source/blender/editors/space_node/node_select.c

   1 /**
   2  * $Id:
   3  *
   4  * ***** BEGIN GPL LICENSE BLOCK *****
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  19  *
  20  * The Original Code is Copyright (C) 2008 Blender Foundation.
  21  * All rights reserved.
  22  *
  23  *
  24  * Contributor(s): Blender Foundation, Nathan Letwory
  25  *
  26  * ***** END GPL LICENSE BLOCK *****
  27  */
  28
  29 #include <stdio.h>
  30
  31 #include "DNA_node_types.h"
  32 #include "DNA_scene_types.h"
  33 #include "DNA_screen_types.h"
  34 #include "DNA_space_types.h"
  35
  36 #include "BKE_context.h"
  37 #include "BKE_node.h"
  38 #include "BKE_global.h"
  39
  40 #include "BLI_rect.h"
  41
  42 #include "ED_space_api.h"
  43 #include "ED_screen.h"
  44 #include "ED_types.h"
  45
  46 #include "RNA_access.h"
  47 #include "RNA_define.h"
  48
  49 #include "WM_api.h"
  50 #include "WM_types.h"
  51
  52 #include "UI_view2d.h"
  53
  54 #include "node_intern.h"
  55
  56 /* ************************** Node generic ************** */
  57
  58 /* allows to walk the list in order of visibility */
  59 static bNode *next_node(bNodeTree *ntree)
  60 {
  61         static bNode *current=NULL, *last= NULL;
  62
  63         if(ntree) {
  64                 /* set current to the first selected node */
  65                 for(current= ntree->nodes.last; current; current= current->prev)
  66                         if(current->flag & NODE_SELECT)
  67                                 break;
  68
  69                 /* set last to the first unselected node */
  70                 for(last= ntree->nodes.last; last; last= last->prev)
  71                         if((last->flag & NODE_SELECT)==0)
  72                                 break;
  73
  74                 if(current==NULL)
  75                         current= last;
  76
  77                 return NULL;
  78         }
  79         /* no nodes, or we are ready */
  80         if(current==NULL)
  81                 return NULL;
  82
  83         /* now we walk the list backwards, but we always return current */
  84         if(current->flag & NODE_SELECT) {
  85                 bNode *node= current;
  86
  87                 /* find previous selected */
  88                 current= current->prev;
  89                 while(current && (current->flag & NODE_SELECT)==0)
  90                         current= current->prev;
  91
  92                 /* find first unselected */
  93                 if(current==NULL)
  94                         current= last;
  95
  96                 return node;
  97         }
  98         else {
  99                 bNode *node= current;
 100
 101                 /* find previous unselected */
 102                 current= current->prev;
 103                 while(current && (current->flag & NODE_SELECT))
 104                         current= current->prev;
 105
 106                 return node;
 107         }
 108
 109         return NULL;
 110 }
 111
 112 static int do_header_node(SpaceNode *snode, bNode *node, float mx, float my)
 113 {
 114         rctf totr= node->totr;
 115
 116         totr.ymin= totr.ymax-20.0f;
 117
 118         totr.xmax= totr.xmin+15.0f;
 119         if(BLI_in_rctf(&totr, mx, my)) {
 120                 node->flag |= NODE_HIDDEN;
 121                 // allqueue(REDRAWNODE, 0);
 122                 return 1;
 123         }
 124
 125         totr.xmax= node->totr.xmax;
 126         totr.xmin= totr.xmax-18.0f;
 127         if(node->typeinfo->flag & NODE_PREVIEW) {
 128                 if(BLI_in_rctf(&totr, mx, my)) {
 129                         node->flag ^= NODE_PREVIEW;
 130                         // allqueue(REDRAWNODE, 0);
 131                         return 1;
 132                 }
 133                 totr.xmin-=18.0f;
 134         }
 135         if(node->type == NODE_GROUP) {
 136                 if(BLI_in_rctf(&totr, mx, my)) {
 137                         snode_make_group_editable(snode, node);
 138                         return 1;
 139                 }
 140                 totr.xmin-=18.0f;
 141         }
 142         if(node->typeinfo->flag & NODE_OPTIONS) {
 143                 if(BLI_in_rctf(&totr, mx, my)) {
 144                         node->flag ^= NODE_OPTIONS;
 145                         // allqueue(REDRAWNODE, 0);
 146                         return 1;
 147                 }
 148                 totr.xmin-=18.0f;
 149         }
 150         /* hide unused sockets */
 151         if(BLI_in_rctf(&totr, mx, my)) {
 152                 // XXX node_hide_unhide_sockets(snode, node);
 153         }
 154
 155
 156         totr= node->totr;
 157         totr.xmin= totr.xmax-10.0f;
 158         totr.ymax= totr.ymin+10.0f;
 159         if(BLI_in_rctf(&totr, mx, my)) {
 160                 // XXX scale_node(snode, node);
 161                 return 1;
 162         }
 163         return 0;
 164 }
 165
 166 static int do_header_hidden_node(SpaceNode *snode, bNode *node, float mx, float my)
 167 {
 168         rctf totr= node->totr;
 169
 170         totr.xmax= totr.xmin+15.0f;
 171         if(BLI_in_rctf(&totr, mx, my)) {
 172                 node->flag &= ~NODE_HIDDEN;
 173                 // allqueue(REDRAWNODE, 0);
 174                 return 1;
 175         }
 176
 177         totr.xmax= node->totr.xmax;
 178         totr.xmin= node->totr.xmax-15.0f;
 179         if(BLI_in_rctf(&totr, mx, my)) {
 180                 scale_node(snode, node);
 181                 return 1;
 182         }
 183         return 0;
 184 }
 185
 186 static void node_mouse_select(SpaceNode *snode, ARegion *ar, short *mval)
 187 {
 188         bNode *node;
 189         float mx, my;
 190
 191         mx= (float)mval[0];
 192         my= (float)mval[1];
 193
 194         UI_view2d_region_to_view(&ar->v2d, mval[0], mval[1], &mx, &my);
 195
 196         for(next_node(snode->edittree); (node=next_node(NULL));) {
 197
 198                 /* first check for the headers or scaling widget */
 199                 /* XXX if(node->flag & NODE_HIDDEN) {
 200                         if(do_header_hidden_node(snode, node, mx, my))
 201                                 return 1;
 202                 }
 203                 else {
 204                         if(do_header_node(snode, node, mx, my))
 205                                 return 1;
 206                 }*/
 207
 208                 /* node body */
 209                 if(BLI_in_rctf(&node->totr, mx, my))
 210                         break;
 211         }
 212         if(node) {
 213                 // XXX if((G.qual & LR_SHIFTKEY)==0)
 214                 //      node_deselectall(snode, 0);
 215
 216                 // XXX
 217                 /*
 218                 if(G.qual & LR_SHIFTKEY) {
 219                         if(node->flag & SELECT)
 220                                 node->flag &= ~SELECT;
 221                         else
 222                                 node->flag |= SELECT;
 223                 }
 224                 else */
 225                         node->flag |= SELECT;
 226
 227                 node_set_active(snode, node);
 228
 229                 /* viewer linking */
 230                 //if(G.qual & LR_CTRLKEY)
 231                 //      node_link_viewer(snode, node);
 232
 233                 /* not so nice (no event), but function below delays redraw otherwise */
 234                 //force_draw(0);
 235
 236                 //std_rmouse_transform(node_transform_ext);     /* does undo push for select */
 237                 ED_region_tag_redraw(ar);
 238         }
 239 }
 240
 241 static int node_select_exec(bContext *C, wmOperator *op)
 242 {
 243         SpaceNode *snode= (SpaceNode*)CTX_wm_space_data(C);
 244         ARegion *ar= CTX_wm_region(C);
 245         int select_type;
 246         short mval[2];
 247
 248         select_type = RNA_enum_get(op->ptr, "select_type");
 249
 250         switch (select_type) {
 251                 case NODE_SELECT_MOUSE:
 252                         mval[0] = RNA_int_get(op->ptr, "mx");
 253                         mval[1] = RNA_int_get(op->ptr, "my");
 254                         node_mouse_select(snode, ar, mval);
 255                         break;
 256         }
 257         return OPERATOR_FINISHED;
 258 }
 259
 260 static int node_select_invoke(bContext *C, wmOperator *op, wmEvent *event)
 261 {
 262         ARegion *ar= CTX_wm_region(C);
 263         short mval[2];
 264
 265         mval[0]= event->x - ar->winrct.xmin;
 266         mval[1]= event->y - ar->winrct.ymin;
 267
 268         RNA_int_set(op->ptr, "mx", mval[0]);
 269         RNA_int_set(op->ptr, "my", mval[1]);
 270
 271         return node_select_exec(C,op);
 272 }
 273
 274 /* operators */
 275
 276 static EnumPropertyItem prop_select_items[] = {
 277         {NODE_SELECT_MOUSE, "NORMAL", "Normal Select", "Select using the mouse"},
 278         {0, NULL, NULL, NULL}};
 279
 280 void NODE_OT_select(wmOperatorType *ot)
 281 {
 282         PropertyRNA *prop;
 283
 284         /* identifiers */
 285         ot->name= "Activate/Select";
 286         ot->idname= "NODE_OT_select";
 287
 288         /* api callbacks */
 289         ot->invoke= node_select_invoke;
 290         ot->poll= ED_operator_node_active;
 291
 292         prop = RNA_def_property(ot->srna, "select_type", PROP_ENUM, PROP_NONE);
 293         RNA_def_property_enum_items(prop, prop_select_items);
 294
 295         prop = RNA_def_property(ot->srna, "mx", PROP_INT, PROP_NONE);
 296         prop = RNA_def_property(ot->srna, "my", PROP_INT, PROP_NONE);
 297 }