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