src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2012 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include "main.h"
  14 #include "image-overlay.h"
  15
  16 #include "collect.h"
  17 #include "exif.h"
  18 #include "filedata.h"
  19 #include "histogram.h"
  20 #include "image.h"
  21 #include "img-view.h"
  22 #include "layout.h"
  23 #include "metadata.h"
  24 #include "pixbuf-renderer.h"
  25 #include "pixbuf_util.h"
  26 #include "ui_fileops.h"
  27 #include "image-load.h"
  28 #include "glua.h"
  29
  30 /*
  31  *----------------------------------------------------------------------------
  32  * image overlay
  33  *----------------------------------------------------------------------------
  34  */
  35
  36
  37 typedef struct _OverlayStateData OverlayStateData;
  38 struct _OverlayStateData {
  39         ImageWindow *imd;
  40         ImageState changed_states;
  41         NotifyType notify;
  42
  43         Histogram *histogram;
  44
  45         OsdShowFlags show;
  46
  47         gint ovl_info;
  48
  49         gint x;
  50         gint y;
  51
  52         gint icon_time[IMAGE_OSD_COUNT];
  53         gint icon_id[IMAGE_OSD_COUNT];
  54
  55         guint idle_id; /* event source id */
  56         guint timer_id; /* event source id */
  57         gulong destroy_id;
  58 };
  59
  60
  61 typedef struct _OSDIcon OSDIcon;
  62 struct _OSDIcon {
  63         gboolean reset; /* reset on new image */
  64         gint x;         /* x, y offset */
  65         gint y;
  66         gchar *key;     /* inline pixbuf */
  67 };
  68
  69 static OSDIcon osd_icons[] = {
  70         {  TRUE,   0,   0, NULL },                      /* none */
  71         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  72         {  TRUE, -10, -10, NULL },                      /* user rotated */
  73         {  TRUE, -40, -10, NULL },                      /* color embedded */
  74         {  TRUE, -70, -10, NULL },                      /* first image */
  75         {  TRUE, -70, -10, NULL },                      /* last image */
  76         { FALSE, -70, -10, NULL },                      /* osd enabled */
  77         { FALSE, 0, 0, NULL }
  78 };
  79
  80 #define OSD_DATA "overlay-data"
  81
  82 #define IMAGE_OSD_DEFAULT_DURATION 30
  83
  84 #define HISTOGRAM_HEIGHT 140
  85 #define HISTOGRAM_WIDTH  256
  86
  87 static void image_osd_timer_schedule(OverlayStateData *osd);
  88
  89 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  90 {
  91         g_assert(template_string);
  92
  93         g_free(*template_string);
  94         *template_string = g_strdup(value);
  95 }
  96
  97
  98 void set_default_image_overlay_template_string(gchar **template_string)
  99 {
 100         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 101 }
 102
 103 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 104 {
 105         g_assert(font_string);
 106
 107         g_free(*font_string);
 108         *font_string = g_strdup(value);
 109 }
 110
 111 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 112 {
 113         OverlayStateData *osd;
 114
 115         if (!imd) return NULL;
 116
 117         g_assert(imd->pr);
 118
 119         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 120         return osd;
 121 }
 122
 123 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 124 {
 125         g_assert(imd);
 126         g_assert(imd->pr);
 127         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 128 }
 129
 130 /*
 131  *----------------------------------------------------------------------------
 132  * image histogram
 133  *----------------------------------------------------------------------------
 134  */
 135
 136
 137 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 138 {
 139         OverlayStateData *osd = image_get_osd_data(imd);
 140
 141         if (!osd || !osd->histogram) return;
 142
 143         histogram_toggle_channel(osd->histogram);
 144         image_osd_update(imd);
 145 }
 146
 147 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 148 {
 149         OverlayStateData *osd = image_get_osd_data(imd);
 150
 151         if (!osd || !osd->histogram) return;
 152
 153         histogram_toggle_mode(osd->histogram);
 154         image_osd_update(imd);
 155 }
 156
 157 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 158 {
 159         OverlayStateData *osd = image_get_osd_data(imd);
 160
 161         if (!osd || !osd->histogram) return;
 162
 163         histogram_set_channel(osd->histogram, chan);
 164         image_osd_update(imd);
 165 }
 166
 167 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 168 {
 169         OverlayStateData *osd = image_get_osd_data(imd);
 170
 171         if (!osd || !osd->histogram) return;
 172
 173         histogram_set_mode(osd->histogram, mode);
 174         image_osd_update(imd);
 175 }
 176
 177 gint image_osd_histogram_get_channel(ImageWindow *imd)
 178 {
 179         OverlayStateData *osd = image_get_osd_data(imd);
 180
 181         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 182
 183         return histogram_get_channel(osd->histogram);
 184 }
 185
 186 gint image_osd_histogram_get_mode(ImageWindow *imd)
 187 {
 188         OverlayStateData *osd = image_get_osd_data(imd);
 189
 190         if (!osd || !osd->histogram) return 0;
 191
 192         return histogram_get_mode(osd->histogram);
 193 }
 194
 195 void image_osd_toggle(ImageWindow *imd)
 196 {
 197         OsdShowFlags show;
 198
 199         if (!imd) return;
 200
 201         show = image_osd_get(imd);
 202         if (show == OSD_SHOW_NOTHING)
 203                 {
 204                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 205                 return;
 206                 }
 207         else
 208                 {
 209                 if (show & OSD_SHOW_HISTOGRAM)
 210                         {
 211                         image_osd_set(imd, OSD_SHOW_NOTHING);
 212                         }
 213                 else
 214                         {
 215                         image_osd_set(imd, show | OSD_SHOW_HISTOGRAM);
 216                         }
 217                 }
 218 }
 219
 220 static gchar *keywords_to_string(FileData *fd)
 221 {
 222         GList *keywords;
 223         GString *kwstr = NULL;
 224         gchar *ret = NULL;
 225
 226         g_assert(fd);
 227
 228         keywords = metadata_read_list(fd, KEYWORD_KEY, METADATA_PLAIN);
 229
 230         if (keywords)
 231                 {
 232                 GList *work = keywords;
 233
 234                 while (work)
 235                         {
 236                         gchar *kw = work->data;
 237                         work = work->next;
 238
 239                         if (!kw) continue;
 240                         if (!kwstr)
 241                                 kwstr = g_string_new("");
 242                         else
 243                                 g_string_append(kwstr, ", ");
 244
 245                         g_string_append(kwstr, kw);
 246                         }
 247                 string_list_free(keywords);
 248                 }
 249
 250         if (kwstr)
 251                 {
 252                 ret = kwstr->str;
 253                 g_string_free(kwstr, FALSE);
 254                 }
 255
 256         return ret;
 257 }
 258
 259 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 260 {
 261         gchar delim = '%', imp = '|', sep[] = " - ";
 262         gchar *start, *end;
 263         guint pos, prev;
 264         gboolean want_separator = FALSE;
 265         gchar *name, *data;
 266         GString *new;
 267         gchar *ret;
 268
 269         if (!str || !*str) return g_strdup("");
 270
 271         new = g_string_new(str);
 272
 273         prev = -1;
 274
 275         while (TRUE)
 276                 {
 277                 guint limit = 0;
 278                 gchar *trunc = NULL;
 279                 gchar *limpos = NULL;
 280                 gchar *extra = NULL;
 281                 gchar *extrapos = NULL;
 282                 gchar *p;
 283
 284                 start = strchr(new->str + (prev + 1), delim);
 285                 if (!start)
 286                         break;
 287                 end = strchr(start+1, delim);
 288                 if (!end)
 289                         break;
 290
 291                 /* Search for optionnal modifiers
 292                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 293                  */
 294                 for (p = start + 1; p < end; p++)
 295                         {
 296                         if (p[0] == ':')
 297                                 {
 298                                 if (g_ascii_isdigit(p[1]) && !limpos)
 299                                         {
 300                                         limpos = p + 1;
 301                                         if (!trunc) trunc = p;
 302                                         }
 303                                 else
 304                                         {
 305                                         extrapos = p + 1;
 306                                         if (!trunc) trunc = p;
 307                                         break;
 308                                         }
 309                                 }
 310                         }
 311
 312                 if (limpos)
 313                         limit = (guint) atoi(limpos);
 314
 315                 if (extrapos)
 316                         extra = g_strndup(extrapos, end - extrapos);
 317
 318                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 319                 pos = start - new->str;
 320                 data = NULL;
 321
 322                 if (strcmp(name, "keywords") == 0)
 323                         {
 324                         data = keywords_to_string(imd->image_fd);
 325                         }
 326                 else if (strcmp(name, "comment") == 0)
 327                         {
 328                         data = metadata_read_string(imd->image_fd, COMMENT_KEY, METADATA_PLAIN);
 329                         }
 330 #ifdef HAVE_LUA
 331                 else if (strncmp(name, "lua/", 4) == 0)
 332                         {
 333                         gchar *tmp;
 334                         tmp = strchr(name+4, '/');
 335                         if (!tmp)
 336                                 break;
 337                         *tmp = '\0';
 338                         data = lua_callvalue(imd->image_fd, name+4, tmp+1);
 339                         }
 340 #endif
 341                 else
 342                         {
 343                         data = g_strdup(g_hash_table_lookup(vars, name));
 344                         if (!data)
 345                                 data = metadata_read_string(imd->image_fd, name, METADATA_FORMATTED);
 346                         }
 347
 348                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 349                         {
 350                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 351                         g_free(data);
 352                         data = new_data;
 353                         }
 354
 355                 if (data)
 356                         {
 357                         /* Since we use pango markup to display, we need to escape here */
 358                         gchar *escaped = g_markup_escape_text(data, -1);
 359                         g_free(data);
 360                         data = escaped;
 361                         }
 362
 363                 if (extra)
 364                         {
 365                         if (data && *data)
 366                                 {
 367                                 /* Display data between left and right parts of extra string
 368                                  * the data is expressed by a '*' character. A '*' may be escaped
 369                                  * by a \. You should escape all '*' characters, do not rely on the
 370                                  * current implementation which only replaces the first unescaped '*'.
 371                                  * If no "*" is present, the extra string is just appended to data string.
 372                                  * Pango mark up is accepted in left and right parts.
 373                                  * Any \n is replaced by a newline
 374                                  * Examples:
 375                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 376                                  * "\n"         -> ended with newline
 377                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 378                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 379                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 380                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 381                                  *
 382                                  * FIXME: using background / foreground colors lead to weird results.
 383                                  */
 384                                 gchar *new_data;
 385                                 gchar *left = NULL;
 386                                 gchar *right = extra;
 387                                 gchar *p;
 388                                 guint len = strlen(extra);
 389
 390                                 /* Search for left and right parts and unescape characters */
 391                                 for (p = extra; *p; p++, len--)
 392                                         if (p[0] == '\\')
 393                                                 {
 394                                                 if (p[1] == 'n')
 395                                                         {
 396                                                         memmove(p+1, p+2, --len);
 397                                                         p[0] = '\n';
 398                                                         }
 399                                                 else if (p[1] != '\0')
 400                                                         memmove(p, p+1, len--); // includes \0
 401                                                 }
 402                                         else if (p[0] == '*' && !left)
 403                                                 {
 404                                                 right = p + 1;
 405                                                 left = extra;
 406                                                 }
 407
 408                                 if (left) right[-1] = '\0';
 409
 410                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 411                                 g_free(data);
 412                                 data = new_data;
 413                                 }
 414                         g_free(extra);
 415                         }
 416
 417                 g_string_erase(new, pos, end-start+1);
 418                 if (data && *data)
 419                         {
 420                         if (want_separator)
 421                                 {
 422                                 /* insert separator */
 423                                 g_string_insert(new, pos, sep);
 424                                 pos += strlen(sep);
 425                                 want_separator = FALSE;
 426                                 }
 427
 428                         g_string_insert(new, pos, data);
 429                         pos += strlen(data);
 430                 }
 431
 432                 if (pos-prev >= 1 && new->str[pos] == imp)
 433                         {
 434                         /* pipe character is replaced by a separator, delete it
 435                          * and raise a flag if needed */
 436                         g_string_erase(new, pos--, 1);
 437                         want_separator |= (data && *data);
 438                         }
 439
 440                 if (new->str[pos] == '\n') want_separator = FALSE;
 441
 442                 prev = pos - 1;
 443
 444                 g_free(name);
 445                 g_free(data);
 446                 }
 447
 448         /* search and destroy empty lines */
 449         end = new->str;
 450         while ((start = strchr(end, '\n')))
 451                 {
 452                 end = start;
 453                 while (*++(end) == '\n')
 454                         ;
 455                 g_string_erase(new, start-new->str, end-start-1);
 456                 }
 457
 458         g_strchomp(new->str);
 459
 460         ret = new->str;
 461         g_string_free(new, FALSE);
 462
 463         return ret;
 464 }
 465
 466 typedef enum {
 467         OSDT_NONE       = 0,
 468         OSDT_FREE       = 1 << 0,
 469         OSDT_NO_DUP     = 1 << 1
 470 } OsdTemplateFlags;
 471
 472 static void osd_template_insert(GHashTable *vars, gchar *keyword, gchar *value, OsdTemplateFlags flags)
 473 {
 474         if (!value)
 475                 {
 476                 g_hash_table_insert(vars, keyword, g_strdup(""));
 477                 return;
 478                 }
 479
 480         if (flags & OSDT_NO_DUP)
 481                 {
 482                 g_hash_table_insert(vars, keyword, value);
 483                 return;
 484                 }
 485         else
 486                 {
 487                 g_hash_table_insert(vars, keyword, g_strdup(value));
 488                 }
 489
 490         if (flags & OSDT_FREE) g_free((gpointer) value);
 491 }
 492
 493 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 494 {
 495         GdkPixbuf *pixbuf = NULL;
 496         gint width, height;
 497         PangoLayout *layout;
 498         const gchar *name;
 499         gchar *text;
 500         gboolean with_hist;
 501         const HistMap *histmap = NULL;
 502         ImageWindow *imd = osd->imd;
 503         FileData *fd = image_get_fd(imd);
 504         PangoFontDescription *font_desc;
 505
 506         if (!fd) return NULL;
 507
 508         name = image_get_name(imd);
 509         if (name)
 510                 {
 511                 gint n, t;
 512                 CollectionData *cd;
 513                 CollectInfo *info;
 514                 GHashTable *vars;
 515
 516                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 517
 518                 cd = image_get_collection(imd, &info);
 519                 if (cd)
 520                         {
 521                         t = g_list_length(cd->list);
 522                         n = g_list_index(cd->list, info) + 1;
 523                         if (cd->name)
 524                                 {
 525                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 526                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 527                                 else
 528                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 529                                 }
 530                         else
 531                                 {
 532                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 533                                 }
 534                         }
 535                 else
 536                         {
 537                         LayoutWindow *lw = layout_find_by_image(imd);
 538                         if (lw)
 539                                 {
 540                                 if (lw->slideshow)
 541                                         {
 542                                         n = g_list_length(lw->slideshow->list_done);
 543                                         t = n + g_list_length(lw->slideshow->list);
 544                                         if (n == 0) n = t;
 545                                         }
 546                                 else
 547                                         {
 548                                         t = layout_list_count(lw, NULL);
 549                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 550                                         }
 551                                 }
 552                         else if (view_window_find_image(imd, &n, &t))
 553                                 {
 554                                 n++;
 555                                 }
 556                         else
 557                                 {
 558                                 t = 1;
 559                                 n = 1;
 560                                 }
 561
 562                         if (n < 1) n = 1;
 563                         if (t < 1) t = 1;
 564
 565                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 566                         }
 567
 568                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 569                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 570                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 571                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 572                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 573                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 574
 575                 if (!imd->unknown)
 576                         {
 577                         gint w, h;
 578                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 579
 580                         if (imd->delay_flip &&
 581                             imd->il && load_pixbuf &&
 582                             image_get_pixbuf(imd) != load_pixbuf)
 583                                 {
 584                                 w = gdk_pixbuf_get_width(load_pixbuf);
 585                                 h = gdk_pixbuf_get_height(load_pixbuf);
 586                                 }
 587                         else
 588                                 {
 589                                 image_get_image_size(imd, &w, &h);
 590                                 }
 591
 592
 593                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 594                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 595                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 596                         }
 597                 else
 598                         {
 599                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 600                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 601                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 602                         }
 603
 604                 text = image_osd_mkinfo(options->image_overlay.template_string, imd, vars);
 605                 g_hash_table_destroy(vars);
 606
 607         } else {
 608                 /* When does this occur ?? */
 609                 text = g_markup_escape_text(_("Untitled"), -1);
 610         }
 611
 612         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 613         if (with_hist)
 614                 {
 615                 histmap = histmap_get(imd->image_fd);
 616                 if (!histmap)
 617                         {
 618                         histmap_start_idle(imd->image_fd);
 619                         with_hist = FALSE;
 620                         }
 621                 }
 622
 623
 624         {
 625                 gint active_marks = 0;
 626                 gint mark;
 627                 gchar *text2;
 628
 629                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 630                         {
 631                         active_marks += file_data_get_mark(fd, mark);
 632                         }
 633
 634                 if (active_marks > 0)
 635                         {
 636                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 637
 638                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 639                                 {
 640                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 641                                 }
 642
 643                         if (*text)
 644                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 645                         else
 646                                 text2 = g_strdup(buf->str);
 647                         g_string_free(buf, TRUE);
 648                         g_free(text);
 649                         text = text2;
 650                         }
 651
 652                 if (with_hist)
 653                         {
 654                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 655                         if (*text)
 656                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 657                         else
 658                                 text2 = g_strdup(escaped_histogram_label);
 659                         g_free(escaped_histogram_label);
 660                         g_free(text);
 661                         text = text2;
 662                         }
 663         }
 664
 665         font_desc = pango_font_description_from_string(options->image_overlay.font);
 666         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 667         pango_layout_set_font_description(layout, font_desc);
 668
 669         pango_layout_set_markup(layout, text, -1);
 670         g_free(text);
 671
 672         pango_layout_get_pixel_size(layout, &width, &height);
 673         /* with empty text width is set to 0, but not height) */
 674         if (width == 0)
 675                 height = 0;
 676         else if (height == 0)
 677                 width = 0;
 678         if (width > 0) width += 10;
 679         if (height > 0) height += 10;
 680
 681         if (with_hist)
 682                 {
 683                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 684                 height += HISTOGRAM_HEIGHT + 5;
 685                 }
 686
 687         if (width > 0 && height > 0)
 688                 {
 689                 /* TODO: make osd color configurable --Zas */
 690                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 691                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 692                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 693                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 694                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 695                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 696                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 697                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 698                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 699
 700                 if (with_hist)
 701                         {
 702                         gint x = 5;
 703                         gint y = height - HISTOGRAM_HEIGHT - 5;
 704                         gint w = width - 10;
 705
 706                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 707                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 708                         }
 709                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 710         }
 711
 712         g_object_unref(G_OBJECT(layout));
 713
 714         return pixbuf;
 715 }
 716
 717 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 718 {
 719         static GdkPixbuf **icons = NULL;
 720         GdkPixbuf *icon = NULL;
 721
 722         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 723         if (icons[flag]) return icons[flag];
 724
 725         if (osd_icons[flag].key)
 726                 {
 727                 icon = pixbuf_inline(osd_icons[flag].key);
 728                 }
 729
 730         if (!icon)
 731                 {
 732                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 733                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 734                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 735                 switch (flag)
 736                         {
 737                         case IMAGE_OSD_ROTATE_AUTO:
 738                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 739                                                 0, 0, 0, 255,
 740                                                 3, 0, 3, 0);
 741                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 742                                                      20, 9, 14, 15, 14, 3,
 743                                                      0, 0, 0, 255);
 744                                 break;
 745                         case IMAGE_OSD_ROTATE_USER:
 746                                 break;
 747                         case IMAGE_OSD_COLOR:
 748                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 749                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 750                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 751                                 break;
 752                         case IMAGE_OSD_FIRST:
 753                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 754                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 755                                                      12, 5, 18, 11, 6, 11,
 756                                                      0, 0, 0, 255);
 757                                 break;
 758                         case IMAGE_OSD_LAST:
 759                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 760                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 761                                                      12, 18, 6, 12, 18, 12,
 762                                                      0, 0, 0, 255);
 763                                 break;
 764                         case IMAGE_OSD_ICON:
 765                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 766                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 767                                 break;
 768                         default:
 769                                 break;
 770                         }
 771                 }
 772
 773         icons[flag] = icon;
 774
 775         return icon;
 776 }
 777
 778 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 779                               OverlayRendererFlags flags)
 780 {
 781         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 782 }
 783
 784 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 785 {
 786         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 787 }
 788
 789 static void image_overlay_remove(ImageWindow *imd, gint id)
 790 {
 791         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 792 }
 793
 794 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 795 {
 796         GdkPixbuf *pixbuf;
 797
 798         if (osd->icon_id[flag]) return;
 799
 800         pixbuf = image_osd_icon_pixbuf(flag);
 801         if (!pixbuf) return;
 802
 803         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 804                                                osd_icons[flag].x, osd_icons[flag].y,
 805                                                OVL_RELATIVE);
 806 }
 807
 808 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 809 {
 810         if (osd->icon_id[flag])
 811                 {
 812                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 813                 osd->icon_id[flag] = 0;
 814                 }
 815 }
 816
 817 static void image_osd_icons_reset_time(OverlayStateData *osd)
 818 {
 819         gint i;
 820
 821         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 822                 {
 823                 if (osd_icons[i].reset)
 824                         {
 825                         osd->icon_time[i] = 0;
 826                         }
 827                 }
 828 }
 829
 830 static void image_osd_icons_update(OverlayStateData *osd)
 831 {
 832         gint i;
 833
 834         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 835                 {
 836                 if (osd->icon_time[i] > 0)
 837                         {
 838                         image_osd_icon_show(osd, i);
 839                         }
 840                 else
 841                         {
 842                         image_osd_icon_hide(osd, i);
 843                         }
 844                 }
 845 }
 846
 847 static void image_osd_icons_hide(OverlayStateData *osd)
 848 {
 849         gint i;
 850
 851         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 852                 {
 853                 image_osd_icon_hide(osd, i);
 854                 }
 855 }
 856
 857 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 858 {
 859         if (osd->ovl_info == 0)
 860                 {
 861                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, OVL_RELATIVE);
 862                 }
 863         else
 864                 {
 865                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 866                 }
 867 }
 868
 869 static void image_osd_info_hide(OverlayStateData *osd)
 870 {
 871         if (osd->ovl_info == 0) return;
 872
 873         image_overlay_remove(osd->imd, osd->ovl_info);
 874         osd->ovl_info = 0;
 875 }
 876
 877 static gboolean image_osd_update_cb(gpointer data)
 878 {
 879         OverlayStateData *osd = data;
 880
 881         if (osd->show & OSD_SHOW_INFO)
 882                 {
 883                 /* redraw when the image was changed,
 884                    with histogram we have to redraw also when loading is finished */
 885                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 886                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 887                     osd->notify & NOTIFY_HISTMAP)
 888                         {
 889                         GdkPixbuf *pixbuf;
 890
 891                         pixbuf = image_osd_info_render(osd);
 892                         if (pixbuf)
 893                                 {
 894                                 image_osd_info_show(osd, pixbuf);
 895                                 g_object_unref(pixbuf);
 896                                 }
 897                         else
 898                                 {
 899                                 image_osd_info_hide(osd);
 900                                 }
 901                         }
 902                 }
 903         else
 904                 {
 905                 image_osd_info_hide(osd);
 906                 }
 907
 908         if (osd->show & OSD_SHOW_STATUS)
 909                 {
 910                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 911                         image_osd_icons_reset_time(osd);
 912
 913                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 914                         {
 915                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 916                         image_osd_timer_schedule(osd);
 917                         }
 918
 919                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 920                         {
 921                         gint n = 0;
 922
 923                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 924                                 {
 925                                 n = 1;
 926                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 927                                 }
 928
 929                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 930                         image_osd_timer_schedule(osd);
 931                         }
 932
 933                 image_osd_icons_update(osd);
 934                 }
 935         else
 936                 {
 937                 image_osd_icons_hide(osd);
 938                 }
 939
 940         osd->changed_states = IMAGE_STATE_NONE;
 941         osd->notify = 0;
 942         osd->idle_id = 0;
 943         return FALSE;
 944 }
 945
 946 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 947 {
 948         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 949
 950         if (!osd->idle_id)
 951                 {
 952                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 953                 }
 954 }
 955
 956 void image_osd_update(ImageWindow *imd)
 957 {
 958         OverlayStateData *osd = image_get_osd_data(imd);
 959
 960         if (!osd) return;
 961
 962         image_osd_update_schedule(osd, TRUE);
 963 }
 964
 965 static gboolean image_osd_timer_cb(gpointer data)
 966 {
 967         OverlayStateData *osd = data;
 968         gboolean done = TRUE;
 969         gboolean changed = FALSE;
 970         gint i;
 971
 972         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 973                 {
 974                 if (osd->icon_time[i] > 1)
 975                         {
 976                         osd->icon_time[i]--;
 977                         if (osd->icon_time[i] < 2)
 978                                 {
 979                                 osd->icon_time[i] = 0;
 980                                 changed = TRUE;
 981                                 }
 982                         else
 983                                 {
 984                                 done = FALSE;
 985                                 }
 986                         }
 987                 }
 988
 989         if (changed) image_osd_update_schedule(osd, FALSE);
 990
 991         if (done)
 992                 {
 993                 osd->timer_id = 0;
 994                 return FALSE;
 995                 }
 996
 997         return TRUE;
 998 }
 999
1000 static void image_osd_timer_schedule(OverlayStateData *osd)
1001 {
1002         if (!osd->timer_id)
1003                 {
1004                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
1005                 }
1006 }
1007
1008 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
1009 {
1010         OverlayStateData *osd = data;
1011
1012         osd->changed_states |= state;
1013         image_osd_update_schedule(osd, FALSE);
1014 }
1015
1016 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
1017 {
1018         OverlayStateData *osd = data;
1019
1020         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
1021                 {
1022                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
1023                 osd->notify |= type;
1024                 image_osd_update_schedule(osd, FALSE);
1025                 }
1026 }
1027
1028
1029 static void image_osd_free(OverlayStateData *osd)
1030 {
1031         if (!osd) return;
1032
1033         if (osd->idle_id) g_source_remove(osd->idle_id);
1034         if (osd->timer_id) g_source_remove(osd->timer_id);
1035
1036         file_data_unregister_notify_func(image_osd_notify_cb, osd);
1037
1038         if (osd->imd)
1039                 {
1040                 image_set_osd_data(osd->imd, NULL);
1041                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
1042
1043                 image_set_state_func(osd->imd, NULL, NULL);
1044
1045                 image_osd_info_hide(osd);
1046                 image_osd_icons_hide(osd);
1047                 }
1048
1049         if (osd->histogram) histogram_free(osd->histogram);
1050
1051         g_free(osd);
1052 }
1053
1054 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
1055 {
1056         OverlayStateData *osd = data;
1057
1058         osd->imd = NULL;
1059         image_osd_free(osd);
1060 }
1061
1062 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
1063 {
1064         OverlayStateData *osd = image_get_osd_data(imd);
1065
1066         if (!osd)
1067                 {
1068                 osd = g_new0(OverlayStateData, 1);
1069                 osd->imd = imd;
1070                 osd->show = OSD_SHOW_NOTHING;
1071                 osd->x = options->image_overlay.x;
1072                 osd->y = options->image_overlay.y;
1073
1074                 osd->histogram = histogram_new();
1075
1076                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
1077                                                    G_CALLBACK(image_osd_destroy_cb), osd);
1078                 image_set_osd_data(imd, osd);
1079
1080                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
1081                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
1082                 }
1083
1084         if (show & OSD_SHOW_STATUS)
1085                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
1086
1087         if (show != osd->show)
1088                 image_osd_update_schedule(osd, TRUE);
1089
1090         osd->show = show;
1091 }
1092
1093 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
1094 {
1095         if (!imd) return;
1096
1097         image_osd_enable(imd, show);
1098 }
1099
1100 OsdShowFlags image_osd_get(ImageWindow *imd)
1101 {
1102         OverlayStateData *osd = image_get_osd_data(imd);
1103
1104         return osd ? osd->show : OSD_SHOW_NOTHING;
1105 }
1106
1107 Histogram *image_osd_get_histogram(ImageWindow *imd)
1108 {
1109         OverlayStateData *osd = image_get_osd_data(imd);
1110
1111         return osd ? osd->histogram : NULL;
1112 }
1113
1114 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
1115 {
1116         Histogram *h_src, *h_dest;
1117         image_osd_set(dest, image_osd_get(src));
1118
1119         h_src = image_osd_get_histogram(src);
1120         h_dest = image_osd_get_histogram(dest);
1121
1122         h_dest->histogram_mode = h_src->histogram_mode;
1123         h_dest->histogram_channel = h_src->histogram_channel;
1124
1125 }
1126
1127 /* duration:
1128     0 = hide
1129     1 = show
1130    2+ = show for duration tenths of a second
1131    -1 = use default duration
1132  */
1133 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1134 {
1135         OverlayStateData *osd = image_get_osd_data(imd);
1136
1137         if (!osd) return;
1138
1139         if (flag >= IMAGE_OSD_COUNT) return;
1140         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1141         if (duration > 1) duration += 1;
1142
1143         osd->icon_time[flag] = duration;
1144
1145         image_osd_update_schedule(osd, FALSE);
1146         image_osd_timer_schedule(osd);
1147 }
1148 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */