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         OverlayRendererFlags origin;
  56
  57         gint ovl_info;
  58
  59         gint x;
  60         gint y;
  61
  62         gint icon_time[IMAGE_OSD_COUNT];
  63         gint icon_id[IMAGE_OSD_COUNT];
  64
  65         guint idle_id; /* event source id */
  66         guint timer_id; /* event source id */
  67         gulong destroy_id;
  68 };
  69
  70
  71 typedef struct _OSDIcon OSDIcon;
  72 struct _OSDIcon {
  73         gboolean reset; /* reset on new image */
  74         gint x;         /* x, y offset */
  75         gint y;
  76         gchar *key;     /* inline pixbuf */
  77 };
  78
  79 static OSDIcon osd_icons[] = {
  80         {  TRUE,   0,   0, NULL },                      /* none */
  81         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  82         {  TRUE, -10, -10, NULL },                      /* user rotated */
  83         {  TRUE, -40, -10, NULL },                      /* color embedded */
  84         {  TRUE, -70, -10, NULL },                      /* first image */
  85         {  TRUE, -70, -10, NULL },                      /* last image */
  86         { FALSE, -70, -10, NULL },                      /* osd enabled */
  87         { FALSE, 0, 0, NULL }
  88 };
  89
  90 #define OSD_DATA "overlay-data"
  91
  92 #define IMAGE_OSD_DEFAULT_DURATION 30
  93
  94 #define HISTOGRAM_HEIGHT 140
  95 #define HISTOGRAM_WIDTH  256
  96
  97 static void image_osd_timer_schedule(OverlayStateData *osd);
  98
  99 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
 100 {
 101         g_assert(template_string);
 102
 103         g_free(*template_string);
 104         *template_string = g_strdup(value);
 105 }
 106
 107
 108 void set_default_image_overlay_template_string(gchar **template_string)
 109 {
 110         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 111 }
 112
 113 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 114 {
 115         g_assert(font_string);
 116
 117         g_free(*font_string);
 118         *font_string = g_strdup(value);
 119 }
 120
 121 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 122 {
 123         OverlayStateData *osd;
 124
 125         if (!imd) return NULL;
 126
 127         g_assert(imd->pr);
 128
 129         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 130         return osd;
 131 }
 132
 133 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 134 {
 135         g_assert(imd);
 136         g_assert(imd->pr);
 137         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 138 }
 139
 140 /*
 141  *----------------------------------------------------------------------------
 142  * image histogram
 143  *----------------------------------------------------------------------------
 144  */
 145
 146
 147 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 148 {
 149         OverlayStateData *osd = image_get_osd_data(imd);
 150
 151         if (!osd || !osd->histogram) return;
 152
 153         histogram_toggle_channel(osd->histogram);
 154         image_osd_update(imd);
 155 }
 156
 157 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 158 {
 159         OverlayStateData *osd = image_get_osd_data(imd);
 160
 161         if (!osd || !osd->histogram) return;
 162
 163         histogram_toggle_mode(osd->histogram);
 164         image_osd_update(imd);
 165 }
 166
 167 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 168 {
 169         OverlayStateData *osd = image_get_osd_data(imd);
 170
 171         if (!osd || !osd->histogram) return;
 172
 173         histogram_set_channel(osd->histogram, chan);
 174         image_osd_update(imd);
 175 }
 176
 177 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 178 {
 179         OverlayStateData *osd = image_get_osd_data(imd);
 180
 181         if (!osd || !osd->histogram) return;
 182
 183         histogram_set_mode(osd->histogram, mode);
 184         image_osd_update(imd);
 185 }
 186
 187 gint image_osd_histogram_get_channel(ImageWindow *imd)
 188 {
 189         OverlayStateData *osd = image_get_osd_data(imd);
 190
 191         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 192
 193         return histogram_get_channel(osd->histogram);
 194 }
 195
 196 gint image_osd_histogram_get_mode(ImageWindow *imd)
 197 {
 198         OverlayStateData *osd = image_get_osd_data(imd);
 199
 200         if (!osd || !osd->histogram) return 0;
 201
 202         return histogram_get_mode(osd->histogram);
 203 }
 204
 205 void image_osd_toggle(ImageWindow *imd)
 206 {
 207         OsdShowFlags show;
 208
 209         if (!imd) return;
 210
 211         show = image_osd_get(imd);
 212         if (show == OSD_SHOW_NOTHING)
 213                 {
 214                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 215                 return;
 216                 }
 217         else
 218                 {
 219                 if (show & OSD_SHOW_GUIDELINES)
 220                         {
 221                         image_osd_set(imd, OSD_SHOW_NOTHING);
 222                         }
 223                 else if (show & OSD_SHOW_HISTOGRAM)
 224                         {
 225                         image_osd_set(imd, OSD_SHOW_GUIDELINES);
 226                         image_osd_set(imd, show | ~OSD_SHOW_HISTOGRAM);
 227                         }
 228                 else
 229                         {
 230                         image_osd_set(imd, show | OSD_SHOW_HISTOGRAM);
 231                         }
 232                 }
 233 }
 234
 235 static gchar *keywords_to_string(FileData *fd)
 236 {
 237         GList *keywords;
 238         GString *kwstr = NULL;
 239         gchar *ret = NULL;
 240
 241         g_assert(fd);
 242
 243         keywords = metadata_read_list(fd, KEYWORD_KEY, METADATA_PLAIN);
 244
 245         if (keywords)
 246                 {
 247                 GList *work = keywords;
 248
 249                 while (work)
 250                         {
 251                         gchar *kw = work->data;
 252                         work = work->next;
 253
 254                         if (!kw) continue;
 255                         if (!kwstr)
 256                                 kwstr = g_string_new("");
 257                         else
 258                                 g_string_append(kwstr, ", ");
 259
 260                         g_string_append(kwstr, kw);
 261                         }
 262                 string_list_free(keywords);
 263                 }
 264
 265         if (kwstr)
 266                 {
 267                 ret = kwstr->str;
 268                 g_string_free(kwstr, FALSE);
 269                 }
 270
 271         return ret;
 272 }
 273
 274 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 275 {
 276         gchar delim = '%', imp = '|', sep[] = " - ";
 277         gchar *start, *end;
 278         guint pos, prev;
 279         gboolean want_separator = FALSE;
 280         gchar *name, *data;
 281         GString *new;
 282         gchar *ret;
 283
 284         if (!str || !*str) return g_strdup("");
 285
 286         new = g_string_new(str);
 287
 288         prev = -1;
 289
 290         while (TRUE)
 291                 {
 292                 guint limit = 0;
 293                 gchar *trunc = NULL;
 294                 gchar *limpos = NULL;
 295                 gchar *extra = NULL;
 296                 gchar *extrapos = NULL;
 297                 gchar *p;
 298
 299                 start = strchr(new->str + (prev + 1), delim);
 300                 if (!start)
 301                         break;
 302                 end = strchr(start+1, delim);
 303                 if (!end)
 304                         break;
 305
 306                 /* Search for optionnal modifiers
 307                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 308                  */
 309                 for (p = start + 1; p < end; p++)
 310                         {
 311                         if (p[0] == ':')
 312                                 {
 313                                 if (g_ascii_isdigit(p[1]) && !limpos)
 314                                         {
 315                                         limpos = p + 1;
 316                                         if (!trunc) trunc = p;
 317                                         }
 318                                 else
 319                                         {
 320                                         extrapos = p + 1;
 321                                         if (!trunc) trunc = p;
 322                                         break;
 323                                         }
 324                                 }
 325                         }
 326
 327                 if (limpos)
 328                         limit = (guint) atoi(limpos);
 329
 330                 if (extrapos)
 331                         extra = g_strndup(extrapos, end - extrapos);
 332
 333                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 334                 pos = start - new->str;
 335                 data = NULL;
 336
 337                 if (strcmp(name, "keywords") == 0)
 338                         {
 339                         data = keywords_to_string(imd->image_fd);
 340                         }
 341                 else if (strcmp(name, "comment") == 0)
 342                         {
 343                         data = metadata_read_string(imd->image_fd, COMMENT_KEY, METADATA_PLAIN);
 344                         }
 345                 else if (strcmp(name, "imagecomment") == 0)
 346                         {
 347                         data = exif_get_image_comment(imd->image_fd);
 348                         }
 349                 else if (strcmp(name, "rating") == 0)
 350                         {
 351                         data = metadata_read_string(imd->image_fd, RATING_KEY, METADATA_PLAIN);
 352                         }
 353 #ifdef HAVE_LUA
 354                 else if (strncmp(name, "lua/", 4) == 0)
 355                         {
 356                         gchar *tmp;
 357                         tmp = strchr(name+4, '/');
 358                         if (!tmp)
 359                                 break;
 360                         *tmp = '\0';
 361                         data = lua_callvalue(imd->image_fd, name+4, tmp+1);
 362                         }
 363 #endif
 364                 else
 365                         {
 366                         data = g_strdup(g_hash_table_lookup(vars, name));
 367                         if (!data)
 368                                 data = metadata_read_string(imd->image_fd, name, METADATA_FORMATTED);
 369                         }
 370
 371                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 372                         {
 373                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 374                         g_free(data);
 375                         data = new_data;
 376                         }
 377
 378                 if (data)
 379                         {
 380                         /* Since we use pango markup to display, we need to escape here */
 381                         gchar *escaped = g_markup_escape_text(data, -1);
 382                         g_free(data);
 383                         data = escaped;
 384                         }
 385
 386                 if (extra)
 387                         {
 388                         if (data && *data)
 389                                 {
 390                                 /* Display data between left and right parts of extra string
 391                                  * the data is expressed by a '*' character. A '*' may be escaped
 392                                  * by a \. You should escape all '*' characters, do not rely on the
 393                                  * current implementation which only replaces the first unescaped '*'.
 394                                  * If no "*" is present, the extra string is just appended to data string.
 395                                  * Pango mark up is accepted in left and right parts.
 396                                  * Any \n is replaced by a newline
 397                                  * Examples:
 398                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 399                                  * "\n"         -> ended with newline
 400                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 401                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 402                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 403                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 404                                  *
 405                                  * FIXME: using background / foreground colors lead to weird results.
 406                                  */
 407                                 gchar *new_data;
 408                                 gchar *left = NULL;
 409                                 gchar *right = extra;
 410                                 gchar *p;
 411                                 guint len = strlen(extra);
 412
 413                                 /* Search for left and right parts and unescape characters */
 414                                 for (p = extra; *p; p++, len--)
 415                                         if (p[0] == '\\')
 416                                                 {
 417                                                 if (p[1] == 'n')
 418                                                         {
 419                                                         memmove(p+1, p+2, --len);
 420                                                         p[0] = '\n';
 421                                                         }
 422                                                 else if (p[1] != '\0')
 423                                                         memmove(p, p+1, len--); // includes \0
 424                                                 }
 425                                         else if (p[0] == '*' && !left)
 426                                                 {
 427                                                 right = p + 1;
 428                                                 left = extra;
 429                                                 }
 430
 431                                 if (left) right[-1] = '\0';
 432
 433                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 434                                 g_free(data);
 435                                 data = new_data;
 436                                 }
 437                         g_free(extra);
 438                         }
 439
 440                 g_string_erase(new, pos, end-start+1);
 441                 if (data && *data)
 442                         {
 443                         if (want_separator)
 444                                 {
 445                                 /* insert separator */
 446                                 g_string_insert(new, pos, sep);
 447                                 pos += strlen(sep);
 448                                 want_separator = FALSE;
 449                                 }
 450
 451                         g_string_insert(new, pos, data);
 452                         pos += strlen(data);
 453                 }
 454
 455                 if (pos-prev >= 1 && new->str[pos] == imp)
 456                         {
 457                         /* pipe character is replaced by a separator, delete it
 458                          * and raise a flag if needed */
 459                         g_string_erase(new, pos--, 1);
 460                         want_separator |= (data && *data);
 461                         }
 462
 463                 if (new->str[pos] == '\n') want_separator = FALSE;
 464
 465                 prev = pos - 1;
 466
 467                 g_free(name);
 468                 g_free(data);
 469                 }
 470
 471         /* search and destroy empty lines */
 472         end = new->str;
 473         while ((start = strchr(end, '\n')))
 474                 {
 475                 end = start;
 476                 while (*++(end) == '\n')
 477                         ;
 478                 g_string_erase(new, start-new->str, end-start-1);
 479                 }
 480
 481         g_strchomp(new->str);
 482
 483         ret = new->str;
 484         g_string_free(new, FALSE);
 485
 486         return ret;
 487 }
 488
 489 typedef enum {
 490         OSDT_NONE       = 0,
 491         OSDT_FREE       = 1 << 0,
 492         OSDT_NO_DUP     = 1 << 1
 493 } OsdTemplateFlags;
 494
 495 static void osd_template_insert(GHashTable *vars, gchar *keyword, gchar *value, OsdTemplateFlags flags)
 496 {
 497         if (!value)
 498                 {
 499                 g_hash_table_insert(vars, keyword, g_strdup(""));
 500                 return;
 501                 }
 502
 503         if (flags & OSDT_NO_DUP)
 504                 {
 505                 g_hash_table_insert(vars, keyword, value);
 506                 return;
 507                 }
 508         else
 509                 {
 510                 g_hash_table_insert(vars, keyword, g_strdup(value));
 511                 }
 512
 513         if (flags & OSDT_FREE) g_free((gpointer) value);
 514 }
 515
 516 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 517 {
 518         GdkPixbuf *pixbuf = NULL;
 519         gint width, height;
 520         PangoLayout *layout;
 521         const gchar *name;
 522         gchar *text;
 523         gboolean with_hist;
 524         const HistMap *histmap = NULL;
 525         ImageWindow *imd = osd->imd;
 526         FileData *fd = image_get_fd(imd);
 527         PangoFontDescription *font_desc;
 528
 529         if (!fd) return NULL;
 530
 531         name = image_get_name(imd);
 532         if (name)
 533                 {
 534                 gint n, t;
 535                 CollectionData *cd;
 536                 CollectInfo *info;
 537                 GHashTable *vars;
 538
 539                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 540
 541                 cd = image_get_collection(imd, &info);
 542                 if (cd)
 543                         {
 544                         t = g_list_length(cd->list);
 545                         n = g_list_index(cd->list, info) + 1;
 546                         if (cd->name)
 547                                 {
 548                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 549                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 550                                 else
 551                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 552                                 }
 553                         else
 554                                 {
 555                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 556                                 }
 557                         }
 558                 else
 559                         {
 560                         LayoutWindow *lw = layout_find_by_image(imd);
 561                         if (lw)
 562                                 {
 563                                 if (lw->slideshow)
 564                                         {
 565                                         n = g_list_length(lw->slideshow->list_done);
 566                                         t = n + g_list_length(lw->slideshow->list);
 567                                         if (n == 0) n = t;
 568                                         }
 569                                 else
 570                                         {
 571                                         t = layout_list_count(lw, NULL);
 572                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 573                                         }
 574                                 }
 575                         else if (view_window_find_image(imd, &n, &t))
 576                                 {
 577                                 n++;
 578                                 }
 579                         else
 580                                 {
 581                                 t = 1;
 582                                 n = 1;
 583                                 }
 584
 585                         if (n < 1) n = 1;
 586                         if (t < 1) t = 1;
 587
 588                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 589                         }
 590
 591                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 592                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 593                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 594                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 595                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 596                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 597
 598                 if (!imd->unknown)
 599                         {
 600                         gint w, h;
 601                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 602
 603                         if (imd->delay_flip &&
 604                             imd->il && load_pixbuf &&
 605                             image_get_pixbuf(imd) != load_pixbuf)
 606                                 {
 607                                 w = gdk_pixbuf_get_width(load_pixbuf);
 608                                 h = gdk_pixbuf_get_height(load_pixbuf);
 609                                 }
 610                         else
 611                                 {
 612                                 image_get_image_size(imd, &w, &h);
 613                                 }
 614
 615
 616                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 617                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 618                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 619                         }
 620                 else
 621                         {
 622                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 623                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 624                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 625                         }
 626
 627                 text = image_osd_mkinfo(options->image_overlay.template_string, imd, vars);
 628                 g_hash_table_destroy(vars);
 629
 630         } else {
 631                 /* When does this occur ?? */
 632                 text = g_markup_escape_text(_("Untitled"), -1);
 633         }
 634
 635         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 636         if (with_hist)
 637                 {
 638                 histmap = histmap_get(imd->image_fd);
 639                 if (!histmap)
 640                         {
 641                         histmap_start_idle(imd->image_fd);
 642                         with_hist = FALSE;
 643                         }
 644                 }
 645
 646
 647         {
 648                 gint active_marks = 0;
 649                 gint mark;
 650                 gchar *text2;
 651
 652                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 653                         {
 654                         active_marks += file_data_get_mark(fd, mark);
 655                         }
 656
 657                 if (active_marks > 0)
 658                         {
 659                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 660
 661                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 662                                 {
 663                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 664                                 }
 665
 666                         if (*text)
 667                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 668                         else
 669                                 text2 = g_strdup(buf->str);
 670                         g_string_free(buf, TRUE);
 671                         g_free(text);
 672                         text = text2;
 673                         }
 674
 675                 if (with_hist)
 676                         {
 677                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 678                         if (*text)
 679                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 680                         else
 681                                 text2 = g_strdup(escaped_histogram_label);
 682                         g_free(escaped_histogram_label);
 683                         g_free(text);
 684                         text = text2;
 685                         }
 686         }
 687
 688         font_desc = pango_font_description_from_string(options->image_overlay.font);
 689         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 690         pango_layout_set_font_description(layout, font_desc);
 691
 692         pango_layout_set_markup(layout, text, -1);
 693         g_free(text);
 694
 695         pango_layout_get_pixel_size(layout, &width, &height);
 696         /* with empty text width is set to 0, but not height) */
 697         if (width == 0)
 698                 height = 0;
 699         else if (height == 0)
 700                 width = 0;
 701         if (width > 0) width += 10;
 702         if (height > 0) height += 10;
 703
 704         if (with_hist)
 705                 {
 706                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 707                 height += HISTOGRAM_HEIGHT + 5;
 708                 }
 709
 710         if (width > 0 && height > 0)
 711                 {
 712                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 713                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 714                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 715                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 716                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 717                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 718                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 719                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 720                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 721                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 722
 723                 if (with_hist)
 724                         {
 725                         gint x = 5;
 726                         gint y = height - HISTOGRAM_HEIGHT - 5;
 727                         gint w = width - 10;
 728
 729                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 730                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 731                         }
 732                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 733                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 734         }
 735
 736         g_object_unref(G_OBJECT(layout));
 737
 738         return pixbuf;
 739 }
 740
 741 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 742 {
 743         static GdkPixbuf **icons = NULL;
 744         GdkPixbuf *icon = NULL;
 745
 746         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 747         if (icons[flag]) return icons[flag];
 748
 749         if (osd_icons[flag].key)
 750                 {
 751                 icon = pixbuf_inline(osd_icons[flag].key);
 752                 }
 753
 754         if (!icon)
 755                 {
 756                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 757                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 758                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 759                 switch (flag)
 760                         {
 761                         case IMAGE_OSD_ROTATE_AUTO:
 762                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 763                                                 0, 0, 0, 255,
 764                                                 3, 0, 3, 0);
 765                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 766                                                      20, 9, 14, 15, 14, 3,
 767                                                      0, 0, 0, 255);
 768                                 break;
 769                         case IMAGE_OSD_ROTATE_USER:
 770                                 break;
 771                         case IMAGE_OSD_COLOR:
 772                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 773                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 774                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 775                                 break;
 776                         case IMAGE_OSD_FIRST:
 777                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 778                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 779                                                      12, 5, 18, 11, 6, 11,
 780                                                      0, 0, 0, 255);
 781                                 break;
 782                         case IMAGE_OSD_LAST:
 783                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 784                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 785                                                      12, 18, 6, 12, 18, 12,
 786                                                      0, 0, 0, 255);
 787                                 break;
 788                         case IMAGE_OSD_ICON:
 789                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 790                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 791                                 break;
 792                         default:
 793                                 break;
 794                         }
 795                 }
 796
 797         icons[flag] = icon;
 798
 799         return icon;
 800 }
 801
 802 static GdkPixbuf *image_osd_guidelines_render(OverlayStateData *osd)
 803 {
 804         gint width, height;
 805         GdkPixbuf *rectangles;
 806         ImageWindow *imd = osd->imd;
 807
 808         pixbuf_renderer_get_scaled_size((PixbufRenderer *)imd->pr, &width, &height);
 809
 810         if (width && height)
 811                 {
 812                 rectangles = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 813                 if (rectangles)
 814                         {
 815                         pixbuf_set_rect_fill(rectangles, 0, 0, width, height, 255, 255, 255, 0);
 816                         pixbuf_set_rect(rectangles, 0, 0 + (height / 3), width, height / 3,
 817                                                                 0, 0, 0, 255,
 818                                                                 1, 1, 1, 1);
 819                         pixbuf_set_rect(rectangles, 0, 0 + (height / 3 + 1), width, height / 3 - 2,
 820                                                                 255, 255, 255, 255,
 821                                                                 1, 1, 1, 1);
 822
 823                         pixbuf_set_rect(rectangles, 0 + width / 3, 0 , width / 3, height,
 824                                                                 0, 0, 0, 255,
 825                                                                 1, 1, 1, 1);
 826                         pixbuf_set_rect(rectangles, 0 + width / 3 + 1, 0, width / 3 - 2, height,
 827                                                                 255, 255, 255, 255,
 828                                                                 1, 1, 1, 1);
 829                         return rectangles;
 830                         }
 831                 }
 832
 833         return NULL;
 834 }
 835
 836 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 837                               OverlayRendererFlags flags)
 838 {
 839         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 840 }
 841
 842 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 843 {
 844         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 845 }
 846
 847 static void image_overlay_remove(ImageWindow *imd, gint id)
 848 {
 849         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 850 }
 851
 852 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 853 {
 854         GdkPixbuf *pixbuf;
 855
 856         if (osd->icon_id[flag]) return;
 857
 858         pixbuf = image_osd_icon_pixbuf(flag);
 859         if (!pixbuf) return;
 860
 861         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 862                                                osd_icons[flag].x, osd_icons[flag].y,
 863                                                OVL_RELATIVE);
 864 }
 865
 866 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 867 {
 868         if (osd->icon_id[flag])
 869                 {
 870                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 871                 osd->icon_id[flag] = 0;
 872                 }
 873 }
 874
 875 static void image_osd_icons_reset_time(OverlayStateData *osd)
 876 {
 877         gint i;
 878
 879         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 880                 {
 881                 if (osd_icons[i].reset)
 882                         {
 883                         osd->icon_time[i] = 0;
 884                         }
 885                 }
 886 }
 887
 888 static void image_osd_icons_update(OverlayStateData *osd)
 889 {
 890         gint i;
 891
 892         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 893                 {
 894                 if (osd->icon_time[i] > 0)
 895                         {
 896                         image_osd_icon_show(osd, i);
 897                         }
 898                 else
 899                         {
 900                         image_osd_icon_hide(osd, i);
 901                         }
 902                 }
 903 }
 904
 905 static void image_osd_icons_hide(OverlayStateData *osd)
 906 {
 907         gint i;
 908
 909         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 910                 {
 911                 image_osd_icon_hide(osd, i);
 912                 }
 913 }
 914
 915 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 916 {
 917         if (osd->ovl_info == 0)
 918                 {
 919                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 920                 }
 921         else
 922                 {
 923                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 924                 }
 925 }
 926
 927 static void image_osd_info_hide(OverlayStateData *osd)
 928 {
 929         if (osd->ovl_info == 0) return;
 930
 931         image_overlay_remove(osd->imd, osd->ovl_info);
 932         osd->ovl_info = 0;
 933 }
 934
 935 static gboolean image_osd_update_cb(gpointer data)
 936 {
 937         OverlayStateData *osd = data;
 938
 939         if (osd->show & OSD_SHOW_INFO)
 940                 {
 941                 /* redraw when the image was changed,
 942                    with histogram we have to redraw also when loading is finished */
 943                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 944                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 945                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_GUIDELINES) ||
 946                     osd->notify & NOTIFY_HISTMAP)
 947                         {
 948                         GdkPixbuf *pixbuf;
 949
 950                         if (osd->show & OSD_SHOW_GUIDELINES)
 951                                 {
 952                                 ImageWindow *imd = osd->imd;
 953                                 osd->x = ((PixbufRenderer *)imd->pr)->x_offset;
 954                                 osd->y = ((PixbufRenderer *)imd->pr)->y_offset;
 955                                 osd->origin = OVL_NORMAL;
 956
 957                                 pixbuf = image_osd_guidelines_render(osd);
 958                                 if (pixbuf)
 959                                         {
 960                                         image_osd_info_show(osd, pixbuf);
 961                                         g_object_unref(pixbuf);
 962                                         }
 963
 964                                 osd->x = options->image_overlay.x;
 965                                 osd->y = options->image_overlay.y;
 966                                 osd->origin = OVL_RELATIVE;
 967                                 }
 968                         else
 969                                 {
 970                                 pixbuf = image_osd_info_render(osd);
 971                                 if (pixbuf)
 972                                         {
 973                                         image_osd_info_show(osd, pixbuf);
 974                                         g_object_unref(pixbuf);
 975                                         }
 976                                 else
 977                                         {
 978                                         image_osd_info_hide(osd);
 979                                         }
 980                                 }
 981                         }
 982                 }
 983         else
 984                 {
 985                 image_osd_info_hide(osd);
 986                 }
 987
 988         if (osd->show & OSD_SHOW_STATUS)
 989                 {
 990                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 991                         image_osd_icons_reset_time(osd);
 992
 993                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 994                         {
 995                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 996                         image_osd_timer_schedule(osd);
 997                         }
 998
 999                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
1000                         {
1001                         gint n = 0;
1002
1003                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
1004                                 {
1005                                 n = 1;
1006                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
1007                                 }
1008
1009                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
1010                         image_osd_timer_schedule(osd);
1011                         }
1012
1013                 image_osd_icons_update(osd);
1014                 }
1015         else
1016                 {
1017                 image_osd_icons_hide(osd);
1018                 }
1019
1020         osd->changed_states = IMAGE_STATE_NONE;
1021         osd->notify = 0;
1022         osd->idle_id = 0;
1023         return FALSE;
1024 }
1025
1026 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
1027 {
1028         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
1029
1030         if (!osd->idle_id)
1031                 {
1032                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
1033                 }
1034 }
1035
1036 void image_osd_update(ImageWindow *imd)
1037 {
1038         OverlayStateData *osd = image_get_osd_data(imd);
1039
1040         if (!osd) return;
1041
1042         image_osd_update_schedule(osd, TRUE);
1043 }
1044
1045 static gboolean image_osd_timer_cb(gpointer data)
1046 {
1047         OverlayStateData *osd = data;
1048         gboolean done = TRUE;
1049         gboolean changed = FALSE;
1050         gint i;
1051
1052         for (i = 0; i < IMAGE_OSD_COUNT; i++)
1053                 {
1054                 if (osd->icon_time[i] > 1)
1055                         {
1056                         osd->icon_time[i]--;
1057                         if (osd->icon_time[i] < 2)
1058                                 {
1059                                 osd->icon_time[i] = 0;
1060                                 changed = TRUE;
1061                                 }
1062                         else
1063                                 {
1064                                 done = FALSE;
1065                                 }
1066                         }
1067                 }
1068
1069         if (changed) image_osd_update_schedule(osd, FALSE);
1070
1071         if (done)
1072                 {
1073                 osd->timer_id = 0;
1074                 return FALSE;
1075                 }
1076
1077         return TRUE;
1078 }
1079
1080 static void image_osd_timer_schedule(OverlayStateData *osd)
1081 {
1082         if (!osd->timer_id)
1083                 {
1084                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
1085                 }
1086 }
1087
1088 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
1089 {
1090         OverlayStateData *osd = data;
1091
1092         osd->changed_states |= state;
1093         image_osd_update_schedule(osd, FALSE);
1094 }
1095
1096 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
1097 {
1098         OverlayStateData *osd = data;
1099
1100         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
1101                 {
1102                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
1103                 osd->notify |= type;
1104                 image_osd_update_schedule(osd, FALSE);
1105                 }
1106 }
1107
1108
1109 static void image_osd_free(OverlayStateData *osd)
1110 {
1111         if (!osd) return;
1112
1113         if (osd->idle_id) g_source_remove(osd->idle_id);
1114         if (osd->timer_id) g_source_remove(osd->timer_id);
1115
1116         file_data_unregister_notify_func(image_osd_notify_cb, osd);
1117
1118         if (osd->imd)
1119                 {
1120                 image_set_osd_data(osd->imd, NULL);
1121                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
1122
1123                 image_set_state_func(osd->imd, NULL, NULL);
1124
1125                 image_osd_info_hide(osd);
1126                 image_osd_icons_hide(osd);
1127                 }
1128
1129         if (osd->histogram) histogram_free(osd->histogram);
1130
1131         g_free(osd);
1132 }
1133
1134 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
1135 {
1136         OverlayStateData *osd = data;
1137
1138         osd->imd = NULL;
1139         image_osd_free(osd);
1140 }
1141
1142 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
1143 {
1144         OverlayStateData *osd = image_get_osd_data(imd);
1145
1146         if (!osd)
1147                 {
1148                 osd = g_new0(OverlayStateData, 1);
1149                 osd->imd = imd;
1150                 osd->show = OSD_SHOW_NOTHING;
1151                 osd->x = options->image_overlay.x;
1152                 osd->y = options->image_overlay.y;
1153                 osd->origin = OVL_RELATIVE;
1154
1155                 osd->histogram = histogram_new();
1156
1157                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
1158                                                    G_CALLBACK(image_osd_destroy_cb), osd);
1159                 image_set_osd_data(imd, osd);
1160
1161                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
1162                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
1163                 }
1164
1165         if (show & OSD_SHOW_STATUS)
1166                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
1167
1168         if (show != osd->show)
1169                 image_osd_update_schedule(osd, TRUE);
1170
1171         osd->show = show;
1172 }
1173
1174 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
1175 {
1176         if (!imd) return;
1177
1178         image_osd_enable(imd, show);
1179 }
1180
1181 OsdShowFlags image_osd_get(ImageWindow *imd)
1182 {
1183         OverlayStateData *osd = image_get_osd_data(imd);
1184
1185         return osd ? osd->show : OSD_SHOW_NOTHING;
1186 }
1187
1188 Histogram *image_osd_get_histogram(ImageWindow *imd)
1189 {
1190         OverlayStateData *osd = image_get_osd_data(imd);
1191
1192         return osd ? osd->histogram : NULL;
1193 }
1194
1195 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
1196 {
1197         Histogram *h_src, *h_dest;
1198         image_osd_set(dest, image_osd_get(src));
1199
1200         h_src = image_osd_get_histogram(src);
1201         h_dest = image_osd_get_histogram(dest);
1202
1203         h_dest->histogram_mode = h_src->histogram_mode;
1204         h_dest->histogram_channel = h_src->histogram_channel;
1205
1206 }
1207
1208 /* duration:
1209     0 = hide
1210     1 = show
1211    2+ = show for duration tenths of a second
1212    -1 = use default duration
1213  */
1214 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1215 {
1216         OverlayStateData *osd = image_get_osd_data(imd);
1217
1218         if (!osd) return;
1219
1220         if (flag >= IMAGE_OSD_COUNT) return;
1221         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1222         if (duration > 1) duration += 1;
1223
1224         osd->icon_time[flag] = duration;
1225
1226         image_osd_update_schedule(osd, FALSE);
1227         image_osd_timer_schedule(osd);
1228 }
1229 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */