src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include "main.h"
  14 #include "image-overlay.h"
  15
  16 #include "collect.h"
  17 #include "exif.h"
  18 #include "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_set_channel(osd->histogram, (histogram_get_channel(osd->histogram) +1)%HCHAN_COUNT);
 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_set_mode(osd->histogram, !histogram_get_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)
 155                 {
 156                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 157                 return;
 158                 }
 159
 160         if (osd->show != OSD_SHOW_NOTHING)
 161                 {
 162                 if (osd->show & OSD_SHOW_HISTOGRAM)
 163                         {
 164                         image_osd_set(imd, OSD_SHOW_NOTHING);
 165                         }
 166                 else
 167                         {
 168                         image_osd_set(imd, osd->show | OSD_SHOW_HISTOGRAM);
 169                         }
 170                 }
 171 }
 172
 173 static gchar *keywords_to_string(FileData *fd)
 174 {
 175         GList *keywords;
 176         GString *kwstr = NULL;
 177         gchar *ret = NULL;
 178
 179         g_assert(fd);
 180
 181         if (comment_read(fd, &keywords, NULL))
 182                 {
 183                 GList *work = keywords;
 184
 185                 while (work)
 186                         {
 187                         gchar *kw = work->data;
 188                         work = work->next;
 189
 190                         if (!kw) continue;
 191                         if (!kwstr)
 192                                 kwstr = g_string_new("");
 193                         else
 194                                 g_string_append(kwstr, ", ");
 195
 196                         g_string_append(kwstr, kw);
 197                         }
 198                 }
 199
 200         if (kwstr)
 201                 {
 202                 ret = kwstr->str;
 203                 g_string_free(kwstr, FALSE);
 204                 }
 205
 206         return ret;
 207 }
 208
 209 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 210 {
 211         gchar delim = '%', imp = '|', sep[] = " - ";
 212         gchar *start, *end;
 213         guint pos, prev;
 214         gboolean want_separator = FALSE;
 215         gchar *name, *data;
 216         GString *new;
 217         gchar *ret;
 218
 219         if (!str || !*str) return g_strdup("");
 220
 221         new = g_string_new(str);
 222
 223         prev = 0;
 224
 225         while (TRUE)
 226                 {
 227                 guint limit = 0;
 228                 gchar *trunc = NULL;
 229                 gchar *limpos = NULL;
 230                 gchar *extra = NULL;
 231                 gchar *extrapos = NULL;
 232                 gchar *p;
 233
 234                 start = strchr(new->str, delim);
 235                 if (!start)
 236                         break;
 237                 end = strchr(start+1, delim);
 238                 if (!end)
 239                         break;
 240
 241                 /* Search for optionnal modifiers
 242                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 243                  */
 244                 for (p = start + 1; p < end; p++)
 245                         {
 246                         if (p[0] == ':')
 247                                 {
 248                                 if (g_ascii_isdigit(p[1]) && !limpos)
 249                                         {
 250                                         limpos = p + 1;
 251                                         if (!trunc) trunc = p;
 252                                         }
 253                                 else
 254                                         {
 255                                         extrapos = p + 1;
 256                                         if (!trunc) trunc = p;
 257                                         break;
 258                                         }
 259                                 }
 260                         }
 261
 262                 if (limpos)
 263                         limit = (guint) atoi(limpos);
 264
 265                 if (extrapos)
 266                         extra = g_strndup(extrapos, end - extrapos);
 267
 268                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 269                 pos = start - new->str;
 270                 data = NULL;
 271
 272                 if (strcmp(name, "keywords") == 0)
 273                         {
 274                         data = keywords_to_string(imd->image_fd);
 275                         }
 276                 else if (strcmp(name, "comment") == 0)
 277                         {
 278                         comment_read(imd->image_fd, NULL, &data);
 279                         }
 280                 else
 281                         {
 282                         /*
 283                            keywords and comment can't be read between exif_read_fd and exif_free_fd calls
 284                            because fd->exif does not count references
 285                            on the other hand, it is OK to call it in the loop because it is cached
 286                         */
 287
 288                         ExifData *exif;
 289                         exif = exif_read_fd(imd->image_fd);
 290
 291                         data = g_strdup(g_hash_table_lookup(vars, name));
 292                         if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 293                         if (!data && exif)
 294                                 data = exif_get_data_as_text(exif, name);
 295                         exif_free_fd(imd->image_fd, exif);
 296                         }
 297
 298                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 299                         {
 300                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 301                         g_free(data);
 302                         data = new_data;
 303                         }
 304
 305                 if (data)
 306                         {
 307                         /* Since we use pango markup to display, we need to escape here */
 308                         gchar *escaped = g_markup_escape_text(data, -1);
 309                         g_free(data);
 310                         data = escaped;
 311                         }
 312
 313                 if (extra)
 314                         {
 315                         if (data && *data)
 316                                 {
 317                                 /* Display data between left and right parts of extra string
 318                                  * the data is expressed by a '*' character. A '*' may be escaped
 319                                  * by a \. You should escape all '*' characters, do not rely on the
 320                                  * current implementation which only replaces the first unescaped '*'.
 321                                  * If no "*" is present, the extra string is just appended to data string.
 322                                  * Pango mark up is accepted in left and right parts.
 323                                  * Any \n is replaced by a newline
 324                                  * Examples:
 325                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 326                                  * "\n"         -> ended with newline
 327                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 328                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 329                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 330                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 331                                  *
 332                                  * FIXME: using background / foreground colors lead to weird results.
 333                                  */
 334                                 gchar *new_data;
 335                                 gchar *left = NULL;
 336                                 gchar *right = extra;
 337                                 gchar *p;
 338                                 guint len = strlen(extra);
 339
 340                                 /* Search for left and right parts and unescape characters */
 341                                 for (p = extra; *p; p++, len--)
 342                                         if (p[0] == '\\')
 343                                                 {
 344                                                 if (p[1] == 'n')
 345                                                         {
 346                                                         memmove(p+1, p+2, --len);
 347                                                         p[0] = '\n';
 348                                                         }
 349                                                 else if (p[1] != '\0')
 350                                                         memmove(p, p+1, len--); // includes \0
 351                                                 }
 352                                         else if (p[0] == '*' && !left)
 353                                                 {
 354                                                 right = p + 1;
 355                                                 left = extra;
 356                                                 }
 357
 358                                 if (left) right[-1] = '\0';
 359
 360                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 361                                 g_free(data);
 362                                 data = new_data;
 363                                 }
 364                         g_free(extra);
 365                         }
 366
 367                 g_string_erase(new, pos, end-start+1);
 368                 if (data && *data)
 369                         {
 370                         if (want_separator)
 371                                 {
 372                                 /* insert separator */
 373                                 g_string_insert(new, pos, sep);
 374                                 pos += strlen(sep);
 375                                 want_separator = FALSE;
 376                                 }
 377
 378                         g_string_insert(new, pos, data);
 379                         pos += strlen(data);
 380                 }
 381
 382                 if (pos-prev >= 1 && new->str[pos] == imp)
 383                         {
 384                         /* pipe character is replaced by a separator, delete it
 385                          * and raise a flag if needed */
 386                         g_string_erase(new, pos--, 1);
 387                         want_separator |= (data && *data);
 388                         }
 389
 390                 if (new->str[pos] == '\n') want_separator = FALSE;
 391
 392                 prev = pos - 1;
 393
 394                 g_free(name);
 395                 g_free(data);
 396                 }
 397
 398         /* search and destroy empty lines */
 399         end = new->str;
 400         while ((start = strchr(end, '\n')))
 401                 {
 402                 end = start;
 403                 while (*++(end) == '\n')
 404                         ;
 405                 g_string_erase(new, start-new->str, end-start-1);
 406                 }
 407
 408         g_strchomp(new->str);
 409
 410         ret = new->str;
 411         g_string_free(new, FALSE);
 412
 413         return ret;
 414 }
 415
 416 typedef enum {
 417         OSDT_NONE       = 0,
 418         OSDT_FREE       = 1 << 0,
 419         OSDT_NO_DUP     = 1 << 1
 420 } OsdTemplateFlags;
 421
 422 static void osd_template_insert(GHashTable *vars, gchar *keyword, gchar *value, OsdTemplateFlags flags)
 423 {
 424         if (!value)
 425                 {
 426                 g_hash_table_insert(vars, keyword, g_strdup(""));
 427                 return;
 428                 }
 429
 430         if (flags & OSDT_NO_DUP)
 431                 {
 432                 g_hash_table_insert(vars, keyword, value);
 433                 return;
 434                 }
 435         else
 436                 {
 437                 g_hash_table_insert(vars, keyword, g_strdup(value));
 438                 }
 439
 440         if (flags & OSDT_FREE) g_free((gpointer) value);
 441 }
 442
 443 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 444 {
 445         GdkPixbuf *pixbuf = NULL;
 446         gint width, height;
 447         PangoLayout *layout;
 448         const gchar *name;
 449         gchar *text;
 450         GdkPixbuf *imgpixbuf = NULL;
 451         gboolean with_hist;
 452         ImageWindow *imd = osd->imd;
 453         FileData *fd = image_get_fd(imd);
 454
 455         if (!fd) return NULL;
 456
 457         name = image_get_name(imd);
 458         if (name)
 459                 {
 460                 gint n, t;
 461                 CollectionData *cd;
 462                 CollectInfo *info;
 463                 GHashTable *vars;
 464
 465                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 466
 467                 cd = image_get_collection(imd, &info);
 468                 if (cd)
 469                         {
 470                         t = g_list_length(cd->list);
 471                         n = g_list_index(cd->list, info) + 1;
 472                         if (cd->name)
 473                                 {
 474                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 475                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 476                                 else
 477                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 478                                 }
 479                         else
 480                                 {
 481                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 482                                 }
 483                         }
 484                 else
 485                         {
 486                         LayoutWindow *lw = layout_find_by_image(imd);
 487                         if (lw)
 488                                 {
 489                                 if (lw->slideshow)
 490                                         {
 491                                         n = g_list_length(lw->slideshow->list_done);
 492                                         t = n + g_list_length(lw->slideshow->list);
 493                                         if (n == 0) n = t;
 494                                         }
 495                                 else
 496                                         {
 497                                         t = layout_list_count(lw, NULL);
 498                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 499                                         }
 500                                 }
 501                         else if (view_window_find_image(imd, &n, &t))
 502                                 {
 503                                 n++;
 504                                 }
 505                         else
 506                                 {
 507                                 t = 1;
 508                                 n = 1;
 509                                 }
 510
 511                         if (n < 1) n = 1;
 512                         if (t < 1) t = 1;
 513
 514                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 515                         }
 516
 517                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 518                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 519                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 520                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 521                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 522                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 523
 524                 if (!imd->unknown)
 525                         {
 526                         gint w, h;
 527                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 528
 529                         if (imd->delay_flip &&
 530                             imd->il && load_pixbuf &&
 531                             image_get_pixbuf(imd) != load_pixbuf)
 532                                 {
 533                                 w = gdk_pixbuf_get_width(load_pixbuf);
 534                                 h = gdk_pixbuf_get_height(load_pixbuf);
 535                                 imgpixbuf = load_pixbuf;
 536                                 }
 537                         else
 538                                 {
 539                                 image_get_image_size(imd, &w, &h);
 540                                 imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 541                                 }
 542
 543
 544                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 545                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 546                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 547                         }
 548                 else
 549                         {
 550                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 551                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 552                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 553                         }
 554
 555                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 556                 g_hash_table_destroy(vars);
 557
 558         } else {
 559                 /* When does this occur ?? */
 560                 text = g_markup_escape_text(_("Untitled"), -1);
 561         }
 562
 563         with_hist = (imgpixbuf && (osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram && (!imd->il || image_loader_get_is_done(imd->il)));
 564
 565         {
 566                 gint active_marks = 0;
 567                 gint mark;
 568                 gchar *text2;
 569
 570                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 571                         {
 572                         active_marks += file_data_get_mark(fd, mark);
 573                         }
 574
 575                 if (active_marks > 0)
 576                         {
 577                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 578
 579                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 580                                 {
 581                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 582                                 }
 583
 584                         if (*text)
 585                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 586                         else
 587                                 text2 = g_strdup(buf->str);
 588                         g_string_free(buf, TRUE);
 589                         g_free(text);
 590                         text = text2;
 591                         }
 592
 593                 if (with_hist)
 594                         {
 595                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 596                         if (*text)
 597                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 598                         else
 599                                 text2 = g_strdup(escaped_histogram_label);
 600                         g_free(escaped_histogram_label);
 601                         g_free(text);
 602                         text = text2;
 603                         }
 604         }
 605
 606         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 607         pango_layout_set_markup(layout, text, -1);
 608         g_free(text);
 609
 610         pango_layout_get_pixel_size(layout, &width, &height);
 611         /* with empty text width is set to 0, but not height) */
 612         if (width == 0)
 613                 height = 0;
 614         else if (height == 0)
 615                 width = 0;
 616         if (width > 0) width += 10;
 617         if (height > 0) height += 10;
 618
 619         if (with_hist)
 620                 {
 621                 histogram_read(osd->histogram, imgpixbuf);
 622                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 623                 height += HISTOGRAM_HEIGHT + 5;
 624                 }
 625
 626         if (width > 0 && height > 0)
 627                 {
 628                 /* TODO: make osd color configurable --Zas */
 629                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 630                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 631                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 632                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 633                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 634                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 635                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 636                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 637                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 638
 639                 if (with_hist)
 640                         {
 641                         gint x = 5;
 642                         gint y = height - HISTOGRAM_HEIGHT - 5;
 643                         gint w = width - 10;
 644                         float xoffset = 0;
 645                         gint subdiv = 5;
 646                         gint c = 160;
 647                         gint alpha = 250;
 648                         gint i;
 649                         float add = w / (float)subdiv;
 650
 651                         for (i = 0; i < subdiv; i++)
 652                                 {
 653                                 gint d = (i > 0 ? 0 : 1);
 654
 655                                 pixbuf_set_rect(pixbuf, x + xoffset + 0.5, y, add + d + 0.5, HISTOGRAM_HEIGHT, c, c, c, alpha, d, 1, 1, 1);
 656                                 xoffset += add+d;
 657                                 }
 658
 659                         histogram_draw(osd->histogram, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 660                         }
 661                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 662         }
 663
 664         g_object_unref(G_OBJECT(layout));
 665
 666         return pixbuf;
 667 }
 668
 669 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 670 {
 671         static GdkPixbuf **icons = NULL;
 672         GdkPixbuf *icon = NULL;
 673
 674         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 675         if (icons[flag]) return icons[flag];
 676
 677         if (osd_icons[flag].key)
 678                 {
 679                 icon = pixbuf_inline(osd_icons[flag].key);
 680                 }
 681
 682         if (!icon)
 683                 {
 684                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 685                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 686                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 687                 switch (flag)
 688                         {
 689                         case IMAGE_OSD_ROTATE_AUTO:
 690                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 691                                                 0, 0, 0, 255,
 692                                                 3, 0, 3, 0);
 693                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 694                                                      20, 9, 14, 15, 14, 3,
 695                                                      0, 0, 0, 255);
 696                                 break;
 697                         case IMAGE_OSD_ROTATE_USER:
 698                                 break;
 699                         case IMAGE_OSD_COLOR:
 700                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 701                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 702                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 703                                 break;
 704                         case IMAGE_OSD_FIRST:
 705                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 706                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 707                                                      12, 5, 18, 11, 6, 11,
 708                                                      0, 0, 0, 255);
 709                                 break;
 710                         case IMAGE_OSD_LAST:
 711                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 712                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 713                                                      12, 18, 6, 12, 18, 12,
 714                                                      0, 0, 0, 255);
 715                                 break;
 716                         case IMAGE_OSD_ICON:
 717                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 718                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 719                                 break;
 720                         default:
 721                                 break;
 722                         }
 723                 }
 724
 725         icons[flag] = icon;
 726
 727         return icon;
 728 }
 729
 730 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 731                               OverlayRendererFlags flags)
 732 {
 733         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 734 }
 735
 736 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 737 {
 738         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 739 }
 740
 741 #if 0 /* unused for now */
 742 static gint image_overlay_get(ImageWindow *imd, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 743 {
 744         return pixbuf_renderer_overlay_get((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 745 }
 746 #endif
 747
 748 static void image_overlay_remove(ImageWindow *imd, gint id)
 749 {
 750         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 751 }
 752
 753 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 754 {
 755         GdkPixbuf *pixbuf;
 756
 757         if (osd->icon_id[flag]) return;
 758
 759         pixbuf = image_osd_icon_pixbuf(flag);
 760         if (!pixbuf) return;
 761
 762         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 763                                                osd_icons[flag].x, osd_icons[flag].y,
 764                                                OVL_RELATIVE);
 765 }
 766
 767 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 768 {
 769         if (osd->icon_id[flag])
 770                 {
 771                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 772                 osd->icon_id[flag] = 0;
 773                 }
 774 }
 775
 776 static void image_osd_icons_reset_time(OverlayStateData *osd)
 777 {
 778         gint i;
 779
 780         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 781                 {
 782                 if (osd_icons[i].reset)
 783                         {
 784                         osd->icon_time[i] = 0;
 785                         }
 786                 }
 787 }
 788
 789 static void image_osd_icons_update(OverlayStateData *osd)
 790 {
 791         gint i;
 792
 793         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 794                 {
 795                 if (osd->icon_time[i] > 0)
 796                         {
 797                         image_osd_icon_show(osd, i);
 798                         }
 799                 else
 800                         {
 801                         image_osd_icon_hide(osd, i);
 802                         }
 803                 }
 804 }
 805
 806 static void image_osd_icons_hide(OverlayStateData *osd)
 807 {
 808         gint i;
 809
 810         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 811                 {
 812                 image_osd_icon_hide(osd, i);
 813                 }
 814 }
 815
 816 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 817 {
 818         if (osd->ovl_info == 0)
 819                 {
 820                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, OVL_RELATIVE);
 821                 }
 822         else
 823                 {
 824                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 825                 }
 826 }
 827
 828 static void image_osd_info_hide(OverlayStateData *osd)
 829 {
 830         if (osd->ovl_info == 0) return;
 831
 832         image_overlay_remove(osd->imd, osd->ovl_info);
 833         osd->ovl_info = 0;
 834 }
 835
 836 static gint image_osd_update_cb(gpointer data)
 837 {
 838         OverlayStateData *osd = data;
 839
 840         osd->imd->overlay_show_zoom = FALSE;
 841
 842         if (osd->show & OSD_SHOW_INFO)
 843                 {
 844                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 845                         {
 846                         GdkPixbuf *pixbuf;
 847
 848                         pixbuf = image_osd_info_render(osd);
 849                         if (pixbuf)
 850                                 {
 851                                 image_osd_info_show(osd, pixbuf);
 852                                 g_object_unref(pixbuf);
 853                                 }
 854                         else
 855                                 {
 856                                 image_osd_info_hide(osd);
 857                                 }
 858                         }
 859                 }
 860         else
 861                 {
 862                 image_osd_info_hide(osd);
 863                 }
 864
 865         if (osd->show & OSD_SHOW_STATUS)
 866                 {
 867                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 868                         image_osd_icons_reset_time(osd);
 869
 870                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 871                         {
 872                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 873                         image_osd_timer_schedule(osd);
 874                         }
 875
 876                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 877                         {
 878                         gint n = 0;
 879
 880                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 881                                 {
 882                                 n = 1;
 883                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 884                                 }
 885
 886                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 887                         image_osd_timer_schedule(osd);
 888                         }
 889
 890                 image_osd_icons_update(osd);
 891                 }
 892         else
 893                 {
 894                 image_osd_icons_hide(osd);
 895                 }
 896
 897         if (osd->imd->il && image_loader_get_is_done(osd->imd->il))
 898                 osd->changed_states = IMAGE_STATE_NONE;
 899         osd->idle_id = -1;
 900         return FALSE;
 901 }
 902
 903 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 904 {
 905         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 906
 907         if (osd->idle_id == -1)
 908                 {
 909                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 910                 }
 911 }
 912
 913 void image_osd_update(ImageWindow *imd)
 914 {
 915         OverlayStateData *osd = image_get_osd_data(imd);
 916
 917         if (!osd) return;
 918
 919         image_osd_update_schedule(osd, TRUE);
 920 }
 921
 922 static gint image_osd_timer_cb(gpointer data)
 923 {
 924         OverlayStateData *osd = data;
 925         gint done = TRUE;
 926         gint changed = FALSE;
 927         gint i;
 928
 929         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 930                 {
 931                 if (osd->icon_time[i] > 1)
 932                         {
 933                         osd->icon_time[i]--;
 934                         if (osd->icon_time[i] < 2)
 935                                 {
 936                                 osd->icon_time[i] = 0;
 937                                 changed = TRUE;
 938                                 }
 939                         else
 940                                 {
 941                                 done = FALSE;
 942                                 }
 943                         }
 944                 }
 945
 946         if (changed) image_osd_update_schedule(osd, FALSE);
 947
 948         if (done)
 949                 {
 950                 osd->timer_id = -1;
 951                 return FALSE;
 952                 }
 953
 954         return TRUE;
 955 }
 956
 957 static void image_osd_timer_schedule(OverlayStateData *osd)
 958 {
 959         if (osd->timer_id == -1)
 960                 {
 961                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 962                 }
 963 }
 964
 965 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 966 {
 967         OverlayStateData *osd = data;
 968
 969         osd->changed_states |= state;
 970         image_osd_update_schedule(osd, FALSE);
 971 }
 972
 973 static void image_osd_free(OverlayStateData *osd)
 974 {
 975         if (!osd) return;
 976
 977         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 978         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 979
 980         if (osd->imd)
 981                 {
 982                 image_set_osd_data(osd->imd, NULL);
 983                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 984
 985                 image_set_state_func(osd->imd, NULL, NULL);
 986
 987                 image_osd_info_hide(osd);
 988                 image_osd_icons_hide(osd);
 989                 }
 990
 991         if (osd->histogram) histogram_free(osd->histogram);
 992
 993         g_free(osd);
 994 }
 995
 996 static void image_osd_remove(ImageWindow *imd)
 997 {
 998         OverlayStateData *osd = image_get_osd_data(imd);
 999
1000         if (osd) image_osd_free(osd);
1001 }
1002
1003 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
1004 {
1005         OverlayStateData *osd = data;
1006
1007         osd->imd = NULL;
1008         image_osd_free(osd);
1009 }
1010
1011 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
1012 {
1013         OverlayStateData *osd = image_get_osd_data(imd);
1014
1015         if (!osd)
1016                 {
1017                 osd = g_new0(OverlayStateData, 1);
1018                 osd->imd = imd;
1019                 osd->idle_id = -1;
1020                 osd->timer_id = -1;
1021                 osd->show = OSD_SHOW_NOTHING;
1022                 osd->histogram = NULL;
1023                 osd->x = options->image_overlay.common.x;
1024                 osd->y = options->image_overlay.common.y;
1025
1026                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
1027                                                    G_CALLBACK(image_osd_destroy_cb), osd);
1028                 image_set_osd_data(imd, osd);
1029
1030                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
1031                 }
1032
1033         if (show & OSD_SHOW_HISTOGRAM)
1034                 osd->histogram = histogram_new();
1035         else if (osd->histogram)
1036                 {
1037                 histogram_free(osd->histogram);
1038                 osd->histogram = NULL;
1039                 }
1040
1041         if (show & OSD_SHOW_STATUS)
1042                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
1043
1044         if (show != osd->show)
1045                 image_osd_update_schedule(osd, TRUE);
1046
1047         osd->show = show;
1048 }
1049
1050 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
1051 {
1052         if (!imd) return;
1053
1054         if (show == OSD_SHOW_NOTHING)
1055                 {
1056                 image_osd_remove(imd);
1057                 return;
1058                 }
1059
1060         image_osd_enable(imd, show);
1061 }
1062
1063 OsdShowFlags image_osd_get(ImageWindow *imd)
1064 {
1065         OverlayStateData *osd = image_get_osd_data(imd);
1066
1067         return osd ? osd->show : OSD_SHOW_NOTHING;
1068 }
1069
1070 /* duration:
1071     0 = hide
1072     1 = show
1073    2+ = show for duration tenths of a second
1074    -1 = use default duration
1075  */
1076 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1077 {
1078         OverlayStateData *osd = image_get_osd_data(imd);
1079
1080         if (!osd) return;
1081
1082         if (flag >= IMAGE_OSD_COUNT) return;
1083         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1084         if (duration > 1) duration += 1;
1085
1086         osd->icon_time[flag] = duration;
1087
1088         image_osd_update_schedule(osd, FALSE);
1089         image_osd_timer_schedule(osd);
1090 }
1091 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */