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
 214         if (show & OSD_SHOW_HISTOGRAM)
 215                 {
 216                 image_osd_set(imd, OSD_SHOW_NOTHING);
 217                 }
 218         else
 219                 {
 220                 image_osd_set(imd, static_cast<OsdShowFlags>(show | OSD_SHOW_HISTOGRAM));
 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(strlen(text) + 1 + FILEDATA_MARKS_SIZE * 2);
 369
 370                         if (*text)
 371                                 {
 372                                 g_string_append_printf(buf, "%s\n", text);
 373                                 }
 374
 375                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 376                                 {
 377                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 378                                 }
 379
 380                         g_free(text);
 381                         text = g_string_free(buf, FALSE);
 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 /**
 451  * @brief Create non-standard icons for the OSD
 452  * @param flag
 453  * @returns
 454  *
 455  * IMAGE_OSD_COLOR
 456  * \image html image-osd-color.png
 457  * IMAGE_OSD_FIRST
 458  * \image html image-osd-first.png
 459  * IMAGE_OSD_ICON
 460  * \image html image-osd-icon.png
 461  * IMAGE_OSD_LAST
 462  * \image html image-osd-last.png
 463  * IMAGE_OSD_ROTATE_AUTO
 464  * \image html image-osd-rotate-auto.png
 465  *
 466  */
 467 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 468 {
 469         static GdkPixbuf **icons = nullptr;
 470         GdkPixbuf *icon = nullptr;
 471
 472         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 473         if (icons[flag]) return icons[flag];
 474
 475         if (osd_icons[flag].key)
 476                 {
 477                 icon = pixbuf_inline(osd_icons[flag].key);
 478                 }
 479
 480         if (!icon)
 481                 {
 482                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 483                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 484                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 485                 switch (flag)
 486                         {
 487                         case IMAGE_OSD_ROTATE_AUTO:
 488                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 489                                                 0, 0, 0, 255,
 490                                                 3, 0, 3, 0);
 491                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 492                                                      20, 9, 14, 15, 14, 3,
 493                                                      0, 0, 0, 255);
 494                                 break;
 495                         case IMAGE_OSD_ROTATE_USER:
 496                                 break;
 497                         case IMAGE_OSD_COLOR:
 498                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 499                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 500                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 501                                 break;
 502                         case IMAGE_OSD_FIRST:
 503                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 504                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 505                                                      12, 5, 18, 11, 6, 11,
 506                                                      0, 0, 0, 255);
 507                                 break;
 508                         case IMAGE_OSD_LAST:
 509                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 510                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 511                                                      12, 18, 6, 12, 18, 12,
 512                                                      0, 0, 0, 255);
 513                                 break;
 514                         case IMAGE_OSD_ICON:
 515                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 516                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 517                                 break;
 518                         default:
 519                                 break;
 520                         }
 521                 }
 522
 523         icons[flag] = icon;
 524
 525         return icon;
 526 }
 527
 528 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 529                               OverlayRendererFlags flags)
 530 {
 531         return pixbuf_renderer_overlay_add(reinterpret_cast<PixbufRenderer *>(imd->pr), pixbuf, x, y, flags);
 532 }
 533
 534 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 535 {
 536         pixbuf_renderer_overlay_set(reinterpret_cast<PixbufRenderer *>(imd->pr), id, pixbuf, x, y);
 537 }
 538
 539 static void image_overlay_remove(ImageWindow *imd, gint id)
 540 {
 541         pixbuf_renderer_overlay_remove(reinterpret_cast<PixbufRenderer *>(imd->pr), id);
 542 }
 543
 544 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 545 {
 546         GdkPixbuf *pixbuf;
 547
 548         if (osd->icon_id[flag]) return;
 549
 550         pixbuf = image_osd_icon_pixbuf(flag);
 551         if (!pixbuf) return;
 552
 553         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 554                                                osd_icons[flag].x, osd_icons[flag].y,
 555                                                OVL_RELATIVE);
 556 }
 557
 558 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 559 {
 560         if (osd->icon_id[flag])
 561                 {
 562                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 563                 osd->icon_id[flag] = 0;
 564                 }
 565 }
 566
 567 static void image_osd_icons_reset_time(OverlayStateData *osd)
 568 {
 569         gint i;
 570
 571         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 572                 {
 573                 if (osd_icons[i].reset)
 574                         {
 575                         osd->icon_time[i] = 0;
 576                         }
 577                 }
 578 }
 579
 580 static void image_osd_icons_update(OverlayStateData *osd)
 581 {
 582         gint i;
 583
 584         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 585                 {
 586                 if (osd->icon_time[i] > 0)
 587                         {
 588                         image_osd_icon_show(osd, static_cast<ImageOSDFlag>(i));
 589                         }
 590                 else
 591                         {
 592                         image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 593                         }
 594                 }
 595 }
 596
 597 static void image_osd_icons_hide(OverlayStateData *osd)
 598 {
 599         gint i;
 600
 601         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 602                 {
 603                 image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 604                 }
 605 }
 606
 607 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 608 {
 609         if (osd->ovl_info == 0)
 610                 {
 611                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 612                 }
 613         else
 614                 {
 615                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 616                 }
 617 }
 618
 619 static void image_osd_info_hide(OverlayStateData *osd)
 620 {
 621         if (osd->ovl_info == 0) return;
 622
 623         image_overlay_remove(osd->imd, osd->ovl_info);
 624         osd->ovl_info = 0;
 625 }
 626
 627 static gboolean image_osd_update_cb(gpointer data)
 628 {
 629         auto osd = static_cast<OverlayStateData *>(data);
 630
 631         if (osd->show & OSD_SHOW_INFO)
 632                 {
 633                 /* redraw when the image was changed,
 634                    with histogram we have to redraw also when loading is finished */
 635                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 636                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 637                     osd->notify & NOTIFY_HISTMAP)
 638                         {
 639                         GdkPixbuf *pixbuf;
 640
 641                         pixbuf = image_osd_info_render(osd);
 642                         if (pixbuf)
 643                                 {
 644                                 image_osd_info_show(osd, pixbuf);
 645                                 g_object_unref(pixbuf);
 646                                 }
 647                         else
 648                                 {
 649                                 image_osd_info_hide(osd);
 650                                 }
 651                         }
 652                 }
 653         else
 654                 {
 655                 image_osd_info_hide(osd);
 656                 }
 657
 658         if (osd->show & OSD_SHOW_STATUS)
 659                 {
 660                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 661                         image_osd_icons_reset_time(osd);
 662
 663                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 664                         {
 665                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 666                         image_osd_timer_schedule(osd);
 667                         }
 668
 669                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 670                         {
 671                         gint n = 0;
 672
 673                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 674                                 {
 675                                 n = 1;
 676                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 677                                 }
 678
 679                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 680                         image_osd_timer_schedule(osd);
 681                         }
 682
 683                 image_osd_icons_update(osd);
 684                 }
 685         else
 686                 {
 687                 image_osd_icons_hide(osd);
 688                 }
 689
 690         osd->changed_states = IMAGE_STATE_NONE;
 691         osd->notify = static_cast<NotifyType>(0);
 692         osd->idle_id = 0;
 693         return G_SOURCE_REMOVE;
 694 }
 695
 696 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 697 {
 698         if (force) osd->changed_states = static_cast<ImageState>(osd->changed_states | IMAGE_STATE_IMAGE);
 699
 700         if (!osd->idle_id)
 701                 {
 702                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, nullptr);
 703                 }
 704 }
 705
 706 void image_osd_update(ImageWindow *imd)
 707 {
 708         OverlayStateData *osd = image_get_osd_data(imd);
 709
 710         if (!osd) return;
 711
 712         image_osd_update_schedule(osd, TRUE);
 713 }
 714
 715 static gboolean image_osd_timer_cb(gpointer data)
 716 {
 717         auto osd = static_cast<OverlayStateData *>(data);
 718         gboolean done = TRUE;
 719         gboolean changed = FALSE;
 720         gint i;
 721
 722         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 723                 {
 724                 if (osd->icon_time[i] > 1)
 725                         {
 726                         osd->icon_time[i]--;
 727                         if (osd->icon_time[i] < 2)
 728                                 {
 729                                 osd->icon_time[i] = 0;
 730                                 changed = TRUE;
 731                                 }
 732                         else
 733                                 {
 734                                 done = FALSE;
 735                                 }
 736                         }
 737                 }
 738
 739         if (changed) image_osd_update_schedule(osd, FALSE);
 740
 741         if (done)
 742                 {
 743                 osd->timer_id = 0;
 744                 return FALSE;
 745                 }
 746
 747         return TRUE;
 748 }
 749
 750 static void image_osd_timer_schedule(OverlayStateData *osd)
 751 {
 752         if (!osd->timer_id)
 753                 {
 754                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 755                 }
 756 }
 757
 758 static void image_osd_state_cb(ImageWindow *, ImageState state, gpointer data)
 759 {
 760         auto osd = static_cast<OverlayStateData *>(data);
 761
 762         osd->changed_states = static_cast<ImageState>(osd->changed_states | state);
 763         image_osd_update_schedule(osd, FALSE);
 764 }
 765
 766 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 767 {
 768         auto osd = static_cast<OverlayStateData *>(data);
 769
 770         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 771                 {
 772                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 773                 osd->notify = static_cast<NotifyType>(osd->notify | type);
 774                 image_osd_update_schedule(osd, FALSE);
 775                 }
 776 }
 777
 778
 779 static void image_osd_free(OverlayStateData *osd)
 780 {
 781         if (!osd) return;
 782
 783         if (osd->idle_id) g_source_remove(osd->idle_id);
 784         if (osd->timer_id) g_source_remove(osd->timer_id);
 785
 786         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 787
 788         if (osd->imd)
 789                 {
 790                 image_set_osd_data(osd->imd, nullptr);
 791                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 792
 793                 image_set_state_func(osd->imd, nullptr, nullptr);
 794
 795                 image_osd_info_hide(osd);
 796                 image_osd_icons_hide(osd);
 797                 }
 798
 799         if (osd->histogram) histogram_free(osd->histogram);
 800
 801         g_free(osd);
 802 }
 803
 804 static void image_osd_destroy_cb(GtkWidget *, gpointer data)
 805 {
 806         auto osd = static_cast<OverlayStateData *>(data);
 807
 808         osd->imd = nullptr;
 809         image_osd_free(osd);
 810 }
 811
 812 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 813 {
 814         OverlayStateData *osd = image_get_osd_data(imd);
 815
 816         if (!osd)
 817                 {
 818                 osd = g_new0(OverlayStateData, 1);
 819                 osd->imd = imd;
 820                 osd->show = OSD_SHOW_NOTHING;
 821                 osd->x = options->image_overlay.x;
 822                 osd->y = options->image_overlay.y;
 823                 osd->origin = OVL_RELATIVE;
 824
 825                 osd->histogram = histogram_new();
 826
 827                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 828                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 829                 image_set_osd_data(imd, osd);
 830
 831                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 832                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 833                 }
 834
 835         if (show & OSD_SHOW_STATUS)
 836                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 837
 838         if (show != osd->show)
 839                 image_osd_update_schedule(osd, TRUE);
 840
 841         osd->show = show;
 842 }
 843
 844 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 845 {
 846         if (!imd) return;
 847
 848         image_osd_enable(imd, show);
 849 }
 850
 851 OsdShowFlags image_osd_get(ImageWindow *imd)
 852 {
 853         OverlayStateData *osd = image_get_osd_data(imd);
 854
 855         return osd ? osd->show : OSD_SHOW_NOTHING;
 856 }
 857
 858 Histogram *image_osd_get_histogram(ImageWindow *imd)
 859 {
 860         OverlayStateData *osd = image_get_osd_data(imd);
 861
 862         return osd ? osd->histogram : nullptr;
 863 }
 864
 865 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 866 {
 867         Histogram *h_src, *h_dest;
 868         image_osd_set(dest, image_osd_get(src));
 869
 870         h_src = image_osd_get_histogram(src);
 871         h_dest = image_osd_get_histogram(dest);
 872
 873         h_dest->histogram_mode = h_src->histogram_mode;
 874         h_dest->histogram_channel = h_src->histogram_channel;
 875
 876 }
 877
 878 /* duration:
 879     0 = hide
 880     1 = show
 881    2+ = show for duration tenths of a second
 882    -1 = use default duration
 883  */
 884 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 885 {
 886         OverlayStateData *osd = image_get_osd_data(imd);
 887
 888         if (!osd) return;
 889
 890         if (flag >= IMAGE_OSD_COUNT) return;
 891         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 892         if (duration > 1) duration += 1;
 893
 894         osd->icon_time[flag] = duration;
 895
 896         image_osd_update_schedule(osd, FALSE);
 897         image_osd_timer_schedule(osd);
 898 }
 899 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */