src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 - 2009 The Geeqie Team
   5  *
   6  * Author: John Ellis
   7  *
   8  * This software is released under the GNU General Public License (GNU GPL).
   9  * Please read the included file COPYING for more information.
  10  * This software comes with no warranty of any kind, use at your own risk!
  11  */
  12
  13 #include "main.h"
  14 #include "image-overlay.h"
  15
  16 #include "collect.h"
  17 #include "exif.h"
  18 #include "filedata.h"
  19 #include "histogram.h"
  20 #include "image.h"
  21 #include "img-view.h"
  22 #include "layout.h"
  23 #include "metadata.h"
  24 #include "pixbuf-renderer.h"
  25 #include "pixbuf_util.h"
  26 #include "ui_fileops.h"
  27 #include "image-load.h"
  28
  29 /*
  30  *----------------------------------------------------------------------------
  31  * image overlay
  32  *----------------------------------------------------------------------------
  33  */
  34
  35
  36 typedef struct _OverlayStateData OverlayStateData;
  37 struct _OverlayStateData {
  38         ImageWindow *imd;
  39         ImageState changed_states;
  40         NotifyType notify;
  41
  42         Histogram *histogram;
  43
  44         OsdShowFlags show;
  45
  46         gint ovl_info;
  47
  48         gint x;
  49         gint y;
  50
  51         gint icon_time[IMAGE_OSD_COUNT];
  52         gint icon_id[IMAGE_OSD_COUNT];
  53
  54         guint idle_id; /* event source id */
  55         guint timer_id; /* event source id */
  56         gulong destroy_id;
  57 };
  58
  59
  60 typedef struct _OSDIcon OSDIcon;
  61 struct _OSDIcon {
  62         gboolean reset; /* reset on new image */
  63         gint x;         /* x, y offset */
  64         gint y;
  65         gchar *key;     /* inline pixbuf */
  66 };
  67
  68 static OSDIcon osd_icons[] = {
  69         {  TRUE,   0,   0, NULL },                      /* none */
  70         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  71         {  TRUE, -10, -10, NULL },                      /* user rotated */
  72         {  TRUE, -40, -10, NULL },                      /* color embedded */
  73         {  TRUE, -70, -10, NULL },                      /* first image */
  74         {  TRUE, -70, -10, NULL },                      /* last image */
  75         { FALSE, -70, -10, NULL },                      /* osd enabled */
  76         { FALSE, 0, 0, NULL }
  77 };
  78
  79 #define OSD_DATA "overlay-data"
  80
  81 #define IMAGE_OSD_DEFAULT_DURATION 30
  82
  83 #define HISTOGRAM_HEIGHT 140
  84 #define HISTOGRAM_WIDTH  256
  85
  86 static void image_osd_timer_schedule(OverlayStateData *osd);
  87
  88 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  89 {
  90         g_assert(template_string);
  91
  92         g_free(*template_string);
  93         *template_string = g_strdup(value);
  94 }
  95
  96
  97 void set_default_image_overlay_template_string(gchar **template_string)
  98 {
  99         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 100 }
 101
 102 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 103 {
 104         OverlayStateData *osd;
 105
 106         if (!imd) return NULL;
 107
 108         g_assert(imd->pr);
 109
 110         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 111         return osd;
 112 }
 113
 114 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 115 {
 116         g_assert(imd);
 117         g_assert(imd->pr);
 118         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 119 }
 120
 121 /*
 122  *----------------------------------------------------------------------------
 123  * image histogram
 124  *----------------------------------------------------------------------------
 125  */
 126
 127
 128 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 129 {
 130         OverlayStateData *osd = image_get_osd_data(imd);
 131
 132         if (!osd || !osd->histogram) return;
 133
 134         histogram_toggle_channel(osd->histogram);
 135         image_osd_update(imd);
 136 }
 137
 138 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 139 {
 140         OverlayStateData *osd = image_get_osd_data(imd);
 141
 142         if (!osd || !osd->histogram) return;
 143
 144         histogram_toggle_mode(osd->histogram);
 145         image_osd_update(imd);
 146 }
 147
 148 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 149 {
 150         OverlayStateData *osd = image_get_osd_data(imd);
 151
 152         if (!osd || !osd->histogram) return;
 153
 154         histogram_set_channel(osd->histogram, chan);
 155         image_osd_update(imd);
 156 }
 157
 158 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 159 {
 160         OverlayStateData *osd = image_get_osd_data(imd);
 161
 162         if (!osd || !osd->histogram) return;
 163
 164         histogram_set_mode(osd->histogram, mode);
 165         image_osd_update(imd);
 166 }
 167
 168 gint image_osd_histogram_get_channel(ImageWindow *imd)
 169 {
 170         OverlayStateData *osd = image_get_osd_data(imd);
 171
 172         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 173
 174         return histogram_get_channel(osd->histogram);
 175 }
 176
 177 gint image_osd_histogram_get_mode(ImageWindow *imd)
 178 {
 179         OverlayStateData *osd = image_get_osd_data(imd);
 180
 181         if (!osd || !osd->histogram) return 0;
 182
 183         return histogram_get_mode(osd->histogram);
 184 }
 185
 186 void image_osd_toggle(ImageWindow *imd)
 187 {
 188         OsdShowFlags show;
 189
 190         if (!imd) return;
 191
 192         show = image_osd_get(imd);
 193         if (show == OSD_SHOW_NOTHING)
 194                 {
 195                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 196                 return;
 197                 }
 198         else
 199                 {
 200                 if (show & OSD_SHOW_HISTOGRAM)
 201                         {
 202                         image_osd_set(imd, OSD_SHOW_NOTHING);
 203                         }
 204                 else
 205                         {
 206                         image_osd_set(imd, show | OSD_SHOW_HISTOGRAM);
 207                         }
 208                 }
 209 }
 210
 211 static gchar *keywords_to_string(FileData *fd)
 212 {
 213         GList *keywords;
 214         GString *kwstr = NULL;
 215         gchar *ret = NULL;
 216
 217         g_assert(fd);
 218
 219         keywords = metadata_read_list(fd, KEYWORD_KEY, METADATA_PLAIN);
 220
 221         if (keywords)
 222                 {
 223                 GList *work = keywords;
 224
 225                 while (work)
 226                         {
 227                         gchar *kw = work->data;
 228                         work = work->next;
 229
 230                         if (!kw) continue;
 231                         if (!kwstr)
 232                                 kwstr = g_string_new("");
 233                         else
 234                                 g_string_append(kwstr, ", ");
 235
 236                         g_string_append(kwstr, kw);
 237                         }
 238                 string_list_free(keywords);
 239                 }
 240
 241         if (kwstr)
 242                 {
 243                 ret = kwstr->str;
 244                 g_string_free(kwstr, FALSE);
 245                 }
 246
 247         return ret;
 248 }
 249
 250 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 251 {
 252         gchar delim = '%', imp = '|', sep[] = " - ";
 253         gchar *start, *end;
 254         guint pos, prev;
 255         gboolean want_separator = FALSE;
 256         gchar *name, *data;
 257         GString *new;
 258         gchar *ret;
 259
 260         if (!str || !*str) return g_strdup("");
 261
 262         new = g_string_new(str);
 263
 264         prev = 0;
 265
 266         while (TRUE)
 267                 {
 268                 guint limit = 0;
 269                 gchar *trunc = NULL;
 270                 gchar *limpos = NULL;
 271                 gchar *extra = NULL;
 272                 gchar *extrapos = NULL;
 273                 gchar *p;
 274
 275                 start = strchr(new->str, delim);
 276                 if (!start)
 277                         break;
 278                 end = strchr(start+1, delim);
 279                 if (!end)
 280                         break;
 281
 282                 /* Search for optionnal modifiers
 283                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 284                  */
 285                 for (p = start + 1; p < end; p++)
 286                         {
 287                         if (p[0] == ':')
 288                                 {
 289                                 if (g_ascii_isdigit(p[1]) && !limpos)
 290                                         {
 291                                         limpos = p + 1;
 292                                         if (!trunc) trunc = p;
 293                                         }
 294                                 else
 295                                         {
 296                                         extrapos = p + 1;
 297                                         if (!trunc) trunc = p;
 298                                         break;
 299                                         }
 300                                 }
 301                         }
 302
 303                 if (limpos)
 304                         limit = (guint) atoi(limpos);
 305
 306                 if (extrapos)
 307                         extra = g_strndup(extrapos, end - extrapos);
 308
 309                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 310                 pos = start - new->str;
 311                 data = NULL;
 312
 313                 if (strcmp(name, "keywords") == 0)
 314                         {
 315                         data = keywords_to_string(imd->image_fd);
 316                         }
 317                 else if (strcmp(name, "comment") == 0)
 318                         {
 319                         data = metadata_read_string(imd->image_fd, COMMENT_KEY, METADATA_PLAIN);
 320                         }
 321                 else
 322                         {
 323                         data = g_strdup(g_hash_table_lookup(vars, name));
 324                         if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 325                         if (!data)
 326                                 data = metadata_read_string(imd->image_fd, name, METADATA_FORMATTED);
 327                         }
 328
 329                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 330                         {
 331                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 332                         g_free(data);
 333                         data = new_data;
 334                         }
 335
 336                 if (data)
 337                         {
 338                         /* Since we use pango markup to display, we need to escape here */
 339                         gchar *escaped = g_markup_escape_text(data, -1);
 340                         g_free(data);
 341                         data = escaped;
 342                         }
 343
 344                 if (extra)
 345                         {
 346                         if (data && *data)
 347                                 {
 348                                 /* Display data between left and right parts of extra string
 349                                  * the data is expressed by a '*' character. A '*' may be escaped
 350                                  * by a \. You should escape all '*' characters, do not rely on the
 351                                  * current implementation which only replaces the first unescaped '*'.
 352                                  * If no "*" is present, the extra string is just appended to data string.
 353                                  * Pango mark up is accepted in left and right parts.
 354                                  * Any \n is replaced by a newline
 355                                  * Examples:
 356                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 357                                  * "\n"         -> ended with newline
 358                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 359                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 360                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 361                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 362                                  *
 363                                  * FIXME: using background / foreground colors lead to weird results.
 364                                  */
 365                                 gchar *new_data;
 366                                 gchar *left = NULL;
 367                                 gchar *right = extra;
 368                                 gchar *p;
 369                                 guint len = strlen(extra);
 370
 371                                 /* Search for left and right parts and unescape characters */
 372                                 for (p = extra; *p; p++, len--)
 373                                         if (p[0] == '\\')
 374                                                 {
 375                                                 if (p[1] == 'n')
 376                                                         {
 377                                                         memmove(p+1, p+2, --len);
 378                                                         p[0] = '\n';
 379                                                         }
 380                                                 else if (p[1] != '\0')
 381                                                         memmove(p, p+1, len--); // includes \0
 382                                                 }
 383                                         else if (p[0] == '*' && !left)
 384                                                 {
 385                                                 right = p + 1;
 386                                                 left = extra;
 387                                                 }
 388
 389                                 if (left) right[-1] = '\0';
 390
 391                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 392                                 g_free(data);
 393                                 data = new_data;
 394                                 }
 395                         g_free(extra);
 396                         }
 397
 398                 g_string_erase(new, pos, end-start+1);
 399                 if (data && *data)
 400                         {
 401                         if (want_separator)
 402                                 {
 403                                 /* insert separator */
 404                                 g_string_insert(new, pos, sep);
 405                                 pos += strlen(sep);
 406                                 want_separator = FALSE;
 407                                 }
 408
 409                         g_string_insert(new, pos, data);
 410                         pos += strlen(data);
 411                 }
 412
 413                 if (pos-prev >= 1 && new->str[pos] == imp)
 414                         {
 415                         /* pipe character is replaced by a separator, delete it
 416                          * and raise a flag if needed */
 417                         g_string_erase(new, pos--, 1);
 418                         want_separator |= (data && *data);
 419                         }
 420
 421                 if (new->str[pos] == '\n') want_separator = FALSE;
 422
 423                 prev = pos - 1;
 424
 425                 g_free(name);
 426                 g_free(data);
 427                 }
 428
 429         /* search and destroy empty lines */
 430         end = new->str;
 431         while ((start = strchr(end, '\n')))
 432                 {
 433                 end = start;
 434                 while (*++(end) == '\n')
 435                         ;
 436                 g_string_erase(new, start-new->str, end-start-1);
 437                 }
 438
 439         g_strchomp(new->str);
 440
 441         ret = new->str;
 442         g_string_free(new, FALSE);
 443
 444         return ret;
 445 }
 446
 447 typedef enum {
 448         OSDT_NONE       = 0,
 449         OSDT_FREE       = 1 << 0,
 450         OSDT_NO_DUP     = 1 << 1
 451 } OsdTemplateFlags;
 452
 453 static void osd_template_insert(GHashTable *vars, gchar *keyword, gchar *value, OsdTemplateFlags flags)
 454 {
 455         if (!value)
 456                 {
 457                 g_hash_table_insert(vars, keyword, g_strdup(""));
 458                 return;
 459                 }
 460
 461         if (flags & OSDT_NO_DUP)
 462                 {
 463                 g_hash_table_insert(vars, keyword, value);
 464                 return;
 465                 }
 466         else
 467                 {
 468                 g_hash_table_insert(vars, keyword, g_strdup(value));
 469                 }
 470
 471         if (flags & OSDT_FREE) g_free((gpointer) value);
 472 }
 473
 474 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 475 {
 476         GdkPixbuf *pixbuf = NULL;
 477         gint width, height;
 478         PangoLayout *layout;
 479         const gchar *name;
 480         gchar *text;
 481         GdkPixbuf *imgpixbuf = NULL;
 482         gboolean with_hist;
 483         const HistMap *histmap;
 484         ImageWindow *imd = osd->imd;
 485         FileData *fd = image_get_fd(imd);
 486
 487         if (!fd) return NULL;
 488
 489         name = image_get_name(imd);
 490         if (name)
 491                 {
 492                 gint n, t;
 493                 CollectionData *cd;
 494                 CollectInfo *info;
 495                 GHashTable *vars;
 496
 497                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 498
 499                 cd = image_get_collection(imd, &info);
 500                 if (cd)
 501                         {
 502                         t = g_list_length(cd->list);
 503                         n = g_list_index(cd->list, info) + 1;
 504                         if (cd->name)
 505                                 {
 506                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 507                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 508                                 else
 509                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 510                                 }
 511                         else
 512                                 {
 513                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 514                                 }
 515                         }
 516                 else
 517                         {
 518                         LayoutWindow *lw = layout_find_by_image(imd);
 519                         if (lw)
 520                                 {
 521                                 if (lw->slideshow)
 522                                         {
 523                                         n = g_list_length(lw->slideshow->list_done);
 524                                         t = n + g_list_length(lw->slideshow->list);
 525                                         if (n == 0) n = t;
 526                                         }
 527                                 else
 528                                         {
 529                                         t = layout_list_count(lw, NULL);
 530                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 531                                         }
 532                                 }
 533                         else if (view_window_find_image(imd, &n, &t))
 534                                 {
 535                                 n++;
 536                                 }
 537                         else
 538                                 {
 539                                 t = 1;
 540                                 n = 1;
 541                                 }
 542
 543                         if (n < 1) n = 1;
 544                         if (t < 1) t = 1;
 545
 546                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 547                         }
 548
 549                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 550                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 551                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 552                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 553                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 554                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 555
 556                 if (!imd->unknown)
 557                         {
 558                         gint w, h;
 559                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 560
 561                         if (imd->delay_flip &&
 562                             imd->il && load_pixbuf &&
 563                             image_get_pixbuf(imd) != load_pixbuf)
 564                                 {
 565                                 w = gdk_pixbuf_get_width(load_pixbuf);
 566                                 h = gdk_pixbuf_get_height(load_pixbuf);
 567                                 imgpixbuf = load_pixbuf;
 568                                 }
 569                         else
 570                                 {
 571                                 image_get_image_size(imd, &w, &h);
 572                                 imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 573                                 }
 574
 575
 576                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 577                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 578                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 579                         }
 580                 else
 581                         {
 582                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 583                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 584                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 585                         }
 586
 587                 text = image_osd_mkinfo(options->image_overlay.template_string, imd, vars);
 588                 g_hash_table_destroy(vars);
 589
 590         } else {
 591                 /* When does this occur ?? */
 592                 text = g_markup_escape_text(_("Untitled"), -1);
 593         }
 594
 595         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 596         if (with_hist)
 597                 {
 598                 histmap = histmap_get(imd->image_fd);
 599                 if (!histmap)
 600                         {
 601                         histmap_start_idle(imd->image_fd);
 602                         with_hist = FALSE;
 603                         }
 604                 }
 605
 606
 607         {
 608                 gint active_marks = 0;
 609                 gint mark;
 610                 gchar *text2;
 611
 612                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 613                         {
 614                         active_marks += file_data_get_mark(fd, mark);
 615                         }
 616
 617                 if (active_marks > 0)
 618                         {
 619                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 620
 621                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 622                                 {
 623                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 624                                 }
 625
 626                         if (*text)
 627                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 628                         else
 629                                 text2 = g_strdup(buf->str);
 630                         g_string_free(buf, TRUE);
 631                         g_free(text);
 632                         text = text2;
 633                         }
 634
 635                 if (with_hist)
 636                         {
 637                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 638                         if (*text)
 639                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 640                         else
 641                                 text2 = g_strdup(escaped_histogram_label);
 642                         g_free(escaped_histogram_label);
 643                         g_free(text);
 644                         text = text2;
 645                         }
 646         }
 647
 648         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 649         pango_layout_set_markup(layout, text, -1);
 650         g_free(text);
 651
 652         pango_layout_get_pixel_size(layout, &width, &height);
 653         /* with empty text width is set to 0, but not height) */
 654         if (width == 0)
 655                 height = 0;
 656         else if (height == 0)
 657                 width = 0;
 658         if (width > 0) width += 10;
 659         if (height > 0) height += 10;
 660
 661         if (with_hist)
 662                 {
 663                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 664                 height += HISTOGRAM_HEIGHT + 5;
 665                 }
 666
 667         if (width > 0 && height > 0)
 668                 {
 669                 /* TODO: make osd color configurable --Zas */
 670                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 671                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 672                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 673                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 674                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 675                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 676                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 677                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 678                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 679
 680                 if (with_hist)
 681                         {
 682                         gint x = 5;
 683                         gint y = height - HISTOGRAM_HEIGHT - 5;
 684                         gint w = width - 10;
 685
 686                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 687                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 688                         }
 689                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 690         }
 691
 692         g_object_unref(G_OBJECT(layout));
 693
 694         return pixbuf;
 695 }
 696
 697 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 698 {
 699         static GdkPixbuf **icons = NULL;
 700         GdkPixbuf *icon = NULL;
 701
 702         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 703         if (icons[flag]) return icons[flag];
 704
 705         if (osd_icons[flag].key)
 706                 {
 707                 icon = pixbuf_inline(osd_icons[flag].key);
 708                 }
 709
 710         if (!icon)
 711                 {
 712                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 713                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 714                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 715                 switch (flag)
 716                         {
 717                         case IMAGE_OSD_ROTATE_AUTO:
 718                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 719                                                 0, 0, 0, 255,
 720                                                 3, 0, 3, 0);
 721                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 722                                                      20, 9, 14, 15, 14, 3,
 723                                                      0, 0, 0, 255);
 724                                 break;
 725                         case IMAGE_OSD_ROTATE_USER:
 726                                 break;
 727                         case IMAGE_OSD_COLOR:
 728                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 729                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 730                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 731                                 break;
 732                         case IMAGE_OSD_FIRST:
 733                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 734                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 735                                                      12, 5, 18, 11, 6, 11,
 736                                                      0, 0, 0, 255);
 737                                 break;
 738                         case IMAGE_OSD_LAST:
 739                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 740                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 741                                                      12, 18, 6, 12, 18, 12,
 742                                                      0, 0, 0, 255);
 743                                 break;
 744                         case IMAGE_OSD_ICON:
 745                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 746                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 747                                 break;
 748                         default:
 749                                 break;
 750                         }
 751                 }
 752
 753         icons[flag] = icon;
 754
 755         return icon;
 756 }
 757
 758 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 759                               OverlayRendererFlags flags)
 760 {
 761         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 762 }
 763
 764 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 765 {
 766         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 767 }
 768
 769 #if 0 /* unused for now */
 770 static gint image_overlay_get(ImageWindow *imd, gint id, GdkPixbuf **pixbuf, gint *x, gint *y)
 771 {
 772         return pixbuf_renderer_overlay_get((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 773 }
 774 #endif
 775
 776 static void image_overlay_remove(ImageWindow *imd, gint id)
 777 {
 778         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 779 }
 780
 781 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 782 {
 783         GdkPixbuf *pixbuf;
 784
 785         if (osd->icon_id[flag]) return;
 786
 787         pixbuf = image_osd_icon_pixbuf(flag);
 788         if (!pixbuf) return;
 789
 790         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 791                                                osd_icons[flag].x, osd_icons[flag].y,
 792                                                OVL_RELATIVE);
 793 }
 794
 795 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 796 {
 797         if (osd->icon_id[flag])
 798                 {
 799                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 800                 osd->icon_id[flag] = 0;
 801                 }
 802 }
 803
 804 static void image_osd_icons_reset_time(OverlayStateData *osd)
 805 {
 806         gint i;
 807
 808         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 809                 {
 810                 if (osd_icons[i].reset)
 811                         {
 812                         osd->icon_time[i] = 0;
 813                         }
 814                 }
 815 }
 816
 817 static void image_osd_icons_update(OverlayStateData *osd)
 818 {
 819         gint i;
 820
 821         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 822                 {
 823                 if (osd->icon_time[i] > 0)
 824                         {
 825                         image_osd_icon_show(osd, i);
 826                         }
 827                 else
 828                         {
 829                         image_osd_icon_hide(osd, i);
 830                         }
 831                 }
 832 }
 833
 834 static void image_osd_icons_hide(OverlayStateData *osd)
 835 {
 836         gint i;
 837
 838         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 839                 {
 840                 image_osd_icon_hide(osd, i);
 841                 }
 842 }
 843
 844 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 845 {
 846         if (osd->ovl_info == 0)
 847                 {
 848                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, OVL_RELATIVE);
 849                 }
 850         else
 851                 {
 852                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 853                 }
 854 }
 855
 856 static void image_osd_info_hide(OverlayStateData *osd)
 857 {
 858         if (osd->ovl_info == 0) return;
 859
 860         image_overlay_remove(osd->imd, osd->ovl_info);
 861         osd->ovl_info = 0;
 862 }
 863
 864 static gboolean image_osd_update_cb(gpointer data)
 865 {
 866         OverlayStateData *osd = data;
 867
 868         osd->imd->overlay_show_zoom = FALSE;
 869
 870         if (osd->show & OSD_SHOW_INFO)
 871                 {
 872                 /* redraw when the image was changed,
 873                    with histogram we have to redraw also when loading is finished */
 874                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 875                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 876                     osd->notify & NOTIFY_HISTMAP)
 877                         {
 878                         GdkPixbuf *pixbuf;
 879
 880                         pixbuf = image_osd_info_render(osd);
 881                         if (pixbuf)
 882                                 {
 883                                 image_osd_info_show(osd, pixbuf);
 884                                 g_object_unref(pixbuf);
 885                                 }
 886                         else
 887                                 {
 888                                 image_osd_info_hide(osd);
 889                                 }
 890                         }
 891                 }
 892         else
 893                 {
 894                 image_osd_info_hide(osd);
 895                 }
 896
 897         if (osd->show & OSD_SHOW_STATUS)
 898                 {
 899                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 900                         image_osd_icons_reset_time(osd);
 901
 902                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 903                         {
 904                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 905                         image_osd_timer_schedule(osd);
 906                         }
 907
 908                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 909                         {
 910                         gint n = 0;
 911
 912                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 913                                 {
 914                                 n = 1;
 915                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 916                                 }
 917
 918                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 919                         image_osd_timer_schedule(osd);
 920                         }
 921
 922                 image_osd_icons_update(osd);
 923                 }
 924         else
 925                 {
 926                 image_osd_icons_hide(osd);
 927                 }
 928
 929         osd->changed_states = IMAGE_STATE_NONE;
 930         osd->notify = 0;
 931         osd->idle_id = 0;
 932         return FALSE;
 933 }
 934
 935 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 936 {
 937         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 938
 939         if (!osd->idle_id)
 940                 {
 941                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 942                 }
 943 }
 944
 945 void image_osd_update(ImageWindow *imd)
 946 {
 947         OverlayStateData *osd = image_get_osd_data(imd);
 948
 949         if (!osd) return;
 950
 951         image_osd_update_schedule(osd, TRUE);
 952 }
 953
 954 static gboolean image_osd_timer_cb(gpointer data)
 955 {
 956         OverlayStateData *osd = data;
 957         gboolean done = TRUE;
 958         gboolean changed = FALSE;
 959         gint i;
 960
 961         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 962                 {
 963                 if (osd->icon_time[i] > 1)
 964                         {
 965                         osd->icon_time[i]--;
 966                         if (osd->icon_time[i] < 2)
 967                                 {
 968                                 osd->icon_time[i] = 0;
 969                                 changed = TRUE;
 970                                 }
 971                         else
 972                                 {
 973                                 done = FALSE;
 974                                 }
 975                         }
 976                 }
 977
 978         if (changed) image_osd_update_schedule(osd, FALSE);
 979
 980         if (done)
 981                 {
 982                 osd->timer_id = 0;
 983                 return FALSE;
 984                 }
 985
 986         return TRUE;
 987 }
 988
 989 static void image_osd_timer_schedule(OverlayStateData *osd)
 990 {
 991         if (!osd->timer_id)
 992                 {
 993                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 994                 }
 995 }
 996
 997 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 998 {
 999         OverlayStateData *osd = data;
1000
1001         osd->changed_states |= state;
1002         image_osd_update_schedule(osd, FALSE);
1003 }
1004
1005 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
1006 {
1007         OverlayStateData *osd = data;
1008
1009         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
1010                 {
1011                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
1012                 osd->notify |= type;
1013                 image_osd_update_schedule(osd, FALSE);
1014                 }
1015 }
1016
1017
1018 static void image_osd_free(OverlayStateData *osd)
1019 {
1020         if (!osd) return;
1021
1022         if (osd->idle_id) g_source_remove(osd->idle_id);
1023         if (osd->timer_id) g_source_remove(osd->timer_id);
1024
1025         file_data_unregister_notify_func(image_osd_notify_cb, osd);
1026
1027         if (osd->imd)
1028                 {
1029                 image_set_osd_data(osd->imd, NULL);
1030                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
1031
1032                 image_set_state_func(osd->imd, NULL, NULL);
1033
1034                 image_osd_info_hide(osd);
1035                 image_osd_icons_hide(osd);
1036                 }
1037
1038         if (osd->histogram) histogram_free(osd->histogram);
1039
1040         g_free(osd);
1041 }
1042
1043 #if 0
1044 static void image_osd_remove(ImageWindow *imd)
1045 {
1046         OverlayStateData *osd = image_get_osd_data(imd);
1047
1048         if (osd) image_osd_free(osd);
1049 }
1050 #endif
1051
1052 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
1053 {
1054         OverlayStateData *osd = data;
1055
1056         osd->imd = NULL;
1057         image_osd_free(osd);
1058 }
1059
1060 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
1061 {
1062         OverlayStateData *osd = image_get_osd_data(imd);
1063
1064         if (!osd)
1065                 {
1066                 osd = g_new0(OverlayStateData, 1);
1067                 osd->imd = imd;
1068                 osd->show = OSD_SHOW_NOTHING;
1069                 osd->x = options->image_overlay.x;
1070                 osd->y = options->image_overlay.y;
1071
1072                 osd->histogram = histogram_new();
1073
1074                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
1075                                                    G_CALLBACK(image_osd_destroy_cb), osd);
1076                 image_set_osd_data(imd, osd);
1077
1078                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
1079                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
1080                 }
1081
1082         if (show & OSD_SHOW_STATUS)
1083                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
1084
1085         if (show != osd->show)
1086                 image_osd_update_schedule(osd, TRUE);
1087
1088         osd->show = show;
1089 }
1090
1091 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
1092 {
1093         if (!imd) return;
1094
1095         image_osd_enable(imd, show);
1096 }
1097
1098 OsdShowFlags image_osd_get(ImageWindow *imd)
1099 {
1100         OverlayStateData *osd = image_get_osd_data(imd);
1101
1102         return osd ? osd->show : OSD_SHOW_NOTHING;
1103 }
1104
1105 Histogram *image_osd_get_histogram(ImageWindow *imd)
1106 {
1107         OverlayStateData *osd = image_get_osd_data(imd);
1108
1109         return osd ? osd->histogram : NULL;
1110 }
1111
1112 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
1113 {
1114         Histogram *h_src, *h_dest;
1115         image_osd_set(dest, image_osd_get(src));
1116
1117         h_src = image_osd_get_histogram(src);
1118         h_dest = image_osd_get_histogram(dest);
1119
1120         h_dest->histogram_mode = h_src->histogram_mode;
1121         h_dest->histogram_channel = h_src->histogram_channel;
1122
1123 }
1124
1125 /* duration:
1126     0 = hide
1127     1 = show
1128    2+ = show for duration tenths of a second
1129    -1 = use default duration
1130  */
1131 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1132 {
1133         OverlayStateData *osd = image_get_osd_data(imd);
1134
1135         if (!osd) return;
1136
1137         if (flag >= IMAGE_OSD_COUNT) return;
1138         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1139         if (duration > 1) duration += 1;
1140
1141         osd->icon_time[flag] = duration;
1142
1143         image_osd_update_schedule(osd, FALSE);
1144         image_osd_timer_schedule(osd);
1145 }
1146 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */