source/blender/editors/space_sequencer/sequencer_draw.c

   1 /*
   2  * ***** BEGIN GPL LICENSE BLOCK *****
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License
   6  * as published by the Free Software Foundation; either version 2
   7  * of the License, or (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software Foundation,
  16  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  17  *
  18  * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
  19  * All rights reserved.
  20  *
  21  * Contributor(s): Blender Foundation, 2003-2009
  22  *
  23  * ***** END GPL LICENSE BLOCK *****
  24  */
  25
  26 /** \file blender/editors/space_sequencer/sequencer_draw.c
  27  *  \ingroup spseq
  28  */
  29
  30
  31 #include <string.h>
  32 #include <math.h>
  33
  34 #include "MEM_guardedalloc.h"
  35
  36 #include "BLI_blenlib.h"
  37 #include "BLI_math.h"
  38 #include "BLI_utildefines.h"
  39
  40 #include "IMB_imbuf_types.h"
  41
  42 #include "DNA_scene_types.h"
  43 #include "DNA_mask_types.h"
  44 #include "DNA_screen_types.h"
  45 #include "DNA_space_types.h"
  46 #include "DNA_userdef_types.h"
  47 #include "DNA_sound_types.h"
  48
  49 #include "BKE_context.h"
  50 #include "BKE_global.h"
  51 #include "BKE_sequencer.h"
  52
  53 #include "BKE_sound.h"
  54
  55 #include "IMB_colormanagement.h"
  56 #include "IMB_imbuf.h"
  57
  58 #include "BIF_gl.h"
  59 #include "BIF_glutil.h"
  60
  61 #include "ED_anim_api.h"
  62 #include "ED_gpencil.h"
  63 #include "ED_markers.h"
  64 #include "ED_mask.h"
  65 #include "ED_sequencer.h"
  66 #include "ED_types.h"
  67 #include "ED_space_api.h"
  68
  69 #include "UI_interface.h"
  70 #include "UI_resources.h"
  71 #include "UI_view2d.h"
  72
  73 #include "WM_api.h"
  74 #include "WM_types.h"
  75
  76 /* own include */
  77 #include "sequencer_intern.h"
  78
  79
  80 #define SEQ_LEFTHANDLE   1
  81 #define SEQ_RIGHTHANDLE  2
  82
  83 #define SEQ_HANDLE_SIZE_MIN  7.0f
  84 #define SEQ_HANDLE_SIZE_MAX 40.0f
  85
  86
  87 /* Note, Don't use SEQ_BEGIN/SEQ_END while drawing!
  88  * it messes up transform, - Campbell */
  89 static void draw_shadedstrip(Sequence *seq, unsigned char col[3], float x1, float y1, float x2, float y2);
  90
  91 static void get_seq_color3ubv(Scene *curscene, Sequence *seq, unsigned char col[3])
  92 {
  93         unsigned char blendcol[3];
  94         SolidColorVars *colvars = (SolidColorVars *)seq->effectdata;
  95
  96         switch (seq->type) {
  97                 case SEQ_TYPE_IMAGE:
  98                         UI_GetThemeColor3ubv(TH_SEQ_IMAGE, col);
  99                         break;
 100
 101                 case SEQ_TYPE_META:
 102                         UI_GetThemeColor3ubv(TH_SEQ_META, col);
 103                         break;
 104
 105                 case SEQ_TYPE_MOVIE:
 106                         UI_GetThemeColor3ubv(TH_SEQ_MOVIE, col);
 107                         break;
 108
 109                 case SEQ_TYPE_MOVIECLIP:
 110                         UI_GetThemeColor3ubv(TH_SEQ_MOVIECLIP, col);
 111                         break;
 112
 113                 case SEQ_TYPE_MASK:
 114                         UI_GetThemeColor3ubv(TH_SEQ_MASK, col); /* TODO */
 115                         break;
 116
 117                 case SEQ_TYPE_SCENE:
 118                         UI_GetThemeColor3ubv(TH_SEQ_SCENE, col);
 119
 120                         if (seq->scene == curscene) {
 121                                 UI_GetColorPtrShade3ubv(col, col, 20);
 122                         }
 123                         break;
 124
 125                 /* transitions */
 126                 case SEQ_TYPE_CROSS:
 127                 case SEQ_TYPE_GAMCROSS:
 128                 case SEQ_TYPE_WIPE:
 129                         UI_GetThemeColor3ubv(TH_SEQ_TRANSITION, col);
 130
 131                         /* slightly offset hue to distinguish different effects */
 132                         if (seq->type == SEQ_TYPE_CROSS)    rgb_byte_set_hue_float_offset(col, 0.04);
 133                         if (seq->type == SEQ_TYPE_GAMCROSS) rgb_byte_set_hue_float_offset(col, 0.08);
 134                         if (seq->type == SEQ_TYPE_WIPE)     rgb_byte_set_hue_float_offset(col, 0.12);
 135                         break;
 136
 137                 /* effects */
 138                 case SEQ_TYPE_TRANSFORM:
 139                 case SEQ_TYPE_SPEED:
 140                 case SEQ_TYPE_ADD:
 141                 case SEQ_TYPE_SUB:
 142                 case SEQ_TYPE_MUL:
 143                 case SEQ_TYPE_ALPHAOVER:
 144                 case SEQ_TYPE_ALPHAUNDER:
 145                 case SEQ_TYPE_OVERDROP:
 146                 case SEQ_TYPE_GLOW:
 147                 case SEQ_TYPE_MULTICAM:
 148                 case SEQ_TYPE_ADJUSTMENT:
 149                         UI_GetThemeColor3ubv(TH_SEQ_EFFECT, col);
 150
 151                         /* slightly offset hue to distinguish different effects */
 152                         if      (seq->type == SEQ_TYPE_ADD)        rgb_byte_set_hue_float_offset(col, 0.04);
 153                         else if (seq->type == SEQ_TYPE_SUB)        rgb_byte_set_hue_float_offset(col, 0.08);
 154                         else if (seq->type == SEQ_TYPE_MUL)        rgb_byte_set_hue_float_offset(col, 0.12);
 155                         else if (seq->type == SEQ_TYPE_ALPHAOVER)  rgb_byte_set_hue_float_offset(col, 0.16);
 156                         else if (seq->type == SEQ_TYPE_ALPHAUNDER) rgb_byte_set_hue_float_offset(col, 0.20);
 157                         else if (seq->type == SEQ_TYPE_OVERDROP)   rgb_byte_set_hue_float_offset(col, 0.24);
 158                         else if (seq->type == SEQ_TYPE_GLOW)       rgb_byte_set_hue_float_offset(col, 0.28);
 159                         else if (seq->type == SEQ_TYPE_TRANSFORM)  rgb_byte_set_hue_float_offset(col, 0.36);
 160                         else if (seq->type == SEQ_TYPE_MULTICAM)   rgb_byte_set_hue_float_offset(col, 0.32);
 161                         else if (seq->type == SEQ_TYPE_ADJUSTMENT) rgb_byte_set_hue_float_offset(col, 0.40);
 162                         break;
 163
 164                 case SEQ_TYPE_COLOR:
 165                         if (colvars->col) {
 166                                 rgb_float_to_uchar(col, colvars->col);
 167                         }
 168                         else {
 169                                 col[0] = col[1] = col[2] = 128;
 170                         }
 171                         break;
 172
 173                 case SEQ_TYPE_SOUND_RAM:
 174                         UI_GetThemeColor3ubv(TH_SEQ_AUDIO, col);
 175                         blendcol[0] = blendcol[1] = blendcol[2] = 128;
 176                         if (seq->flag & SEQ_MUTE) UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.5, 20);
 177                         break;
 178
 179                 default:
 180                         col[0] = 10; col[1] = 255; col[2] = 40;
 181         }
 182 }
 183
 184 static void drawseqwave(Scene *scene, Sequence *seq, float x1, float y1, float x2, float y2, float stepsize)
 185 {
 186         /*
 187          * x1 is the starting x value to draw the wave,
 188          * x2 the end x value, same for y1 and y2
 189          * stepsize is width of a pixel.
 190          */
 191         if (seq->flag & SEQ_AUDIO_DRAW_WAVEFORM) {
 192                 int i, j, pos;
 193                 int length = floor((x2 - x1) / stepsize) + 1;
 194                 float ymid = (y1 + y2) / 2;
 195                 float yscale = (y2 - y1) / 2;
 196                 float samplestep;
 197                 float startsample, endsample;
 198                 float value;
 199
 200                 SoundWaveform *waveform;
 201
 202                 if (!seq->sound->waveform)
 203                         sound_read_waveform(seq->sound);
 204
 205                 if (!seq->sound->waveform)
 206                         return;  /* zero length sound */
 207
 208                 waveform = seq->sound->waveform;
 209
 210                 if (!waveform)
 211                         return;
 212
 213                 startsample = floor((seq->startofs + seq->anim_startofs) / FPS * SOUND_WAVE_SAMPLES_PER_SECOND);
 214                 endsample = ceil((seq->startofs + seq->anim_startofs + seq->enddisp - seq->startdisp) / FPS * SOUND_WAVE_SAMPLES_PER_SECOND);
 215                 samplestep = (endsample - startsample) * stepsize / (x2 - x1);
 216
 217                 if (length > floor((waveform->length - startsample) / samplestep))
 218                         length = floor((waveform->length - startsample) / samplestep);
 219
 220                 glBegin(GL_LINE_STRIP);
 221                 for (i = 0; i < length; i++) {
 222                         pos = startsample + i * samplestep;
 223
 224                         value = waveform->data[pos * 3];
 225
 226                         for (j = pos + 1; (j < waveform->length) && (j < pos + samplestep); j++) {
 227                                 if (value > waveform->data[j * 3])
 228                                         value = waveform->data[j * 3];
 229                         }
 230
 231                         glVertex2f(x1 + i * stepsize, ymid + value * yscale);
 232                 }
 233                 glEnd();
 234
 235                 glBegin(GL_LINE_STRIP);
 236                 for (i = 0; i < length; i++) {
 237                         pos = startsample + i * samplestep;
 238
 239                         value = waveform->data[pos * 3 + 1];
 240
 241                         for (j = pos + 1; (j < waveform->length) && (j < pos + samplestep); j++) {
 242                                 if (value < waveform->data[j * 3 + 1])
 243                                         value = waveform->data[j * 3 + 1];
 244                         }
 245
 246                         glVertex2f(x1 + i * stepsize, ymid + value * yscale);
 247                 }
 248                 glEnd();
 249         }
 250 }
 251
 252 static void drawmeta_stipple(int value)
 253 {
 254         if (value) {
 255                 glEnable(GL_POLYGON_STIPPLE);
 256                 glPolygonStipple(stipple_halftone);
 257
 258                 glEnable(GL_LINE_STIPPLE);
 259                 glLineStipple(1, 0x8888);
 260         }
 261         else {
 262                 glDisable(GL_POLYGON_STIPPLE);
 263                 glDisable(GL_LINE_STIPPLE);
 264         }
 265 }
 266
 267 static void drawmeta_contents(Scene *scene, Sequence *seqm, float x1, float y1, float x2, float y2)
 268 {
 269         /* note: this used to use SEQ_BEGIN/SEQ_END, but it messes up the
 270          * seq->depth value, (needed by transform when doing overlap checks)
 271          * so for now, just use the meta's immediate children, could be fixed but
 272          * its only drawing - campbell */
 273         Sequence *seq;
 274         unsigned char col[4];
 275
 276         int chan_min = MAXSEQ;
 277         int chan_max = 0;
 278         int chan_range = 0;
 279         float draw_range = y2 - y1;
 280         float draw_height;
 281
 282         glEnable(GL_BLEND);
 283         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 284
 285         if (seqm->flag & SEQ_MUTE)
 286                 drawmeta_stipple(1);
 287
 288         for (seq = seqm->seqbase.first; seq; seq = seq->next) {
 289                 chan_min = min_ii(chan_min, seq->machine);
 290                 chan_max = max_ii(chan_max, seq->machine);
 291         }
 292
 293         chan_range = (chan_max - chan_min) + 1;
 294         draw_height = draw_range / chan_range;
 295
 296         col[3] = 196; /* alpha, used for all meta children */
 297
 298         for (seq = seqm->seqbase.first; seq; seq = seq->next) {
 299                 if ((seq->startdisp > x2 || seq->enddisp < x1) == 0) {
 300                         float y_chan = (seq->machine - chan_min) / (float)(chan_range) * draw_range;
 301                         float x1_chan = seq->startdisp;
 302                         float x2_chan = seq->enddisp;
 303                         float y1_chan, y2_chan;
 304
 305                         if ((seqm->flag & SEQ_MUTE) == 0 && (seq->flag & SEQ_MUTE))
 306                                 drawmeta_stipple(1);
 307
 308                         get_seq_color3ubv(scene, seq, col);
 309
 310                         glColor4ubv(col);
 311
 312                         /* clamp within parent sequence strip bounds */
 313                         if (x1_chan < x1) x1_chan = x1;
 314                         if (x2_chan > x2) x2_chan = x2;
 315
 316                         y1_chan = y1 + y_chan + (draw_height * SEQ_STRIP_OFSBOTTOM);
 317                         y2_chan = y1 + y_chan + (draw_height * SEQ_STRIP_OFSTOP);
 318
 319                         glRectf(x1_chan,  y1_chan, x2_chan,  y2_chan);
 320
 321                         UI_GetColorPtrShade3ubv(col, col, -30);
 322                         glColor4ubv(col);
 323                         fdrawbox(x1_chan,  y1_chan, x2_chan,  y2_chan);
 324
 325                         if ((seqm->flag & SEQ_MUTE) == 0 && (seq->flag & SEQ_MUTE))
 326                                 drawmeta_stipple(0);
 327                 }
 328         }
 329
 330         if (seqm->flag & SEQ_MUTE)
 331                 drawmeta_stipple(0);
 332
 333         glDisable(GL_BLEND);
 334 }
 335
 336 /* clamp handles to defined size in pixel space */
 337 static float draw_seq_handle_size_get_clamped(Sequence *seq, const float pixelx)
 338 {
 339         const float minhandle = pixelx * SEQ_HANDLE_SIZE_MIN;
 340         const float maxhandle = pixelx * SEQ_HANDLE_SIZE_MAX;
 341         return CLAMPIS(seq->handsize, minhandle, maxhandle);
 342 }
 343
 344 /* draw a handle, for each end of a sequence strip */
 345 static void draw_seq_handle(View2D *v2d, Sequence *seq, const float handsize_clamped, const short direction)
 346 {
 347         float v1[2], v2[2], v3[2], rx1 = 0, rx2 = 0; //for triangles and rect
 348         float x1, x2, y1, y2;
 349         char numstr[32];
 350         unsigned int whichsel = 0;
 351
 352         x1 = seq->startdisp;
 353         x2 = seq->enddisp;
 354
 355         y1 = seq->machine + SEQ_STRIP_OFSBOTTOM;
 356         y2 = seq->machine + SEQ_STRIP_OFSTOP;
 357
 358         /* set up co-ordinates/dimensions for either left or right handle */
 359         if (direction == SEQ_LEFTHANDLE) {
 360                 rx1 = x1;
 361                 rx2 = x1 + handsize_clamped * 0.75f;
 362
 363                 v1[0] = x1 + handsize_clamped / 4; v1[1] = y1 + ( ((y1 + y2) / 2.0f - y1) / 2);
 364                 v2[0] = x1 + handsize_clamped / 4; v2[1] = y2 - ( ((y1 + y2) / 2.0f - y1) / 2);
 365                 v3[0] = v2[0] + handsize_clamped / 4; v3[1] = (y1 + y2) / 2.0f;
 366
 367                 whichsel = SEQ_LEFTSEL;
 368         }
 369         else if (direction == SEQ_RIGHTHANDLE) {
 370                 rx1 = x2 - handsize_clamped * 0.75f;
 371                 rx2 = x2;
 372
 373                 v1[0] = x2 - handsize_clamped / 4; v1[1] = y1 + ( ((y1 + y2) / 2.0f - y1) / 2);
 374                 v2[0] = x2 - handsize_clamped / 4; v2[1] = y2 - ( ((y1 + y2) / 2.0f - y1) / 2);
 375                 v3[0] = v2[0] - handsize_clamped / 4; v3[1] = (y1 + y2) / 2.0f;
 376
 377                 whichsel = SEQ_RIGHTSEL;
 378         }
 379
 380         /* draw! */
 381         if (seq->type < SEQ_TYPE_EFFECT ||
 382             BKE_sequence_effect_get_num_inputs(seq->type) == 0)
 383         {
 384                 glEnable(GL_BLEND);
 385
 386                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 387
 388                 if (seq->flag & whichsel) glColor4ub(0, 0, 0, 80);
 389                 else if (seq->flag & SELECT) glColor4ub(255, 255, 255, 30);
 390                 else glColor4ub(0, 0, 0, 22);
 391
 392                 glRectf(rx1, y1, rx2, y2);
 393
 394                 if (seq->flag & whichsel) glColor4ub(255, 255, 255, 200);
 395                 else glColor4ub(0, 0, 0, 50);
 396
 397                 glEnable(GL_POLYGON_SMOOTH);
 398                 glBegin(GL_TRIANGLES);
 399                 glVertex2fv(v1); glVertex2fv(v2); glVertex2fv(v3);
 400                 glEnd();
 401
 402                 glDisable(GL_POLYGON_SMOOTH);
 403                 glDisable(GL_BLEND);
 404         }
 405
 406         if (G.moving || (seq->flag & whichsel)) {
 407                 const char col[4] = {255, 255, 255, 255};
 408                 if (direction == SEQ_LEFTHANDLE) {
 409                         BLI_snprintf(numstr, sizeof(numstr), "%d", seq->startdisp);
 410                         x1 = rx1;
 411                         y1 -= 0.45f;
 412                 }
 413                 else {
 414                         BLI_snprintf(numstr, sizeof(numstr), "%d", seq->enddisp - 1);
 415                         x1 = x2 - handsize_clamped * 0.75f;
 416                         y1 = y2 + 0.05f;
 417                 }
 418                 UI_view2d_text_cache_add(v2d, x1, y1, numstr, col);
 419         }
 420 }
 421
 422 static void draw_seq_extensions(Scene *scene, ARegion *ar, Sequence *seq)
 423 {
 424         float x1, x2, y1, y2, pixely, a;
 425         unsigned char col[3], blendcol[3];
 426         View2D *v2d = &ar->v2d;
 427
 428         if (seq->type >= SEQ_TYPE_EFFECT) return;
 429
 430         x1 = seq->startdisp;
 431         x2 = seq->enddisp;
 432
 433         y1 = seq->machine + SEQ_STRIP_OFSBOTTOM;
 434         y2 = seq->machine + SEQ_STRIP_OFSTOP;
 435
 436         pixely = BLI_rctf_size_y(&v2d->cur) / BLI_rcti_size_y(&v2d->mask);
 437
 438         if (pixely <= 0) return;  /* can happen when the view is split/resized */
 439
 440         blendcol[0] = blendcol[1] = blendcol[2] = 120;
 441
 442         if (seq->startofs) {
 443                 glEnable(GL_BLEND);
 444                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 445
 446                 get_seq_color3ubv(scene, seq, col);
 447
 448                 if (seq->flag & SELECT) {
 449                         UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.3, -40);
 450                         glColor4ub(col[0], col[1], col[2], 170);
 451                 }
 452                 else {
 453                         UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.6, 0);
 454                         glColor4ub(col[0], col[1], col[2], 110);
 455                 }
 456
 457                 glRectf((float)(seq->start), y1 - SEQ_STRIP_OFSBOTTOM, x1, y1);
 458
 459                 if (seq->flag & SELECT) glColor4ub(col[0], col[1], col[2], 255);
 460                 else glColor4ub(col[0], col[1], col[2], 160);
 461
 462                 fdrawbox((float)(seq->start), y1 - SEQ_STRIP_OFSBOTTOM, x1, y1);  //outline
 463
 464                 glDisable(GL_BLEND);
 465         }
 466         if (seq->endofs) {
 467                 glEnable(GL_BLEND);
 468                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 469
 470                 get_seq_color3ubv(scene, seq, col);
 471
 472                 if (seq->flag & SELECT) {
 473                         UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.3, -40);
 474                         glColor4ub(col[0], col[1], col[2], 170);
 475                 }
 476                 else {
 477                         UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.6, 0);
 478                         glColor4ub(col[0], col[1], col[2], 110);
 479                 }
 480
 481                 glRectf(x2, y2, (float)(seq->start + seq->len), y2 + SEQ_STRIP_OFSBOTTOM);
 482
 483                 if (seq->flag & SELECT) glColor4ub(col[0], col[1], col[2], 255);
 484                 else glColor4ub(col[0], col[1], col[2], 160);
 485
 486                 fdrawbox(x2, y2, (float)(seq->start + seq->len), y2 + SEQ_STRIP_OFSBOTTOM); //outline
 487
 488                 glDisable(GL_BLEND);
 489         }
 490         if (seq->startstill) {
 491                 get_seq_color3ubv(scene, seq, col);
 492                 UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.75, 40);
 493                 glColor3ubv((GLubyte *)col);
 494
 495                 draw_shadedstrip(seq, col, x1, y1, (float)(seq->start), y2);
 496
 497                 /* feint pinstripes, helps see exactly which is extended and which isn't,
 498                  * especially when the extension is very small */
 499                 if (seq->flag & SELECT) UI_GetColorPtrBlendShade3ubv(col, col, col, 0.0, 24);
 500                 else UI_GetColorPtrShade3ubv(col, col, -16);
 501
 502                 glColor3ubv((GLubyte *)col);
 503
 504                 for (a = y1; a < y2; a += pixely * 2.0f) {
 505                         fdrawline(x1,  a,  (float)(seq->start),  a);
 506                 }
 507         }
 508         if (seq->endstill) {
 509                 get_seq_color3ubv(scene, seq, col);
 510                 UI_GetColorPtrBlendShade3ubv(col, blendcol, col, 0.75, 40);
 511                 glColor3ubv((GLubyte *)col);
 512
 513                 draw_shadedstrip(seq, col, (float)(seq->start + seq->len), y1, x2, y2);
 514
 515                 /* feint pinstripes, helps see exactly which is extended and which isn't,
 516                  * especially when the extension is very small */
 517                 if (seq->flag & SELECT) UI_GetColorPtrShade3ubv(col, col, 24);
 518                 else UI_GetColorPtrShade3ubv(col, col, -16);
 519
 520                 glColor3ubv((GLubyte *)col);
 521
 522                 for (a = y1; a < y2; a += pixely * 2.0f) {
 523                         fdrawline((float)(seq->start + seq->len),  a,  x2,  a);
 524                 }
 525         }
 526 }
 527
 528 /* draw info text on a sequence strip */
 529 static void draw_seq_text(View2D *v2d, Sequence *seq, float x1, float x2, float y1, float y2, const unsigned char background_col[3])
 530 {
 531         rctf rect;
 532         char str[32 + FILE_MAX];
 533         const char *name = seq->name + 2;
 534         char col[4];
 535
 536         /* note, all strings should include 'name' */
 537         if (name[0] == '\0')
 538                 name = BKE_sequence_give_name(seq);
 539
 540         if (seq->type == SEQ_TYPE_META || seq->type == SEQ_TYPE_ADJUSTMENT) {
 541                 BLI_snprintf(str, sizeof(str), "%s | %d", name, seq->len);
 542         }
 543         else if (seq->type == SEQ_TYPE_SCENE) {
 544                 if (seq->scene) {
 545                         if (seq->scene_camera) {
 546                                 BLI_snprintf(str, sizeof(str), "%s: %s (%s) | %d",
 547                                              name, seq->scene->id.name + 2, ((ID *)seq->scene_camera)->name + 2, seq->len);
 548                         }
 549                         else {
 550                                 BLI_snprintf(str, sizeof(str), "%s: %s | %d",
 551                                              name, seq->scene->id.name + 2, seq->len);
 552                         }
 553                 }
 554                 else {
 555                         BLI_snprintf(str, sizeof(str), "%s | %d",
 556                                      name, seq->len);
 557                 }
 558         }
 559         else if (seq->type == SEQ_TYPE_MOVIECLIP) {
 560                 if (seq->clip && strcmp(name, seq->clip->id.name + 2) != 0) {
 561                         BLI_snprintf(str, sizeof(str), "%s: %s | %d",
 562                                      name, seq->clip->id.name + 2, seq->len);
 563                 }
 564                 else {
 565                         BLI_snprintf(str, sizeof(str), "%s | %d",
 566                                      name, seq->len);
 567                 }
 568         }
 569         else if (seq->type == SEQ_TYPE_MASK) {
 570                 if (seq->mask && strcmp(name, seq->mask->id.name + 2) != 0) {
 571                         BLI_snprintf(str, sizeof(str), "%s: %s | %d",
 572                                      name, seq->mask->id.name + 2, seq->len);
 573                 }
 574                 else {
 575                         BLI_snprintf(str, sizeof(str), "%s | %d",
 576                                      name, seq->len);
 577                 }
 578         }
 579         else if (seq->type == SEQ_TYPE_MULTICAM) {
 580                 BLI_snprintf(str, sizeof(str), "Cam %s: %d",
 581                              name, seq->multicam_source);
 582         }
 583         else if (seq->type == SEQ_TYPE_IMAGE) {
 584                 BLI_snprintf(str, sizeof(str), "%s: %s%s | %d",
 585                              name, seq->strip->dir, seq->strip->stripdata->name, seq->len);
 586         }
 587         else if (seq->type & SEQ_TYPE_EFFECT) {
 588                 BLI_snprintf(str, sizeof(str), "%s | %d",
 589                                      name, seq->len);
 590         }
 591         else if (seq->type == SEQ_TYPE_SOUND_RAM) {
 592                 if (seq->sound)
 593                         BLI_snprintf(str, sizeof(str), "%s: %s | %d",
 594                                      name, seq->sound->name, seq->len);
 595                 else
 596                         BLI_snprintf(str, sizeof(str), "%s | %d",
 597                                      name, seq->len);
 598         }
 599         else if (seq->type == SEQ_TYPE_MOVIE) {
 600                 BLI_snprintf(str, sizeof(str), "%s: %s%s | %d",
 601                              name, seq->strip->dir, seq->strip->stripdata->name, seq->len);
 602         }
 603
 604         if (seq->flag & SELECT) {
 605                 col[0] = col[1] = col[2] = 255;
 606         }
 607         else if ((((int)background_col[0] + (int)background_col[1] + (int)background_col[2]) / 3) < 50) {
 608                 col[0] = col[1] = col[2] = 80; /* use lighter text color for dark background */
 609         }
 610         else {
 611                 col[0] = col[1] = col[2] = 0;
 612         }
 613         col[3] = 255;
 614
 615         rect.xmin = x1;
 616         rect.ymin = y1;
 617         rect.xmax = x2;
 618         rect.ymax = y2;
 619         UI_view2d_text_cache_rectf(v2d, &rect, str, col);
 620 }
 621
 622 /* draws a shaded strip, made from gradient + flat color + gradient */
 623 static void draw_shadedstrip(Sequence *seq, unsigned char col[3], float x1, float y1, float x2, float y2)
 624 {
 625         float ymid1, ymid2;
 626
 627         if (seq->flag & SEQ_MUTE) {
 628                 glEnable(GL_POLYGON_STIPPLE);
 629                 glPolygonStipple(stipple_halftone);
 630         }
 631
 632         ymid1 = (y2 - y1) * 0.25f + y1;
 633         ymid2 = (y2 - y1) * 0.65f + y1;
 634
 635         glShadeModel(GL_SMOOTH);
 636         glBegin(GL_QUADS);
 637
 638         if (seq->flag & SEQ_INVALID_EFFECT) { col[0] = 255; col[1] = 0; col[2] = 255; }
 639         else if (seq->flag & SELECT) UI_GetColorPtrShade3ubv(col, col, -50);
 640         /* else UI_GetColorPtrShade3ubv(col, col, 0); */ /* DO NOTHING */
 641
 642         glColor3ubv(col);
 643
 644         glVertex2f(x1, y1);
 645         glVertex2f(x2, y1);
 646
 647         if (seq->flag & SEQ_INVALID_EFFECT) { col[0] = 255; col[1] = 0; col[2] = 255; }
 648         else if (seq->flag & SELECT) UI_GetColorPtrBlendShade3ubv(col, col, col, 0.0, 5);
 649         else UI_GetColorPtrShade3ubv(col, col, -5);
 650
 651         glColor3ubv((GLubyte *)col);
 652
 653         glVertex2f(x2, ymid1);
 654         glVertex2f(x1, ymid1);
 655
 656         glEnd();
 657
 658         glRectf(x1,  ymid1,  x2,  ymid2);
 659
 660         glBegin(GL_QUADS);
 661
 662         glVertex2f(x1, ymid2);
 663         glVertex2f(x2, ymid2);
 664
 665         if (seq->flag & SELECT) UI_GetColorPtrShade3ubv(col, col, -15);
 666         else UI_GetColorPtrShade3ubv(col, col, 25);
 667
 668         glColor3ubv((GLubyte *)col);
 669
 670         glVertex2f(x2, y2);
 671         glVertex2f(x1, y2);
 672
 673         glEnd();
 674
 675         if (seq->flag & SEQ_MUTE) {
 676                 glDisable(GL_POLYGON_STIPPLE);
 677         }
 678 }
 679
 680 /*
 681  * Draw a sequence strip, bounds check already made
 682  * ARegion is currently only used to get the windows width in pixels
 683  * so wave file sample drawing precision is zoom adjusted
 684  */
 685 static void draw_seq_strip(Scene *scene, ARegion *ar, Sequence *seq, int outline_tint, float pixelx)
 686 {
 687         View2D *v2d = &ar->v2d;
 688         float x1, x2, y1, y2;
 689         unsigned char col[3], background_col[3], is_single_image;
 690         const float handsize_clamped = draw_seq_handle_size_get_clamped(seq, pixelx);
 691
 692         /* we need to know if this is a single image/color or not for drawing */
 693         is_single_image = (char)BKE_sequence_single_check(seq);
 694
 695         /* body */
 696         x1 = (seq->startstill) ? seq->start : seq->startdisp;
 697         y1 = seq->machine + SEQ_STRIP_OFSBOTTOM;
 698         x2 = (seq->endstill) ? (seq->start + seq->len) : seq->enddisp;
 699         y2 = seq->machine + SEQ_STRIP_OFSTOP;
 700
 701
 702         /* get the correct color per strip type*/
 703         //get_seq_color3ubv(scene, seq, col);
 704         get_seq_color3ubv(scene, seq, background_col);
 705
 706         /* draw the main strip body */
 707         if (is_single_image) {  /* single image */
 708                 draw_shadedstrip(seq, background_col,
 709                                  BKE_sequence_tx_get_final_left(seq, 0), y1,
 710                                  BKE_sequence_tx_get_final_right(seq, 0), y2);
 711         }
 712         else {  /* normal operation */
 713                 draw_shadedstrip(seq, background_col, x1, y1, x2, y2);
 714         }
 715
 716         /* draw additional info and controls */
 717         if (!is_single_image)
 718                 draw_seq_extensions(scene, ar, seq);
 719
 720         draw_seq_handle(v2d, seq, handsize_clamped, SEQ_LEFTHANDLE);
 721         draw_seq_handle(v2d, seq, handsize_clamped, SEQ_RIGHTHANDLE);
 722
 723         /* draw the strip outline */
 724         x1 = seq->startdisp;
 725         x2 = seq->enddisp;
 726
 727         /* draw sound wave */
 728         if (seq->type == SEQ_TYPE_SOUND_RAM) {
 729                 drawseqwave(scene, seq, x1, y1, x2, y2, BLI_rctf_size_x(&ar->v2d.cur) / ar->winx);
 730         }
 731
 732         /* draw lock */
 733         if (seq->flag & SEQ_LOCK) {
 734                 glEnable(GL_POLYGON_STIPPLE);
 735                 glEnable(GL_BLEND);
 736
 737                 /* light stripes */
 738                 glColor4ub(255, 255, 255, 32);
 739                 glPolygonStipple(stipple_diag_stripes_pos);
 740                 glRectf(x1, y1, x2, y2);
 741
 742                 /* dark stripes */
 743                 glColor4ub(0, 0, 0, 32);
 744                 glPolygonStipple(stipple_diag_stripes_neg);
 745                 glRectf(x1, y1, x2, y2);
 746
 747                 glDisable(GL_POLYGON_STIPPLE);
 748                 glDisable(GL_BLEND);
 749         }
 750
 751         if (!BKE_sequence_is_valid_check(seq)) {
 752                 glEnable(GL_POLYGON_STIPPLE);
 753
 754                 /* panic! */
 755                 glColor4ub(255, 0, 0, 255);
 756                 glPolygonStipple(stipple_diag_stripes_pos);
 757                 glRectf(x1, y1, x2, y2);
 758
 759                 glDisable(GL_POLYGON_STIPPLE);
 760         }
 761
 762         get_seq_color3ubv(scene, seq, col);
 763         if (G.moving && (seq->flag & SELECT)) {
 764                 if (seq->flag & SEQ_OVERLAP) {
 765                         col[0] = 255; col[1] = col[2] = 40;
 766                 }
 767                 else
 768                         UI_GetColorPtrShade3ubv(col, col, 120 + outline_tint);
 769         }
 770         else
 771                 UI_GetColorPtrShade3ubv(col, col, outline_tint);
 772
 773         glColor3ubv((GLubyte *)col);
 774
 775         if (seq->flag & SEQ_MUTE) {
 776                 glEnable(GL_LINE_STIPPLE);
 777                 glLineStipple(1, 0x8888);
 778         }
 779
 780         uiDrawBoxShade(GL_LINE_LOOP, x1, y1, x2, y2, 0.0, 0.1, 0.0);
 781
 782         if (seq->flag & SEQ_MUTE) {
 783                 glDisable(GL_LINE_STIPPLE);
 784         }
 785
 786         if (seq->type == SEQ_TYPE_META) {
 787                 drawmeta_contents(scene, seq, x1, y1, x2, y2);
 788         }
 789
 790         /* calculate if seq is long enough to print a name */
 791         x1 = seq->startdisp + handsize_clamped;
 792         x2 = seq->enddisp   - handsize_clamped;
 793
 794         /* info text on the strip */
 795         if (x1 < v2d->cur.xmin) x1 = v2d->cur.xmin;
 796         else if (x1 > v2d->cur.xmax) x1 = v2d->cur.xmax;
 797         if (x2 < v2d->cur.xmin) x2 = v2d->cur.xmin;
 798         else if (x2 > v2d->cur.xmax) x2 = v2d->cur.xmax;
 799
 800         /* nice text here would require changing the view matrix for texture text */
 801         if ((x2 - x1) / pixelx > 32) {
 802                 draw_seq_text(v2d, seq, x1, x2, y1, y2, background_col);
 803         }
 804 }
 805
 806 static Sequence *special_seq_update = NULL;
 807
 808 static void UNUSED_FUNCTION(set_special_seq_update) (int val)
 809 {
 810 //      int x;
 811
 812         /* if mouse over a sequence && LEFTMOUSE */
 813         if (val) {
 814 // XXX          special_seq_update = find_nearest_seq(&x);
 815         }
 816         else {
 817                 special_seq_update = NULL;
 818         }
 819 }
 820
 821 ImBuf *sequencer_ibuf_get(struct Main *bmain, Scene *scene, SpaceSeq *sseq, int cfra, int frame_ofs)
 822 {
 823         SeqRenderData context;
 824         ImBuf *ibuf;
 825         int rectx, recty;
 826         float render_size = 0.0;
 827         float proxy_size = 100.0;
 828         short is_break = G.is_break;
 829
 830         render_size = sseq->render_size;
 831         if (render_size == 0) {
 832                 render_size = scene->r.size;
 833         }
 834         else {
 835                 proxy_size = render_size;
 836         }
 837
 838         if (render_size < 0) {
 839                 return NULL;
 840         }
 841
 842         rectx = (render_size * (float)scene->r.xsch) / 100.0f + 0.5f;
 843         recty = (render_size * (float)scene->r.ysch) / 100.0f + 0.5f;
 844
 845         context = BKE_sequencer_new_render_data(bmain, scene, rectx, recty, proxy_size);
 846
 847         /* sequencer could start rendering, in this case we need to be sure it wouldn't be canceled
 848          * by Esc pressed somewhere in the past
 849          */
 850         G.is_break = FALSE;
 851
 852         if (special_seq_update)
 853                 ibuf = BKE_sequencer_give_ibuf_direct(context, cfra + frame_ofs, special_seq_update);
 854         else if (!U.prefetchframes) // XXX || (G.f & G_PLAYANIM) == 0) {
 855                 ibuf = BKE_sequencer_give_ibuf(context, cfra + frame_ofs, sseq->chanshown);
 856         else
 857                 ibuf = BKE_sequencer_give_ibuf_threaded(context, cfra + frame_ofs, sseq->chanshown);
 858
 859         /* restore state so real rendering would be canceled (if needed) */
 860         G.is_break = is_break;
 861
 862         return ibuf;
 863 }
 864
 865 static void sequencer_check_scopes(SequencerScopes *scopes, ImBuf *ibuf)
 866 {
 867         if (scopes->reference_ibuf != ibuf) {
 868                 if (scopes->zebra_ibuf) {
 869                         IMB_freeImBuf(scopes->zebra_ibuf);
 870                         scopes->zebra_ibuf = NULL;
 871                 }
 872
 873                 if (scopes->waveform_ibuf) {
 874                         IMB_freeImBuf(scopes->waveform_ibuf);
 875                         scopes->waveform_ibuf = NULL;
 876                 }
 877
 878                 if (scopes->sep_waveform_ibuf) {
 879                         IMB_freeImBuf(scopes->sep_waveform_ibuf);
 880                         scopes->sep_waveform_ibuf = NULL;
 881                 }
 882
 883                 if (scopes->vector_ibuf) {
 884                         IMB_freeImBuf(scopes->vector_ibuf);
 885                         scopes->vector_ibuf = NULL;
 886                 }
 887
 888                 if (scopes->histogram_ibuf) {
 889                         IMB_freeImBuf(scopes->histogram_ibuf);
 890                         scopes->histogram_ibuf = NULL;
 891                 }
 892         }
 893 }
 894
 895 static ImBuf *sequencer_make_scope(Scene *scene, ImBuf *ibuf, ImBuf *(*make_scope_cb) (ImBuf *ibuf))
 896 {
 897         ImBuf *display_ibuf = IMB_dupImBuf(ibuf);
 898         ImBuf *scope;
 899
 900         IMB_colormanagement_imbuf_make_display_space(display_ibuf, &scene->view_settings,
 901                                                              &scene->display_settings);
 902
 903         scope = make_scope_cb(display_ibuf);
 904
 905         IMB_freeImBuf(display_ibuf);
 906
 907         return scope;
 908 }
 909
 910 void draw_image_seq(const bContext *C, Scene *scene, ARegion *ar, SpaceSeq *sseq, int cfra, int frame_ofs, int draw_overlay)
 911 {
 912         struct Main *bmain = CTX_data_main(C);
 913         struct ImBuf *ibuf = NULL;
 914         struct ImBuf *scope = NULL;
 915         struct View2D *v2d = &ar->v2d;
 916         /* int rectx, recty; */ /* UNUSED */
 917         float viewrectx, viewrecty;
 918         float render_size = 0.0;
 919         float proxy_size = 100.0;
 920         float col[3];
 921         GLuint texid;
 922         GLuint last_texid;
 923         void *display_buffer;
 924         void *cache_handle = NULL;
 925         const int is_imbuf = ED_space_sequencer_check_show_imbuf(sseq);
 926         int format, type;
 927         bool glsl_used = false;
 928
 929         if (G.is_rendering == FALSE && (scene->r.seq_flag & R_SEQ_GL_PREV) == 0) {
 930                 /* stop all running jobs, except screen one. currently previews frustrate Render
 931                  * needed to make so sequencer's rendering doesn't conflict with compositor
 932                  */
 933                 WM_jobs_kill_type(CTX_wm_manager(C), WM_JOB_TYPE_COMPOSITE);
 934
 935                 if ((scene->r.seq_flag & R_SEQ_GL_PREV) == 0) {
 936                         /* in case of final rendering used for preview, kill all previews,
 937                          * otherwise threading conflict will happen in rendering module
 938                          */
 939                         WM_jobs_kill_type(CTX_wm_manager(C), WM_JOB_TYPE_RENDER_PREVIEW);
 940                 }
 941         }
 942
 943         render_size = sseq->render_size;
 944         if (render_size == 0) {
 945                 render_size = scene->r.size;
 946         }
 947         else {
 948                 proxy_size = render_size;
 949         }
 950         if (render_size < 0) {
 951                 return;
 952         }
 953
 954         viewrectx = (render_size * (float)scene->r.xsch) / 100.0f;
 955         viewrecty = (render_size * (float)scene->r.ysch) / 100.0f;
 956
 957         /* rectx = viewrectx + 0.5f; */ /* UNUSED */
 958         /* recty = viewrecty + 0.5f; */ /* UNUSED */
 959
 960         if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
 961                 viewrectx *= scene->r.xasp / scene->r.yasp;
 962                 viewrectx /= proxy_size / 100.0f;
 963                 viewrecty /= proxy_size / 100.0f;
 964         }
 965
 966         if (!draw_overlay || sseq->overlay_type == SEQ_DRAW_OVERLAY_REFERENCE) {
 967                 UI_GetThemeColor3fv(TH_SEQ_PREVIEW, col);
 968                 glClearColor(col[0], col[1], col[2], 0.0);
 969                 glClear(GL_COLOR_BUFFER_BIT);
 970         }
 971
 972         /* without this colors can flicker from previous opengl state */
 973         glColor4ub(255, 255, 255, 255);
 974
 975         UI_view2d_totRect_set(v2d, viewrectx + 0.5f, viewrecty + 0.5f);
 976         UI_view2d_curRect_validate(v2d);
 977
 978         /* only initialize the preview if a render is in progress */
 979         if (G.is_rendering)
 980                 return;
 981
 982         ibuf = sequencer_ibuf_get(bmain, scene, sseq, cfra, frame_ofs);
 983
 984         if (ibuf == NULL)
 985                 return;
 986
 987         if (ibuf->rect == NULL && ibuf->rect_float == NULL)
 988                 return;
 989
 990         if (sseq->mainb != SEQ_DRAW_IMG_IMBUF || sseq->zebra != 0) {
 991                 SequencerScopes *scopes = &sseq->scopes;
 992
 993                 sequencer_check_scopes(scopes, ibuf);
 994
 995                 switch (sseq->mainb) {
 996                         case SEQ_DRAW_IMG_IMBUF:
 997                                 if (!scopes->zebra_ibuf) {
 998                                         ImBuf *display_ibuf = IMB_dupImBuf(ibuf);
 999
1000                                         if (display_ibuf->rect_float) {
1001                                                 IMB_colormanagement_imbuf_make_display_space(display_ibuf, &scene->view_settings,
1002                                                                                              &scene->display_settings);
1003                                         }
1004                                         scopes->zebra_ibuf = make_zebra_view_from_ibuf(display_ibuf, sseq->zebra);
1005                                         IMB_freeImBuf(display_ibuf);
1006                                 }
1007                                 scope = scopes->zebra_ibuf;
1008                                 break;
1009                         case SEQ_DRAW_IMG_WAVEFORM:
1010                                 if ((sseq->flag & SEQ_DRAW_COLOR_SEPARATED) != 0) {
1011                                         if (!scopes->sep_waveform_ibuf)
1012                                                 scopes->sep_waveform_ibuf = sequencer_make_scope(scene, ibuf, make_sep_waveform_view_from_ibuf);
1013                                         scope = scopes->sep_waveform_ibuf;
1014                                 }
1015                                 else {
1016                                         if (!scopes->waveform_ibuf)
1017                                                 scopes->waveform_ibuf = sequencer_make_scope(scene, ibuf, make_waveform_view_from_ibuf);
1018                                         scope = scopes->waveform_ibuf;
1019                                 }
1020                                 break;
1021                         case SEQ_DRAW_IMG_VECTORSCOPE:
1022                                 if (!scopes->vector_ibuf)
1023                                         scopes->vector_ibuf = sequencer_make_scope(scene, ibuf, make_vectorscope_view_from_ibuf);
1024                                 scope = scopes->vector_ibuf;
1025                                 break;
1026                         case SEQ_DRAW_IMG_HISTOGRAM:
1027                                 if (!scopes->histogram_ibuf)
1028                                         scopes->histogram_ibuf = sequencer_make_scope(scene, ibuf, make_histogram_view_from_ibuf);
1029                                 scope = scopes->histogram_ibuf;
1030                                 break;
1031                 }
1032
1033                 scopes->reference_ibuf = ibuf;
1034         }
1035
1036         /* setting up the view - actual drawing starts here */
1037         UI_view2d_view_ortho(v2d);
1038
1039         /* only draw alpha for main buffer */
1040         if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
1041                 if (sseq->flag & SEQ_USE_ALPHA) {
1042                         glEnable(GL_BLEND);
1043                         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1044
1045                         fdrawcheckerboard(v2d->tot.xmin, v2d->tot.ymin, v2d->tot.xmax, v2d->tot.ymax);
1046                         glColor4f(1.0, 1.0, 1.0, 1.0);
1047                 }
1048         }
1049
1050         if (scope) {
1051                 IMB_freeImBuf(ibuf);
1052                 ibuf = scope;
1053
1054                 if (ibuf->rect_float && ibuf->rect == NULL) {
1055                         IMB_rect_from_float(ibuf);
1056                 }
1057
1058                 display_buffer = (unsigned char *)ibuf->rect;
1059                 format = GL_RGBA;
1060                 type = GL_UNSIGNED_BYTE;
1061         }
1062         else {
1063                 bool force_fallback = false;
1064
1065                 force_fallback |= (U.image_draw_method != IMAGE_DRAW_METHOD_GLSL);
1066                 force_fallback |= (ibuf->dither != 0.0f);
1067
1068                 if (force_fallback) {
1069                         /* Fallback to CPU based color space conversion */
1070                         glsl_used = false;
1071                         format = GL_RGBA;
1072                         type = GL_UNSIGNED_BYTE;
1073                         display_buffer = NULL;
1074                 }
1075                 else if (ibuf->rect_float) {
1076                         display_buffer = ibuf->rect_float;
1077
1078                         if (ibuf->channels == 4) {
1079                                 format = GL_RGBA;
1080                         }
1081                         else if (ibuf->channels == 3) {
1082                                 format = GL_RGB;
1083                         }
1084                         else {
1085                                 BLI_assert(!"Incompatible number of channels for float buffer in sequencer");
1086                                 format = GL_RGBA;
1087                                 display_buffer = NULL;
1088                         }
1089
1090                         type = GL_FLOAT;
1091
1092                         if (ibuf->float_colorspace) {
1093                                 glsl_used = IMB_colormanagement_setup_glsl_draw_from_space_ctx(C, ibuf->float_colorspace, TRUE);
1094                         }
1095                         else {
1096                                 glsl_used = IMB_colormanagement_setup_glsl_draw_ctx(C, TRUE);
1097                         }
1098                 }
1099                 else if (ibuf->rect) {
1100                         display_buffer = ibuf->rect;
1101                         format = GL_RGBA;
1102                         type = GL_UNSIGNED_BYTE;
1103
1104                         glsl_used = IMB_colormanagement_setup_glsl_draw_from_space_ctx(C, ibuf->rect_colorspace, FALSE);
1105                 }
1106                 else {
1107                         format = GL_RGBA;
1108                         type = GL_UNSIGNED_BYTE;
1109                         display_buffer = NULL;
1110                 }
1111
1112                 /* there's a data to be displayed, but GLSL is not initialized
1113                  * properly, in this case we fallback to CPU-based display transform
1114                  */
1115                 if ((ibuf->rect || ibuf->rect_float) && !glsl_used) {
1116                         display_buffer = IMB_display_buffer_acquire_ctx(C, ibuf, &cache_handle);
1117                         format = GL_RGBA;
1118                         type = GL_UNSIGNED_BYTE;
1119                 }
1120         }
1121
1122         glTexEnvi(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
1123         glColor4f(1.0, 1.0, 1.0, 1.0);
1124
1125         last_texid = glaGetOneInteger(GL_TEXTURE_2D);
1126         glEnable(GL_TEXTURE_2D);
1127         glGenTextures(1, (GLuint *)&texid);
1128
1129         glBindTexture(GL_TEXTURE_2D, texid);
1130
1131         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
1132         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
1133
1134         if (type == GL_FLOAT)
1135                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA16F_ARB, ibuf->x, ibuf->y, 0, format, type, display_buffer);
1136         else
1137                 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, ibuf->x, ibuf->y, 0, format, type, display_buffer);
1138
1139         glBegin(GL_QUADS);
1140
1141         if (draw_overlay) {
1142                 if (sseq->overlay_type == SEQ_DRAW_OVERLAY_RECT) {
1143                         rctf tot_clip;
1144                         tot_clip.xmin = v2d->tot.xmin + (fabsf(BLI_rctf_size_x(&v2d->tot)) * scene->ed->over_border.xmin);
1145                         tot_clip.ymin = v2d->tot.ymin + (fabsf(BLI_rctf_size_y(&v2d->tot)) * scene->ed->over_border.ymin);
1146                         tot_clip.xmax = v2d->tot.xmin + (fabsf(BLI_rctf_size_x(&v2d->tot)) * scene->ed->over_border.xmax);
1147                         tot_clip.ymax = v2d->tot.ymin + (fabsf(BLI_rctf_size_y(&v2d->tot)) * scene->ed->over_border.ymax);
1148
1149                         glTexCoord2f(scene->ed->over_border.xmin, scene->ed->over_border.ymin); glVertex2f(tot_clip.xmin, tot_clip.ymin);
1150                         glTexCoord2f(scene->ed->over_border.xmin, scene->ed->over_border.ymax); glVertex2f(tot_clip.xmin, tot_clip.ymax);
1151                         glTexCoord2f(scene->ed->over_border.xmax, scene->ed->over_border.ymax); glVertex2f(tot_clip.xmax, tot_clip.ymax);
1152                         glTexCoord2f(scene->ed->over_border.xmax, scene->ed->over_border.ymin); glVertex2f(tot_clip.xmax, tot_clip.ymin);
1153                 }
1154                 else if (sseq->overlay_type == SEQ_DRAW_OVERLAY_REFERENCE) {
1155                         glTexCoord2f(0.0f, 0.0f); glVertex2f(v2d->tot.xmin, v2d->tot.ymin);
1156                         glTexCoord2f(0.0f, 1.0f); glVertex2f(v2d->tot.xmin, v2d->tot.ymax);
1157                         glTexCoord2f(1.0f, 1.0f); glVertex2f(v2d->tot.xmax, v2d->tot.ymax);
1158                         glTexCoord2f(1.0f, 0.0f); glVertex2f(v2d->tot.xmax, v2d->tot.ymin);
1159                 }
1160         }
1161         else {
1162                 glTexCoord2f(0.0f, 0.0f); glVertex2f(v2d->tot.xmin, v2d->tot.ymin);
1163                 glTexCoord2f(0.0f, 1.0f); glVertex2f(v2d->tot.xmin, v2d->tot.ymax);
1164                 glTexCoord2f(1.0f, 1.0f); glVertex2f(v2d->tot.xmax, v2d->tot.ymax);
1165                 glTexCoord2f(1.0f, 0.0f); glVertex2f(v2d->tot.xmax, v2d->tot.ymin);
1166         }
1167         glEnd();
1168         glBindTexture(GL_TEXTURE_2D, last_texid);
1169         glDisable(GL_TEXTURE_2D);
1170         if (sseq->mainb == SEQ_DRAW_IMG_IMBUF && sseq->flag & SEQ_USE_ALPHA)
1171                 glDisable(GL_BLEND);
1172         glDeleteTextures(1, &texid);
1173
1174         if (glsl_used)
1175                 IMB_colormanagement_finish_glsl_draw();
1176
1177         if (sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
1178
1179                 float x1 = v2d->tot.xmin;
1180                 float y1 = v2d->tot.ymin;
1181                 float x2 = v2d->tot.xmax;
1182                 float y2 = v2d->tot.ymax;
1183
1184                 /* border */
1185                 setlinestyle(3);
1186
1187                 UI_ThemeColorBlendShade(TH_WIRE, TH_BACK, 1.0, 0);
1188
1189                 glBegin(GL_LINE_LOOP);
1190                 glVertex2f(x1 - 0.5f, y1 - 0.5f);
1191                 glVertex2f(x1 - 0.5f, y2 + 0.5f);
1192                 glVertex2f(x2 + 0.5f, y2 + 0.5f);
1193                 glVertex2f(x2 + 0.5f, y1 - 0.5f);
1194                 glEnd();
1195
1196                 /* safety border */
1197                 if ((sseq->flag & SEQ_DRAW_SAFE_MARGINS) != 0) {
1198                         float fac = 0.1;
1199
1200                         float a = fac * (x2 - x1);
1201                         x1 += a;
1202                         x2 -= a;
1203
1204                         a = fac * (y2 - y1);
1205                         y1 += a;
1206                         y2 -= a;
1207
1208                         glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
1209
1210                         uiSetRoundBox(UI_CNR_ALL);
1211                         uiDrawBox(GL_LINE_LOOP, x1, y1, x2, y2, 12.0);
1212
1213                         glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
1214
1215                 }
1216
1217                 setlinestyle(0);
1218         }
1219
1220         if (sseq->flag & SEQ_SHOW_GPENCIL) {
1221                 if (is_imbuf) {
1222                         /* draw grease-pencil (image aligned) */
1223                         draw_gpencil_2dimage(C);
1224                 }
1225         }
1226
1227         if (!scope)
1228                 IMB_freeImBuf(ibuf);
1229
1230         /* ortho at pixel level */
1231         UI_view2d_view_restore(C);
1232
1233         if (sseq->flag & SEQ_SHOW_GPENCIL) {
1234                 if (is_imbuf) {
1235                         /* draw grease-pencil (screen aligned) */
1236                         draw_gpencil_view2d(C, 0);
1237                 }
1238         }
1239
1240
1241         /* NOTE: sequencer mask editing isnt finished, the draw code is working but editing not,
1242          * for now just disable drawing since the strip frame will likely be offset */
1243
1244         //if (sc->mode == SC_MODE_MASKEDIT) {
1245         if (0 && sseq->mainb == SEQ_DRAW_IMG_IMBUF) {
1246                 Mask *mask = BKE_sequencer_mask_get(scene);
1247
1248                 if (mask) {
1249                         int width, height;
1250                         float aspx = 1.0f, aspy = 1.0f;
1251                         // ED_mask_get_size(C, &width, &height);
1252
1253                         //Scene *scene = CTX_data_scene(C);
1254                         width = (scene->r.size * scene->r.xsch) / 100;
1255                         height = (scene->r.size * scene->r.ysch) / 100;
1256
1257                         ED_mask_draw_region(mask, ar,
1258                                             0, 0,  /* TODO */
1259                                             width, height,
1260                                             aspx, aspy,
1261                                             FALSE, TRUE,
1262                                             NULL, C);
1263                 }
1264         }
1265
1266         if (cache_handle)
1267                 IMB_display_buffer_release(cache_handle);
1268 }
1269
1270 #if 0
1271 void drawprefetchseqspace(Scene *scene, ARegion *UNUSED(ar), SpaceSeq *sseq)
1272 {
1273         int rectx, recty;
1274         int render_size = sseq->render_size;
1275         int proxy_size = 100.0;
1276         if (render_size == 0) {
1277                 render_size = scene->r.size;
1278         }
1279         else {
1280                 proxy_size = render_size;
1281         }
1282         if (render_size < 0) {
1283                 return;
1284         }
1285
1286         rectx = (render_size * scene->r.xsch) / 100;
1287         recty = (render_size * scene->r.ysch) / 100;
1288
1289         if (sseq->mainb != SEQ_DRAW_SEQUENCE) {
1290                 give_ibuf_prefetch_request(
1291                     rectx, recty, (scene->r.cfra), sseq->chanshown,
1292                     proxy_size);
1293         }
1294 }
1295 #endif
1296
1297 /* draw backdrop of the sequencer strips view */
1298 static void draw_seq_backdrop(View2D *v2d)
1299 {
1300         int i;
1301
1302         /* darker gray overlay over the view backdrop */
1303         UI_ThemeColorShade(TH_BACK, -20);
1304         glRectf(v2d->cur.xmin,  -1.0,  v2d->cur.xmax,  1.0);
1305
1306         /* Alternating horizontal stripes */
1307         i = max_ii(1, ((int)v2d->cur.ymin) - 1);
1308
1309         glBegin(GL_QUADS);
1310         while (i < v2d->cur.ymax) {
1311                 if (((int)i) & 1)
1312                         UI_ThemeColorShade(TH_BACK, -15);
1313                 else
1314                         UI_ThemeColorShade(TH_BACK, -25);
1315
1316                 glVertex2f(v2d->cur.xmax, i);
1317                 glVertex2f(v2d->cur.xmin, i);
1318                 glVertex2f(v2d->cur.xmin, i + 1);
1319                 glVertex2f(v2d->cur.xmax, i + 1);
1320
1321                 i += 1.0;
1322         }
1323         glEnd();
1324
1325         /* Darker lines separating the horizontal bands */
1326         i = max_ii(1, ((int)v2d->cur.ymin) - 1);
1327         UI_ThemeColor(TH_GRID);
1328
1329         glBegin(GL_LINES);
1330         while (i < v2d->cur.ymax) {
1331                 glVertex2f(v2d->cur.xmax, i);
1332                 glVertex2f(v2d->cur.xmin, i);
1333
1334                 i += 1.0;
1335         }
1336         glEnd();
1337 }
1338
1339 /* draw the contents of the sequencer strips view */
1340 static void draw_seq_strips(const bContext *C, Editing *ed, ARegion *ar)
1341 {
1342         Scene *scene = CTX_data_scene(C);
1343         View2D *v2d = &ar->v2d;
1344         Sequence *last_seq = BKE_sequencer_active_get(scene);
1345         int sel = 0, j;
1346         float pixelx = BLI_rctf_size_x(&v2d->cur) / BLI_rcti_size_x(&v2d->mask);
1347
1348         /* loop through twice, first unselected, then selected */
1349         for (j = 0; j < 2; j++) {
1350                 Sequence *seq;
1351                 int outline_tint = (j) ? -60 : -150; /* highlighting around strip edges indicating selection */
1352
1353                 /* loop through strips, checking for those that are visible */
1354                 for (seq = ed->seqbasep->first; seq; seq = seq->next) {
1355                         /* boundbox and selection tests for NOT drawing the strip... */
1356                         if ((seq->flag & SELECT) != sel) continue;
1357                         else if (seq == last_seq) continue;
1358                         else if (min_ii(seq->startdisp, seq->start) > v2d->cur.xmax) continue;
1359                         else if (max_ii(seq->enddisp, seq->start + seq->len) < v2d->cur.xmin) continue;
1360                         else if (seq->machine + 1.0f < v2d->cur.ymin) continue;
1361                         else if (seq->machine > v2d->cur.ymax) continue;
1362
1363                         /* strip passed all tests unscathed... so draw it now */
1364                         draw_seq_strip(scene, ar, seq, outline_tint, pixelx);
1365                 }
1366
1367                 /* draw selected next time round */
1368                 sel = SELECT;
1369         }
1370
1371         /* draw the last selected last (i.e. 'active' in other parts of Blender), removes some overlapping error */
1372         if (last_seq)
1373                 draw_seq_strip(scene, ar, last_seq, 120, pixelx);
1374 }
1375
1376 static void seq_draw_sfra_efra(Scene *scene, View2D *v2d)
1377 {
1378         glEnable(GL_BLEND);
1379
1380         /* draw darkened area outside of active timeline
1381          * frame range used is preview range or scene range */
1382         UI_ThemeColorShadeAlpha(TH_BACK, -25, -100);
1383
1384         if (PSFRA < PEFRA+1) {
1385                 glRectf(v2d->cur.xmin, v2d->cur.ymin, (float)PSFRA, v2d->cur.ymax);
1386                 glRectf((float)(PEFRA + 1), v2d->cur.ymin, v2d->cur.xmax, v2d->cur.ymax);
1387         }
1388         else {
1389                 glRectf(v2d->cur.xmin, v2d->cur.ymin, v2d->cur.xmax, v2d->cur.ymax);
1390         }
1391
1392         UI_ThemeColorShade(TH_BACK, -60);
1393         /* thin lines where the actual frames are */
1394         fdrawline((float)PSFRA, v2d->cur.ymin, (float)PSFRA, v2d->cur.ymax);
1395         fdrawline((float)(PEFRA + 1), v2d->cur.ymin, (float)(PEFRA + 1), v2d->cur.ymax);
1396
1397         glDisable(GL_BLEND);
1398 }
1399
1400 /* Draw Timeline/Strip Editor Mode for Sequencer */
1401 void draw_timeline_seq(const bContext *C, ARegion *ar)
1402 {
1403         Scene *scene = CTX_data_scene(C);
1404         Editing *ed = BKE_sequencer_editing_get(scene, FALSE);
1405         SpaceSeq *sseq = CTX_wm_space_seq(C);
1406         View2D *v2d = &ar->v2d;
1407         View2DScrollers *scrollers;
1408         short unit = 0, flag = 0;
1409         float col[3];
1410
1411         /* clear and setup matrix */
1412         UI_GetThemeColor3fv(TH_BACK, col);
1413         if (ed && ed->metastack.first)
1414                 glClearColor(col[0], col[1], col[2] - 0.1f, 0.0f);
1415         else
1416                 glClearColor(col[0], col[1], col[2], 0.0f);
1417         glClear(GL_COLOR_BUFFER_BIT);
1418
1419         UI_view2d_view_ortho(v2d);
1420
1421
1422         /* calculate extents of sequencer strips/data
1423          * NOTE: needed for the scrollers later
1424          */
1425         boundbox_seq(scene, &v2d->tot);
1426
1427
1428         /* draw backdrop */
1429         draw_seq_backdrop(v2d);
1430
1431         /* regular grid-pattern over the rest of the view (i.e. 25-frame grid lines) */
1432         // NOTE: the gridlines are currently spaced every 25 frames, which is only fine for 25 fps, but maybe not for 30...
1433         UI_view2d_constant_grid_draw(v2d);
1434
1435         ED_region_draw_cb_draw(C, ar, REGION_DRAW_PRE_VIEW);
1436
1437         seq_draw_sfra_efra(scene, v2d);
1438
1439         /* sequence strips (if there is data available to be drawn) */
1440         if (ed) {
1441                 /* draw the data */
1442                 draw_seq_strips(C, ed, ar);
1443
1444                 /* text draw cached (for sequence names), in pixelspace now */
1445                 UI_view2d_text_cache_draw(ar);
1446         }
1447
1448         /* current frame */
1449         UI_view2d_view_ortho(v2d);
1450         if ((sseq->flag & SEQ_DRAWFRAMES) == 0)      flag |= DRAWCFRA_UNIT_SECONDS;
1451         if ((sseq->flag & SEQ_NO_DRAW_CFRANUM) == 0) flag |= DRAWCFRA_SHOW_NUMBOX;
1452         ANIM_draw_cfra(C, v2d, flag);
1453
1454         /* markers */
1455         UI_view2d_view_orthoSpecial(ar, v2d, 1);
1456         draw_markers_time(C, DRAW_MARKERS_LINES);
1457
1458         /* preview range */
1459         UI_view2d_view_ortho(v2d);
1460         ANIM_draw_previewrange(C, v2d, 1);
1461
1462         /* overlap playhead */
1463         if (scene->ed && scene->ed->over_flag & SEQ_EDIT_OVERLAY_SHOW) {
1464                 int cfra_over = (scene->ed->over_flag & SEQ_EDIT_OVERLAY_ABS) ? scene->ed->over_cfra : scene->r.cfra + scene->ed->over_ofs;
1465                 glColor3f(0.2, 0.2, 0.2);
1466                 // glRectf(cfra_over, v2d->cur.ymin, scene->ed->over_ofs + scene->r.cfra + 1, v2d->cur.ymax);
1467
1468                 glBegin(GL_LINES);
1469                 glVertex2f(cfra_over, v2d->cur.ymin);
1470                 glVertex2f(cfra_over, v2d->cur.ymax);
1471                 glEnd();
1472
1473         }
1474
1475         /* callback */
1476         ED_region_draw_cb_draw(C, ar, REGION_DRAW_POST_VIEW);
1477
1478         /* reset view matrix */
1479         UI_view2d_view_restore(C);
1480
1481         /* scrollers */
1482         unit = (sseq->flag & SEQ_DRAWFRAMES) ? V2D_UNIT_FRAMES : V2D_UNIT_SECONDSSEQ;
1483         scrollers = UI_view2d_scrollers_calc(C, v2d, unit, V2D_GRID_CLAMP, V2D_UNIT_VALUES, V2D_GRID_CLAMP);
1484         UI_view2d_scrollers_draw(C, v2d, scrollers);
1485         UI_view2d_scrollers_free(scrollers);
1486 }
1487
1488