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