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 "filelist.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 typedef struct _OverlayStateData OverlayStateData;
  34 struct _OverlayStateData {
  35         ImageWindow *imd;
  36         ImageState changed_states;
  37
  38         gint show_info;
  39         gint show_status;
  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)
 111                 {
 112                 histogram_set_channel(imd->histogram, (histogram_get_channel(imd->histogram) +1)%HCHAN_COUNT);
 113                 image_osd_update(imd);
 114                 }
 115 }
 116
 117 void image_osd_histogram_log_toggle(ImageWindow *imd)
 118 {
 119         if (imd->histogram)
 120                 {
 121                 histogram_set_mode(imd->histogram, !histogram_get_mode(imd->histogram));
 122                 image_osd_update(imd);
 123                 }
 124 }
 125
 126 void image_osd_toggle(ImageWindow *imd)
 127 {
 128         gint info;
 129
 130         if (image_osd_get(imd, &info, NULL) && info)
 131                 {
 132                 if (image_osd_histogram_onoff_status(imd))
 133                         {
 134                         image_osd_histogram_onoff_toggle(imd, 0);
 135                         image_osd_update(imd);
 136                         }
 137                 else
 138                         {
 139                         image_osd_set(imd, FALSE, FALSE);
 140                         }
 141                 }
 142         else
 143                 {
 144                 image_osd_set(imd, TRUE, TRUE);
 145                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 146                 image_osd_histogram_onoff_toggle(imd, 1);
 147                 image_osd_update(imd);
 148                 }
 149 }
 150
 151 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 152 {
 153         gchar delim = '%', imp = '|', sep[] = " - ";
 154         gchar *start, *end;
 155         gint pos, prev;
 156         gint last;
 157         gchar *name, *data;
 158         GString *new;
 159         gchar *ret;
 160         ExifData *exif;
 161
 162         if (!str || !*str) return g_strdup("");
 163
 164         new = g_string_new(str);
 165
 166         exif = exif_read_fd(imd->image_fd);
 167         prev = 0;
 168         last = FALSE;
 169
 170         while (TRUE)
 171                 {
 172                 gint was_digit = 0;
 173                 gint limit = 0;
 174                 gchar *trunc = NULL;
 175                 gchar *p;
 176
 177                 start = strchr(new->str, delim);
 178                 if (!start)
 179                         break;
 180                 end = strchr(start+1, delim);
 181                 if (!end)
 182                         break;
 183
 184                 for (p = end; p > start; p--)
 185                         {
 186                         if (*p == ':' && was_digit)
 187                                 {
 188                                 trunc = p;
 189                                 break;
 190                                 }
 191                         was_digit = g_ascii_isdigit(*p);
 192                         }
 193
 194                 if (trunc) limit = atoi(trunc+1);
 195
 196                 name = g_strndup(start+1, ((limit > 0) ? trunc : end)-start-1);
 197
 198                 pos = start-new->str;
 199                 data = g_strdup(g_hash_table_lookup(vars, name));
 200                 if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 201                 if (!data && exif)
 202                         data = exif_get_data_as_text(exif, name);
 203                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 204                         {
 205                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 206                         g_free(data);
 207                         data = new_data;
 208                         }
 209                 if (data)
 210                         {
 211                         /* Since we use pango markup to display, we need to escape here */
 212                         gchar *escaped = g_markup_escape_text(data, -1);
 213                         g_free(data);
 214                         data = escaped;
 215                         }
 216                 g_string_erase(new, pos, end-start+1);
 217                 if (data)
 218                         g_string_insert(new, pos, data);
 219                 if (pos-prev == 2 && new->str[pos-1] == imp)
 220                         {
 221                         g_string_erase(new, --pos, 1);
 222                         if (last && data)
 223                                 {
 224                                 g_string_insert(new, pos, sep);
 225                                 pos += strlen(sep);
 226                                 }
 227                         }
 228
 229                 prev = data ? pos+strlen(data)-1 : pos-1;
 230                 last = data ? TRUE : last;
 231                 g_free(name);
 232                 g_free(data);
 233                 }
 234
 235         /* search and destroy empty lines */
 236         end = new->str;
 237         while ((start = strchr(end, '\n')))
 238                 {
 239                 end = start;
 240                 while (*++(end) == '\n')
 241                         ;
 242                 g_string_erase(new, start-new->str, end-start-1);
 243                 }
 244
 245         g_strchomp(new->str);
 246
 247         ret = new->str;
 248         g_string_free(new, FALSE);
 249
 250         return ret;
 251 }
 252
 253 static GdkPixbuf *image_osd_info_render(ImageWindow *imd)
 254 {
 255         GdkPixbuf *pixbuf = NULL;
 256         gint width, height;
 257         PangoLayout *layout;
 258         const gchar *name;
 259         gchar *name_escaped;
 260         gchar *text;
 261         gchar *size;
 262         gint n, t;
 263         CollectionData *cd;
 264         CollectInfo *info;
 265         GdkPixbuf *imgpixbuf = NULL;
 266         LayoutWindow *lw = NULL;
 267         gint with_hist = 0;
 268         gchar *ct;
 269         gint w, h;
 270         GHashTable *vars;
 271
 272         vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 273
 274         name = image_get_name(imd);
 275         if (name)
 276                 {
 277                 name_escaped = g_markup_escape_text(name, -1);
 278                 }
 279         else
 280                 {
 281                 name_escaped = NULL;
 282                 }
 283
 284         cd = image_get_collection(imd, &info);
 285         if (cd)
 286                 {
 287                 gchar *buf;
 288
 289                 t = g_list_length(cd->list);
 290                 n = g_list_index(cd->list, info) + 1;
 291                 buf = g_markup_escape_text((cd->name) ? cd->name : _("Untitled"), -1);
 292                 ct = g_strdup_printf("<i>%s</i>\n", buf);
 293                 g_free(buf);
 294                 }
 295         else
 296                 {
 297                 lw = layout_find_by_image(imd);
 298                 if (lw)
 299                         {
 300                         if (lw->slideshow)
 301                                 {
 302                                 n = g_list_length(lw->slideshow->list_done);
 303                                 t = n + g_list_length(lw->slideshow->list);
 304                                 if (n == 0) n = t;
 305                                 }
 306                         else
 307                                 {
 308                                 t = layout_list_count(lw, NULL);
 309                                 n = layout_list_get_index(lw, image_get_path(lw->image)) + 1;
 310                                 }
 311                         }
 312                 else if (view_window_find_image(imd, &n, &t))
 313                         {
 314                         n++;
 315                         }
 316                 else
 317                         {
 318                         t = 1;
 319                         n = 1;
 320                         }
 321
 322                 if (n < 1) n = 1;
 323                 if (t < 1) t = 1;
 324
 325                 ct = g_strdup("");
 326                 }
 327
 328         size = text_from_size_abrev(imd->size);
 329         if (!imd->unknown)
 330                 {
 331                 if (imd->delay_flip &&
 332                     imd->il && imd->il->pixbuf &&
 333                     image_get_pixbuf(imd) != imd->il->pixbuf)
 334                         {
 335                         w = gdk_pixbuf_get_width(imd->il->pixbuf);
 336                         h = gdk_pixbuf_get_height(imd->il->pixbuf);
 337                         imgpixbuf = imd->il->pixbuf;
 338                         }
 339                 else
 340                         {
 341                         image_get_image_size(imd, &w, &h);
 342                         imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 343                         }
 344
 345                 if (imgpixbuf && imd->histogram_enabled && imd->histogram
 346                               && (!imd->il || imd->il->done))
 347                         with_hist=1;
 348
 349                 g_hash_table_insert(vars, "width", g_strdup_printf("%d", w));
 350                 g_hash_table_insert(vars, "height", g_strdup_printf("%d", h));
 351                 g_hash_table_insert(vars, "res", g_strdup_printf("%d × %d", w, h));
 352                 }
 353
 354         g_hash_table_insert(vars, "collection", g_strdup(ct));
 355         g_hash_table_insert(vars, "number", g_strdup_printf("%d", n));
 356         g_hash_table_insert(vars, "total", g_strdup_printf("%d", t));
 357         g_hash_table_insert(vars, "name", g_strdup(name_escaped));
 358         g_hash_table_insert(vars, "date", g_strdup(text_from_time(imd->mtime)));
 359         g_hash_table_insert(vars, "size", g_strdup(size));
 360         g_hash_table_insert(vars, "zoom", image_zoom_get_as_text(imd));
 361
 362         if (!name_escaped)
 363                 {
 364                 text = g_strdup_printf(_("Untitled"));
 365                 }
 366         else
 367                 {
 368                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 369                 }
 370
 371         g_free(size);
 372         g_free(ct);
 373         g_free(name_escaped);
 374         g_hash_table_destroy(vars);
 375
 376         {
 377         FileData *fd = image_get_fd(imd);
 378
 379         if (fd) /* fd may be null after file deletion */
 380                 {
 381                 gint active_marks = 0;
 382                 gint mark;
 383                 gchar *text2;
 384
 385                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 386                         {
 387                         active_marks += fd->marks[mark];
 388                         }
 389
 390                 if (active_marks > 0)
 391                         {
 392                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 393
 394                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 395                                 {
 396                                 g_string_append_printf(buf, fd->marks[mark] ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 397                                 }
 398
 399                         if (*text)
 400                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 401                         else
 402                                 text2 = g_strdup(buf->str);
 403                         g_string_free(buf, TRUE);
 404                         g_free(text);
 405                         text = text2;
 406                         }
 407
 408                 if (with_hist)
 409                         {
 410                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(imd->histogram), -1);
 411                         if (*text)
 412                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 413                         else
 414                                 text2 = g_strdup(escaped_histogram_label);
 415                         g_free(escaped_histogram_label);
 416                         g_free(text);
 417                         text = text2;
 418                         }
 419                 }
 420         }
 421
 422         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 423         pango_layout_set_markup(layout, text, -1);
 424         g_free(text);
 425
 426         pango_layout_get_pixel_size(layout, &width, &height);
 427         /* with empty text width is set to 0, but not height) */
 428         if (width == 0)
 429                 height = 0;
 430         else if (height == 0)
 431                 width = 0;
 432         if (width > 0) width += 10;
 433         if (height > 0) height += 10;
 434
 435         if (with_hist)
 436                 {
 437                 histogram_read(imd->histogram, imgpixbuf);
 438                 if (width < 266) width = 266;
 439                 height += HISTOGRAM_HEIGHT + 5;
 440                 }
 441
 442         if (width > 0 && height > 0)
 443                 {
 444                 /* TODO: make osd color configurable --Zas */
 445                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 446                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 447                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 448                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 449                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 450                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 451                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 452                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 453                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 454
 455                 if (with_hist)
 456                         histogram_draw(imd->histogram, pixbuf, 5, height - HISTOGRAM_HEIGHT - 5 , width - 10, HISTOGRAM_HEIGHT);
 457
 458                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 459         }
 460
 461         g_object_unref(G_OBJECT(layout));
 462
 463         return pixbuf;
 464 }
 465
 466 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 467 {
 468         static GdkPixbuf **icons = NULL;
 469         GdkPixbuf *icon = NULL;
 470
 471         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 472         if (icons[flag]) return icons[flag];
 473
 474         if (osd_icons[flag].key)
 475                 {
 476                 icon = pixbuf_inline(osd_icons[flag].key);
 477                 }
 478
 479         if (!icon)
 480                 {
 481                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 482                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 483                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 484                 switch (flag)
 485                         {
 486                         case IMAGE_OSD_ROTATE_AUTO:
 487                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 488                                                 0, 0, 0, 255,
 489                                                 3, 0, 3, 0);
 490                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 491                                                      20, 9, 14, 15, 14, 3,
 492                                                      0, 0, 0, 255);
 493                                 break;
 494                         case IMAGE_OSD_ROTATE_USER:
 495                                 break;
 496                         case IMAGE_OSD_COLOR:
 497                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 498                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 499                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 500                                 break;
 501                         case IMAGE_OSD_FIRST:
 502                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 503                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 504                                                      12, 5, 18, 11, 6, 11,
 505                                                      0, 0, 0, 255);
 506                                 break;
 507                         case IMAGE_OSD_LAST:
 508                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 509                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 510                                                      12, 18, 6, 12, 18, 12,
 511                                                      0, 0, 0, 255);
 512                                 break;
 513                         case IMAGE_OSD_ICON:
 514                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 515                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 516                                 break;
 517                         default:
 518                                 break;
 519                         }
 520                 }
 521
 522         icons[flag] = icon;
 523
 524         return icon;
 525 }
 526
 527 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 528 {
 529         GdkPixbuf *pixbuf;
 530
 531         if (osd->icon_id[flag]) return;
 532
 533         pixbuf = image_osd_icon_pixbuf(flag);
 534         if (!pixbuf) return;
 535
 536         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 537                                                osd_icons[flag].x, osd_icons[flag].y,
 538                                                TRUE, FALSE);
 539 }
 540
 541 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 542 {
 543         if (osd->icon_id[flag])
 544                 {
 545                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 546                 osd->icon_id[flag] = 0;
 547                 }
 548 }
 549
 550 static gint image_osd_update_cb(gpointer data)
 551 {
 552         OverlayStateData *osd = data;
 553
 554         osd->imd->overlay_show_zoom = FALSE;
 555
 556         if (osd->show_info)
 557                 {
 558                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 559                         {
 560                         GdkPixbuf *pixbuf;
 561
 562                         pixbuf = image_osd_info_render(osd->imd);
 563                         if (pixbuf)
 564                                 {
 565                                 if (osd->ovl_info == 0)
 566                                         {
 567                                         osd->ovl_info = image_overlay_add(osd->imd, pixbuf,
 568                                                                           OSD_INFO_X, OSD_INFO_Y, TRUE, FALSE);
 569                                         }
 570                                 else
 571                                         {
 572                                         image_overlay_set(osd->imd, osd->ovl_info, pixbuf, OSD_INFO_X, OSD_INFO_Y);
 573                                         }
 574                                 g_object_unref(pixbuf);
 575                                 }
 576                         else if (osd->ovl_info)
 577                                 {
 578                                 image_overlay_remove(osd->imd, osd->ovl_info);
 579                                 osd->ovl_info = 0;
 580                                 }
 581                         }
 582                 }
 583         else
 584                 {
 585                 if (osd->ovl_info)
 586                         {
 587                         image_overlay_remove(osd->imd, osd->ovl_info);
 588                         osd->ovl_info = 0;
 589                         }
 590                 }
 591
 592         if (osd->show_status)
 593                 {
 594                 gint i;
 595
 596                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 597                         {
 598                         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 599                                 {
 600                                 if (osd_icons[i].reset) osd->icon_time[i] = 0;
 601                                 }
 602                         }
 603
 604                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 605                         {
 606                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 607                         image_osd_timer_schedule(osd);
 608                         }
 609
 610                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 611                         {
 612                         gint n = 0;
 613
 614                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 615                                 {
 616                                 n = 1;
 617                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 618                                 }
 619
 620                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 621                         image_osd_timer_schedule(osd);
 622                         }
 623
 624                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 625                         {
 626                         if (osd->icon_time[i] > 0)
 627                                 {
 628                                 image_osd_icon_show(osd, i);
 629                                 }
 630                         else
 631                                 {
 632                                 image_osd_icon_hide(osd, i);
 633                                 }
 634                         }
 635                 }
 636         else
 637                 {
 638                 gint i;
 639
 640                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 641                         {
 642                         image_osd_icon_hide(osd, i);
 643                         }
 644                 }
 645
 646         if (osd->imd->il && osd->imd->il->done)
 647                 osd->changed_states = IMAGE_STATE_NONE;
 648         osd->idle_id = -1;
 649         return FALSE;
 650 }
 651
 652 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 653 {
 654         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 655
 656         if (osd->idle_id == -1)
 657                 {
 658                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 659                 }
 660 }
 661
 662 void image_osd_update(ImageWindow *imd)
 663 {
 664         OverlayStateData *osd;
 665
 666         if (!imd) return;
 667
 668         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 669         if (!osd) return;
 670
 671         image_osd_update_schedule(osd, TRUE);
 672 }
 673
 674 static gint image_osd_timer_cb(gpointer data)
 675 {
 676         OverlayStateData *osd = data;
 677         gint done = TRUE;
 678         gint changed = FALSE;
 679         gint i;
 680
 681         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 682                 {
 683                 if (osd->icon_time[i] > 1)
 684                         {
 685                         osd->icon_time[i]--;
 686                         if (osd->icon_time[i] < 2)
 687                                 {
 688                                 osd->icon_time[i] = 0;
 689                                 changed = TRUE;
 690                                 }
 691                         else
 692                                 {
 693                                 done = FALSE;
 694                                 }
 695                         }
 696                 }
 697
 698         if (changed) image_osd_update_schedule(osd, FALSE);
 699
 700         if (done)
 701                 {
 702                 osd->timer_id = -1;
 703                 return FALSE;
 704                 }
 705
 706         return TRUE;
 707 }
 708
 709 static void image_osd_timer_schedule(OverlayStateData *osd)
 710 {
 711         if (osd->timer_id == -1)
 712                 {
 713                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 714                 }
 715 }
 716
 717 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 718 {
 719         OverlayStateData *osd = data;
 720
 721         osd->changed_states |= state;
 722         image_osd_update_schedule(osd, FALSE);
 723 }
 724
 725 static void image_osd_free(OverlayStateData *osd)
 726 {
 727         if (!osd) return;
 728
 729         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 730         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 731
 732         if (osd->imd)
 733                 {
 734                 gint i;
 735
 736                 g_object_set_data(G_OBJECT(osd->imd->pr), "IMAGE_OVERLAY_DATA", NULL);
 737                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 738
 739                 image_set_state_func(osd->imd, NULL, NULL);
 740                 image_overlay_remove(osd->imd, osd->ovl_info);
 741
 742                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 743                         {
 744                         image_osd_icon_hide(osd, i);
 745                         }
 746                 }
 747
 748         g_free(osd);
 749 }
 750
 751 static void image_osd_remove(ImageWindow *imd)
 752 {
 753         OverlayStateData *osd;
 754
 755         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 756         image_osd_free(osd);
 757 }
 758
 759 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 760 {
 761         OverlayStateData *osd = data;
 762
 763         osd->imd = NULL;
 764         image_osd_free(osd);
 765 }
 766
 767 static void image_osd_enable(ImageWindow *imd, gint info, gint status)
 768 {
 769         OverlayStateData *osd;
 770
 771         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 772         if (!osd)
 773                 {
 774                 osd = g_new0(OverlayStateData, 1);
 775                 osd->imd = imd;
 776                 osd->idle_id = -1;
 777                 osd->timer_id = -1;
 778
 779                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 780                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 781                 g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 782
 783                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 784                 }
 785
 786         if (osd->show_info != info ||
 787             osd->show_status != status)
 788                 {
 789                 osd->show_info = info;
 790                 osd->show_status = status;
 791
 792                 image_osd_update_schedule(osd, TRUE);
 793                 }
 794 }
 795
 796 void image_osd_set(ImageWindow *imd, gint info, gint status)
 797 {
 798         if (!imd) return;
 799
 800         if (!info && !status)
 801                 {
 802                 image_osd_remove(imd);
 803                 return;
 804                 }
 805
 806         image_osd_enable(imd, info, status);
 807 }
 808
 809 gint image_osd_get(ImageWindow *imd, gint *info, gint *status)
 810 {
 811         OverlayStateData *osd;
 812
 813         if (!imd) return FALSE;
 814
 815         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 816         if (!osd) return FALSE;
 817
 818         if (info) *info = osd->show_info;
 819         if (status) *status = osd->show_status;
 820
 821         return TRUE;
 822 }
 823
 824 /* duration:
 825     0 = hide
 826     1 = show
 827    2+ = show for duration tenths of a second
 828    -1 = use default duration
 829  */
 830 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 831 {
 832         OverlayStateData *osd;
 833
 834         if (!imd) return;
 835
 836         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 837         if (!osd) return;
 838
 839         if (flag < IMAGE_OSD_NONE || flag >= IMAGE_OSD_COUNT) return;
 840         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 841         if (duration > 1) duration += 1;
 842
 843         osd->icon_time[flag] = duration;
 844
 845         image_osd_update_schedule(osd, FALSE);
 846         image_osd_timer_schedule(osd);
 847 }