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 enum {
  90         IMAGE_OSD_DEFAULT_DURATION = 30
  91 };
  92
  93 enum {
  94         HISTOGRAM_HEIGHT = 140,
  95         HISTOGRAM_WIDTH =  256
  96 };
  97
  98 static void image_osd_timer_schedule(OverlayStateData *osd);
  99
 100 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
 101 {
 102         g_assert(template_string);
 103
 104         g_free(*template_string);
 105         *template_string = g_strdup(value);
 106 }
 107
 108
 109 void set_default_image_overlay_template_string(gchar **template_string)
 110 {
 111         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 112 }
 113
 114 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 115 {
 116         g_assert(font_string);
 117
 118         g_free(*font_string);
 119         *font_string = g_strdup(value);
 120 }
 121
 122 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 123 {
 124         OverlayStateData *osd;
 125
 126         if (!imd) return nullptr;
 127
 128         g_assert(imd->pr);
 129
 130         osd = static_cast<OverlayStateData *>(g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA"));
 131         return osd;
 132 }
 133
 134 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 135 {
 136         g_assert(imd);
 137         g_assert(imd->pr);
 138         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 139 }
 140
 141 /*
 142  *----------------------------------------------------------------------------
 143  * image histogram
 144  *----------------------------------------------------------------------------
 145  */
 146
 147
 148 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 149 {
 150         OverlayStateData *osd = image_get_osd_data(imd);
 151
 152         if (!osd || !osd->histogram) return;
 153
 154         histogram_toggle_channel(osd->histogram);
 155         image_osd_update(imd);
 156 }
 157
 158 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 159 {
 160         OverlayStateData *osd = image_get_osd_data(imd);
 161
 162         if (!osd || !osd->histogram) return;
 163
 164         histogram_toggle_mode(osd->histogram);
 165         image_osd_update(imd);
 166 }
 167
 168 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 169 {
 170         OverlayStateData *osd = image_get_osd_data(imd);
 171
 172         if (!osd || !osd->histogram) return;
 173
 174         histogram_set_channel(osd->histogram, chan);
 175         image_osd_update(imd);
 176 }
 177
 178 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 179 {
 180         OverlayStateData *osd = image_get_osd_data(imd);
 181
 182         if (!osd || !osd->histogram) return;
 183
 184         histogram_set_mode(osd->histogram, mode);
 185         image_osd_update(imd);
 186 }
 187
 188 gint image_osd_histogram_get_channel(ImageWindow *imd)
 189 {
 190         OverlayStateData *osd = image_get_osd_data(imd);
 191
 192         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 193
 194         return histogram_get_channel(osd->histogram);
 195 }
 196
 197 gint image_osd_histogram_get_mode(ImageWindow *imd)
 198 {
 199         OverlayStateData *osd = image_get_osd_data(imd);
 200
 201         if (!osd || !osd->histogram) return 0;
 202
 203         return histogram_get_mode(osd->histogram);
 204 }
 205
 206 void image_osd_toggle(ImageWindow *imd)
 207 {
 208         OsdShowFlags show;
 209         if (!imd) return;
 210
 211         show = image_osd_get(imd);
 212         if (show == OSD_SHOW_NOTHING)
 213                 {
 214                 image_osd_set(imd, static_cast<OsdShowFlags>(OSD_SHOW_INFO | OSD_SHOW_STATUS));
 215                 return;
 216                 }
 217
 218         if (show & OSD_SHOW_HISTOGRAM)
 219                 {
 220                 image_osd_set(imd, OSD_SHOW_NOTHING);
 221                 }
 222         else
 223                 {
 224                 image_osd_set(imd, static_cast<OsdShowFlags>(show | OSD_SHOW_HISTOGRAM));
 225                 }
 226 }
 227
 228 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 229 {
 230         GdkPixbuf *pixbuf = nullptr;
 231         gint width;
 232         gint height;
 233         PangoLayout *layout;
 234         const gchar *name;
 235         gchar *text;
 236         gboolean with_hist;
 237         const HistMap *histmap = nullptr;
 238         ImageWindow *imd = osd->imd;
 239         FileData *fd = image_get_fd(imd);
 240         PangoFontDescription *font_desc;
 241
 242         if (!fd) return nullptr;
 243
 244         name = image_get_name(imd);
 245         if (name)
 246                 {
 247                 gint n;
 248                 gint t;
 249                 CollectionData *cd;
 250                 CollectInfo *info;
 251                 GHashTable *vars;
 252
 253                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, nullptr, g_free);
 254
 255                 cd = image_get_collection(imd, &info);
 256                 if (cd)
 257                         {
 258                         t = g_list_length(cd->list);
 259                         n = g_list_index(cd->list, info) + 1;
 260                         if (cd->name)
 261                                 {
 262                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 263                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 264                                 else
 265                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 266                                 }
 267                         else
 268                                 {
 269                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 270                                 }
 271                         }
 272                 else
 273                         {
 274                         LayoutWindow *lw = layout_find_by_image(imd);
 275                         if (lw)
 276                                 {
 277                                 if (lw->slideshow)
 278                                         {
 279                                         n = g_list_length(lw->slideshow->list_done);
 280                                         t = n + g_list_length(lw->slideshow->list);
 281                                         if (n == 0) n = t;
 282                                         }
 283                                 else
 284                                         {
 285                                         t = layout_list_count(lw, nullptr);
 286                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 287                                         }
 288                                 }
 289                         else if (view_window_find_image(imd, &n, &t))
 290                                 {
 291                                 n++;
 292                                 }
 293                         else
 294                                 {
 295                                 t = 1;
 296                                 n = 1;
 297                                 }
 298
 299                         if (n < 1) n = 1;
 300                         if (t < 1) t = 1;
 301
 302                         osd_template_insert(vars, "collection", nullptr, OSDT_NONE);
 303                         }
 304
 305                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 306                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 307                 osd_template_insert(vars, "name", const_cast<gchar *>(name), OSDT_NONE);
 308                 osd_template_insert(vars, "path", const_cast<gchar *>(image_get_path(imd)), OSDT_NONE);
 309                 osd_template_insert(vars, "date", imd->image_fd ? (const_cast<gchar *>(text_from_time(imd->image_fd->date))) : "", OSDT_NONE);
 310                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 311                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 312
 313                 if (!imd->unknown)
 314                         {
 315                         gint w;
 316                         gint h;
 317                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 318
 319                         if (imd->delay_flip &&
 320                             imd->il && load_pixbuf &&
 321                             image_get_pixbuf(imd) != load_pixbuf)
 322                                 {
 323                                 w = gdk_pixbuf_get_width(load_pixbuf);
 324                                 h = gdk_pixbuf_get_height(load_pixbuf);
 325                                 }
 326                         else
 327                                 {
 328                                 image_get_image_size(imd, &w, &h);
 329                                 }
 330
 331
 332                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 333                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 334                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 335                         }
 336                 else
 337                         {
 338                         osd_template_insert(vars, "width", nullptr, OSDT_NONE);
 339                         osd_template_insert(vars, "height", nullptr, OSDT_NONE);
 340                         osd_template_insert(vars, "res", nullptr, OSDT_NONE);
 341                         }
 342
 343                 text = image_osd_mkinfo(options->image_overlay.template_string, imd->image_fd, vars);
 344                 g_hash_table_destroy(vars);
 345
 346         } else {
 347                 /* When does this occur ?? */
 348                 text = g_markup_escape_text(_("Untitled"), -1);
 349         }
 350
 351         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 352         if (with_hist)
 353                 {
 354                 histmap = histmap_get(imd->image_fd);
 355                 if (!histmap)
 356                         {
 357                         histmap_start_idle(imd->image_fd);
 358                         with_hist = FALSE;
 359                         }
 360                 }
 361
 362
 363         {
 364                 gint active_marks = 0;
 365                 gint mark;
 366                 gchar *text2;
 367
 368                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 369                         {
 370                         active_marks += file_data_get_mark(fd, mark);
 371                         }
 372
 373                 if (active_marks > 0)
 374                         {
 375                         GString *buf = g_string_sized_new(strlen(text) + 1 + FILEDATA_MARKS_SIZE * 2);
 376
 377                         if (*text)
 378                                 {
 379                                 g_string_append_printf(buf, "%s\n", text);
 380                                 }
 381
 382                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 383                                 {
 384                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 385                                 }
 386
 387                         g_free(text);
 388                         text = g_string_free(buf, FALSE);
 389                         }
 390
 391                 if (with_hist)
 392                         {
 393                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 394                         if (*text)
 395                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 396                         else
 397                                 text2 = g_strdup(escaped_histogram_label);
 398                         g_free(escaped_histogram_label);
 399                         g_free(text);
 400                         text = text2;
 401                         }
 402         }
 403
 404         font_desc = pango_font_description_from_string(options->image_overlay.font);
 405         layout = gtk_widget_create_pango_layout(imd->pr, nullptr);
 406         pango_layout_set_font_description(layout, font_desc);
 407
 408         pango_layout_set_markup(layout, text, -1);
 409         g_free(text);
 410
 411         pango_layout_get_pixel_size(layout, &width, &height);
 412         /* with empty text width is set to 0, but not height) */
 413         if (width == 0)
 414                 height = 0;
 415         else if (height == 0)
 416                 width = 0;
 417         if (width > 0) width += 10;
 418         if (height > 0) height += 10;
 419
 420         if (with_hist)
 421                 {
 422                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 423                 height += HISTOGRAM_HEIGHT + 5;
 424                 }
 425
 426         if (width > 0 && height > 0)
 427                 {
 428                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 429                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 430                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 431                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 432                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 433                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 434                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 435                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 436                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 437                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 438
 439                 if (with_hist)
 440                         {
 441                         gint x = 5;
 442                         gint y = height - HISTOGRAM_HEIGHT - 5;
 443                         gint w = width - 10;
 444
 445                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 446                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 447                         }
 448                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 449                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 450         }
 451
 452         g_object_unref(G_OBJECT(layout));
 453
 454         return pixbuf;
 455 }
 456
 457 /**
 458  * @brief Create non-standard icons for the OSD
 459  * @param flag
 460  * @returns
 461  *
 462  * IMAGE_OSD_COLOR
 463  * \image html image-osd-color.png
 464  * IMAGE_OSD_FIRST
 465  * \image html image-osd-first.png
 466  * IMAGE_OSD_ICON
 467  * \image html image-osd-icon.png
 468  * IMAGE_OSD_LAST
 469  * \image html image-osd-last.png
 470  * IMAGE_OSD_ROTATE_AUTO
 471  * \image html image-osd-rotate-auto.png
 472  *
 473  */
 474 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 475 {
 476         static GdkPixbuf **icons = nullptr;
 477         GdkPixbuf *icon = nullptr;
 478
 479         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 480         if (icons[flag]) return icons[flag];
 481
 482         if (osd_icons[flag].key)
 483                 {
 484                 icon = pixbuf_inline(osd_icons[flag].key);
 485                 }
 486
 487         if (!icon)
 488                 {
 489                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 490                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 491                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 492                 switch (flag)
 493                         {
 494                         case IMAGE_OSD_ROTATE_AUTO:
 495                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 496                                                 0, 0, 0, 255,
 497                                                 3, 0, 3, 0);
 498                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 499                                                      20, 9, 14, 15, 14, 3,
 500                                                      0, 0, 0, 255);
 501                                 break;
 502                         case IMAGE_OSD_ROTATE_USER:
 503                                 break;
 504                         case IMAGE_OSD_COLOR:
 505                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 506                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 507                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 508                                 break;
 509                         case IMAGE_OSD_FIRST:
 510                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 511                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 512                                                      12, 5, 18, 11, 6, 11,
 513                                                      0, 0, 0, 255);
 514                                 break;
 515                         case IMAGE_OSD_LAST:
 516                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 517                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 518                                                      12, 18, 6, 12, 18, 12,
 519                                                      0, 0, 0, 255);
 520                                 break;
 521                         case IMAGE_OSD_ICON:
 522                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 523                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 524                                 break;
 525                         default:
 526                                 break;
 527                         }
 528                 }
 529
 530         icons[flag] = icon;
 531
 532         return icon;
 533 }
 534
 535 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 536                               OverlayRendererFlags flags)
 537 {
 538         return pixbuf_renderer_overlay_add(reinterpret_cast<PixbufRenderer *>(imd->pr), pixbuf, x, y, flags);
 539 }
 540
 541 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 542 {
 543         pixbuf_renderer_overlay_set(reinterpret_cast<PixbufRenderer *>(imd->pr), id, pixbuf, x, y);
 544 }
 545
 546 static void image_overlay_remove(ImageWindow *imd, gint id)
 547 {
 548         pixbuf_renderer_overlay_remove(reinterpret_cast<PixbufRenderer *>(imd->pr), id);
 549 }
 550
 551 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 552 {
 553         GdkPixbuf *pixbuf;
 554
 555         if (osd->icon_id[flag]) return;
 556
 557         pixbuf = image_osd_icon_pixbuf(flag);
 558         if (!pixbuf) return;
 559
 560         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 561                                                osd_icons[flag].x, osd_icons[flag].y,
 562                                                OVL_RELATIVE);
 563 }
 564
 565 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 566 {
 567         if (osd->icon_id[flag])
 568                 {
 569                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 570                 osd->icon_id[flag] = 0;
 571                 }
 572 }
 573
 574 static void image_osd_icons_reset_time(OverlayStateData *osd)
 575 {
 576         gint i;
 577
 578         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 579                 {
 580                 if (osd_icons[i].reset)
 581                         {
 582                         osd->icon_time[i] = 0;
 583                         }
 584                 }
 585 }
 586
 587 static void image_osd_icons_update(OverlayStateData *osd)
 588 {
 589         gint i;
 590
 591         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 592                 {
 593                 if (osd->icon_time[i] > 0)
 594                         {
 595                         image_osd_icon_show(osd, static_cast<ImageOSDFlag>(i));
 596                         }
 597                 else
 598                         {
 599                         image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 600                         }
 601                 }
 602 }
 603
 604 static void image_osd_icons_hide(OverlayStateData *osd)
 605 {
 606         gint i;
 607
 608         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 609                 {
 610                 image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 611                 }
 612 }
 613
 614 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 615 {
 616         if (osd->ovl_info == 0)
 617                 {
 618                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 619                 }
 620         else
 621                 {
 622                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 623                 }
 624 }
 625
 626 static void image_osd_info_hide(OverlayStateData *osd)
 627 {
 628         if (osd->ovl_info == 0) return;
 629
 630         image_overlay_remove(osd->imd, osd->ovl_info);
 631         osd->ovl_info = 0;
 632 }
 633
 634 static gboolean image_osd_update_cb(gpointer data)
 635 {
 636         auto osd = static_cast<OverlayStateData *>(data);
 637
 638         if (osd->show & OSD_SHOW_INFO)
 639                 {
 640                 /* redraw when the image was changed,
 641                    with histogram we have to redraw also when loading is finished */
 642                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 643                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 644                     osd->notify & NOTIFY_HISTMAP)
 645                         {
 646                         GdkPixbuf *pixbuf;
 647
 648                         pixbuf = image_osd_info_render(osd);
 649                         if (pixbuf)
 650                                 {
 651                                 image_osd_info_show(osd, pixbuf);
 652                                 g_object_unref(pixbuf);
 653                                 }
 654                         else
 655                                 {
 656                                 image_osd_info_hide(osd);
 657                                 }
 658                         }
 659                 }
 660         else
 661                 {
 662                 image_osd_info_hide(osd);
 663                 }
 664
 665         if (osd->show & OSD_SHOW_STATUS)
 666                 {
 667                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 668                         image_osd_icons_reset_time(osd);
 669
 670                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 671                         {
 672                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 673                         image_osd_timer_schedule(osd);
 674                         }
 675
 676                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 677                         {
 678                         gint n = 0;
 679
 680                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 681                                 {
 682                                 n = 1;
 683                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 684                                 }
 685
 686                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 687                         image_osd_timer_schedule(osd);
 688                         }
 689
 690                 image_osd_icons_update(osd);
 691                 }
 692         else
 693                 {
 694                 image_osd_icons_hide(osd);
 695                 }
 696
 697         osd->changed_states = IMAGE_STATE_NONE;
 698         osd->notify = static_cast<NotifyType>(0);
 699         osd->idle_id = 0;
 700         return G_SOURCE_REMOVE;
 701 }
 702
 703 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 704 {
 705         if (force) osd->changed_states = static_cast<ImageState>(osd->changed_states | IMAGE_STATE_IMAGE);
 706
 707         if (!osd->idle_id)
 708                 {
 709                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, nullptr);
 710                 }
 711 }
 712
 713 void image_osd_update(ImageWindow *imd)
 714 {
 715         OverlayStateData *osd = image_get_osd_data(imd);
 716
 717         if (!osd) return;
 718
 719         image_osd_update_schedule(osd, TRUE);
 720 }
 721
 722 static gboolean image_osd_timer_cb(gpointer data)
 723 {
 724         auto osd = static_cast<OverlayStateData *>(data);
 725         gboolean done = TRUE;
 726         gboolean changed = FALSE;
 727         gint i;
 728
 729         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 730                 {
 731                 if (osd->icon_time[i] > 1)
 732                         {
 733                         osd->icon_time[i]--;
 734                         if (osd->icon_time[i] < 2)
 735                                 {
 736                                 osd->icon_time[i] = 0;
 737                                 changed = TRUE;
 738                                 }
 739                         else
 740                                 {
 741                                 done = FALSE;
 742                                 }
 743                         }
 744                 }
 745
 746         if (changed) image_osd_update_schedule(osd, FALSE);
 747
 748         if (done)
 749                 {
 750                 osd->timer_id = 0;
 751                 return FALSE;
 752                 }
 753
 754         return TRUE;
 755 }
 756
 757 static void image_osd_timer_schedule(OverlayStateData *osd)
 758 {
 759         if (!osd->timer_id)
 760                 {
 761                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 762                 }
 763 }
 764
 765 static void image_osd_state_cb(ImageWindow *, ImageState state, gpointer data)
 766 {
 767         auto osd = static_cast<OverlayStateData *>(data);
 768
 769         osd->changed_states = static_cast<ImageState>(osd->changed_states | state);
 770         image_osd_update_schedule(osd, FALSE);
 771 }
 772
 773 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 774 {
 775         auto osd = static_cast<OverlayStateData *>(data);
 776
 777         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 778                 {
 779                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 780                 osd->notify = static_cast<NotifyType>(osd->notify | type);
 781                 image_osd_update_schedule(osd, FALSE);
 782                 }
 783 }
 784
 785
 786 static void image_osd_free(OverlayStateData *osd)
 787 {
 788         if (!osd) return;
 789
 790         if (osd->idle_id) g_source_remove(osd->idle_id);
 791         if (osd->timer_id) g_source_remove(osd->timer_id);
 792
 793         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 794
 795         if (osd->imd)
 796                 {
 797                 image_set_osd_data(osd->imd, nullptr);
 798                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 799
 800                 image_set_state_func(osd->imd, nullptr, nullptr);
 801
 802                 image_osd_info_hide(osd);
 803                 image_osd_icons_hide(osd);
 804                 }
 805
 806         if (osd->histogram) histogram_free(osd->histogram);
 807
 808         g_free(osd);
 809 }
 810
 811 static void image_osd_destroy_cb(GtkWidget *, gpointer data)
 812 {
 813         auto osd = static_cast<OverlayStateData *>(data);
 814
 815         osd->imd = nullptr;
 816         image_osd_free(osd);
 817 }
 818
 819 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 820 {
 821         OverlayStateData *osd = image_get_osd_data(imd);
 822
 823         if (!osd)
 824                 {
 825                 osd = g_new0(OverlayStateData, 1);
 826                 osd->imd = imd;
 827                 osd->show = OSD_SHOW_NOTHING;
 828                 osd->x = options->image_overlay.x;
 829                 osd->y = options->image_overlay.y;
 830                 osd->origin = OVL_RELATIVE;
 831
 832                 osd->histogram = histogram_new();
 833
 834                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 835                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 836                 image_set_osd_data(imd, osd);
 837
 838                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 839                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 840                 }
 841
 842         if (show & OSD_SHOW_STATUS)
 843                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 844
 845         if (show != osd->show)
 846                 image_osd_update_schedule(osd, TRUE);
 847
 848         osd->show = show;
 849 }
 850
 851 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 852 {
 853         if (!imd) return;
 854
 855         image_osd_enable(imd, show);
 856 }
 857
 858 OsdShowFlags image_osd_get(ImageWindow *imd)
 859 {
 860         OverlayStateData *osd = image_get_osd_data(imd);
 861
 862         return osd ? osd->show : OSD_SHOW_NOTHING;
 863 }
 864
 865 Histogram *image_osd_get_histogram(ImageWindow *imd)
 866 {
 867         OverlayStateData *osd = image_get_osd_data(imd);
 868
 869         return osd ? osd->histogram : nullptr;
 870 }
 871
 872 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 873 {
 874         Histogram *h_src;
 875         Histogram *h_dest;
 876         image_osd_set(dest, image_osd_get(src));
 877
 878         h_src = image_osd_get_histogram(src);
 879         h_dest = image_osd_get_histogram(dest);
 880
 881         h_dest->histogram_mode = h_src->histogram_mode;
 882         h_dest->histogram_channel = h_src->histogram_channel;
 883
 884 }
 885
 886 /* duration:
 887     0 = hide
 888     1 = show
 889    2+ = show for duration tenths of a second
 890    -1 = use default duration
 891  */
 892 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 893 {
 894         OverlayStateData *osd = image_get_osd_data(imd);
 895
 896         if (!osd) return;
 897
 898         if (flag >= IMAGE_OSD_COUNT) return;
 899         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 900         if (duration > 1) duration += 1;
 901
 902         osd->icon_time[flag] = duration;
 903
 904         image_osd_update_schedule(osd, FALSE);
 905         image_osd_timer_schedule(osd);
 906 }
 907 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */