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         FileData *fd = image_get_fd(imd);
 287
 288         if (!fd) return NULL;
 289
 290         vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 291
 292         name = image_get_name(imd);
 293         if (name)
 294                 {
 295                 name_escaped = g_markup_escape_text(name, -1);
 296                 }
 297         else
 298                 {
 299                 name_escaped = NULL;
 300                 }
 301
 302         cd = image_get_collection(imd, &info);
 303         if (cd)
 304                 {
 305                 gchar *buf;
 306
 307                 t = g_list_length(cd->list);
 308                 n = g_list_index(cd->list, info) + 1;
 309                 buf = g_markup_escape_text((cd->name) ? cd->name : _("Untitled"), -1);
 310                 ct = g_strdup_printf("<i>%s</i>\n", buf);
 311                 g_free(buf);
 312                 }
 313         else
 314                 {
 315                 lw = layout_find_by_image(imd);
 316                 if (lw)
 317                         {
 318                         if (lw->slideshow)
 319                                 {
 320                                 n = g_list_length(lw->slideshow->list_done);
 321                                 t = n + g_list_length(lw->slideshow->list);
 322                                 if (n == 0) n = t;
 323                                 }
 324                         else
 325                                 {
 326                                 t = layout_list_count(lw, NULL);
 327                                 n = layout_list_get_index(lw, image_get_path(lw->image)) + 1;
 328                                 }
 329                         }
 330                 else if (view_window_find_image(imd, &n, &t))
 331                         {
 332                         n++;
 333                         }
 334                 else
 335                         {
 336                         t = 1;
 337                         n = 1;
 338                         }
 339
 340                 if (n < 1) n = 1;
 341                 if (t < 1) t = 1;
 342
 343                 ct = g_strdup("");
 344                 }
 345
 346         size = text_from_size_abrev(imd->size);
 347         if (!imd->unknown)
 348                 {
 349                 if (imd->delay_flip &&
 350                     imd->il && imd->il->pixbuf &&
 351                     image_get_pixbuf(imd) != imd->il->pixbuf)
 352                         {
 353                         w = gdk_pixbuf_get_width(imd->il->pixbuf);
 354                         h = gdk_pixbuf_get_height(imd->il->pixbuf);
 355                         imgpixbuf = imd->il->pixbuf;
 356                         }
 357                 else
 358                         {
 359                         image_get_image_size(imd, &w, &h);
 360                         imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 361                         }
 362
 363                 if (imgpixbuf && (osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram
 364                               && (!imd->il || imd->il->done))
 365                         with_hist=1;
 366
 367                 g_hash_table_insert(vars, "width", g_strdup_printf("%d", w));
 368                 g_hash_table_insert(vars, "height", g_strdup_printf("%d", h));
 369                 g_hash_table_insert(vars, "res", g_strdup_printf("%d × %d", w, h));
 370                 }
 371
 372         g_hash_table_insert(vars, "collection", g_strdup(ct));
 373         g_hash_table_insert(vars, "number", g_strdup_printf("%d", n));
 374         g_hash_table_insert(vars, "total", g_strdup_printf("%d", t));
 375         g_hash_table_insert(vars, "name", g_strdup(name_escaped));
 376         g_hash_table_insert(vars, "date", g_strdup(text_from_time(imd->mtime)));
 377         g_hash_table_insert(vars, "size", g_strdup(size));
 378         g_hash_table_insert(vars, "zoom", image_zoom_get_as_text(imd));
 379
 380         if (!name_escaped)
 381                 {
 382                 text = g_strdup_printf(_("Untitled"));
 383                 }
 384         else
 385                 {
 386                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 387                 }
 388
 389         g_free(size);
 390         g_free(ct);
 391         g_free(name_escaped);
 392         g_hash_table_destroy(vars);
 393
 394         {
 395                 gint active_marks = 0;
 396                 gint mark;
 397                 gchar *text2;
 398
 399                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 400                         {
 401                         active_marks += fd->marks[mark];
 402                         }
 403
 404                 if (active_marks > 0)
 405                         {
 406                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 407
 408                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 409                                 {
 410                                 g_string_append_printf(buf, fd->marks[mark] ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 411                                 }
 412
 413                         if (*text)
 414                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 415                         else
 416                                 text2 = g_strdup(buf->str);
 417                         g_string_free(buf, TRUE);
 418                         g_free(text);
 419                         text = text2;
 420                         }
 421
 422                 if (with_hist)
 423                         {
 424                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 425                         if (*text)
 426                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 427                         else
 428                                 text2 = g_strdup(escaped_histogram_label);
 429                         g_free(escaped_histogram_label);
 430                         g_free(text);
 431                         text = text2;
 432                         }
 433         }
 434
 435         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 436         pango_layout_set_markup(layout, text, -1);
 437         g_free(text);
 438
 439         pango_layout_get_pixel_size(layout, &width, &height);
 440         /* with empty text width is set to 0, but not height) */
 441         if (width == 0)
 442                 height = 0;
 443         else if (height == 0)
 444                 width = 0;
 445         if (width > 0) width += 10;
 446         if (height > 0) height += 10;
 447
 448         if (with_hist)
 449                 {
 450                 histogram_read(osd->histogram, imgpixbuf);
 451                 if (width < 266) width = 266;
 452                 height += HISTOGRAM_HEIGHT + 5;
 453                 }
 454
 455         if (width > 0 && height > 0)
 456                 {
 457                 /* TODO: make osd color configurable --Zas */
 458                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 459                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 460                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 461                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 462                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 463                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 464                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 465                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 466                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 467
 468                 if (with_hist)
 469                         histogram_draw(osd->histogram, pixbuf, 5, height - HISTOGRAM_HEIGHT - 5 , width - 10, HISTOGRAM_HEIGHT);
 470
 471                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 472         }
 473
 474         g_object_unref(G_OBJECT(layout));
 475
 476         return pixbuf;
 477 }
 478
 479 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 480 {
 481         static GdkPixbuf **icons = NULL;
 482         GdkPixbuf *icon = NULL;
 483
 484         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 485         if (icons[flag]) return icons[flag];
 486
 487         if (osd_icons[flag].key)
 488                 {
 489                 icon = pixbuf_inline(osd_icons[flag].key);
 490                 }
 491
 492         if (!icon)
 493                 {
 494                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 495                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 496                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 497                 switch (flag)
 498                         {
 499                         case IMAGE_OSD_ROTATE_AUTO:
 500                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 501                                                 0, 0, 0, 255,
 502                                                 3, 0, 3, 0);
 503                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 504                                                      20, 9, 14, 15, 14, 3,
 505                                                      0, 0, 0, 255);
 506                                 break;
 507                         case IMAGE_OSD_ROTATE_USER:
 508                                 break;
 509                         case IMAGE_OSD_COLOR:
 510                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 511                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 512                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 513                                 break;
 514                         case IMAGE_OSD_FIRST:
 515                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 516                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 517                                                      12, 5, 18, 11, 6, 11,
 518                                                      0, 0, 0, 255);
 519                                 break;
 520                         case IMAGE_OSD_LAST:
 521                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 522                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 523                                                      12, 18, 6, 12, 18, 12,
 524                                                      0, 0, 0, 255);
 525                                 break;
 526                         case IMAGE_OSD_ICON:
 527                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 528                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 529                                 break;
 530                         default:
 531                                 break;
 532                         }
 533                 }
 534
 535         icons[flag] = icon;
 536
 537         return icon;
 538 }
 539
 540 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 541 {
 542         GdkPixbuf *pixbuf;
 543
 544         if (osd->icon_id[flag]) return;
 545
 546         pixbuf = image_osd_icon_pixbuf(flag);
 547         if (!pixbuf) return;
 548
 549         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 550                                                osd_icons[flag].x, osd_icons[flag].y,
 551                                                TRUE, FALSE);
 552 }
 553
 554 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 555 {
 556         if (osd->icon_id[flag])
 557                 {
 558                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 559                 osd->icon_id[flag] = 0;
 560                 }
 561 }
 562
 563 static gint image_osd_update_cb(gpointer data)
 564 {
 565         OverlayStateData *osd = data;
 566
 567         osd->imd->overlay_show_zoom = FALSE;
 568
 569         if (osd->show & OSD_SHOW_INFO)
 570                 {
 571                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 572                         {
 573                         GdkPixbuf *pixbuf;
 574
 575                         pixbuf = image_osd_info_render(osd);
 576                         if (pixbuf)
 577                                 {
 578                                 if (osd->ovl_info == 0)
 579                                         {
 580                                         osd->ovl_info = image_overlay_add(osd->imd, pixbuf,
 581                                                                           OSD_INFO_X, OSD_INFO_Y, TRUE, FALSE);
 582                                         }
 583                                 else
 584                                         {
 585                                         image_overlay_set(osd->imd, osd->ovl_info, pixbuf, OSD_INFO_X, OSD_INFO_Y);
 586                                         }
 587                                 g_object_unref(pixbuf);
 588                                 }
 589                         else if (osd->ovl_info)
 590                                 {
 591                                 image_overlay_remove(osd->imd, osd->ovl_info);
 592                                 osd->ovl_info = 0;
 593                                 }
 594                         }
 595                 }
 596         else
 597                 {
 598                 if (osd->ovl_info)
 599                         {
 600                         image_overlay_remove(osd->imd, osd->ovl_info);
 601                         osd->ovl_info = 0;
 602                         }
 603                 }
 604
 605         if (osd->show & OSD_SHOW_STATUS)
 606                 {
 607                 gint i;
 608
 609                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 610                         {
 611                         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 612                                 {
 613                                 if (osd_icons[i].reset) osd->icon_time[i] = 0;
 614                                 }
 615                         }
 616
 617                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 618                         {
 619                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 620                         image_osd_timer_schedule(osd);
 621                         }
 622
 623                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 624                         {
 625                         gint n = 0;
 626
 627                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 628                                 {
 629                                 n = 1;
 630                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 631                                 }
 632
 633                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 634                         image_osd_timer_schedule(osd);
 635                         }
 636
 637                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 638                         {
 639                         if (osd->icon_time[i] > 0)
 640                                 {
 641                                 image_osd_icon_show(osd, i);
 642                                 }
 643                         else
 644                                 {
 645                                 image_osd_icon_hide(osd, i);
 646                                 }
 647                         }
 648                 }
 649         else
 650                 {
 651                 gint i;
 652
 653                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 654                         {
 655                         image_osd_icon_hide(osd, i);
 656                         }
 657                 }
 658
 659         if (osd->imd->il && osd->imd->il->done)
 660                 osd->changed_states = IMAGE_STATE_NONE;
 661         osd->idle_id = -1;
 662         return FALSE;
 663 }
 664
 665 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 666 {
 667         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 668
 669         if (osd->idle_id == -1)
 670                 {
 671                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 672                 }
 673 }
 674
 675 void image_osd_update(ImageWindow *imd)
 676 {
 677         OverlayStateData *osd = image_get_osd_data(imd);
 678
 679         if (!osd) return;
 680
 681         image_osd_update_schedule(osd, TRUE);
 682 }
 683
 684 static gint image_osd_timer_cb(gpointer data)
 685 {
 686         OverlayStateData *osd = data;
 687         gint done = TRUE;
 688         gint changed = FALSE;
 689         gint i;
 690
 691         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 692                 {
 693                 if (osd->icon_time[i] > 1)
 694                         {
 695                         osd->icon_time[i]--;
 696                         if (osd->icon_time[i] < 2)
 697                                 {
 698                                 osd->icon_time[i] = 0;
 699                                 changed = TRUE;
 700                                 }
 701                         else
 702                                 {
 703                                 done = FALSE;
 704                                 }
 705                         }
 706                 }
 707
 708         if (changed) image_osd_update_schedule(osd, FALSE);
 709
 710         if (done)
 711                 {
 712                 osd->timer_id = -1;
 713                 return FALSE;
 714                 }
 715
 716         return TRUE;
 717 }
 718
 719 static void image_osd_timer_schedule(OverlayStateData *osd)
 720 {
 721         if (osd->timer_id == -1)
 722                 {
 723                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 724                 }
 725 }
 726
 727 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 728 {
 729         OverlayStateData *osd = data;
 730
 731         osd->changed_states |= state;
 732         image_osd_update_schedule(osd, FALSE);
 733 }
 734
 735 static void image_osd_free(OverlayStateData *osd)
 736 {
 737         if (!osd) return;
 738
 739         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 740         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 741
 742         if (osd->imd)
 743                 {
 744                 gint i;
 745
 746                 image_set_osd_data(osd->imd, NULL);
 747                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 748
 749                 image_set_state_func(osd->imd, NULL, NULL);
 750                 image_overlay_remove(osd->imd, osd->ovl_info);
 751
 752                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 753                         {
 754                         image_osd_icon_hide(osd, i);
 755                         }
 756                 }
 757
 758         if (osd->histogram) histogram_free(osd->histogram);
 759
 760         g_free(osd);
 761 }
 762
 763 static void image_osd_remove(ImageWindow *imd)
 764 {
 765         OverlayStateData *osd = image_get_osd_data(imd);
 766
 767         if (osd) image_osd_free(osd);
 768 }
 769
 770 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 771 {
 772         OverlayStateData *osd = data;
 773
 774         osd->imd = NULL;
 775         image_osd_free(osd);
 776 }
 777
 778 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 779 {
 780         OverlayStateData *osd = image_get_osd_data(imd);
 781
 782         if (!osd)
 783                 {
 784                 osd = g_new0(OverlayStateData, 1);
 785                 osd->imd = imd;
 786                 osd->idle_id = -1;
 787                 osd->timer_id = -1;
 788                 osd->show = OSD_SHOW_NOTHING;
 789                 osd->histogram = NULL;
 790
 791                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 792                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 793                 image_set_osd_data(imd, osd);
 794
 795                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 796                 }
 797
 798         if (show & OSD_SHOW_HISTOGRAM)
 799                 osd->histogram = histogram_new();
 800         else if (osd->histogram)
 801                 {
 802                 histogram_free(osd->histogram);
 803                 osd->histogram = NULL;
 804                 }
 805
 806         if (show & OSD_SHOW_STATUS)
 807                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 808
 809         if (show != osd->show)
 810                 image_osd_update_schedule(osd, TRUE);
 811
 812         osd->show = show;
 813 }
 814
 815 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 816 {
 817         if (!imd) return;
 818
 819         if (show == OSD_SHOW_NOTHING)
 820                 {
 821                 image_osd_remove(imd);
 822                 return;
 823                 }
 824
 825         image_osd_enable(imd, show);
 826 }
 827
 828 gint image_osd_get(ImageWindow *imd, OsdShowFlags *show)
 829 {
 830         OverlayStateData *osd = image_get_osd_data(imd);
 831
 832         if (!osd)
 833                 {
 834                 if (show) *show = OSD_SHOW_NOTHING;
 835                 return FALSE;
 836                 }
 837
 838         if (show) *show = osd->show;
 839
 840         return TRUE;
 841 }
 842
 843 /* duration:
 844     0 = hide
 845     1 = show
 846    2+ = show for duration tenths of a second
 847    -1 = use default duration
 848  */
 849 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 850 {
 851         OverlayStateData *osd = image_get_osd_data(imd);
 852
 853         if (!osd) return;
 854
 855         if (flag < IMAGE_OSD_NONE || flag >= IMAGE_OSD_COUNT) return;
 856         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 857         if (duration > 1) duration += 1;
 858
 859         osd->icon_time[flag] = duration;
 860
 861         image_osd_update_schedule(osd, FALSE);
 862         image_osd_timer_schedule(osd);
 863 }