src/image-overlay.c

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