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 "collect.h"
  26 #include "filedata.h"
  27 #include "histogram.h"
  28 #include "image.h"
  29 #include "image-load.h"
  30 #include "img-view.h"
  31 #include "layout.h"
  32 #include "osd.h"
  33 #include "pixbuf-renderer.h"
  34 #include "pixbuf-util.h"
  35 #include "slideshow.h"
  36 #include "ui-fileops.h"
  37
  38 /*
  39  *----------------------------------------------------------------------------
  40  * image overlay
  41  *----------------------------------------------------------------------------
  42  */
  43
  44
  45 struct OverlayStateData {
  46         ImageWindow *imd;
  47         ImageState changed_states;
  48         NotifyType notify;
  49
  50         Histogram *histogram;
  51
  52         OsdShowFlags show;
  53         OverlayRendererFlags origin;
  54
  55         gint ovl_info;
  56
  57         gint x;
  58         gint y;
  59
  60         gint icon_time[IMAGE_OSD_COUNT];
  61         gint icon_id[IMAGE_OSD_COUNT];
  62
  63         guint idle_id; /* event source id */
  64         guint timer_id; /* event source id */
  65         gulong destroy_id;
  66 };
  67
  68
  69 struct OSDIcon {
  70         gboolean reset; /* reset on new image */
  71         gint x;         /* x, y offset */
  72         gint y;
  73         gchar *key;     /* inline pixbuf */
  74 };
  75
  76 static OSDIcon osd_icons[] = {
  77         {  TRUE,   0,   0, nullptr },                   /* none */
  78         {  TRUE, -10, -10, nullptr },                   /* auto rotated */
  79         {  TRUE, -10, -10, nullptr },                   /* user rotated */
  80         {  TRUE, -40, -10, nullptr },                   /* color embedded */
  81         {  TRUE, -70, -10, nullptr },                   /* first image */
  82         {  TRUE, -70, -10, nullptr },                   /* last image */
  83         { FALSE, -70, -10, nullptr },                   /* osd enabled */
  84         { FALSE, 0, 0, nullptr }
  85 };
  86
  87 #define OSD_DATA "overlay-data"
  88
  89 #define IMAGE_OSD_DEFAULT_DURATION 30
  90
  91 #define HISTOGRAM_HEIGHT 140
  92 #define HISTOGRAM_WIDTH  256
  93
  94 static void image_osd_timer_schedule(OverlayStateData *osd);
  95
  96 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  97 {
  98         g_assert(template_string);
  99
 100         g_free(*template_string);
 101         *template_string = g_strdup(value);
 102 }
 103
 104
 105 void set_default_image_overlay_template_string(gchar **template_string)
 106 {
 107         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 108 }
 109
 110 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 111 {
 112         g_assert(font_string);
 113
 114         g_free(*font_string);
 115         *font_string = g_strdup(value);
 116 }
 117
 118 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 119 {
 120         OverlayStateData *osd;
 121
 122         if (!imd) return nullptr;
 123
 124         g_assert(imd->pr);
 125
 126         osd = static_cast<OverlayStateData *>(g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA"));
 127         return osd;
 128 }
 129
 130 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 131 {
 132         g_assert(imd);
 133         g_assert(imd->pr);
 134         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 135 }
 136
 137 /*
 138  *----------------------------------------------------------------------------
 139  * image histogram
 140  *----------------------------------------------------------------------------
 141  */
 142
 143
 144 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 145 {
 146         OverlayStateData *osd = image_get_osd_data(imd);
 147
 148         if (!osd || !osd->histogram) return;
 149
 150         histogram_toggle_channel(osd->histogram);
 151         image_osd_update(imd);
 152 }
 153
 154 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 155 {
 156         OverlayStateData *osd = image_get_osd_data(imd);
 157
 158         if (!osd || !osd->histogram) return;
 159
 160         histogram_toggle_mode(osd->histogram);
 161         image_osd_update(imd);
 162 }
 163
 164 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 165 {
 166         OverlayStateData *osd = image_get_osd_data(imd);
 167
 168         if (!osd || !osd->histogram) return;
 169
 170         histogram_set_channel(osd->histogram, chan);
 171         image_osd_update(imd);
 172 }
 173
 174 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 175 {
 176         OverlayStateData *osd = image_get_osd_data(imd);
 177
 178         if (!osd || !osd->histogram) return;
 179
 180         histogram_set_mode(osd->histogram, mode);
 181         image_osd_update(imd);
 182 }
 183
 184 gint image_osd_histogram_get_channel(ImageWindow *imd)
 185 {
 186         OverlayStateData *osd = image_get_osd_data(imd);
 187
 188         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 189
 190         return histogram_get_channel(osd->histogram);
 191 }
 192
 193 gint image_osd_histogram_get_mode(ImageWindow *imd)
 194 {
 195         OverlayStateData *osd = image_get_osd_data(imd);
 196
 197         if (!osd || !osd->histogram) return 0;
 198
 199         return histogram_get_mode(osd->histogram);
 200 }
 201
 202 void image_osd_toggle(ImageWindow *imd)
 203 {
 204         OsdShowFlags show;
 205         if (!imd) return;
 206
 207         show = image_osd_get(imd);
 208         if (show == OSD_SHOW_NOTHING)
 209                 {
 210                 image_osd_set(imd, static_cast<OsdShowFlags>(OSD_SHOW_INFO | OSD_SHOW_STATUS));
 211                 return;
 212                 }
 213         else
 214                 {
 215                 if (show & OSD_SHOW_HISTOGRAM)
 216                         {
 217                         image_osd_set(imd, OSD_SHOW_NOTHING);
 218                         }
 219                 else
 220                         {
 221                         image_osd_set(imd, static_cast<OsdShowFlags>(show | OSD_SHOW_HISTOGRAM));
 222                         }
 223                 }
 224 }
 225
 226 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 227 {
 228         GdkPixbuf *pixbuf = nullptr;
 229         gint width, height;
 230         PangoLayout *layout;
 231         const gchar *name;
 232         gchar *text;
 233         gboolean with_hist;
 234         const HistMap *histmap = nullptr;
 235         ImageWindow *imd = osd->imd;
 236         FileData *fd = image_get_fd(imd);
 237         PangoFontDescription *font_desc;
 238
 239         if (!fd) return nullptr;
 240
 241         name = image_get_name(imd);
 242         if (name)
 243                 {
 244                 gint n, t;
 245                 CollectionData *cd;
 246                 CollectInfo *info;
 247                 GHashTable *vars;
 248
 249                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, nullptr, g_free);
 250
 251                 cd = image_get_collection(imd, &info);
 252                 if (cd)
 253                         {
 254                         t = g_list_length(cd->list);
 255                         n = g_list_index(cd->list, info) + 1;
 256                         if (cd->name)
 257                                 {
 258                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 259                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 260                                 else
 261                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 262                                 }
 263                         else
 264                                 {
 265                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 266                                 }
 267                         }
 268                 else
 269                         {
 270                         LayoutWindow *lw = layout_find_by_image(imd);
 271                         if (lw)
 272                                 {
 273                                 if (lw->slideshow)
 274                                         {
 275                                         n = g_list_length(lw->slideshow->list_done);
 276                                         t = n + g_list_length(lw->slideshow->list);
 277                                         if (n == 0) n = t;
 278                                         }
 279                                 else
 280                                         {
 281                                         t = layout_list_count(lw, nullptr);
 282                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 283                                         }
 284                                 }
 285                         else if (view_window_find_image(imd, &n, &t))
 286                                 {
 287                                 n++;
 288                                 }
 289                         else
 290                                 {
 291                                 t = 1;
 292                                 n = 1;
 293                                 }
 294
 295                         if (n < 1) n = 1;
 296                         if (t < 1) t = 1;
 297
 298                         osd_template_insert(vars, "collection", nullptr, OSDT_NONE);
 299                         }
 300
 301                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 302                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 303                 osd_template_insert(vars, "name", const_cast<gchar *>(name), OSDT_NONE);
 304                 osd_template_insert(vars, "path", const_cast<gchar *>(image_get_path(imd)), OSDT_NONE);
 305                 osd_template_insert(vars, "date", imd->image_fd ? (const_cast<gchar *>(text_from_time(imd->image_fd->date))) : "", OSDT_NONE);
 306                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 307                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 308
 309                 if (!imd->unknown)
 310                         {
 311                         gint w, h;
 312                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 313
 314                         if (imd->delay_flip &&
 315                             imd->il && load_pixbuf &&
 316                             image_get_pixbuf(imd) != load_pixbuf)
 317                                 {
 318                                 w = gdk_pixbuf_get_width(load_pixbuf);
 319                                 h = gdk_pixbuf_get_height(load_pixbuf);
 320                                 }
 321                         else
 322                                 {
 323                                 image_get_image_size(imd, &w, &h);
 324                                 }
 325
 326
 327                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 328                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 329                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 330                         }
 331                 else
 332                         {
 333                         osd_template_insert(vars, "width", nullptr, OSDT_NONE);
 334                         osd_template_insert(vars, "height", nullptr, OSDT_NONE);
 335                         osd_template_insert(vars, "res", nullptr, OSDT_NONE);
 336                         }
 337
 338                 text = image_osd_mkinfo(options->image_overlay.template_string, imd->image_fd, vars);
 339                 g_hash_table_destroy(vars);
 340
 341         } else {
 342                 /* When does this occur ?? */
 343                 text = g_markup_escape_text(_("Untitled"), -1);
 344         }
 345
 346         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 347         if (with_hist)
 348                 {
 349                 histmap = histmap_get(imd->image_fd);
 350                 if (!histmap)
 351                         {
 352                         histmap_start_idle(imd->image_fd);
 353                         with_hist = FALSE;
 354                         }
 355                 }
 356
 357
 358         {
 359                 gint active_marks = 0;
 360                 gint mark;
 361                 gchar *text2;
 362
 363                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 364                         {
 365                         active_marks += file_data_get_mark(fd, mark);
 366                         }
 367
 368                 if (active_marks > 0)
 369                         {
 370                         GString *buf = g_string_sized_new(strlen(text) + 1 + FILEDATA_MARKS_SIZE * 2);
 371
 372                         if (*text)
 373                                 {
 374                                 g_string_append_printf(buf, "%s\n", text);
 375                                 }
 376
 377                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 378                                 {
 379                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 380                                 }
 381
 382                         g_free(text);
 383                         text = g_string_free(buf, FALSE);
 384                         }
 385
 386                 if (with_hist)
 387                         {
 388                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 389                         if (*text)
 390                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 391                         else
 392                                 text2 = g_strdup(escaped_histogram_label);
 393                         g_free(escaped_histogram_label);
 394                         g_free(text);
 395                         text = text2;
 396                         }
 397         }
 398
 399         font_desc = pango_font_description_from_string(options->image_overlay.font);
 400         layout = gtk_widget_create_pango_layout(imd->pr, nullptr);
 401         pango_layout_set_font_description(layout, font_desc);
 402
 403         pango_layout_set_markup(layout, text, -1);
 404         g_free(text);
 405
 406         pango_layout_get_pixel_size(layout, &width, &height);
 407         /* with empty text width is set to 0, but not height) */
 408         if (width == 0)
 409                 height = 0;
 410         else if (height == 0)
 411                 width = 0;
 412         if (width > 0) width += 10;
 413         if (height > 0) height += 10;
 414
 415         if (with_hist)
 416                 {
 417                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 418                 height += HISTOGRAM_HEIGHT + 5;
 419                 }
 420
 421         if (width > 0 && height > 0)
 422                 {
 423                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 424                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 425                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 426                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 427                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 428                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 429                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 430                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 431                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 432                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 433
 434                 if (with_hist)
 435                         {
 436                         gint x = 5;
 437                         gint y = height - HISTOGRAM_HEIGHT - 5;
 438                         gint w = width - 10;
 439
 440                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 441                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 442                         }
 443                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 444                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 445         }
 446
 447         g_object_unref(G_OBJECT(layout));
 448
 449         return pixbuf;
 450 }
 451
 452 /**
 453  * @brief Create non-standard icons for the OSD
 454  * @param flag
 455  * @returns
 456  *
 457  * IMAGE_OSD_COLOR
 458  * \image html image-osd-color.png
 459  * IMAGE_OSD_FIRST
 460  * \image html image-osd-first.png
 461  * IMAGE_OSD_ICON
 462  * \image html image-osd-icon.png
 463  * IMAGE_OSD_LAST
 464  * \image html image-osd-last.png
 465  * IMAGE_OSD_ROTATE_AUTO
 466  * \image html image-osd-rotate-auto.png
 467  *
 468  */
 469 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 470 {
 471         static GdkPixbuf **icons = nullptr;
 472         GdkPixbuf *icon = nullptr;
 473
 474         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 475         if (icons[flag]) return icons[flag];
 476
 477         if (osd_icons[flag].key)
 478                 {
 479                 icon = pixbuf_inline(osd_icons[flag].key);
 480                 }
 481
 482         if (!icon)
 483                 {
 484                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 485                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 486                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 487                 switch (flag)
 488                         {
 489                         case IMAGE_OSD_ROTATE_AUTO:
 490                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 491                                                 0, 0, 0, 255,
 492                                                 3, 0, 3, 0);
 493                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 494                                                      20, 9, 14, 15, 14, 3,
 495                                                      0, 0, 0, 255);
 496                                 break;
 497                         case IMAGE_OSD_ROTATE_USER:
 498                                 break;
 499                         case IMAGE_OSD_COLOR:
 500                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 501                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 502                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 503                                 break;
 504                         case IMAGE_OSD_FIRST:
 505                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 506                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 507                                                      12, 5, 18, 11, 6, 11,
 508                                                      0, 0, 0, 255);
 509                                 break;
 510                         case IMAGE_OSD_LAST:
 511                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 512                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 513                                                      12, 18, 6, 12, 18, 12,
 514                                                      0, 0, 0, 255);
 515                                 break;
 516                         case IMAGE_OSD_ICON:
 517                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 518                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 519                                 break;
 520                         default:
 521                                 break;
 522                         }
 523                 }
 524
 525         icons[flag] = icon;
 526
 527         return icon;
 528 }
 529
 530 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 531                               OverlayRendererFlags flags)
 532 {
 533         return pixbuf_renderer_overlay_add(reinterpret_cast<PixbufRenderer *>(imd->pr), pixbuf, x, y, flags);
 534 }
 535
 536 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 537 {
 538         pixbuf_renderer_overlay_set(reinterpret_cast<PixbufRenderer *>(imd->pr), id, pixbuf, x, y);
 539 }
 540
 541 static void image_overlay_remove(ImageWindow *imd, gint id)
 542 {
 543         pixbuf_renderer_overlay_remove(reinterpret_cast<PixbufRenderer *>(imd->pr), id);
 544 }
 545
 546 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 547 {
 548         GdkPixbuf *pixbuf;
 549
 550         if (osd->icon_id[flag]) return;
 551
 552         pixbuf = image_osd_icon_pixbuf(flag);
 553         if (!pixbuf) return;
 554
 555         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 556                                                osd_icons[flag].x, osd_icons[flag].y,
 557                                                OVL_RELATIVE);
 558 }
 559
 560 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 561 {
 562         if (osd->icon_id[flag])
 563                 {
 564                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 565                 osd->icon_id[flag] = 0;
 566                 }
 567 }
 568
 569 static void image_osd_icons_reset_time(OverlayStateData *osd)
 570 {
 571         gint i;
 572
 573         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 574                 {
 575                 if (osd_icons[i].reset)
 576                         {
 577                         osd->icon_time[i] = 0;
 578                         }
 579                 }
 580 }
 581
 582 static void image_osd_icons_update(OverlayStateData *osd)
 583 {
 584         gint i;
 585
 586         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 587                 {
 588                 if (osd->icon_time[i] > 0)
 589                         {
 590                         image_osd_icon_show(osd, static_cast<ImageOSDFlag>(i));
 591                         }
 592                 else
 593                         {
 594                         image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 595                         }
 596                 }
 597 }
 598
 599 static void image_osd_icons_hide(OverlayStateData *osd)
 600 {
 601         gint i;
 602
 603         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 604                 {
 605                 image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 606                 }
 607 }
 608
 609 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 610 {
 611         if (osd->ovl_info == 0)
 612                 {
 613                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 614                 }
 615         else
 616                 {
 617                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 618                 }
 619 }
 620
 621 static void image_osd_info_hide(OverlayStateData *osd)
 622 {
 623         if (osd->ovl_info == 0) return;
 624
 625         image_overlay_remove(osd->imd, osd->ovl_info);
 626         osd->ovl_info = 0;
 627 }
 628
 629 static gboolean image_osd_update_cb(gpointer data)
 630 {
 631         auto osd = static_cast<OverlayStateData *>(data);
 632
 633         if (osd->show & OSD_SHOW_INFO)
 634                 {
 635                 /* redraw when the image was changed,
 636                    with histogram we have to redraw also when loading is finished */
 637                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 638                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 639                     osd->notify & NOTIFY_HISTMAP)
 640                         {
 641                         GdkPixbuf *pixbuf;
 642
 643                         pixbuf = image_osd_info_render(osd);
 644                         if (pixbuf)
 645                                 {
 646                                 image_osd_info_show(osd, pixbuf);
 647                                 g_object_unref(pixbuf);
 648                                 }
 649                         else
 650                                 {
 651                                 image_osd_info_hide(osd);
 652                                 }
 653                         }
 654                 }
 655         else
 656                 {
 657                 image_osd_info_hide(osd);
 658                 }
 659
 660         if (osd->show & OSD_SHOW_STATUS)
 661                 {
 662                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 663                         image_osd_icons_reset_time(osd);
 664
 665                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 666                         {
 667                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 668                         image_osd_timer_schedule(osd);
 669                         }
 670
 671                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 672                         {
 673                         gint n = 0;
 674
 675                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 676                                 {
 677                                 n = 1;
 678                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 679                                 }
 680
 681                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 682                         image_osd_timer_schedule(osd);
 683                         }
 684
 685                 image_osd_icons_update(osd);
 686                 }
 687         else
 688                 {
 689                 image_osd_icons_hide(osd);
 690                 }
 691
 692         osd->changed_states = IMAGE_STATE_NONE;
 693         osd->notify = static_cast<NotifyType>(0);
 694         osd->idle_id = 0;
 695         return G_SOURCE_REMOVE;
 696 }
 697
 698 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 699 {
 700         if (force) osd->changed_states = static_cast<ImageState>(osd->changed_states | IMAGE_STATE_IMAGE);
 701
 702         if (!osd->idle_id)
 703                 {
 704                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, nullptr);
 705                 }
 706 }
 707
 708 void image_osd_update(ImageWindow *imd)
 709 {
 710         OverlayStateData *osd = image_get_osd_data(imd);
 711
 712         if (!osd) return;
 713
 714         image_osd_update_schedule(osd, TRUE);
 715 }
 716
 717 static gboolean image_osd_timer_cb(gpointer data)
 718 {
 719         auto osd = static_cast<OverlayStateData *>(data);
 720         gboolean done = TRUE;
 721         gboolean changed = FALSE;
 722         gint i;
 723
 724         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 725                 {
 726                 if (osd->icon_time[i] > 1)
 727                         {
 728                         osd->icon_time[i]--;
 729                         if (osd->icon_time[i] < 2)
 730                                 {
 731                                 osd->icon_time[i] = 0;
 732                                 changed = TRUE;
 733                                 }
 734                         else
 735                                 {
 736                                 done = FALSE;
 737                                 }
 738                         }
 739                 }
 740
 741         if (changed) image_osd_update_schedule(osd, FALSE);
 742
 743         if (done)
 744                 {
 745                 osd->timer_id = 0;
 746                 return FALSE;
 747                 }
 748
 749         return TRUE;
 750 }
 751
 752 static void image_osd_timer_schedule(OverlayStateData *osd)
 753 {
 754         if (!osd->timer_id)
 755                 {
 756                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 757                 }
 758 }
 759
 760 static void image_osd_state_cb(ImageWindow *, ImageState state, gpointer data)
 761 {
 762         auto osd = static_cast<OverlayStateData *>(data);
 763
 764         osd->changed_states = static_cast<ImageState>(osd->changed_states | state);
 765         image_osd_update_schedule(osd, FALSE);
 766 }
 767
 768 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 769 {
 770         auto osd = static_cast<OverlayStateData *>(data);
 771
 772         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 773                 {
 774                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 775                 osd->notify = static_cast<NotifyType>(osd->notify | type);
 776                 image_osd_update_schedule(osd, FALSE);
 777                 }
 778 }
 779
 780
 781 static void image_osd_free(OverlayStateData *osd)
 782 {
 783         if (!osd) return;
 784
 785         if (osd->idle_id) g_source_remove(osd->idle_id);
 786         if (osd->timer_id) g_source_remove(osd->timer_id);
 787
 788         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 789
 790         if (osd->imd)
 791                 {
 792                 image_set_osd_data(osd->imd, nullptr);
 793                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 794
 795                 image_set_state_func(osd->imd, nullptr, nullptr);
 796
 797                 image_osd_info_hide(osd);
 798                 image_osd_icons_hide(osd);
 799                 }
 800
 801         if (osd->histogram) histogram_free(osd->histogram);
 802
 803         g_free(osd);
 804 }
 805
 806 static void image_osd_destroy_cb(GtkWidget *, gpointer data)
 807 {
 808         auto osd = static_cast<OverlayStateData *>(data);
 809
 810         osd->imd = nullptr;
 811         image_osd_free(osd);
 812 }
 813
 814 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 815 {
 816         OverlayStateData *osd = image_get_osd_data(imd);
 817
 818         if (!osd)
 819                 {
 820                 osd = g_new0(OverlayStateData, 1);
 821                 osd->imd = imd;
 822                 osd->show = OSD_SHOW_NOTHING;
 823                 osd->x = options->image_overlay.x;
 824                 osd->y = options->image_overlay.y;
 825                 osd->origin = OVL_RELATIVE;
 826
 827                 osd->histogram = histogram_new();
 828
 829                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 830                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 831                 image_set_osd_data(imd, osd);
 832
 833                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 834                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 835                 }
 836
 837         if (show & OSD_SHOW_STATUS)
 838                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 839
 840         if (show != osd->show)
 841                 image_osd_update_schedule(osd, TRUE);
 842
 843         osd->show = show;
 844 }
 845
 846 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 847 {
 848         if (!imd) return;
 849
 850         image_osd_enable(imd, show);
 851 }
 852
 853 OsdShowFlags image_osd_get(ImageWindow *imd)
 854 {
 855         OverlayStateData *osd = image_get_osd_data(imd);
 856
 857         return osd ? osd->show : OSD_SHOW_NOTHING;
 858 }
 859
 860 Histogram *image_osd_get_histogram(ImageWindow *imd)
 861 {
 862         OverlayStateData *osd = image_get_osd_data(imd);
 863
 864         return osd ? osd->histogram : nullptr;
 865 }
 866
 867 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 868 {
 869         Histogram *h_src, *h_dest;
 870         image_osd_set(dest, image_osd_get(src));
 871
 872         h_src = image_osd_get_histogram(src);
 873         h_dest = image_osd_get_histogram(dest);
 874
 875         h_dest->histogram_mode = h_src->histogram_mode;
 876         h_dest->histogram_channel = h_src->histogram_channel;
 877
 878 }
 879
 880 /* duration:
 881     0 = hide
 882     1 = show
 883    2+ = show for duration tenths of a second
 884    -1 = use default duration
 885  */
 886 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 887 {
 888         OverlayStateData *osd = image_get_osd_data(imd);
 889
 890         if (!osd) return;
 891
 892         if (flag >= IMAGE_OSD_COUNT) return;
 893         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 894         if (duration > 1) duration += 1;
 895
 896         osd->icon_time[flag] = duration;
 897
 898         image_osd_update_schedule(osd, FALSE);
 899         image_osd_timer_schedule(osd);
 900 }
 901 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */