src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include "main.h"
  14 #include "image-overlay.h"
  15
  16 #include "collect.h"
  17 #include "debug.h"
  18 #include "exif.h"
  19 #include "filedata.h"
  20 #include "image.h"
  21 #include "img-view.h"
  22 #include "layout.h"
  23 #include "pixbuf-renderer.h"
  24 #include "pixbuf_util.h"
  25 #include "histogram.h"
  26
  27
  28 /*
  29  *----------------------------------------------------------------------------
  30  * image overlay
  31  *----------------------------------------------------------------------------
  32  */
  33
  34
  35 typedef struct _OverlayStateData OverlayStateData;
  36 struct _OverlayStateData {
  37         ImageWindow *imd;
  38         ImageState changed_states;
  39
  40         Histogram *histogram;
  41
  42         OsdShowFlags show;
  43
  44         gint ovl_info;
  45
  46         gint icon_time[IMAGE_OSD_COUNT];
  47         gint icon_id[IMAGE_OSD_COUNT];
  48
  49         gint idle_id;
  50         gint timer_id;
  51         gulong destroy_id;
  52 };
  53
  54
  55 typedef struct _OSDIcon OSDIcon;
  56 struct _OSDIcon {
  57         gint reset;     /* reset on new image */
  58         gint x;         /* x, y offset */
  59         gint y;
  60         gchar *key;     /* inline pixbuf */
  61 };
  62
  63 static OSDIcon osd_icons[] = {
  64         {  TRUE,   0,   0, NULL },                      /* none */
  65         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  66         {  TRUE, -10, -10, NULL },                      /* user rotated */
  67         {  TRUE, -40, -10, NULL },                      /* color embedded */
  68         {  TRUE, -70, -10, NULL },                      /* first image */
  69         {  TRUE, -70, -10, NULL },                      /* last image */
  70         { FALSE, -70, -10, NULL },                      /* osd enabled */
  71         { FALSE, 0, 0, NULL }
  72 };
  73
  74 #define OSD_DATA "overlay-data"
  75
  76 #define OSD_INFO_X 10
  77 #define OSD_INFO_Y -10
  78
  79 #define IMAGE_OSD_DEFAULT_DURATION 30
  80
  81 #define HISTOGRAM_HEIGHT 140
  82 #define HISTOGRAM_WIDTH  256
  83
  84 static void image_osd_timer_schedule(OverlayStateData *osd);
  85
  86
  87 void set_default_image_overlay_template_string(ConfOptions *options)
  88 {
  89         if (options->image_overlay.common.template_string) g_free(options->image_overlay.common.template_string);
  90         options->image_overlay.common.template_string = g_strdup(DEFAULT_OVERLAY_INFO);
  91 }
  92
  93 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
  94 {
  95         OverlayStateData *osd;
  96
  97         if (!imd) return NULL;
  98
  99         g_assert(imd->pr);
 100
 101         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 102         return osd;
 103 }
 104
 105 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 106 {
 107         g_assert(imd);
 108         g_assert(imd->pr);
 109         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 110 }
 111
 112 /*
 113  *----------------------------------------------------------------------------
 114  * image histogram
 115  *----------------------------------------------------------------------------
 116  */
 117
 118
 119 void image_osd_histogram_chan_toggle(ImageWindow *imd)
 120 {
 121         OverlayStateData *osd = image_get_osd_data(imd);
 122
 123         if (!osd || !osd->histogram) return;
 124
 125         histogram_set_channel(osd->histogram, (histogram_get_channel(osd->histogram) +1)%HCHAN_COUNT);
 126         image_osd_update(imd);
 127 }
 128
 129 void image_osd_histogram_log_toggle(ImageWindow *imd)
 130 {
 131         OverlayStateData *osd = image_get_osd_data(imd);
 132
 133         if (!osd || !osd->histogram) return;
 134
 135         histogram_set_mode(osd->histogram, !histogram_get_mode(osd->histogram));
 136         image_osd_update(imd);
 137 }
 138
 139 void image_osd_toggle(ImageWindow *imd)
 140 {
 141         OverlayStateData *osd;
 142
 143         if (!imd) return;
 144
 145         osd = image_get_osd_data(imd);
 146         if (!osd)
 147                 {
 148                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 149                 return;
 150                 }
 151
 152         if (osd->show != OSD_SHOW_NOTHING)
 153                 {
 154                 if (osd->show & OSD_SHOW_HISTOGRAM)
 155                         {
 156                         image_osd_set(imd, OSD_SHOW_NOTHING);
 157                         }
 158                 else
 159                         {
 160                         image_osd_set(imd, osd->show | OSD_SHOW_HISTOGRAM);
 161                         }
 162                 }
 163 }
 164
 165 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 166 {
 167         gchar delim = '%', imp = '|', sep[] = " - ";
 168         gchar *start, *end;
 169         gint pos, prev;
 170         gint last;
 171         gchar *name, *data;
 172         GString *new;
 173         gchar *ret;
 174         ExifData *exif;
 175
 176         if (!str || !*str) return g_strdup("");
 177
 178         new = g_string_new(str);
 179
 180         exif = exif_read_fd(imd->image_fd);
 181         prev = 0;
 182         last = FALSE;
 183
 184         while (TRUE)
 185                 {
 186                 gint was_digit = 0;
 187                 gint limit = 0;
 188                 gchar *trunc = NULL;
 189                 gchar *p;
 190
 191                 start = strchr(new->str, delim);
 192                 if (!start)
 193                         break;
 194                 end = strchr(start+1, delim);
 195                 if (!end)
 196                         break;
 197
 198                 for (p = end; p > start; p--)
 199                         {
 200                         if (*p == ':' && was_digit)
 201                                 {
 202                                 trunc = p;
 203                                 break;
 204                                 }
 205                         was_digit = g_ascii_isdigit(*p);
 206                         }
 207
 208                 if (trunc) limit = atoi(trunc+1);
 209
 210                 name = g_strndup(start+1, ((limit > 0) ? trunc : end)-start-1);
 211
 212                 pos = start-new->str;
 213                 data = g_strdup(g_hash_table_lookup(vars, name));
 214                 if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 215                 if (!data && exif)
 216                         data = exif_get_data_as_text(exif, name);
 217                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 218                         {
 219                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 220                         g_free(data);
 221                         data = new_data;
 222                         }
 223                 if (data)
 224                         {
 225                         /* Since we use pango markup to display, we need to escape here */
 226                         gchar *escaped = g_markup_escape_text(data, -1);
 227                         g_free(data);
 228                         data = escaped;
 229                         }
 230                 g_string_erase(new, pos, end-start+1);
 231                 if (data)
 232                         g_string_insert(new, pos, data);
 233                 if (pos-prev == 2 && new->str[pos-1] == imp)
 234                         {
 235                         g_string_erase(new, --pos, 1);
 236                         if (last && data)
 237                                 {
 238                                 g_string_insert(new, pos, sep);
 239                                 pos += strlen(sep);
 240                                 }
 241                         }
 242
 243                 prev = data ? pos+strlen(data)-1 : pos-1;
 244                 last = data ? TRUE : last;
 245                 g_free(name);
 246                 g_free(data);
 247                 }
 248
 249         exif_free(exif);
 250         /* search and destroy empty lines */
 251         end = new->str;
 252         while ((start = strchr(end, '\n')))
 253                 {
 254                 end = start;
 255                 while (*++(end) == '\n')
 256                         ;
 257                 g_string_erase(new, start-new->str, end-start-1);
 258                 }
 259
 260         g_strchomp(new->str);
 261
 262         ret = new->str;
 263         g_string_free(new, FALSE);
 264
 265         return ret;
 266 }
 267
 268 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 269 {
 270         GdkPixbuf *pixbuf = NULL;
 271         gint width, height;
 272         PangoLayout *layout;
 273         const gchar *name;
 274         gchar *name_escaped;
 275         gchar *text;
 276         gchar *size;
 277         gint n, t;
 278         CollectionData *cd;
 279         CollectInfo *info;
 280         GdkPixbuf *imgpixbuf = NULL;
 281         LayoutWindow *lw = NULL;
 282         gint with_hist = 0;
 283         gchar *ct;
 284         gint w, h;
 285         GHashTable *vars;
 286         ImageWindow *imd = osd->imd;
 287         FileData *fd = image_get_fd(imd);
 288
 289         if (!fd) return NULL;
 290
 291         vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 292
 293         name = image_get_name(imd);
 294         if (name)
 295                 {
 296                 name_escaped = g_markup_escape_text(name, -1);
 297                 }
 298         else
 299                 {
 300                 name_escaped = NULL;
 301                 }
 302
 303         cd = image_get_collection(imd, &info);
 304         if (cd)
 305                 {
 306                 gchar *buf;
 307
 308                 t = g_list_length(cd->list);
 309                 n = g_list_index(cd->list, info) + 1;
 310                 buf = g_markup_escape_text((cd->name) ? cd->name : _("Untitled"), -1);
 311                 ct = g_strdup_printf("<i>%s</i>\n", buf);
 312                 g_free(buf);
 313                 }
 314         else
 315                 {
 316                 lw = layout_find_by_image(imd);
 317                 if (lw)
 318                         {
 319                         if (lw->slideshow)
 320                                 {
 321                                 n = g_list_length(lw->slideshow->list_done);
 322                                 t = n + g_list_length(lw->slideshow->list);
 323                                 if (n == 0) n = t;
 324                                 }
 325                         else
 326                                 {
 327                                 t = layout_list_count(lw, NULL);
 328                                 n = layout_list_get_index(lw, image_get_path(lw->image)) + 1;
 329                                 }
 330                         }
 331                 else if (view_window_find_image(imd, &n, &t))
 332                         {
 333                         n++;
 334                         }
 335                 else
 336                         {
 337                         t = 1;
 338                         n = 1;
 339                         }
 340
 341                 if (n < 1) n = 1;
 342                 if (t < 1) t = 1;
 343
 344                 ct = g_strdup("");
 345                 }
 346
 347         size = text_from_size_abrev(imd->size);
 348         if (!imd->unknown)
 349                 {
 350                 if (imd->delay_flip &&
 351                     imd->il && imd->il->pixbuf &&
 352                     image_get_pixbuf(imd) != imd->il->pixbuf)
 353                         {
 354                         w = gdk_pixbuf_get_width(imd->il->pixbuf);
 355                         h = gdk_pixbuf_get_height(imd->il->pixbuf);
 356                         imgpixbuf = imd->il->pixbuf;
 357                         }
 358                 else
 359                         {
 360                         image_get_image_size(imd, &w, &h);
 361                         imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 362                         }
 363
 364                 if (imgpixbuf && (osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram
 365                               && (!imd->il || imd->il->done))
 366                         with_hist=1;
 367
 368                 g_hash_table_insert(vars, "width", g_strdup_printf("%d", w));
 369                 g_hash_table_insert(vars, "height", g_strdup_printf("%d", h));
 370                 g_hash_table_insert(vars, "res", g_strdup_printf("%d × %d", w, h));
 371                 }
 372
 373         g_hash_table_insert(vars, "collection", g_strdup(ct));
 374         g_hash_table_insert(vars, "number", g_strdup_printf("%d", n));
 375         g_hash_table_insert(vars, "total", g_strdup_printf("%d", t));
 376         g_hash_table_insert(vars, "name", g_strdup(name_escaped));
 377         g_hash_table_insert(vars, "date", g_strdup(text_from_time(imd->mtime)));
 378         g_hash_table_insert(vars, "size", g_strdup(size));
 379         g_hash_table_insert(vars, "zoom", image_zoom_get_as_text(imd));
 380
 381         if (!name_escaped)
 382                 {
 383                 text = g_strdup_printf(_("Untitled"));
 384                 }
 385         else
 386                 {
 387                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 388                 }
 389
 390         g_free(size);
 391         g_free(ct);
 392         g_free(name_escaped);
 393         g_hash_table_destroy(vars);
 394
 395         {
 396                 gint active_marks = 0;
 397                 gint mark;
 398                 gchar *text2;
 399
 400                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 401                         {
 402                         active_marks += fd->marks[mark];
 403                         }
 404
 405                 if (active_marks > 0)
 406                         {
 407                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 408
 409                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 410                                 {
 411                                 g_string_append_printf(buf, fd->marks[mark] ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 412                                 }
 413
 414                         if (*text)
 415                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 416                         else
 417                                 text2 = g_strdup(buf->str);
 418                         g_string_free(buf, TRUE);
 419                         g_free(text);
 420                         text = text2;
 421                         }
 422
 423                 if (with_hist)
 424                         {
 425                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 426                         if (*text)
 427                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 428                         else
 429                                 text2 = g_strdup(escaped_histogram_label);
 430                         g_free(escaped_histogram_label);
 431                         g_free(text);
 432                         text = text2;
 433                         }
 434         }
 435
 436         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 437         pango_layout_set_markup(layout, text, -1);
 438         g_free(text);
 439
 440         pango_layout_get_pixel_size(layout, &width, &height);
 441         /* with empty text width is set to 0, but not height) */
 442         if (width == 0)
 443                 height = 0;
 444         else if (height == 0)
 445                 width = 0;
 446         if (width > 0) width += 10;
 447         if (height > 0) height += 10;
 448
 449         if (with_hist)
 450                 {
 451                 histogram_read(osd->histogram, imgpixbuf);
 452                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 453                 height += HISTOGRAM_HEIGHT + 5;
 454                 }
 455
 456         if (width > 0 && height > 0)
 457                 {
 458                 /* TODO: make osd color configurable --Zas */
 459                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 460                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 461                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 462                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 463                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 464                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 465                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 466                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 467                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 468
 469                 if (with_hist)
 470                         {
 471                         gint x = 5;
 472                         gint y = height - HISTOGRAM_HEIGHT - 5;
 473                         gint w = width - 10;
 474                         gint xoffset = 0;
 475                         gint subdiv = 5;
 476                         gint c = 160;
 477                         gint alpha = 250;
 478                         gint i;
 479
 480                         for (i = 0; i < subdiv; i++)
 481                                 {
 482                                 gint d = (i > 0 ? 0 : 1);
 483                                 gint div_width = d + w / subdiv;
 484
 485                                 pixbuf_set_rect(pixbuf, x + xoffset, y, div_width, HISTOGRAM_HEIGHT, c, c, c, alpha, d, 1, 1, 1);
 486                                 xoffset += div_width;
 487                                 }
 488
 489                         histogram_draw(osd->histogram, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 490                         }
 491                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 492         }
 493
 494         g_object_unref(G_OBJECT(layout));
 495
 496         return pixbuf;
 497 }
 498
 499 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 500 {
 501         static GdkPixbuf **icons = NULL;
 502         GdkPixbuf *icon = NULL;
 503
 504         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 505         if (icons[flag]) return icons[flag];
 506
 507         if (osd_icons[flag].key)
 508                 {
 509                 icon = pixbuf_inline(osd_icons[flag].key);
 510                 }
 511
 512         if (!icon)
 513                 {
 514                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 515                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 516                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 517                 switch (flag)
 518                         {
 519                         case IMAGE_OSD_ROTATE_AUTO:
 520                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 521                                                 0, 0, 0, 255,
 522                                                 3, 0, 3, 0);
 523                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 524                                                      20, 9, 14, 15, 14, 3,
 525                                                      0, 0, 0, 255);
 526                                 break;
 527                         case IMAGE_OSD_ROTATE_USER:
 528                                 break;
 529                         case IMAGE_OSD_COLOR:
 530                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 531                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 532                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 533                                 break;
 534                         case IMAGE_OSD_FIRST:
 535                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 536                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 537                                                      12, 5, 18, 11, 6, 11,
 538                                                      0, 0, 0, 255);
 539                                 break;
 540                         case IMAGE_OSD_LAST:
 541                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 542                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 543                                                      12, 18, 6, 12, 18, 12,
 544                                                      0, 0, 0, 255);
 545                                 break;
 546                         case IMAGE_OSD_ICON:
 547                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 548                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 549                                 break;
 550                         default:
 551                                 break;
 552                         }
 553                 }
 554
 555         icons[flag] = icon;
 556
 557         return icon;
 558 }
 559
 560 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 561 {
 562         GdkPixbuf *pixbuf;
 563
 564         if (osd->icon_id[flag]) return;
 565
 566         pixbuf = image_osd_icon_pixbuf(flag);
 567         if (!pixbuf) return;
 568
 569         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 570                                                osd_icons[flag].x, osd_icons[flag].y,
 571                                                TRUE, FALSE);
 572 }
 573
 574 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 575 {
 576         if (osd->icon_id[flag])
 577                 {
 578                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 579                 osd->icon_id[flag] = 0;
 580                 }
 581 }
 582
 583 static gint image_osd_update_cb(gpointer data)
 584 {
 585         OverlayStateData *osd = data;
 586
 587         osd->imd->overlay_show_zoom = FALSE;
 588
 589         if (osd->show & OSD_SHOW_INFO)
 590                 {
 591                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 592                         {
 593                         GdkPixbuf *pixbuf;
 594
 595                         pixbuf = image_osd_info_render(osd);
 596                         if (pixbuf)
 597                                 {
 598                                 if (osd->ovl_info == 0)
 599                                         {
 600                                         osd->ovl_info = image_overlay_add(osd->imd, pixbuf,
 601                                                                           OSD_INFO_X, OSD_INFO_Y, TRUE, FALSE);
 602                                         }
 603                                 else
 604                                         {
 605                                         image_overlay_set(osd->imd, osd->ovl_info, pixbuf, OSD_INFO_X, OSD_INFO_Y);
 606                                         }
 607                                 g_object_unref(pixbuf);
 608                                 }
 609                         else if (osd->ovl_info)
 610                                 {
 611                                 image_overlay_remove(osd->imd, osd->ovl_info);
 612                                 osd->ovl_info = 0;
 613                                 }
 614                         }
 615                 }
 616         else
 617                 {
 618                 if (osd->ovl_info)
 619                         {
 620                         image_overlay_remove(osd->imd, osd->ovl_info);
 621                         osd->ovl_info = 0;
 622                         }
 623                 }
 624
 625         if (osd->show & OSD_SHOW_STATUS)
 626                 {
 627                 gint i;
 628
 629                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 630                         {
 631                         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 632                                 {
 633                                 if (osd_icons[i].reset) osd->icon_time[i] = 0;
 634                                 }
 635                         }
 636
 637                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 638                         {
 639                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 640                         image_osd_timer_schedule(osd);
 641                         }
 642
 643                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 644                         {
 645                         gint n = 0;
 646
 647                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 648                                 {
 649                                 n = 1;
 650                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 651                                 }
 652
 653                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 654                         image_osd_timer_schedule(osd);
 655                         }
 656
 657                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 658                         {
 659                         if (osd->icon_time[i] > 0)
 660                                 {
 661                                 image_osd_icon_show(osd, i);
 662                                 }
 663                         else
 664                                 {
 665                                 image_osd_icon_hide(osd, i);
 666                                 }
 667                         }
 668                 }
 669         else
 670                 {
 671                 gint i;
 672
 673                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 674                         {
 675                         image_osd_icon_hide(osd, i);
 676                         }
 677                 }
 678
 679         if (osd->imd->il && osd->imd->il->done)
 680                 osd->changed_states = IMAGE_STATE_NONE;
 681         osd->idle_id = -1;
 682         return FALSE;
 683 }
 684
 685 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 686 {
 687         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 688
 689         if (osd->idle_id == -1)
 690                 {
 691                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 692                 }
 693 }
 694
 695 void image_osd_update(ImageWindow *imd)
 696 {
 697         OverlayStateData *osd = image_get_osd_data(imd);
 698
 699         if (!osd) return;
 700
 701         image_osd_update_schedule(osd, TRUE);
 702 }
 703
 704 static gint image_osd_timer_cb(gpointer data)
 705 {
 706         OverlayStateData *osd = data;
 707         gint done = TRUE;
 708         gint changed = FALSE;
 709         gint i;
 710
 711         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 712                 {
 713                 if (osd->icon_time[i] > 1)
 714                         {
 715                         osd->icon_time[i]--;
 716                         if (osd->icon_time[i] < 2)
 717                                 {
 718                                 osd->icon_time[i] = 0;
 719                                 changed = TRUE;
 720                                 }
 721                         else
 722                                 {
 723                                 done = FALSE;
 724                                 }
 725                         }
 726                 }
 727
 728         if (changed) image_osd_update_schedule(osd, FALSE);
 729
 730         if (done)
 731                 {
 732                 osd->timer_id = -1;
 733                 return FALSE;
 734                 }
 735
 736         return TRUE;
 737 }
 738
 739 static void image_osd_timer_schedule(OverlayStateData *osd)
 740 {
 741         if (osd->timer_id == -1)
 742                 {
 743                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 744                 }
 745 }
 746
 747 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 748 {
 749         OverlayStateData *osd = data;
 750
 751         osd->changed_states |= state;
 752         image_osd_update_schedule(osd, FALSE);
 753 }
 754
 755 static void image_osd_free(OverlayStateData *osd)
 756 {
 757         if (!osd) return;
 758
 759         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 760         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 761
 762         if (osd->imd)
 763                 {
 764                 gint i;
 765
 766                 image_set_osd_data(osd->imd, NULL);
 767                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 768
 769                 image_set_state_func(osd->imd, NULL, NULL);
 770                 image_overlay_remove(osd->imd, osd->ovl_info);
 771
 772                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 773                         {
 774                         image_osd_icon_hide(osd, i);
 775                         }
 776                 }
 777
 778         if (osd->histogram) histogram_free(osd->histogram);
 779
 780         g_free(osd);
 781 }
 782
 783 static void image_osd_remove(ImageWindow *imd)
 784 {
 785         OverlayStateData *osd = image_get_osd_data(imd);
 786
 787         if (osd) image_osd_free(osd);
 788 }
 789
 790 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 791 {
 792         OverlayStateData *osd = data;
 793
 794         osd->imd = NULL;
 795         image_osd_free(osd);
 796 }
 797
 798 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 799 {
 800         OverlayStateData *osd = image_get_osd_data(imd);
 801
 802         if (!osd)
 803                 {
 804                 osd = g_new0(OverlayStateData, 1);
 805                 osd->imd = imd;
 806                 osd->idle_id = -1;
 807                 osd->timer_id = -1;
 808                 osd->show = OSD_SHOW_NOTHING;
 809                 osd->histogram = NULL;
 810
 811                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 812                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 813                 image_set_osd_data(imd, osd);
 814
 815                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 816                 }
 817
 818         if (show & OSD_SHOW_HISTOGRAM)
 819                 osd->histogram = histogram_new();
 820         else if (osd->histogram)
 821                 {
 822                 histogram_free(osd->histogram);
 823                 osd->histogram = NULL;
 824                 }
 825
 826         if (show & OSD_SHOW_STATUS)
 827                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 828
 829         if (show != osd->show)
 830                 image_osd_update_schedule(osd, TRUE);
 831
 832         osd->show = show;
 833 }
 834
 835 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 836 {
 837         if (!imd) return;
 838
 839         if (show == OSD_SHOW_NOTHING)
 840                 {
 841                 image_osd_remove(imd);
 842                 return;
 843                 }
 844
 845         image_osd_enable(imd, show);
 846 }
 847
 848 OsdShowFlags image_osd_get(ImageWindow *imd)
 849 {
 850         OverlayStateData *osd = image_get_osd_data(imd);
 851
 852         return osd ? osd->show : OSD_SHOW_NOTHING;
 853 }
 854
 855 /* duration:
 856     0 = hide
 857     1 = show
 858    2+ = show for duration tenths of a second
 859    -1 = use default duration
 860  */
 861 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 862 {
 863         OverlayStateData *osd = image_get_osd_data(imd);
 864
 865         if (!osd) return;
 866
 867         if (flag < IMAGE_OSD_NONE || flag >= IMAGE_OSD_COUNT) return;
 868         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 869         if (duration > 1) duration += 1;
 870
 871         osd->icon_time[flag] = duration;
 872
 873         image_osd_update_schedule(osd, FALSE);
 874         image_osd_timer_schedule(osd);
 875 }