/10.0 + data->dragfstart;

	CLAMP(f, 0.0, 1.0);
	tempf= softmin + f*softrange;
	temp= floor(tempf+.5);

	if(ctrl) {
		if(tempf==softmin || tempf==softmax);
		else if(ui_is_but_float(but)) {

			if(shift) {
				if(tempf==softmin || tempf==softmax);
				else if(softmax-softmin < 2.10) tempf= 0.01*floor(100.0*tempf);
				else if(softmax-softmin < 21.0) tempf= 0.1*floor(10.0*tempf);
				else tempf= floor(tempf);
			}
			else {
				if(softmax-softmin < 2.10) tempf= 0.1*floor(10*tempf);
				else if(softmax-softmin < 21.0) tempf= floor(tempf);
				else tempf= 10.0*floor(tempf/10.0);
			}
		}
		else {
			temp= 10*(temp/10);
			tempf= temp;
		}
	}

	if(!ui_is_but_float(but)) {
		lvalue= floor(data->value+0.5);

		CLAMP(temp, softmin, softmax);

		if(temp != lvalue) {
			data->value= temp;
			data->dragchange= 1;
			changed= 1;
		}
	}
	else {
		CLAMP(tempf, softmin, softmax);

		if(tempf != data->value) {
			data->value= tempf;
			data->dragchange= 1;
			changed= 1;
		}
	}

	return changed;
}

static int ui_do_but_SLI(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my, click= 0;
	int retval= WM_UI_HANDLER_CONTINUE;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		/* XXX hardcoded keymap check.... */
		if(event->type == WHEELDOWNMOUSE && event->alt) {
			mx= but->x1;
			click= 2;
		}
		else if(event->type == WHEELUPMOUSE && event->alt) {
			mx= but->x2;
			click= 2;
		}
		else if(event->val==KM_PRESS) {
			if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->ctrl) {
				button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
				retval= WM_UI_HANDLER_BREAK;
			}
			/* alt-click on sides to get "arrows" like in NUM buttons, and match wheel usage above */
			else if(event->type == LEFTMOUSE && event->alt) {
				int halfpos = (but->x1 + but->x2) / 2;
				click = 2;
				if (mx < halfpos)
					mx = but->x1;
				else
					mx = but->x2;
			}
			else if(event->type == LEFTMOUSE) {
				data->dragstartx= mx;
				data->draglastx= mx;
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				retval= WM_UI_HANDLER_BREAK;
			}
			else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
				click= 1;
			else if (event->type == MINUSKEY && event->val==KM_PRESS) {
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				data->value = -data->value;
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				retval= WM_UI_HANDLER_BREAK;
			}
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
			if(data->dragchange)
				button_activate_state(C, but, BUTTON_STATE_EXIT);
			else
				click= 1;
		}
		else if(event->type == MOUSEMOVE) {
			if(ui_numedit_but_SLI(but, data, event->shift, event->ctrl, mx))
				ui_numedit_apply(C, block, but, data);
		}
		retval= WM_UI_HANDLER_BREAK;
	}
	else if(data->state == BUTTON_STATE_TEXT_EDITING) {
		ui_do_but_textedit(C, block, but, data, event);
		retval= WM_UI_HANDLER_BREAK;
	}
	else if(data->state == BUTTON_STATE_TEXT_SELECTING) {
		ui_do_but_textedit_select(C, block, but, data, event);
		retval= WM_UI_HANDLER_BREAK;
	}

	if(click) {
		if (click==2) {
			/* nudge slider to the left or right */
			float f, tempf, softmin, softmax, softrange;
			int temp;
			
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
			
			softmin= but->softmin;
			softmax= but->softmax;
			softrange= softmax - softmin;
			
			tempf= data->value;
			temp= (int)data->value;
			
			/* XXX useles "if", same result for f, uh??? */
			if(but->type==SLI) f= (float)(mx-but->x1)/(but->x2-but->x1);
			else f= (float)(mx- but->x1)/(but->x2-but->x1);
			
			f= softmin + f*softrange;
			
			if(!ui_is_but_float(but)) {
				if(f<temp) temp--;
				else temp++;
				
				if(temp>=softmin && temp<=softmax)
					data->value= temp;
				else
					data->cancel= 1;
			} 
			else {
				if(f<tempf) tempf-=.01;
				else tempf+=.01;
				
				if(tempf>=softmin && tempf<=softmax)
					data->value= tempf;
				else
					data->cancel= 1;
			}
			
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			retval= WM_UI_HANDLER_BREAK;
		}
		else {
			/* edit the value directly */
			button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
			retval= WM_UI_HANDLER_BREAK;
		}
	}
	
	return retval;
}

static int ui_do_but_SCROLL(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my, click= 0;
	int retval= WM_UI_HANDLER_CONTINUE;
	int horizontal= (but->x2 - but->x1 > but->y2 - but->y1);
	
	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->val==KM_PRESS) {
			if(event->type == LEFTMOUSE) {
				if(horizontal) {
					data->dragstartx= mx;
					data->draglastx= mx;
				}
				else {
					data->dragstartx= my;
					data->draglastx= my;
				}
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
				retval= WM_UI_HANDLER_BREAK;
			}
			else if(ELEM(event->type, PADENTER, RETKEY) && event->val==KM_PRESS)
				click= 1;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == MOUSEMOVE) {
			if(ui_numedit_but_SLI(but, data, 0, 0, (horizontal)? mx: my))
				ui_numedit_apply(C, block, but, data);
		}

		retval= WM_UI_HANDLER_BREAK;
	}
	
	return retval;
}


static int ui_do_but_BLOCK(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		
		/* first handle click on icondrag type button */
		if(event->type==LEFTMOUSE && but->dragpoin && event->val==KM_PRESS) {
			if(ui_but_mouse_inside_icon(but, data->region, event)) {
				button_activate_state(C, but, BUTTON_STATE_WAIT_DRAG);
				data->dragstartx= event->x;
				data->dragstarty= event->y;
				return WM_UI_HANDLER_BREAK;
			}
		}
		
		/* regular open menu */
		if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_MENU_OPEN);
			return WM_UI_HANDLER_BREAK;
		}
		else if(ELEM3(but->type, MENU, ICONROW, ICONTEXTROW)) {
			
			if(event->type == WHEELDOWNMOUSE && event->alt) {
				data->value= ui_step_name_menu(but, -1);
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				ui_apply_button(C, but->block, but, data, 1);
				return WM_UI_HANDLER_BREAK;
			}
			else if(event->type == WHEELUPMOUSE && event->alt) {
				data->value= ui_step_name_menu(but, 1);
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				ui_apply_button(C, but->block, but, data, 1);
				return WM_UI_HANDLER_BREAK;
			}
		}
		else if(but->type==COL) {
			if( ELEM(event->type, WHEELDOWNMOUSE, WHEELUPMOUSE) && event->alt) {
				float col[3];
				
				ui_get_but_vectorf(but, col);
				rgb_to_hsv(col[0], col[1], col[2], but->hsv, but->hsv+1, but->hsv+2);

				if(event->type==WHEELDOWNMOUSE)
					but->hsv[2]= CLAMPIS(but->hsv[2]-0.05f, 0.0f, 1.0f);
				else
					but->hsv[2]= CLAMPIS(but->hsv[2]+0.05f, 0.0f, 1.0f);
				
				hsv_to_rgb(but->hsv[0], but->hsv[1], but->hsv[2], data->vec, data->vec+1, data->vec+2);
				ui_set_but_vectorf(but, data->vec);
				
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				ui_apply_button(C, but->block, but, data, 1);
				return WM_UI_HANDLER_BREAK;
			}
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_DRAG) {
		
		/* this function also ends state */
		if(ui_but_start_drag(C, but, data, event)) {
			return WM_UI_HANDLER_BREAK;
		}
		
		/* outside icon quit, not needed if drag activated */
		if(0==ui_but_mouse_inside_icon(but, data->region, event)) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			data->cancel= 1;
			return WM_UI_HANDLER_BREAK;
		}
		
		if(event->type==LEFTMOUSE && event->val==KM_RELEASE) {
			button_activate_state(C, but, BUTTON_STATE_MENU_OPEN);
			return WM_UI_HANDLER_BREAK;
		}

	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_numedit_but_NORMAL(uiBut *but, uiHandleButtonData *data, int mx, int my)
{
	float dx, dy, rad, radsq, mrad, *fp;
	int mdx, mdy, changed= 1;
	
	/* button is presumed square */
	/* if mouse moves outside of sphere, it does negative normal */

	fp= data->origvec;
	rad= (but->x2 - but->x1);
	radsq= rad*rad;
	
	if(fp[2]>0.0f) {
		mdx= (rad*fp[0]);
		mdy= (rad*fp[1]);
	}
	else if(fp[2]> -1.0f) {
		mrad= rad/sqrt(fp[0]*fp[0] + fp[1]*fp[1]);
		
		mdx= 2.0f*mrad*fp[0] - (rad*fp[0]);
		mdy= 2.0f*mrad*fp[1] - (rad*fp[1]);
	}
	else mdx= mdy= 0;
	
	dx= (float)(mx+mdx-data->dragstartx);
	dy= (float)(my+mdy-data->dragstarty);

	fp= data->vec;
	mrad= dx*dx+dy*dy;
	if(mrad < radsq) {	/* inner circle */
		fp[0]= dx;
		fp[1]= dy;
		fp[2]= sqrt( radsq-dx*dx-dy*dy );
	}
	else {	/* outer circle */
		
		mrad= rad/sqrt(mrad);	// veclen
		
		dx*= (2.0f*mrad - 1.0f);
		dy*= (2.0f*mrad - 1.0f);
		
		mrad= dx*dx+dy*dy;
		if(mrad < radsq) {
			fp[0]= dx;
			fp[1]= dy;
			fp[2]= -sqrt( radsq-dx*dx-dy*dy );
		}
	}
	normalize_v3(fp);

	data->draglastx= mx;
	data->draglasty= my;

	return changed;
}

static int ui_do_but_NORMAL(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

			/* also do drag the first time */
			if(ui_numedit_but_NORMAL(but, data, mx, my))
				ui_numedit_apply(C, block, but, data);
			
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_NORMAL(but, data, mx, my))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS)
			button_activate_state(C, but, BUTTON_STATE_EXIT);

		return WM_UI_HANDLER_BREAK;
	}
	
	return WM_UI_HANDLER_CONTINUE;
}

static int ui_numedit_but_HSVCUBE(uiBut *but, uiHandleButtonData *data, int mx, int my)
{
	float rgb[3], hsv[3];
	float x, y;
	int changed= 1;
	int color_profile = but->block->color_profile;
	
	if (but->rnaprop) {
		if (RNA_property_subtype(but->rnaprop) == PROP_COLOR_GAMMA)
			color_profile = BLI_PR_NONE;
	}
	
	ui_get_but_vectorf(but, rgb);
	rgb_to_hsv(rgb[0], rgb[1], rgb[2], hsv, hsv+1, hsv+2);
		
	/* relative position within box */
	x= ((float)mx-but->x1)/(but->x2-but->x1);
	y= ((float)my-but->y1)/(but->y2-but->y1);
	CLAMP(x, 0.0, 1.0);
	CLAMP(y, 0.0, 1.0);
	
	if(but->a1==0) {
		hsv[2]= x; 
		hsv[1]= y; 
	}
	else if(but->a1==1) {
		hsv[0]= x; 				
		hsv[2]= y; 				
	}
	else if(but->a1==2) {
		hsv[0]= x; 
		hsv[1]= y; 
	}
	else if(but->a1==3) {
		hsv[0]= x; 
	}
	else if(but->a1==4) {
		hsv[1]= x; 
	}
	else if(but->a1==5) {
		hsv[2]= x; 
	}
	else if (but->a1==9){
		float range;
		
		/* vertical 'value' strip */

		/* exception only for value strip - use the range set in but->min/max */
		range = but->softmax - but->softmin;
		hsv[2] = y*range + but->softmin;
		
		if (color_profile)
			hsv[2] = srgb_to_linearrgb(hsv[2]);
		
		if (hsv[2] > but->softmax)
			hsv[2] = but->softmax;
	}

	hsv_to_rgb(hsv[0], hsv[1], hsv[2], rgb, rgb+1, rgb+2);
	copy_v3_v3(data->vec, rgb);

	data->draglastx= mx;
	data->draglasty= my;

	return changed;
}

static int ui_do_but_HSVCUBE(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

			/* also do drag the first time */
			if(ui_numedit_but_HSVCUBE(but, data, mx, my))
				ui_numedit_apply(C, block, but, data);
			
			return WM_UI_HANDLER_BREAK;
		}
		else if (event->type == ZEROKEY && event->val == KM_PRESS) {
			if (but->a1==9){
				float rgb[3], hsv[3], def_hsv[3];
				float *def;
				int len;
				
				/* reset only value */
				
				len= RNA_property_array_length(&but->rnapoin, but->rnaprop);
				if (len >= 3) {
					def= MEM_callocN(sizeof(float)*len, "reset_defaults - float");
					
					RNA_property_float_get_default_array(&but->rnapoin, but->rnaprop, def);
					rgb_to_hsv(def[0], def[1], def[2], def_hsv, def_hsv+1, def_hsv+2);
					
					ui_get_but_vectorf(but, rgb);
					rgb_to_hsv(rgb[0], rgb[1], rgb[2], hsv, hsv+1, hsv+2);
					
					hsv_to_rgb(hsv[0], hsv[1], def_hsv[2], rgb, rgb+1, rgb+2);
					ui_set_but_vectorf(but, rgb);
					
					RNA_property_update(C, &but->rnapoin, but->rnaprop);
					
					MEM_freeN(def);
				}
				return WM_UI_HANDLER_BREAK;
			}
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_HSVCUBE(but, data, mx, my))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS)
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		
		return WM_UI_HANDLER_BREAK;
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_numedit_but_HSVCIRCLE(uiBut *but, uiHandleButtonData *data, int mx, int my, int shift)
{
	rcti rect;
	int changed= 1;
	float rgb[3], hsv[3];
	
	rect.xmin= but->x1; rect.xmax= but->x2;
	rect.ymin= but->y1; rect.ymax= but->y2;
	
	ui_get_but_vectorf(but, rgb);
	rgb_to_hsv(rgb[0], rgb[1], rgb[2], hsv, hsv+1, hsv+2);
	
	/* exception, when using color wheel in 'locked' value state:
	 * allow choosing a hue for black values, by giving a tiny increment */
	if (but->flag & UI_BUT_COLOR_LOCK) { // lock
		if (hsv[2] == 0.f) hsv[2] = 0.0001f;
	}

	if(U.uiflag & USER_CONTINUOUS_MOUSE) {
		float fac= shift ? 0.05 : 1.0f;
		/* slow down the mouse, this is fairly picky */
		mx = (data->dragstartx*(1.0f-fac) + mx*fac);
		my = (data->dragstarty*(1.0f-fac) + my*fac);
	}

	ui_hsvcircle_vals_from_pos(hsv, hsv+1, &rect, (float)mx, (float)my);

	if(but->flag & UI_BUT_COLOR_CUBIC)
		hsv[1]= 1.0f - sqrt3f(1.0f - hsv[1]);

	hsv_to_rgb(hsv[0], hsv[1], hsv[2], rgb, rgb+1, rgb+2);

	if((but->flag & UI_BUT_VEC_SIZE_LOCK) && (rgb[0] || rgb[1] || rgb[2])) {
		normalize_v3(rgb);
		mul_v3_fl(rgb, but->a2);
	}

	ui_set_but_vectorf(but, rgb);
	
	data->draglastx= mx;
	data->draglasty= my;
	
	return changed;
}


static int ui_do_but_HSVCIRCLE(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;
	
	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);
	
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
			
			/* also do drag the first time */
			if(ui_numedit_but_HSVCIRCLE(but, data, mx, my, event->shift))
				ui_numedit_apply(C, block, but, data);
			
			return WM_UI_HANDLER_BREAK;
		}
		else if (event->type == ZEROKEY && event->val == KM_PRESS) {
			float rgb[3], hsv[3], def_hsv[3];
			float *def;
			int len;
			
			/* reset only saturation */
			
			len= RNA_property_array_length(&but->rnapoin, but->rnaprop);
			if (len >= 3) {
				def= MEM_callocN(sizeof(float)*len, "reset_defaults - float");
				
				RNA_property_float_get_default_array(&but->rnapoin, but->rnaprop, def);
				rgb_to_hsv(def[0], def[1], def[2], def_hsv, def_hsv+1, def_hsv+2);
				
				ui_get_but_vectorf(but, rgb);
				rgb_to_hsv(rgb[0], rgb[1], rgb[2], hsv, hsv+1, hsv+2);
				
				hsv_to_rgb(hsv[0], def_hsv[1], hsv[2], rgb, rgb+1, rgb+2);
				ui_set_but_vectorf(but, rgb);
				
				RNA_property_update(C, &but->rnapoin, but->rnaprop);
				
				MEM_freeN(def);
			}
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		/* XXX hardcoded keymap check.... */
		else if(event->type == WHEELDOWNMOUSE) {
			but->hsv[2]= CLAMPIS(but->hsv[2]-0.05f, 0.0f, 1.0f);
			ui_set_but_hsv(but);	// converts to rgb
			ui_numedit_apply(C, block, but, data);
		}
		else if(event->type == WHEELUPMOUSE) {
			but->hsv[2]= CLAMPIS(but->hsv[2]+0.05f, 0.0f, 1.0f);
			ui_set_but_hsv(but);	// converts to rgb
			ui_numedit_apply(C, block, but, data);
		}
		else if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_HSVCIRCLE(but, data, mx, my, event->shift))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		return WM_UI_HANDLER_BREAK;
	}
	
	return WM_UI_HANDLER_CONTINUE;
}


static int verg_colorband(const void *a1, const void *a2)
{
	const CBData *x1=a1, *x2=a2;
	
	if( x1->pos > x2->pos ) return 1;
	else if( x1->pos < x2->pos) return -1;
	return WM_UI_HANDLER_CONTINUE;
}

static void ui_colorband_update(ColorBand *coba)
{
	int a;
	
	if(coba->tot<2) return;
	
	for(a=0; a<coba->tot; a++) coba->data[a].cur= a;
		qsort(coba->data, coba->tot, sizeof(CBData), verg_colorband);
	for(a=0; a<coba->tot; a++) {
		if(coba->data[a].cur==coba->cur) {
			coba->cur= a;
			break;
		}
	}
}

static int ui_numedit_but_COLORBAND(uiBut *but, uiHandleButtonData *data, int mx)
{
	float dx;
	int changed= 0;

	if(data->draglastx == mx)
		return changed;

	dx= ((float)(mx - data->draglastx))/(but->x2-but->x1);
	data->dragcbd->pos += dx;
	CLAMP(data->dragcbd->pos, 0.0, 1.0);
	
	ui_colorband_update(data->coba);
	data->dragcbd= data->coba->data + data->coba->cur;	/* because qsort */
	
	data->draglastx= mx;
	changed= 1;

	return changed;
}

static int ui_do_but_COLORBAND(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	ColorBand *coba;
	CBData *cbd;
	int mx, my, a, xco, mindist= 12;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			coba= (ColorBand*)but->poin;

			if(event->ctrl) {
				/* insert new key on mouse location */
				float pos= ((float)(mx - but->x1))/(but->x2-but->x1);
				colorband_element_add(coba, pos);
				button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
			else {
				data->dragstartx= mx;
				data->dragstarty= my;
				data->draglastx= mx;
				data->draglasty= my;

				/* activate new key when mouse is close */
				for(a=0, cbd= coba->data; a<coba->tot; a++, cbd++) {
					xco= but->x1 + (cbd->pos*(but->x2-but->x1));
					xco= ABS(xco-mx);
					if(a==coba->cur) xco+= 5; // selected one disadvantage
					if(xco<mindist) {
						coba->cur= a;
						mindist= xco;
					}
				}
		
				data->dragcbd= coba->data + coba->cur;
				button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
			}

			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_COLORBAND(but, data, mx))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS)
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		
		return WM_UI_HANDLER_BREAK;
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_numedit_but_CURVE(uiBut *but, uiHandleButtonData *data, int snap, int mx, int my)
{
	CurveMapping *cumap= data->cumap;
	CurveMap *cuma= cumap->cm+cumap->cur;
	CurveMapPoint *cmp= cuma->curve;
	float fx, fy, zoomx, zoomy, offsx, offsy;
	int a, changed= 0;

	zoomx= (but->x2-but->x1)/(cumap->curr.xmax-cumap->curr.xmin);
	zoomy= (but->y2-but->y1)/(cumap->curr.ymax-cumap->curr.ymin);
	offsx= cumap->curr.xmin;
	offsy= cumap->curr.ymin;

	if(snap) {
		float d[2];

		d[0]= mx - data->dragstartx;
		d[1]= my - data->dragstarty;

		if(len_v2(d) < 3.0f)
			snap= 0;
	}

	if(data->dragsel != -1) {
		int moved_point= 0;		/* for ctrl grid, can't use orig coords because of sorting */
		
		fx= (mx-data->draglastx)/zoomx;
		fy= (my-data->draglasty)/zoomy;
		for(a=0; a<cuma->totpoint; a++) {
			if(cmp[a].flag & SELECT) {
				float origx= cmp[a].x, origy= cmp[a].y;
				cmp[a].x+= fx;
				cmp[a].y+= fy;
				if(snap) {
					cmp[a].x= 0.125f*floor(0.5f + 8.0f*cmp[a].x);
					cmp[a].y= 0.125f*floor(0.5f + 8.0f*cmp[a].y);
				}
				if(cmp[a].x!=origx || cmp[a].y!=origy)
					moved_point= 1;
			}
		}

		curvemapping_changed(cumap, 0);	/* no remove doubles */
		
		if(moved_point) {
			data->draglastx= mx;
			data->draglasty= my;
			changed= 1;
		}

		data->dragchange= 1; /* mark for selection */
	}
	else {
		fx= (mx-data->draglastx)/zoomx;
		fy= (my-data->draglasty)/zoomy;
		
		/* clamp for clip */
		if(cumap->flag & CUMA_DO_CLIP) {
			if(cumap->curr.xmin-fx < cumap->clipr.xmin)
				fx= cumap->curr.xmin - cumap->clipr.xmin;
			else if(cumap->curr.xmax-fx > cumap->clipr.xmax)
				fx= cumap->curr.xmax - cumap->clipr.xmax;
			if(cumap->curr.ymin-fy < cumap->clipr.ymin)
				fy= cumap->curr.ymin - cumap->clipr.ymin;
			else if(cumap->curr.ymax-fy > cumap->clipr.ymax)
				fy= cumap->curr.ymax - cumap->clipr.ymax;
		}				

		cumap->curr.xmin-=fx;
		cumap->curr.ymin-=fy;
		cumap->curr.xmax-=fx;
		cumap->curr.ymax-=fy;
		
		data->draglastx= mx;
		data->draglasty= my;

		changed= 1;
	}

	return changed;
}

static int ui_do_but_CURVE(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my, a, changed= 0;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			CurveMapping *cumap= (CurveMapping*)but->poin;
			CurveMap *cuma= cumap->cm+cumap->cur;
			CurveMapPoint *cmp= cuma->curve;
			float fx, fy, zoomx, zoomy, offsx, offsy;
			float dist, mindist= 200.0f; // 14 pixels radius
			int sel= -1;

			zoomx= (but->x2-but->x1)/(cumap->curr.xmax-cumap->curr.xmin);
			zoomy= (but->y2-but->y1)/(cumap->curr.ymax-cumap->curr.ymin);
			offsx= cumap->curr.xmin;
			offsy= cumap->curr.ymin;

			if(event->ctrl) {
				fx= ((float)my - but->x1)/zoomx + offsx;
				fy= ((float)my - but->y1)/zoomy + offsy;
				
				curvemap_insert(cuma, fx, fy);
				curvemapping_changed(cumap, 0);
				changed= 1;
			}

			/* check for selecting of a point */
			cmp= cuma->curve;	/* ctrl adds point, new malloc */
			for(a=0; a<cuma->totpoint; a++) {
				fx= but->x1 + zoomx*(cmp[a].x-offsx);
				fy= but->y1 + zoomy*(cmp[a].y-offsy);
				dist= (fx-mx)*(fx-mx) + (fy-my)*(fy-my);
				if(dist < mindist) {
					sel= a;
					mindist= dist;
				}
			}

			if (sel == -1) {
				/* if the click didn't select anything, check if it's clicked on the 
				 * curve itself, and if so, add a point */
				fx= ((float)mx - but->x1)/zoomx + offsx;
				fy= ((float)my - but->y1)/zoomy + offsy;
				
				cmp= cuma->table;

				/* loop through the curve segment table and find what's near the mouse.
				 * 0.05 is kinda arbitrary, but seems to be what works nicely. */
				for(a=0; a<=CM_TABLE; a++) {			
					if ( ( fabs(fx - cmp[a].x) < (0.05) ) && ( fabs(fy - cmp[a].y) < (0.05) ) ) {
					
						curvemap_insert(cuma, fx, fy);
						curvemapping_changed(cumap, 0);

						changed= 1;
						
						/* reset cmp back to the curve points again, rather than drawing segments */		
						cmp= cuma->curve;
						
						/* find newly added point and make it 'sel' */
						for(a=0; a<cuma->totpoint; a++)
							if(cmp[a].x == fx)
								sel = a;
							
						break;
					}
				}
			}

			if(sel!= -1) {
				/* ok, we move a point */
				/* deselect all if this one is deselect. except if we hold shift */
				if(event->shift==0) {
					for(a=0; a<cuma->totpoint; a++)
						cmp[a].flag &= ~SELECT;
					cmp[sel].flag |= SELECT;
				}
				else
					cmp[sel].flag ^= SELECT;
			}
			else {
				/* move the view */
				data->cancel= 1;
			}

			data->dragsel= sel;

			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;

			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_CURVE(but, data, event->ctrl, mx, my))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS) {
			if(data->dragsel != -1) {
				CurveMapping *cumap= data->cumap;
				CurveMap *cuma= cumap->cm+cumap->cur;
				CurveMapPoint *cmp= cuma->curve;

				if(!data->dragchange) {
					/* deselect all, select one */
					if(event->shift==0) {
						for(a=0; a<cuma->totpoint; a++)
							cmp[a].flag &= ~SELECT;
						cmp[data->dragsel].flag |= SELECT;
					}
				}
				else
					curvemapping_changed(cumap, 1);	/* remove doubles */
			}

			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}

		return WM_UI_HANDLER_BREAK;
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int in_scope_resize_zone(uiBut *but, int x, int y)
{
	// bottom corner return (x > but->x2 - SCOPE_RESIZE_PAD) && (y < but->y1 + SCOPE_RESIZE_PAD);
	return (y < but->y1 + SCOPE_RESIZE_PAD);
}

static int ui_numedit_but_HISTOGRAM(uiBut *but, uiHandleButtonData *data, int mx, int my)
{
	Histogram *hist = (Histogram *)but->poin;
	rcti rect;
	int changed= 1;
	float dx, dy, yfac=1.f;
	
	rect.xmin= but->x1; rect.xmax= but->x2;
	rect.ymin= but->y1; rect.ymax= but->y2;
	
	dx = mx - data->draglastx;
	dy = my - data->draglasty;
	
	
	if (in_scope_resize_zone(but, data->dragstartx, data->dragstarty)) {
		 /* resize histogram widget itself */
		hist->height = (but->y2 - but->y1) + (data->dragstarty - my);
	} else {
		/* scale histogram values */
		yfac = MIN2(powf(hist->ymax, 2.f), 1.f) * 0.5;
		hist->ymax += dy * yfac;
	
		CLAMP(hist->ymax, 1.f, 100.f);
	}
	
	data->draglastx= mx;
	data->draglasty= my;
	
	return changed;
}

static int ui_do_but_HISTOGRAM(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;
	
	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);
	
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);
			
			/* also do drag the first time */
			if(ui_numedit_but_HISTOGRAM(but, data, mx, my))
				ui_numedit_apply(C, block, but, data);
			
			return WM_UI_HANDLER_BREAK;
		}
		else if (event->type == ZEROKEY && event->val == KM_PRESS) {
			Histogram *hist = (Histogram *)but->poin;
			hist->ymax = 1.f;
			
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_HISTOGRAM(but, data, mx, my))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		return WM_UI_HANDLER_BREAK;
	}
	
	return WM_UI_HANDLER_CONTINUE;
}

static int ui_numedit_but_WAVEFORM(uiBut *but, uiHandleButtonData *data, int mx, int my)
{
	Scopes *scopes = (Scopes *)but->poin;
	rcti rect;
	int changed= 1;
	float dx, dy, yfac=1.f;

	rect.xmin= but->x1; rect.xmax= but->x2;
	rect.ymin= but->y1; rect.ymax= but->y2;

	dx = mx - data->draglastx;
	dy = my - data->draglasty;


	if (in_scope_resize_zone(but, data->dragstartx, data->dragstarty)) {
		 /* resize waveform widget itself */
		scopes->wavefrm_height = (but->y2 - but->y1) + (data->dragstarty - my);
	} else {
		/* scale waveform values */
		yfac = scopes->wavefrm_yfac;
		scopes->wavefrm_yfac += dy/200.0f;

		CLAMP(scopes->wavefrm_yfac, 0.5f, 2.f);
	}

	data->draglastx= mx;
	data->draglasty= my;

	return changed;
}

static int ui_do_but_WAVEFORM(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

			/* also do drag the first time */
			if(ui_numedit_but_WAVEFORM(but, data, mx, my))
				ui_numedit_apply(C, block, but, data);

			return WM_UI_HANDLER_BREAK;
		}
		else if (event->type == ZEROKEY && event->val == KM_PRESS) {
			Scopes *scopes = (Scopes *)but->poin;
			scopes->wavefrm_yfac = 1.f;

			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_WAVEFORM(but, data, mx, my))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		return WM_UI_HANDLER_BREAK;
	}

	return WM_UI_HANDLER_CONTINUE;
}

static int ui_numedit_but_VECTORSCOPE(uiBut *but, uiHandleButtonData *data, int mx, int my)
{
	Scopes *scopes = (Scopes *)but->poin;
	rcti rect;
	int changed= 1;
	float dx, dy;

	rect.xmin= but->x1; rect.xmax= but->x2;
	rect.ymin= but->y1; rect.ymax= but->y2;

	dx = mx - data->draglastx;
	dy = my - data->draglasty;

	if (in_scope_resize_zone(but, data->dragstartx, data->dragstarty)) {
		 /* resize vectorscope widget itself */
		scopes->vecscope_height = (but->y2 - but->y1) + (data->dragstarty - my);
	}

	data->draglastx= mx;
	data->draglasty= my;

	return changed;
}

static int ui_do_but_VECTORSCOPE(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	int mx, my;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type==LEFTMOUSE && event->val==KM_PRESS) {
			data->dragstartx= mx;
			data->dragstarty= my;
			data->draglastx= mx;
			data->draglasty= my;
			button_activate_state(C, but, BUTTON_STATE_NUM_EDITING);

			/* also do drag the first time */
			if(ui_numedit_but_VECTORSCOPE(but, data, mx, my))
				ui_numedit_apply(C, block, but, data);

			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_NUM_EDITING) {
		if(event->type == ESCKEY) {
			data->cancel= 1;
			data->escapecancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		else if(event->type == MOUSEMOVE) {
			if(mx!=data->draglastx || my!=data->draglasty) {
				if(ui_numedit_but_VECTORSCOPE(but, data, mx, my))
					ui_numedit_apply(C, block, but, data);
			}
		}
		else if(event->type==LEFTMOUSE && event->val!=KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
		}
		return WM_UI_HANDLER_BREAK;
	}

	return WM_UI_HANDLER_CONTINUE;
}

#ifdef INTERNATIONAL
static int ui_do_but_CHARTAB(bContext *C, uiBlock *block, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	/* XXX 2.50 bad global and state access */
#if 0
	float sx, sy, ex, ey;
	float width, height;
	float butw, buth;
	int mx, my, x, y, cs, che;

	mx= event->x;
	my= event->y;
	ui_window_to_block(data->region, block, &mx, &my);

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(ELEM3(event->type, LEFTMOUSE, PADENTER, RETKEY) && event->val==KM_PRESS) {
			/* Calculate the size of the button */
			width = abs(but->x2 - but->x1);
			height = abs(but->y2 - but->y1);

			butw = floor(width / 12);
			buth = floor(height / 6);

			/* Initialize variables */
			sx = but->x1;
			ex = but->x1 + butw;
			sy = but->y1 + height - buth;
			ey = but->y1 + height;

			cs = G.charstart;

			/* And the character is */
			x = (int) ((mx / butw) - 0.5);
			y = (int) (6 - ((my / buth) - 0.5));

			che = cs + (y*12) + x;

			if(che > G.charmax)
				che = 0;

			if(G.obedit)
			{
				do_textedit(0,0,che);
			}

			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
		else if(ELEM(event->type, WHEELUPMOUSE, PAGEUPKEY)) {
			for(but= block->buttons.first; but; but= but->next) {
				if(but->type == CHARTAB) {
					G.charstart = G.charstart - (12*6);
					if(G.charstart < 0)
						G.charstart = 0;
					if(G.charstart < G.charmin)
						G.charstart = G.charmin;
					ui_draw_but(but);

					//Really nasty... to update the num button from the same butblock
					for(bt= block->buttons.first; bt; bt= bt->next)
					{
						if(ELEM(bt->type, NUM, NUMABS)) {
							ui_check_but(bt);
							ui_draw_but(bt);
						}
					}
					retval=UI_CONT;
					break;
				}
			}

			return WM_UI_HANDLER_BREAK;
		}
		else if(ELEM(event->type, WHEELDOWNMOUSE, PAGEDOWNKEY)) {
			for(but= block->buttons.first; but; but= but->next)
			{
				if(but->type == CHARTAB)
				{
					G.charstart = G.charstart + (12*6);
					if(G.charstart > (0xffff - 12*6))
						G.charstart = 0xffff - (12*6);
					if(G.charstart > G.charmax - 12*6)
						G.charstart = G.charmax - 12*6;
					ui_draw_but(but);

					for(bt= block->buttons.first; bt; bt= bt->next)
					{
						if(ELEM(bt->type, NUM, NUMABS)) {
							ui_check_but(bt);
							ui_draw_but(bt);
						}
					}
					
					but->flag |= UI_ACTIVE;
					retval=UI_RETURN_OK;
					break;
				}
			}

			return WM_UI_HANDLER_BREAK;
		}
	}
#endif

	return WM_UI_HANDLER_CONTINUE;
}
#endif


static int ui_do_but_LINK(bContext *C, uiBut *but, uiHandleButtonData *data, wmEvent *event)
{
	ARegion *ar= CTX_wm_region(C);
	
	but->linkto[0]= event->x-ar->winrct.xmin;
	but->linkto[1]= event->y-ar->winrct.ymin;
	
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		if(event->type == LEFTMOUSE && event->val==KM_PRESS) {
			button_activate_state(C, but, BUTTON_STATE_WAIT_RELEASE);
			return WM_UI_HANDLER_BREAK;
		}
		else if(event->type == LEFTMOUSE && but->block->handle) {
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_RELEASE) {
		
		if(event->type == LEFTMOUSE && event->val!=KM_PRESS) {
			if(!(but->flag & UI_SELECT))
				data->cancel= 1;
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}
	
	return WM_UI_HANDLER_CONTINUE;
}

static void but_shortcut_name_func(bContext *C, void *arg1, int event)
{
	uiBut *but = (uiBut *)arg1;
	
	char buf[512], *butstr, *cpoin;
	
	if (but->optype) {
		IDProperty *prop= (but->opptr)? but->opptr->data: NULL;
		
		/* complex code to change name of button */
		if(WM_key_event_operator_string(C, but->optype->idname, but->opcontext, prop, buf, sizeof(buf))) {
			
			butstr= MEM_mallocN(strlen(but->str)+strlen(buf)+2, "menu_block_set_keymaps");
			
			// XXX but->str changed... should not, remove the hotkey from it
			cpoin= strchr(but->str, '|');
			if(cpoin) *cpoin= 0;		
			
			strcpy(butstr, but->str);
			strcat(butstr, "|");
			strcat(butstr, buf);
			
			but->str= but->strdata;
			BLI_strncpy(but->str, butstr, sizeof(but->strdata));
			MEM_freeN(butstr);
			
			ui_check_but(but);
		} else {
			/* shortcut was removed */
			cpoin= strchr(but->str, '|');
			if(cpoin) *cpoin= 0;
		}
	}
}

static uiBlock *menu_change_shortcut(bContext *C, ARegion *ar, void *arg)
{
	uiBlock *block;
	uiBut *but = (uiBut *)arg;
	wmKeyMap *km;
	wmKeyMapItem *kmi;
	PointerRNA ptr;
	uiLayout *layout;
	uiStyle *style= U.uistyles.first;
	IDProperty *prop= (but->opptr)? but->opptr->data: NULL;
	int kmi_id = WM_key_event_operator_id(C, but->optype->idname, but->opcontext, prop, 1, &km);

	kmi = WM_keymap_item_find_id(km, kmi_id);
	
	RNA_pointer_create(NULL, &RNA_KeyMapItem, kmi, &ptr);
	
	block= uiBeginBlock(C, ar, "_popup", UI_EMBOSS);
	uiBlockSetHandleFunc(block, but_shortcut_name_func, but);
	uiBlockSetFlag(block, UI_BLOCK_RET_1|UI_BLOCK_MOVEMOUSE_QUIT);
	uiBlockSetDirection(block, UI_CENTER);
	
	layout= uiBlockLayout(block, UI_LAYOUT_VERTICAL, UI_LAYOUT_PANEL, 0, 0, 200, 20, style);
	
	uiItemR(layout, &ptr, "type", UI_ITEM_R_FULL_EVENT|UI_ITEM_R_IMMEDIATE, "", 0);
	
	uiPopupBoundsBlock(block, 6, 100, 10);
	uiEndBlock(C, block);
	
	return block;
}

static uiBlock *menu_add_shortcut(bContext *C, ARegion *ar, void *arg)
{
	uiBlock *block;
	uiBut *but = (uiBut *)arg;
	wmKeyMap *km;
	wmKeyMapItem *kmi;
	PointerRNA ptr;
	uiLayout *layout;
	uiStyle *style= U.uistyles.first;
	IDProperty *prop= (but->opptr)? but->opptr->data: NULL;
	
	km = WM_keymap_guess_opname(C, but->optype->idname);		
	kmi = WM_keymap_add_item(km, but->optype->idname, AKEY, KM_PRESS, 0, 0);
	MEM_freeN(kmi->properties);
	if (prop)
		kmi->properties= IDP_CopyProperty(prop);
	
	RNA_pointer_create(NULL, &RNA_KeyMapItem, kmi, &ptr);
	
	block= uiBeginBlock(C, ar, "_popup", UI_EMBOSS);
	uiBlockSetHandleFunc(block, but_shortcut_name_func, but);
	uiBlockSetFlag(block, UI_BLOCK_RET_1);
	uiBlockSetDirection(block, UI_CENTER);
	
	layout= uiBlockLayout(block, UI_LAYOUT_VERTICAL, UI_LAYOUT_PANEL, 0, 0, 200, 20, style);

	uiItemR(layout, &ptr, "type", UI_ITEM_R_FULL_EVENT|UI_ITEM_R_IMMEDIATE, "", 0);
	
	uiPopupBoundsBlock(block, 6, 100, 10);
	uiEndBlock(C, block);
	
	return block;
}

static void popup_change_shortcut_func(bContext *C, void *arg1, void *arg2)
{
	uiBut *but = (uiBut *)arg1;
	button_timers_tooltip_remove(C, but);
	uiPupBlock(C, menu_change_shortcut, but);
}

static void remove_shortcut_func(bContext *C, void *arg1, void *arg2)
{
	uiBut *but = (uiBut *)arg1;
	wmKeyMap *km;
	wmKeyMapItem *kmi;
	IDProperty *prop= (but->opptr)? but->opptr->data: NULL;
	int kmi_id = WM_key_event_operator_id(C, but->optype->idname, but->opcontext, prop, 1, &km);
	
	kmi = WM_keymap_item_find_id(km, kmi_id);
	WM_keymap_remove_item(km, kmi);
	
	but_shortcut_name_func(C, but, 0);
}

static void popup_add_shortcut_func(bContext *C, void *arg1, void *arg2)
{
	uiBut *but = (uiBut *)arg1;
	button_timers_tooltip_remove(C, but);
	uiPupBlock(C, menu_add_shortcut, but);
}


static int ui_but_menu(bContext *C, uiBut *but)
{
	uiPopupMenu *pup;
	uiLayout *layout;
	int length;
	char *name;

	if((but->rnapoin.data && but->rnaprop)==0 && but->optype==NULL)
		return 0;
	
	button_timers_tooltip_remove(C, but);

	if(but->rnaprop)
		name= (char*)RNA_property_ui_name(but->rnaprop);
	else if (but->optype)
		name= but->optype->name;
	else
		name= "<needs_name>"; // XXX - should never happen.

	pup= uiPupMenuBegin(C, name, 0);
	layout= uiPupMenuLayout(pup);
	
	uiLayoutSetOperatorContext(layout, WM_OP_INVOKE_DEFAULT);

	if(but->rnapoin.data && but->rnaprop) {

		length= RNA_property_array_length(&but->rnapoin, but->rnaprop);
		
		/* Keyframes */
		if(but->flag & UI_BUT_ANIMATED_KEY) {
			if(length) {
				uiItemBooleanO(layout, "Replace Keyframes", 0, "ANIM_OT_keyframe_insert_button", "all", 1);
				uiItemBooleanO(layout, "Replace Single Keyframe", 0, "ANIM_OT_keyframe_insert_button", "all", 0);
				uiItemBooleanO(layout, "Delete Keyframes", 0, "ANIM_OT_keyframe_delete_button", "all", 1);
				uiItemBooleanO(layout, "Delete Single Keyframe", 0, "ANIM_OT_keyframe_delete_button", "all", 0);
			}
			else {
				uiItemBooleanO(layout, "Replace Keyframe", 0, "ANIM_OT_keyframe_insert_button", "all", 0);
				uiItemBooleanO(layout, "Delete Keyframe", 0, "ANIM_OT_keyframe_delete_button", "all", 0);
			}
		}
		else if(but->flag & UI_BUT_DRIVEN);
		else if(RNA_property_animateable(&but->rnapoin, but->rnaprop)) {
			if(length) {
				uiItemBooleanO(layout, "Insert Keyframes", 0, "ANIM_OT_keyframe_insert_button", "all", 1);
				uiItemBooleanO(layout, "Insert Single Keyframe", 0, "ANIM_OT_keyframe_insert_button", "all", 0);
			}
			else
				uiItemBooleanO(layout, "Insert Keyframe", 0, "ANIM_OT_keyframe_insert_button", "all", 0);
		}
		
		/* Drivers */
		if(but->flag & UI_BUT_DRIVEN) {
			uiItemS(layout);

			if(length) {
				uiItemBooleanO(layout, "Delete Drivers", 0, "ANIM_OT_driver_button_remove", "all", 1);
				uiItemBooleanO(layout, "Delete Single Driver", 0, "ANIM_OT_driver_button_remove", "all", 0);
			}
			else
				uiItemBooleanO(layout, "Delete Driver", 0, "ANIM_OT_driver_button_remove", "all", 0);

			uiItemO(layout, "Copy Driver", 0, "ANIM_OT_copy_driver_button");
			if (ANIM_driver_can_paste())
				uiItemO(layout, "Paste Driver", 0, "ANIM_OT_paste_driver_button");
		}
		else if(but->flag & UI_BUT_ANIMATED_KEY);
		else if(RNA_property_animateable(&but->rnapoin, but->rnaprop)) {
			uiItemS(layout);

			if(length) {
				uiItemBooleanO(layout, "Add Drivers", 0, "ANIM_OT_driver_button_add", "all", 1);
				uiItemBooleanO(layout, "Add Single Driver", 0, "ANIM_OT_driver_button_add", "all", 0);
			}
			else
				uiItemBooleanO(layout, "Add Driver", 0, "ANIM_OT_driver_button_add", "all", 0);

			if (ANIM_driver_can_paste())
				uiItemO(layout, "Paste Driver", 0, "ANIM_OT_paste_driver_button");
		}
		
		/* Keying Sets */
		if(RNA_property_animateable(&but->rnapoin, but->rnaprop)) {
			uiItemS(layout);

			if(length) {
				uiItemBooleanO(layout, "Add All to Keying Set", 0, "ANIM_OT_keyingset_button_add", "all", 1);
				uiItemBooleanO(layout, "Add Single to Keying Set", 0, "ANIM_OT_keyingset_button_add", "all", 0);
				uiItemO(layout, "Remove from Keying Set", 0, "ANIM_OT_keyingset_button_remove");
			}
			else {
				uiItemBooleanO(layout, "Add to Keying Set", 0, "ANIM_OT_keyingset_button_add", "all", 0);
				uiItemO(layout, "Remove from Keying Set", 0, "ANIM_OT_keyingset_button_remove");
			}
		}
		
		uiItemS(layout);
		
		/* Property Operators */
		
		//Copy Property Value
		//Paste Property Value
		
		if(length) {
			uiItemBooleanO(layout, "Reset All to Default Values", 0, "UI_OT_reset_default_button", "all", 1);
			uiItemBooleanO(layout, "Reset Single to Default Value", 0, "UI_OT_reset_default_button", "all", 0);
		}
		else
			uiItemO(layout, "Reset to Default Value", 0, "UI_OT_reset_default_button");
		
		uiItemO(layout, "Copy Data Path", 0, "UI_OT_copy_data_path_button");
		uiItemO(layout, "Copy To Selected", 0, "UI_OT_copy_to_selected_button");

		uiItemS(layout);
	}

	/* Operator buttons */
	if(but->optype) {
		uiBlock *block = uiLayoutGetBlock(layout);
		uiBut *but2;
		IDProperty *prop= (but->opptr)? but->opptr->data: NULL;
		int w = uiLayoutGetWidth(layout);
		wmKeyMap *km;
		wmKeyMapItem *kmi= NULL;
		int kmi_id= WM_key_event_operator_id(C, but->optype->idname, but->opcontext, prop, 1, &km);

		if (kmi_id)
			kmi= WM_keymap_item_find_id(km, kmi_id);

		/* keyboard shortcuts */
		if ((kmi) && ISKEYBOARD(kmi->type)) {

			// would rather use a block but, but gets weirdly positioned...
			//uiDefBlockBut(block, menu_change_shortcut, but, "Change Shortcut", 0, 0, uiLayoutGetWidth(layout), UI_UNIT_Y, "");
			
			but2 = uiDefIconTextBut(block, BUT, 0, 0, "Change Shortcut", 0, 0, w, UI_UNIT_Y, NULL, 0, 0, 0, 0, "");
			uiButSetFunc(but2, popup_change_shortcut_func, but, NULL);

			but2 = uiDefIconTextBut(block, BUT, 0, 0, "Remove Shortcut", 0, 0, w, UI_UNIT_Y, NULL, 0, 0, 0, 0, "");
			uiButSetFunc(but2, remove_shortcut_func, but, NULL);
		}
		/* only show 'add' if there's a suitable key map for it to go in */
		else if (WM_keymap_guess_opname(C, but->optype->idname)) {
			but2 = uiDefIconTextBut(block, BUT, 0, 0, "Add Shortcut", 0, 0, w, UI_UNIT_Y, NULL, 0, 0, 0, 0, "");
			uiButSetFunc(but2, popup_add_shortcut_func, but, NULL);
		}
		
		uiItemS(layout);
	}

	
	{	/* Docs */
		char buf[512];
		PointerRNA ptr_props;

		if(but->rnapoin.data && but->rnaprop) {
			sprintf(buf, "%s.%s", RNA_struct_identifier(but->rnapoin.type), RNA_property_identifier(but->rnaprop));

			WM_operator_properties_create(&ptr_props, "WM_OT_doc_view");
			RNA_string_set(&ptr_props, "doc_id", buf);
			uiItemFullO(layout, "WM_OT_doc_view", "View Docs", 0, ptr_props.data, WM_OP_EXEC_DEFAULT, 0);


			WM_operator_properties_create(&ptr_props, "WM_OT_doc_edit");
			RNA_string_set(&ptr_props, "doc_id", buf);
			RNA_string_set(&ptr_props, "doc_new", RNA_property_description(but->rnaprop));

			uiItemFullO(layout, "WM_OT_doc_edit", "Submit Description", 0, ptr_props.data, WM_OP_INVOKE_DEFAULT, 0);
		}
		else if (but->optype) {
			WM_operator_py_idname(buf, but->optype->idname);

			WM_operator_properties_create(&ptr_props, "WM_OT_doc_view");
			RNA_string_set(&ptr_props, "doc_id", buf);
			uiItemFullO(layout, "WM_OT_doc_view", "View Docs", 0, ptr_props.data, WM_OP_EXEC_DEFAULT, 0);


			WM_operator_properties_create(&ptr_props, "WM_OT_doc_edit");
			RNA_string_set(&ptr_props, "doc_id", buf);
			RNA_string_set(&ptr_props, "doc_new", but->optype->description);

			uiItemFullO(layout, "WM_OT_doc_edit", "Submit Description", 0, ptr_props.data, WM_OP_INVOKE_DEFAULT, 0);
		}
	}

	uiPupMenuEnd(C, pup);

	return 1;
}

static int ui_do_button(bContext *C, uiBlock *block, uiBut *but, wmEvent *event)
{
	uiHandleButtonData *data;
	int retval;

	data= but->active;
	retval= WM_UI_HANDLER_CONTINUE;

	if(but->flag & UI_BUT_DISABLED)
		return WM_UI_HANDLER_CONTINUE;

	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		/* handle copy-paste */
		if(ELEM(event->type, CKEY, VKEY) && event->val==KM_PRESS && (event->ctrl || event->oskey)) {
			ui_but_copy_paste(C, but, data, (event->type == CKEY)? 'c': 'v');
			return WM_UI_HANDLER_BREAK;
		}
		/* handle drop */
		else if(event->type == EVT_DROP) {
			ui_but_drop	(C, event, but, data);
		}
		/* handle keyframing */
		else if(event->type == IKEY && !ELEM3(1, event->ctrl, event->oskey, event->shift) && event->val == KM_PRESS) {
			if(event->alt)
				ui_but_anim_delete_keyframe(C);
			else
				ui_but_anim_insert_keyframe(C);
			
			ED_region_tag_redraw(CTX_wm_region(C));
			
			return WM_UI_HANDLER_BREAK;
		}
		/* handle drivers */
		else if(event->type == DKEY && !ELEM3(1, event->ctrl, event->oskey, event->shift) && event->val == KM_PRESS) {
			if(event->alt)
				ui_but_anim_remove_driver(C);
			else
				ui_but_anim_add_driver(C);
				
			ED_region_tag_redraw(CTX_wm_region(C));
			
			return WM_UI_HANDLER_BREAK;
		}
		/* handle keyingsets */
		else if(event->type == KKEY && !ELEM3(1, event->ctrl, event->oskey, event->shift) && event->val == KM_PRESS) {
			if(event->alt)
				ui_but_anim_remove_keyingset(C);
			else
				ui_but_anim_add_keyingset(C);
				
			ED_region_tag_redraw(CTX_wm_region(C));
			
			return WM_UI_HANDLER_BREAK;
		}
		/* reset to default */
		else if(ELEM(event->type, ZEROKEY,PAD0) && event->val == KM_PRESS) {
			if (!(ELEM3(but->type, HSVCIRCLE, HSVCUBE, HISTOGRAM)))
				ui_set_but_default(C, but);
		}
		/* handle menu */
		else if(event->type == RIGHTMOUSE && event->val == KM_PRESS) {
			/* RMB has two options now */
			if (ui_but_menu(C, but)) {
				return WM_UI_HANDLER_BREAK;
			}
		}
	}

	/* verify if we can edit this button */
	if(ELEM(event->type, LEFTMOUSE, RETKEY)) {
		/* this should become disabled button .. */
		if(but->lock) {
			if(but->lockstr) {
				BKE_report(NULL, RPT_WARNING, but->lockstr);
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				return WM_UI_HANDLER_BREAK;
			}
		} 
		else if(but->pointype && but->poin==0) {
			/* there's a pointer needed */
			BKE_reportf(NULL, RPT_WARNING, "DoButton pointer error: %s", but->str);
			button_activate_state(C, but, BUTTON_STATE_EXIT);
			return WM_UI_HANDLER_BREAK;
		}
	}

	switch(but->type) {
	case BUT:
		retval= ui_do_but_BUT(C, but, data, event);
		break;
	case KEYEVT:
		retval= ui_do_but_KEYEVT(C, but, data, event);
		break;
	case HOTKEYEVT:
		retval= ui_do_but_HOTKEYEVT(C, but, data, event);
		break;
	case TOGBUT: 
	case TOG: 
	case TOGR: 
	case ICONTOG:
	case ICONTOGN:
	case TOGN:
	case BUT_TOGDUAL:
	case OPTION:
	case OPTIONN:
		retval= ui_do_but_TOG(C, but, data, event);
		break;
	case SCROLL:
		retval= ui_do_but_SCROLL(C, block, but, data, event);
		break;
	case NUM:
	case NUMABS:
		retval= ui_do_but_NUM(C, block, but, data, event);
		break;
	case SLI:
	case NUMSLI:
	case HSVSLI:
		retval= ui_do_but_SLI(C, block, but, data, event);
		break;
	case ROUNDBOX:	
	case LISTBOX:
	case LABEL:	
	case TOG3:	
	case ROW:
	case LISTROW:
	case BUT_IMAGE:
	case PROGRESSBAR:
		retval= ui_do_but_EXIT(C, but, data, event);
		break;
	case HISTOGRAM:
		retval= ui_do_but_HISTOGRAM(C, block, but, data, event);
		break;
	case WAVEFORM:
		retval= ui_do_but_WAVEFORM(C, block, but, data, event);
		break;
	case VECTORSCOPE:
		retval= ui_do_but_VECTORSCOPE(C, block, but, data, event);
		break;
	case TEX:
	case IDPOIN:
	case SEARCH_MENU:
		retval= ui_do_but_TEX(C, block, but, data, event);
		break;
	case MENU:
	case ICONROW:
	case ICONTEXTROW:
	case BLOCK:
	case PULLDOWN:
		retval= ui_do_but_BLOCK(C, but, data, event);
		break;
	case BUTM:
		retval= ui_do_but_BUT(C, but, data, event);
		break;
	case COL:
		if(but->a1 == 9)  // signal to prevent calling up color picker
			retval= ui_do_but_EXIT(C, but, data, event);
		else
			retval= ui_do_but_BLOCK(C, but, data, event);
		break;
	case BUT_NORMAL:
		retval= ui_do_but_NORMAL(C, block, but, data, event);
		break;
	case BUT_COLORBAND:
		retval= ui_do_but_COLORBAND(C, block, but, data, event);
		break;
	case BUT_CURVE:
		retval= ui_do_but_CURVE(C, block, but, data, event);
		break;
	case HSVCUBE:
		retval= ui_do_but_HSVCUBE(C, block, but, data, event);
		break;
	case HSVCIRCLE:
		retval= ui_do_but_HSVCIRCLE(C, block, but, data, event);
		break;
#ifdef INTERNATIONAL
	case CHARTAB:
		retval= ui_do_but_CHARTAB(C, block, but, data, event);
		break;
#endif

	case LINK:
	case INLINK:
		retval= ui_do_but_LINK(C, but, data, event);
		break;
	}
	
	return retval;
}

/* ************************ button utilities *********************** */

static int ui_but_contains_pt(uiBut *but, int mx, int my)
{
	return ((but->x1<mx && but->x2>=mx) && (but->y1<my && but->y2>=my));
}

static uiBut *ui_but_find_activated(ARegion *ar)
{
	uiBlock *block;
	uiBut *but;

	for(block=ar->uiblocks.first; block; block=block->next)
		for(but=block->buttons.first; but; but= but->next)
			if(but->active)
				return but;

	return NULL;
}

int ui_button_is_active(ARegion *ar)
{
	return (ui_but_find_activated(ar) != NULL);
}

/* returns TRUE if highlighted button allows drop of names */
/* called in region context */
int UI_but_active_drop_name(bContext *C)
{
	ARegion *ar= CTX_wm_region(C);
	uiBut *but= ui_but_find_activated(ar);

	if(but) {
		if(ELEM3(but->type, TEX, IDPOIN, SEARCH_MENU))
			return 1;
	}
	
	return 0;
}

static void ui_blocks_set_tooltips(ARegion *ar, int enable)
{
	uiBlock *block;

	if(!ar)
		return;

	/* we disabled buttons when when they were already shown, and
	 * re-enable them on mouse move */
	for(block=ar->uiblocks.first; block; block=block->next)
		block->tooltipdisabled= !enable;
}

static int ui_mouse_inside_region(ARegion *ar, int x, int y)
{
	uiBlock *block;
	
	/* check if the mouse is in the region */
	if(!BLI_in_rcti(&ar->winrct, x, y)) {
		for(block=ar->uiblocks.first; block; block=block->next)
			block->auto_open= 0;
		
		return 0;
	}

	/* also, check that with view2d, that the mouse is not over the scrollbars 
	 * NOTE: care is needed here, since the mask rect may include the scrollbars
	 * even when they are not visible, so we need to make a copy of the mask to
	 * use to check
	 */
	if(ar->v2d.mask.xmin!=ar->v2d.mask.xmax) {
		View2D *v2d= &ar->v2d;
		rcti mask_rct;
		int mx, my;
		
		/* convert window coordinates to region coordinates */
		mx= x;
		my= y;
		ui_window_to_region(ar, &mx, &my);
		
		/* make a copy of the mask rect, and tweak accordingly for hidden scrollbars */
		mask_rct.xmin= v2d->mask.xmin;
		mask_rct.xmax= v2d->mask.xmax;
		mask_rct.ymin= v2d->mask.ymin;
		mask_rct.ymax= v2d->mask.ymax;
		
		if (v2d->scroll & (V2D_SCROLL_VERTICAL_HIDE|V2D_SCROLL_VERTICAL_FULLR)) {
			if (v2d->scroll & V2D_SCROLL_LEFT)
				mask_rct.xmin= v2d->vert.xmin;
			else if (v2d->scroll & V2D_SCROLL_RIGHT)
				mask_rct.xmax= v2d->vert.xmax;
		}
		if (v2d->scroll & (V2D_SCROLL_HORIZONTAL_HIDE|V2D_SCROLL_HORIZONTAL_FULLR)) {
			if (v2d->scroll & (V2D_SCROLL_BOTTOM|V2D_SCROLL_BOTTOM_O))
				mask_rct.ymin= v2d->hor.ymin;
			else if (v2d->scroll & V2D_SCROLL_TOP)
				mask_rct.ymax= v2d->hor.ymax;
		}
		
		/* check if in the rect */
		if(!BLI_in_rcti(&mask_rct, mx, my)) 
			return 0;
	}
	
	return 1;
}

static int ui_mouse_inside_button(ARegion *ar, uiBut *but, int x, int y)
{
	if(!ui_mouse_inside_region(ar, x, y))
		return 0;

	ui_window_to_block(ar, but->block, &x, &y);

	if(!ui_but_contains_pt(but, x, y))
		return 0;
	
	return 1;
}

static uiBut *ui_but_find_mouse_over(wmWindow *win, ARegion *ar, int x, int y)
{
	uiBlock *block;
	uiBut *but, *butover= NULL;
	int mx, my;

//	if(!win->active)
//		return NULL;
	if(!ui_mouse_inside_region(ar, x, y))
		return NULL;

	for(block=ar->uiblocks.first; block; block=block->next) {
		mx= x;
		my= y;
		ui_window_to_block(ar, block, &mx, &my);

		for(but=block->buttons.first; but; but= but->next) {
			/* note, LABEL is included for hilights, this allows drags */
			if(but->type==LABEL && but->dragpoin==NULL)
				continue;
			if(ELEM3(but->type, ROUNDBOX, SEPR, LISTBOX))
				continue;
			if(but->flag & UI_HIDDEN)
				continue;
			if(ui_but_contains_pt(but, mx, my))
				butover= but;
		}
	}

	return butover;
}

static uiBut *ui_list_find_mouse_over(wmWindow *win, ARegion *ar, int x, int y)
{
	uiBlock *block;
	uiBut *but;
	int mx, my;

//	if(!win->active)
//		return NULL;
	if(!ui_mouse_inside_region(ar, x, y))
		return NULL;

	for(block=ar->uiblocks.first; block; block=block->next) {
		mx= x;
		my= y;
		ui_window_to_block(ar, block, &mx, &my);

		for(but=block->buttons.last; but; but= but->prev)
			if(but->type == LISTBOX && ui_but_contains_pt(but, mx, my))
				return but;
	}

	return NULL;
}

/* ****************** button state handling **************************/

static int button_modal_state(uiHandleButtonState state)
{
	return ELEM6(state, BUTTON_STATE_WAIT_RELEASE, BUTTON_STATE_WAIT_KEY_EVENT,
		BUTTON_STATE_NUM_EDITING, BUTTON_STATE_TEXT_EDITING,
		BUTTON_STATE_TEXT_SELECTING, BUTTON_STATE_MENU_OPEN);
}

static void button_timers_tooltip_remove(bContext *C, uiBut *but)
{
	uiHandleButtonData *data;

	data= but->active;

	if(data->tooltiptimer) {
		WM_event_remove_timer(data->wm, data->window, data->tooltiptimer);
		data->tooltiptimer= NULL;
	}
	if(data->tooltip) {
		ui_tooltip_free(C, data->tooltip);
		data->tooltip= NULL;
	}

	if(data->autoopentimer) {
		WM_event_remove_timer(data->wm, data->window, data->autoopentimer);
		data->autoopentimer= NULL;
	}
}

static void button_tooltip_timer_reset(bContext *C, uiBut *but)
{
	wmWindowManager *wm= CTX_wm_manager(C);
	uiHandleButtonData *data;

	data= but->active;

	if(data->tooltiptimer) {
		WM_event_remove_timer(data->wm, data->window, data->tooltiptimer);
		data->tooltiptimer= NULL;
	}

	if(U.flag & USER_TOOLTIPS)
		if(!but->block->tooltipdisabled)
			if(!wm->drags.first)
				data->tooltiptimer= WM_event_add_timer(data->wm, data->window, TIMER, BUTTON_TOOLTIP_DELAY);
}

static void button_activate_state(bContext *C, uiBut *but, uiHandleButtonState state)
{
	uiHandleButtonData *data;

	data= but->active;
	if(data->state == state)
		return;

	/* highlight has timers for tooltips and auto open */
	if(state == BUTTON_STATE_HIGHLIGHT) {
		but->flag &= ~UI_SELECT;

		button_tooltip_timer_reset(C, but);

		/* automatic open pulldown block timer */
		if(ELEM3(but->type, BLOCK, PULLDOWN, ICONTEXTROW)) {
			if(data->used_mouse && !data->autoopentimer) {
				int time;

				if(but->block->auto_open==2) time= 1;    // test for toolbox
				else if((but->block->flag & UI_BLOCK_LOOP && but->type != BLOCK) || but->block->auto_open) time= 5*U.menuthreshold2;
				else if(U.uiflag & USER_MENUOPENAUTO) time= 5*U.menuthreshold1;
				else time= -1;

				if(time >= 0)
					data->autoopentimer= WM_event_add_timer(data->wm, data->window, TIMER, 0.02*(double)time);
			}
		}
	}
	else {
		but->flag |= UI_SELECT;
		button_timers_tooltip_remove(C, but);
	}
	
	/* text editing */
	if(state == BUTTON_STATE_TEXT_EDITING && data->state != BUTTON_STATE_TEXT_SELECTING)
		ui_textedit_begin(C, but, data);
	else if(data->state == BUTTON_STATE_TEXT_EDITING && state != BUTTON_STATE_TEXT_SELECTING)
		ui_textedit_end(C, but, data);
	else if(data->state == BUTTON_STATE_TEXT_SELECTING && state != BUTTON_STATE_TEXT_EDITING)
		ui_textedit_end(C, but, data);
	
	/* number editing */
	if(state == BUTTON_STATE_NUM_EDITING) {
		if(ui_is_a_warp_but(but))
			WM_cursor_grab(CTX_wm_window(C), TRUE, TRUE, NULL);
		ui_numedit_begin(but, data);
	} else if(data->state == BUTTON_STATE_NUM_EDITING) {
		ui_numedit_end(but, data);
		if(ui_is_a_warp_but(but))
			WM_cursor_ungrab(CTX_wm_window(C));
	}
	/* menu open */
	if(state == BUTTON_STATE_MENU_OPEN)
		ui_blockopen_begin(C, but, data);
	else if(data->state == BUTTON_STATE_MENU_OPEN)
		ui_blockopen_end(C, but, data);

	/* add a short delay before exiting, to ensure there is some feedback */
	if(state == BUTTON_STATE_WAIT_FLASH) {
		data->flashtimer= WM_event_add_timer(data->wm, data->window, TIMER, BUTTON_FLASH_DELAY);
	}
	else if(data->flashtimer) {
		WM_event_remove_timer(data->wm, data->window, data->flashtimer);
		data->flashtimer= NULL;
	}

	/* add a blocking ui handler at the window handler for blocking, modal states
	 * but not for popups, because we already have a window level handler*/
	if(!(but->block->handle && but->block->handle->popup)) {
		if(button_modal_state(state)) {
			if(!button_modal_state(data->state))
				WM_event_add_ui_handler(C, &data->window->modalhandlers, ui_handler_region_menu, NULL, data);
		}
		else {
			if(button_modal_state(data->state))
				WM_event_remove_ui_handler(&data->window->modalhandlers, ui_handler_region_menu, NULL, data);
		}
	}
	
	/* wait for mousemove to enable drag */
	if(state == BUTTON_STATE_WAIT_DRAG) {
		but->flag &= ~UI_SELECT;
	}

	data->state= state;

	if(state != BUTTON_STATE_EXIT) {
		/* When objects for eg. are removed, running ui_check_but()
		 * can access the removed data - so disable update on exit */
		ui_check_but(but);
	}

	/* redraw */
	ED_region_tag_redraw(data->region);
}

static void button_activate_init(bContext *C, ARegion *ar, uiBut *but, uiButtonActivateType type)
{
	uiHandleButtonData *data;

	/* setup struct */
	data= MEM_callocN(sizeof(uiHandleButtonData), "uiHandleButtonData");
	data->wm= CTX_wm_manager(C);
	data->window= CTX_wm_window(C);
	data->region= ar;
	if( ELEM(but->type, BUT_CURVE, SEARCH_MENU) );  // XXX curve is temp
	else data->interactive= 1;
	
	data->state = BUTTON_STATE_INIT;

	/* activate button */
	but->flag |= UI_ACTIVE;
	but->active= data;

	/* we disable auto_open in the block after a threshold, because we still
	 * want to allow auto opening adjacent menus even if no button is activated
	 * inbetween going over to the other button, but only for a short while */
	if(type == BUTTON_ACTIVATE_OVER && but->block->auto_open)
		if(but->block->auto_open_last+BUTTON_AUTO_OPEN_THRESH < PIL_check_seconds_timer())
			but->block->auto_open= 0;

	if(type == BUTTON_ACTIVATE_OVER) {
		data->used_mouse= 1;
	}
	button_activate_state(C, but, BUTTON_STATE_HIGHLIGHT);
	
	/* activate right away */
	if(but->flag & UI_BUT_IMMEDIATE) {
		if(but->type==HOTKEYEVT)
			button_activate_state(C, but, BUTTON_STATE_WAIT_KEY_EVENT);
		/* .. more to be added here */
	}
	
	if(type == BUTTON_ACTIVATE_OPEN) {
		button_activate_state(C, but, BUTTON_STATE_MENU_OPEN);

		/* activate first button in submenu */
		if(data->menu && data->menu->region) {
			ARegion *subar= data->menu->region;
			uiBlock *subblock= subar->uiblocks.first;
			uiBut *subbut;
			
			if(subblock) {
				subbut= ui_but_first(subblock);

				if(subbut)
					ui_handle_button_activate(C, subar, subbut, BUTTON_ACTIVATE);
			}
		}
	}
	else if(type == BUTTON_ACTIVATE_TEXT_EDITING)
		button_activate_state(C, but, BUTTON_STATE_TEXT_EDITING);
	else if(type == BUTTON_ACTIVATE_APPLY)
		button_activate_state(C, but, BUTTON_STATE_WAIT_FLASH);
}

static void button_activate_exit(bContext *C, uiHandleButtonData *data, uiBut *but, int mousemove, int onfree)
{
	uiBlock *block= but->block;
	uiBut *bt;

	/* ensure we are in the exit state */
	if(data->state != BUTTON_STATE_EXIT)
		button_activate_state(C, but, BUTTON_STATE_EXIT);

	/* apply the button action or value */
	if(!onfree)
		ui_apply_button(C, block, but, data, 0);

	/* if this button is in a menu, this will set the button return
	 * value to the button value and the menu return value to ok, the
	 * menu return value will be picked up and the menu will close */
	if(block->handle && !(block->flag & UI_BLOCK_KEEP_OPEN)) {
		if(!data->cancel || data->escapecancel) {
			uiPopupBlockHandle *menu;

			menu= block->handle;
			menu->butretval= data->retval;
			menu->menuretval= (data->cancel)? UI_RETURN_CANCEL: UI_RETURN_OK;
		}
	}

	if(!onfree && !data->cancel) {
		/* autokey & undo push */
		ui_apply_autokey_undo(C, but);

		/* popup menu memory */
		if(block->flag & UI_BLOCK_POPUP_MEMORY)
			ui_popup_menu_memory(block, but);
	}

	/* disable tooltips until mousemove + last active flag */
	for(block=data->region->uiblocks.first; block; block=block->next) {
		for(bt=block->buttons.first; bt; bt=bt->next)
			bt->flag &= ~UI_BUT_LAST_ACTIVE;

		block->tooltipdisabled= 1;
	}

	ui_blocks_set_tooltips(data->region, 0);

	/* clean up */
	if(data->str)
		MEM_freeN(data->str);
	if(data->origstr)
		MEM_freeN(data->origstr);

	/* redraw (data is but->active!) */
	ED_region_tag_redraw(data->region);
	
	/* clean up button */
	MEM_freeN(but->active);
	but->active= NULL;
	but->flag &= ~(UI_ACTIVE|UI_SELECT);
	but->flag |= UI_BUT_LAST_ACTIVE;
	if(!onfree)
		ui_check_but(but);

	/* adds empty mousemove in queue for re-init handler, in case mouse is
	 * still over a button. we cannot just check for this ourselfs because
	 * at this point the mouse may be over a button in another region */
	if(mousemove)
		WM_event_add_mousemove(C);
}

void ui_button_active_free(const bContext *C, uiBut *but)
{
	uiHandleButtonData *data;

	/* this gets called when the button somehow disappears while it is still
	 * active, this is bad for user interaction, but we need to handle this
	 * case cleanly anyway in case it happens */
	if(but->active) {
		data= but->active;
		data->cancel= 1;
		button_activate_exit((bContext*)C, data, but, 0, 1);
	}
}

/************** handle activating a button *************/

static uiBut *uit_but_find_open_event(ARegion *ar, wmEvent *event)
{
	uiBlock *block;
	uiBut *but;
	
	for(block=ar->uiblocks.first; block; block=block->next) {
		for(but=block->buttons.first; but; but= but->next)
			if(but==event->customdata)
				return but;
	}
	return NULL;
}

static int ui_handle_button_over(bContext *C, wmEvent *event, ARegion *ar)
{
	wmWindow *win= CTX_wm_window(C);
	uiBut *but;

	if(event->type == MOUSEMOVE) {
		but= ui_but_find_mouse_over(win, ar, event->x, event->y);
		if(but)
			button_activate_init(C, ar, but, BUTTON_ACTIVATE_OVER);
	}
	else if(event->type == EVT_BUT_OPEN) {
		but= uit_but_find_open_event(ar, event);
		if(but) {
			button_activate_init(C, ar, but, BUTTON_ACTIVATE_OVER);
			ui_do_button(C, but->block, but, event);
		}
	}

	return WM_UI_HANDLER_CONTINUE;
}

/* exported to interface.c: uiButActiveOnly() */
void ui_button_activate_do(bContext *C, ARegion *ar, uiBut *but)
{
	wmWindow *win= CTX_wm_window(C);
	wmEvent event;
	
	button_activate_init(C, ar, but, BUTTON_ACTIVATE_OVER);
	
	event= *(win->eventstate);	/* XXX huh huh? make api call */
	event.type= EVT_BUT_OPEN;
	event.val= KM_PRESS;
	event.customdata= but;
	event.customdatafree= FALSE;
	
	ui_do_button(C, but->block, but, &event);
}

static void ui_handle_button_activate(bContext *C, ARegion *ar, uiBut *but, uiButtonActivateType type)
{
	uiBut *oldbut;
	uiHandleButtonData *data;

	oldbut= ui_but_find_activated(ar);
	if(oldbut) {
		data= oldbut->active;
		data->cancel= 1;
		button_activate_exit(C, data, oldbut, 0, 0);
	}

	button_activate_init(C, ar, but, type);
}

/************ handle events for an activated button ***********/

static int ui_handle_button_event(bContext *C, wmEvent *event, uiBut *but)
{
	uiHandleButtonData *data;
	uiBlock *block;
	ARegion *ar;
	uiBut *postbut;
	uiButtonActivateType posttype;
	int retval;

	data= but->active;
	block= but->block;
	ar= data->region;

	retval= WM_UI_HANDLER_CONTINUE;
	
	if(data->state == BUTTON_STATE_HIGHLIGHT) {
		switch(event->type) {
			case WINDEACTIVATE:
			case EVT_BUT_CANCEL:
				data->cancel= 1;
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				retval= WM_UI_HANDLER_CONTINUE;
				break;
			case MOUSEMOVE:
				/* verify if we are still over the button, if not exit */
				if(!ui_mouse_inside_button(ar, but, event->x, event->y)) {
					data->cancel= 1;
					button_activate_state(C, but, BUTTON_STATE_EXIT);
				}
				else if(ui_but_find_mouse_over(data->window, ar, event->x, event->y) != but) {
					data->cancel= 1;
					button_activate_state(C, but, BUTTON_STATE_EXIT);
				}
				else if(event->x!=event->prevx || event->y!=event->prevy) {
					/* re-enable tooltip on mouse move */
					ui_blocks_set_tooltips(ar, 1);
					button_tooltip_timer_reset(C, but);
				}

				break;
			case TIMER: {
				/* handle tooltip timer */
				if(event->customdata == data->tooltiptimer) {
					WM_event_remove_timer(data->wm, data->window, data->tooltiptimer);
					data->tooltiptimer= NULL;

					if(!data->tooltip)
						data->tooltip= ui_tooltip_create(C, data->region, but);
				}
				/* handle menu auto open timer */
				else if(event->customdata == data->autoopentimer) {
					WM_event_remove_timer(data->wm, data->window, data->autoopentimer);
					data->autoopentimer= NULL;

					if(ui_mouse_inside_button(ar, but, event->x, event->y))
						button_activate_state(C, but, BUTTON_STATE_MENU_OPEN);
				}

				retval= WM_UI_HANDLER_CONTINUE;
				break;
			case WHEELUPMOUSE:
			case WHEELDOWNMOUSE:
			case MIDDLEMOUSE:
				/* XXX hardcoded keymap check... but anyway, while view changes, tooltips should be removed */
				if(data->tooltiptimer) {
					WM_event_remove_timer(data->wm, data->window, data->tooltiptimer);
					data->tooltiptimer= NULL;
				}
				/* pass on purposedly */
			default:
				/* handle button type specific events */
				retval= ui_do_button(C, block, but, event);
			}
		}
	}
	else if(data->state == BUTTON_STATE_WAIT_RELEASE) {
		switch(event->type) {
			case WINDEACTIVATE:
				data->cancel= 1;
				button_activate_state(C, but, BUTTON_STATE_EXIT);
				break;

			case MOUSEMOVE:
				if(ELEM(but->type,LINK, INLINK)) {
					but->flag |= UI_SELECT;
					ui_do_button(C, block, but, event);
					ED_region_tag_redraw(data->region);
				}
				else {
					/* deselect the button when moving the mouse away */
					if(ui_mouse_inside_button(ar, but, event->x, event->y)) {
						if(!(but->flag & UI_SELECT)) {
							but->flag |= UI_SELECT;
							data->cancel= 0;
							ED_region_tag_redraw(data->region);
						}
					}
					else {
						if(but->flag & UI_SELECT) {
							but->flag &= ~UI_SELECT;
							data->cancel= 1;
							ED_region_tag_redraw(data->region);
						}
					}
				}				
				break;
			default:
				/* otherwise catch mouse release event */
				ui_do_button(C, block, but, event);
				break;
		}

		retval= WM_UI_HANDLER_BREAK;
	}
	else if(data->state == BUTTON_STATE_WAIT_FLASH) {
		switch(event->type) {
			case TIMER: {
				if(event->customdata == data->flashtimer)
					button_activate_state(C, but, BUTTON_STATE_EXIT);
			}
		}

		retval= WM_UI_HANDLER_CONTINUE;
	}
	else if(data->state == BUTTON_STATE_MENU_OPEN) {
		switch(event->type) {
			case MOUSEMOVE: {
				uiBut *bt= ui_but_find_mouse_over(data->window, ar, event->x, event->y);

				if(bt && bt->active != data) {
					if(but->type != COL) /* exception */
						data->cancel= 1;
					button_activate_state(C, but, BUTTON_STATE_EXIT);
				}
				break;
			}
		}

		ui_do_button(C, block, but, event);
		retval= WM_UI_HANDLER_CONTINUE;
	}
	else {
		retval= ui_do_button(C, block, but, event);
		// retval= WM_UI_HANDLER_BREAK; XXX why ? 
	}

	if(data->state == BUTTON_STATE_EXIT) {
		postbut= data->postbut;
		posttype= data->posttype;

		button_activate_exit(C, data, but, (postbut == NULL), 0);

		/* for jumping to the next button with tab while text editing */
		if(postbut)
			button_activate_init(C, ar, postbut, posttype);
	}

	return retval;
}

static int ui_handle_list_event(bContext *C, wmEvent *event, ARegion *ar)
{
	wmWindow *win= CTX_wm_window(C);
	uiBut *but= ui_list_find_mouse_over(win, ar, event->x, event->y);
	int retval= WM_UI_HANDLER_CONTINUE;
	int value, min, max;

	if(but && (event->val == KM_PRESS)) {
		Panel *pa= but->block->panel;

		if(ELEM(event->type, UPARROWKEY, DOWNARROWKEY) ||
		   ((ELEM(event->type, WHEELUPMOUSE, WHEELDOWNMOUSE) && event->alt))) {
			/* activate up/down the list */
			value= RNA_property_int_get(&but->rnapoin, but->rnaprop);

			if(ELEM(event->type, UPARROWKEY, WHEELUPMOUSE))
				value--;
			else
				value++;

			if(value < pa->list_scroll)
				pa->list_scroll= value;
			else if(value >= pa->list_scroll+pa->list_size)
				pa->list_scroll= value - pa->list_size + 1;

			RNA_property_int_range(&but->rnapoin, but->rnaprop, &min, &max);
			value= CLAMPIS(value, min, max);

			RNA_property_int_set(&but->rnapoin, but->rnaprop, value);
			RNA_property_update(C, &but->rnapoin, but->rnaprop);
			ED_region_tag_redraw(ar);

			retval= WM_UI_HANDLER_BREAK;
		}
		else if(ELEM(event->type, WHEELUPMOUSE, WHEELDOWNMOUSE) && event->shift) {
			/* silly replacement for proper grip */
			if(pa->list_grip_size == 0)
				pa->list_grip_size= pa->list_size;

			if(event->type == WHEELUPMOUSE)
				pa->list_grip_size--;
			else
				pa->list_grip_size++;

			pa->list_grip_size= MAX2(pa->list_grip_size, 1);

			ED_region_tag_redraw(ar);

			retval= WM_UI_HANDLER_BREAK;
		}
		else if(ELEM(event->type, WHEELUPMOUSE, WHEELDOWNMOUSE)) {
			/* list template will clamp */
			if(event->type == WHEELUPMOUSE)
				pa->list_scroll--;
			else
				pa->list_scroll++;

			ED_region_tag_redraw(ar);

			retval= WM_UI_HANDLER_BREAK;
		}
	}

	return retval;
}

static void ui_handle_button_return_submenu(bContext *C, wmEvent *event, uiBut *but)
{
	uiHandleButtonData *data;
	uiPopupBlockHandle *menu;

	data= but->active;
	menu= data->menu;

	/* copy over return values from the closing menu */
	if(menu->menuretval == UI_RETURN_OK || menu->menuretval == UI_RETURN_UPDATE) {
		if(but->type == COL)
			VECCOPY(data->vec, menu->retvec)
		else if(ELEM3(but->type, MENU, ICONROW, ICONTEXTROW))
			data->value= menu->retvalue;
	}

	if(menu->menuretval == UI_RETURN_UPDATE) {
		if(data->interactive) ui_apply_button(C, but->block, but, data, 1);
		else ui_check_but(but);

		menu->menuretval= 0;
	}
	
	/* now change button state or exit, which will close the submenu */
	if(ELEM(menu->menuretval, UI_RETURN_OK, UI_RETURN_CANCEL)) {
		if(menu->menuretval != UI_RETURN_OK)
			data->cancel= 1;

		button_activate_exit(C, data, but, 1, 0);
	}
	else if(menu->menuretval == UI_RETURN_OUT) {
		if(event->type==MOUSEMOVE && ui_mouse_inside_button(data->region, but, event->x, event->y)) {
			button_activate_state(C, but, BUTTON_STATE_HIGHLIGHT);
		}
		else {
			if (ISKEYBOARD(event->type)) {
				/* keyboard menu hierarchy navigation, going back to previous level */
				but->active->used_mouse= 0;
				button_activate_state(C, but, BUTTON_STATE_HIGHLIGHT);
			}
			else {
				data->cancel= 1;
				button_activate_exit(C, data, but, 1, 0);
			}
		}
	}
}

/* ************************* menu handling *******************************/

/* function used to prevent loosing the open menu when using nested pulldowns,
 * when moving mouse towards the pulldown menu over other buttons that could
 * steal the highlight from the current button, only checks:
 *
 * - while mouse moves in triangular area defined old mouse position and
 *   left/right side of new menu
 * - only for 1 second
 */

static void ui_mouse_motion_towards_init(uiPopupBlockHandle *menu, int mx, int my, int force)
{
	if(!menu->dotowards || force) {
		menu->dotowards= 1;
		menu->towardsx= mx;
		menu->towardsy= my;

		if(force)
			menu->towardstime= DBL_MAX; /* unlimited time */
		else
			menu->towardstime= PIL_check_seconds_timer();
	}
}

static int ui_mouse_motion_towards_check(uiBlock *block, uiPopupBlockHandle *menu, int mx, int my)
{
	float p1[2], p2[2], p3[2], p4[2], oldp[2], newp[2];
	int closer;

	if(!menu->dotowards) return 0;
	if((block->direction & UI_TOP) || (block->direction & UI_DOWN)) {
		menu->dotowards= 0;
		return menu->dotowards;
	}

	/* verify that we are moving towards one of the edges of the
	 * menu block, in other words, in the triangle formed by the
	 * initial mouse location and two edge points. */
	p1[0]= block->minx-20;
	p1[1]= block->miny-20;

	p2[0]= block->maxx+20;
	p2[1]= block->miny-20;
	
	p3[0]= block->maxx+20;
	p3[1]= block->maxy+20;

	p4[0]= block->minx-20;
	p4[1]= block->maxy+20;

	oldp[0]= menu->towardsx;
	oldp[1]= menu->towardsy;

	newp[0]= mx;
	newp[1]= my;

	if(len_v2v2(oldp, newp) < 4.0f)
		return menu->dotowards;

	closer= 0;
	closer |= isect_point_tri_v2(newp, oldp, p1, p2);
	closer |= isect_point_tri_v2(newp, oldp, p2, p3);
	closer |= isect_point_tri_v2(newp, oldp, p3, p4);
	closer |= isect_point_tri_v2(newp, oldp, p4, p1);

	if(!closer)
		menu->dotowards= 0;

	/* 1 second timer */
	if(PIL_check_seconds_timer() - menu->towardstime > BUTTON_MOUSE_TOWARDS_THRESH)
		menu->dotowards= 0;

	return menu->dotowards;
}

int ui_handle_menu_event(bContext *C, wmEvent *event, uiPopupBlockHandle *menu, int topmenu)
{
	ARegion *ar;
	uiBlock *block;
	uiBut *but, *bt;
	int inside, act, count, mx, my, retval;

	ar= menu->region;
	block= ar->uiblocks.first;
	
	act= 0;
	retval= WM_UI_HANDLER_CONTINUE;

	mx= event->x;
	my= event->y;
	ui_window_to_block(ar, block, &mx, &my);

	/* check if mouse is inside block */
	inside= 0;
	if(block->minx <= mx && block->maxx >= mx)
		if(block->miny <= my && block->maxy >= my)
			inside= 1;

	/* if there's an active modal button, don't check events or outside, except for search menu */
	but= ui_but_find_activated(ar);
	if(but && button_modal_state(but->active->state) && but->type!=SEARCH_MENU) {
		/* if a button is activated modal, always reset the start mouse
		 * position of the towards mechanism to avoid loosing focus,
		 * and don't handle events */
		ui_mouse_motion_towards_init(menu, mx, my, 1);
	}
	else if(event->type != TIMER) {
		/* for ui_mouse_motion_towards_block */
		if(event->type == MOUSEMOVE)
			ui_mouse_motion_towards_init(menu, mx, my, 0);

		/* first block own event func */
		if(block->block_event_func && block->block_event_func(C, block, event));
		/* events not for active search menu button */
		else if(but==NULL || but->type!=SEARCH_MENU) {
			switch(event->type) {
				/* closing sublevels of pulldowns */
				case LEFTARROWKEY:
					if(event->val==KM_PRESS && (block->flag & UI_BLOCK_LOOP))
						if(BLI_countlist(&block->saferct) > 0)
							menu->menuretval= UI_RETURN_OUT;

					retval= WM_UI_HANDLER_BREAK;
					break;

				/* opening sublevels of pulldowns */
				case RIGHTARROWKEY:	
					if(event->val==KM_PRESS && (block->flag & UI_BLOCK_LOOP)) {
						but= ui_but_find_activated(ar);

						if(!but) {
							/* no item active, we make first active */
							if(block->direction & UI_TOP) but= ui_but_last(block);
							else but= ui_but_first(block);
						}

						if(but && ELEM(but->type, BLOCK, PULLDOWN))
							ui_handle_button_activate(C, ar, but, BUTTON_ACTIVATE_OPEN);
					}

					retval= WM_UI_HANDLER_BREAK;
					break;
				
				case UPARROWKEY:
				case DOWNARROWKEY:
				case WHEELUPMOUSE:
				case WHEELDOWNMOUSE:
					/* arrowkeys: only handle for block_loop blocks */
					if(event->alt || event->shift || event->ctrl || event->oskey);
					else if(inside || (block->flag & UI_BLOCK_LOOP)) {
						if(event->val==KM_PRESS) {
							but= ui_but_find_activated(ar);
							if(but) {
								if(ELEM(event->type, DOWNARROWKEY, WHEELDOWNMOUSE)) 
									but= ui_but_next(but);
								else
									but= ui_but_prev(but);

								if(but)
									ui_handle_button_activate(C, ar, but, BUTTON_ACTIVATE);
							}

							if(!but) {
								if(ELEM(event->type, UPARROWKEY, WHEELUPMOUSE))
									bt= ui_but_last(block);
								else
									bt= ui_but_first(block);

								if(bt)
									ui_handle_button_activate(C, ar, bt, BUTTON_ACTIVATE);
							}
						}

						retval= WM_UI_HANDLER_BREAK;
					}

					break;

				case ONEKEY: 	case PAD1: 
					act= 1;
				case TWOKEY: 	case PAD2: 
					if(act==0) act= 2;
				case THREEKEY: 	case PAD3: 
					if(act==0) act= 3;
				case FOURKEY: 	case PAD4: 
					if(act==0) act= 4;
				case FIVEKEY: 	case PAD5: 
					if(act==0) act= 5;
				case SIXKEY: 	case PAD6: 
					if(act==0) act= 6;
				case SEVENKEY: 	case PAD7: 
					if(act==0) act= 7;
				case EIGHTKEY: 	case PAD8: 
					if(act==0) act= 8;
				case NINEKEY: 	case PAD9: 
					if(act==0) act= 9;
				case ZEROKEY: 	case PAD0: 
					if(act==0) act= 10;
				
					if((block->flag & UI_BLOCK_NUMSELECT) && event->val==KM_PRESS) {
						if(event->alt) act+= 10;
						
						count= 0;
						for(but= block->buttons.first; but; but= but->next) {
							int doit= 0;
							
							if(but->type!=LABEL && but->type!=SEPR)
								count++;
							
							/* exception for rna layer buts */
							if(but->rnapoin.data && but->rnaprop) {
								if (ELEM(RNA_property_subtype(but->rnaprop), PROP_LAYER, PROP_LAYER_MEMBER)) {
									if (but->rnaindex== act-1)
										doit=1;
								}
							}
							/* exception for menus like layer buts, with button aligning they're not drawn in order */
							else if(but->type==TOGR) {
								if(but->bitnr==act-1)
									doit= 1;
							}
							else if(count==act)
								doit=1;
							
							if(doit) {
								ui_handle_button_activate(C, ar, but, BUTTON_ACTIVATE_APPLY);
								break;
							}
						}

						retval= WM_UI_HANDLER_BREAK;
					}

					break;
			}
		}
		
		/* here we check return conditions for menus */
		if(block->flag & UI_BLOCK_LOOP) {
			/* if we click outside the block, verify if we clicked on the
			 * button that opened us, otherwise we need to close */
			if(inside==0) {
				uiSafetyRct *saferct= block->saferct.first;

				if(ELEM3(event->type, LEFTMOUSE, MIDDLEMOUSE, RIGHTMOUSE) && event->val==KM_PRESS) {
					if(saferct && !BLI_in_rctf(&saferct->parent, event->x, event->y)) {
						if(block->flag & (UI_BLOCK_OUT_1|UI_BLOCK_KEEP_OPEN))
							menu->menuretval= UI_RETURN_OK;
						else
							menu->menuretval= UI_RETURN_OUT;
					}
				}
			}

			if(menu->menuretval);
			else if(event->type==ESCKEY && event->val==KM_PRESS) {
				/* esc cancels this and all preceding menus */
				menu->menuretval= UI_RETURN_CANCEL;
			}
			else if(ELEM(event->type, RETKEY, PADENTER) && event->val==KM_PRESS) {
				/* enter will always close this block, but we let the event
				 * get handled by the button if it is activated */
				if(!ui_but_find_activated(ar))
					menu->menuretval= UI_RETURN_OK;
			}
			else {
				ui_mouse_motion_towards_check(block, menu, mx, my);

				/* check mouse moving outside of the menu */
				if(inside==0 && (block->flag & UI_BLOCK_MOVEMOUSE_QUIT)) {
					uiSafetyRct *saferct;
					
					/* check for all parent rects, enables arrowkeys to be used */
					for(saferct=block->saferct.first; saferct; saferct= saferct->next) {
						/* for mouse move we only check our own rect, for other
						 * events we check all preceding block rects too to make
						 * arrow keys navigation work */
						if(event->type!=MOUSEMOVE || saferct==block->saferct.first) {
							if(BLI_in_rctf(&saferct->parent, (float)event->x, (float)event->y))
								break;
							if(BLI_in_rctf(&saferct->safety, (float)event->x, (float)event->y))
								break;
						}
					}

					/* strict check, and include the parent rect */
					if(!menu->dotowards && !saferct) {
						if(block->flag & (UI_BLOCK_OUT_1|UI_BLOCK_KEEP_OPEN))
							menu->menuretval= UI_RETURN_OK;
						else
							menu->menuretval= UI_RETURN_OUT;
					}
					else if(menu->dotowards && event->type==MOUSEMOVE)
						retval= WM_UI_HANDLER_BREAK;
				}
			}
		}
	}

	/* if we are didn't handle the event yet, lets pass it on to
	 * buttons inside this region. disabled inside check .. not sure
	 * anymore why it was there? but it meant enter didn't work
	 * for example when mouse was not over submenu */
	if((/*inside &&*/ (!menu->menuretval || menu->menuretval == UI_RETURN_UPDATE) && retval == WM_UI_HANDLER_CONTINUE) || event->type == TIMER) {
		but= ui_but_find_activated(ar);

		if(but) {
			ScrArea *ctx_area= CTX_wm_area(C);
			ARegion *ctx_region= CTX_wm_region(C);
			
			if(menu->ctx_area) CTX_wm_area_set(C, menu->ctx_area);
			if(menu->ctx_region) CTX_wm_region_set(C, menu->ctx_region);
			
			retval= ui_handle_button_event(C, event, but);
			
			if(menu->ctx_area) CTX_wm_area_set(C, ctx_area);
			if(menu->ctx_region) CTX_wm_region_set(C, ctx_region);
		}
		else
			retval= ui_handle_button_over(C, event, ar);
	}

	/* if we set a menu return value, ensure we continue passing this on to
	 * lower menus and buttons, so always set continue then, and if we are
	 * inside the region otherwise, ensure we swallow the event */
	if(menu->menuretval)
		return WM_UI_HANDLER_CONTINUE;
	else if(inside)
		return WM_UI_HANDLER_BREAK;
	else
		return retval;
}

static int ui_handle_menu_return_submenu(bContext *C, wmEvent *event, uiPopupBlockHandle *menu)
{
	ARegion *ar;
	uiBut *but;
	uiBlock *block;
	uiHandleButtonData *data;
	uiPopupBlockHandle *submenu;
	int mx, my, update;

	ar= menu->region;
	block= ar->uiblocks.first;

	but= ui_but_find_activated(ar);
	data= but->active;
	submenu= data->menu;

	if(submenu->menuretval) {
		/* first decide if we want to close our own menu cascading, if
		 * so pass on the sub menu return value to our own menu handle */
		if(ELEM(submenu->menuretval, UI_RETURN_OK, UI_RETURN_CANCEL)) {
			if(!(block->flag & UI_BLOCK_KEEP_OPEN)) {
				menu->menuretval= submenu->menuretval;
				menu->butretval= data->retval;
			}
		}

		update= (submenu->menuretval == UI_RETURN_UPDATE);

		/* now let activated button in this menu exit, which
		 * will actually close the submenu too */
		ui_handle_button_return_submenu(C, event, but);

		if(update)
			submenu->menuretval = 0;
	}

	/* for cases where close does not cascade, allow the user to
	 * move the mouse back towards the menu without closing */
	mx= event->x;
	my= event->y;
	ui_window_to_block(ar, block, &mx, &my);
	ui_mouse_motion_towards_init(menu, mx, my, 1);

	if(menu->menuretval)
		return WM_UI_HANDLER_CONTINUE;
	else
		return WM_UI_HANDLER_BREAK;
}

static int ui_handle_menus_recursive(bContext *C, wmEvent *event, uiPopupBlockHandle *menu)
{
	uiBut *but;
	uiHandleButtonData *data;
	uiPopupBlockHandle *submenu;
	int retval= WM_UI_HANDLER_CONTINUE;

	/* check if we have a submenu, and handle events for it first */
	but= ui_but_find_activated(menu->region);
	data= (but)? but->active: NULL;
	submenu= (data)? data->menu: NULL;

	if(submenu)
		retval= ui_handle_menus_recursive(C, event, submenu);

	/* now handle events for our own menu */
	if(retval == WM_UI_HANDLER_CONTINUE || event->type == TIMER) {
		if(submenu && submenu->menuretval)
			retval= ui_handle_menu_return_submenu(C, event, menu);
		else
			retval= ui_handle_menu_event(C, event, menu, (submenu == NULL));
	}

	return retval;
}

/* *************** UI event handlers **************** */

static int ui_handler_region(bContext *C, wmEvent *event, void *userdata)
{
	ARegion *ar;
	uiBut *but;
	int retval;

	/* here we handle buttons at the region level, non-modal */
	ar= CTX_wm_region(C);
	retval= WM_UI_HANDLER_CONTINUE;

	if(ar==NULL) return retval;
	if(ar->uiblocks.first==NULL) return retval;

	/* either handle events for already activated button or try to activate */
	but= ui_but_find_activated(ar);

	retval= ui_handler_panel_region(C, event);

	if(retval == WM_UI_HANDLER_CONTINUE)
		retval= ui_handle_list_event(C, event, ar);

	if(retval == WM_UI_HANDLER_CONTINUE) {
		if(but)
			retval= ui_handle_button_event(C, event, but);
		else
			retval= ui_handle_button_over(C, event, ar);
	}

	/* re-enable tooltips */
	if(event->type == MOUSEMOVE && (event->x!=event->prevx || event->y!=event->prevy))
		ui_blocks_set_tooltips(ar, 1);
	
	/* delayed apply callbacks */
	ui_apply_but_funcs_after(C);

	return retval;
}

static void ui_handler_remove_region(bContext *C, void *userdata)
{
	bScreen *sc;
	ARegion *ar;

	ar= CTX_wm_region(C);
	if(ar == NULL) return;

	uiFreeBlocks(C, &ar->uiblocks);
	
	sc= CTX_wm_screen(C);
	if(sc == NULL) return;

	/* delayed apply callbacks, but not for screen level regions, those
	 * we rather do at the very end after closing them all, which will
	 * be done in ui_handler_region/window */
	if(BLI_findindex(&sc->regionbase, ar) == -1)
		ui_apply_but_funcs_after(C);
}

static int ui_handler_region_menu(bContext *C, wmEvent *event, void *userdata)
{
	ARegion *ar;
	uiBut *but;
	uiHandleButtonData *data;
	int retval;

	/* here we handle buttons at the window level, modal, for example
	 * while number sliding, text editing, or when a menu block is open */
	ar= CTX_wm_menu(C);
	if(!ar)
		ar= CTX_wm_region(C);

	but= ui_but_find_activated(ar);

	if(but) {
		/* handle activated button events */
		data= but->active;

		if(data->state == BUTTON_STATE_MENU_OPEN) {
			/* handle events for menus and their buttons recursively,
			 * this will handle events from the top to the bottom menu */
			retval= ui_handle_menus_recursive(C, event, data->menu);

			/* handle events for the activated button */
			if(retval == WM_UI_HANDLER_CONTINUE || event->type == TIMER) {
				if(data->menu->menuretval)
					ui_handle_button_return_submenu(C, event, but);
				else
					ui_handle_button_event(C, event, but);
			}
		}
		else {
			/* handle events for the activated button */
			ui_handle_button_event(C, event, but);
		}
	}

	/* re-enable tooltips */
	if(event->type == MOUSEMOVE && (event->x!=event->prevx || event->y!=event->prevy))
		ui_blocks_set_tooltips(ar, 1);

	/* delayed apply callbacks */
	ui_apply_but_funcs_after(C);

	/* we block all events, this is modal interaction */
	return WM_UI_HANDLER_BREAK;
}

/* two types of popups, one with operator + enum, other with regular callbacks */
static int ui_handler_popup(bContext *C, wmEvent *event, void *userdata)
{
	uiPopupBlockHandle *menu= userdata;

	ui_handle_menus_recursive(C, event, menu);

	/* free if done, does not free handle itself */
	if(menu->menuretval) {
		/* copy values, we have to free first (closes region) */
		uiPopupBlockHandle temp= *menu;
		
		ui_popup_block_free(C, menu);
		UI_remove_popup_handlers(&CTX_wm_window(C)->modalhandlers, menu);

		if(temp.menuretval == UI_RETURN_OK) {
			if(temp.popup_func)
				temp.popup_func(C, temp.popup_arg, temp.retvalue);
			if(temp.optype)
				WM_operator_name_call(C, temp.optype->idname, temp.opcontext, NULL);
		}
		else if(temp.cancel_func)
			temp.cancel_func(temp.popup_arg);
	}
	else {
		/* re-enable tooltips */
		if(event->type == MOUSEMOVE && (event->x!=event->prevx || event->y!=event->prevy))
			ui_blocks_set_tooltips(menu->region, 1);
	}

	/* delayed apply callbacks */
	ui_apply_but_funcs_after(C);

	/* we block all events, this is modal interaction */
	return WM_UI_HANDLER_BREAK;
}

static void ui_handler_remove_popup(bContext *C, void *userdata)
{
	uiPopupBlockHandle *menu= userdata;

	/* free menu block if window is closed for some reason */
	ui_popup_block_free(C, menu);

	/* delayed apply callbacks */
	ui_apply_but_funcs_after(C);
}

void UI_add_region_handlers(ListBase *handlers)
{
	WM_event_remove_ui_handler(handlers, ui_handler_region, ui_handler_remove_region, NULL);
	WM_event_add_ui_handler(NULL, handlers, ui_handler_region, ui_handler_remove_region, NULL);
}

void UI_add_popup_handlers(bContext *C, ListBase *handlers, uiPopupBlockHandle *popup)
{
	WM_event_add_ui_handler(C, handlers, ui_handler_popup, ui_handler_remove_popup, popup);
}

void UI_remove_popup_handlers(ListBase *handlers, uiPopupBlockHandle *popup)
{
	WM_event_remove_ui_handler(handlers, ui_handler_popup, ui_handler_remove_popup, popup);
}