src/image-overlay.c

   1 /*
   2  * Geeqie
   3  * (C) 2006 John Ellis
   4  * Copyright (C) 2008 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 "bar_info.h"
  17 #include "collect.h"
  18 #include "exif.h"
  19 #include "filedata.h"
  20 #include "histogram.h"
  21 #include "image.h"
  22 #include "img-view.h"
  23 #include "layout.h"
  24 #include "pixbuf-renderer.h"
  25 #include "pixbuf_util.h"
  26 #include "ui_fileops.h"
  27
  28 /*
  29  *----------------------------------------------------------------------------
  30  * image overlay
  31  *----------------------------------------------------------------------------
  32  */
  33
  34
  35 typedef struct _OverlayStateData OverlayStateData;
  36 struct _OverlayStateData {
  37         ImageWindow *imd;
  38         ImageState changed_states;
  39
  40         Histogram *histogram;
  41
  42         OsdShowFlags show;
  43
  44         gint ovl_info;
  45
  46         gint icon_time[IMAGE_OSD_COUNT];
  47         gint icon_id[IMAGE_OSD_COUNT];
  48
  49         gint idle_id;
  50         gint timer_id;
  51         gulong destroy_id;
  52 };
  53
  54
  55 typedef struct _OSDIcon OSDIcon;
  56 struct _OSDIcon {
  57         gint reset;     /* reset on new image */
  58         gint x;         /* x, y offset */
  59         gint y;
  60         gchar *key;     /* inline pixbuf */
  61 };
  62
  63 static OSDIcon osd_icons[] = {
  64         {  TRUE,   0,   0, NULL },                      /* none */
  65         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  66         {  TRUE, -10, -10, NULL },                      /* user rotated */
  67         {  TRUE, -40, -10, NULL },                      /* color embedded */
  68         {  TRUE, -70, -10, NULL },                      /* first image */
  69         {  TRUE, -70, -10, NULL },                      /* last image */
  70         { FALSE, -70, -10, NULL },                      /* osd enabled */
  71         { FALSE, 0, 0, NULL }
  72 };
  73
  74 #define OSD_DATA "overlay-data"
  75
  76 #define OSD_INFO_X 10
  77 #define OSD_INFO_Y -10
  78
  79 #define IMAGE_OSD_DEFAULT_DURATION 30
  80
  81 #define HISTOGRAM_HEIGHT 140
  82 #define HISTOGRAM_WIDTH  256
  83
  84 static void image_osd_timer_schedule(OverlayStateData *osd);
  85
  86 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  87 {
  88         g_assert(template_string);
  89
  90         g_free(*template_string);
  91         *template_string = g_strdup(value);
  92 }
  93
  94
  95 void set_default_image_overlay_template_string(gchar **template_string)
  96 {
  97         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
  98 }
  99
 100 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 101 {
 102         OverlayStateData *osd;
 103
 104         if (!imd) return NULL;
 105
 106         g_assert(imd->pr);
 107
 108         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 109         return osd;
 110 }
 111
 112 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 113 {
 114         g_assert(imd);
 115         g_assert(imd->pr);
 116         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 117 }
 118
 119 /*
 120  *----------------------------------------------------------------------------
 121  * image histogram
 122  *----------------------------------------------------------------------------
 123  */
 124
 125
 126 void image_osd_histogram_chan_toggle(ImageWindow *imd)
 127 {
 128         OverlayStateData *osd = image_get_osd_data(imd);
 129
 130         if (!osd || !osd->histogram) return;
 131
 132         histogram_set_channel(osd->histogram, (histogram_get_channel(osd->histogram) +1)%HCHAN_COUNT);
 133         image_osd_update(imd);
 134 }
 135
 136 void image_osd_histogram_log_toggle(ImageWindow *imd)
 137 {
 138         OverlayStateData *osd = image_get_osd_data(imd);
 139
 140         if (!osd || !osd->histogram) return;
 141
 142         histogram_set_mode(osd->histogram, !histogram_get_mode(osd->histogram));
 143         image_osd_update(imd);
 144 }
 145
 146 void image_osd_toggle(ImageWindow *imd)
 147 {
 148         OverlayStateData *osd;
 149
 150         if (!imd) return;
 151
 152         osd = image_get_osd_data(imd);
 153         if (!osd)
 154                 {
 155                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 156                 return;
 157                 }
 158
 159         if (osd->show != OSD_SHOW_NOTHING)
 160                 {
 161                 if (osd->show & OSD_SHOW_HISTOGRAM)
 162                         {
 163                         image_osd_set(imd, OSD_SHOW_NOTHING);
 164                         }
 165                 else
 166                         {
 167                         image_osd_set(imd, osd->show | OSD_SHOW_HISTOGRAM);
 168                         }
 169                 }
 170 }
 171
 172 static gchar *keywords_to_string(FileData *fd)
 173 {
 174         GList *keywords;
 175         GString *kwstr = NULL;
 176         gchar *ret = NULL;
 177
 178         g_assert(fd);
 179
 180         if (comment_read(fd, &keywords, NULL))
 181                 {
 182                 GList *work = keywords;
 183
 184                 while (work)
 185                         {
 186                         gchar *kw = work->data;
 187                         work = work->next;
 188
 189                         if (!kw) continue;
 190                         if (!kwstr)
 191                                 kwstr = g_string_new("");
 192                         else
 193                                 g_string_append(kwstr, ", ");
 194
 195                         g_string_append(kwstr, kw);
 196                         }
 197                 }
 198
 199         if (kwstr)
 200                 {
 201                 ret = kwstr->str;
 202                 g_string_free(kwstr, FALSE);
 203                 }
 204
 205         return ret;
 206 }
 207
 208 static gchar *image_osd_mkinfo(const gchar *str, ImageWindow *imd, GHashTable *vars)
 209 {
 210         gchar delim = '%', imp = '|', sep[] = " - ";
 211         gchar *start, *end;
 212         guint pos, prev;
 213         guint last;
 214         gchar *name, *data;
 215         GString *new;
 216         gchar *ret;
 217         ExifData *exif;
 218
 219         if (!str || !*str) return g_strdup("");
 220
 221         new = g_string_new(str);
 222
 223         exif = exif_read_fd(imd->image_fd);
 224         prev = 0;
 225         last = FALSE;
 226
 227         while (TRUE)
 228                 {
 229                 guint limit = 0;
 230                 gchar *trunc = NULL;
 231                 gchar *limpos = NULL;
 232                 gchar *extra = NULL;
 233                 gchar *extrapos = NULL;
 234                 gchar *p;
 235
 236                 start = strchr(new->str, delim);
 237                 if (!start)
 238                         break;
 239                 end = strchr(start+1, delim);
 240                 if (!end)
 241                         break;
 242
 243                 /* Search for optionnal modifiers
 244                  * %name:99:extra% -> name = "name", limit=99, extra = "extra"
 245                  */
 246                 for (p = start + 1; p < end; p++)
 247                         {
 248                         if (p[0] == ':')
 249                                 {
 250                                 if (g_ascii_isdigit(p[1]) && !limpos)
 251                                         {
 252                                         limpos = p + 1;
 253                                         if (!trunc) trunc = p;
 254                                         }
 255                                 else
 256                                         {
 257                                         extrapos = p + 1;
 258                                         if (!trunc) trunc = p;
 259                                         break;
 260                                         }
 261                                 }
 262                         }
 263
 264                 if (limpos)
 265                         limit = (guint) atoi(limpos);
 266
 267                 if (extrapos)
 268                         extra = g_strndup(extrapos, end - extrapos);
 269
 270                 name = g_strndup(start+1, (trunc ? trunc : end)-start-1);
 271                 pos = start - new->str;
 272                 data = NULL;
 273
 274                 if (strcmp(name, "keywords") == 0)
 275                         {
 276                         data = keywords_to_string(imd->image_fd);
 277                         }
 278                 else if (strcmp(name, "comment") == 0)
 279                         {
 280                         comment_read(imd->image_fd, NULL, &data);
 281                         }
 282                 else
 283                         {
 284                         data = g_strdup(g_hash_table_lookup(vars, name));
 285                         if (data && strcmp(name, "zoom") == 0) imd->overlay_show_zoom = TRUE;
 286                         if (!data && exif)
 287                                 data = exif_get_data_as_text(exif, name);
 288                         }
 289                 if (data && *data && limit > 0 && strlen(data) > limit + 3)
 290                         {
 291                         gchar *new_data = g_strdup_printf("%-*.*s...", limit, limit, data);
 292                         g_free(data);
 293                         data = new_data;
 294                         }
 295
 296                 if (data)
 297                         {
 298                         /* Since we use pango markup to display, we need to escape here */
 299                         gchar *escaped = g_markup_escape_text(data, -1);
 300                         g_free(data);
 301                         data = escaped;
 302                         }
 303
 304                 if (extra)
 305                         {
 306                         if (data && *data)
 307                                 {
 308                                 /* Display data between left and right parts of extra string
 309                                  * the data is expressed by a '*' character. A '*' may be escaped
 310                                  * by a \. You should escape all '*' characters, do not rely on the
 311                                  * current implementation which only replaces the first unescaped '*'.
 312                                  * If no "*" is present, the extra string is just appended to data string.
 313                                  * Pango mark up is accepted in left and right parts.
 314                                  * Any \n is replaced by a newline
 315                                  * Examples:
 316                                  * "<i>*</i>\n" -> data is displayed in italics ended with a newline
 317                                  * "\n"         -> ended with newline
 318                                  * "ISO *"      -> prefix data with "ISO " (ie. "ISO 100")
 319                                  * "\**\*"      -> prefix data with a star, and append a star (ie. "*100*")
 320                                  * "\\*"        -> prefix data with an anti slash (ie "\100")
 321                                  * "Collection <b>*</b>\n" -> display data in bold prefixed by "Collection " and a newline is appended
 322                                  *
 323                                  * FIXME: using background / foreground colors lead to weird results.
 324                                  */
 325                                 gchar *new_data;
 326                                 gchar *left = NULL;
 327                                 gchar *right = extra;
 328                                 gchar *p;
 329                                 guint len = strlen(extra);
 330
 331                                 /* Search for left and right parts and unescape characters */
 332                                 for (p = extra; *p; p++, len--)
 333                                         if (p[0] == '\\')
 334                                                 {
 335                                                 if (p[1] == 'n')
 336                                                         {
 337                                                         memmove(p+1, p+2, --len);
 338                                                         p[0] = '\n';
 339                                                         }
 340                                                 else if (p[1] != '\0')
 341                                                         memmove(p, p+1, len--); // includes \0
 342                                                 }
 343                                         else if (p[0] == '*' && !left)
 344                                                 {
 345                                                 right = p + 1;
 346                                                 left = extra;
 347                                                 }
 348
 349                                 if (left) right[-1] = '\0';
 350
 351                                 new_data = g_strdup_printf("%s%s%s", left ? left : "", data, right);
 352                                 g_free(data);
 353                                 data = new_data;
 354                                 }
 355                         g_free(extra);
 356                         }
 357
 358                 g_string_erase(new, pos, end-start+1);
 359                 if (data)
 360                         g_string_insert(new, pos, data);
 361
 362                 if (pos-prev >= 2 && new->str[pos-1] == imp)
 363                         {
 364                         g_string_erase(new, --pos, 1);
 365                         if (last && data && *data)
 366                                 {
 367                                 g_string_insert(new, pos, sep);
 368                                 pos += strlen(sep);
 369                                 }
 370                         }
 371
 372                 prev = data ? pos+strlen(data)-1 : pos-1;
 373                 last = data ? TRUE : last;
 374                 g_free(name);
 375                 g_free(data);
 376                 }
 377
 378         exif_free(exif);
 379         /* search and destroy empty lines */
 380         end = new->str;
 381         while ((start = strchr(end, '\n')))
 382                 {
 383                 end = start;
 384                 while (*++(end) == '\n')
 385                         ;
 386                 g_string_erase(new, start-new->str, end-start-1);
 387                 }
 388
 389         g_strchomp(new->str);
 390
 391         ret = new->str;
 392         g_string_free(new, FALSE);
 393
 394         return ret;
 395 }
 396
 397 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 398 {
 399         GdkPixbuf *pixbuf = NULL;
 400         gint width, height;
 401         PangoLayout *layout;
 402         const gchar *name;
 403         gchar *name_escaped;
 404         gchar *text;
 405         gchar *size;
 406         gint n, t;
 407         CollectionData *cd;
 408         CollectInfo *info;
 409         GdkPixbuf *imgpixbuf = NULL;
 410         LayoutWindow *lw = NULL;
 411         gint with_hist = 0;
 412         gchar *ct;
 413         gint w, h;
 414         GHashTable *vars;
 415         ImageWindow *imd = osd->imd;
 416         FileData *fd = image_get_fd(imd);
 417
 418         if (!fd) return NULL;
 419
 420         vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 421
 422         name = image_get_name(imd);
 423         if (name)
 424                 {
 425                 name_escaped = g_markup_escape_text(name, -1);
 426                 }
 427         else
 428                 {
 429                 name_escaped = NULL;
 430                 }
 431
 432         cd = image_get_collection(imd, &info);
 433         if (cd)
 434                 {
 435                 gchar *collection_name;
 436
 437                 t = g_list_length(cd->list);
 438                 n = g_list_index(cd->list, info) + 1;
 439                 if (cd->name)
 440                         {
 441                         if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 442                                 collection_name = remove_extension_from_path(cd->name);
 443                         else
 444                                 collection_name = g_strdup(cd->name);
 445                         }
 446                 else
 447                         {
 448                         collection_name = g_strdup(_("Untitled"));
 449                         }
 450
 451                 ct = g_markup_escape_text(collection_name, -1);
 452                 g_free(collection_name);
 453                 }
 454         else
 455                 {
 456                 lw = layout_find_by_image(imd);
 457                 if (lw)
 458                         {
 459                         if (lw->slideshow)
 460                                 {
 461                                 n = g_list_length(lw->slideshow->list_done);
 462                                 t = n + g_list_length(lw->slideshow->list);
 463                                 if (n == 0) n = t;
 464                                 }
 465                         else
 466                                 {
 467                                 t = layout_list_count(lw, NULL);
 468                                 n = layout_list_get_index(lw, image_get_path(lw->image)) + 1;
 469                                 }
 470                         }
 471                 else if (view_window_find_image(imd, &n, &t))
 472                         {
 473                         n++;
 474                         }
 475                 else
 476                         {
 477                         t = 1;
 478                         n = 1;
 479                         }
 480
 481                 if (n < 1) n = 1;
 482                 if (t < 1) t = 1;
 483
 484                 ct = g_strdup("");
 485                 }
 486
 487         size = text_from_size_abrev(imd->size);
 488         if (!imd->unknown)
 489                 {
 490                 if (imd->delay_flip &&
 491                     imd->il && imd->il->pixbuf &&
 492                     image_get_pixbuf(imd) != imd->il->pixbuf)
 493                         {
 494                         w = gdk_pixbuf_get_width(imd->il->pixbuf);
 495                         h = gdk_pixbuf_get_height(imd->il->pixbuf);
 496                         imgpixbuf = imd->il->pixbuf;
 497                         }
 498                 else
 499                         {
 500                         image_get_image_size(imd, &w, &h);
 501                         imgpixbuf = (PIXBUF_RENDERER(imd->pr))->pixbuf;
 502                         }
 503
 504                 if (imgpixbuf && (osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram
 505                               && (!imd->il || imd->il->done))
 506                         with_hist=1;
 507
 508                 g_hash_table_insert(vars, "width", g_strdup_printf("%d", w));
 509                 g_hash_table_insert(vars, "height", g_strdup_printf("%d", h));
 510                 g_hash_table_insert(vars, "res", g_strdup_printf("%d × %d", w, h));
 511                 }
 512
 513         g_hash_table_insert(vars, "collection", g_strdup(ct));
 514         g_hash_table_insert(vars, "number", g_strdup_printf("%d", n));
 515         g_hash_table_insert(vars, "total", g_strdup_printf("%d", t));
 516         g_hash_table_insert(vars, "name", g_strdup(name_escaped));
 517         g_hash_table_insert(vars, "date", g_strdup(text_from_time(imd->mtime)));
 518         g_hash_table_insert(vars, "size", g_strdup(size));
 519         g_hash_table_insert(vars, "zoom", image_zoom_get_as_text(imd));
 520
 521         if (!name_escaped)
 522                 {
 523                 text = g_strdup_printf(_("Untitled"));
 524                 }
 525         else
 526                 {
 527                 text = image_osd_mkinfo(options->image_overlay.common.template_string, imd, vars);
 528                 }
 529
 530         g_free(size);
 531         g_free(ct);
 532         g_free(name_escaped);
 533         g_hash_table_destroy(vars);
 534
 535         {
 536                 gint active_marks = 0;
 537                 gint mark;
 538                 gchar *text2;
 539
 540                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 541                         {
 542                         active_marks += fd->marks[mark];
 543                         }
 544
 545                 if (active_marks > 0)
 546                         {
 547                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 548
 549                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 550                                 {
 551                                 g_string_append_printf(buf, fd->marks[mark] ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + mark);
 552                                 }
 553
 554                         if (*text)
 555                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 556                         else
 557                                 text2 = g_strdup(buf->str);
 558                         g_string_free(buf, TRUE);
 559                         g_free(text);
 560                         text = text2;
 561                         }
 562
 563                 if (with_hist)
 564                         {
 565                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 566                         if (*text)
 567                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 568                         else
 569                                 text2 = g_strdup(escaped_histogram_label);
 570                         g_free(escaped_histogram_label);
 571                         g_free(text);
 572                         text = text2;
 573                         }
 574         }
 575
 576         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 577         pango_layout_set_markup(layout, text, -1);
 578         g_free(text);
 579
 580         pango_layout_get_pixel_size(layout, &width, &height);
 581         /* with empty text width is set to 0, but not height) */
 582         if (width == 0)
 583                 height = 0;
 584         else if (height == 0)
 585                 width = 0;
 586         if (width > 0) width += 10;
 587         if (height > 0) height += 10;
 588
 589         if (with_hist)
 590                 {
 591                 histogram_read(osd->histogram, imgpixbuf);
 592                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 593                 height += HISTOGRAM_HEIGHT + 5;
 594                 }
 595
 596         if (width > 0 && height > 0)
 597                 {
 598                 /* TODO: make osd color configurable --Zas */
 599                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 600                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, 240, 240, 240, 210);
 601                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 602                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 603                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 604                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 605                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 606                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 607                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 608
 609                 if (with_hist)
 610                         {
 611                         gint x = 5;
 612                         gint y = height - HISTOGRAM_HEIGHT - 5;
 613                         gint w = width - 10;
 614                         float xoffset = 0;
 615                         gint subdiv = 5;
 616                         gint c = 160;
 617                         gint alpha = 250;
 618                         gint i;
 619                         float add = w / (float)subdiv;
 620
 621                         for (i = 0; i < subdiv; i++)
 622                                 {
 623                                 gint d = (i > 0 ? 0 : 1);
 624
 625                                 pixbuf_set_rect(pixbuf, x + xoffset + 0.5, y, add + d + 0.5, HISTOGRAM_HEIGHT, c, c, c, alpha, d, 1, 1, 1);
 626                                 xoffset += add+d;
 627                                 }
 628
 629                         histogram_draw(osd->histogram, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 630                         }
 631                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, 0, 0, 0, 255);
 632         }
 633
 634         g_object_unref(G_OBJECT(layout));
 635
 636         return pixbuf;
 637 }
 638
 639 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 640 {
 641         static GdkPixbuf **icons = NULL;
 642         GdkPixbuf *icon = NULL;
 643
 644         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 645         if (icons[flag]) return icons[flag];
 646
 647         if (osd_icons[flag].key)
 648                 {
 649                 icon = pixbuf_inline(osd_icons[flag].key);
 650                 }
 651
 652         if (!icon)
 653                 {
 654                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 655                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 656                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 657                 switch (flag)
 658                         {
 659                         case IMAGE_OSD_ROTATE_AUTO:
 660                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 661                                                 0, 0, 0, 255,
 662                                                 3, 0, 3, 0);
 663                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 664                                                      20, 9, 14, 15, 14, 3,
 665                                                      0, 0, 0, 255);
 666                                 break;
 667                         case IMAGE_OSD_ROTATE_USER:
 668                                 break;
 669                         case IMAGE_OSD_COLOR:
 670                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 671                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 672                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 673                                 break;
 674                         case IMAGE_OSD_FIRST:
 675                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 676                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 677                                                      12, 5, 18, 11, 6, 11,
 678                                                      0, 0, 0, 255);
 679                                 break;
 680                         case IMAGE_OSD_LAST:
 681                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 682                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 683                                                      12, 18, 6, 12, 18, 12,
 684                                                      0, 0, 0, 255);
 685                                 break;
 686                         case IMAGE_OSD_ICON:
 687                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 688                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 689                                 break;
 690                         default:
 691                                 break;
 692                         }
 693                 }
 694
 695         icons[flag] = icon;
 696
 697         return icon;
 698 }
 699
 700 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 701 {
 702         GdkPixbuf *pixbuf;
 703
 704         if (osd->icon_id[flag]) return;
 705
 706         pixbuf = image_osd_icon_pixbuf(flag);
 707         if (!pixbuf) return;
 708
 709         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 710                                                osd_icons[flag].x, osd_icons[flag].y,
 711                                                TRUE, FALSE);
 712 }
 713
 714 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 715 {
 716         if (osd->icon_id[flag])
 717                 {
 718                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 719                 osd->icon_id[flag] = 0;
 720                 }
 721 }
 722
 723 static gint image_osd_update_cb(gpointer data)
 724 {
 725         OverlayStateData *osd = data;
 726
 727         osd->imd->overlay_show_zoom = FALSE;
 728
 729         if (osd->show & OSD_SHOW_INFO)
 730                 {
 731                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 732                         {
 733                         GdkPixbuf *pixbuf;
 734
 735                         pixbuf = image_osd_info_render(osd);
 736                         if (pixbuf)
 737                                 {
 738                                 if (osd->ovl_info == 0)
 739                                         {
 740                                         osd->ovl_info = image_overlay_add(osd->imd, pixbuf,
 741                                                                           OSD_INFO_X, OSD_INFO_Y, TRUE, FALSE);
 742                                         }
 743                                 else
 744                                         {
 745                                         image_overlay_set(osd->imd, osd->ovl_info, pixbuf, OSD_INFO_X, OSD_INFO_Y);
 746                                         }
 747                                 g_object_unref(pixbuf);
 748                                 }
 749                         else if (osd->ovl_info)
 750                                 {
 751                                 image_overlay_remove(osd->imd, osd->ovl_info);
 752                                 osd->ovl_info = 0;
 753                                 }
 754                         }
 755                 }
 756         else
 757                 {
 758                 if (osd->ovl_info)
 759                         {
 760                         image_overlay_remove(osd->imd, osd->ovl_info);
 761                         osd->ovl_info = 0;
 762                         }
 763                 }
 764
 765         if (osd->show & OSD_SHOW_STATUS)
 766                 {
 767                 gint i;
 768
 769                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 770                         {
 771                         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 772                                 {
 773                                 if (osd_icons[i].reset) osd->icon_time[i] = 0;
 774                                 }
 775                         }
 776
 777                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 778                         {
 779                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 780                         image_osd_timer_schedule(osd);
 781                         }
 782
 783                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 784                         {
 785                         gint n = 0;
 786
 787                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 788                                 {
 789                                 n = 1;
 790                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 791                                 }
 792
 793                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 794                         image_osd_timer_schedule(osd);
 795                         }
 796
 797                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 798                         {
 799                         if (osd->icon_time[i] > 0)
 800                                 {
 801                                 image_osd_icon_show(osd, i);
 802                                 }
 803                         else
 804                                 {
 805                                 image_osd_icon_hide(osd, i);
 806                                 }
 807                         }
 808                 }
 809         else
 810                 {
 811                 gint i;
 812
 813                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 814                         {
 815                         image_osd_icon_hide(osd, i);
 816                         }
 817                 }
 818
 819         if (osd->imd->il && osd->imd->il->done)
 820                 osd->changed_states = IMAGE_STATE_NONE;
 821         osd->idle_id = -1;
 822         return FALSE;
 823 }
 824
 825 static void image_osd_update_schedule(OverlayStateData *osd, gint force)
 826 {
 827         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 828
 829         if (osd->idle_id == -1)
 830                 {
 831                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 832                 }
 833 }
 834
 835 void image_osd_update(ImageWindow *imd)
 836 {
 837         OverlayStateData *osd = image_get_osd_data(imd);
 838
 839         if (!osd) return;
 840
 841         image_osd_update_schedule(osd, TRUE);
 842 }
 843
 844 static gint image_osd_timer_cb(gpointer data)
 845 {
 846         OverlayStateData *osd = data;
 847         gint done = TRUE;
 848         gint changed = FALSE;
 849         gint i;
 850
 851         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 852                 {
 853                 if (osd->icon_time[i] > 1)
 854                         {
 855                         osd->icon_time[i]--;
 856                         if (osd->icon_time[i] < 2)
 857                                 {
 858                                 osd->icon_time[i] = 0;
 859                                 changed = TRUE;
 860                                 }
 861                         else
 862                                 {
 863                                 done = FALSE;
 864                                 }
 865                         }
 866                 }
 867
 868         if (changed) image_osd_update_schedule(osd, FALSE);
 869
 870         if (done)
 871                 {
 872                 osd->timer_id = -1;
 873                 return FALSE;
 874                 }
 875
 876         return TRUE;
 877 }
 878
 879 static void image_osd_timer_schedule(OverlayStateData *osd)
 880 {
 881         if (osd->timer_id == -1)
 882                 {
 883                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 884                 }
 885 }
 886
 887 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 888 {
 889         OverlayStateData *osd = data;
 890
 891         osd->changed_states |= state;
 892         image_osd_update_schedule(osd, FALSE);
 893 }
 894
 895 static void image_osd_free(OverlayStateData *osd)
 896 {
 897         if (!osd) return;
 898
 899         if (osd->idle_id != -1) g_source_remove(osd->idle_id);
 900         if (osd->timer_id != -1) g_source_remove(osd->timer_id);
 901
 902         if (osd->imd)
 903                 {
 904                 gint i;
 905
 906                 image_set_osd_data(osd->imd, NULL);
 907                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 908
 909                 image_set_state_func(osd->imd, NULL, NULL);
 910                 image_overlay_remove(osd->imd, osd->ovl_info);
 911
 912                 for (i = 0; i < IMAGE_OSD_COUNT; i++)
 913                         {
 914                         image_osd_icon_hide(osd, i);
 915                         }
 916                 }
 917
 918         if (osd->histogram) histogram_free(osd->histogram);
 919
 920         g_free(osd);
 921 }
 922
 923 static void image_osd_remove(ImageWindow *imd)
 924 {
 925         OverlayStateData *osd = image_get_osd_data(imd);
 926
 927         if (osd) image_osd_free(osd);
 928 }
 929
 930 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 931 {
 932         OverlayStateData *osd = data;
 933
 934         osd->imd = NULL;
 935         image_osd_free(osd);
 936 }
 937
 938 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 939 {
 940         OverlayStateData *osd = image_get_osd_data(imd);
 941
 942         if (!osd)
 943                 {
 944                 osd = g_new0(OverlayStateData, 1);
 945                 osd->imd = imd;
 946                 osd->idle_id = -1;
 947                 osd->timer_id = -1;
 948                 osd->show = OSD_SHOW_NOTHING;
 949                 osd->histogram = NULL;
 950
 951                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 952                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 953                 image_set_osd_data(imd, osd);
 954
 955                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 956                 }
 957
 958         if (show & OSD_SHOW_HISTOGRAM)
 959                 osd->histogram = histogram_new();
 960         else if (osd->histogram)
 961                 {
 962                 histogram_free(osd->histogram);
 963                 osd->histogram = NULL;
 964                 }
 965
 966         if (show & OSD_SHOW_STATUS)
 967                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 968
 969         if (show != osd->show)
 970                 image_osd_update_schedule(osd, TRUE);
 971
 972         osd->show = show;
 973 }
 974
 975 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 976 {
 977         if (!imd) return;
 978
 979         if (show == OSD_SHOW_NOTHING)
 980                 {
 981                 image_osd_remove(imd);
 982                 return;
 983                 }
 984
 985         image_osd_enable(imd, show);
 986 }
 987
 988 OsdShowFlags image_osd_get(ImageWindow *imd)
 989 {
 990         OverlayStateData *osd = image_get_osd_data(imd);
 991
 992         return osd ? osd->show : OSD_SHOW_NOTHING;
 993 }
 994
 995 /* duration:
 996     0 = hide
 997     1 = show
 998    2+ = show for duration tenths of a second
 999    -1 = use default duration
1000  */
1001 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
1002 {
1003         OverlayStateData *osd = image_get_osd_data(imd);
1004
1005         if (!osd) return;
1006
1007         if (flag < IMAGE_OSD_NONE || flag >= IMAGE_OSD_COUNT) return;
1008         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
1009         if (duration > 1) duration += 1;
1010
1011         osd->icon_time[flag] = duration;
1012
1013         image_osd_update_schedule(osd, FALSE);
1014         image_osd_timer_schedule(osd);
1015 }