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