src/image-overlay.cc

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "main.h"
  23 #include "image-overlay.h"
  24
  25 #include "filedata.h"
  26 #include "histogram.h"
  27 #include "image.h"
  28 #include "img-view.h"
  29 #include "layout.h"
  30 #include "osd.h"
  31 #include "pixbuf-renderer.h"
  32 #include "pixbuf-util.h"
  33 #include "ui-fileops.h"
  34 #include "image-load.h"
  35
  36 /*
  37  *----------------------------------------------------------------------------
  38  * image overlay
  39  *----------------------------------------------------------------------------
  40  */
  41
  42
  43 struct OverlayStateData {
  44         ImageWindow *imd;
  45         ImageState changed_states;
  46         NotifyType notify;
  47
  48         Histogram *histogram;
  49
  50         OsdShowFlags show;
  51         OverlayRendererFlags origin;
  52
  53         gint ovl_info;
  54
  55         gint x;
  56         gint y;
  57
  58         gint icon_time[IMAGE_OSD_COUNT];
  59         gint icon_id[IMAGE_OSD_COUNT];
  60
  61         guint idle_id; /* event source id */
  62         guint timer_id; /* event source id */
  63         gulong destroy_id;
  64 };
  65
  66
  67 struct OSDIcon {
  68         gboolean reset; /* reset on new image */
  69         gint x;         /* x, y offset */
  70         gint y;
  71         gchar *key;     /* inline pixbuf */
  72 };
  73
  74 static OSDIcon osd_icons[] = {
  75         {  TRUE,   0,   0, nullptr },                   /* none */
  76         {  TRUE, -10, -10, nullptr },                   /* auto rotated */
  77         {  TRUE, -10, -10, nullptr },                   /* user rotated */
  78         {  TRUE, -40, -10, nullptr },                   /* color embedded */
  79         {  TRUE, -70, -10, nullptr },                   /* first image */
  80         {  TRUE, -70, -10, nullptr },                   /* last image */
  81         { FALSE, -70, -10, nullptr },                   /* osd enabled */
  82         { FALSE, 0, 0, nullptr }
  83 };
  84
  85 #define OSD_DATA "overlay-data"
  86
  87 #define IMAGE_OSD_DEFAULT_DURATION 30
  88
  89 #define HISTOGRAM_HEIGHT 140
  90 #define HISTOGRAM_WIDTH  256
  91
  92 static void image_osd_timer_schedule(OverlayStateData *osd);
  93
  94 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  95 {
  96         g_assert(template_string);
  97
  98         g_free(*template_string);
  99         *template_string = g_strdup(value);
 100 }
 101
 102
 103 void set_default_image_overlay_template_string(gchar **template_string)
 104 {
 105         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 106 }
 107
 108 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 109 {
 110         g_assert(font_string);
 111
 112         g_free(*font_string);
 113         *font_string = g_strdup(value);
 114 }
 115
 116 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 117 {
 118         OverlayStateData *osd;
 119
 120         if (!imd) return nullptr;
 121
 122         g_assert(imd->pr);
 123
 124         osd = static_cast<OverlayStateData *>(g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA"));
 125         return osd;
 126 }
 127
 128 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 129 {
 130         g_assert(imd);
 131         g_assert(imd->pr);
 132         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 133 }
 134
 135 /*
 136  *----------------------------------------------------------------------------
 137  * image histogram
 138  *----------------------------------------------------------------------------
 139  */
 140
 141
 142 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 143 {
 144         OverlayStateData *osd = image_get_osd_data(imd);
 145
 146         if (!osd || !osd->histogram) return;
 147
 148         histogram_toggle_channel(osd->histogram);
 149         image_osd_update(imd);
 150 }
 151
 152 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 153 {
 154         OverlayStateData *osd = image_get_osd_data(imd);
 155
 156         if (!osd || !osd->histogram) return;
 157
 158         histogram_toggle_mode(osd->histogram);
 159         image_osd_update(imd);
 160 }
 161
 162 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 163 {
 164         OverlayStateData *osd = image_get_osd_data(imd);
 165
 166         if (!osd || !osd->histogram) return;
 167
 168         histogram_set_channel(osd->histogram, chan);
 169         image_osd_update(imd);
 170 }
 171
 172 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 173 {
 174         OverlayStateData *osd = image_get_osd_data(imd);
 175
 176         if (!osd || !osd->histogram) return;
 177
 178         histogram_set_mode(osd->histogram, mode);
 179         image_osd_update(imd);
 180 }
 181
 182 gint image_osd_histogram_get_channel(ImageWindow *imd)
 183 {
 184         OverlayStateData *osd = image_get_osd_data(imd);
 185
 186         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 187
 188         return histogram_get_channel(osd->histogram);
 189 }
 190
 191 gint image_osd_histogram_get_mode(ImageWindow *imd)
 192 {
 193         OverlayStateData *osd = image_get_osd_data(imd);
 194
 195         if (!osd || !osd->histogram) return 0;
 196
 197         return histogram_get_mode(osd->histogram);
 198 }
 199
 200 void image_osd_toggle(ImageWindow *imd)
 201 {
 202         OsdShowFlags show;
 203         if (!imd) return;
 204
 205         show = image_osd_get(imd);
 206         if (show == OSD_SHOW_NOTHING)
 207                 {
 208                 image_osd_set(imd, static_cast<OsdShowFlags>(OSD_SHOW_INFO | OSD_SHOW_STATUS));
 209                 return;
 210                 }
 211         else
 212                 {
 213                 if (show & OSD_SHOW_HISTOGRAM)
 214                         {
 215                         image_osd_set(imd, OSD_SHOW_NOTHING);
 216                         }
 217                 else
 218                         {
 219                         image_osd_set(imd, static_cast<OsdShowFlags>(show | OSD_SHOW_HISTOGRAM));
 220                         }
 221                 }
 222 }
 223
 224 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 225 {
 226         GdkPixbuf *pixbuf = nullptr;
 227         gint width, height;
 228         PangoLayout *layout;
 229         const gchar *name;
 230         gchar *text;
 231         gboolean with_hist;
 232         const HistMap *histmap = nullptr;
 233         ImageWindow *imd = osd->imd;
 234         FileData *fd = image_get_fd(imd);
 235         PangoFontDescription *font_desc;
 236
 237         if (!fd) return nullptr;
 238
 239         name = image_get_name(imd);
 240         if (name)
 241                 {
 242                 gint n, t;
 243                 CollectionData *cd;
 244                 CollectInfo *info;
 245                 GHashTable *vars;
 246
 247                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, nullptr, g_free);
 248
 249                 cd = image_get_collection(imd, &info);
 250                 if (cd)
 251                         {
 252                         t = g_list_length(cd->list);
 253                         n = g_list_index(cd->list, info) + 1;
 254                         if (cd->name)
 255                                 {
 256                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 257                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 258                                 else
 259                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 260                                 }
 261                         else
 262                                 {
 263                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 264                                 }
 265                         }
 266                 else
 267                         {
 268                         LayoutWindow *lw = layout_find_by_image(imd);
 269                         if (lw)
 270                                 {
 271                                 if (lw->slideshow)
 272                                         {
 273                                         n = g_list_length(lw->slideshow->list_done);
 274                                         t = n + g_list_length(lw->slideshow->list);
 275                                         if (n == 0) n = t;
 276                                         }
 277                                 else
 278                                         {
 279                                         t = layout_list_count(lw, nullptr);
 280                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 281                                         }
 282                                 }
 283                         else if (view_window_find_image(imd, &n, &t))
 284                                 {
 285                                 n++;
 286                                 }
 287                         else
 288                                 {
 289                                 t = 1;
 290                                 n = 1;
 291                                 }
 292
 293                         if (n < 1) n = 1;
 294                         if (t < 1) t = 1;
 295
 296                         osd_template_insert(vars, "collection", nullptr, OSDT_NONE);
 297                         }
 298
 299                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 300                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 301                 osd_template_insert(vars, "name", const_cast<gchar *>(name), OSDT_NONE);
 302                 osd_template_insert(vars, "path", const_cast<gchar *>(image_get_path(imd)), OSDT_NONE);
 303                 osd_template_insert(vars, "date", imd->image_fd ? (const_cast<gchar *>(text_from_time(imd->image_fd->date))) : "", OSDT_NONE);
 304                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 305                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 306
 307                 if (!imd->unknown)
 308                         {
 309                         gint w, h;
 310                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 311
 312                         if (imd->delay_flip &&
 313                             imd->il && load_pixbuf &&
 314                             image_get_pixbuf(imd) != load_pixbuf)
 315                                 {
 316                                 w = gdk_pixbuf_get_width(load_pixbuf);
 317                                 h = gdk_pixbuf_get_height(load_pixbuf);
 318                                 }
 319                         else
 320                                 {
 321                                 image_get_image_size(imd, &w, &h);
 322                                 }
 323
 324
 325                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 326                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 327                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 328                         }
 329                 else
 330                         {
 331                         osd_template_insert(vars, "width", nullptr, OSDT_NONE);
 332                         osd_template_insert(vars, "height", nullptr, OSDT_NONE);
 333                         osd_template_insert(vars, "res", nullptr, OSDT_NONE);
 334                         }
 335
 336                 text = image_osd_mkinfo(options->image_overlay.template_string, imd->image_fd, vars);
 337                 g_hash_table_destroy(vars);
 338
 339         } else {
 340                 /* When does this occur ?? */
 341                 text = g_markup_escape_text(_("Untitled"), -1);
 342         }
 343
 344         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 345         if (with_hist)
 346                 {
 347                 histmap = histmap_get(imd->image_fd);
 348                 if (!histmap)
 349                         {
 350                         histmap_start_idle(imd->image_fd);
 351                         with_hist = FALSE;
 352                         }
 353                 }
 354
 355
 356         {
 357                 gint active_marks = 0;
 358                 gint mark;
 359                 gchar *text2;
 360
 361                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 362                         {
 363                         active_marks += file_data_get_mark(fd, mark);
 364                         }
 365
 366                 if (active_marks > 0)
 367                         {
 368                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 369
 370                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 371                                 {
 372                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 373                                 }
 374
 375                         if (*text)
 376                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 377                         else
 378                                 text2 = g_strdup(buf->str);
 379                         g_string_free(buf, TRUE);
 380                         g_free(text);
 381                         text = text2;
 382                         }
 383
 384                 if (with_hist)
 385                         {
 386                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 387                         if (*text)
 388                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 389                         else
 390                                 text2 = g_strdup(escaped_histogram_label);
 391                         g_free(escaped_histogram_label);
 392                         g_free(text);
 393                         text = text2;
 394                         }
 395         }
 396
 397         font_desc = pango_font_description_from_string(options->image_overlay.font);
 398         layout = gtk_widget_create_pango_layout(imd->pr, nullptr);
 399         pango_layout_set_font_description(layout, font_desc);
 400
 401         pango_layout_set_markup(layout, text, -1);
 402         g_free(text);
 403
 404         pango_layout_get_pixel_size(layout, &width, &height);
 405         /* with empty text width is set to 0, but not height) */
 406         if (width == 0)
 407                 height = 0;
 408         else if (height == 0)
 409                 width = 0;
 410         if (width > 0) width += 10;
 411         if (height > 0) height += 10;
 412
 413         if (with_hist)
 414                 {
 415                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 416                 height += HISTOGRAM_HEIGHT + 5;
 417                 }
 418
 419         if (width > 0 && height > 0)
 420                 {
 421                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 422                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 423                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 424                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 425                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 426                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 427                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 428                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 429                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 430                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 431
 432                 if (with_hist)
 433                         {
 434                         gint x = 5;
 435                         gint y = height - HISTOGRAM_HEIGHT - 5;
 436                         gint w = width - 10;
 437
 438                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 439                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 440                         }
 441                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 442                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 443         }
 444
 445         g_object_unref(G_OBJECT(layout));
 446
 447         return pixbuf;
 448 }
 449
 450 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 451 {
 452         static GdkPixbuf **icons = nullptr;
 453         GdkPixbuf *icon = nullptr;
 454
 455         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 456         if (icons[flag]) return icons[flag];
 457
 458         if (osd_icons[flag].key)
 459                 {
 460                 icon = pixbuf_inline(osd_icons[flag].key);
 461                 }
 462
 463         if (!icon)
 464                 {
 465                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 466                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 467                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 468                 switch (flag)
 469                         {
 470                         case IMAGE_OSD_ROTATE_AUTO:
 471                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 472                                                 0, 0, 0, 255,
 473                                                 3, 0, 3, 0);
 474                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 475                                                      20, 9, 14, 15, 14, 3,
 476                                                      0, 0, 0, 255);
 477                                 break;
 478                         case IMAGE_OSD_ROTATE_USER:
 479                                 break;
 480                         case IMAGE_OSD_COLOR:
 481                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 482                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 483                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 484                                 break;
 485                         case IMAGE_OSD_FIRST:
 486                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 487                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 488                                                      12, 5, 18, 11, 6, 11,
 489                                                      0, 0, 0, 255);
 490                                 break;
 491                         case IMAGE_OSD_LAST:
 492                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 493                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 494                                                      12, 18, 6, 12, 18, 12,
 495                                                      0, 0, 0, 255);
 496                                 break;
 497                         case IMAGE_OSD_ICON:
 498                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 499                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 500                                 break;
 501                         default:
 502                                 break;
 503                         }
 504                 }
 505
 506         icons[flag] = icon;
 507
 508         return icon;
 509 }
 510
 511 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 512                               OverlayRendererFlags flags)
 513 {
 514         return pixbuf_renderer_overlay_add(reinterpret_cast<PixbufRenderer *>(imd->pr), pixbuf, x, y, flags);
 515 }
 516
 517 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 518 {
 519         pixbuf_renderer_overlay_set(reinterpret_cast<PixbufRenderer *>(imd->pr), id, pixbuf, x, y);
 520 }
 521
 522 static void image_overlay_remove(ImageWindow *imd, gint id)
 523 {
 524         pixbuf_renderer_overlay_remove(reinterpret_cast<PixbufRenderer *>(imd->pr), id);
 525 }
 526
 527 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 528 {
 529         GdkPixbuf *pixbuf;
 530
 531         if (osd->icon_id[flag]) return;
 532
 533         pixbuf = image_osd_icon_pixbuf(flag);
 534         if (!pixbuf) return;
 535
 536         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 537                                                osd_icons[flag].x, osd_icons[flag].y,
 538                                                OVL_RELATIVE);
 539 }
 540
 541 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 542 {
 543         if (osd->icon_id[flag])
 544                 {
 545                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 546                 osd->icon_id[flag] = 0;
 547                 }
 548 }
 549
 550 static void image_osd_icons_reset_time(OverlayStateData *osd)
 551 {
 552         gint i;
 553
 554         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 555                 {
 556                 if (osd_icons[i].reset)
 557                         {
 558                         osd->icon_time[i] = 0;
 559                         }
 560                 }
 561 }
 562
 563 static void image_osd_icons_update(OverlayStateData *osd)
 564 {
 565         gint i;
 566
 567         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 568                 {
 569                 if (osd->icon_time[i] > 0)
 570                         {
 571                         image_osd_icon_show(osd, static_cast<ImageOSDFlag>(i));
 572                         }
 573                 else
 574                         {
 575                         image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 576                         }
 577                 }
 578 }
 579
 580 static void image_osd_icons_hide(OverlayStateData *osd)
 581 {
 582         gint i;
 583
 584         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 585                 {
 586                 image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 587                 }
 588 }
 589
 590 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 591 {
 592         if (osd->ovl_info == 0)
 593                 {
 594                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 595                 }
 596         else
 597                 {
 598                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 599                 }
 600 }
 601
 602 static void image_osd_info_hide(OverlayStateData *osd)
 603 {
 604         if (osd->ovl_info == 0) return;
 605
 606         image_overlay_remove(osd->imd, osd->ovl_info);
 607         osd->ovl_info = 0;
 608 }
 609
 610 static gboolean image_osd_update_cb(gpointer data)
 611 {
 612         auto osd = static_cast<OverlayStateData *>(data);
 613
 614         if (osd->show & OSD_SHOW_INFO)
 615                 {
 616                 /* redraw when the image was changed,
 617                    with histogram we have to redraw also when loading is finished */
 618                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 619                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 620                     osd->notify & NOTIFY_HISTMAP)
 621                         {
 622                         GdkPixbuf *pixbuf;
 623
 624                         pixbuf = image_osd_info_render(osd);
 625                         if (pixbuf)
 626                                 {
 627                                 image_osd_info_show(osd, pixbuf);
 628                                 g_object_unref(pixbuf);
 629                                 }
 630                         else
 631                                 {
 632                                 image_osd_info_hide(osd);
 633                                 }
 634                         }
 635                 }
 636         else
 637                 {
 638                 image_osd_info_hide(osd);
 639                 }
 640
 641         if (osd->show & OSD_SHOW_STATUS)
 642                 {
 643                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 644                         image_osd_icons_reset_time(osd);
 645
 646                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 647                         {
 648                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 649                         image_osd_timer_schedule(osd);
 650                         }
 651
 652                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 653                         {
 654                         gint n = 0;
 655
 656                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 657                                 {
 658                                 n = 1;
 659                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 660                                 }
 661
 662                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 663                         image_osd_timer_schedule(osd);
 664                         }
 665
 666                 image_osd_icons_update(osd);
 667                 }
 668         else
 669                 {
 670                 image_osd_icons_hide(osd);
 671                 }
 672
 673         osd->changed_states = IMAGE_STATE_NONE;
 674         osd->notify = static_cast<NotifyType>(0);
 675         osd->idle_id = 0;
 676         return G_SOURCE_REMOVE;
 677 }
 678
 679 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 680 {
 681         if (force) osd->changed_states = static_cast<ImageState>(osd->changed_states | IMAGE_STATE_IMAGE);
 682
 683         if (!osd->idle_id)
 684                 {
 685                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, nullptr);
 686                 }
 687 }
 688
 689 void image_osd_update(ImageWindow *imd)
 690 {
 691         OverlayStateData *osd = image_get_osd_data(imd);
 692
 693         if (!osd) return;
 694
 695         image_osd_update_schedule(osd, TRUE);
 696 }
 697
 698 static gboolean image_osd_timer_cb(gpointer data)
 699 {
 700         auto osd = static_cast<OverlayStateData *>(data);
 701         gboolean done = TRUE;
 702         gboolean changed = FALSE;
 703         gint i;
 704
 705         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 706                 {
 707                 if (osd->icon_time[i] > 1)
 708                         {
 709                         osd->icon_time[i]--;
 710                         if (osd->icon_time[i] < 2)
 711                                 {
 712                                 osd->icon_time[i] = 0;
 713                                 changed = TRUE;
 714                                 }
 715                         else
 716                                 {
 717                                 done = FALSE;
 718                                 }
 719                         }
 720                 }
 721
 722         if (changed) image_osd_update_schedule(osd, FALSE);
 723
 724         if (done)
 725                 {
 726                 osd->timer_id = 0;
 727                 return FALSE;
 728                 }
 729
 730         return TRUE;
 731 }
 732
 733 static void image_osd_timer_schedule(OverlayStateData *osd)
 734 {
 735         if (!osd->timer_id)
 736                 {
 737                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 738                 }
 739 }
 740
 741 static void image_osd_state_cb(ImageWindow *, ImageState state, gpointer data)
 742 {
 743         auto osd = static_cast<OverlayStateData *>(data);
 744
 745         osd->changed_states = static_cast<ImageState>(osd->changed_states | state);
 746         image_osd_update_schedule(osd, FALSE);
 747 }
 748
 749 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 750 {
 751         auto osd = static_cast<OverlayStateData *>(data);
 752
 753         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 754                 {
 755                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 756                 osd->notify = static_cast<NotifyType>(osd->notify | type);
 757                 image_osd_update_schedule(osd, FALSE);
 758                 }
 759 }
 760
 761
 762 static void image_osd_free(OverlayStateData *osd)
 763 {
 764         if (!osd) return;
 765
 766         if (osd->idle_id) g_source_remove(osd->idle_id);
 767         if (osd->timer_id) g_source_remove(osd->timer_id);
 768
 769         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 770
 771         if (osd->imd)
 772                 {
 773                 image_set_osd_data(osd->imd, nullptr);
 774                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 775
 776                 image_set_state_func(osd->imd, nullptr, nullptr);
 777
 778                 image_osd_info_hide(osd);
 779                 image_osd_icons_hide(osd);
 780                 }
 781
 782         if (osd->histogram) histogram_free(osd->histogram);
 783
 784         g_free(osd);
 785 }
 786
 787 static void image_osd_destroy_cb(GtkWidget *, gpointer data)
 788 {
 789         auto osd = static_cast<OverlayStateData *>(data);
 790
 791         osd->imd = nullptr;
 792         image_osd_free(osd);
 793 }
 794
 795 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 796 {
 797         OverlayStateData *osd = image_get_osd_data(imd);
 798
 799         if (!osd)
 800                 {
 801                 osd = g_new0(OverlayStateData, 1);
 802                 osd->imd = imd;
 803                 osd->show = OSD_SHOW_NOTHING;
 804                 osd->x = options->image_overlay.x;
 805                 osd->y = options->image_overlay.y;
 806                 osd->origin = OVL_RELATIVE;
 807
 808                 osd->histogram = histogram_new();
 809
 810                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 811                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 812                 image_set_osd_data(imd, osd);
 813
 814                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 815                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 816                 }
 817
 818         if (show & OSD_SHOW_STATUS)
 819                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 820
 821         if (show != osd->show)
 822                 image_osd_update_schedule(osd, TRUE);
 823
 824         osd->show = show;
 825 }
 826
 827 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 828 {
 829         if (!imd) return;
 830
 831         image_osd_enable(imd, show);
 832 }
 833
 834 OsdShowFlags image_osd_get(ImageWindow *imd)
 835 {
 836         OverlayStateData *osd = image_get_osd_data(imd);
 837
 838         return osd ? osd->show : OSD_SHOW_NOTHING;
 839 }
 840
 841 Histogram *image_osd_get_histogram(ImageWindow *imd)
 842 {
 843         OverlayStateData *osd = image_get_osd_data(imd);
 844
 845         return osd ? osd->histogram : nullptr;
 846 }
 847
 848 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 849 {
 850         Histogram *h_src, *h_dest;
 851         image_osd_set(dest, image_osd_get(src));
 852
 853         h_src = image_osd_get_histogram(src);
 854         h_dest = image_osd_get_histogram(dest);
 855
 856         h_dest->histogram_mode = h_src->histogram_mode;
 857         h_dest->histogram_channel = h_src->histogram_channel;
 858
 859 }
 860
 861 /* duration:
 862     0 = hide
 863     1 = show
 864    2+ = show for duration tenths of a second
 865    -1 = use default duration
 866  */
 867 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 868 {
 869         OverlayStateData *osd = image_get_osd_data(imd);
 870
 871         if (!osd) return;
 872
 873         if (flag >= IMAGE_OSD_COUNT) return;
 874         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 875         if (duration > 1) duration += 1;
 876
 877         osd->icon_time[flag] = duration;
 878
 879         image_osd_update_schedule(osd, FALSE);
 880         image_osd_timer_schedule(osd);
 881 }
 882 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */