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