src/image-overlay.c

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