src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include "main.h"
  14 #include "image-overlay.h"
  15
  16 #include "collect.h"
  17 #include "debug.h"
  18 #include "exif.h"
  19 #include "filedata.h"
  20 #include "histogram.h"
  21 #include "image.h"
  22 #include "img-view.h"
  23 #include "layout.h"
  24 #include "pixbuf-renderer.h"
  25 #include "pixbuf_util.h"
  26 #include "ui_fileops.h"
  27
  28 /*
  29  *----------------------------------------------------------------------------
  30  * image overlay
  31  *----------------------------------------------------------------------------
  32  */
  33
  34
  35 typedef struct _OverlayStateData OverlayStateData;
  36 struct _OverlayStateData {
  37         ImageWindow *imd;
  38         ImageState changed_states;
  39
  40         Histogram *histogram;
  41
  42         OsdShowFlags show;
  43
  44         gint ovl_info;
  45
  46         gint icon_time[IMAGE_OSD_COUNT];
  47         gint icon_id[IMAGE_OSD_COUNT];
  48
  49         gint idle_id;
  50         gint timer_id;
  51         gulong destroy_id;
  52 };
  53
  54
  55 typedef struct _OSDIcon OSDIcon;
  56 struct _OSDIcon {
  57         gint reset;     /* reset on new image */
  58         gint x;         /* x, y offset */
  59         gint y;
  60         gchar *key;     /* inline pixbuf */
  61 };
  62
  63 static OSDIcon osd_icons[] = {
  64         {  TRUE,   0,   0, NULL },                      /* none */
  65         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  66         {  TRUE, -10, -10, NULL },                      /* user rotated */
  67         {  TRUE, -40, -10, NULL },                      /* color embedded */
  68         {  TRUE, -70, -10, NULL },                      /* first image */
  69         {  TRUE, -70, -10, NULL },                      /* last image */
  70         { FALSE, -70, -10, NULL },                      /* osd enabled */
  71         { FALSE, 0, 0, NULL }
  72 };
  73
  74 #define OSD_DATA "overlay-data"
  75
  76 #define OSD_INFO_X 10
  77 #define OSD_INFO_Y -10
  78
  79 #define IMAGE_OSD_DEFAULT_DURATION 30
  80
  81 #define HISTOGRAM_HEIGHT 140
  82 #define HISTOGRAM_WIDTH  256
  83
  84 static void image_osd_timer_schedule(OverlayStateData *osd);
  85
  86
  87 void set_default_image_overlay_template_string(ConfOptions *options)
  88 {
  89         if (options->image_overlay.common.template_string) g_free(options->image_overlay.common.template_string);
  90         options->image_overlay.common.template_string = g_strdup(DEFAULT_OVERLAY_INFO);
  91 }
  92
  93 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
  94 {
  95         OverlayStateData *osd;
  96
  97         if (!imd) return NULL;
  98
  99         g_assert(imd->pr);
 100
 101         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 102         return osd;
 103 }
 104
 105 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 106 {
 107         g_assert(imd);
 108         g_assert(imd->pr);
 109         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 110 }
 111
 112 /*
 113  *----------------------------------------------------------------------------
 114  * image histogram
 115  *----------------------------------------------------------------------------
 116  */
 117
 118
 119 void image_osd_histogram_chan_toggle(ImageWindow *imd)
 120 {
 121         OverlayStateData *osd = image_get_osd_data(imd);
 122
 123         if (!osd || !osd->histogram) return;
 124
 125         histogram_set_channel(osd->histogram, (histogram_get_channel(osd->histogram) +1)%HCHAN_COUNT);
 126         image_osd_update(imd);
 127 }
 128
 129 void image_osd_histogram_log_toggle(ImageWindow *imd)
 130 {
 131         OverlayStateData *osd = image_get_osd_data(imd);
 132
 133         if (!osd || !osd->histogram) return;
 134
 135         histogram_set_mode(osd->histogram, !histogram_get_mode(osd->histogram));
 136         image_osd_update(imd);
 137 }
 138
 139 void image_osd_toggle(ImageWindow *imd)
 140 {
 141         OverlayStateData *osd;
 142
 143         if (!imd) return;
 144
 145         osd = image_get_osd_data(imd);
 146         if (!osd)
 147                 {
 148                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 149                 return;
 150                 }
 151
 152         if (osd->show != OSD_SHOW_NOTHING)
 153                 {
 154                 if (osd->show & OSD_SHOW_HISTOGRAM)
 155                         {
 156                         image_osd_set(imd, OSD_SHOW_NOTHING);
 157                         }
 158                 else
 159                         {
 160                         image_osd_set(imd, osd->show | OSD_SHOW_HISTOGRAM);
 161                         }
 162                 }
 163 }
 164
 165 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 166 {
 167         gchar delim = '%', imp = '|', sep[] = " - ";
 168         gchar *start, *end;
 169         gint pos, prev;
 170         gint last;
 171         gchar *name, *data;
 172         GString *new;
 173         gchar *ret;
 174         ExifData *exif;
 175
 176         if (!str || !*str) return g_strdup("");
 177
 178         new = g_string_new(str);
 179
 180         exif = exif_read_fd(imd->image_fd);
 181         prev = 0;
 182         last = FALSE;
 183
 184         while (TRUE)
 185                 {
 186                 gint limit = 0;
 187                 gchar *trunc = NULL;
 188                 gchar *limpos = NULL;
 189                 gchar *extra = NULL;
 190                 gchar *extrapos = NULL;
 191                 gchar *p;
 192
 193                 start = strchr(new->str, delim);
 194                 if (!start)
 195                         break;
 196                 end = strchr(start+1, delim);
 197                 if (!end)
 198                         break;
 199
 200                 /* Search for optionnal modifiers
 201                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 202                  */
 203                 for (p = start + 1; p < end; p++)
 204                         {
 205                         if (p[0] == ':')
 206                                 {
 207                                 if (g_ascii_isdigit(p[1]) && !limpos)
 208                                         {
 209                                         limpos = p + 1;
 210                                         if (!trunc) trunc = p;
 211                                         }
 212                                 else
 213                                         {
 214                                         extrapos = p + 1;
 215                                         if (!trunc) trunc = p;
 216                                         break;
 217                                         }
 218                                 }
 219                         }
 220
 221                 if (limpos)
 222                         limit = atoi(limpos);
 223
 224                 if (extrapos)
 225                         extra = g_strndup(extrapos, end - extrapos);
 226
 227                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 228
 229                 pos = start-new->str;
 230                 data = g_strdup(g_hash_table_lookup(vars, name));
 231                 if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 232                 if (!data && exif)
 233                         data = exif_get_data_as_text(exif, name);
 234                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 235                         {
 236                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 237                         g_free(data);
 238                         data = new_data;
 239                         }
 240
 241                 if (data)
 242                         {
 243                         /* Since we use pango markup to display, we need to escape here */
 244                         gchar *escaped = g_markup_escape_text(data, -1);
 245                         g_free(data);
 246                         data = escaped;
 247                         }
 248
 249                 if (extra)
 250                         {
 251                         if (data && *data)
 252                                 {
 253                                 /* Display data between left and right parts of extra string
 254                                  * the data is expressed by a '*' character.
 255                                  * If no "*" is present, the extra string is just appended to data string.
 256                                  * Pango mark up is accepted in left and right parts.
 257                                  * Any \n is replaced by a newline
 258                                  * Examples:
 259                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 260                                  * "\n"         -> ended with newline
 261                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 262                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 263                                  *
 264                                  * FIXME: using background / foreground colors lead to weird results.
 265                                  */
 266                                 gchar *new_data;
 267                                 gchar *left = NULL;
 268                                 gchar *right = extra;
 269                                 gchar *p;
 270                                 gint len = strlen(extra);
 271
 272                                 /* Search and replace "\n" by a newline character */
 273                                 for (p = extra; *p; p++, len--)
 274                                         if (p[0] == '\\' && p[1] == 'n')
 275                                                 {
 276                                                 memmove(p+1, p+2, --len);
 277                                                 *p = '\n';
 278                                                 }
 279
 280                                 /* Search for left and right parts */
 281                                 for (p = extra; *p; p++)
 282                                         if (*p == '*')
 283                                                 {
 284                                                 *p = '\0';
 285                                                 p++;
 286                                                 right = p;
 287                                                 left = extra;
 288                                                 break;
 289                                                 }
 290
 291                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 292                                 g_free(data);
 293                                 data = new_data;
 294                                 }
 295                         g_free(extra);
 296                         }
 297
 298                 g_string_erase(new, pos, end-start+1);
 299                 if (data)
 300                         g_string_insert(new, pos, data);
 301
 302                 if (pos-prev == 2 && new->str[pos-1] == imp)
 303                         {
 304                         g_string_erase(new, --pos, 1);
 305                         if (last && data)
 306                                 {
 307                                 g_string_insert(new, pos, sep);
 308                                 pos += strlen(sep);
 309                                 }
 310                         }
 311
 312                 prev = data ? pos+strlen(data)-1 : pos-1;
 313                 last = data ? TRUE : last;
 314                 g_free(name);
 315                 g_free(data);
 316                 }
 317
 318         exif_free(exif);
 319         /* search and destroy empty lines */
 320         end = new->str;
 321         while ((start = strchr(end, '\n')))
 322                 {
 323                 end = start;
 324                 while (*++(end) == '\n')
 325                         ;
 326                 g_string_erase(new, start-new->str, end-start-1);
 327                 }
 328
 329         g_strchomp(new->str);
 330
 331         ret = new->str;
 332         g_string_free(new, FALSE);
 333
 334         return ret;
 335 }
 336
 337 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 338 {
 339         GdkPixbuf *pixbuf = NULL;
 340         gint width, height;
 341         PangoLayout *layout;
 342         const gchar *name;
 343         gchar *name_escaped;
 344         gchar *text;
 345         gchar *size;
 346         gint n, t;
 347         CollectionData *cd;
 348         CollectInfo *info;
 349         GdkPixbuf *imgpixbuf = NULL;
 350         LayoutWindow *lw = NULL;
 351         gint with_hist = 0;
 352         gchar *ct;
 353         gint w, h;
 354         GHashTable *vars;
 355         ImageWindow *imd = osd->imd;
 356         FileData *fd = image_get_fd(imd);
 357
 358         if (!fd) return NULL;
 359
 360         vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 361
 362         name = image_get_name(imd);
 363         if (name)
 364                 {
 365                 name_escaped = g_markup_escape_text(name, -1);
 366                 }
 367         else
 368                 {
 369                 name_escaped = NULL;
 370                 }
 371
 372         cd = image_get_collection(imd, &info);
 373         if (cd)
 374                 {
 375                 gchar *collection_name;
 376
 377                 t = g_list_length(cd->list);
 378                 n = g_list_index(cd->list, info) + 1;
 379                 if (cd->name)
 380                         {
 381                         if (file_extension_match(cd->name, ".gqv"))
 382                                 collection_name = remove_extension_from_path(cd->name);
 383                         else
 384                                 collection_name = g_strdup(cd->name);
 385                         }
 386                 else
 387                         {
 388                         collection_name = g_strdup(_("Untitled"));
 389                         }
 390
 391                 ct = g_markup_escape_text(collection_name, -1);
 392                 g_free(collection_name);
 393                 }
 394         else
 395                 {
 396                 lw = layout_find_by_image(imd);
 397                 if (lw)
 398                         {
 399                         if (lw->slideshow)
 400                                 {
 401                                 n = g_list_length(lw->slideshow->list_done);
 402                                 t = n + g_list_length(lw->slideshow->list);
 403                                 if (n == 0) n = t;
 404                                 }
 405                         else
 406                                 {
 407                                 t = layout_list_count(lw, NULL);
 408                                 n = layout_list_get_index(lw, image_get_path(lw->image)) + 1;
 409                                 }
 410                         }
 411                 else if (view_window_find_image(imd, &n, &t))
 412                         {
 413                         n++;
 414                         }
 415                 else
 416                         {
 417                         t = 1;
 418                         n = 1;
 419                         }
 420
 421                 if (n < 1) n = 1;
 422                 if (t < 1) t = 1;
 423
 424                 ct = g_strdup("");
 425                 }
 426
 427         size = text_from_size_abrev(imd->size);
 428         if (!imd->unknown)
 429                 {
 430                 if (imd->delay_flip &&
 431                     imd->il && imd->il->pixbuf &&
 432                     image_get_pixbuf(imd) != imd->il->pixbuf)
 433                         {
 434                         w = gdk_pixbuf_get_width(imd->il->pixbuf);
 435                         h = gdk_pixbuf_get_height(imd->il->pixbuf);
 436                         imgpixbuf = imd->il->pixbuf;
 437                         }
 438                 else
 439                         {
 440                         image_get_image_size(imd, &w, &h);
 441                         imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 442                         }
 443
 444                 if (imgpixbuf && (osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram
 445                               && (!imd->il || imd->il->done))
 446                         with_hist=1;
 447
 448                 g_hash_table_insert(vars, "width", g_strdup_printf("%d", w));
 449                 g_hash_table_insert(vars, "height", g_strdup_printf("%d", h));
 450                 g_hash_table_insert(vars, "res", g_strdup_printf("%d × %d", w, h));
 451                 }
 452
 453         g_hash_table_insert(vars, "collection", g_strdup(ct));
 454         g_hash_table_insert(vars, "number", g_strdup_printf("%d", n));
 455         g_hash_table_insert(vars, "total", g_strdup_printf("%d", t));
 456         g_hash_table_insert(vars, "name", g_strdup(name_escaped));
 457         g_hash_table_insert(vars, "date", g_strdup(text_from_time(imd->mtime)));
 458         g_hash_table_insert(vars, "size", g_strdup(size));
 459         g_hash_table_insert(vars, "zoom", image_zoom_get_as_text(imd));
 460
 461         if (!name_escaped)
 462                 {
 463                 text = g_strdup_printf(_("Untitled"));
 464                 }
 465         else
 466                 {
 467                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 468                 }
 469
 470         g_free(size);
 471         g_free(ct);
 472         g_free(name_escaped);
 473         g_hash_table_destroy(vars);
 474
 475         {
 476                 gint active_marks = 0;
 477                 gint mark;
 478                 gchar *text2;
 479
 480                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 481                         {
 482                         active_marks += fd->marks[mark];
 483                         }
 484
 485                 if (active_marks > 0)
 486                         {
 487                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 488
 489                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 490                                 {
 491                                 g_string_append_printf(buf, fd->marks[mark] ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 492                                 }
 493
 494                         if (*text)
 495                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 496                         else
 497                                 text2 = g_strdup(buf->str);
 498                         g_string_free(buf, TRUE);
 499                         g_free(text);
 500                         text = text2;
 501                         }
 502
 503                 if (with_hist)
 504                         {
 505                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 506                         if (*text)
 507                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 508                         else
 509                                 text2 = g_strdup(escaped_histogram_label);
 510                         g_free(escaped_histogram_label);
 511                         g_free(text);
 512                         text = text2;
 513                         }
 514         }
 515
 516         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 517         pango_layout_set_markup(layout, text, -1);
 518         g_free(text);
 519
 520         pango_layout_get_pixel_size(layout, &width, &height);
 521         /* with empty text width is set to 0, but not height) */
 522         if (width == 0)
 523                 height = 0;
 524         else if (height == 0)
 525                 width = 0;
 526         if (width > 0) width += 10;
 527         if (height > 0) height += 10;
 528
 529         if (with_hist)
 530                 {
 531                 histogram_read(osd->histogram, imgpixbuf);
 532                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 533                 height += HISTOGRAM_HEIGHT + 5;
 534                 }
 535
 536         if (width > 0 && height > 0)
 537                 {
 538                 /* TODO: make osd color configurable --Zas */
 539                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 540                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 541                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 542                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 543                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 544                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 545                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 546                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 547                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 548
 549                 if (with_hist)
 550                         {
 551                         gint x = 5;
 552                         gint y = height - HISTOGRAM_HEIGHT - 5;
 553                         gint w = width - 10;
 554                         gint xoffset = 0;
 555                         gint subdiv = 5;
 556                         gint c = 160;
 557                         gint alpha = 250;
 558                         gint i;
 559
 560                         for (i = 0; i < subdiv; i++)
 561                                 {
 562                                 gint d = (i > 0 ? 0 : 1);
 563                                 gint div_width = d + w / subdiv;
 564
 565                                 pixbuf_set_rect(pixbuf, x + xoffset, y, div_width, HISTOGRAM_HEIGHT, c, c, c, alpha, d, 1, 1, 1);
 566                                 xoffset += div_width;
 567                                 }
 568
 569                         histogram_draw(osd->histogram, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 570                         }
 571                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 572         }
 573
 574         g_object_unref(G_OBJECT(layout));
 575
 576         return pixbuf;
 577 }
 578
 579 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 580 {
 581         static GdkPixbuf **icons = NULL;
 582         GdkPixbuf *icon = NULL;
 583
 584         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 585         if (icons[flag]) return icons[flag];
 586
 587         if (osd_icons[flag].key)
 588                 {
 589                 icon = pixbuf_inline(osd_icons[flag].key);
 590                 }
 591
 592         if (!icon)
 593                 {
 594                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 595                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 596                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 597                 switch (flag)
 598                         {
 599                         case IMAGE_OSD_ROTATE_AUTO:
 600                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 601                                                 0, 0, 0, 255,
 602                                                 3, 0, 3, 0);
 603                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 604                                                      20, 9, 14, 15, 14, 3,
 605                                                      0, 0, 0, 255);
 606                                 break;
 607                         case IMAGE_OSD_ROTATE_USER:
 608                                 break;
 609                         case IMAGE_OSD_COLOR:
 610                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 611                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 612                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 613                                 break;
 614                         case IMAGE_OSD_FIRST:
 615                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 616                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 617                                                      12, 5, 18, 11, 6, 11,
 618                                                      0, 0, 0, 255);
 619                                 break;
 620                         case IMAGE_OSD_LAST:
 621                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 622                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 623                                                      12, 18, 6, 12, 18, 12,
 624                                                      0, 0, 0, 255);
 625                                 break;
 626                         case IMAGE_OSD_ICON:
 627                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 628                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 629                                 break;
 630                         default:
 631                                 break;
 632                         }
 633                 }
 634
 635         icons[flag] = icon;
 636
 637         return icon;
 638 }
 639
 640 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 641 {
 642         GdkPixbuf *pixbuf;
 643
 644         if (osd->icon_id[flag]) return;
 645
 646         pixbuf = image_osd_icon_pixbuf(flag);
 647         if (!pixbuf) return;
 648
 649         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 650                                                osd_icons[flag].x, osd_icons[flag].y,
 651                                                TRUE, FALSE);
 652 }
 653
 654 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 655 {
 656         if (osd->icon_id[flag])
 657                 {
 658                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 659                 osd->icon_id[flag] = 0;
 660                 }
 661 }
 662
 663 static gint image_osd_update_cb(gpointer data)
 664 {
 665         OverlayStateData *osd = data;
 666
 667         osd->imd->overlay_show_zoom = FALSE;
 668
 669         if (osd->show & OSD_SHOW_INFO)
 670                 {
 671                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 672                         {
 673                         GdkPixbuf *pixbuf;
 674
 675                         pixbuf = image_osd_info_render(osd);
 676                         if (pixbuf)
 677                                 {
 678                                 if (osd->ovl_info == 0)
 679                                         {
 680                                         osd->ovl_info = image_overlay_add(osd->imd, pixbuf,
 681                                                                           OSD_INFO_X, OSD_INFO_Y, TRUE, FALSE);
 682                                         }
 683                                 else
 684                                         {
 685                                         image_overlay_set(osd->imd, osd->ovl_info, pixbuf, OSD_INFO_X, OSD_INFO_Y);
 686                                         }
 687                                 g_object_unref(pixbuf);
 688                                 }
 689                         else if (osd->ovl_info)
 690                                 {
 691                                 image_overlay_remove(osd->imd, osd->ovl_info);
 692                                 osd->ovl_info = 0;
 693                                 }
 694                         }
 695                 }
 696         else
 697                 {
 698                 if (osd->ovl_info)
 699                         {
 700                         image_overlay_remove(osd->imd, osd->ovl_info);
 701                         osd->ovl_info = 0;
 702                         }
 703                 }
 704
 705         if (osd->show & OSD_SHOW_STATUS)
 706                 {
 707                 gint i;
 708
 709                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 710                         {
 711                         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 712                                 {
 713                                 if (osd_icons[i].reset) osd->icon_time[i] = 0;
 714                                 }
 715                         }
 716
 717                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 718                         {
 719                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 720                         image_osd_timer_schedule(osd);
 721                         }
 722
 723                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 724                         {
 725                         gint n = 0;
 726
 727                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 728                                 {
 729                                 n = 1;
 730                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 731                                 }
 732
 733                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 734                         image_osd_timer_schedule(osd);
 735                         }
 736
 737                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 738                         {
 739                         if (osd->icon_time[i] > 0)
 740                                 {
 741                                 image_osd_icon_show(osd, i);
 742                                 }
 743                         else
 744                                 {
 745                                 image_osd_icon_hide(osd, i);
 746                                 }
 747                         }
 748                 }
 749         else
 750                 {
 751                 gint i;
 752
 753                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 754                         {
 755                         image_osd_icon_hide(osd, i);
 756                         }
 757                 }
 758
 759         if (osd->imd->il && osd->imd->il->done)
 760                 osd->changed_states = IMAGE_STATE_NONE;
 761         osd->idle_id = -1;
 762         return FALSE;
 763 }
 764
 765 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 766 {
 767         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 768
 769         if (osd->idle_id == -1)
 770                 {
 771                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 772                 }
 773 }
 774
 775 void image_osd_update(ImageWindow *imd)
 776 {
 777         OverlayStateData *osd = image_get_osd_data(imd);
 778
 779         if (!osd) return;
 780
 781         image_osd_update_schedule(osd, TRUE);
 782 }
 783
 784 static gint image_osd_timer_cb(gpointer data)
 785 {
 786         OverlayStateData *osd = data;
 787         gint done = TRUE;
 788         gint changed = FALSE;
 789         gint i;
 790
 791         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 792                 {
 793                 if (osd->icon_time[i] > 1)
 794                         {
 795                         osd->icon_time[i]--;
 796                         if (osd->icon_time[i] < 2)
 797                                 {
 798                                 osd->icon_time[i] = 0;
 799                                 changed = TRUE;
 800                                 }
 801                         else
 802                                 {
 803                                 done = FALSE;
 804                                 }
 805                         }
 806                 }
 807
 808         if (changed) image_osd_update_schedule(osd, FALSE);
 809
 810         if (done)
 811                 {
 812                 osd->timer_id = -1;
 813                 return FALSE;
 814                 }
 815
 816         return TRUE;
 817 }
 818
 819 static void image_osd_timer_schedule(OverlayStateData *osd)
 820 {
 821         if (osd->timer_id == -1)
 822                 {
 823                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 824                 }
 825 }
 826
 827 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 828 {
 829         OverlayStateData *osd = data;
 830
 831         osd->changed_states |= state;
 832         image_osd_update_schedule(osd, FALSE);
 833 }
 834
 835 static void image_osd_free(OverlayStateData *osd)
 836 {
 837         if (!osd) return;
 838
 839         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 840         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 841
 842         if (osd->imd)
 843                 {
 844                 gint i;
 845
 846                 image_set_osd_data(osd->imd, NULL);
 847                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 848
 849                 image_set_state_func(osd->imd, NULL, NULL);
 850                 image_overlay_remove(osd->imd, osd->ovl_info);
 851
 852                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 853                         {
 854                         image_osd_icon_hide(osd, i);
 855                         }
 856                 }
 857
 858         if (osd->histogram) histogram_free(osd->histogram);
 859
 860         g_free(osd);
 861 }
 862
 863 static void image_osd_remove(ImageWindow *imd)
 864 {
 865         OverlayStateData *osd = image_get_osd_data(imd);
 866
 867         if (osd) image_osd_free(osd);
 868 }
 869
 870 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 871 {
 872         OverlayStateData *osd = data;
 873
 874         osd->imd = NULL;
 875         image_osd_free(osd);
 876 }
 877
 878 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 879 {
 880         OverlayStateData *osd = image_get_osd_data(imd);
 881
 882         if (!osd)
 883                 {
 884                 osd = g_new0(OverlayStateData, 1);
 885                 osd->imd = imd;
 886                 osd->idle_id = -1;
 887                 osd->timer_id = -1;
 888                 osd->show = OSD_SHOW_NOTHING;
 889                 osd->histogram = NULL;
 890
 891                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 892                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 893                 image_set_osd_data(imd, osd);
 894
 895                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 896                 }
 897
 898         if (show & OSD_SHOW_HISTOGRAM)
 899                 osd->histogram = histogram_new();
 900         else if (osd->histogram)
 901                 {
 902                 histogram_free(osd->histogram);
 903                 osd->histogram = NULL;
 904                 }
 905
 906         if (show & OSD_SHOW_STATUS)
 907                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 908
 909         if (show != osd->show)
 910                 image_osd_update_schedule(osd, TRUE);
 911
 912         osd->show = show;
 913 }
 914
 915 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 916 {
 917         if (!imd) return;
 918
 919         if (show == OSD_SHOW_NOTHING)
 920                 {
 921                 image_osd_remove(imd);
 922                 return;
 923                 }
 924
 925         image_osd_enable(imd, show);
 926 }
 927
 928 OsdShowFlags image_osd_get(ImageWindow *imd)
 929 {
 930         OverlayStateData *osd = image_get_osd_data(imd);
 931
 932         return osd ? osd->show : OSD_SHOW_NOTHING;
 933 }
 934
 935 /* duration:
 936     0 = hide
 937     1 = show
 938    2+ = show for duration tenths of a second
 939    -1 = use default duration
 940  */
 941 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 942 {
 943         OverlayStateData *osd = image_get_osd_data(imd);
 944
 945         if (!osd) return;
 946
 947         if (flag < IMAGE_OSD_NONE || flag >= IMAGE_OSD_COUNT) return;
 948         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 949         if (duration > 1) duration += 1;
 950
 951         osd->icon_time[flag] = duration;
 952
 953         image_osd_update_schedule(osd, FALSE);
 954         image_osd_timer_schedule(osd);
 955 }