src/image-overlay.c

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "main.h"
  23 #include "image-overlay.h"
  24
  25 #include "collect.h"
  26 #include "exif.h"
  27 #include "filedata.h"
  28 #include "histogram.h"
  29 #include "image.h"
  30 #include "img-view.h"
  31 #include "layout.h"
  32 #include "metadata.h"
  33 #include "pixbuf-renderer.h"
  34 #include "pixbuf_util.h"
  35 #include "ui_fileops.h"
  36 #include "image-load.h"
  37 #include "glua.h"
  38
  39 /*
  40  *----------------------------------------------------------------------------
  41  * image overlay
  42  *----------------------------------------------------------------------------
  43  */
  44
  45
  46 typedef struct _OverlayStateData OverlayStateData;
  47 struct _OverlayStateData {
  48         ImageWindow *imd;
  49         ImageState changed_states;
  50         NotifyType notify;
  51
  52         Histogram *histogram;
  53
  54         OsdShowFlags show;
  55
  56         gint ovl_info;
  57
  58         gint x;
  59         gint y;
  60
  61         gint icon_time[IMAGE_OSD_COUNT];
  62         gint icon_id[IMAGE_OSD_COUNT];
  63
  64         guint idle_id; /* event source id */
  65         guint timer_id; /* event source id */
  66         gulong destroy_id;
  67 };
  68
  69
  70 typedef struct _OSDIcon OSDIcon;
  71 struct _OSDIcon {
  72         gboolean reset; /* reset on new image */
  73         gint x;         /* x, y offset */
  74         gint y;
  75         gchar *key;     /* inline pixbuf */
  76 };
  77
  78 static OSDIcon osd_icons[] = {
  79         {  TRUE,   0,   0, NULL },                      /* none */
  80         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  81         {  TRUE, -10, -10, NULL },                      /* user rotated */
  82         {  TRUE, -40, -10, NULL },                      /* color embedded */
  83         {  TRUE, -70, -10, NULL },                      /* first image */
  84         {  TRUE, -70, -10, NULL },                      /* last image */
  85         { FALSE, -70, -10, NULL },                      /* osd enabled */
  86         { FALSE, 0, 0, NULL }
  87 };
  88
  89 #define OSD_DATA "overlay-data"
  90
  91 #define IMAGE_OSD_DEFAULT_DURATION 30
  92
  93 #define HISTOGRAM_HEIGHT 140
  94 #define HISTOGRAM_WIDTH  256
  95
  96 static void image_osd_timer_schedule(OverlayStateData *osd);
  97
  98 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  99 {
 100         g_assert(template_string);
 101
 102         g_free(*template_string);
 103         *template_string = g_strdup(value);
 104 }
 105
 106
 107 void set_default_image_overlay_template_string(gchar **template_string)
 108 {
 109         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 110 }
 111
 112 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 113 {
 114         g_assert(font_string);
 115
 116         g_free(*font_string);
 117         *font_string = g_strdup(value);
 118 }
 119
 120 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 121 {
 122         OverlayStateData *osd;
 123
 124         if (!imd) return NULL;
 125
 126         g_assert(imd->pr);
 127
 128         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 129         return osd;
 130 }
 131
 132 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 133 {
 134         g_assert(imd);
 135         g_assert(imd->pr);
 136         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 137 }
 138
 139 /*
 140  *----------------------------------------------------------------------------
 141  * image histogram
 142  *----------------------------------------------------------------------------
 143  */
 144
 145
 146 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 147 {
 148         OverlayStateData *osd = image_get_osd_data(imd);
 149
 150         if (!osd || !osd->histogram) return;
 151
 152         histogram_toggle_channel(osd->histogram);
 153         image_osd_update(imd);
 154 }
 155
 156 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 157 {
 158         OverlayStateData *osd = image_get_osd_data(imd);
 159
 160         if (!osd || !osd->histogram) return;
 161
 162         histogram_toggle_mode(osd->histogram);
 163         image_osd_update(imd);
 164 }
 165
 166 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 167 {
 168         OverlayStateData *osd = image_get_osd_data(imd);
 169
 170         if (!osd || !osd->histogram) return;
 171
 172         histogram_set_channel(osd->histogram, chan);
 173         image_osd_update(imd);
 174 }
 175
 176 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 177 {
 178         OverlayStateData *osd = image_get_osd_data(imd);
 179
 180         if (!osd || !osd->histogram) return;
 181
 182         histogram_set_mode(osd->histogram, mode);
 183         image_osd_update(imd);
 184 }
 185
 186 gint image_osd_histogram_get_channel(ImageWindow *imd)
 187 {
 188         OverlayStateData *osd = image_get_osd_data(imd);
 189
 190         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 191
 192         return histogram_get_channel(osd->histogram);
 193 }
 194
 195 gint image_osd_histogram_get_mode(ImageWindow *imd)
 196 {
 197         OverlayStateData *osd = image_get_osd_data(imd);
 198
 199         if (!osd || !osd->histogram) return 0;
 200
 201         return histogram_get_mode(osd->histogram);
 202 }
 203
 204 void image_osd_toggle(ImageWindow *imd)
 205 {
 206         OsdShowFlags show;
 207
 208         if (!imd) return;
 209
 210         show = image_osd_get(imd);
 211         if (show == OSD_SHOW_NOTHING)
 212                 {
 213                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 214                 return;
 215                 }
 216         else
 217                 {
 218                 if (show & OSD_SHOW_HISTOGRAM)
 219                         {
 220                         image_osd_set(imd, OSD_SHOW_NOTHING);
 221                         }
 222                 else
 223                         {
 224                         image_osd_set(imd, show | OSD_SHOW_HISTOGRAM);
 225                         }
 226                 }
 227 }
 228
 229 static gchar *keywords_to_string(FileData *fd)
 230 {
 231         GList *keywords;
 232         GString *kwstr = NULL;
 233         gchar *ret = NULL;
 234
 235         g_assert(fd);
 236
 237         keywords = metadata_read_list(fd, KEYWORD_KEY, METADATA_PLAIN);
 238
 239         if (keywords)
 240                 {
 241                 GList *work = keywords;
 242
 243                 while (work)
 244                         {
 245                         gchar *kw = work->data;
 246                         work = work->next;
 247
 248                         if (!kw) continue;
 249                         if (!kwstr)
 250                                 kwstr = g_string_new("");
 251                         else
 252                                 g_string_append(kwstr, ", ");
 253
 254                         g_string_append(kwstr, kw);
 255                         }
 256                 string_list_free(keywords);
 257                 }
 258
 259         if (kwstr)
 260                 {
 261                 ret = kwstr->str;
 262                 g_string_free(kwstr, FALSE);
 263                 }
 264
 265         return ret;
 266 }
 267
 268 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 269 {
 270         gchar delim = '%', imp = '|', sep[] = " - ";
 271         gchar *start, *end;
 272         guint pos, prev;
 273         gboolean want_separator = FALSE;
 274         gchar *name, *data;
 275         GString *new;
 276         gchar *ret;
 277
 278         if (!str || !*str) return g_strdup("");
 279
 280         new = g_string_new(str);
 281
 282         prev = -1;
 283
 284         while (TRUE)
 285                 {
 286                 guint limit = 0;
 287                 gchar *trunc = NULL;
 288                 gchar *limpos = NULL;
 289                 gchar *extra = NULL;
 290                 gchar *extrapos = NULL;
 291                 gchar *p;
 292
 293                 start = strchr(new->str + (prev + 1), delim);
 294                 if (!start)
 295                         break;
 296                 end = strchr(start+1, delim);
 297                 if (!end)
 298                         break;
 299
 300                 /* Search for optionnal modifiers
 301                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 302                  */
 303                 for (p = start + 1; p < end; p++)
 304                         {
 305                         if (p[0] == ':')
 306                                 {
 307                                 if (g_ascii_isdigit(p[1]) && !limpos)
 308                                         {
 309                                         limpos = p + 1;
 310                                         if (!trunc) trunc = p;
 311                                         }
 312                                 else
 313                                         {
 314                                         extrapos = p + 1;
 315                                         if (!trunc) trunc = p;
 316                                         break;
 317                                         }
 318                                 }
 319                         }
 320
 321                 if (limpos)
 322                         limit = (guint) atoi(limpos);
 323
 324                 if (extrapos)
 325                         extra = g_strndup(extrapos, end - extrapos);
 326
 327                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 328                 pos = start - new->str;
 329                 data = NULL;
 330
 331                 if (strcmp(name, "keywords") == 0)
 332                         {
 333                         data = keywords_to_string(imd->image_fd);
 334                         }
 335                 else if (strcmp(name, "comment") == 0)
 336                         {
 337                         data = metadata_read_string(imd->image_fd, COMMENT_KEY, METADATA_PLAIN);
 338                         }
 339                 else if (strcmp(name, "imagecomment") == 0)
 340                         {
 341                         data = exif_get_image_comment(imd->image_fd);
 342                         }
 343                 else if (strcmp(name, "rating") == 0)
 344                         {
 345                         data = metadata_read_string(imd->image_fd, RATING_KEY, METADATA_PLAIN);
 346                         }
 347 #ifdef HAVE_LUA
 348                 else if (strncmp(name, "lua/", 4) == 0)
 349                         {
 350                         gchar *tmp;
 351                         tmp = strchr(name+4, '/');
 352                         if (!tmp)
 353                                 break;
 354                         *tmp = '\0';
 355                         data = lua_callvalue(imd->image_fd, name+4, tmp+1);
 356                         }
 357 #endif
 358                 else
 359                         {
 360                         data = g_strdup(g_hash_table_lookup(vars, name));
 361                         if (!data)
 362                                 data = metadata_read_string(imd->image_fd, name, METADATA_FORMATTED);
 363                         }
 364
 365                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 366                         {
 367                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 368                         g_free(data);
 369                         data = new_data;
 370                         }
 371
 372                 if (data)
 373                         {
 374                         /* Since we use pango markup to display, we need to escape here */
 375                         gchar *escaped = g_markup_escape_text(data, -1);
 376                         g_free(data);
 377                         data = escaped;
 378                         }
 379
 380                 if (extra)
 381                         {
 382                         if (data && *data)
 383                                 {
 384                                 /* Display data between left and right parts of extra string
 385                                  * the data is expressed by a '*' character. A '*' may be escaped
 386                                  * by a \. You should escape all '*' characters, do not rely on the
 387                                  * current implementation which only replaces the first unescaped '*'.
 388                                  * If no "*" is present, the extra string is just appended to data string.
 389                                  * Pango mark up is accepted in left and right parts.
 390                                  * Any \n is replaced by a newline
 391                                  * Examples:
 392                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 393                                  * "\n"         -> ended with newline
 394                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 395                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 396                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 397                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 398                                  *
 399                                  * FIXME: using background / foreground colors lead to weird results.
 400                                  */
 401                                 gchar *new_data;
 402                                 gchar *left = NULL;
 403                                 gchar *right = extra;
 404                                 gchar *p;
 405                                 guint len = strlen(extra);
 406
 407                                 /* Search for left and right parts and unescape characters */
 408                                 for (p = extra; *p; p++, len--)
 409                                         if (p[0] == '\\')
 410                                                 {
 411                                                 if (p[1] == 'n')
 412                                                         {
 413                                                         memmove(p+1, p+2, --len);
 414                                                         p[0] = '\n';
 415                                                         }
 416                                                 else if (p[1] != '\0')
 417                                                         memmove(p, p+1, len--); // includes \0
 418                                                 }
 419                                         else if (p[0] == '*' && !left)
 420                                                 {
 421                                                 right = p + 1;
 422                                                 left = extra;
 423                                                 }
 424
 425                                 if (left) right[-1] = '\0';
 426
 427                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 428                                 g_free(data);
 429                                 data = new_data;
 430                                 }
 431                         g_free(extra);
 432                         }
 433
 434                 g_string_erase(new, pos, end-start+1);
 435                 if (data && *data)
 436                         {
 437                         if (want_separator)
 438                                 {
 439                                 /* insert separator */
 440                                 g_string_insert(new, pos, sep);
 441                                 pos += strlen(sep);
 442                                 want_separator = FALSE;
 443                                 }
 444
 445                         g_string_insert(new, pos, data);
 446                         pos += strlen(data);
 447                 }
 448
 449                 if (pos-prev >= 1 && new->str[pos] == imp)
 450                         {
 451                         /* pipe character is replaced by a separator, delete it
 452                          * and raise a flag if needed */
 453                         g_string_erase(new, pos--, 1);
 454                         want_separator |= (data && *data);
 455                         }
 456
 457                 if (new->str[pos] == '\n') want_separator = FALSE;
 458
 459                 prev = pos - 1;
 460
 461                 g_free(name);
 462                 g_free(data);
 463                 }
 464
 465         /* search and destroy empty lines */
 466         end = new->str;
 467         while ((start = strchr(end, '\n')))
 468                 {
 469                 end = start;
 470                 while (*++(end) == '\n')
 471                         ;
 472                 g_string_erase(new, start-new->str, end-start-1);
 473                 }
 474
 475         g_strchomp(new->str);
 476
 477         ret = new->str;
 478         g_string_free(new, FALSE);
 479
 480         return ret;
 481 }
 482
 483 typedef enum {
 484         OSDT_NONE       = 0,
 485         OSDT_FREE       = 1 << 0,
 486         OSDT_NO_DUP     = 1 << 1
 487 } OsdTemplateFlags;
 488
 489 static void osd_template_insert(GHashTable *vars, gchar *keyword, gchar *value, OsdTemplateFlags flags)
 490 {
 491         if (!value)
 492                 {
 493                 g_hash_table_insert(vars, keyword, g_strdup(""));
 494                 return;
 495                 }
 496
 497         if (flags & OSDT_NO_DUP)
 498                 {
 499                 g_hash_table_insert(vars, keyword, value);
 500                 return;
 501                 }
 502         else
 503                 {
 504                 g_hash_table_insert(vars, keyword, g_strdup(value));
 505                 }
 506
 507         if (flags & OSDT_FREE) g_free((gpointer) value);
 508 }
 509
 510 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 511 {
 512         GdkPixbuf *pixbuf = NULL;
 513         gint width, height;
 514         PangoLayout *layout;
 515         const gchar *name;
 516         gchar *text;
 517         gboolean with_hist;
 518         const HistMap *histmap = NULL;
 519         ImageWindow *imd = osd->imd;
 520         FileData *fd = image_get_fd(imd);
 521         PangoFontDescription *font_desc;
 522
 523         if (!fd) return NULL;
 524
 525         name = image_get_name(imd);
 526         if (name)
 527                 {
 528                 gint n, t;
 529                 CollectionData *cd;
 530                 CollectInfo *info;
 531                 GHashTable *vars;
 532
 533                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 534
 535                 cd = image_get_collection(imd, &info);
 536                 if (cd)
 537                         {
 538                         t = g_list_length(cd->list);
 539                         n = g_list_index(cd->list, info) + 1;
 540                         if (cd->name)
 541                                 {
 542                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 543                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 544                                 else
 545                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 546                                 }
 547                         else
 548                                 {
 549                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 550                                 }
 551                         }
 552                 else
 553                         {
 554                         LayoutWindow *lw = layout_find_by_image(imd);
 555                         if (lw)
 556                                 {
 557                                 if (lw->slideshow)
 558                                         {
 559                                         n = g_list_length(lw->slideshow->list_done);
 560                                         t = n + g_list_length(lw->slideshow->list);
 561                                         if (n == 0) n = t;
 562                                         }
 563                                 else
 564                                         {
 565                                         t = layout_list_count(lw, NULL);
 566                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 567                                         }
 568                                 }
 569                         else if (view_window_find_image(imd, &n, &t))
 570                                 {
 571                                 n++;
 572                                 }
 573                         else
 574                                 {
 575                                 t = 1;
 576                                 n = 1;
 577                                 }
 578
 579                         if (n < 1) n = 1;
 580                         if (t < 1) t = 1;
 581
 582                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 583                         }
 584
 585                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 586                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 587                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 588                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 589                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 590                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 591
 592                 if (!imd->unknown)
 593                         {
 594                         gint w, h;
 595                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 596
 597                         if (imd->delay_flip &&
 598                             imd->il && load_pixbuf &&
 599                             image_get_pixbuf(imd) != load_pixbuf)
 600                                 {
 601                                 w = gdk_pixbuf_get_width(load_pixbuf);
 602                                 h = gdk_pixbuf_get_height(load_pixbuf);
 603                                 }
 604                         else
 605                                 {
 606                                 image_get_image_size(imd, &w, &h);
 607                                 }
 608
 609
 610                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 611                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 612                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 613                         }
 614                 else
 615                         {
 616                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 617                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 618                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 619                         }
 620
 621                 text = image_osd_mkinfo(options->image_overlay.template_string, imd, vars);
 622                 g_hash_table_destroy(vars);
 623
 624         } else {
 625                 /* When does this occur ?? */
 626                 text = g_markup_escape_text(_("Untitled"), -1);
 627         }
 628
 629         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 630         if (with_hist)
 631                 {
 632                 histmap = histmap_get(imd->image_fd);
 633                 if (!histmap)
 634                         {
 635                         histmap_start_idle(imd->image_fd);
 636                         with_hist = FALSE;
 637                         }
 638                 }
 639
 640
 641         {
 642                 gint active_marks = 0;
 643                 gint mark;
 644                 gchar *text2;
 645
 646                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 647                         {
 648                         active_marks += file_data_get_mark(fd, mark);
 649                         }
 650
 651                 if (active_marks > 0)
 652                         {
 653                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 654
 655                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 656                                 {
 657                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 658                                 }
 659
 660                         if (*text)
 661                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 662                         else
 663                                 text2 = g_strdup(buf->str);
 664                         g_string_free(buf, TRUE);
 665                         g_free(text);
 666                         text = text2;
 667                         }
 668
 669                 if (with_hist)
 670                         {
 671                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 672                         if (*text)
 673                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 674                         else
 675                                 text2 = g_strdup(escaped_histogram_label);
 676                         g_free(escaped_histogram_label);
 677                         g_free(text);
 678                         text = text2;
 679                         }
 680         }
 681
 682         font_desc = pango_font_description_from_string(options->image_overlay.font);
 683         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 684         pango_layout_set_font_description(layout, font_desc);
 685
 686         pango_layout_set_markup(layout, text, -1);
 687         g_free(text);
 688
 689         pango_layout_get_pixel_size(layout, &width, &height);
 690         /* with empty text width is set to 0, but not height) */
 691         if (width == 0)
 692                 height = 0;
 693         else if (height == 0)
 694                 width = 0;
 695         if (width > 0) width += 10;
 696         if (height > 0) height += 10;
 697
 698         if (with_hist)
 699                 {
 700                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 701                 height += HISTOGRAM_HEIGHT + 5;
 702                 }
 703
 704         if (width > 0 && height > 0)
 705                 {
 706                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 707                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 708                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 709                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 710                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 711                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 712                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 713                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 714                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 715                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 716
 717                 if (with_hist)
 718                         {
 719                         gint x = 5;
 720                         gint y = height - HISTOGRAM_HEIGHT - 5;
 721                         gint w = width - 10;
 722
 723                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 724                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 725                         }
 726                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 727                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 728         }
 729
 730         g_object_unref(G_OBJECT(layout));
 731
 732         return pixbuf;
 733 }
 734
 735 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 736 {
 737         static GdkPixbuf **icons = NULL;
 738         GdkPixbuf *icon = NULL;
 739
 740         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 741         if (icons[flag]) return icons[flag];
 742
 743         if (osd_icons[flag].key)
 744                 {
 745                 icon = pixbuf_inline(osd_icons[flag].key);
 746                 }
 747
 748         if (!icon)
 749                 {
 750                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 751                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 752                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 753                 switch (flag)
 754                         {
 755                         case IMAGE_OSD_ROTATE_AUTO:
 756                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 757                                                 0, 0, 0, 255,
 758                                                 3, 0, 3, 0);
 759                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 760                                                      20, 9, 14, 15, 14, 3,
 761                                                      0, 0, 0, 255);
 762                                 break;
 763                         case IMAGE_OSD_ROTATE_USER:
 764                                 break;
 765                         case IMAGE_OSD_COLOR:
 766                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 767                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 768                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 769                                 break;
 770                         case IMAGE_OSD_FIRST:
 771                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 772                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 773                                                      12, 5, 18, 11, 6, 11,
 774                                                      0, 0, 0, 255);
 775                                 break;
 776                         case IMAGE_OSD_LAST:
 777                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 778                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 779                                                      12, 18, 6, 12, 18, 12,
 780                                                      0, 0, 0, 255);
 781                                 break;
 782                         case IMAGE_OSD_ICON:
 783                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 784                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 785                                 break;
 786                         default:
 787                                 break;
 788                         }
 789                 }
 790
 791         icons[flag] = icon;
 792
 793         return icon;
 794 }
 795
 796 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 797                               OverlayRendererFlags flags)
 798 {
 799         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 800 }
 801
 802 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 803 {
 804         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 805 }
 806
 807 static void image_overlay_remove(ImageWindow *imd, gint id)
 808 {
 809         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 810 }
 811
 812 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 813 {
 814         GdkPixbuf *pixbuf;
 815
 816         if (osd->icon_id[flag]) return;
 817
 818         pixbuf = image_osd_icon_pixbuf(flag);
 819         if (!pixbuf) return;
 820
 821         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 822                                                osd_icons[flag].x, osd_icons[flag].y,
 823                                                OVL_RELATIVE);
 824 }
 825
 826 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 827 {
 828         if (osd->icon_id[flag])
 829                 {
 830                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 831                 osd->icon_id[flag] = 0;
 832                 }
 833 }
 834
 835 static void image_osd_icons_reset_time(OverlayStateData *osd)
 836 {
 837         gint i;
 838
 839         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 840                 {
 841                 if (osd_icons[i].reset)
 842                         {
 843                         osd->icon_time[i] = 0;
 844                         }
 845                 }
 846 }
 847
 848 static void image_osd_icons_update(OverlayStateData *osd)
 849 {
 850         gint i;
 851
 852         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 853                 {
 854                 if (osd->icon_time[i] > 0)
 855                         {
 856                         image_osd_icon_show(osd, i);
 857                         }
 858                 else
 859                         {
 860                         image_osd_icon_hide(osd, i);
 861                         }
 862                 }
 863 }
 864
 865 static void image_osd_icons_hide(OverlayStateData *osd)
 866 {
 867         gint i;
 868
 869         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 870                 {
 871                 image_osd_icon_hide(osd, i);
 872                 }
 873 }
 874
 875 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 876 {
 877         if (osd->ovl_info == 0)
 878                 {
 879                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, OVL_RELATIVE);
 880                 }
 881         else
 882                 {
 883                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 884                 }
 885 }
 886
 887 static void image_osd_info_hide(OverlayStateData *osd)
 888 {
 889         if (osd->ovl_info == 0) return;
 890
 891         image_overlay_remove(osd->imd, osd->ovl_info);
 892         osd->ovl_info = 0;
 893 }
 894
 895 static gboolean image_osd_update_cb(gpointer data)
 896 {
 897         OverlayStateData *osd = data;
 898
 899         if (osd->show & OSD_SHOW_INFO)
 900                 {
 901                 /* redraw when the image was changed,
 902                    with histogram we have to redraw also when loading is finished */
 903                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 904                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 905                     osd->notify & NOTIFY_HISTMAP)
 906                         {
 907                         GdkPixbuf *pixbuf;
 908
 909                         pixbuf = image_osd_info_render(osd);
 910                         if (pixbuf)
 911                                 {
 912                                 image_osd_info_show(osd, pixbuf);
 913                                 g_object_unref(pixbuf);
 914                                 }
 915                         else
 916                                 {
 917                                 image_osd_info_hide(osd);
 918                                 }
 919                         }
 920                 }
 921         else
 922                 {
 923                 image_osd_info_hide(osd);
 924                 }
 925
 926         if (osd->show & OSD_SHOW_STATUS)
 927                 {
 928                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 929                         image_osd_icons_reset_time(osd);
 930
 931                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 932                         {
 933                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 934                         image_osd_timer_schedule(osd);
 935                         }
 936
 937                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 938                         {
 939                         gint n = 0;
 940
 941                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 942                                 {
 943                                 n = 1;
 944                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 945                                 }
 946
 947                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 948                         image_osd_timer_schedule(osd);
 949                         }
 950
 951                 image_osd_icons_update(osd);
 952                 }
 953         else
 954                 {
 955                 image_osd_icons_hide(osd);
 956                 }
 957
 958         osd->changed_states = IMAGE_STATE_NONE;
 959         osd->notify = 0;
 960         osd->idle_id = 0;
 961         return FALSE;
 962 }
 963
 964 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 965 {
 966         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 967
 968         if (!osd->idle_id)
 969                 {
 970                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 971                 }
 972 }
 973
 974 void image_osd_update(ImageWindow *imd)
 975 {
 976         OverlayStateData *osd = image_get_osd_data(imd);
 977
 978         if (!osd) return;
 979
 980         image_osd_update_schedule(osd, TRUE);
 981 }
 982
 983 static gboolean image_osd_timer_cb(gpointer data)
 984 {
 985         OverlayStateData *osd = data;
 986         gboolean done = TRUE;
 987         gboolean changed = FALSE;
 988         gint i;
 989
 990         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 991                 {
 992                 if (osd->icon_time[i] > 1)
 993                         {
 994                         osd->icon_time[i]--;
 995                         if (osd->icon_time[i] < 2)
 996                                 {
 997                                 osd->icon_time[i] = 0;
 998                                 changed = TRUE;
 999                                 }
1000                         else
1001                                 {
1002                                 done = FALSE;
1003                                 }
1004                         }
1005                 }
1006
1007         if (changed) image_osd_update_schedule(osd, FALSE);
1008
1009         if (done)
1010                 {
1011                 osd->timer_id = 0;
1012                 return FALSE;
1013                 }
1014
1015         return TRUE;
1016 }
1017
1018 static void image_osd_timer_schedule(OverlayStateData *osd)
1019 {
1020         if (!osd->timer_id)
1021                 {
1022                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
1023                 }
1024 }
1025
1026 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
1027 {
1028         OverlayStateData *osd = data;
1029
1030         osd->changed_states |= state;
1031         image_osd_update_schedule(osd, FALSE);
1032 }
1033
1034 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
1035 {
1036         OverlayStateData *osd = data;
1037
1038         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
1039                 {
1040                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
1041                 osd->notify |= type;
1042                 image_osd_update_schedule(osd, FALSE);
1043                 }
1044 }
1045
1046
1047 static void image_osd_free(OverlayStateData *osd)
1048 {
1049         if (!osd) return;
1050
1051         if (osd->idle_id) g_source_remove(osd->idle_id);
1052         if (osd->timer_id) g_source_remove(osd->timer_id);
1053
1054         file_data_unregister_notify_func(image_osd_notify_cb, osd);
1055
1056         if (osd->imd)
1057                 {
1058                 image_set_osd_data(osd->imd, NULL);
1059                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
1060
1061                 image_set_state_func(osd->imd, NULL, NULL);
1062
1063                 image_osd_info_hide(osd);
1064                 image_osd_icons_hide(osd);
1065                 }
1066
1067         if (osd->histogram) histogram_free(osd->histogram);
1068
1069         g_free(osd);
1070 }
1071
1072 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
1073 {
1074         OverlayStateData *osd = data;
1075
1076         osd->imd = NULL;
1077         image_osd_free(osd);
1078 }
1079
1080 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
1081 {
1082         OverlayStateData *osd = image_get_osd_data(imd);
1083
1084         if (!osd)
1085                 {
1086                 osd = g_new0(OverlayStateData, 1);
1087                 osd->imd = imd;
1088                 osd->show = OSD_SHOW_NOTHING;
1089                 osd->x = options->image_overlay.x;
1090                 osd->y = options->image_overlay.y;
1091
1092                 osd->histogram = histogram_new();
1093
1094                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
1095                                                    G_CALLBACK(image_osd_destroy_cb), osd);
1096                 image_set_osd_data(imd, osd);
1097
1098                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
1099                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
1100                 }
1101
1102         if (show & OSD_SHOW_STATUS)
1103                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
1104
1105         if (show != osd->show)
1106                 image_osd_update_schedule(osd, TRUE);
1107
1108         osd->show = show;
1109 }
1110
1111 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
1112 {
1113         if (!imd) return;
1114
1115         image_osd_enable(imd, show);
1116 }
1117
1118 OsdShowFlags image_osd_get(ImageWindow *imd)
1119 {
1120         OverlayStateData *osd = image_get_osd_data(imd);
1121
1122         return osd ? osd->show : OSD_SHOW_NOTHING;
1123 }
1124
1125 Histogram *image_osd_get_histogram(ImageWindow *imd)
1126 {
1127         OverlayStateData *osd = image_get_osd_data(imd);
1128
1129         return osd ? osd->histogram : NULL;
1130 }
1131
1132 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
1133 {
1134         Histogram *h_src, *h_dest;
1135         image_osd_set(dest, image_osd_get(src));
1136
1137         h_src = image_osd_get_histogram(src);
1138         h_dest = image_osd_get_histogram(dest);
1139
1140         h_dest->histogram_mode = h_src->histogram_mode;
1141         h_dest->histogram_channel = h_src->histogram_channel;
1142
1143 }
1144
1145 /* duration:
1146     0 = hide
1147     1 = show
1148    2+ = show for duration tenths of a second
1149    -1 = use default duration
1150  */
1151 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1152 {
1153         OverlayStateData *osd = image_get_osd_data(imd);
1154
1155         if (!osd) return;
1156
1157         if (flag >= IMAGE_OSD_COUNT) return;
1158         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1159         if (duration > 1) duration += 1;
1160
1161         osd->icon_time[flag] = duration;
1162
1163         image_osd_update_schedule(osd, FALSE);
1164         image_osd_timer_schedule(osd);
1165 }
1166 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */