source/blender/editors/space_image/image_draw.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) 2001-2002 by NaN Holding BV.
  21  * All rights reserved.
  22  *
  23  * Contributor(s): Blender Foundation, 2002-2009
  24  *
  25  * ***** END GPL LICENSE BLOCK *****
  26  */
  27
  28 #include <math.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31
  32 #include "MEM_guardedalloc.h"
  33
  34 #include "DNA_brush_types.h"
  35 #include "DNA_camera_types.h"
  36 #include "DNA_image_types.h"
  37 #include "DNA_object_types.h"
  38 #include "DNA_space_types.h"
  39 #include "DNA_scene_types.h"
  40 #include "DNA_screen_types.h"
  41
  42 #include "PIL_time.h"
  43
  44 #include "IMB_imbuf.h"
  45 #include "IMB_imbuf_types.h"
  46
  47 #include "BKE_colortools.h"
  48 #include "BKE_global.h"
  49 #include "BKE_image.h"
  50 #include "BKE_utildefines.h"
  51
  52 #include "BIF_gl.h"
  53 #include "BIF_glutil.h"
  54
  55 #include "ED_image.h"
  56 #include "ED_screen.h"
  57
  58 #include "UI_interface.h"
  59 #include "UI_resources.h"
  60 #include "UI_view2d.h"
  61
  62 #include "WM_api.h"
  63
  64 #include "image_intern.h"
  65
  66 #define HEADER_HEIGHT 18
  67
  68 #if 0
  69 static int image_preview_active(SpaceImage *sima, Scene *scene, float *xim, float *yim)
  70 {
  71         /* only when compositor shows, and image handler set */
  72         if(sima->image && sima->image->type==IMA_TYPE_COMPOSITE) {
  73                 /* XXX panels .. */
  74 #if 0
  75                 short a;
  76
  77                 for(a=0; a<SPACE_MAXHANDLER; a+=2) {
  78                         if(sima->blockhandler[a] == IMAGE_HANDLER_PREVIEW) {
  79                                 if(xim) *xim= (scene->r.size*scene->r.xsch)/100;
  80                                 if(yim) *yim= (scene->r.size*scene->r.ysch)/100;
  81                                 return 1;
  82                         }
  83                 }
  84 #endif
  85         }
  86         return 0;
  87 }
  88 #endif
  89
  90 /* are there curves? curves visible? and curves do something? */
  91 static int image_curves_active(SpaceImage *sima)
  92 {
  93         if(sima->cumap) {
  94                 if(curvemapping_RGBA_does_something(sima->cumap)) {
  95                         /* XXX panels .. */
  96 #if 0
  97                         short a;
  98                         for(a=0; a<SPACE_MAXHANDLER; a+=2) {
  99                                 if(sima->blockhandler[a] == IMAGE_HANDLER_CURVES)
 100                                         return 1;
 101                         }
 102 #endif
 103                 }
 104         }
 105
 106         return 0;
 107 }
 108
 109 static void image_verify_buffer_float(SpaceImage *sima, ImBuf *ibuf)
 110 {
 111         /* detect if we need to redo the curve map.
 112            ibuf->rect is zero for compositor and render results after change
 113            convert to 32 bits always... drawing float rects isnt supported well (atis)
 114
 115            NOTE: if float buffer changes, we have to manually remove the rect
 116         */
 117
 118         if(ibuf->rect_float) {
 119                 if(ibuf->rect==NULL) {
 120                         if(image_curves_active(sima)) {
 121                                 curvemapping_do_ibuf(sima->cumap, ibuf);
 122                         }
 123                         else {
 124                                 IMB_rect_from_float(ibuf);
 125                         }
 126                 }
 127         }
 128 }
 129
 130 static void draw_render_info(SpaceImage *sima, ARegion *ar)
 131 {
 132         rcti rect;
 133         float colf[3];
 134         int showspare= 0; // XXX BIF_show_render_spare();
 135         char *str= "render text"; // XXX BIF_render_text();
 136
 137         if(str==NULL)
 138                 return;
 139
 140         rect= ar->winrct;
 141         rect.xmin= 0;
 142         rect.ymin= ar->winrct.ymax - ar->winrct.ymin - HEADER_HEIGHT;
 143         rect.xmax= ar->winrct.xmax - ar->winrct.xmin;
 144         rect.ymax= ar->winrct.ymax - ar->winrct.ymin;
 145
 146         /* clear header rect */
 147         UI_GetThemeColor3fv(TH_BACK, colf);
 148         glColor3f(colf[0]+0.1f, colf[1]+0.1f, colf[2]+0.1f);
 149         glRecti(rect.xmin, rect.ymin, rect.xmax, rect.ymax+1);
 150
 151         UI_ThemeColor(TH_TEXT_HI);
 152
 153         if(showspare) {
 154                 UI_DrawString(12, rect.ymin + 5, "(Previous)");
 155                 UI_DrawString(72, rect.ymin + 5, str);
 156         }
 157         else
 158                 UI_DrawString(12, rect.ymin + 5, str);
 159 }
 160
 161 void draw_image_info(ARegion *ar, int channels, int x, int y, char *cp, float *fp, int *zp, float *zpf)
 162 {
 163         char str[256];
 164         int ofs;
 165
 166         ED_region_pixelspace(ar);
 167
 168         ofs= sprintf(str, "X: %d Y: %d ", x, y);
 169         if(cp)
 170                 ofs+= sprintf(str+ofs, "| R: %d G: %d B: %d A: %d ", cp[0], cp[1], cp[2], cp[3]);
 171
 172         if(fp) {
 173                 if(channels==4)
 174                         ofs+= sprintf(str+ofs, "| R: %.3f G: %.3f B: %.3f A: %.3f ", fp[0], fp[1], fp[2], fp[3]);
 175                 else if(channels==1)
 176                         ofs+= sprintf(str+ofs, "| Val: %.3f ", fp[0]);
 177                 else if(channels==3)
 178                         ofs+= sprintf(str+ofs, "| R: %.3f G: %.3f B: %.3f ", fp[0], fp[1], fp[2]);
 179         }
 180
 181         if(zp)
 182                 ofs+= sprintf(str+ofs, "| Z: %.4f ", 0.5+0.5*(((float)*zp)/(float)0x7fffffff));
 183         if(zpf)
 184                 ofs+= sprintf(str+ofs, "| Z: %.3f ", *zpf);
 185
 186         glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
 187         glEnable(GL_BLEND);
 188
 189         glColor4f(.0,.0,.0,.25);
 190         glRectf(0.0, 0.0, ar->winrct.xmax - ar->winrct.xmin + 1, 30.0);
 191         glDisable(GL_BLEND);
 192
 193         glColor3ub(255, 255, 255);
 194
 195         UI_DrawString(10, 10, str);
 196 }
 197
 198 /* image drawing */
 199
 200 static void draw_image_grid(ARegion *ar, float zoomx, float zoomy)
 201 {
 202         float gridsize, gridstep= 1.0f/32.0f;
 203         float fac, blendfac;
 204         int x1, y1, x2, y2;
 205
 206         /* the image is located inside (0,0),(1, 1) as set by view2d */
 207         UI_ThemeColorShade(TH_BACK, 20);
 208
 209         UI_view2d_to_region_no_clip(&ar->v2d, 0.0f, 0.0f, &x1, &y1);
 210         UI_view2d_to_region_no_clip(&ar->v2d, 1.0f, 1.0f, &x2, &y2);
 211         glRectf(x1, y1, x2, y2);
 212
 213         /* gridsize adapted to zoom level */
 214         gridsize= 0.5f*(zoomx+zoomy);
 215         if(gridsize<=0.0f) return;
 216
 217         if(gridsize<1.0f) {
 218                 while(gridsize<1.0f) {
 219                         gridsize*= 4.0;
 220                         gridstep*= 4.0;
 221                 }
 222         }
 223         else {
 224                 while(gridsize>=4.0f) {
 225                         gridsize/= 4.0;
 226                         gridstep/= 4.0;
 227                 }
 228         }
 229
 230         /* the fine resolution level */
 231         blendfac= 0.25*gridsize - floor(0.25*gridsize);
 232         CLAMP(blendfac, 0.0, 1.0);
 233         UI_ThemeColorShade(TH_BACK, (int)(20.0*(1.0-blendfac)));
 234
 235         fac= 0.0f;
 236         glBegin(GL_LINES);
 237         while(fac<1.0f) {
 238                 glVertex2f(x1, y1*(1.0f-fac) + y2*fac);
 239                 glVertex2f(x2, y1*(1.0f-fac) + y2*fac);
 240                 glVertex2f(x1*(1.0f-fac) + x2*fac, y1);
 241                 glVertex2f(x1*(1.0f-fac) + x2*fac, y2);
 242                 fac+= gridstep;
 243         }
 244
 245         /* the large resolution level */
 246         UI_ThemeColor(TH_BACK);
 247
 248         fac= 0.0f;
 249         while(fac<1.0f) {
 250                 glVertex2f(x1, y1*(1.0f-fac) + y2*fac);
 251                 glVertex2f(x2, y1*(1.0f-fac) + y2*fac);
 252                 glVertex2f(x1*(1.0f-fac) + x2*fac, y1);
 253                 glVertex2f(x1*(1.0f-fac) + x2*fac, y2);
 254                 fac+= 4.0f*gridstep;
 255         }
 256         glEnd();
 257 }
 258
 259 static void sima_draw_alpha_backdrop(float x1, float y1, float xsize, float ysize, float zoomx, float zoomy)
 260 {
 261         GLubyte checker_stipple[32*32/8] =
 262         {
 263                 255,255,0,0,255,255,0,0,255,255,0,0,255,255,0,0, \
 264                 255,255,0,0,255,255,0,0,255,255,0,0,255,255,0,0, \
 265                 255,255,0,0,255,255,0,0,255,255,0,0,255,255,0,0, \
 266                 255,255,0,0,255,255,0,0,255,255,0,0,255,255,0,0, \
 267                 0,0,255,255,0,0,255,255,0,0,255,255,0,0,255,255, \
 268                 0,0,255,255,0,0,255,255,0,0,255,255,0,0,255,255, \
 269                 0,0,255,255,0,0,255,255,0,0,255,255,0,0,255,255, \
 270                 0,0,255,255,0,0,255,255,0,0,255,255,0,0,255,255, \
 271         };
 272
 273         glColor3ub(100, 100, 100);
 274         glRectf(x1, y1, x1 + zoomx*xsize, y1 + zoomy*ysize);
 275         glColor3ub(160, 160, 160);
 276
 277         glEnable(GL_POLYGON_STIPPLE);
 278         glPolygonStipple(checker_stipple);
 279         glRectf(x1, y1, x1 + zoomx*xsize, y1 + zoomy*ysize);
 280         glDisable(GL_POLYGON_STIPPLE);
 281 }
 282
 283 static void sima_draw_alpha_pixels(float x1, float y1, int rectx, int recty, unsigned int *recti)
 284 {
 285
 286         /* swap bytes, so alpha is most significant one, then just draw it as luminance int */
 287         if(ENDIAN_ORDER == B_ENDIAN)
 288                 glPixelStorei(GL_UNPACK_SWAP_BYTES, 1);
 289
 290         glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_LUMINANCE, GL_UNSIGNED_INT, recti);
 291         glPixelStorei(GL_UNPACK_SWAP_BYTES, 0);
 292 }
 293
 294 static void sima_draw_alpha_pixelsf(float x1, float y1, int rectx, int recty, float *rectf)
 295 {
 296         float *trectf= MEM_mallocN(rectx*recty*4, "temp");
 297         int a, b;
 298
 299         for(a= rectx*recty -1, b= 4*a+3; a>=0; a--, b-=4)
 300                 trectf[a]= rectf[b];
 301
 302         glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_LUMINANCE, GL_FLOAT, trectf);
 303         MEM_freeN(trectf);
 304         /* ogl trick below is slower... (on ATI 9600) */
 305 //      glColorMask(1, 0, 0, 0);
 306 //      glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_RGBA, GL_FLOAT, rectf+3);
 307 //      glColorMask(0, 1, 0, 0);
 308 //      glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_RGBA, GL_FLOAT, rectf+2);
 309 //      glColorMask(0, 0, 1, 0);
 310 //      glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_RGBA, GL_FLOAT, rectf+1);
 311 //      glColorMask(1, 1, 1, 1);
 312 }
 313
 314 #ifdef WITH_LCMS
 315 static void sima_draw_colorcorrected_pixels(float x1, float y1, ImBuf *ibuf)
 316 {
 317         colorcorrection_do_ibuf(ibuf, "MONOSCNR.ICM"); /* path is hardcoded here, find some place better */
 318
 319         glaDrawPixelsSafe(x1, y1, ibuf->x, ibuf->y, ibuf->x, GL_RGBA, GL_UNSIGNED_BYTE, ibuf->crect);
 320 }
 321 #endif
 322
 323 static void sima_draw_zbuf_pixels(float x1, float y1, int rectx, int recty, int *recti)
 324 {
 325         /* zbuffer values are signed, so we need to shift color range */
 326         glPixelTransferf(GL_RED_SCALE, 0.5f);
 327         glPixelTransferf(GL_GREEN_SCALE, 0.5f);
 328         glPixelTransferf(GL_BLUE_SCALE, 0.5f);
 329         glPixelTransferf(GL_RED_BIAS, 0.5f);
 330         glPixelTransferf(GL_GREEN_BIAS, 0.5f);
 331         glPixelTransferf(GL_BLUE_BIAS, 0.5f);
 332
 333         glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_LUMINANCE, GL_INT, recti);
 334
 335         glPixelTransferf(GL_RED_SCALE, 1.0f);
 336         glPixelTransferf(GL_GREEN_SCALE, 1.0f);
 337         glPixelTransferf(GL_BLUE_SCALE, 1.0f);
 338         glPixelTransferf(GL_RED_BIAS, 0.0f);
 339         glPixelTransferf(GL_GREEN_BIAS, 0.0f);
 340         glPixelTransferf(GL_BLUE_BIAS, 0.0f);
 341 }
 342
 343 static void sima_draw_zbuffloat_pixels(Scene *scene, float x1, float y1, int rectx, int recty, float *rect_float)
 344 {
 345         float bias, scale, *rectf, clipend;
 346         int a;
 347
 348         if(scene->camera && scene->camera->type==OB_CAMERA) {
 349                 bias= ((Camera *)scene->camera->data)->clipsta;
 350                 clipend= ((Camera *)scene->camera->data)->clipend;
 351                 scale= 1.0f/(clipend-bias);
 352         }
 353         else {
 354                 bias= 0.1f;
 355                 scale= 0.01f;
 356                 clipend= 100.0f;
 357         }
 358
 359         rectf= MEM_mallocN(rectx*recty*4, "temp");
 360         for(a= rectx*recty -1; a>=0; a--) {
 361                 if(rect_float[a]>clipend)
 362                         rectf[a]= 0.0f;
 363                 else if(rect_float[a]<bias)
 364                         rectf[a]= 1.0f;
 365                 else {
 366                         rectf[a]= 1.0f - (rect_float[a]-bias)*scale;
 367                         rectf[a]*= rectf[a];
 368                 }
 369         }
 370         glaDrawPixelsSafe(x1, y1, rectx, recty, rectx, GL_LUMINANCE, GL_FLOAT, rectf);
 371
 372         MEM_freeN(rectf);
 373 }
 374
 375 static void draw_image_buffer(SpaceImage *sima, ARegion *ar, Scene *scene, ImBuf *ibuf, float fx, float fy, float zoomx, float zoomy)
 376 {
 377         int x, y;
 378
 379         /* set zoom */
 380         glPixelZoom(zoomx, zoomy);
 381
 382         /* find window pixel coordinates of origin */
 383         UI_view2d_to_region_no_clip(&ar->v2d, fx, fy, &x, &y);
 384
 385         /* this part is generic image display */
 386         if(sima->flag & SI_SHOW_ALPHA) {
 387                 if(ibuf->rect)
 388                         sima_draw_alpha_pixels(x, y, ibuf->x, ibuf->y, ibuf->rect);
 389                 else if(ibuf->rect_float && ibuf->channels==4)
 390                         sima_draw_alpha_pixelsf(x, y, ibuf->x, ibuf->y, ibuf->rect_float);
 391         }
 392         else if(sima->flag & SI_SHOW_ZBUF && (ibuf->zbuf || ibuf->zbuf_float || (ibuf->channels==1))) {
 393                 if(ibuf->zbuf)
 394                         sima_draw_zbuf_pixels(x, y, ibuf->x, ibuf->y, ibuf->zbuf);
 395                 else if(ibuf->zbuf_float)
 396                         sima_draw_zbuffloat_pixels(scene, x, y, ibuf->x, ibuf->y, ibuf->zbuf_float);
 397                 else if(ibuf->channels==1)
 398                         sima_draw_zbuffloat_pixels(scene, x, y, ibuf->x, ibuf->y, ibuf->rect_float);
 399         }
 400 #ifdef WITH_LCMS
 401         else if(sima->flag & SI_COLOR_CORRECTION) {
 402                 image_verify_buffer_float(sima, ibuf);
 403
 404                 sima_draw_colorcorrected_pixels(x, y, ibuf);
 405
 406         }
 407 #endif
 408         else {
 409                 if(sima->flag & SI_USE_ALPHA) {
 410                         sima_draw_alpha_backdrop(x, y, ibuf->x, ibuf->y, zoomx, zoomy);
 411
 412                         glEnable(GL_BLEND);
 413                         glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
 414                 }
 415
 416                 /* we don't draw floats buffers directly but
 417                  * convert them, and optionally apply curves */
 418                 image_verify_buffer_float(sima, ibuf);
 419
 420                 if(ibuf->rect)
 421                         glaDrawPixelsSafe(x, y, ibuf->x, ibuf->y, ibuf->x, GL_RGBA, GL_UNSIGNED_BYTE, ibuf->rect);
 422                 /*else
 423                         glaDrawPixelsSafe(x, y, ibuf->x, ibuf->y, ibuf->x, GL_RGBA, GL_FLOAT, ibuf->rect_float);*/
 424
 425                 if(sima->flag & SI_USE_ALPHA)
 426                         glDisable(GL_BLEND);
 427         }
 428
 429         /* reset zoom */
 430         glPixelZoom(1.0f, 1.0f);
 431 }
 432
 433 static unsigned int *get_part_from_ibuf(ImBuf *ibuf, short startx, short starty, short endx, short endy)
 434 {
 435         unsigned int *rt, *rp, *rectmain;
 436         short y, heigth, len;
 437
 438         /* the right offset in rectot */
 439
 440         rt= ibuf->rect+ (starty*ibuf->x+ startx);
 441
 442         len= (endx-startx);
 443         heigth= (endy-starty);
 444
 445         rp=rectmain= MEM_mallocN(heigth*len*sizeof(int), "rect");
 446
 447         for(y=0; y<heigth; y++) {
 448                 memcpy(rp, rt, len*4);
 449                 rt+= ibuf->x;
 450                 rp+= len;
 451         }
 452         return rectmain;
 453 }
 454
 455 static void draw_image_buffer_tiled(SpaceImage *sima, ARegion *ar, Image *ima, ImBuf *ibuf, float fx, float fy, float zoomx, float zoomy)
 456 {
 457         unsigned int *rect;
 458         int dx, dy, sx, sy, x, y;
 459
 460         /* verify valid values, just leave this a while */
 461         if(ima->xrep<1) return;
 462         if(ima->yrep<1) return;
 463
 464         glPixelZoom(zoomx, zoomy);
 465
 466         if(sima->curtile >= ima->xrep*ima->yrep)
 467                 sima->curtile = ima->xrep*ima->yrep - 1;
 468
 469         /* create char buffer from float if needed */
 470         image_verify_buffer_float(sima, ibuf);
 471
 472         /* retrieve part of image buffer */
 473         dx= ibuf->x/ima->xrep;
 474         dy= ibuf->y/ima->yrep;
 475         sx= (sima->curtile % ima->xrep)*dx;
 476         sy= (sima->curtile / ima->xrep)*dy;
 477         rect= get_part_from_ibuf(ibuf, sx, sy, sx+dx, sy+dy);
 478
 479         /* draw repeated */
 480         for(sy=0; sy+dy<=ibuf->y; sy+= dy) {
 481                 for(sx=0; sx+dx<=ibuf->x; sx+= dx) {
 482                         UI_view2d_to_region_no_clip(&ar->v2d, fx + (float)sx/(float)ibuf->x, fy + (float)sy/(float)ibuf->y, &x, &y);
 483
 484                         glaDrawPixelsSafe(x, y, dx, dy, dx, GL_RGBA, GL_UNSIGNED_BYTE, rect);
 485                 }
 486         }
 487
 488         glPixelZoom(1.0f, 1.0f);
 489
 490         MEM_freeN(rect);
 491 }
 492
 493 static void draw_image_buffer_repeated(SpaceImage *sima, ARegion *ar, Scene *scene, Image *ima, ImBuf *ibuf, float zoomx, float zoomy)
 494 {
 495         float x, y;
 496         double time_current;
 497
 498         time_current = PIL_check_seconds_timer();
 499
 500         for(x=floor(ar->v2d.cur.xmin); x<ar->v2d.cur.xmax; x += 1.0f) {
 501                 for(y=floor(ar->v2d.cur.ymin); y<ar->v2d.cur.ymax; y += 1.0f) {
 502                         if(ima && (ima->tpageflag & IMA_TILES))
 503                                 draw_image_buffer_tiled(sima, ar, ima, ibuf, x, y, zoomx, zoomy);
 504                         else
 505                                 draw_image_buffer(sima, ar, scene, ibuf, x, y, zoomx, zoomy);
 506
 507                         /* only draw until running out of time */
 508                         if((PIL_check_seconds_timer() - time_current) > 0.25)
 509                                 return;
 510                 }
 511         }
 512 }
 513
 514 /* draw uv edit */
 515
 516 /* draw grease pencil */
 517
 518 static void draw_image_grease_pencil(SpaceImage *sima, ImBuf *ibuf)
 519 {
 520         /* XXX bring back */
 521         /* draw grease-pencil ('image' strokes) */
 522         if (sima->flag & SI_DISPGP)
 523                 ; // XXX draw_gpencil_2dimage(sa, ibuf);
 524
 525 #if 0
 526         mywinset(sa->win);      /* restore scissor after gla call... */
 527         wmOrtho2(-0.375, sa->winx-0.375, -0.375, sa->winy-0.375);
 528 #endif
 529
 530         /* draw grease-pencil (screen strokes) */
 531         if (sima->flag & SI_DISPGP)
 532                 ; // XXX draw_gpencil_2dview(sa, NULL);
 533 }
 534
 535 /* XXX becomes WM paint cursor */
 536 #if 0
 537 static void draw_image_view_tool(Scene *scene)
 538 {
 539         ToolSettings *settings= scene->toolsettings;
 540         Brush *brush= settings->imapaint.brush;
 541         short mval[2];
 542         float radius;
 543         int draw= 0;
 544
 545         if(brush) {
 546                 if(settings->imapaint.flag & IMAGEPAINT_DRAWING) {
 547                         if(settings->imapaint.flag & IMAGEPAINT_DRAW_TOOL_DRAWING)
 548                                 draw= 1;
 549                 }
 550                 else if(settings->imapaint.flag & IMAGEPAINT_DRAW_TOOL)
 551                         draw= 1;
 552
 553                 if(draw) {
 554                         getmouseco_areawin(mval);
 555
 556                         radius= brush->size*G.sima->zoom/2;
 557                         fdrawXORcirc(mval[0], mval[1], radius);
 558
 559                         if (brush->innerradius != 1.0) {
 560                                 radius *= brush->innerradius;
 561                                 fdrawXORcirc(mval[0], mval[1], radius);
 562                         }
 563                 }
 564         }
 565 }
 566 #endif
 567
 568 static unsigned char *get_alpha_clone_image(Scene *scene, int *width, int *height)
 569 {
 570         Brush *brush = scene->toolsettings->imapaint.brush;
 571         ImBuf *ibuf;
 572         unsigned int size, alpha;
 573         unsigned char *rect, *cp;
 574
 575         if(!brush || !brush->clone.image)
 576                 return NULL;
 577
 578         ibuf= BKE_image_get_ibuf(brush->clone.image, NULL);
 579
 580         if(!ibuf || !ibuf->rect)
 581                 return NULL;
 582
 583         rect= MEM_dupallocN(ibuf->rect);
 584         if(!rect)
 585                 return NULL;
 586
 587         *width= ibuf->x;
 588         *height= ibuf->y;
 589
 590         size= (*width)*(*height);
 591         alpha= (unsigned char)255*brush->clone.alpha;
 592         cp= rect;
 593
 594         while(size-- > 0) {
 595                 cp[3]= alpha;
 596                 cp += 4;
 597         }
 598
 599         return rect;
 600 }
 601
 602 static void draw_image_paint_helpers(SpaceImage *sima, ARegion *ar, Scene *scene, float zoomx, float zoomy)
 603 {
 604         Brush *brush;
 605         int x, y, w, h;
 606         unsigned char *clonerect;
 607
 608         brush= scene->toolsettings->imapaint.brush;
 609
 610         if(brush && (scene->toolsettings->imapaint.tool == PAINT_TOOL_CLONE)) {
 611                 /* this is not very efficient, but glDrawPixels doesn't allow
 612                    drawing with alpha */
 613                 clonerect= get_alpha_clone_image(scene, &w, &h);
 614
 615                 if(clonerect) {
 616                         UI_view2d_to_region_no_clip(&ar->v2d, brush->clone.offset[0], brush->clone.offset[1], &x, &y);
 617
 618                         glPixelZoom(zoomx, zoomy);
 619
 620                         glEnable(GL_BLEND);
 621                         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 622                         glaDrawPixelsSafe(x, y, w, h, w, GL_RGBA, GL_UNSIGNED_BYTE, clonerect);
 623                         glDisable(GL_BLEND);
 624
 625                         glPixelZoom(1.0, 1.0);
 626
 627                         MEM_freeN(clonerect);
 628                 }
 629         }
 630 }
 631
 632 /* draw main image area */
 633
 634 void draw_image_main(SpaceImage *sima, ARegion *ar, Scene *scene)
 635 {
 636         Image *ima;
 637         ImBuf *ibuf;
 638         float zoomx, zoomy;
 639         int show_viewer, show_render;
 640
 641         /* XXX can we do this in refresh? */
 642 #if 0
 643         what_image(sima);
 644
 645         if(sima->image) {
 646                 ED_image_aspect(sima->image, &xuser_asp, &yuser_asp);
 647
 648                 /* UGLY hack? until now iusers worked fine... but for flipbook viewer we need this */
 649                 if(sima->image->type==IMA_TYPE_COMPOSITE) {
 650                         ImageUser *iuser= ntree_get_active_iuser(scene->nodetree);
 651                         if(iuser) {
 652                                 BKE_image_user_calc_imanr(iuser, scene->r.cfra, 0);
 653                                 sima->iuser= *iuser;
 654                         }
 655                 }
 656                 /* and we check for spare */
 657                 ibuf= ED_space_image_buffer(sima);
 658         }
 659 #endif
 660
 661         /* put scene context variable in iuser */
 662         sima->iuser.scene= scene;
 663         /* retrieve the image and information about it */
 664         ima= ED_space_image(sima);
 665         ibuf= ED_space_image_buffer(sima);
 666         ED_space_image_zoom(sima, ar, &zoomx, &zoomy);
 667
 668         show_viewer= (ima && ima->source == IMA_SRC_VIEWER);
 669         show_render= (show_viewer && ima->type == IMA_TYPE_R_RESULT);
 670
 671         /* draw the image or grid */
 672         if(ibuf==NULL)
 673                 draw_image_grid(ar, zoomx, zoomy);
 674         else if(sima->flag & SI_DRAW_TILE)
 675                 draw_image_buffer_repeated(sima, ar, scene, ima, ibuf, zoomx, zoomy);
 676         else if(ima && (ima->tpageflag & IMA_TILES))
 677                 draw_image_buffer_tiled(sima, ar, ima, ibuf, 0.0f, 0.0, zoomx, zoomy);
 678         else
 679                 draw_image_buffer(sima, ar, scene, ibuf, 0.0f, 0.0f, zoomx, zoomy);
 680
 681         /* grease pencil */
 682         draw_image_grease_pencil(sima, ibuf);
 683
 684         /* paint helpers */
 685         draw_image_paint_helpers(sima, ar, scene, zoomx, zoomy);
 686
 687         /* render info */
 688         if(ibuf && show_render)
 689                 draw_render_info(sima, ar);
 690
 691         /* XXX integrate this code */
 692 #if 0
 693         if(ibuf) {
 694                 float xoffs=0.0f, yoffs= 0.0f;
 695
 696                 if(image_preview_active(sa, &xim, &yim)) {
 697                         xoffs= scene->r.disprect.xmin;
 698                         yoffs= scene->r.disprect.ymin;
 699                         glColor3ub(0,0,0);
 700                         calc_image_view(sima, 'f');
 701                         myortho2(G.v2d->cur.xmin, G.v2d->cur.xmax, G.v2d->cur.ymin, G.v2d->cur.ymax);
 702                         glRectf(0.0f, 0.0f, 1.0f, 1.0f);
 703                         glLoadIdentity();
 704                 }
 705         }
 706 #endif
 707 }
 708