source/blender/src/drawnode.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) 2005 Blender Foundation.
  21  * All rights reserved.
  22  *
  23  * The Original Code is: all of this file.
  24  *
  25  * Contributor(s): none yet.
  26  *
  27  * ***** END GPL LICENSE BLOCK *****
  28  */
  29
  30 #include <math.h>
  31 #include <stdio.h>
  32 #include <string.h>
  33
  34 #include "BLI_blenlib.h"
  35 #include "BLI_arithb.h"
  36
  37 #include "DNA_action_types.h"
  38 #include "DNA_ipo_types.h"
  39 #include "DNA_ID.h"
  40 #include "DNA_material_types.h"
  41 #include "DNA_node_types.h"
  42 #include "DNA_object_types.h"
  43 #include "DNA_scene_types.h"
  44 #include "DNA_space_types.h"
  45 #include "DNA_screen_types.h"
  46 #include "DNA_texture_types.h"
  47 #include "DNA_userdef_types.h"
  48
  49 #include "BKE_global.h"
  50 #include "BKE_image.h"
  51 #include "BKE_library.h"
  52 #include "BKE_main.h"
  53 #include "BKE_material.h"
  54 #include "BKE_node.h"
  55 #include "BKE_object.h"
  56 #include "BKE_texture.h"
  57 #include "BKE_utildefines.h"
  58
  59 #include "BIF_gl.h"
  60 #include "BIF_glutil.h"
  61 #include "BIF_interface.h"
  62 #include "BIF_interface_icons.h"
  63 #include "BIF_language.h"
  64 #include "BIF_mywindow.h"
  65 #include "BIF_previewrender.h"
  66 #include "BIF_resources.h"
  67 #include "BIF_screen.h"
  68 #include "BIF_space.h"
  69
  70 #include "BSE_drawipo.h"
  71 #include "BSE_node.h"
  72 #include "BSE_view.h"
  73
  74 #include "BMF_Api.h"
  75
  76 #include "MEM_guardedalloc.h"
  77
  78 #include "RE_pipeline.h"
  79
  80 #include "blendef.h"
  81 #include "butspace.h"
  82 #include "interface.h"  /* urm...  for rasterpos_safe, roundbox */
  83 #include "mydevice.h"
  84
  85
  86
  87 static void snode_drawstring(SpaceNode *snode, char *str, int okwidth)
  88 {
  89         char drawstr[NODE_MAXSTR];
  90         int width;
  91
  92         if(str[0]==0 || okwidth<4) return;
  93
  94         BLI_strncpy(drawstr, str, NODE_MAXSTR);
  95         width= snode->aspect*BIF_GetStringWidth(snode->curfont, drawstr, 0);
  96
  97         if(width > okwidth) {
  98                 int len= strlen(drawstr)-1;
  99
 100                 while(width > okwidth && len>=0) {
 101                         drawstr[len]= 0;
 102
 103                         width= snode->aspect*BIF_GetStringWidth(snode->curfont, drawstr, 0);
 104                         len--;
 105                 }
 106                 if(len==0) return;
 107         }
 108         BIF_DrawString(snode->curfont, drawstr, 0);
 109
 110 }
 111
 112 /* **************  Socket callbacks *********** */
 113
 114 /* NOTE: this is a block-menu, needs 0 events, otherwise the menu closes */
 115 static uiBlock *socket_vector_menu(void *butpoin_v)
 116 {
 117         float *butpoin= butpoin_v;
 118         uiBlock *block;
 119
 120         block= uiNewBlock(&curarea->uiblocks, "socket menu", UI_EMBOSS, UI_HELV, curarea->win);
 121
 122         /* use this for a fake extra empy space around the buttons */
 123         uiDefBut(block, LABEL, 0, "",                   -4, -4, 188, 68, NULL, 0, 0, 0, 0, "");
 124
 125         uiBlockBeginAlign(block);
 126         uiDefButF(block, NUMSLI, 0, "X ",        0,40,180,20, butpoin, -1.0, 1.0, 10, 0, "");
 127         uiDefButF(block, NUMSLI, 0, "Y ",        0,20,180,20, butpoin+1, -1.0, 1.0, 10, 0, "");
 128         uiDefButF(block, NUMSLI, 0, "Z ",        0,0,180,20, butpoin+2, -1.0, 1.0, 10, 0, "");
 129
 130         uiBlockSetDirection(block, UI_TOP);
 131
 132         allqueue(REDRAWNODE, 0);
 133
 134         return block;
 135 }
 136
 137 static void node_sync_cb(void *snode_v, void *node_v)
 138 {
 139         SpaceNode *snode= snode_v;
 140
 141         if(snode->treetype==NTREE_SHADER) {
 142                 nodeShaderSynchronizeID(node_v, 1);
 143                 allqueue(REDRAWBUTSSHADING, 0);
 144         }
 145 }
 146
 147 /* ****************** GENERAL CALLBACKS FOR NODES ***************** */
 148
 149 static void node_ID_title_cb(void *node_v, void *unused_v)
 150 {
 151         bNode *node= node_v;
 152
 153         if(node->id) {
 154                 test_idbutton(node->id->name+2);        /* library.c, verifies unique name */
 155                 BLI_strncpy(node->name, node->id->name+2, 21);
 156
 157                 allqueue(REDRAWBUTSSHADING, 0);
 158                 allqueue(REDRAWNODE, 0);
 159                 allqueue(REDRAWOOPS, 0);
 160         }
 161 }
 162
 163
 164 static void node_but_title_cb(void *node_v, void *but_v)
 165 {
 166         bNode *node= node_v;
 167         uiBut *bt= but_v;
 168         BLI_strncpy(node->name, bt->drawstr, NODE_MAXSTR);
 169
 170         allqueue(REDRAWNODE, 0);
 171 }
 172
 173
 174 /* ****************** BUTTON CALLBACKS FOR ALL TREES ***************** */
 175
 176 static int node_buts_group(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 177 {
 178         if(block && node->id) {
 179                 uiBut *bt;
 180                 short width;
 181
 182                 uiBlockBeginAlign(block);
 183
 184                 /* name button */
 185                 width= (short)(butr->xmax-butr->xmin - (node->id->us>1?19.0f:0.0f));
 186                 bt= uiDefBut(block, TEX, B_NOP, "NT:",
 187                                          butr->xmin, butr->ymin, width, 19,
 188                                          node->id->name+2, 0.0, 19.0, 0, 0, "NodeTree name");
 189                 uiButSetFunc(bt, node_ID_title_cb, node, NULL);
 190
 191                 /* user amount */
 192                 if(node->id->us>1) {
 193                         char str1[32];
 194                         sprintf(str1, "%d", node->id->us);
 195                         bt= uiDefBut(block, BUT, B_NOP, str1,
 196                                                  butr->xmax-19, butr->ymin, 19, 19,
 197                                                  NULL, 0, 0, 0, 0, "Displays number of users. Click to make a single-user copy.");
 198                         //uiButSetFunc(bt, node_mat_alone_cb, node, NULL);
 199                 }
 200
 201                 uiBlockEndAlign(block);
 202         }
 203         return 19;
 204 }
 205
 206 static int node_buts_value(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 207 {
 208         if(block) {
 209                 bNodeSocket *sock= node->outputs.first;         /* first socket stores value */
 210
 211                 uiDefButF(block, NUM, B_NODE_EXEC, "",
 212                                   butr->xmin, butr->ymin, butr->xmax-butr->xmin, 20,
 213                                   sock->ns.vec, 0.0f, 1.0f, 10, 2, "");
 214
 215         }
 216         return 20;
 217 }
 218
 219 static int node_buts_rgb(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 220 {
 221         if(block) {
 222                 bNodeSocket *sock= node->outputs.first;         /* first socket stores value */
 223                 if(sock) {
 224                         /* enforce square box drawing */
 225                         uiBlockSetEmboss(block, UI_EMBOSSP);
 226
 227                         uiDefButF(block, HSVCUBE, B_NODE_EXEC, "",
 228                                           butr->xmin, butr->ymin, butr->xmax-butr->xmin, 12,
 229                                           sock->ns.vec, 0.0f, 1.0f, 3, 0, "");
 230                         uiDefButF(block, HSVCUBE, B_NODE_EXEC, "",
 231                                           butr->xmin, butr->ymin+15, butr->xmax-butr->xmin, butr->ymax-butr->ymin -15 -15,
 232                                           sock->ns.vec, 0.0f, 1.0f, 2, 0, "");
 233                         uiDefButF(block, COL, B_NOP, "",
 234                                           butr->xmin, butr->ymax-12, butr->xmax-butr->xmin, 12,
 235                                           sock->ns.vec, 0.0, 0.0, -1, 0, "");
 236                         /* the -1 above prevents col button to popup a color picker */
 237
 238                         uiBlockSetEmboss(block, UI_EMBOSS);
 239                 }
 240         }
 241         return 30 + (int)(node->width-NODE_DY);
 242 }
 243
 244 static int node_buts_mix_rgb(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 245 {
 246         if(block) {
 247                 uiBut *bt;
 248
 249                 /* blend type */
 250                 bt=uiDefButS(block, MENU, B_NODE_EXEC, "Mix %x0|Add %x1|Subtract %x3|Multiply %x2|Screen %x4|Divide %x5|Difference %x6|Darken %x7|Lighten %x8",
 251                                          butr->xmin, butr->ymin, butr->xmax-butr->xmin, 20,
 252                                          &node->custom1, 0, 0, 0, 0, "");
 253                 uiButSetFunc(bt, node_but_title_cb, node, bt);
 254         }
 255         return 20;
 256 }
 257
 258 static int node_buts_valtorgb(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 259 {
 260         if(block) {
 261                 if(node->storage) {
 262                         draw_colorband_buts_small(block, node->storage, butr, B_NODE_EXEC);
 263                 }
 264         }
 265         return 40;
 266 }
 267
 268 static int node_buts_curvevec(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 269 {
 270         if(block) {
 271                 curvemap_buttons(block, node->storage, 'v', B_NODE_EXEC, B_REDR, butr);
 272         }
 273         return (int)(node->width-NODE_DY);
 274 }
 275
 276 static int node_buts_curvecol(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 277 {
 278         if(block) {
 279                 curvemap_buttons(block, node->storage, 'c', B_NODE_EXEC, B_REDR, butr);
 280         }
 281         return (int)(node->width-NODE_DY);
 282 }
 283
 284 static int node_buts_normal(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 285 {
 286         if(block) {
 287                 bNodeSocket *sock= node->outputs.first;         /* first socket stores normal */
 288
 289                 uiDefButF(block, BUT_NORMAL, B_NODE_EXEC, "",
 290                                   butr->xmin, butr->ymin, butr->xmax-butr->xmin, butr->ymax-butr->ymin,
 291                                   sock->ns.vec, 0.0f, 1.0f, 0, 0, "");
 292
 293         }
 294         return (int)(node->width-NODE_DY);
 295 }
 296
 297
 298
 299 /* ****************** BUTTON CALLBACKS FOR SHADER NODES ***************** */
 300
 301
 302 static void node_mat_alone_cb(void *node_v, void *unused)
 303 {
 304         bNode *node= node_v;
 305
 306         node->id= (ID *)copy_material((Material *)node->id);
 307
 308         BIF_undo_push("Single user material");
 309         allqueue(REDRAWBUTSSHADING, 0);
 310         allqueue(REDRAWNODE, 0);
 311         allqueue(REDRAWOOPS, 0);
 312 }
 313
 314 static void node_browse_mat_cb(void *ntree_v, void *node_v)
 315 {
 316         bNodeTree *ntree= ntree_v;
 317         bNode *node= node_v;
 318
 319         if(node->menunr<1) return;
 320
 321         if(node->menunr==32767) {       /* code for Add New */
 322                 if(node->id) {
 323                         /* make copy, but make sure it doesnt have the node tag nor nodes */
 324                         Material *ma= (Material *)node->id;
 325                         ma->id.us--;
 326                         ma= copy_material(ma);
 327                         ma->use_nodes= 0;
 328                         if(ma->nodetree) {
 329                                 ntreeFreeTree(ma->nodetree);
 330                                 MEM_freeN(ma->nodetree);
 331                         }
 332                         ma->nodetree= NULL;
 333                         node->id= (ID *)ma;
 334                 }
 335                 else node->id= (ID *)add_material("MatNode");
 336         }
 337         else {
 338                 if(node->id) node->id->us--;
 339                 node->id= BLI_findlink(&G.main->mat, node->menunr-1);
 340                 id_us_plus(node->id);
 341         }
 342         BLI_strncpy(node->name, node->id->name+2, 21);
 343
 344         nodeSetActive(ntree, node);
 345
 346         allqueue(REDRAWBUTSSHADING, 0);
 347         allqueue(REDRAWNODE, 0);
 348         BIF_preview_changed(ID_MA);
 349
 350         node->menunr= 0;
 351 }
 352
 353 static void node_new_mat_cb(void *ntree_v, void *node_v)
 354 {
 355         bNodeTree *ntree= ntree_v;
 356         bNode *node= node_v;
 357
 358         node->id= (ID *)add_material("MatNode");
 359         BLI_strncpy(node->name, node->id->name+2, 21);
 360
 361         nodeSetActive(ntree, node);
 362
 363         allqueue(REDRAWBUTSSHADING, 0);
 364         allqueue(REDRAWNODE, 0);
 365         BIF_preview_changed(ID_MA);
 366
 367 }
 368
 369 static void node_texmap_cb(void *texmap_v, void *unused_v)
 370 {
 371         init_mapping(texmap_v);
 372 }
 373
 374 static int node_shader_buts_material(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 375 {
 376         if(block) {
 377                 uiBut *bt;
 378                 short dx= (short)((butr->xmax-butr->xmin)/3.0f), has_us= (node->id && node->id->us>1);
 379                 short dy= (short)butr->ymin;
 380                 char *strp;
 381
 382                 /* WATCH IT: we use this callback in material buttons, but then only want first row */
 383                 if(butr->ymax-butr->ymin > 21.0f) dy+= 19;
 384
 385                 uiBlockBeginAlign(block);
 386                 if(node->id==NULL) uiBlockSetCol(block, TH_REDALERT);
 387                 else if(has_us) uiBlockSetCol(block, TH_BUT_SETTING1);
 388                 else uiBlockSetCol(block, TH_BUT_SETTING2);
 389
 390                 /* browse button */
 391                 IDnames_to_pupstring(&strp, NULL, "ADD NEW %x32767", &(G.main->mat), NULL, NULL);
 392                 node->menunr= 0;
 393                 bt= uiDefButS(block, MENU, B_NOP, strp,
 394                                   butr->xmin, dy, 19, 19,
 395                                   &node->menunr, 0, 0, 0, 0, "Browses existing choices or adds NEW");
 396                 uiButSetFunc(bt, node_browse_mat_cb, ntree, node);
 397                 if(strp) MEM_freeN(strp);
 398
 399                 /* Add New button */
 400                 if(node->id==NULL) {
 401                         bt= uiDefBut(block, BUT, B_NOP, "Add New",
 402                                                  butr->xmin+19, dy, (short)(butr->xmax-butr->xmin-19.0f), 19,
 403                                                  NULL, 0.0, 0.0, 0, 0, "Add new Material");
 404                         uiButSetFunc(bt, node_new_mat_cb, ntree, node);
 405                         uiBlockSetCol(block, TH_AUTO);
 406                 }
 407                 else {
 408                         /* name button */
 409                         short width= (short)(butr->xmax-butr->xmin-19.0f - (has_us?19.0f:0.0f));
 410                         bt= uiDefBut(block, TEX, B_NOP, "MA:",
 411                                                   butr->xmin+19, dy, width, 19,
 412                                                   node->id->name+2, 0.0, 19.0, 0, 0, "Material name");
 413                         uiButSetFunc(bt, node_ID_title_cb, node, NULL);
 414
 415                         /* user amount */
 416                         if(has_us) {
 417                                 char str1[32];
 418                                 sprintf(str1, "%d", node->id->us);
 419                                 bt= uiDefBut(block, BUT, B_NOP, str1,
 420                                                           butr->xmax-19, dy, 19, 19,
 421                                                           NULL, 0, 0, 0, 0, "Displays number of users. Click to make a single-user copy.");
 422                                 uiButSetFunc(bt, node_mat_alone_cb, node, NULL);
 423                         }
 424
 425                         /* WATCH IT: we use this callback in material buttons, but then only want first row */
 426                         if(butr->ymax-butr->ymin > 21.0f) {
 427                                 /* node options */
 428                                 uiBlockSetCol(block, TH_AUTO);
 429                                 uiDefButBitS(block, TOG, SH_NODE_MAT_DIFF, B_NODE_EXEC, "Diff",
 430                                                          butr->xmin, butr->ymin, dx, 19,
 431                                                          &node->custom1, 0, 0, 0, 0, "Material Node outputs Diffuse");
 432                                 uiDefButBitS(block, TOG, SH_NODE_MAT_SPEC, B_NODE_EXEC, "Spec",
 433                                                          butr->xmin+dx, butr->ymin, dx, 19,
 434                                                          &node->custom1, 0, 0, 0, 0, "Material Node outputs Specular");
 435                                 uiDefButBitS(block, TOG, SH_NODE_MAT_NEG, B_NODE_EXEC, "Neg Normal",
 436                                                          butr->xmax-dx, butr->ymin, dx, 19,
 437                                                          &node->custom1, 0, 0, 0, 0, "Material Node uses inverted Normal");
 438                         }
 439                 }
 440                 uiBlockEndAlign(block);
 441         }
 442         return 38;
 443 }
 444
 445 static int node_shader_buts_texture(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 446 {
 447         if(block) {
 448                 uiBut *bt;
 449
 450                 bt= uiDefIDPoinBut(block, test_texpoin_but, ID_TE, B_NODE_EXEC, "",
 451                                                    butr->xmin, butr->ymin, butr->xmax-butr->xmin, 19,
 452                                                    &node->id,  "");
 453                 uiButSetFunc(bt, node_ID_title_cb, node, NULL);
 454
 455         }
 456         return 19;
 457 }
 458
 459
 460 static int node_shader_buts_mapping(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 461 {
 462         if(block) {
 463                 TexMapping *texmap= node->storage;
 464                 short dx= (short)((butr->xmax-butr->xmin)/7.0f);
 465                 short dy= (short)(butr->ymax-19);
 466
 467                 uiBlockSetFunc(block, node_texmap_cb, texmap, NULL);    /* all buttons get this */
 468
 469                 uiBlockBeginAlign(block);
 470                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+dx, dy, 2*dx, 19, texmap->loc, -1000.0f, 1000.0f, 10, 2, "");
 471                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+3*dx, dy, 2*dx, 19, texmap->loc+1, -1000.0f, 1000.0f, 10, 2, "");
 472                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+5*dx, dy, 2*dx, 19, texmap->loc+2, -1000.0f, 1000.0f, 10, 2, "");
 473                 dy-= 19;
 474                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+dx, dy, 2*dx, 19, texmap->rot, -1000.0f, 1000.0f, 1000, 1, "");
 475                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+3*dx, dy, 2*dx, 19, texmap->rot+1, -1000.0f, 1000.0f, 1000, 1, "");
 476                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+5*dx, dy, 2*dx, 19, texmap->rot+2, -1000.0f, 1000.0f, 1000, 1, "");
 477                 dy-= 19;
 478                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+dx, dy, 2*dx, 19, texmap->size, -1000.0f, 1000.0f, 10, 2, "");
 479                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+3*dx, dy, 2*dx, 19, texmap->size+1, -1000.0f, 1000.0f, 10, 2, "");
 480                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+5*dx, dy, 2*dx, 19, texmap->size+2, -1000.0f, 1000.0f, 10, 2, "");
 481                 dy-= 25;
 482                 uiBlockBeginAlign(block);
 483                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+dx, dy, 2*dx, 19, texmap->min, -10.0f, 10.0f, 100, 2, "");
 484                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+3*dx, dy, 2*dx, 19, texmap->min+1, -10.0f, 10.0f, 100, 2, "");
 485                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+5*dx, dy, 2*dx, 19, texmap->min+2, -10.0f, 10.0f, 100, 2, "");
 486                 dy-= 19;
 487                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+dx, dy, 2*dx, 19, texmap->max, -10.0f, 10.0f, 10, 2, "");
 488                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+3*dx, dy, 2*dx, 19, texmap->max+1, -10.0f, 10.0f, 10, 2, "");
 489                 uiDefButF(block, NUM, B_NODE_EXEC, "", butr->xmin+5*dx, dy, 2*dx, 19, texmap->max+2, -10.0f, 10.0f, 10, 2, "");
 490                 uiBlockEndAlign(block);
 491
 492                 /* labels/options */
 493
 494                 dy= (short)(butr->ymax-19);
 495                 uiDefBut(block, LABEL, B_NOP, "Loc", butr->xmin, dy, dx, 19, NULL, 0.0f, 0.0f, 0, 0, "");
 496                 dy-= 19;
 497                 uiDefBut(block, LABEL, B_NOP, "Rot", butr->xmin, dy, dx, 19, NULL, 0.0f, 0.0f, 0, 0, "");
 498                 dy-= 19;
 499                 uiDefBut(block, LABEL, B_NOP, "Size", butr->xmin, dy, dx, 19, NULL, 0.0f, 0.0f, 0, 0, "");
 500                 dy-= 25;
 501                 uiDefButBitI(block, TOG, TEXMAP_CLIP_MIN, B_NODE_EXEC, "Min", butr->xmin, dy, dx-4, 19, &texmap->flag, 0.0f, 0.0f, 0, 0, "");
 502                 dy-= 19;
 503                 uiDefButBitI(block, TOG, TEXMAP_CLIP_MAX, B_NODE_EXEC, "Max", butr->xmin, dy, dx-4, 19, &texmap->flag, 0.0f, 0.0f, 0, 0, "");
 504
 505         }
 506         return 5*19 + 6;
 507 }
 508
 509
 510 /* only once called */
 511 static void node_shader_set_butfunc(bNodeType *ntype)
 512 {
 513         switch(ntype->type) {
 514                 case NODE_GROUP:        /* note, generic type, but put here because we call this function anyway */
 515                         ntype->butfunc= node_buts_group;
 516                         break;
 517                 case SH_NODE_MATERIAL:
 518                         ntype->butfunc= node_shader_buts_material;
 519                         break;
 520                 case SH_NODE_TEXTURE:
 521                         ntype->butfunc= node_shader_buts_texture;
 522                         break;
 523                 case SH_NODE_NORMAL:
 524                         ntype->butfunc= node_buts_normal;
 525                         break;
 526                 case SH_NODE_CURVE_VEC:
 527                         ntype->butfunc= node_buts_curvevec;
 528                         break;
 529                 case SH_NODE_CURVE_RGB:
 530                         ntype->butfunc= node_buts_curvecol;
 531                         break;
 532                 case SH_NODE_MAPPING:
 533                         ntype->butfunc= node_shader_buts_mapping;
 534                         break;
 535                 case SH_NODE_VALUE:
 536                         ntype->butfunc= node_buts_value;
 537                         break;
 538                 case SH_NODE_RGB:
 539                         ntype->butfunc= node_buts_rgb;
 540                         break;
 541                 case SH_NODE_MIX_RGB:
 542                         ntype->butfunc= node_buts_mix_rgb;
 543                         break;
 544                 case SH_NODE_VALTORGB:
 545                         ntype->butfunc= node_buts_valtorgb;
 546                         break;
 547                 default:
 548                         ntype->butfunc= NULL;
 549         }
 550 }
 551
 552 /* ****************** BUTTON CALLBACKS FOR COMPOSIT NODES ***************** */
 553
 554
 555
 556 static void node_browse_image_cb(void *ntree_v, void *node_v)
 557 {
 558         bNodeTree *ntree= ntree_v;
 559         bNode *node= node_v;
 560
 561         nodeSetActive(ntree, node);
 562
 563         if(node->menunr<1) return;
 564         if(node->menunr==32767) {       /* code for Load New */
 565                 addqueue(curarea->win, UI_BUT_EVENT, B_NODE_LOADIMAGE);
 566         }
 567         else {
 568                 if(node->id) node->id->us--;
 569                 node->id= BLI_findlink(&G.main->image, node->menunr-1);
 570                 id_us_plus(node->id);
 571
 572                 BLI_strncpy(node->name, node->id->name+2, 21);
 573
 574                 addqueue(curarea->win, RENDERPREVIEW, 1);
 575         }
 576         node->menunr= 0;
 577 }
 578
 579 static void node_active_cb(void *ntree_v, void *node_v)
 580 {
 581         nodeSetActive(ntree_v, node_v);
 582 }
 583 static void node_image_anim_cb(void *node_v, void *unused)
 584 {
 585         bNode *node= node_v;
 586         NodeImageAnim *nia;
 587
 588         if(node->storage) {
 589                 MEM_freeN(node->storage);
 590                 node->storage= NULL;
 591         }
 592         else {
 593                 nia= node->storage= MEM_callocN(sizeof(NodeImageAnim), "node image anim");
 594                 nia->sfra= nia->nr= 1;
 595         }
 596         allqueue(REDRAWNODE, 1);
 597 }
 598
 599 static int node_composit_buts_image(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 600 {
 601         if(block) {
 602                 uiBut *bt;
 603                 short dy= (short)butr->ymax-19;
 604                 char *strp;
 605
 606                 uiBlockBeginAlign(block);
 607                 uiBlockSetCol(block, TH_BUT_SETTING2);
 608
 609                 /* browse button */
 610                 IDnames_to_pupstring(&strp, NULL, "LOAD NEW %x32767", &(G.main->image), NULL, NULL);
 611                 node->menunr= 0;
 612                 bt= uiDefButS(block, MENU, B_NOP, strp,
 613                                           butr->xmin, dy, 19, 19,
 614                                           &node->menunr, 0, 0, 0, 0, "Browses existing choices");
 615                 uiButSetFunc(bt, node_browse_image_cb, ntree, node);
 616                 if(strp) MEM_freeN(strp);
 617
 618                 /* Add New button */
 619                 if(node->id==NULL) {
 620                         bt= uiDefBut(block, BUT, B_NODE_LOADIMAGE, "Load New",
 621                                                  butr->xmin+19, dy, (short)(butr->xmax-butr->xmin-19.0f), 19,
 622                                                  NULL, 0.0, 0.0, 0, 0, "Add new Image");
 623                         uiButSetFunc(bt, node_active_cb, ntree, node);
 624                         uiBlockSetCol(block, TH_AUTO);
 625                 }
 626                 else {
 627                         /* name button */
 628                         short width= (short)(butr->xmax-butr->xmin-38.0f);
 629                         bt= uiDefBut(block, TEX, B_NOP, "IMA:",
 630                                                  butr->xmin+19, dy, width, 19,
 631                                                  node->id->name+2, 0.0, 19.0, 0, 0, "Image name");
 632                         uiButSetFunc(bt, node_ID_title_cb, node, NULL);
 633                         bt= uiDefIconBut(block, BUT, B_NOP, ICON_SEQUENCE,
 634                                                  butr->xmax-19, dy, 19, 19,
 635                                                  node->id->name+2, 0.0, 19.0, 0, 0, "Enable/Disable Image animation");
 636                         uiButSetFunc(bt, node_image_anim_cb, node, NULL);
 637                 }
 638                 if(node->storage) {
 639                         NodeImageAnim *nia= node->storage;
 640                         short width= (short)(butr->xmax-butr->xmin)/2;
 641
 642                         dy-= 19;
 643                         uiDefButS(block, NUM, B_NODE_EXEC, "Frs:",
 644                                           butr->xmin, dy, width, 19,
 645                                           &nia->frames, 0.0, 10000.0, 0, 0, "Amount of images used in animation");
 646                         uiDefButS(block, NUM, B_NODE_EXEC, "SFra:",
 647                                           butr->xmin+width, dy, width, 19,
 648                                           &nia->sfra, 1.0, 1000.0, 0, 0, "Start frame of animation");
 649                         dy-= 19;
 650                         uiDefButS(block, NUM, B_NODE_EXEC, "First:",
 651                                           butr->xmin, dy, width, 19,
 652                                           &nia->nr, 0.0, 10000.0, 0, 0, "Number in image name, used as first in animation");
 653                         uiDefButC(block, TOG, B_NODE_EXEC, "Cycl",
 654                                           butr->xmin+width, dy, width, 19,
 655                                           &nia->cyclic, 0.0, 0.0, 0, 0, "Make animation go cyclic");
 656
 657                 }
 658
 659         }
 660         if(node->storage)
 661                 return 57;
 662         else
 663                 return 19;
 664 }
 665
 666 static char *scene_layer_menu(void)
 667 {
 668         SceneRenderLayer *srl;
 669         int len= 32 + 32*BLI_countlist(&G.scene->r.layers);
 670         short a, nr;
 671         char *str= MEM_callocN(len, "menu layers");
 672
 673         strcpy(str, "Active Layer %t");
 674         a= strlen(str);
 675         for(nr=0, srl= G.scene->r.layers.first; srl; srl= srl->next, nr++) {
 676                 a+= sprintf(str+a, "|%s %%x%d", srl->name, nr);
 677         }
 678
 679         return str;
 680 }
 681
 682
 683 static int node_composit_buts_renderresult(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 684 {
 685         if(block) {
 686                 uiBut *bt;
 687                 char *strp;
 688
 689                 strp= scene_layer_menu();
 690                 bt= uiDefButS(block, MENU, B_NODE_EXEC, strp,
 691                                   butr->xmin, butr->ymin, (butr->xmax-butr->xmin), 19,
 692                                   &node->custom1, 0, 0, 0, 0, "Choose Render Layer");
 693                 uiButSetFunc(bt, node_but_title_cb, node, bt);
 694                 MEM_freeN(strp);
 695         }
 696         return 19;
 697 }
 698
 699 static int node_composit_buts_blur(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 700 {
 701         if(block) {
 702                 uiBut *bt;
 703
 704                 uiBlockBeginAlign(block);
 705                 bt=uiDefButS(block, NUM, B_NODE_EXEC, "X:",
 706                                          butr->xmin, butr->ymin, (butr->xmax-butr->xmin)/2, 19,
 707                                          &node->custom1, 0, 256, 0, 0, "");
 708                 bt=uiDefButS(block, NUM, B_NODE_EXEC, "Y:",
 709                                          butr->xmin+(butr->xmax-butr->xmin)/2, butr->ymin, (butr->xmax-butr->xmin)/2, 19,
 710                                          &node->custom2, 0, 256, 0, 0, "");
 711         }
 712         return 19;
 713 }
 714
 715 static int node_composit_buts_filter(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 716 {
 717         if(block) {
 718                 uiBut *bt;
 719
 720                 /* blend type */
 721                 bt=uiDefButS(block, MENU, B_NODE_EXEC, "Soften %x0|Sharpen %x1|Laplace %x2|Sobel %x3|Prewitt %x4|Kirsch %x5|Shadow %x6",
 722                                          butr->xmin, butr->ymin, butr->xmax-butr->xmin, 20,
 723                                          &node->custom1, 0, 0, 0, 0, "");
 724                 uiButSetFunc(bt, node_but_title_cb, node, bt);
 725         }
 726         return 20;
 727 }
 728
 729 static int node_composit_buts_map_value(uiBlock *block, bNodeTree *ntree, bNode *node, rctf *butr)
 730 {
 731         if(block) {
 732                 TexMapping *texmap= node->storage;
 733                 short xstart= (short)butr->xmin;
 734                 short dy= (short)(butr->ymax-19.0f);
 735                 short dx= (short)(butr->xmax-butr->xmin)/2;
 736
 737                 uiBlockBeginAlign(block);
 738                 uiDefButF(block, NUM, B_NODE_EXEC, "Offs:", xstart, dy, 2*dx, 19, texmap->loc, -1000.0f, 1000.0f, 10, 2, "");
 739                 dy-= 19;
 740                 uiDefButF(block, NUM, B_NODE_EXEC, "Size:", xstart, dy, 2*dx, 19, texmap->size, -1000.0f, 1000.0f, 10, 3, "");
 741                 dy-= 23;
 742                 uiBlockBeginAlign(block);
 743                 uiDefButBitI(block, TOG, TEXMAP_CLIP_MIN, B_NODE_EXEC, "Min", xstart, dy, dx, 19, &texmap->flag, 0.0f, 0.0f, 0, 0, "");
 744                 uiDefButF(block, NUM, B_NODE_EXEC, "", xstart+dx, dy, dx, 19, texmap->min, -1000.0f, 1000.0f, 10, 2, "");
 745                 dy-= 19;
 746                 uiDefButBitI(block, TOG, TEXMAP_CLIP_MIN, B_NODE_EXEC, "Max", xstart, dy, dx, 19, &texmap->flag, 0.0f, 0.0f, 0, 0, "");
 747                 uiDefButF(block, NUM, B_NODE_EXEC, "", xstart+dx, dy, dx, 19, texmap->min, -1000.0f, 1000.0f, 10, 2, "");
 748         }
 749         return 80;
 750 }
 751
 752
 753 /* only once called */
 754 static void node_composit_set_butfunc(bNodeType *ntype)
 755 {
 756         switch(ntype->type) {
 757                 case NODE_GROUP:        /* note, generic type, but put here because we call this function anyway */
 758                         ntype->butfunc= node_buts_group;
 759                         break;
 760                 case CMP_NODE_IMAGE:
 761                         ntype->butfunc= node_composit_buts_image;
 762                         break;
 763                 case CMP_NODE_R_RESULT:
 764                         ntype->butfunc= node_composit_buts_renderresult;
 765                         break;
 766                 case CMP_NODE_NORMAL:
 767                         ntype->butfunc= node_buts_normal;
 768                         break;
 769                 case CMP_NODE_CURVE_VEC:
 770                         ntype->butfunc= node_buts_curvevec;
 771                         break;
 772                 case CMP_NODE_CURVE_RGB:
 773                         ntype->butfunc= node_buts_curvecol;
 774                         break;
 775                 case CMP_NODE_VALUE:
 776                         ntype->butfunc= node_buts_value;
 777                         break;
 778                 case CMP_NODE_RGB:
 779                         ntype->butfunc= node_buts_rgb;
 780                         break;
 781                 case CMP_NODE_MIX_RGB:
 782                         ntype->butfunc= node_buts_mix_rgb;
 783                         break;
 784                 case CMP_NODE_VALTORGB:
 785                         ntype->butfunc= node_buts_valtorgb;
 786                         break;
 787                 case CMP_NODE_BLUR:
 788                         ntype->butfunc= node_composit_buts_blur;
 789                         break;
 790                 case CMP_NODE_FILTER:
 791                         ntype->butfunc= node_composit_buts_filter;
 792                         break;
 793                 case CMP_NODE_MAP_VALUE:
 794                         ntype->butfunc= node_composit_buts_map_value;
 795                         break;
 796                 default:
 797                         ntype->butfunc= NULL;
 798         }
 799 }
 800
 801
 802 /* ******* init draw callbacks for all tree types, only called in usiblender.c, once ************* */
 803
 804 void init_node_butfuncs(void)
 805 {
 806         bNodeType **typedefs;
 807
 808         /* shader nodes */
 809         typedefs= node_all_shaders;             /* BKE_node.h */
 810         while( *typedefs) {
 811                 node_shader_set_butfunc(*typedefs);
 812                 typedefs++;
 813         }
 814         /* composit nodes */
 815         typedefs= node_all_composit;            /* BKE_node.h */
 816         while( *typedefs) {
 817                 node_composit_set_butfunc(*typedefs);
 818                 typedefs++;
 819         }
 820 }
 821
 822 /* ************** Generic drawing ************** */
 823
 824 static void draw_nodespace_grid(SpaceNode *snode)
 825 {
 826         float start, step= 25.0f;
 827
 828         BIF_ThemeColorShade(TH_BACK, -10);
 829
 830         start= snode->v2d.cur.xmin -fmod(snode->v2d.cur.xmin, step);
 831
 832         glBegin(GL_LINES);
 833         for(; start<snode->v2d.cur.xmax; start+=step) {
 834                 glVertex2f(start, snode->v2d.cur.ymin);
 835                 glVertex2f(start, snode->v2d.cur.ymax);
 836         }
 837
 838         start= snode->v2d.cur.ymin -fmod(snode->v2d.cur.ymin, step);
 839         for(; start<snode->v2d.cur.ymax; start+=step) {
 840                 glVertex2f(snode->v2d.cur.xmin, start);
 841                 glVertex2f(snode->v2d.cur.xmax, start);
 842         }
 843
 844         /* X and Y axis */
 845         BIF_ThemeColorShade(TH_BACK, -18);
 846         glVertex2f(0.0f, snode->v2d.cur.ymin);
 847         glVertex2f(0.0f, snode->v2d.cur.ymax);
 848         glVertex2f(snode->v2d.cur.xmin, 0.0f);
 849         glVertex2f(snode->v2d.cur.xmax, 0.0f);
 850
 851         glEnd();
 852 }
 853
 854
 855 static void nodeshadow(rctf *rct, float radius, float aspect, int select)
 856 {
 857         float rad;
 858         float a;
 859         char alpha= 2;
 860
 861         glEnable(GL_BLEND);
 862
 863         if(radius > (rct->ymax-rct->ymin-10.0f)/2.0f)
 864                 rad= (rct->ymax-rct->ymin-10.0f)/2.0f;
 865         else
 866                 rad= radius;
 867
 868         if(select) a= 10.0f*aspect; else a= 7.0f*aspect;
 869         for(; a>0.0f; a-=aspect) {
 870                 /* alpha ranges from 2 to 20 or so */
 871                 glColor4ub(0, 0, 0, alpha);
 872                 alpha+= 2;
 873
 874                 gl_round_box(GL_POLYGON, rct->xmin - a, rct->ymin - a, rct->xmax + a, rct->ymax-10.0f + a, rad+a);
 875         }
 876
 877         /* outline emphasis */
 878         glEnable( GL_LINE_SMOOTH );
 879         glColor4ub(0, 0, 0, 100);
 880         gl_round_box(GL_LINE_LOOP, rct->xmin-0.5f, rct->ymin-0.5f, rct->xmax+0.5f, rct->ymax+0.5f, radius);
 881         glDisable( GL_LINE_SMOOTH );
 882
 883         glDisable(GL_BLEND);
 884 }
 885
 886 /* nice AA filled circle */
 887 static void socket_circle_draw(float x, float y, float size, int type, int select)
 888 {
 889         /* 16 values of sin function */
 890         static float si[16] = {
 891                 0.00000000, 0.39435585,0.72479278,0.93775213,
 892                 0.99871650,0.89780453,0.65137248,0.29936312,
 893                 -0.10116832,-0.48530196,-0.79077573,-0.96807711,
 894                 -0.98846832,-0.84864425,-0.57126821,-0.20129852
 895         };
 896         /* 16 values of cos function */
 897         static float co[16] ={
 898                 1.00000000,0.91895781,0.68896691,0.34730525,
 899                 -0.05064916,-0.44039415,-0.75875812,-0.95413925,
 900                 -0.99486932,-0.87434661,-0.61210598,-0.25065253,
 901                 0.15142777,0.52896401,0.82076344,0.97952994,
 902         };
 903         int a;
 904
 905         if(select==0) {
 906                 if(type==-1)
 907                         glColor3ub(0, 0, 0);
 908                 else if(type==SOCK_VALUE)
 909                         glColor3ub(160, 160, 160);
 910                 else if(type==SOCK_VECTOR)
 911                         glColor3ub(100, 100, 200);
 912                 else if(type==SOCK_RGBA)
 913                         glColor3ub(200, 200, 40);
 914                 else
 915                         glColor3ub(100, 200, 100);
 916         }
 917         else {
 918                 if(type==SOCK_VALUE)
 919                         glColor3ub(200, 200, 200);
 920                 else if(type==SOCK_VECTOR)
 921                         glColor3ub(140, 140, 240);
 922                 else if(type==SOCK_RGBA)
 923                         glColor3ub(240, 240, 100);
 924                 else
 925                         glColor3ub(140, 240, 140);
 926         }
 927
 928         glBegin(GL_POLYGON);
 929         for(a=0; a<16; a++)
 930                 glVertex2f(x+size*si[a], y+size*co[a]);
 931         glEnd();
 932
 933         glColor4ub(0, 0, 0, 150);
 934         glEnable(GL_BLEND);
 935         glEnable( GL_LINE_SMOOTH );
 936         glBegin(GL_LINE_LOOP);
 937         for(a=0; a<16; a++)
 938                 glVertex2f(x+size*si[a], y+size*co[a]);
 939         glEnd();
 940         glDisable( GL_LINE_SMOOTH );
 941         glDisable(GL_BLEND);
 942 }
 943
 944 /* not a callback */
 945 static void node_draw_preview(bNodePreview *preview, rctf *prv)
 946 {
 947         float scale= (prv->xmax-prv->xmin)/((float)preview->xsize);
 948         float centx= prv->xmin + 0.5*(prv->xmax-prv->xmin);
 949         float centy= prv->ymin + 0.5*(prv->ymax-prv->ymin);
 950
 951         /* draw standard bacdrop to show alpha */
 952         glBegin(GL_TRIANGLES);
 953         glColor3f(0.625f, 0.625f, 0.625f);
 954         glVertex2f(prv->xmin, prv->ymin);
 955         glVertex2f(prv->xmax, prv->ymin);
 956         glVertex2f(centx, centy);
 957         glVertex2f(prv->xmin, prv->ymax);
 958         glVertex2f(prv->xmax, prv->ymax);
 959         glVertex2f(centx, centy);
 960
 961         glColor3f(0.25f, 0.25f, 0.25f);
 962         glVertex2f(prv->xmin, prv->ymin);
 963         glVertex2f(prv->xmin, prv->ymax);
 964         glVertex2f(centx, centy);
 965         glVertex2f(prv->xmax, prv->ymin);
 966         glVertex2f(prv->xmax, prv->ymax);
 967         glVertex2f(centx, centy);
 968         glEnd();
 969
 970         glPixelZoom(scale, scale);
 971         glEnable(GL_BLEND);
 972
 973         glaDrawPixelsTex(prv->xmin, prv->ymin, preview->xsize, preview->ysize, GL_FLOAT, preview->rect);
 974
 975         glDisable(GL_BLEND);
 976         glPixelZoom(1.0f, 1.0f);
 977
 978 }
 979
 980 /* based on settings in node, sets drawing rect info. each redraw! */
 981 static void node_update_hidden(bNode *node)
 982 {
 983         bNodeSocket *nsock;
 984         float rad, drad, hiddenrad= HIDDEN_RAD;
 985         int totin=0, totout=0, tot;
 986
 987         /* calculate minimal radius */
 988         for(nsock= node->inputs.first; nsock; nsock= nsock->next)
 989                 if(!(nsock->flag & SOCK_HIDDEN))
 990                         totin++;
 991         for(nsock= node->outputs.first; nsock; nsock= nsock->next)
 992                 if(!(nsock->flag & SOCK_HIDDEN))
 993                         totout++;
 994
 995         tot= MAX2(totin, totout);
 996         if(tot>4) {
 997                 hiddenrad += 5.0*(float)(tot-4);
 998         }
 999
1000         node->totr.xmin= node->locx;
1001         node->totr.xmax= node->locx + 3*hiddenrad + node->miniwidth;
1002         node->totr.ymax= node->locy + (hiddenrad - 0.5f*NODE_DY);
1003         node->totr.ymin= node->totr.ymax - 2*hiddenrad;
1004
1005         /* output sockets */
1006         rad=drad= M_PI/(1.0f + (float)totout);
1007
1008         for(nsock= node->outputs.first; nsock; nsock= nsock->next) {
1009                 if(!(nsock->flag & SOCK_HIDDEN)) {
1010                         nsock->locx= node->totr.xmax - hiddenrad + sin(rad)*hiddenrad;
1011                         nsock->locy= node->totr.ymin + hiddenrad + cos(rad)*hiddenrad;
1012                         rad+= drad;
1013                 }
1014         }
1015
1016         /* input sockets */
1017         rad=drad= - M_PI/(1.0f + (float)totin);
1018
1019         for(nsock= node->inputs.first; nsock; nsock= nsock->next) {
1020                 if(!(nsock->flag & SOCK_HIDDEN)) {
1021                         nsock->locx= node->totr.xmin + hiddenrad + sin(rad)*hiddenrad;
1022                         nsock->locy= node->totr.ymin + hiddenrad + cos(rad)*hiddenrad;
1023                         rad+= drad;
1024                 }
1025         }
1026 }
1027
1028 /* based on settings in node, sets drawing rect info. each redraw! */
1029 static void node_update(bNode *node)
1030 {
1031         bNodeSocket *nsock;
1032         float dy= node->locy;
1033
1034         /* header */
1035         dy-= NODE_DY;
1036
1037         /* little bit space in top */
1038         if(node->outputs.first)
1039                 dy-= NODE_DYS/2;
1040
1041         /* output sockets */
1042         for(nsock= node->outputs.first; nsock; nsock= nsock->next) {
1043                 if(!(nsock->flag & SOCK_HIDDEN)) {
1044                         nsock->locx= node->locx + node->width;
1045                         nsock->locy= dy - NODE_DYS;
1046                         dy-= NODE_DY;
1047                 }
1048         }
1049
1050         node->prvr.xmin= node->butr.xmin= node->locx + NODE_DYS;
1051         node->prvr.xmax= node->butr.xmax= node->locx + node->width- NODE_DYS;
1052
1053         /* preview rect? */
1054         if(node->flag & NODE_PREVIEW) {
1055                 /* only recalculate size when there's a preview actually, otherwise we use stored result */
1056                 if(node->preview && node->preview->rect) {
1057                         float aspect= 1.0f;
1058
1059                         if(node->preview && node->preview->xsize && node->preview->ysize)
1060                                 aspect= (float)node->preview->ysize/(float)node->preview->xsize;
1061
1062                         dy-= NODE_DYS/2;
1063                         node->prvr.ymax= dy;
1064                         node->prvr.ymin= dy - aspect*(node->width-NODE_DY);
1065                         dy= node->prvr.ymin - NODE_DYS/2;
1066                 }
1067                 else {
1068                         float oldh= node->prvr.ymax - node->prvr.ymin;
1069                         if(oldh==0.0f)
1070                                 oldh= node->width-NODE_DY;
1071                         dy-= NODE_DYS/2;
1072                         node->prvr.ymax= dy;
1073                         node->prvr.ymin= dy - oldh;
1074                         dy= node->prvr.ymin - NODE_DYS/2;
1075                 }
1076         }
1077
1078         /* buttons rect? */
1079         if((node->flag & NODE_OPTIONS) && node->typeinfo->butfunc) {
1080                 dy-= NODE_DYS/2;
1081                 node->butr.ymax= dy;
1082                 node->butr.ymin= dy - (float)node->typeinfo->butfunc(NULL, NULL, node, NULL);
1083                 dy= node->butr.ymin - NODE_DYS/2;
1084         }
1085
1086         /* input sockets */
1087         for(nsock= node->inputs.first; nsock; nsock= nsock->next) {
1088                 if(!(nsock->flag & SOCK_HIDDEN)) {
1089                         nsock->locx= node->locx;
1090                         nsock->locy= dy - NODE_DYS;
1091                         dy-= NODE_DY;
1092                 }
1093         }
1094
1095         /* little bit space in end */
1096         if(node->inputs.first || (node->flag & (NODE_OPTIONS|NODE_PREVIEW))==0 )
1097                 dy-= NODE_DYS/2;
1098
1099         node->totr.xmin= node->locx;
1100         node->totr.xmax= node->locx + node->width;
1101         node->totr.ymax= node->locy;
1102         node->totr.ymin= dy;
1103 }
1104
1105 /* based on settings in node, sets drawing rect info. each redraw! */
1106 /* note: this assumes only 1 group at a time is drawn (linked data) */
1107 /* in node->totr the entire boundbox for the group is stored */
1108 static void node_update_group(bNode *gnode)
1109 {
1110         bNodeTree *ngroup= (bNodeTree *)gnode->id;
1111         bNode *node;
1112         bNodeSocket *nsock;
1113         rctf *rect= &gnode->totr;
1114         int counter;
1115
1116         /* center them, is a bit of abuse of locx and locy though */
1117         for(node= ngroup->nodes.first; node; node= node->next) {
1118                 node->locx+= gnode->locx;
1119                 node->locy+= gnode->locy;
1120                 if(node->flag & NODE_HIDDEN)
1121                         node_update_hidden(node);
1122                 else
1123                         node_update(node);
1124                 node->locx-= gnode->locx;
1125                 node->locy-= gnode->locy;
1126         }
1127         counter= 1;
1128         for(node= ngroup->nodes.first; node; node= node->next) {
1129                 if(counter) {
1130                         *rect= node->totr;
1131                         counter= 0;
1132                 }
1133                 else
1134                         BLI_union_rctf(rect, &node->totr);
1135         }
1136         if(counter==1) return;  /* should be prevented? */
1137
1138         rect->xmin-= NODE_DY;
1139         rect->ymin-= NODE_DY;
1140         rect->xmax+= NODE_DY;
1141         rect->ymax+= NODE_DY;
1142
1143         /* output sockets */
1144         for(nsock= gnode->outputs.first; nsock; nsock= nsock->next) {
1145                 nsock->locx= rect->xmax;
1146                 nsock->locy= nsock->tosock->locy;
1147         }
1148
1149         /* input sockets */
1150         for(nsock= gnode->inputs.first; nsock; nsock= nsock->next) {
1151                 nsock->locx= rect->xmin;
1152                 nsock->locy= nsock->tosock->locy;
1153         }
1154 }
1155
1156 static void node_scaling_widget(int color_id, float aspect, float xmin, float ymin, float xmax, float ymax)
1157 {
1158         float dx;
1159         float dy;
1160
1161         dx= 0.5f*(xmax-xmin);
1162         dy= 0.5f*(ymax-ymin);
1163
1164         BIF_ThemeColorShade(color_id, +30);
1165         fdrawline(xmin, ymin, xmax, ymax);
1166         fdrawline(xmin+dx, ymin, xmax, ymax-dy);
1167
1168         BIF_ThemeColorShade(color_id, -10);
1169         fdrawline(xmin, ymin+aspect, xmax, ymax+aspect);
1170         fdrawline(xmin+dx, ymin+aspect, xmax, ymax-dy+aspect);
1171 }
1172
1173 static int node_get_colorid(bNode *node)
1174 {
1175         if(node->typeinfo->nclass==NODE_CLASS_INPUT)
1176                 return TH_NODE_IN_OUT;
1177         if(node->typeinfo->nclass==NODE_CLASS_OUTPUT) {
1178                 if(node->flag & NODE_DO_OUTPUT)
1179                         return TH_NODE_IN_OUT;
1180                 else
1181                         return TH_NODE;
1182         }
1183         if(node->typeinfo->nclass==NODE_CLASS_GENERATOR)
1184                 return TH_NODE_GENERATOR;
1185         if(node->typeinfo->nclass==NODE_CLASS_OPERATOR)
1186                 return TH_NODE_OPERATOR;
1187         if(node->typeinfo->nclass==NODE_CLASS_GROUP)
1188                 return TH_NODE_GROUP;
1189         return TH_NODE;
1190 }
1191
1192 static void node_draw_basis(ScrArea *sa, SpaceNode *snode, bNode *node)
1193 {
1194         bNodeSocket *sock;
1195         uiBut *bt;
1196         rctf *rct= &node->totr;
1197         float slen, iconofs;
1198         int ofs, color_id= node_get_colorid(node);
1199
1200         uiSetRoundBox(15-4);
1201         nodeshadow(rct, BASIS_RAD, snode->aspect, node->flag & SELECT);
1202
1203         /* header */
1204         if(color_id==TH_NODE)
1205                 BIF_ThemeColorShade(color_id, -20);
1206         else
1207                 BIF_ThemeColor(color_id);
1208
1209         uiSetRoundBox(3);
1210         uiRoundBox(rct->xmin, rct->ymax-NODE_DY, rct->xmax, rct->ymax, BASIS_RAD);
1211
1212         /* show/hide icons, note this sequence is copied in editnode.c */
1213         iconofs= rct->xmax;
1214
1215         if(node->typeinfo->flag & NODE_PREVIEW) {
1216                 int icon_id;
1217
1218                 if(node->flag & (NODE_ACTIVE_ID|NODE_DO_OUTPUT))
1219                         icon_id= ICON_MATERIAL;
1220                 else
1221                         icon_id= ICON_MATERIAL_DEHLT;
1222                 iconofs-= 18.0f;
1223                 glEnable(GL_BLEND);
1224                 BIF_icon_set_aspect(icon_id, snode->aspect);
1225                 BIF_icon_draw_blended(iconofs, rct->ymax-NODE_DY+2, icon_id, 0, -60);
1226                 glDisable(GL_BLEND);
1227         }
1228         if(node->type == NODE_GROUP) {
1229                 iconofs-= 18.0f;
1230                 glEnable(GL_BLEND);
1231                 BIF_icon_set_aspect(ICON_NODE, snode->aspect);
1232                 BIF_icon_draw_blended(iconofs, rct->ymax-NODE_DY+2, ICON_NODE, 0, -60);
1233                 glDisable(GL_BLEND);
1234         }
1235         if(node->typeinfo->flag & NODE_OPTIONS) {
1236                 iconofs-= 18.0f;
1237                 glEnable(GL_BLEND);
1238                 BIF_icon_set_aspect(ICON_BUTS, snode->aspect);
1239                 BIF_icon_draw_blended(iconofs, rct->ymax-NODE_DY+2, ICON_BUTS, 0, -60);
1240                 glDisable(GL_BLEND);
1241         }
1242         if(node->outputs.first) {
1243                 int shade;
1244                 /* socket selector */
1245                 iconofs-= 18.0f;
1246                 if(node_has_hidden_sockets(node))
1247                         shade= -40;
1248                 else
1249                         shade= -90;
1250                 glEnable(GL_BLEND);
1251                 BIF_icon_set_aspect(ICON_PLUS, snode->aspect);
1252                 BIF_icon_draw_blended(iconofs, rct->ymax-NODE_DY+2, ICON_PLUS, 0, shade);
1253                 glDisable(GL_BLEND);
1254         }
1255
1256         /* title */
1257         if(node->flag & SELECT)
1258                 BIF_ThemeColor(TH_TEXT_HI);
1259         else
1260                 BIF_ThemeColorBlendShade(TH_TEXT, color_id, 0.4, 10);
1261
1262         /* open/close entirely? */
1263         ui_draw_tria_icon(rct->xmin+8.0f, rct->ymax-NODE_DY+4.0f, snode->aspect, 'v');
1264
1265         if(node->flag & SELECT)
1266                 BIF_ThemeColor(TH_TEXT_HI);
1267         else
1268                 BIF_ThemeColor(TH_TEXT);
1269
1270         ui_rasterpos_safe(rct->xmin+19.0f, rct->ymax-NODE_DY+5.0f, snode->aspect);
1271         snode_drawstring(snode, node->name, (int)(iconofs - rct->xmin-18.0f));
1272
1273         /* body */
1274         BIF_ThemeColor(TH_NODE);
1275         uiSetRoundBox(8);
1276         uiRoundBox(rct->xmin, rct->ymin, rct->xmax, rct->ymax-NODE_DY, BASIS_RAD);
1277
1278         /* scaling indicator */
1279         node_scaling_widget(TH_NODE, snode->aspect, rct->xmax-BASIS_RAD*snode->aspect, rct->ymin, rct->xmax, rct->ymin+BASIS_RAD*snode->aspect);
1280
1281         /* outline active emphasis */
1282         if(node->flag & NODE_ACTIVE) {
1283                 glEnable(GL_BLEND);
1284                 glColor4ub(200, 200, 200, 140);
1285                 uiSetRoundBox(15-4);
1286                 gl_round_box(GL_LINE_LOOP, rct->xmin, rct->ymin, rct->xmax, rct->ymax, BASIS_RAD);
1287                 glDisable(GL_BLEND);
1288         }
1289
1290         /* we make buttons for input sockets, if... */
1291         if(node->flag & NODE_OPTIONS) {
1292                 if(node->inputs.first || node->typeinfo->butfunc) {
1293                         uiBlock *block= uiNewBlock(NULL, "node buttons", UI_EMBOSS, UI_HELV, sa->win);
1294                         BLI_addtail(&sa->uiblocks, block);
1295                         uiBlockSetFlag(block, UI_BLOCK_NO_HILITE);
1296                         if(snode->id)
1297                                 uiSetButLock(snode->id->lib!=NULL, "Can't edit library data");
1298                         node->block= block;
1299                 }
1300         }
1301
1302         /* hurmf... another candidate for callback, have to see how this works first */
1303         if(node->id && node->block && snode->treetype==NTREE_SHADER)
1304                 nodeShaderSynchronizeID(node, 0);
1305
1306         /* socket inputs, buttons */
1307         for(sock= node->inputs.first; sock; sock= sock->next) {
1308                 if(!(sock->flag & SOCK_HIDDEN)) {
1309                         socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
1310
1311                         if(node->block && sock->link==NULL) {
1312                                 float *butpoin= sock->ns.vec;
1313
1314                                 if(node->type==NODE_GROUP && sock->tosock)
1315                                         butpoin= sock->tosock->ns.vec;
1316
1317                                 if(sock->type==SOCK_VALUE) {
1318                                         bt= uiDefButF(node->block, NUM, B_NODE_EXEC, sock->name,
1319                                                   (short)sock->locx+NODE_DYS, (short)(sock->locy)-9, (short)node->width-NODE_DY, 17,
1320                                                   butpoin, 0.0f, 1.0f, 10, 2, "");
1321                                         uiButSetFunc(bt, node_sync_cb, snode, node);
1322                                 }
1323                                 else if(sock->type==SOCK_VECTOR) {
1324                                         uiDefBlockBut(node->block, socket_vector_menu, butpoin, sock->name,
1325                                                   (short)sock->locx+NODE_DYS, (short)sock->locy-9, (short)node->width-NODE_DY, 17,
1326                                                   "");
1327                                 }
1328                                 else if(node->block && sock->type==SOCK_RGBA) {
1329                                         short labelw= node->width-NODE_DY-40, width;
1330
1331                                         if(labelw>0) width= 40; else width= node->width-NODE_DY;
1332
1333                                         bt= uiDefButF(node->block, COL, B_NODE_EXEC, "",
1334                                                 (short)(sock->locx+NODE_DYS), (short)sock->locy-8, width, 15,
1335                                                    butpoin, 0, 0, 0, 0, "");
1336                                         uiButSetFunc(bt, node_sync_cb, snode, node);
1337
1338                                         if(labelw>0) uiDefBut(node->block, LABEL, 0, sock->name,
1339                                                                                    (short)(sock->locx+NODE_DYS) + 40, (short)sock->locy-8, labelw, 15,
1340                                                                                    NULL, 0, 0, 0, 0, "");
1341                                 }
1342                         }
1343                         else {
1344                                 BIF_ThemeColor(TH_TEXT);
1345                                 ui_rasterpos_safe(sock->locx+8.0f, sock->locy-5.0f, snode->aspect);
1346                                 BIF_DrawString(snode->curfont, sock->name, 0);
1347                         }
1348                 }
1349         }
1350
1351         /* socket outputs */
1352         for(sock= node->outputs.first; sock; sock= sock->next) {
1353                 if(!(sock->flag & SOCK_HIDDEN)) {
1354                         socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
1355
1356                         BIF_ThemeColor(TH_TEXT);
1357                         ofs= 0;
1358                         slen= snode->aspect*BIF_GetStringWidth(snode->curfont, sock->name, 0);
1359                         while(slen > node->width) {
1360                                 ofs++;
1361                                 slen= snode->aspect*BIF_GetStringWidth(snode->curfont, sock->name+ofs, 0);
1362                         }
1363                         ui_rasterpos_safe(sock->locx-8.0f-slen, sock->locy-5.0f, snode->aspect);
1364                         BIF_DrawString(snode->curfont, sock->name+ofs, 0);
1365                 }
1366         }
1367
1368         /* preview */
1369         if(node->flag & NODE_PREVIEW)
1370                 if(node->preview && node->preview->rect)
1371                         node_draw_preview(node->preview, &node->prvr);
1372
1373         /* buttons */
1374         if(node->flag & NODE_OPTIONS) {
1375                 if(node->typeinfo->butfunc) {
1376                         node->typeinfo->butfunc(node->block, snode->nodetree, node, &node->butr);
1377                 }
1378                 uiDrawBlock(node->block);
1379         }
1380
1381 }
1382
1383 void node_draw_hidden(SpaceNode *snode, bNode *node)
1384 {
1385         bNodeSocket *sock;
1386         rctf *rct= &node->totr;
1387         float dx, centy= 0.5f*(rct->ymax+rct->ymin);
1388         float hiddenrad= 0.5f*(rct->ymax-rct->ymin);
1389         int color_id= node_get_colorid(node);
1390
1391         /* shadow */
1392         uiSetRoundBox(15);
1393         nodeshadow(rct, hiddenrad, snode->aspect, node->flag & SELECT);
1394
1395         /* body */
1396         BIF_ThemeColor(color_id);
1397         uiRoundBox(rct->xmin, rct->ymin, rct->xmax, rct->ymax, hiddenrad);
1398
1399         /* outline active emphasis */
1400         if(node->flag & NODE_ACTIVE) {
1401                 glEnable(GL_BLEND);
1402                 glColor4ub(200, 200, 200, 140);
1403                 gl_round_box(GL_LINE_LOOP, rct->xmin, rct->ymin, rct->xmax, rct->ymax, hiddenrad);
1404                 glDisable(GL_BLEND);
1405         }
1406
1407         /* title */
1408         if(node->flag & SELECT)
1409                 BIF_ThemeColor(TH_TEXT_HI);
1410         else
1411                 BIF_ThemeColorBlendShade(TH_TEXT, color_id, 0.4, 10);
1412
1413         /* open entirely icon */
1414         ui_draw_tria_icon(rct->xmin+9.0f, centy-6.0f, snode->aspect, 'h');
1415
1416         if(node->flag & SELECT)
1417                 BIF_ThemeColor(TH_TEXT_HI);
1418         else
1419                 BIF_ThemeColor(TH_TEXT);
1420
1421         if(node->miniwidth>0.0f) {
1422                 ui_rasterpos_safe(rct->xmin+21.0f, centy-4.0f, snode->aspect);
1423                 snode_drawstring(snode, node->name, (int)(rct->xmax - rct->xmin-18.0f -12.0f));
1424         }
1425
1426         /* scale widget thing */
1427         BIF_ThemeColorShade(color_id, -10);
1428         dx= 10.0f;
1429         fdrawline(rct->xmax-dx, centy-4.0f, rct->xmax-dx, centy+4.0f);
1430         fdrawline(rct->xmax-dx-3.0f*snode->aspect, centy-4.0f, rct->xmax-dx-3.0f*snode->aspect, centy+4.0f);
1431
1432         BIF_ThemeColorShade(color_id, +30);
1433         dx-= snode->aspect;
1434         fdrawline(rct->xmax-dx, centy-4.0f, rct->xmax-dx, centy+4.0f);
1435         fdrawline(rct->xmax-dx-3.0f*snode->aspect, centy-4.0f, rct->xmax-dx-3.0f*snode->aspect, centy+4.0f);
1436
1437         /* sockets */
1438         for(sock= node->inputs.first; sock; sock= sock->next) {
1439                 if(!(sock->flag & SOCK_HIDDEN))
1440                         socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
1441         }
1442
1443         for(sock= node->outputs.first; sock; sock= sock->next) {
1444                 if(!(sock->flag & SOCK_HIDDEN))
1445                         socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
1446         }
1447 }
1448
1449 /* note; this is used for fake links in groups too */
1450 void node_draw_link(SpaceNode *snode, bNodeLink *link)
1451 {
1452         float vec[4][3];
1453         float dist, spline_step, mx=0.0f, my=0.0f;
1454         int curve_res, do_shaded= 1, th_col1= TH_WIRE, th_col2= TH_WIRE;
1455
1456         if(link->fromnode==NULL && link->tonode==NULL)
1457                 return;
1458
1459         /* this is dragging link */
1460         if(link->fromnode==NULL || link->tonode==NULL) {
1461                 short mval[2];
1462                 getmouseco_areawin(mval);
1463                 areamouseco_to_ipoco(G.v2d, mval, &mx, &my);
1464                 BIF_ThemeColor(TH_WIRE);
1465                 do_shaded= 0;
1466         }
1467         else {
1468                 /* a bit ugly... but thats how we detect the internal group links */
1469                 if(link->fromnode==link->tonode) {
1470                         BIF_ThemeColorBlend(TH_BACK, TH_WIRE, 0.25f);
1471                         do_shaded= 0;
1472                 }
1473                 else {
1474                         /* check cyclic */
1475                         if(link->fromnode->level >= link->tonode->level && link->tonode->level!=0xFFF) {
1476                                 if(link->fromnode->flag & SELECT)
1477                                         th_col1= TH_EDGE_SELECT;
1478                                 if(link->tonode->flag & SELECT)
1479                                         th_col2= TH_EDGE_SELECT;
1480                         }
1481                         else {
1482                                 BIF_ThemeColor(TH_REDALERT);
1483                                 do_shaded= 0;
1484                         }
1485                 }
1486         }
1487
1488         vec[0][2]= vec[1][2]= vec[2][2]= vec[3][2]= 0.0; /* only 2d spline, set the Z to 0*/
1489
1490         /* in v0 and v3 we put begin/end points */
1491         if(link->fromnode) {
1492                 vec[0][0]= link->fromsock->locx;
1493                 vec[0][1]= link->fromsock->locy;
1494         }
1495         else {
1496                 vec[0][0]= mx;
1497                 vec[0][1]= my;
1498         }
1499         if(link->tonode) {
1500                 vec[3][0]= link->tosock->locx;
1501                 vec[3][1]= link->tosock->locy;
1502         }
1503         else {
1504                 vec[3][0]= mx;
1505                 vec[3][1]= my;
1506         }
1507
1508         dist= 0.5f*ABS(vec[0][0] - vec[3][0]);
1509
1510         /* check direction later, for top sockets */
1511         vec[1][0]= vec[0][0]+dist;
1512         vec[1][1]= vec[0][1];
1513
1514         vec[2][0]= vec[3][0]-dist;
1515         vec[2][1]= vec[3][1];
1516
1517         if( MIN4(vec[0][0], vec[1][0], vec[2][0], vec[3][0]) > G.v2d->cur.xmax); /* clipped */
1518         else if ( MAX4(vec[0][0], vec[1][0], vec[2][0], vec[3][0]) < G.v2d->cur.xmin); /* clipped */
1519         else {
1520                 curve_res = 24;
1521
1522                 /* we can reuse the dist variable here to increment the GL curve eval amount*/
1523                 dist = 1.0f/curve_res;
1524                 spline_step = 0.0f;
1525
1526                 glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, 4, vec[0]);
1527                 glBegin(GL_LINE_STRIP);
1528                 while (spline_step < 1.000001f) {
1529                         if(do_shaded)
1530                                 BIF_ThemeColorBlend(th_col1, th_col2, spline_step);
1531                         glEvalCoord1f(spline_step);
1532                         spline_step += dist;
1533                 }
1534                 glEnd();
1535         }
1536 }
1537
1538 static void node_draw_nodetree(ScrArea *sa, SpaceNode *snode, bNodeTree *ntree)
1539 {
1540         bNode *node;
1541         bNodeLink *link;
1542
1543         if(ntree==NULL) return;         /* groups... */
1544
1545         /* node lines */
1546         glEnable(GL_BLEND);
1547         glEnable( GL_LINE_SMOOTH );
1548         for(link= ntree->links.first; link; link= link->next)
1549                 node_draw_link(snode, link);
1550         glDisable(GL_BLEND);
1551         glDisable( GL_LINE_SMOOTH );
1552
1553         /* not selected first */
1554         for(node= ntree->nodes.first; node; node= node->next) {
1555                 node->block= NULL;      /* were freed */
1556                 if(!(node->flag & SELECT)) {
1557                         if(node->flag & NODE_GROUP_EDIT);
1558                         else if(node->flag & NODE_HIDDEN)
1559                                 node_draw_hidden(snode, node);
1560                         else
1561                                 node_draw_basis(sa, snode, node);
1562                 }
1563         }
1564
1565         /* selected */
1566         for(node= ntree->nodes.first; node; node= node->next) {
1567                 if(node->flag & SELECT) {
1568                         if(node->flag & NODE_GROUP_EDIT);
1569                         else if(node->flag & NODE_HIDDEN)
1570                                 node_draw_hidden(snode, node);
1571                         else
1572                                 node_draw_basis(sa, snode, node);
1573                 }
1574         }
1575 }
1576
1577 /* fake links from groupnode to internal nodes */
1578 static void node_draw_group_links(SpaceNode *snode, bNode *gnode)
1579 {
1580         bNodeLink fakelink;
1581         bNodeSocket *sock;
1582
1583         glEnable(GL_BLEND);
1584         glEnable( GL_LINE_SMOOTH );
1585
1586         fakelink.tonode= fakelink.fromnode= gnode;
1587
1588         for(sock= gnode->inputs.first; sock; sock= sock->next) {
1589                 if(!(sock->flag & SOCK_HIDDEN)) {
1590                         if(sock->tosock) {
1591                                 fakelink.fromsock= sock;
1592                                 fakelink.tosock= sock->tosock;
1593                                 node_draw_link(snode, &fakelink);
1594                         }
1595                 }
1596         }
1597
1598         for(sock= gnode->outputs.first; sock; sock= sock->next) {
1599                 if(!(sock->flag & SOCK_HIDDEN)) {
1600                         if(sock->tosock) {
1601                                 fakelink.tosock= sock;
1602                                 fakelink.fromsock= sock->tosock;
1603                                 node_draw_link(snode, &fakelink);
1604                         }
1605                 }
1606         }
1607
1608         glDisable(GL_BLEND);
1609         glDisable( GL_LINE_SMOOTH );
1610 }
1611
1612 /* groups are, on creation, centered around 0,0 */
1613 static void node_draw_group(ScrArea *sa, SpaceNode *snode, bNode *gnode)
1614 {
1615         bNodeTree *ngroup= (bNodeTree *)gnode->id;
1616         bNodeSocket *sock;
1617         rctf rect= gnode->totr;
1618
1619         /* backdrop header */
1620         glEnable(GL_BLEND);
1621         uiSetRoundBox(3);
1622         BIF_ThemeColorShadeAlpha(TH_NODE_GROUP, 0, -70);
1623         gl_round_box(GL_POLYGON, rect.xmin, rect.ymax, rect.xmax, rect.ymax+NODE_DY, BASIS_RAD);
1624
1625         /* backdrop body */
1626         BIF_ThemeColorShadeAlpha(TH_BACK, -8, -70);
1627         uiSetRoundBox(12);
1628         gl_round_box(GL_POLYGON, rect.xmin, rect.ymin, rect.xmax, rect.ymax, BASIS_RAD);
1629
1630         /* selection outline */
1631         uiSetRoundBox(15);
1632         glColor4ub(200, 200, 200, 140);
1633         glEnable( GL_LINE_SMOOTH );
1634         gl_round_box(GL_LINE_LOOP, rect.xmin, rect.ymin, rect.xmax, rect.ymax+NODE_DY, BASIS_RAD);
1635         glDisable( GL_LINE_SMOOTH );
1636         glDisable(GL_BLEND);
1637
1638         /* backdrop title */
1639         BIF_ThemeColor(TH_TEXT_HI);
1640         ui_rasterpos_safe(rect.xmin+8.0f, rect.ymax+5.0f, snode->aspect);
1641         BIF_DrawString(snode->curfont, ngroup->id.name+2, 0);
1642
1643         /* links from groupsockets to the internal nodes */
1644         node_draw_group_links(snode, gnode);
1645
1646         /* group sockets */
1647         for(sock= gnode->inputs.first; sock; sock= sock->next)
1648                 if(!(sock->flag & SOCK_HIDDEN))
1649                         socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
1650         for(sock= gnode->outputs.first; sock; sock= sock->next)
1651                 if(!(sock->flag & SOCK_HIDDEN))
1652                         socket_circle_draw(sock->locx, sock->locy, NODE_SOCKSIZE, sock->type, sock->flag & SELECT);
1653
1654         /* and finally the whole tree */
1655         node_draw_nodetree(sa, snode, ngroup);
1656 }
1657
1658
1659 void drawnodespace(ScrArea *sa, void *spacedata)
1660 {
1661         SpaceNode *snode= sa->spacedata.first;
1662         float col[3];
1663
1664         BIF_GetThemeColor3fv(TH_BACK, col);
1665         glClearColor(col[0], col[1], col[2], 0.0);
1666         glClear(GL_COLOR_BUFFER_BIT);
1667
1668         calc_scrollrcts(sa, &(snode->v2d), sa->winx, sa->winy);
1669
1670         myortho2(snode->v2d.cur.xmin, snode->v2d.cur.xmax, snode->v2d.cur.ymin, snode->v2d.cur.ymax);
1671         bwin_clear_viewmat(sa->win);    /* clear buttons view */
1672         glLoadIdentity();
1673
1674         /* always free, blocks here have no unique identifier (1 block per node) */
1675         uiFreeBlocksWin(&sa->uiblocks, sa->win);
1676
1677         /* only set once */
1678         glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
1679         glEnable(GL_MAP1_VERTEX_3);
1680
1681         /* aspect+font, set each time */
1682         snode->aspect= (snode->v2d.cur.xmax - snode->v2d.cur.xmin)/((float)sa->winx);
1683         snode->curfont= uiSetCurFont_ext(snode->aspect);
1684
1685         /* backdrop */
1686         draw_nodespace_grid(snode);
1687
1688         /* nodes */
1689         snode_set_context(snode);
1690
1691         if(snode->nodetree) {
1692                 bNode *node;
1693
1694                 /* for now, we set drawing coordinates on each redraw */
1695                 for(node= snode->nodetree->nodes.first; node; node= node->next) {
1696                         if(node->flag & NODE_GROUP_EDIT)
1697                                 node_update_group(node);
1698                         else if(node->flag & NODE_HIDDEN)
1699                                 node_update_hidden(node);
1700                         else
1701                                 node_update(node);
1702                 }
1703
1704                 node_draw_nodetree(sa, snode, snode->nodetree);
1705
1706                 /* active group */
1707                 for(node= snode->nodetree->nodes.first; node; node= node->next) {
1708                         if(node->flag & NODE_GROUP_EDIT)
1709                                 node_draw_group(sa, snode, node);
1710                 }
1711         }
1712
1713         /* restore viewport (not needed yet) */
1714         mywinset(sa->win);
1715
1716         /* ortho at pixel level curarea */
1717         myortho2(-0.375, sa->winx-0.375, -0.375, sa->winy-0.375);
1718
1719         draw_area_emboss(sa);
1720         curarea->win_swap= WIN_BACK_OK;
1721
1722         /* in the end, this is a delayed previewrender test, to allow buttons to be first */
1723         if(snode->flag & SNODE_DO_PREVIEW) {
1724                 addafterqueue(sa->win, RENDERPREVIEW, 1);
1725                 snode->flag &= ~SNODE_DO_PREVIEW;
1726         }
1727 }