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 "image-overlay.h"
  23
  24 #include <config.h>
  25
  26 #include "collect.h"
  27 #include "debug.h"
  28 #include "filedata.h"
  29 #include "histogram.h"
  30 #include "image-load.h"
  31 #include "image.h"
  32 #include "img-view.h"
  33 #include "intl.h"
  34 #include "layout.h"
  35 #include "main-defines.h"
  36 #include "osd.h"
  37 #include "pixbuf-renderer.h"
  38 #include "pixbuf-util.h"
  39 #include "slideshow.h"
  40 #include "ui-fileops.h"
  41
  42 /*
  43  *----------------------------------------------------------------------------
  44  * image overlay
  45  *----------------------------------------------------------------------------
  46  */
  47
  48
  49 struct OverlayStateData {
  50         ImageWindow *imd;
  51         ImageState changed_states;
  52         NotifyType notify;
  53
  54         Histogram *histogram;
  55
  56         OsdShowFlags show;
  57         OverlayRendererFlags origin;
  58
  59         gint ovl_info;
  60
  61         gint x;
  62         gint y;
  63
  64         gint icon_time[IMAGE_OSD_COUNT];
  65         gint icon_id[IMAGE_OSD_COUNT];
  66
  67         guint idle_id; /* event source id */
  68         guint timer_id; /* event source id */
  69         gulong destroy_id;
  70 };
  71
  72
  73 struct OSDIcon {
  74         gboolean reset; /* reset on new image */
  75         gint x;         /* x, y offset */
  76         gint y;
  77         gchar *key;     /* inline pixbuf */
  78 };
  79
  80 static OSDIcon osd_icons[] = {
  81         {  TRUE,   0,   0, nullptr },                   /* none */
  82         {  TRUE, -10, -10, nullptr },                   /* auto rotated */
  83         {  TRUE, -10, -10, nullptr },                   /* user rotated */
  84         {  TRUE, -40, -10, nullptr },                   /* color embedded */
  85         {  TRUE, -70, -10, nullptr },                   /* first image */
  86         {  TRUE, -70, -10, nullptr },                   /* last image */
  87         { FALSE, -70, -10, nullptr },                   /* osd enabled */
  88         { FALSE, 0, 0, nullptr }
  89 };
  90
  91 #define OSD_DATA "overlay-data"
  92
  93 enum {
  94         IMAGE_OSD_DEFAULT_DURATION = 30
  95 };
  96
  97 enum {
  98         HISTOGRAM_HEIGHT = 140,
  99         HISTOGRAM_WIDTH =  256
 100 };
 101
 102 static void image_osd_timer_schedule(OverlayStateData *osd);
 103
 104 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
 105 {
 106         g_assert(template_string);
 107
 108         g_free(*template_string);
 109         *template_string = g_strdup(value);
 110 }
 111
 112
 113 void set_default_image_overlay_template_string(gchar **template_string)
 114 {
 115         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 116 }
 117
 118 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 119 {
 120         g_assert(font_string);
 121
 122         g_free(*font_string);
 123         *font_string = g_strdup(value);
 124 }
 125
 126 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 127 {
 128         OverlayStateData *osd;
 129
 130         if (!imd) return nullptr;
 131
 132         g_assert(imd->pr);
 133
 134         osd = static_cast<OverlayStateData *>(g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA"));
 135         return osd;
 136 }
 137
 138 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 139 {
 140         g_assert(imd);
 141         g_assert(imd->pr);
 142         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 143 }
 144
 145 /*
 146  *----------------------------------------------------------------------------
 147  * image histogram
 148  *----------------------------------------------------------------------------
 149  */
 150
 151
 152 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 153 {
 154         OverlayStateData *osd = image_get_osd_data(imd);
 155
 156         if (!osd || !osd->histogram) return;
 157
 158         histogram_toggle_channel(osd->histogram);
 159         image_osd_update(imd);
 160 }
 161
 162 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 163 {
 164         OverlayStateData *osd = image_get_osd_data(imd);
 165
 166         if (!osd || !osd->histogram) return;
 167
 168         histogram_toggle_mode(osd->histogram);
 169         image_osd_update(imd);
 170 }
 171
 172 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 173 {
 174         OverlayStateData *osd = image_get_osd_data(imd);
 175
 176         if (!osd || !osd->histogram) return;
 177
 178         histogram_set_channel(osd->histogram, chan);
 179         image_osd_update(imd);
 180 }
 181
 182 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 183 {
 184         OverlayStateData *osd = image_get_osd_data(imd);
 185
 186         if (!osd || !osd->histogram) return;
 187
 188         histogram_set_mode(osd->histogram, mode);
 189         image_osd_update(imd);
 190 }
 191
 192 gint image_osd_histogram_get_channel(ImageWindow *imd)
 193 {
 194         OverlayStateData *osd = image_get_osd_data(imd);
 195
 196         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 197
 198         return histogram_get_channel(osd->histogram);
 199 }
 200
 201 gint image_osd_histogram_get_mode(ImageWindow *imd)
 202 {
 203         OverlayStateData *osd = image_get_osd_data(imd);
 204
 205         if (!osd || !osd->histogram) return 0;
 206
 207         return histogram_get_mode(osd->histogram);
 208 }
 209
 210 void image_osd_toggle(ImageWindow *imd)
 211 {
 212         OsdShowFlags show;
 213         if (!imd) return;
 214
 215         show = image_osd_get(imd);
 216         if (show == OSD_SHOW_NOTHING)
 217                 {
 218                 image_osd_set(imd, static_cast<OsdShowFlags>(OSD_SHOW_INFO | OSD_SHOW_STATUS));
 219                 return;
 220                 }
 221
 222         if (show & OSD_SHOW_HISTOGRAM)
 223                 {
 224                 image_osd_set(imd, OSD_SHOW_NOTHING);
 225                 }
 226         else
 227                 {
 228                 image_osd_set(imd, static_cast<OsdShowFlags>(show | OSD_SHOW_HISTOGRAM));
 229                 }
 230 }
 231
 232 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 233 {
 234         GdkPixbuf *pixbuf = nullptr;
 235         gint width;
 236         gint height;
 237         PangoLayout *layout;
 238         const gchar *name;
 239         gchar *text;
 240         gboolean with_hist;
 241         const HistMap *histmap = nullptr;
 242         ImageWindow *imd = osd->imd;
 243         FileData *fd = image_get_fd(imd);
 244         PangoFontDescription *font_desc;
 245
 246         if (!fd) return nullptr;
 247
 248         name = image_get_name(imd);
 249         if (name)
 250                 {
 251                 gint n;
 252                 gint t;
 253                 CollectionData *cd;
 254                 CollectInfo *info;
 255                 GHashTable *vars;
 256
 257                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, nullptr, g_free);
 258
 259                 cd = image_get_collection(imd, &info);
 260                 if (cd)
 261                         {
 262                         t = g_list_length(cd->list);
 263                         n = g_list_index(cd->list, info) + 1;
 264                         if (cd->name)
 265                                 {
 266                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 267                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 268                                 else
 269                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 270                                 }
 271                         else
 272                                 {
 273                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 274                                 }
 275                         }
 276                 else
 277                         {
 278                         LayoutWindow *lw = layout_find_by_image(imd);
 279                         if (lw)
 280                                 {
 281                                 if (lw->slideshow)
 282                                         {
 283                                         n = g_list_length(lw->slideshow->list_done);
 284                                         t = n + g_list_length(lw->slideshow->list);
 285                                         if (n == 0) n = t;
 286                                         }
 287                                 else
 288                                         {
 289                                         t = layout_list_count(lw, nullptr);
 290                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 291                                         }
 292                                 }
 293                         else if (view_window_find_image(imd, &n, &t))
 294                                 {
 295                                 n++;
 296                                 }
 297                         else
 298                                 {
 299                                 t = 1;
 300                                 n = 1;
 301                                 }
 302
 303                         if (n < 1) n = 1;
 304                         if (t < 1) t = 1;
 305
 306                         osd_template_insert(vars, "collection", nullptr, OSDT_NONE);
 307                         }
 308
 309                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 310                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 311                 osd_template_insert(vars, "name", const_cast<gchar *>(name), OSDT_NONE);
 312                 osd_template_insert(vars, "path", const_cast<gchar *>(image_get_path(imd)), OSDT_NONE);
 313                 osd_template_insert(vars, "date", imd->image_fd ? (const_cast<gchar *>(text_from_time(imd->image_fd->date))) : "", OSDT_NONE);
 314                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 315                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 316
 317                 if (!imd->unknown)
 318                         {
 319                         gint w;
 320                         gint h;
 321                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 322
 323                         if (imd->delay_flip &&
 324                             imd->il && load_pixbuf &&
 325                             image_get_pixbuf(imd) != load_pixbuf)
 326                                 {
 327                                 w = gdk_pixbuf_get_width(load_pixbuf);
 328                                 h = gdk_pixbuf_get_height(load_pixbuf);
 329                                 }
 330                         else
 331                                 {
 332                                 image_get_image_size(imd, &w, &h);
 333                                 }
 334
 335
 336                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 337                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 338                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 339                         }
 340                 else
 341                         {
 342                         osd_template_insert(vars, "width", nullptr, OSDT_NONE);
 343                         osd_template_insert(vars, "height", nullptr, OSDT_NONE);
 344                         osd_template_insert(vars, "res", nullptr, OSDT_NONE);
 345                         }
 346
 347                 text = image_osd_mkinfo(options->image_overlay.template_string, imd->image_fd, vars);
 348                 g_hash_table_destroy(vars);
 349
 350         } else {
 351                 /* When does this occur ?? */
 352                 text = g_markup_escape_text(_("Untitled"), -1);
 353         }
 354
 355         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 356         if (with_hist)
 357                 {
 358                 histmap = histmap_get(imd->image_fd);
 359                 if (!histmap)
 360                         {
 361                         histmap_start_idle(imd->image_fd);
 362                         with_hist = FALSE;
 363                         }
 364                 }
 365
 366
 367         {
 368                 gint active_marks = 0;
 369                 gint mark;
 370                 gchar *text2;
 371
 372                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 373                         {
 374                         active_marks += file_data_get_mark(fd, mark);
 375                         }
 376
 377                 if (active_marks > 0)
 378                         {
 379                         GString *buf = g_string_sized_new(strlen(text) + 1 + FILEDATA_MARKS_SIZE * 2);
 380
 381                         if (*text)
 382                                 {
 383                                 g_string_append_printf(buf, "%s\n", text);
 384                                 }
 385
 386                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 387                                 {
 388                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 389                                 }
 390
 391                         g_free(text);
 392                         text = g_string_free(buf, FALSE);
 393                         }
 394
 395                 if (with_hist)
 396                         {
 397                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 398                         if (*text)
 399                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 400                         else
 401                                 text2 = g_strdup(escaped_histogram_label);
 402                         g_free(escaped_histogram_label);
 403                         g_free(text);
 404                         text = text2;
 405                         }
 406         }
 407
 408         font_desc = pango_font_description_from_string(options->image_overlay.font);
 409         layout = gtk_widget_create_pango_layout(imd->pr, nullptr);
 410         pango_layout_set_font_description(layout, font_desc);
 411
 412         pango_layout_set_markup(layout, text, -1);
 413         g_free(text);
 414
 415         pango_layout_get_pixel_size(layout, &width, &height);
 416         /* with empty text width is set to 0, but not height) */
 417         if (width == 0)
 418                 height = 0;
 419         else if (height == 0)
 420                 width = 0;
 421         if (width > 0) width += 10;
 422         if (height > 0) height += 10;
 423
 424         if (with_hist)
 425                 {
 426                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 427                 height += HISTOGRAM_HEIGHT + 5;
 428                 }
 429
 430         if (width > 0 && height > 0)
 431                 {
 432                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 433                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 434                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 435                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 436                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 437                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 438                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 439                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 440                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 441                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 442
 443                 if (with_hist)
 444                         {
 445                         gint x = 5;
 446                         gint y = height - HISTOGRAM_HEIGHT - 5;
 447                         gint w = width - 10;
 448
 449                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 450                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 451                         }
 452                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 453                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 454         }
 455
 456         g_object_unref(G_OBJECT(layout));
 457
 458         return pixbuf;
 459 }
 460
 461 /**
 462  * @brief Create non-standard icons for the OSD
 463  * @param flag
 464  * @returns
 465  *
 466  * IMAGE_OSD_COLOR
 467  * \image html image-osd-color.png
 468  * IMAGE_OSD_FIRST
 469  * \image html image-osd-first.png
 470  * IMAGE_OSD_ICON
 471  * \image html image-osd-icon.png
 472  * IMAGE_OSD_LAST
 473  * \image html image-osd-last.png
 474  * IMAGE_OSD_ROTATE_AUTO
 475  * \image html image-osd-rotate-auto.png
 476  *
 477  */
 478 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 479 {
 480         static GdkPixbuf **icons = nullptr;
 481         GdkPixbuf *icon = nullptr;
 482
 483         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 484         if (icons[flag]) return icons[flag];
 485
 486         if (osd_icons[flag].key)
 487                 {
 488                 icon = pixbuf_inline(osd_icons[flag].key);
 489                 }
 490
 491         if (!icon)
 492                 {
 493                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 494                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 495                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 496                 switch (flag)
 497                         {
 498                         case IMAGE_OSD_ROTATE_AUTO:
 499                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 500                                                 0, 0, 0, 255,
 501                                                 3, 0, 3, 0);
 502                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 503                                                      20, 9, 14, 15, 14, 3,
 504                                                      0, 0, 0, 255);
 505                                 break;
 506                         case IMAGE_OSD_ROTATE_USER:
 507                                 break;
 508                         case IMAGE_OSD_COLOR:
 509                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 510                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 511                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 512                                 break;
 513                         case IMAGE_OSD_FIRST:
 514                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 515                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 516                                                      12, 5, 18, 11, 6, 11,
 517                                                      0, 0, 0, 255);
 518                                 break;
 519                         case IMAGE_OSD_LAST:
 520                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 521                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 522                                                      12, 18, 6, 12, 18, 12,
 523                                                      0, 0, 0, 255);
 524                                 break;
 525                         case IMAGE_OSD_ICON:
 526                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 527                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 528                                 break;
 529                         default:
 530                                 break;
 531                         }
 532                 }
 533
 534         icons[flag] = icon;
 535
 536         return icon;
 537 }
 538
 539 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 540                               OverlayRendererFlags flags)
 541 {
 542         return pixbuf_renderer_overlay_add(reinterpret_cast<PixbufRenderer *>(imd->pr), pixbuf, x, y, flags);
 543 }
 544
 545 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 546 {
 547         pixbuf_renderer_overlay_set(reinterpret_cast<PixbufRenderer *>(imd->pr), id, pixbuf, x, y);
 548 }
 549
 550 static void image_overlay_remove(ImageWindow *imd, gint id)
 551 {
 552         pixbuf_renderer_overlay_remove(reinterpret_cast<PixbufRenderer *>(imd->pr), id);
 553 }
 554
 555 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 556 {
 557         GdkPixbuf *pixbuf;
 558
 559         if (osd->icon_id[flag]) return;
 560
 561         pixbuf = image_osd_icon_pixbuf(flag);
 562         if (!pixbuf) return;
 563
 564         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 565                                                osd_icons[flag].x, osd_icons[flag].y,
 566                                                OVL_RELATIVE);
 567 }
 568
 569 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 570 {
 571         if (osd->icon_id[flag])
 572                 {
 573                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 574                 osd->icon_id[flag] = 0;
 575                 }
 576 }
 577
 578 static void image_osd_icons_reset_time(OverlayStateData *osd)
 579 {
 580         gint i;
 581
 582         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 583                 {
 584                 if (osd_icons[i].reset)
 585                         {
 586                         osd->icon_time[i] = 0;
 587                         }
 588                 }
 589 }
 590
 591 static void image_osd_icons_update(OverlayStateData *osd)
 592 {
 593         gint i;
 594
 595         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 596                 {
 597                 if (osd->icon_time[i] > 0)
 598                         {
 599                         image_osd_icon_show(osd, static_cast<ImageOSDFlag>(i));
 600                         }
 601                 else
 602                         {
 603                         image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 604                         }
 605                 }
 606 }
 607
 608 static void image_osd_icons_hide(OverlayStateData *osd)
 609 {
 610         gint i;
 611
 612         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 613                 {
 614                 image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 615                 }
 616 }
 617
 618 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 619 {
 620         if (osd->ovl_info == 0)
 621                 {
 622                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 623                 }
 624         else
 625                 {
 626                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 627                 }
 628 }
 629
 630 static void image_osd_info_hide(OverlayStateData *osd)
 631 {
 632         if (osd->ovl_info == 0) return;
 633
 634         image_overlay_remove(osd->imd, osd->ovl_info);
 635         osd->ovl_info = 0;
 636 }
 637
 638 static gboolean image_osd_update_cb(gpointer data)
 639 {
 640         auto osd = static_cast<OverlayStateData *>(data);
 641
 642         if (osd->show & OSD_SHOW_INFO)
 643                 {
 644                 /* redraw when the image was changed,
 645                    with histogram we have to redraw also when loading is finished */
 646                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 647                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 648                     osd->notify & NOTIFY_HISTMAP)
 649                         {
 650                         GdkPixbuf *pixbuf;
 651
 652                         pixbuf = image_osd_info_render(osd);
 653                         if (pixbuf)
 654                                 {
 655                                 image_osd_info_show(osd, pixbuf);
 656                                 g_object_unref(pixbuf);
 657                                 }
 658                         else
 659                                 {
 660                                 image_osd_info_hide(osd);
 661                                 }
 662                         }
 663                 }
 664         else
 665                 {
 666                 image_osd_info_hide(osd);
 667                 }
 668
 669         if (osd->show & OSD_SHOW_STATUS)
 670                 {
 671                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 672                         image_osd_icons_reset_time(osd);
 673
 674                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 675                         {
 676                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 677                         image_osd_timer_schedule(osd);
 678                         }
 679
 680                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 681                         {
 682                         gint n = 0;
 683
 684                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 685                                 {
 686                                 n = 1;
 687                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 688                                 }
 689
 690                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 691                         image_osd_timer_schedule(osd);
 692                         }
 693
 694                 image_osd_icons_update(osd);
 695                 }
 696         else
 697                 {
 698                 image_osd_icons_hide(osd);
 699                 }
 700
 701         osd->changed_states = IMAGE_STATE_NONE;
 702         osd->notify = static_cast<NotifyType>(0);
 703         osd->idle_id = 0;
 704         return G_SOURCE_REMOVE;
 705 }
 706
 707 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 708 {
 709         if (force) osd->changed_states = static_cast<ImageState>(osd->changed_states | IMAGE_STATE_IMAGE);
 710
 711         if (!osd->idle_id)
 712                 {
 713                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, nullptr);
 714                 }
 715 }
 716
 717 void image_osd_update(ImageWindow *imd)
 718 {
 719         OverlayStateData *osd = image_get_osd_data(imd);
 720
 721         if (!osd) return;
 722
 723         image_osd_update_schedule(osd, TRUE);
 724 }
 725
 726 static gboolean image_osd_timer_cb(gpointer data)
 727 {
 728         auto osd = static_cast<OverlayStateData *>(data);
 729         gboolean done = TRUE;
 730         gboolean changed = FALSE;
 731         gint i;
 732
 733         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 734                 {
 735                 if (osd->icon_time[i] > 1)
 736                         {
 737                         osd->icon_time[i]--;
 738                         if (osd->icon_time[i] < 2)
 739                                 {
 740                                 osd->icon_time[i] = 0;
 741                                 changed = TRUE;
 742                                 }
 743                         else
 744                                 {
 745                                 done = FALSE;
 746                                 }
 747                         }
 748                 }
 749
 750         if (changed) image_osd_update_schedule(osd, FALSE);
 751
 752         if (done)
 753                 {
 754                 osd->timer_id = 0;
 755                 return FALSE;
 756                 }
 757
 758         return TRUE;
 759 }
 760
 761 static void image_osd_timer_schedule(OverlayStateData *osd)
 762 {
 763         if (!osd->timer_id)
 764                 {
 765                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 766                 }
 767 }
 768
 769 static void image_osd_state_cb(ImageWindow *, ImageState state, gpointer data)
 770 {
 771         auto osd = static_cast<OverlayStateData *>(data);
 772
 773         osd->changed_states = static_cast<ImageState>(osd->changed_states | state);
 774         image_osd_update_schedule(osd, FALSE);
 775 }
 776
 777 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 778 {
 779         auto osd = static_cast<OverlayStateData *>(data);
 780
 781         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 782                 {
 783                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 784                 osd->notify = static_cast<NotifyType>(osd->notify | type);
 785                 image_osd_update_schedule(osd, FALSE);
 786                 }
 787 }
 788
 789
 790 static void image_osd_free(OverlayStateData *osd)
 791 {
 792         if (!osd) return;
 793
 794         if (osd->idle_id) g_source_remove(osd->idle_id);
 795         if (osd->timer_id) g_source_remove(osd->timer_id);
 796
 797         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 798
 799         if (osd->imd)
 800                 {
 801                 image_set_osd_data(osd->imd, nullptr);
 802                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 803
 804                 image_set_state_func(osd->imd, nullptr, nullptr);
 805
 806                 image_osd_info_hide(osd);
 807                 image_osd_icons_hide(osd);
 808                 }
 809
 810         if (osd->histogram) histogram_free(osd->histogram);
 811
 812         g_free(osd);
 813 }
 814
 815 static void image_osd_destroy_cb(GtkWidget *, gpointer data)
 816 {
 817         auto osd = static_cast<OverlayStateData *>(data);
 818
 819         osd->imd = nullptr;
 820         image_osd_free(osd);
 821 }
 822
 823 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 824 {
 825         OverlayStateData *osd = image_get_osd_data(imd);
 826
 827         if (!osd)
 828                 {
 829                 osd = g_new0(OverlayStateData, 1);
 830                 osd->imd = imd;
 831                 osd->show = OSD_SHOW_NOTHING;
 832                 osd->x = options->image_overlay.x;
 833                 osd->y = options->image_overlay.y;
 834                 osd->origin = OVL_RELATIVE;
 835
 836                 osd->histogram = histogram_new();
 837
 838                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 839                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 840                 image_set_osd_data(imd, osd);
 841
 842                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 843                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 844                 }
 845
 846         if (show & OSD_SHOW_STATUS)
 847                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 848
 849         if (show != osd->show)
 850                 image_osd_update_schedule(osd, TRUE);
 851
 852         osd->show = show;
 853 }
 854
 855 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 856 {
 857         if (!imd) return;
 858
 859         image_osd_enable(imd, show);
 860 }
 861
 862 OsdShowFlags image_osd_get(ImageWindow *imd)
 863 {
 864         OverlayStateData *osd = image_get_osd_data(imd);
 865
 866         return osd ? osd->show : OSD_SHOW_NOTHING;
 867 }
 868
 869 Histogram *image_osd_get_histogram(ImageWindow *imd)
 870 {
 871         OverlayStateData *osd = image_get_osd_data(imd);
 872
 873         return osd ? osd->histogram : nullptr;
 874 }
 875
 876 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 877 {
 878         Histogram *h_src;
 879         Histogram *h_dest;
 880         image_osd_set(dest, image_osd_get(src));
 881
 882         h_src = image_osd_get_histogram(src);
 883         h_dest = image_osd_get_histogram(dest);
 884
 885         h_dest->histogram_mode = h_src->histogram_mode;
 886         h_dest->histogram_channel = h_src->histogram_channel;
 887
 888 }
 889
 890 /* duration:
 891     0 = hide
 892     1 = show
 893    2+ = show for duration tenths of a second
 894    -1 = use default duration
 895  */
 896 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 897 {
 898         OverlayStateData *osd = image_get_osd_data(imd);
 899
 900         if (!osd) return;
 901
 902         if (flag >= IMAGE_OSD_COUNT) return;
 903         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 904         if (duration > 1) duration += 1;
 905
 906         osd->icon_time[flag] = duration;
 907
 908         image_osd_update_schedule(osd, FALSE);
 909         image_osd_timer_schedule(osd);
 910 }
 911 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */