src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2009 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 "filedata.h"
  19 #include "histogram.h"
  20 #include "image.h"
  21 #include "img-view.h"
  22 #include "layout.h"
  23 #include "metadata.h"
  24 #include "pixbuf-renderer.h"
  25 #include "pixbuf_util.h"
  26 #include "ui_fileops.h"
  27 #include "image-load.h"
  28
  29 /*
  30  *----------------------------------------------------------------------------
  31  * image overlay
  32  *----------------------------------------------------------------------------
  33  */
  34
  35
  36 typedef struct _OverlayStateData OverlayStateData;
  37 struct _OverlayStateData {
  38         ImageWindow *imd;
  39         ImageState changed_states;
  40
  41         Histogram *histogram;
  42
  43         OsdShowFlags show;
  44
  45         gint ovl_info;
  46
  47         gint x;
  48         gint y;
  49
  50         gint icon_time[IMAGE_OSD_COUNT];
  51         gint icon_id[IMAGE_OSD_COUNT];
  52
  53         gint idle_id;
  54         gint timer_id;
  55         gulong destroy_id;
  56 };
  57
  58
  59 typedef struct _OSDIcon OSDIcon;
  60 struct _OSDIcon {
  61         gint reset;     /* reset on new image */
  62         gint x;         /* x, y offset */
  63         gint y;
  64         gchar *key;     /* inline pixbuf */
  65 };
  66
  67 static OSDIcon osd_icons[] = {
  68         {  TRUE,   0,   0, NULL },                      /* none */
  69         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  70         {  TRUE, -10, -10, NULL },                      /* user rotated */
  71         {  TRUE, -40, -10, NULL },                      /* color embedded */
  72         {  TRUE, -70, -10, NULL },                      /* first image */
  73         {  TRUE, -70, -10, NULL },                      /* last image */
  74         { FALSE, -70, -10, NULL },                      /* osd enabled */
  75         { FALSE, 0, 0, NULL }
  76 };
  77
  78 #define OSD_DATA "overlay-data"
  79
  80 #define IMAGE_OSD_DEFAULT_DURATION 30
  81
  82 #define HISTOGRAM_HEIGHT 140
  83 #define HISTOGRAM_WIDTH  256
  84
  85 static void image_osd_timer_schedule(OverlayStateData *osd);
  86
  87 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  88 {
  89         g_assert(template_string);
  90
  91         g_free(*template_string);
  92         *template_string = g_strdup(value);
  93 }
  94
  95
  96 void set_default_image_overlay_template_string(gchar **template_string)
  97 {
  98         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
  99 }
 100
 101 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 102 {
 103         OverlayStateData *osd;
 104
 105         if (!imd) return NULL;
 106
 107         g_assert(imd->pr);
 108
 109         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 110         return osd;
 111 }
 112
 113 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 114 {
 115         g_assert(imd);
 116         g_assert(imd->pr);
 117         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 118 }
 119
 120 /*
 121  *----------------------------------------------------------------------------
 122  * image histogram
 123  *----------------------------------------------------------------------------
 124  */
 125
 126
 127 void image_osd_histogram_chan_toggle(ImageWindow *imd)
 128 {
 129         OverlayStateData *osd = image_get_osd_data(imd);
 130
 131         if (!osd || !osd->histogram) return;
 132
 133         histogram_toggle_channel(osd->histogram);
 134         options->image_overlay.common.histogram_channel = histogram_get_channel(osd->histogram);
 135         image_osd_update(imd);
 136 }
 137
 138 void image_osd_histogram_log_toggle(ImageWindow *imd)
 139 {
 140         OverlayStateData *osd = image_get_osd_data(imd);
 141
 142         if (!osd || !osd->histogram) return;
 143
 144         histogram_toggle_mode(osd->histogram);
 145         options->image_overlay.common.histogram_mode = histogram_get_mode(osd->histogram);
 146         image_osd_update(imd);
 147 }
 148
 149 void image_osd_toggle(ImageWindow *imd)
 150 {
 151         OverlayStateData *osd;
 152
 153         if (!imd) return;
 154
 155         osd = image_get_osd_data(imd);
 156         if (!osd)
 157                 {
 158                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 159                 return;
 160                 }
 161
 162         if (osd->show != OSD_SHOW_NOTHING)
 163                 {
 164                 if (osd->show & OSD_SHOW_HISTOGRAM)
 165                         {
 166                         image_osd_set(imd, OSD_SHOW_NOTHING);
 167                         }
 168                 else
 169                         {
 170                         image_osd_set(imd, osd->show | OSD_SHOW_HISTOGRAM);
 171                         }
 172                 }
 173 }
 174
 175 static gchar *keywords_to_string(FileData *fd)
 176 {
 177         GList *keywords;
 178         GString *kwstr = NULL;
 179         gchar *ret = NULL;
 180
 181         g_assert(fd);
 182
 183         keywords = metadata_read_list(fd, KEYWORD_KEY, METADATA_PLAIN);
 184
 185         if (keywords)
 186                 {
 187                 GList *work = keywords;
 188
 189                 while (work)
 190                         {
 191                         gchar *kw = work->data;
 192                         work = work->next;
 193
 194                         if (!kw) continue;
 195                         if (!kwstr)
 196                                 kwstr = g_string_new("");
 197                         else
 198                                 g_string_append(kwstr, ", ");
 199
 200                         g_string_append(kwstr, kw);
 201                         }
 202                 string_list_free(keywords);
 203                 }
 204
 205         if (kwstr)
 206                 {
 207                 ret = kwstr->str;
 208                 g_string_free(kwstr, FALSE);
 209                 }
 210
 211         return ret;
 212 }
 213
 214 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 215 {
 216         gchar delim = '%', imp = '|', sep[] = " - ";
 217         gchar *start, *end;
 218         guint pos, prev;
 219         gboolean want_separator = FALSE;
 220         gchar *name, *data;
 221         GString *new;
 222         gchar *ret;
 223
 224         if (!str || !*str) return g_strdup("");
 225
 226         new = g_string_new(str);
 227
 228         prev = 0;
 229
 230         while (TRUE)
 231                 {
 232                 guint limit = 0;
 233                 gchar *trunc = NULL;
 234                 gchar *limpos = NULL;
 235                 gchar *extra = NULL;
 236                 gchar *extrapos = NULL;
 237                 gchar *p;
 238
 239                 start = strchr(new->str, delim);
 240                 if (!start)
 241                         break;
 242                 end = strchr(start+1, delim);
 243                 if (!end)
 244                         break;
 245
 246                 /* Search for optionnal modifiers
 247                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 248                  */
 249                 for (p = start + 1; p < end; p++)
 250                         {
 251                         if (p[0] == ':')
 252                                 {
 253                                 if (g_ascii_isdigit(p[1]) && !limpos)
 254                                         {
 255                                         limpos = p + 1;
 256                                         if (!trunc) trunc = p;
 257                                         }
 258                                 else
 259                                         {
 260                                         extrapos = p + 1;
 261                                         if (!trunc) trunc = p;
 262                                         break;
 263                                         }
 264                                 }
 265                         }
 266
 267                 if (limpos)
 268                         limit = (guint) atoi(limpos);
 269
 270                 if (extrapos)
 271                         extra = g_strndup(extrapos, end - extrapos);
 272
 273                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 274                 pos = start - new->str;
 275                 data = NULL;
 276
 277                 if (strcmp(name, "keywords") == 0)
 278                         {
 279                         data = keywords_to_string(imd->image_fd);
 280                         }
 281                 else if (strcmp(name, "comment") == 0)
 282                         {
 283                         data = metadata_read_string(imd->image_fd, COMMENT_KEY, METADATA_PLAIN);
 284                         }
 285                 else
 286                         {
 287                         data = g_strdup(g_hash_table_lookup(vars, name));
 288                         if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 289                         if (!data)
 290                                 data = metadata_read_string(imd->image_fd, name, METADATA_FORMATTED);
 291                         }
 292
 293                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 294                         {
 295                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 296                         g_free(data);
 297                         data = new_data;
 298                         }
 299
 300                 if (data)
 301                         {
 302                         /* Since we use pango markup to display, we need to escape here */
 303                         gchar *escaped = g_markup_escape_text(data, -1);
 304                         g_free(data);
 305                         data = escaped;
 306                         }
 307
 308                 if (extra)
 309                         {
 310                         if (data && *data)
 311                                 {
 312                                 /* Display data between left and right parts of extra string
 313                                  * the data is expressed by a '*' character. A '*' may be escaped
 314                                  * by a \. You should escape all '*' characters, do not rely on the
 315                                  * current implementation which only replaces the first unescaped '*'.
 316                                  * If no "*" is present, the extra string is just appended to data string.
 317                                  * Pango mark up is accepted in left and right parts.
 318                                  * Any \n is replaced by a newline
 319                                  * Examples:
 320                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 321                                  * "\n"         -> ended with newline
 322                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 323                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 324                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 325                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 326                                  *
 327                                  * FIXME: using background / foreground colors lead to weird results.
 328                                  */
 329                                 gchar *new_data;
 330                                 gchar *left = NULL;
 331                                 gchar *right = extra;
 332                                 gchar *p;
 333                                 guint len = strlen(extra);
 334
 335                                 /* Search for left and right parts and unescape characters */
 336                                 for (p = extra; *p; p++, len--)
 337                                         if (p[0] == '\\')
 338                                                 {
 339                                                 if (p[1] == 'n')
 340                                                         {
 341                                                         memmove(p+1, p+2, --len);
 342                                                         p[0] = '\n';
 343                                                         }
 344                                                 else if (p[1] != '\0')
 345                                                         memmove(p, p+1, len--); // includes \0
 346                                                 }
 347                                         else if (p[0] == '*' && !left)
 348                                                 {
 349                                                 right = p + 1;
 350                                                 left = extra;
 351                                                 }
 352
 353                                 if (left) right[-1] = '\0';
 354
 355                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 356                                 g_free(data);
 357                                 data = new_data;
 358                                 }
 359                         g_free(extra);
 360                         }
 361
 362                 g_string_erase(new, pos, end-start+1);
 363                 if (data && *data)
 364                         {
 365                         if (want_separator)
 366                                 {
 367                                 /* insert separator */
 368                                 g_string_insert(new, pos, sep);
 369                                 pos += strlen(sep);
 370                                 want_separator = FALSE;
 371                                 }
 372
 373                         g_string_insert(new, pos, data);
 374                         pos += strlen(data);
 375                 }
 376
 377                 if (pos-prev >= 1 && new->str[pos] == imp)
 378                         {
 379                         /* pipe character is replaced by a separator, delete it
 380                          * and raise a flag if needed */
 381                         g_string_erase(new, pos--, 1);
 382                         want_separator |= (data && *data);
 383                         }
 384
 385                 if (new->str[pos] == '\n') want_separator = FALSE;
 386
 387                 prev = pos - 1;
 388
 389                 g_free(name);
 390                 g_free(data);
 391                 }
 392
 393         /* search and destroy empty lines */
 394         end = new->str;
 395         while ((start = strchr(end, '\n')))
 396                 {
 397                 end = start;
 398                 while (*++(end) == '\n')
 399                         ;
 400                 g_string_erase(new, start-new->str, end-start-1);
 401                 }
 402
 403         g_strchomp(new->str);
 404
 405         ret = new->str;
 406         g_string_free(new, FALSE);
 407
 408         return ret;
 409 }
 410
 411 typedef enum {
 412         OSDT_NONE       = 0,
 413         OSDT_FREE       = 1 << 0,
 414         OSDT_NO_DUP     = 1 << 1
 415 } OsdTemplateFlags;
 416
 417 static void osd_template_insert(GHashTable *vars, gchar *keyword, gchar *value, OsdTemplateFlags flags)
 418 {
 419         if (!value)
 420                 {
 421                 g_hash_table_insert(vars, keyword, g_strdup(""));
 422                 return;
 423                 }
 424
 425         if (flags & OSDT_NO_DUP)
 426                 {
 427                 g_hash_table_insert(vars, keyword, value);
 428                 return;
 429                 }
 430         else
 431                 {
 432                 g_hash_table_insert(vars, keyword, g_strdup(value));
 433                 }
 434
 435         if (flags & OSDT_FREE) g_free((gpointer) value);
 436 }
 437
 438 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 439 {
 440         GdkPixbuf *pixbuf = NULL;
 441         gint width, height;
 442         PangoLayout *layout;
 443         const gchar *name;
 444         gchar *text;
 445         GdkPixbuf *imgpixbuf = NULL;
 446         gboolean with_hist;
 447         const HistMap *histmap;
 448         ImageWindow *imd = osd->imd;
 449         FileData *fd = image_get_fd(imd);
 450
 451         if (!fd) return NULL;
 452
 453         name = image_get_name(imd);
 454         if (name)
 455                 {
 456                 gint n, t;
 457                 CollectionData *cd;
 458                 CollectInfo *info;
 459                 GHashTable *vars;
 460
 461                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 462
 463                 cd = image_get_collection(imd, &info);
 464                 if (cd)
 465                         {
 466                         t = g_list_length(cd->list);
 467                         n = g_list_index(cd->list, info) + 1;
 468                         if (cd->name)
 469                                 {
 470                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 471                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 472                                 else
 473                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 474                                 }
 475                         else
 476                                 {
 477                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 478                                 }
 479                         }
 480                 else
 481                         {
 482                         LayoutWindow *lw = layout_find_by_image(imd);
 483                         if (lw)
 484                                 {
 485                                 if (lw->slideshow)
 486                                         {
 487                                         n = g_list_length(lw->slideshow->list_done);
 488                                         t = n + g_list_length(lw->slideshow->list);
 489                                         if (n == 0) n = t;
 490                                         }
 491                                 else
 492                                         {
 493                                         t = layout_list_count(lw, NULL);
 494                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 495                                         }
 496                                 }
 497                         else if (view_window_find_image(imd, &n, &t))
 498                                 {
 499                                 n++;
 500                                 }
 501                         else
 502                                 {
 503                                 t = 1;
 504                                 n = 1;
 505                                 }
 506
 507                         if (n < 1) n = 1;
 508                         if (t < 1) t = 1;
 509
 510                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 511                         }
 512
 513                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 514                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 515                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 516                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 517                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 518                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 519
 520                 if (!imd->unknown)
 521                         {
 522                         gint w, h;
 523                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 524
 525                         if (imd->delay_flip &&
 526                             imd->il && load_pixbuf &&
 527                             image_get_pixbuf(imd) != load_pixbuf)
 528                                 {
 529                                 w = gdk_pixbuf_get_width(load_pixbuf);
 530                                 h = gdk_pixbuf_get_height(load_pixbuf);
 531                                 imgpixbuf = load_pixbuf;
 532                                 }
 533                         else
 534                                 {
 535                                 image_get_image_size(imd, &w, &h);
 536                                 imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 537                                 }
 538
 539
 540                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 541                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 542                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 543                         }
 544                 else
 545                         {
 546                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 547                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 548                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 549                         }
 550
 551                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 552                 g_hash_table_destroy(vars);
 553
 554         } else {
 555                 /* When does this occur ?? */
 556                 text = g_markup_escape_text(_("Untitled"), -1);
 557         }
 558
 559         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 560         if (with_hist)
 561                 {
 562                 histmap = histmap_get(imd->image_fd);
 563                 if (!histmap) with_hist = FALSE;
 564                 }
 565
 566
 567         {
 568                 gint active_marks = 0;
 569                 gint mark;
 570                 gchar *text2;
 571
 572                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 573                         {
 574                         active_marks += file_data_get_mark(fd, mark);
 575                         }
 576
 577                 if (active_marks > 0)
 578                         {
 579                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 580
 581                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 582                                 {
 583                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 584                                 }
 585
 586                         if (*text)
 587                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 588                         else
 589                                 text2 = g_strdup(buf->str);
 590                         g_string_free(buf, TRUE);
 591                         g_free(text);
 592                         text = text2;
 593                         }
 594
 595                 if (with_hist)
 596                         {
 597                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 598                         if (*text)
 599                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 600                         else
 601                                 text2 = g_strdup(escaped_histogram_label);
 602                         g_free(escaped_histogram_label);
 603                         g_free(text);
 604                         text = text2;
 605                         }
 606         }
 607
 608         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 609         pango_layout_set_markup(layout, text, -1);
 610         g_free(text);
 611
 612         pango_layout_get_pixel_size(layout, &width, &height);
 613         /* with empty text width is set to 0, but not height) */
 614         if (width == 0)
 615                 height = 0;
 616         else if (height == 0)
 617                 width = 0;
 618         if (width > 0) width += 10;
 619         if (height > 0) height += 10;
 620
 621         if (with_hist)
 622                 {
 623                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 624                 height += HISTOGRAM_HEIGHT + 5;
 625                 }
 626
 627         if (width > 0 && height > 0)
 628                 {
 629                 /* TODO: make osd color configurable --Zas */
 630                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 631                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 632                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 633                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 634                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 635                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 636                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 637                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 638                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 639
 640                 if (with_hist)
 641                         {
 642                         gint x = 5;
 643                         gint y = height - HISTOGRAM_HEIGHT - 5;
 644                         gint w = width - 10;
 645
 646                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 647                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 648                         }
 649                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 650         }
 651
 652         g_object_unref(G_OBJECT(layout));
 653
 654         return pixbuf;
 655 }
 656
 657 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 658 {
 659         static GdkPixbuf **icons = NULL;
 660         GdkPixbuf *icon = NULL;
 661
 662         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 663         if (icons[flag]) return icons[flag];
 664
 665         if (osd_icons[flag].key)
 666                 {
 667                 icon = pixbuf_inline(osd_icons[flag].key);
 668                 }
 669
 670         if (!icon)
 671                 {
 672                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 673                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 674                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 675                 switch (flag)
 676                         {
 677                         case IMAGE_OSD_ROTATE_AUTO:
 678                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 679                                                 0, 0, 0, 255,
 680                                                 3, 0, 3, 0);
 681                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 682                                                      20, 9, 14, 15, 14, 3,
 683                                                      0, 0, 0, 255);
 684                                 break;
 685                         case IMAGE_OSD_ROTATE_USER:
 686                                 break;
 687                         case IMAGE_OSD_COLOR:
 688                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 689                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 690                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 691                                 break;
 692                         case IMAGE_OSD_FIRST:
 693                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 694                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 695                                                      12, 5, 18, 11, 6, 11,
 696                                                      0, 0, 0, 255);
 697                                 break;
 698                         case IMAGE_OSD_LAST:
 699                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 700                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 701                                                      12, 18, 6, 12, 18, 12,
 702                                                      0, 0, 0, 255);
 703                                 break;
 704                         case IMAGE_OSD_ICON:
 705                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 706                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 707                                 break;
 708                         default:
 709                                 break;
 710                         }
 711                 }
 712
 713         icons[flag] = icon;
 714
 715         return icon;
 716 }
 717
 718 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 719                               OverlayRendererFlags flags)
 720 {
 721         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 722 }
 723
 724 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 725 {
 726         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 727 }
 728
 729 #if 0 /* unused for now */
 730 static gint image_overlay_get(ImageWindow *imd, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 731 {
 732         return pixbuf_renderer_overlay_get((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 733 }
 734 #endif
 735
 736 static void image_overlay_remove(ImageWindow *imd, gint id)
 737 {
 738         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 739 }
 740
 741 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 742 {
 743         GdkPixbuf *pixbuf;
 744
 745         if (osd->icon_id[flag]) return;
 746
 747         pixbuf = image_osd_icon_pixbuf(flag);
 748         if (!pixbuf) return;
 749
 750         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 751                                                osd_icons[flag].x, osd_icons[flag].y,
 752                                                OVL_RELATIVE);
 753 }
 754
 755 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 756 {
 757         if (osd->icon_id[flag])
 758                 {
 759                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 760                 osd->icon_id[flag] = 0;
 761                 }
 762 }
 763
 764 static void image_osd_icons_reset_time(OverlayStateData *osd)
 765 {
 766         gint i;
 767
 768         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 769                 {
 770                 if (osd_icons[i].reset)
 771                         {
 772                         osd->icon_time[i] = 0;
 773                         }
 774                 }
 775 }
 776
 777 static void image_osd_icons_update(OverlayStateData *osd)
 778 {
 779         gint i;
 780
 781         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 782                 {
 783                 if (osd->icon_time[i] > 0)
 784                         {
 785                         image_osd_icon_show(osd, i);
 786                         }
 787                 else
 788                         {
 789                         image_osd_icon_hide(osd, i);
 790                         }
 791                 }
 792 }
 793
 794 static void image_osd_icons_hide(OverlayStateData *osd)
 795 {
 796         gint i;
 797
 798         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 799                 {
 800                 image_osd_icon_hide(osd, i);
 801                 }
 802 }
 803
 804 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 805 {
 806         if (osd->ovl_info == 0)
 807                 {
 808                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, OVL_RELATIVE);
 809                 }
 810         else
 811                 {
 812                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 813                 }
 814 }
 815
 816 static void image_osd_info_hide(OverlayStateData *osd)
 817 {
 818         if (osd->ovl_info == 0) return;
 819
 820         image_overlay_remove(osd->imd, osd->ovl_info);
 821         osd->ovl_info = 0;
 822 }
 823
 824 static gint image_osd_update_cb(gpointer data)
 825 {
 826         OverlayStateData *osd = data;
 827
 828         osd->imd->overlay_show_zoom = FALSE;
 829
 830         if (osd->show & OSD_SHOW_INFO)
 831                 {
 832                 /* redraw when the image was changed,
 833                    with histogram we have to redraw also when loading is finished */
 834                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 835                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM))
 836                         {
 837                         GdkPixbuf *pixbuf;
 838
 839                         pixbuf = image_osd_info_render(osd);
 840                         if (pixbuf)
 841                                 {
 842                                 image_osd_info_show(osd, pixbuf);
 843                                 g_object_unref(pixbuf);
 844                                 }
 845                         else
 846                                 {
 847                                 image_osd_info_hide(osd);
 848                                 }
 849                         }
 850                 }
 851         else
 852                 {
 853                 image_osd_info_hide(osd);
 854                 }
 855
 856         if (osd->show & OSD_SHOW_STATUS)
 857                 {
 858                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 859                         image_osd_icons_reset_time(osd);
 860
 861                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 862                         {
 863                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 864                         image_osd_timer_schedule(osd);
 865                         }
 866
 867                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 868                         {
 869                         gint n = 0;
 870
 871                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 872                                 {
 873                                 n = 1;
 874                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 875                                 }
 876
 877                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 878                         image_osd_timer_schedule(osd);
 879                         }
 880
 881                 image_osd_icons_update(osd);
 882                 }
 883         else
 884                 {
 885                 image_osd_icons_hide(osd);
 886                 }
 887
 888         if (osd->imd->il && image_loader_get_is_done(osd->imd->il))
 889                 osd->changed_states = IMAGE_STATE_NONE;
 890         osd->idle_id = -1;
 891         return FALSE;
 892 }
 893
 894 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 895 {
 896         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 897
 898         if (osd->idle_id == -1)
 899                 {
 900                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 901                 }
 902 }
 903
 904 void image_osd_update(ImageWindow *imd)
 905 {
 906         OverlayStateData *osd = image_get_osd_data(imd);
 907
 908         if (!osd) return;
 909
 910         image_osd_update_schedule(osd, TRUE);
 911 }
 912
 913 static gint image_osd_timer_cb(gpointer data)
 914 {
 915         OverlayStateData *osd = data;
 916         gint done = TRUE;
 917         gint changed = FALSE;
 918         gint i;
 919
 920         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 921                 {
 922                 if (osd->icon_time[i] > 1)
 923                         {
 924                         osd->icon_time[i]--;
 925                         if (osd->icon_time[i] < 2)
 926                                 {
 927                                 osd->icon_time[i] = 0;
 928                                 changed = TRUE;
 929                                 }
 930                         else
 931                                 {
 932                                 done = FALSE;
 933                                 }
 934                         }
 935                 }
 936
 937         if (changed) image_osd_update_schedule(osd, FALSE);
 938
 939         if (done)
 940                 {
 941                 osd->timer_id = -1;
 942                 return FALSE;
 943                 }
 944
 945         return TRUE;
 946 }
 947
 948 static void image_osd_timer_schedule(OverlayStateData *osd)
 949 {
 950         if (osd->timer_id == -1)
 951                 {
 952                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 953                 }
 954 }
 955
 956 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 957 {
 958         OverlayStateData *osd = data;
 959
 960         osd->changed_states |= state;
 961         image_osd_update_schedule(osd, FALSE);
 962 }
 963
 964 static void image_osd_free(OverlayStateData *osd)
 965 {
 966         if (!osd) return;
 967
 968         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 969         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 970
 971         if (osd->imd)
 972                 {
 973                 image_set_osd_data(osd->imd, NULL);
 974                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 975
 976                 image_set_state_func(osd->imd, NULL, NULL);
 977
 978                 image_osd_info_hide(osd);
 979                 image_osd_icons_hide(osd);
 980                 }
 981
 982         if (osd->histogram) histogram_free(osd->histogram);
 983
 984         g_free(osd);
 985 }
 986
 987 static void image_osd_remove(ImageWindow *imd)
 988 {
 989         OverlayStateData *osd = image_get_osd_data(imd);
 990
 991         if (osd) image_osd_free(osd);
 992 }
 993
 994 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 995 {
 996         OverlayStateData *osd = data;
 997
 998         osd->imd = NULL;
 999         image_osd_free(osd);
1000 }
1001
1002 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
1003 {
1004         OverlayStateData *osd = image_get_osd_data(imd);
1005
1006         if (!osd)
1007                 {
1008                 osd = g_new0(OverlayStateData, 1);
1009                 osd->imd = imd;
1010                 osd->idle_id = -1;
1011                 osd->timer_id = -1;
1012                 osd->show = OSD_SHOW_NOTHING;
1013                 osd->histogram = NULL;
1014                 osd->x = options->image_overlay.common.x;
1015                 osd->y = options->image_overlay.common.y;
1016
1017                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
1018                                                    G_CALLBACK(image_osd_destroy_cb), osd);
1019                 image_set_osd_data(imd, osd);
1020
1021                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
1022                 }
1023
1024         if (show & OSD_SHOW_HISTOGRAM)
1025                 {
1026                 osd->histogram = histogram_new();
1027                 histogram_set_channel(osd->histogram, options->image_overlay.common.histogram_channel);
1028                 histogram_set_mode(osd->histogram, options->image_overlay.common.histogram_mode);
1029                 }
1030         else if (osd->histogram)
1031                 {
1032                 histogram_free(osd->histogram);
1033                 osd->histogram = NULL;
1034                 }
1035
1036         if (show & OSD_SHOW_STATUS)
1037                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
1038
1039         if (show != osd->show)
1040                 image_osd_update_schedule(osd, TRUE);
1041
1042         osd->show = show;
1043 }
1044
1045 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
1046 {
1047         if (!imd) return;
1048
1049         if (show == OSD_SHOW_NOTHING)
1050                 {
1051                 image_osd_remove(imd);
1052                 return;
1053                 }
1054
1055         image_osd_enable(imd, show);
1056 }
1057
1058 OsdShowFlags image_osd_get(ImageWindow *imd)
1059 {
1060         OverlayStateData *osd = image_get_osd_data(imd);
1061
1062         return osd ? osd->show : OSD_SHOW_NOTHING;
1063 }
1064
1065 /* duration:
1066     0 = hide
1067     1 = show
1068    2+ = show for duration tenths of a second
1069    -1 = use default duration
1070  */
1071 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1072 {
1073         OverlayStateData *osd = image_get_osd_data(imd);
1074
1075         if (!osd) return;
1076
1077         if (flag >= IMAGE_OSD_COUNT) return;
1078         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1079         if (duration > 1) duration += 1;
1080
1081         osd->icon_time[flag] = duration;
1082
1083         image_osd_update_schedule(osd, FALSE);
1084         image_osd_timer_schedule(osd);
1085 }
1086 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */