diff options
Diffstat (limited to 'source/blender/editors/gpencil/gpencil_undo.c')
| -rw-r--r-- | source/blender/editors/gpencil/gpencil_undo.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/source/blender/editors/gpencil/gpencil_undo.c b/source/blender/editors/gpencil/gpencil_undo.c new file mode 100644 index 00000000000..1154975e3cc --- /dev/null +++ b/source/blender/editors/gpencil/gpencil_undo.c @@ -0,0 +1,168 @@ +/* + * $Id$ + * + * ***** 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2011 Blender Foundation. + * All rights reserved. + * + * + * Contributor(s): Blender Foundation, + * Sergey Sharybin + * + * ***** END GPL LICENSE BLOCK ***** + */ + +#include <stdlib.h> +#include <string.h> + +#include "MEM_guardedalloc.h" + +#include "DNA_gpencil_types.h" +#include "DNA_listBase.h" +#include "DNA_windowmanager_types.h" + +#include "BKE_context.h" +#include "BKE_gpencil.h" + +#include "BLI_listbase.h" + +#include "ED_gpencil.h" + +#include "WM_api.h" +#include "WM_types.h" + +#include "gpencil_intern.h" + +#define MAXUNDONAME 64 + +typedef struct bGPundonode { + struct bGPundonode *next, *prev; + + char name[MAXUNDONAME]; + struct bGPdata *gpd; +} bGPundonode; + +static ListBase undo_nodes = {NULL, NULL}; +static bGPundonode *cur_node = NULL; + +int ED_gpencil_session_active(void) +{ + return undo_nodes.first != NULL; +} + +int ED_undo_gpencil_step(bContext *C, int step, const char *name) +{ + bGPdata **gpd_ptr= NULL, *new_gpd= NULL; + + gpd_ptr= gpencil_data_get_pointers(C, NULL); + + if(step==1) { /* undo */ + //printf("\t\tGP - undo step\n"); + if(cur_node->prev) { + if(!name || strcmp(cur_node->name, name) == 0) { + cur_node= cur_node->prev; + new_gpd= cur_node->gpd; + } + } + } + else if (step==-1) { + //printf("\t\tGP - redo step\n"); + if(cur_node->next) { + if(!name || strcmp(cur_node->name, name) == 0) { + cur_node= cur_node->next; + new_gpd= cur_node->gpd; + } + } + } + + if(new_gpd) { + if(gpd_ptr) { + if(*gpd_ptr) { + bGPdata *gpd= *gpd_ptr; + bGPDlayer *gpl, *gpld; + + free_gpencil_layers(&gpd->layers); + + /* copy layers */ + gpd->layers.first= gpd->layers.last= NULL; + + for (gpl= new_gpd->layers.first; gpl; gpl= gpl->next) { + /* make a copy of source layer and its data */ + gpld= gpencil_layer_duplicate(gpl); + BLI_addtail(&gpd->layers, gpld); + } + } + } + } + + WM_event_add_notifier(C, NC_SCREEN|ND_GPENCIL|NA_EDITED, NULL); + + return OPERATOR_FINISHED; +} + +void gpencil_undo_init(bGPdata *gpd) +{ + gpencil_undo_push(gpd); +} + +void gpencil_undo_push(bGPdata *gpd) +{ + bGPundonode *undo_node; + + //printf("\t\tGP - undo push\n"); + + if(cur_node) { + /* remove all un-done nodes from stack */ + undo_node= cur_node->next; + + while(undo_node) { + bGPundonode *next_node= undo_node->next; + + free_gpencil_data(undo_node->gpd); + MEM_freeN(undo_node->gpd); + + BLI_freelinkN(&undo_nodes, undo_node); + + undo_node= next_node; + } + } + + /* create new undo node */ + undo_node= MEM_callocN(sizeof(bGPundonode), "gpencil undo node"); + undo_node->gpd= gpencil_data_duplicate(gpd); + + cur_node= undo_node; + + BLI_addtail(&undo_nodes, undo_node); +} + +void gpencil_undo_finish(void) +{ + bGPundonode *undo_node= undo_nodes.first; + + while(undo_node) { + free_gpencil_data(undo_node->gpd); + MEM_freeN(undo_node->gpd); + + undo_node= undo_node->next; + } + + BLI_freelistN(&undo_nodes); + + cur_node= NULL; +} |