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