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