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/**
* $Id:
*
* ***** BEGIN GPL/BL DUAL 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. The Blender
* Foundation also sells licenses for use in proprietary software under
* the Blender License. See http://www.blender.org/BL/ for information
* about this.
*
* 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/BL DUAL LICENSE BLOCK *****
*/
#include <stdlib.h>
#include <string.h>
#include <math.h>
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef WIN32
#include "BLI_winstuff.h"
#endif
#include "MEM_guardedalloc.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_screen_types.h"
#include "DNA_scene_types.h"
#include "DNA_userdef_types.h"
#include "BKE_displist.h"
#include "BKE_global.h"
#include "BLI_blenlib.h"
#include "BLI_arithb.h"
#include "BLI_editVert.h"
#include "BLI_dynstr.h"
#include "BKE_utildefines.h"
#include "BIF_editmesh.h"
#include "BIF_interface.h"
#include "BIF_screen.h"
#include "BIF_resources.h"
#include "BIF_toolbox.h"
#include "BIF_space.h"
#include "BDR_editcurve.h"
#include "BSE_edit.h"
#include "mydevice.h"
/* ***************** generic editmode undo system ********************* */
/*
Add this in your local code:
void undo_editmode_push(char *name,
void (*freedata)(void *), // pointer to function freeing data
void (*to_editmode)(void *), // data to editmode conversion
void * (*from_editmode)(void)) // editmode to data conversion
Further exported for UI is:
void undo_editmode_step(int step); // undo and redo
void undo_editmode_clear(void) // free & clear all data
void undo_editmode_menu(void) // history menu
*/
/* ********************************************************************* */
#define MAXUNDONAME 64
typedef struct UndoElem {
struct UndoElem *next, *prev;
Object *ob;
void *undodata;
char name[MAXUNDONAME];
void (*freedata)(void *);
void (*to_editmode)(void *);
void * (*from_editmode)(void);
} UndoElem;
static ListBase undobase={NULL, NULL};
static UndoElem *curundo= NULL;
/* ********************* xtern api calls ************* */
static void undo_restore(UndoElem *undo)
{
if(undo) {
waitcursor(1);
undo->to_editmode(undo->undodata);
waitcursor(0);
countall();
}
}
/* name can be a dynamic string */
void undo_editmode_push(char *name, void (*freedata)(void *),
void (*to_editmode)(void *), void *(*from_editmode)(void))
{
UndoElem *uel;
int nr;
/* prevent two same undocalls */
if(curundo && strcmp("Original", name)==0) {
if(curundo->ob==G.obedit) {
return;
}
}
/* remove all undos after (also when curundo==NULL) */
while(undobase.last != curundo) {
uel= undobase.last;
BLI_remlink(&undobase, uel);
uel->freedata(uel->undodata);
MEM_freeN(uel);
}
/* make new */
curundo= uel= MEM_callocN(sizeof(UndoElem), "undo file");
strncpy(uel->name, name, MAXUNDONAME-1);
BLI_addtail(&undobase, uel);
uel->freedata= freedata;
uel->to_editmode= to_editmode;
uel->from_editmode= from_editmode;
/* and limit amount to the maximum */
nr= 0;
uel= undobase.last;
while(uel) {
nr++;
if(nr==U.undosteps) break;
uel= uel->prev;
}
if(uel) {
while(undobase.first!=uel) {
UndoElem *first= undobase.first;
BLI_remlink(&undobase, first);
uel->freedata(first->undodata);
MEM_freeN(first);
}
}
/* copy */
curundo->undodata= curundo->from_editmode();
curundo->ob= G.obedit;
}
/* helper to remove clean other objects from undo stack */
static void undo_clean_stack(void)
{
UndoElem *uel, *next;
int mixed= 0;
uel= undobase.first;
while(uel) {
next= uel->next;
if(uel->ob!=G.obedit) {
mixed= 1;
BLI_remlink(&undobase, uel);
uel->freedata(uel->undodata);
MEM_freeN(uel);
}
uel= next;
}
if(mixed) curundo= undobase.last;
}
/* 1= an undo, -1 is a redo. we have to make sure 'curundo' remains at current situation */
void undo_editmode_step(int step)
{
/* prevent undo to happen on wrong object, stack can be a mix */
undo_clean_stack();
if(step==0) {
undo_restore(curundo); // if NULL, reloads editmesh
}
else if(step==1) {
if(curundo==NULL || curundo->prev==NULL) error("No more steps to undo");
else {
printf("undo %s\n", curundo->name);
curundo= curundo->prev;
undo_restore(curundo); // if NULL, reloads editmesh
}
}
else {
/* curundo has to remain current situation! */
if(curundo==NULL || curundo->next==NULL) error("No more steps to redo");
else {
undo_restore(curundo->next);
curundo= curundo->next;
printf("redo %s\n", curundo->name);
}
}
makeDispList(G.obedit);
// type specific redraw events...
if(G.obedit->type==OB_CURVE) curve_changes_other_objects(G.obedit);
allqueue(REDRAWVIEW3D, 0);
allqueue(REDRAWBUTSEDIT, 0);
allqueue(REDRAWIMAGE, 0);
}
void undo_editmode_clear(void)
{
UndoElem *uel;
uel= undobase.first;
while(uel) {
uel->freedata(uel->undodata);
uel= uel->next;
}
BLI_freelistN(&undobase);
curundo= NULL;
}
/* based on index nr it does a restore */
static void undo_number(int nr)
{
UndoElem *uel;
int a=1;
for(uel= undobase.first; uel; uel= uel->next, a++) {
if(a==nr) break;
}
curundo= uel;
undo_editmode_step(0);
}
/* ************** for interaction with menu/pullown */
void undo_editmode_menu(void)
{
UndoElem *uel;
DynStr *ds= BLI_dynstr_new();
short event;
char *menu;
undo_clean_stack(); // removes other objects from it
BLI_dynstr_append(ds, "Undo History %t");
for(uel= undobase.first; uel; uel= uel->next) {
BLI_dynstr_append(ds, "|");
BLI_dynstr_append(ds, uel->name);
}
menu= BLI_dynstr_get_cstring(ds);
BLI_dynstr_free(ds);
event= pupmenu_col(menu, 20);
MEM_freeN(menu);
if(event>0) undo_number(event);
}
static void do_editmode_undohistorymenu(void *arg, int event)
{
if(G.obedit==NULL || event<1) return;
if (event==1) {
if(G.obedit->type==OB_MESH) remake_editMesh();
}
else undo_number(event-1);
allqueue(REDRAWVIEW3D, 0);
}
uiBlock *editmode_undohistorymenu(void *arg_unused)
{
uiBlock *block;
UndoElem *uel;
short yco = 20, menuwidth = 120;
short item=2;
block= uiNewBlock(&curarea->uiblocks, "view3d_edit_mesh_undohistorymenu", UI_EMBOSSP, UI_HELV, G.curscreen->mainwin);
uiBlockSetButmFunc(block, do_editmode_undohistorymenu, NULL);
uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, "Undo All Changes|Ctrl U", 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, 1, "");
for(uel= undobase.first; uel; uel= uel->next, item++) {
if (uel==curundo) uiDefBut(block, SEPR, 0, "", 0, yco-=6, menuwidth, 6, NULL, 0.0, 0.0, 0, 0, "");
uiDefIconTextBut(block, BUTM, 1, ICON_BLANK1, uel->name, 0, yco-=20, menuwidth, 19, NULL, 0.0, 0.0, 1, (float)item, "");
}
uiBlockSetDirection(block, UI_RIGHT);
uiTextBoundsBlock(block, 60);
return block;
}
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