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 <cstring>
  25
  26 #include <gdk-pixbuf/gdk-pixbuf.h>
  27 #include <glib-object.h>
  28 #include <gtk/gtk.h>
  29 #include <pango/pango.h>
  30
  31 #include "collect.h"
  32 #include "debug.h"
  33 #include "filedata.h"
  34 #include "histogram.h"
  35 #include "image-load.h"
  36 #include "image.h"
  37 #include "img-view.h"
  38 #include "intl.h"
  39 #include "layout.h"
  40 #include "main-defines.h"
  41 #include "options.h"
  42 #include "osd.h"
  43 #include "pixbuf-renderer.h"
  44 #include "pixbuf-util.h"
  45 #include "slideshow.h"
  46 #include "typedefs.h"
  47 #include "ui-fileops.h"
  48
  49 namespace
  50 {
  51
  52 constexpr gint IMAGE_OSD_DEFAULT_DURATION = 30;
  53
  54 } // namespace
  55
  56 struct HistMap;
  57
  58 /*
  59  *----------------------------------------------------------------------------
  60  * image overlay
  61  *----------------------------------------------------------------------------
  62  */
  63
  64
  65 struct OverlayStateData {
  66         ImageWindow *imd;
  67         ImageState changed_states;
  68         NotifyType notify;
  69
  70         Histogram *histogram;
  71
  72         OsdShowFlags show;
  73         OverlayRendererFlags origin;
  74
  75         gint ovl_info;
  76
  77         gint x;
  78         gint y;
  79
  80         gint icon_time[IMAGE_OSD_COUNT];
  81         gint icon_id[IMAGE_OSD_COUNT];
  82
  83         guint idle_id; /* event source id */
  84         guint timer_id; /* event source id */
  85         gulong destroy_id;
  86 };
  87
  88
  89 struct OSDIcon {
  90         gboolean reset; /* reset on new image */
  91         gint x;         /* x, y offset */
  92         gint y;
  93         gchar *key;     /* inline pixbuf */
  94 };
  95
  96 static OSDIcon osd_icons[] = {
  97         {  TRUE,   0,   0, nullptr },                   /* none */
  98         {  TRUE, -10, -10, nullptr },                   /* auto rotated */
  99         {  TRUE, -10, -10, nullptr },                   /* user rotated */
 100         {  TRUE, -40, -10, nullptr },                   /* color embedded */
 101         {  TRUE, -70, -10, nullptr },                   /* first image */
 102         {  TRUE, -70, -10, nullptr },                   /* last image */
 103         { FALSE, -70, -10, nullptr },                   /* osd enabled */
 104         { FALSE, 0, 0, nullptr }
 105 };
 106
 107 #define OSD_DATA "overlay-data"
 108
 109 enum {
 110         HISTOGRAM_HEIGHT = 140,
 111         HISTOGRAM_WIDTH =  256
 112 };
 113
 114 static void image_osd_timer_schedule(OverlayStateData *osd);
 115
 116 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
 117 {
 118         g_assert(template_string);
 119
 120         g_free(*template_string);
 121         *template_string = g_strdup(value);
 122 }
 123
 124
 125 void set_default_image_overlay_template_string(gchar **template_string)
 126 {
 127         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 128 }
 129
 130 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 131 {
 132         g_assert(font_string);
 133
 134         g_free(*font_string);
 135         *font_string = g_strdup(value);
 136 }
 137
 138 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 139 {
 140         OverlayStateData *osd;
 141
 142         if (!imd) return nullptr;
 143
 144         g_assert(imd->pr);
 145
 146         osd = static_cast<OverlayStateData *>(g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA"));
 147         return osd;
 148 }
 149
 150 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 151 {
 152         g_assert(imd);
 153         g_assert(imd->pr);
 154         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 155 }
 156
 157 /*
 158  *----------------------------------------------------------------------------
 159  * image histogram
 160  *----------------------------------------------------------------------------
 161  */
 162
 163
 164 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 165 {
 166         OverlayStateData *osd = image_get_osd_data(imd);
 167
 168         if (!osd || !osd->histogram) return;
 169
 170         histogram_toggle_channel(osd->histogram);
 171         image_osd_update(imd);
 172 }
 173
 174 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 175 {
 176         OverlayStateData *osd = image_get_osd_data(imd);
 177
 178         if (!osd || !osd->histogram) return;
 179
 180         histogram_toggle_mode(osd->histogram);
 181         image_osd_update(imd);
 182 }
 183
 184 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 185 {
 186         OverlayStateData *osd = image_get_osd_data(imd);
 187
 188         if (!osd || !osd->histogram) return;
 189
 190         histogram_set_channel(osd->histogram, chan);
 191         image_osd_update(imd);
 192 }
 193
 194 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 195 {
 196         OverlayStateData *osd = image_get_osd_data(imd);
 197
 198         if (!osd || !osd->histogram) return;
 199
 200         histogram_set_mode(osd->histogram, mode);
 201         image_osd_update(imd);
 202 }
 203
 204 gint image_osd_histogram_get_channel(ImageWindow *imd)
 205 {
 206         OverlayStateData *osd = image_get_osd_data(imd);
 207
 208         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 209
 210         return histogram_get_channel(osd->histogram);
 211 }
 212
 213 gint image_osd_histogram_get_mode(ImageWindow *imd)
 214 {
 215         OverlayStateData *osd = image_get_osd_data(imd);
 216
 217         if (!osd || !osd->histogram) return 0;
 218
 219         return histogram_get_mode(osd->histogram);
 220 }
 221
 222 void image_osd_toggle(ImageWindow *imd)
 223 {
 224         OsdShowFlags show;
 225         if (!imd) return;
 226
 227         show = image_osd_get(imd);
 228         if (show == OSD_SHOW_NOTHING)
 229                 {
 230                 image_osd_set(imd, static_cast<OsdShowFlags>(OSD_SHOW_INFO | OSD_SHOW_STATUS));
 231                 return;
 232                 }
 233
 234         if (show & OSD_SHOW_HISTOGRAM)
 235                 {
 236                 image_osd_set(imd, OSD_SHOW_NOTHING);
 237                 }
 238         else
 239                 {
 240                 image_osd_set(imd, static_cast<OsdShowFlags>(show | OSD_SHOW_HISTOGRAM));
 241                 }
 242 }
 243
 244 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 245 {
 246         GdkPixbuf *pixbuf = nullptr;
 247         gint width;
 248         gint height;
 249         PangoLayout *layout;
 250         const gchar *name;
 251         gchar *text;
 252         gboolean with_hist;
 253         const HistMap *histmap = nullptr;
 254         ImageWindow *imd = osd->imd;
 255         FileData *fd = image_get_fd(imd);
 256         PangoFontDescription *font_desc;
 257
 258         if (!fd) return nullptr;
 259
 260         name = image_get_name(imd);
 261         if (name)
 262                 {
 263                 gint n;
 264                 gint t;
 265                 CollectionData *cd;
 266                 CollectInfo *info;
 267                 GHashTable *vars;
 268
 269                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, nullptr, g_free);
 270
 271                 cd = image_get_collection(imd, &info);
 272                 if (cd)
 273                         {
 274                         t = g_list_length(cd->list);
 275                         n = g_list_index(cd->list, info) + 1;
 276                         if (cd->name)
 277                                 {
 278                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 279                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 280                                 else
 281                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 282                                 }
 283                         else
 284                                 {
 285                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 286                                 }
 287                         }
 288                 else
 289                         {
 290                         LayoutWindow *lw = layout_find_by_image(imd);
 291                         if (lw)
 292                                 {
 293                                 if (lw->slideshow)
 294                                         {
 295                                         n = g_list_length(lw->slideshow->list_done);
 296                                         t = n + g_list_length(lw->slideshow->list);
 297                                         if (n == 0) n = t;
 298                                         }
 299                                 else
 300                                         {
 301                                         t = layout_list_count(lw, nullptr);
 302                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 303                                         }
 304                                 }
 305                         else if (view_window_find_image(imd, &n, &t))
 306                                 {
 307                                 n++;
 308                                 }
 309                         else
 310                                 {
 311                                 t = 1;
 312                                 n = 1;
 313                                 }
 314
 315                         if (n < 1) n = 1;
 316                         if (t < 1) t = 1;
 317
 318                         osd_template_insert(vars, "collection", nullptr, OSDT_NONE);
 319                         }
 320
 321                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 322                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 323                 osd_template_insert(vars, "name", const_cast<gchar *>(name), OSDT_NONE);
 324                 osd_template_insert(vars, "path", const_cast<gchar *>(image_get_path(imd)), OSDT_NONE);
 325                 osd_template_insert(vars, "date", imd->image_fd ? (const_cast<gchar *>(text_from_time(imd->image_fd->date))) : "", OSDT_NONE);
 326                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 327                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 328
 329                 if (!imd->unknown)
 330                         {
 331                         gint w;
 332                         gint h;
 333                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 334
 335                         if (imd->delay_flip &&
 336                             imd->il && load_pixbuf &&
 337                             image_get_pixbuf(imd) != load_pixbuf)
 338                                 {
 339                                 w = gdk_pixbuf_get_width(load_pixbuf);
 340                                 h = gdk_pixbuf_get_height(load_pixbuf);
 341                                 }
 342                         else
 343                                 {
 344                                 image_get_image_size(imd, &w, &h);
 345                                 }
 346
 347
 348                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 349                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 350                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 351                         }
 352                 else
 353                         {
 354                         osd_template_insert(vars, "width", nullptr, OSDT_NONE);
 355                         osd_template_insert(vars, "height", nullptr, OSDT_NONE);
 356                         osd_template_insert(vars, "res", nullptr, OSDT_NONE);
 357                         }
 358
 359                 text = image_osd_mkinfo(options->image_overlay.template_string, imd->image_fd, vars);
 360                 g_hash_table_destroy(vars);
 361
 362         } else {
 363                 /* When does this occur ?? */
 364                 text = g_markup_escape_text(_("Untitled"), -1);
 365         }
 366
 367         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 368         if (with_hist)
 369                 {
 370                 histmap = histmap_get(imd->image_fd);
 371                 if (!histmap)
 372                         {
 373                         histmap_start_idle(imd->image_fd);
 374                         with_hist = FALSE;
 375                         }
 376                 }
 377
 378
 379         {
 380                 gint active_marks = 0;
 381                 gint mark;
 382                 gchar *text2;
 383
 384                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 385                         {
 386                         active_marks += file_data_get_mark(fd, mark);
 387                         }
 388
 389                 if (active_marks > 0)
 390                         {
 391                         GString *buf = g_string_sized_new(strlen(text) + 1 + FILEDATA_MARKS_SIZE * 2);
 392
 393                         if (*text)
 394                                 {
 395                                 g_string_append_printf(buf, "%s\n", text);
 396                                 }
 397
 398                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 399                                 {
 400                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 401                                 }
 402
 403                         g_free(text);
 404                         text = g_string_free(buf, FALSE);
 405                         }
 406
 407                 if (with_hist)
 408                         {
 409                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 410                         if (*text)
 411                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 412                         else
 413                                 text2 = g_strdup(escaped_histogram_label);
 414                         g_free(escaped_histogram_label);
 415                         g_free(text);
 416                         text = text2;
 417                         }
 418         }
 419
 420         font_desc = pango_font_description_from_string(options->image_overlay.font);
 421         layout = gtk_widget_create_pango_layout(imd->pr, nullptr);
 422         pango_layout_set_font_description(layout, font_desc);
 423
 424         pango_layout_set_markup(layout, text, -1);
 425         g_free(text);
 426
 427         pango_layout_get_pixel_size(layout, &width, &height);
 428         /* with empty text width is set to 0, but not height) */
 429         if (width == 0)
 430                 height = 0;
 431         else if (height == 0)
 432                 width = 0;
 433         if (width > 0) width += 10;
 434         if (height > 0) height += 10;
 435
 436         if (with_hist)
 437                 {
 438                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 439                 height += HISTOGRAM_HEIGHT + 5;
 440                 }
 441
 442         if (width > 0 && height > 0)
 443                 {
 444                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 445                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 446                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 447                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 448                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 449                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 450                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 451                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 452                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 453                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 454
 455                 if (with_hist)
 456                         {
 457                         gint x = 5;
 458                         gint y = height - HISTOGRAM_HEIGHT - 5;
 459                         gint w = width - 10;
 460
 461                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 462                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 463                         }
 464                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 465                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 466         }
 467
 468         g_object_unref(G_OBJECT(layout));
 469
 470         return pixbuf;
 471 }
 472
 473 /**
 474  * @brief Create non-standard icons for the OSD
 475  * @param flag
 476  * @returns
 477  *
 478  * IMAGE_OSD_COLOR
 479  * \image html image-osd-color.png
 480  * IMAGE_OSD_FIRST
 481  * \image html image-osd-first.png
 482  * IMAGE_OSD_ICON
 483  * \image html image-osd-icon.png
 484  * IMAGE_OSD_LAST
 485  * \image html image-osd-last.png
 486  * IMAGE_OSD_ROTATE_AUTO
 487  * \image html image-osd-rotate-auto.png
 488  *
 489  */
 490 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 491 {
 492         static GdkPixbuf **icons = nullptr;
 493         GdkPixbuf *icon = nullptr;
 494
 495         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 496         if (icons[flag]) return icons[flag];
 497
 498         if (osd_icons[flag].key)
 499                 {
 500                 icon = pixbuf_inline(osd_icons[flag].key);
 501                 }
 502
 503         if (!icon)
 504                 {
 505                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 506                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 507                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 508                 switch (flag)
 509                         {
 510                         case IMAGE_OSD_ROTATE_AUTO:
 511                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 512                                                 0, 0, 0, 255,
 513                                                 3, 0, 3, 0);
 514                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 515                                                      20, 9, 14, 15, 14, 3,
 516                                                      0, 0, 0, 255);
 517                                 break;
 518                         case IMAGE_OSD_ROTATE_USER:
 519                                 break;
 520                         case IMAGE_OSD_COLOR:
 521                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 522                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 523                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 524                                 break;
 525                         case IMAGE_OSD_FIRST:
 526                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 527                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 528                                                      12, 5, 18, 11, 6, 11,
 529                                                      0, 0, 0, 255);
 530                                 break;
 531                         case IMAGE_OSD_LAST:
 532                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 533                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 534                                                      12, 18, 6, 12, 18, 12,
 535                                                      0, 0, 0, 255);
 536                                 break;
 537                         case IMAGE_OSD_ICON:
 538                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 539                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 540                                 break;
 541                         default:
 542                                 break;
 543                         }
 544                 }
 545
 546         icons[flag] = icon;
 547
 548         return icon;
 549 }
 550
 551 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 552                               OverlayRendererFlags flags)
 553 {
 554         return pixbuf_renderer_overlay_add(reinterpret_cast<PixbufRenderer *>(imd->pr), pixbuf, x, y, flags);
 555 }
 556
 557 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 558 {
 559         pixbuf_renderer_overlay_set(reinterpret_cast<PixbufRenderer *>(imd->pr), id, pixbuf, x, y);
 560 }
 561
 562 static void image_overlay_remove(ImageWindow *imd, gint id)
 563 {
 564         pixbuf_renderer_overlay_remove(reinterpret_cast<PixbufRenderer *>(imd->pr), id);
 565 }
 566
 567 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 568 {
 569         GdkPixbuf *pixbuf;
 570
 571         if (osd->icon_id[flag]) return;
 572
 573         pixbuf = image_osd_icon_pixbuf(flag);
 574         if (!pixbuf) return;
 575
 576         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 577                                                osd_icons[flag].x, osd_icons[flag].y,
 578                                                OVL_RELATIVE);
 579 }
 580
 581 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 582 {
 583         if (osd->icon_id[flag])
 584                 {
 585                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 586                 osd->icon_id[flag] = 0;
 587                 }
 588 }
 589
 590 static void image_osd_icons_reset_time(OverlayStateData *osd)
 591 {
 592         gint i;
 593
 594         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 595                 {
 596                 if (osd_icons[i].reset)
 597                         {
 598                         osd->icon_time[i] = 0;
 599                         }
 600                 }
 601 }
 602
 603 static void image_osd_icons_update(OverlayStateData *osd)
 604 {
 605         gint i;
 606
 607         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 608                 {
 609                 if (osd->icon_time[i] > 0)
 610                         {
 611                         image_osd_icon_show(osd, static_cast<ImageOSDFlag>(i));
 612                         }
 613                 else
 614                         {
 615                         image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 616                         }
 617                 }
 618 }
 619
 620 static void image_osd_icons_hide(OverlayStateData *osd)
 621 {
 622         gint i;
 623
 624         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 625                 {
 626                 image_osd_icon_hide(osd, static_cast<ImageOSDFlag>(i));
 627                 }
 628 }
 629
 630 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 631 {
 632         if (osd->ovl_info == 0)
 633                 {
 634                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 635                 }
 636         else
 637                 {
 638                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 639                 }
 640 }
 641
 642 static void image_osd_info_hide(OverlayStateData *osd)
 643 {
 644         if (osd->ovl_info == 0) return;
 645
 646         image_overlay_remove(osd->imd, osd->ovl_info);
 647         osd->ovl_info = 0;
 648 }
 649
 650 static gboolean image_osd_update_cb(gpointer data)
 651 {
 652         auto osd = static_cast<OverlayStateData *>(data);
 653
 654         if (osd->show & OSD_SHOW_INFO)
 655                 {
 656                 /* redraw when the image was changed,
 657                    with histogram we have to redraw also when loading is finished */
 658                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 659                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 660                     osd->notify & NOTIFY_HISTMAP)
 661                         {
 662                         GdkPixbuf *pixbuf;
 663
 664                         pixbuf = image_osd_info_render(osd);
 665                         if (pixbuf)
 666                                 {
 667                                 image_osd_info_show(osd, pixbuf);
 668                                 g_object_unref(pixbuf);
 669                                 }
 670                         else
 671                                 {
 672                                 image_osd_info_hide(osd);
 673                                 }
 674                         }
 675                 }
 676         else
 677                 {
 678                 image_osd_info_hide(osd);
 679                 }
 680
 681         if (osd->show & OSD_SHOW_STATUS)
 682                 {
 683                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 684                         image_osd_icons_reset_time(osd);
 685
 686                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 687                         {
 688                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 689                         image_osd_timer_schedule(osd);
 690                         }
 691
 692                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 693                         {
 694                         gint n = 0;
 695
 696                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 697                                 {
 698                                 n = 1;
 699                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 700                                 }
 701
 702                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 703                         image_osd_timer_schedule(osd);
 704                         }
 705
 706                 image_osd_icons_update(osd);
 707                 }
 708         else
 709                 {
 710                 image_osd_icons_hide(osd);
 711                 }
 712
 713         osd->changed_states = IMAGE_STATE_NONE;
 714         osd->notify = static_cast<NotifyType>(0);
 715         osd->idle_id = 0;
 716         return G_SOURCE_REMOVE;
 717 }
 718
 719 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 720 {
 721         if (force) osd->changed_states = static_cast<ImageState>(osd->changed_states | IMAGE_STATE_IMAGE);
 722
 723         if (!osd->idle_id)
 724                 {
 725                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, nullptr);
 726                 }
 727 }
 728
 729 void image_osd_update(ImageWindow *imd)
 730 {
 731         OverlayStateData *osd = image_get_osd_data(imd);
 732
 733         if (!osd) return;
 734
 735         image_osd_update_schedule(osd, TRUE);
 736 }
 737
 738 static gboolean image_osd_timer_cb(gpointer data)
 739 {
 740         auto osd = static_cast<OverlayStateData *>(data);
 741         gboolean done = TRUE;
 742         gboolean changed = FALSE;
 743         gint i;
 744
 745         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 746                 {
 747                 if (osd->icon_time[i] > 1)
 748                         {
 749                         osd->icon_time[i]--;
 750                         if (osd->icon_time[i] < 2)
 751                                 {
 752                                 osd->icon_time[i] = 0;
 753                                 changed = TRUE;
 754                                 }
 755                         else
 756                                 {
 757                                 done = FALSE;
 758                                 }
 759                         }
 760                 }
 761
 762         if (changed) image_osd_update_schedule(osd, FALSE);
 763
 764         if (done)
 765                 {
 766                 osd->timer_id = 0;
 767                 return FALSE;
 768                 }
 769
 770         return TRUE;
 771 }
 772
 773 static void image_osd_timer_schedule(OverlayStateData *osd)
 774 {
 775         if (!osd->timer_id)
 776                 {
 777                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 778                 }
 779 }
 780
 781 static void image_osd_state_cb(ImageWindow *, ImageState state, gpointer data)
 782 {
 783         auto osd = static_cast<OverlayStateData *>(data);
 784
 785         osd->changed_states = static_cast<ImageState>(osd->changed_states | state);
 786         image_osd_update_schedule(osd, FALSE);
 787 }
 788
 789 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 790 {
 791         auto osd = static_cast<OverlayStateData *>(data);
 792
 793         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 794                 {
 795                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 796                 osd->notify = static_cast<NotifyType>(osd->notify | type);
 797                 image_osd_update_schedule(osd, FALSE);
 798                 }
 799 }
 800
 801
 802 static void image_osd_free(OverlayStateData *osd)
 803 {
 804         if (!osd) return;
 805
 806         if (osd->idle_id) g_source_remove(osd->idle_id);
 807         if (osd->timer_id) g_source_remove(osd->timer_id);
 808
 809         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 810
 811         if (osd->imd)
 812                 {
 813                 image_set_osd_data(osd->imd, nullptr);
 814                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 815
 816                 image_set_state_func(osd->imd, nullptr, nullptr);
 817
 818                 image_osd_info_hide(osd);
 819                 image_osd_icons_hide(osd);
 820                 }
 821
 822         if (osd->histogram) histogram_free(osd->histogram);
 823
 824         g_free(osd);
 825 }
 826
 827 static void image_osd_destroy_cb(GtkWidget *, gpointer data)
 828 {
 829         auto osd = static_cast<OverlayStateData *>(data);
 830
 831         osd->imd = nullptr;
 832         image_osd_free(osd);
 833 }
 834
 835 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 836 {
 837         OverlayStateData *osd = image_get_osd_data(imd);
 838
 839         if (!osd)
 840                 {
 841                 osd = g_new0(OverlayStateData, 1);
 842                 osd->imd = imd;
 843                 osd->show = OSD_SHOW_NOTHING;
 844                 osd->x = options->image_overlay.x;
 845                 osd->y = options->image_overlay.y;
 846                 osd->origin = OVL_RELATIVE;
 847
 848                 osd->histogram = histogram_new();
 849
 850                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 851                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 852                 image_set_osd_data(imd, osd);
 853
 854                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 855                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 856                 }
 857
 858         if (show & OSD_SHOW_STATUS)
 859                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 860
 861         if (show != osd->show)
 862                 image_osd_update_schedule(osd, TRUE);
 863
 864         osd->show = show;
 865 }
 866
 867 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 868 {
 869         if (!imd) return;
 870
 871         image_osd_enable(imd, show);
 872 }
 873
 874 OsdShowFlags image_osd_get(ImageWindow *imd)
 875 {
 876         OverlayStateData *osd = image_get_osd_data(imd);
 877
 878         return osd ? osd->show : OSD_SHOW_NOTHING;
 879 }
 880
 881 Histogram *image_osd_get_histogram(ImageWindow *imd)
 882 {
 883         OverlayStateData *osd = image_get_osd_data(imd);
 884
 885         return osd ? osd->histogram : nullptr;
 886 }
 887
 888 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 889 {
 890         Histogram *h_src;
 891         Histogram *h_dest;
 892         image_osd_set(dest, image_osd_get(src));
 893
 894         h_src = image_osd_get_histogram(src);
 895         h_dest = image_osd_get_histogram(dest);
 896
 897         h_dest->histogram_mode = h_src->histogram_mode;
 898         h_dest->histogram_channel = h_src->histogram_channel;
 899
 900 }
 901
 902 /* duration:
 903     0 = hide
 904     1 = show
 905    2+ = show for duration tenths of a second
 906    -1 = use default duration
 907  */
 908 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 909 {
 910         OverlayStateData *osd = image_get_osd_data(imd);
 911
 912         if (!osd) return;
 913
 914         if (flag >= IMAGE_OSD_COUNT) return;
 915         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 916         if (duration > 1) duration += 1;
 917
 918         osd->icon_time[flag] = duration;
 919
 920         image_osd_update_schedule(osd, FALSE);
 921         image_osd_timer_schedule(osd);
 922 }
 923 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */