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