Port of part of the Interface code to 2.50.

This is based on the current trunk version, so these files should not need
merges. There's two things (clipboard and intptr_t) that are missing in 2.50
and commented out with XXX 2.48, these can be enabled again once trunk is
merged into this branch.

Further this is not all interface code, there are many parts commented out:
* interface.c: nearly all button types, missing: links, chartab, keyevent.
* interface_draw.c: almost all code, with some small exceptions.
* interface_ops.c: this replaces ui_do_but and uiDoBlocks with two operators,
  making it non-blocking. 
* interface_regions: this is a part of interface.c, split off, contains code to
  create regions for tooltips, menus, pupmenu (that one is crashing currently),
  color chooser, basically regions with buttons which is fairly independent of
  core interface code.
* interface_panel.c and interface_icons.c: not ported over, so no panels and
  icons yet. Panels should probably become (free floating) regions? 
* text.c: (formerly language.c) for drawing text and translation. this works
  but is using bad globals still and could be cleaned up.

Header Files:
* ED_datafiles.h now has declarations for datatoc_ files, so those extern
  declarations can be #included instead of repeated.
* The user interface code is in UI_interface.h and other UI_* files.

Core:
* The API for creating blocks, buttons, etc is nearly the same still. Blocks
  are now created per region instead of per area.
* The code was made non-blocking, which means that any changes and redraws
  should be possible while editing a button. That means though that we need
  some sort of persistence even though the blender model is to recreate buttons
  for each redraw. So when a new block is created, some matching happens to
  find out which buttons correspond to buttons in the previously created block,
  and for activated buttons some data is then copied over to the new button.
* Added UI_init/UI_init_userdef/UI_exit functions that should initialize code
  in this module, instead of multiple function calls in the windowmanager.
* Removed most static/globals from interface.c.
* Removed UIafterfunc_ I don't think it's needed anymore, and not sure how it
  would integrate here?
* Currently only full window redraws are used, this should become per region
  and maybe per button later.

Operators:
* Events are currently handled through two operators: button activate and menu
  handle. Operators may not be the best way to implement this, since there are
  currently some issues with events being missed, but they can become a special
  handler type instead, this should not be a big change.
* The button activate operator runs as long as a button is active, and will
  handle all interaction with that button until the button is not activated
  anymore. This means clicking, text editing, number dragging, opening menu
  blocks, etc.
* Since this operator has to be non-blocking, the ui_do_but code needed to made
  non-blocking. That means variables that were previously on the stack, now
  need to be stored away in a struct such that they can be accessed again when
  the operator receives more events.
* Additionally the place in the ui_do_but code indicated the state, now that
  needs to be set explicit in order to handle the right events in the right
  state. So an activated button can be in one of these states: init, highlight,
  wait_flash, wait_release, wait_key_event, num_editing, text_editing,
  text_selecting, block_open, exit.
* For each button type an ui_apply_but_* function has also been separated out
  from ui_do_but. This makes it possible to continuously apply the button as
  text is being typed for example, and there is an option in the code to enable
  this. Since the code non-blocking and can deal with the button being deleted
  even, it should be safe to do this.
* When editing text, dragging numbers, etc, the actual data (but->poin) is not
  being edited, since that would mean data is being edited without correct
  updates happening, while some other part of blender may be accessing that
  data in the meantime. So data values, strings, vectors are written to a
  temporary location and only flush in the apply function.

Regions:
* Menus, color chooser, tooltips etc all create screen level regions. Such menu
  blocks give a handle to the button that creates it, which will contain the
  results of the menu block once a MESSAGE event is received from that menu
  block.
* For this type of menu block the coordinates used to be in window space. They
  are still created that way and ui_positionblock still works with window
  coordinates, but after that the block and buttons are brought back to region
  coordinates since these are now contained in a region.
* The flush/overdraw frontbuffer drawing code was removed, the windowmanager
  should have enough information with these screen level regions to have full
  control over what gets drawn when and to then do correct compositing.

Testing:
* The header in the time space currently has some buttons to test the UI code.

1 files changed, 350 insertions, 0 deletions

diff --git a/source/blender/editors/include/UI_interface.h b/source/blender/editors/include/UI_interface.h
new file mode 100644
index 00000000000..a4f29e37e34
--- /dev/null
+++ b/source/blender/editors/include/UI_interface.h
@@ -0,0 +1,350 @@
+/**
+ * $Id$
+ *
+ * ***** 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): none yet.
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+#ifndef UI_INTERFACE_H
+#define UI_INTERFACE_H
+
+struct ID;
+struct ListBase;
+struct ARegion;
+struct wmWindow;
+struct wmWindowManager;
+struct AutoComplete;
+struct bContext;
+
+/* uiBlock->dt */
+#define UI_EMBOSS		0	/* use one of the themes for drawing */
+#define UI_EMBOSSN		1	/* Nothing */
+#define UI_EMBOSSM		2	/* Minimal builtin emboss, also for logic buttons */
+#define UI_EMBOSSP		3	/* Pulldown */
+#define UI_EMBOSSR		4	/* Rounded */
+#define UI_EMBOSST		5	/* Table */
+
+#define UI_EMBOSSX		0	/* for a python file, which i can't change.... duh! */
+
+/* uiBlock->direction */
+#define UI_TOP		1
+#define UI_DOWN		2
+#define UI_LEFT		4
+#define UI_RIGHT	8
+#define UI_DIRECTION	15
+#define UI_CENTER		16
+#define UI_SHIFT_FLIPPED	32
+
+/* uiBlock->autofill */
+#define UI_BLOCK_COLLUMNS	1
+#define UI_BLOCK_ROWS		2
+
+/* uiBlock->flag (controls) */
+#define UI_BLOCK_LOOP			1
+#define UI_BLOCK_REDRAW			2
+#define UI_BLOCK_RET_1			4		/* XXX 2.5 not implemented */
+#define UI_BLOCK_NUMSELECT		8
+#define UI_BLOCK_ENTER_OK		16
+#define UI_BLOCK_NOSHADOW		32
+#define UI_BLOCK_NO_HILITE		64		/* XXX 2.5 not implemented */
+#define UI_BLOCK_MOVEMOUSE_QUIT	128
+#define UI_BLOCK_KEEP_OPEN		256
+
+/* uiMenuBlockHandle->blockretval */
+#define UI_RETURN_CANCEL	1       /* cancel all menus cascading */
+#define UI_RETURN_OK        2       /* choice made */
+#define UI_RETURN_OUT       4       /* left the menu */
+
+	/* block->flag bits 12-15 are identical to but->flag bits */
+
+/* block->font, for now: bold = medium+1 */
+#define UI_HELV			0
+#define UI_HELVB		1
+
+/* panel controls */
+#define UI_PNL_TRANSP	1
+#define UI_PNL_SOLID	2
+
+#define UI_PNL_CLOSE	32
+#define UI_PNL_STOW		64
+#define UI_PNL_TO_MOUSE	128
+#define UI_PNL_UNSTOW	256
+#define UI_PNL_SCALE	512
+
+/* warning the first 4 flags are internal */
+/* but->flag */
+#define UI_TEXT_LEFT	16
+#define UI_ICON_LEFT	32
+#define UI_ICON_RIGHT	64
+	/* control for button type block */
+#define UI_MAKE_TOP		128
+#define UI_MAKE_DOWN	256
+#define UI_MAKE_LEFT	512
+#define UI_MAKE_RIGHT	1024
+	/* dont draw hilite on mouse over */
+#define UI_NO_HILITE	2048
+	/* button align flag, for drawing groups together */
+#define UI_BUT_ALIGN		(15<<12)
+#define UI_BUT_ALIGN_TOP	(1<<12)
+#define UI_BUT_ALIGN_LEFT	(1<<13)
+#define UI_BUT_ALIGN_RIGHT	(1<<14)
+#define UI_BUT_ALIGN_DOWN	(1<<15)
+
+
+/* Button types, bits stored in 1 value... and a short even!
+- bits 0-4:  bitnr (0-31)
+- bits 5-7:  pointer type
+- bit  8:    for 'bit'
+- bit  9-15: button type (now 6 bits, 64 types)
+*/
+
+#define CHA	32
+#define SHO	64
+#define INT	96
+#define FLO	128
+#define FUN	192
+#define BIT	256
+
+#define BUTPOIN	(128+64+32)
+
+#define BUT	(1<<9)
+#define ROW	(2<<9)
+#define TOG	(3<<9)
+#define SLI	(4<<9)
+#define	NUM	(5<<9)
+#define TEX	(6<<9)
+#define TOG3	(7<<9)
+#define TOGR	(8<<9)
+#define TOGN	(9<<9)
+#define LABEL	(10<<9)
+#define MENU	(11<<9)
+#define ICONROW	(12<<9)
+#define ICONTOG	(13<<9)
+#define NUMSLI	(14<<9)
+#define COL		(15<<9)
+#define IDPOIN	(16<<9)
+#define HSVSLI 	(17<<9)
+#define SCROLL	(18<<9)
+#define BLOCK	(19<<9)
+#define BUTM	(20<<9)
+#define SEPR	(21<<9)
+#define LINK	(22<<9)
+#define INLINK	(23<<9)
+#define KEYEVT	(24<<9)
+#define ICONTEXTROW (25<<9)
+#define HSVCUBE (26<<9)
+#define PULLDOWN (27<<9)
+#define ROUNDBOX (28<<9)
+#define CHARTAB (29<<9)
+#define BUT_COLORBAND (30<<9)
+#define BUT_NORMAL (31<<9)
+#define BUT_CURVE (32<<9)
+#define BUT_TOGDUAL (33<<9)
+#define ICONTOGN (34<<9)
+#define FTPREVIEW (35<<9)
+#define NUMABS	(36<<9)
+#define BUTTYPE	(63<<9)
+
+/* Menu Block Handle */
+typedef struct uiMenuBlockHandle {
+	struct ARegion *region;
+	int butretval;
+	int blockretval;
+
+	float retvalue;
+	float retvec[3];
+} uiMenuBlockHandle;
+
+typedef struct uiBut uiBut;
+typedef struct uiBlock uiBlock;
+
+void uiEmboss(float x1, float y1, float x2, float y2, int sel);
+void uiRoundBoxEmboss(float minx, float miny, float maxx, float maxy, float rad, int active);
+void uiRoundBox(float minx, float miny, float maxx, float maxy, float rad);
+void uiSetRoundBox(int type);
+void uiRoundRect(float minx, float miny, float maxx, float maxy, float rad);
+
+void uiDrawMenuBox(float minx, float miny, float maxx, float maxy, short flag);
+void uiTextBoundsBlock(uiBlock *block, int addval);
+void uiBoundsBlock(struct uiBlock *block, int addval);
+void uiDrawBlock(struct uiBlock *block);
+void uiGetMouse(int win, short *adr);
+void uiComposeLinks(uiBlock *block);
+void uiSetButLock(int val, char *lockstr);
+uiBut *uiFindInlink(uiBlock *block, void *poin);
+void uiClearButLock(void);
+int uiDoBlocks(struct ListBase *lb, int event, int movemouse_quit);
+void uiSetCurFont(uiBlock *block, int index);
+void uiDefFont(unsigned int index, void *xl, void *large, void *medium, void *small);
+void uiFreeBlock(uiBlock *block);
+void uiFreeBlocks(struct ListBase *lb);
+uiBlock *uiBeginBlock(struct wmWindow *window, struct ARegion *region, char *name, short dt, short font);
+void uiEndBlock(uiBlock *block);
+uiBlock *uiGetBlock(char *name, struct ARegion *ar);
+
+void uiBlockPickerButtons(struct uiBlock *block, float *col, float *hsv, float *old, char *hexcol, char mode, short retval);
+
+
+/* automatic aligning, horiz or verical */
+void uiBlockBeginAlign(uiBlock *block);
+void uiBlockEndAlign(uiBlock *block);
+
+uiBut *uiDefBut(uiBlock *block, 
+					   int type, int retval, char *str, 
+					   short x1, short y1, 
+					   short x2, short y2, 
+					   void *poin, 
+					   float min, float max, 
+					   float a1, float a2,  char *tip);
+uiBut *uiDefButF(uiBlock *block, int type, int retval, char *str, short x1, short y1, short x2, short y2, float *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButBitF(uiBlock *block, int type, int bit, int retval, char *str, short x1, short y1, short x2, short y2, float *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButI(uiBlock *block, int type, int retval, char *str, short x1, short y1, short x2, short y2, int *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButBitI(uiBlock *block, int type, int bit, int retval, char *str, short x1, short y1, short x2, short y2, int *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButS(uiBlock *block, int type, int retval, char *str, short x1, short y1, short x2, short y2, short *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButBitS(uiBlock *block, int type, int bit, int retval, char *str, short x1, short y1, short x2, short y2, short *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButC(uiBlock *block, int type, int retval, char *str, short x1, short y1, short x2, short y2, char *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefButBitC(uiBlock *block, int type, int bit, int retval, char *str, short x1, short y1, short x2, short y2, char *poin, float min, float max, float a1, float a2,  char *tip);
+
+uiBut *uiDefIconBut(uiBlock *block, 
+					   int type, int retval, int icon, 
+					   short x1, short y1, 
+					   short x2, short y2, 
+					   void *poin, 
+					   float min, float max, 
+					   float a1, float a2,  char *tip);
+uiBut *uiDefIconButF(uiBlock *block, int type, int retval, int icon, short x1, short y1, short x2, short y2, float *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButBitF(uiBlock *block, int type, int bit, int retval, int icon, short x1, short y1, short x2, short y2, float *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButI(uiBlock *block, int type, int retval, int icon, short x1, short y1, short x2, short y2, int *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButBitI(uiBlock *block, int type, int bit, int retval, int icon, short x1, short y1, short x2, short y2, int *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButS(uiBlock *block, int type, int retval, int icon, short x1, short y1, short x2, short y2, short *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButBitS(uiBlock *block, int type, int bit, int retval, int icon, short x1, short y1, short x2, short y2, short *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButC(uiBlock *block, int type, int retval, int icon, short x1, short y1, short x2, short y2, char *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconButBitC(uiBlock *block, int type, int bit, int retval, int icon, short x1, short y1, short x2, short y2, char *poin, float min, float max, float a1, float a2,  char *tip);
+
+uiBut *uiDefIconTextBut(uiBlock *block, int type, int retval, int icon, char *str, short x1, short y1, short x2, short y2, void *poin, float min, float max, float a1, float a2,  char *tip);
+
+uiBut *uiDefIconTextButF(uiBlock *block, int type, int retval, int icon, char *str, short x1, short y1, short x2, short y2, float *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButBitF(uiBlock *block, int type, int bit, int retval, int icon, char *str, short x1, short y1, short x2, short y2, float *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButI(uiBlock *block, int type, int retval, int icon, char *str, short x1, short y1, short x2, short y2, int *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButBitI(uiBlock *block, int type, int bit, int retval, int icon, char *str, short x1, short y1, short x2, short y2, int *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButS(uiBlock *block, int type, int retval, int icon, char *str, short x1, short y1, short x2, short y2, short *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButBitS(uiBlock *block, int type, int bit, int retval, int icon, char *str, short x1, short y1, short x2, short y2, short *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButC(uiBlock *block, int type, int retval, int icon, char *str, short x1, short y1, short x2, short y2, char *poin, float min, float max, float a1, float a2,  char *tip);
+uiBut *uiDefIconTextButBitC(uiBlock *block, int type, int bit, int retval, int icon, char *str, short x1, short y1, short x2, short y2, char *poin, float min, float max, float a1, float a2,  char *tip);
+
+typedef void		(*uiIDPoinFuncFP)	(char *str, struct ID **idpp);
+uiBut *uiDefIDPoinBut(struct uiBlock *block, uiIDPoinFuncFP func, short blocktype, int retval, char *str,
+						short x1, short y1, short x2, short y2, void *idpp, char *tip);
+
+typedef uiBlock* (*uiBlockFuncFP)	(struct wmWindow *window, struct uiMenuBlockHandle *handle, void *arg1);
+uiBut *uiDefBlockBut(uiBlock *block, uiBlockFuncFP func, void *func_arg1, char *str, short x1, short y1, short x2, short y2, char *tip);
+uiBut *uiDefPulldownBut(uiBlock *block, uiBlockFuncFP func, void *func_arg1, char *str, short x1, short y1, short x2, short y2, char *tip);
+
+uiBut *uiDefIconTextBlockBut(uiBlock *block, uiBlockFuncFP func, void *arg, int icon, char *str, short x1, short y1, short x2, short y2, char *tip);
+uiBut *uiDefIconBlockBut(uiBlock *block, uiBlockFuncFP func, void *arg, int retval, int icon, short x1, short y1, short x2, short y2, char *tip);
+
+void uiDefKeyevtButS(uiBlock *block, int retval, char *str, short x1, short y1, short x2, short y2, short *spoin, char *tip);
+
+struct PointerRNA;
+struct PropertyRNA;
+uiBut *uiDefRNABut(uiBlock *block, int retval, struct PointerRNA *ptr, struct PropertyRNA *prop, int index, short x1, short y1, short x2, short y2);
+void uiButSetFunc3(uiBut *but, void (*func)(void *arg1, void *arg2, void *arg3), void *arg1, void *arg2, void *arg3);
+
+void uiAutoBlock(struct uiBlock *block, 
+				 float minx, float miny, 
+				 float sizex, float sizey, int flag);
+void uiSetButLink(struct uiBut *but, 
+				  void **poin, 
+				  void ***ppoin, 
+				  short *tot, 
+				  int from, int to);
+
+int		uiBlocksGetYMin		(ListBase *lb);
+int		uiBlockGetCol		(uiBlock *block);
+void*	uiBlockGetCurFont	(uiBlock *block);
+
+void	uiBlockSetCol		(uiBlock *block, int col);
+void	uiBlockSetEmboss	(uiBlock *block, int emboss);
+void	uiBlockSetDirection	(uiBlock *block, int direction);
+void 	uiBlockFlipOrder	(uiBlock *block);
+void	uiBlockSetFlag		(uiBlock *block, int flag);
+void	uiBlockSetXOfs		(uiBlock *block, int xofs);
+
+int		uiButGetRetVal		(uiBut *but);
+
+void	uiButSetFlag		(uiBut *but, int flag);
+void	uiButClearFlag		(uiBut *but, int flag);
+
+void	uiBlockSetButmFunc	(uiBlock *block,	void (*butmfunc)(void *arg, int but_a2), void *arg);
+
+void	uiBlockSetFunc		(uiBlock *block,	void (*func)(void *arg1, void *arg2), void *arg1, void *arg2);
+void	uiButSetFunc		(uiBut *but,		void (*func)(void *arg1, void *arg2), void *arg1, void *arg2);
+
+void	uiButSetCompleteFunc(uiBut *but,		void (*func)(char *str, void *arg), void *arg);
+
+void 	uiBlockSetDrawExtraFunc(uiBlock *block, void (*func)(struct ScrArea *sa, uiBlock *block));
+
+
+extern void pupmenu_set_active(int val);
+extern uiMenuBlockHandle *pupmenu_col(struct bContext *C, char *instr, int mx, int my, int maxrow);
+extern uiMenuBlockHandle *pupmenu(struct bContext *C, char *instr, int mx, int my);
+extern void pupmenu_free(struct bContext *C, uiMenuBlockHandle *handle);
+
+extern void uiFreePanels(struct ListBase *lb);
+extern void uiNewPanelTabbed(char *, char *);
+extern int uiNewPanel(struct ScrArea *sa, struct uiBlock *block, char *panelname, char *tabname, int ofsx, int ofsy, int sizex, int sizey);
+	
+extern void uiSetPanel_view2d(struct ScrArea *sa);
+extern void uiMatchPanel_view2d(struct ScrArea *sa);
+
+extern void uiDrawBlocksPanels(struct ScrArea *sa, int re_align);
+extern void uiNewPanelHeight(struct uiBlock *block, int sizey);
+extern void uiNewPanelTitle(struct uiBlock *block, char *str);
+extern void uiPanelPush(struct uiBlock *block);
+extern void uiPanelPop(struct uiBlock *block);
+extern uiBlock *uiFindOpenPanelBlockName(ListBase *lb, char *name);
+extern int uiAlignPanelStep(struct ScrArea *sa, float fac);
+extern void uiPanelControl(int);
+extern void uiSetPanelHandler(int);
+
+extern void uiDrawBoxShadow(unsigned char alpha, float minx, float miny, float maxx, float maxy);
+extern void *uiSetCurFont_ext(float aspect);
+
+typedef struct AutoComplete AutoComplete;
+
+AutoComplete *autocomplete_begin(char *startname, int maxlen);
+void autocomplete_do_name(AutoComplete *autocpl, const char *name);
+void autocomplete_end(AutoComplete *autocpl, char *autoname);
+
+void uiTestRegion(const struct bContext *C); /* XXX 2.50 temporary test */
+
+void UI_keymap(struct wmWindowManager *wm);
+
+void UI_init(void);
+void UI_init_userdef(void);
+void UI_exit(void);
+
+#endif /*  UI_INTERFACE_H */
+