src/image-overlay.c

   1 /*
   2  * Copyright (C) 2006 John Ellis
   3  * Copyright (C) 2008 - 2016 The Geeqie Team
   4  *
   5  * Author: John Ellis
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  */
  21
  22 #include "main.h"
  23 #include "image-overlay.h"
  24
  25 #include "filedata.h"
  26 #include "histogram.h"
  27 #include "image.h"
  28 #include "img-view.h"
  29 #include "layout.h"
  30 #include "osd.h"
  31 #include "pixbuf-renderer.h"
  32 #include "pixbuf_util.h"
  33 #include "ui_fileops.h"
  34 #include "image-load.h"
  35
  36 /*
  37  *----------------------------------------------------------------------------
  38  * image overlay
  39  *----------------------------------------------------------------------------
  40  */
  41
  42
  43 typedef struct _OverlayStateData OverlayStateData;
  44 struct _OverlayStateData {
  45         ImageWindow *imd;
  46         ImageState changed_states;
  47         NotifyType notify;
  48
  49         Histogram *histogram;
  50
  51         OsdShowFlags show;
  52         OverlayRendererFlags origin;
  53
  54         gint ovl_info;
  55
  56         gint x;
  57         gint y;
  58
  59         gint icon_time[IMAGE_OSD_COUNT];
  60         gint icon_id[IMAGE_OSD_COUNT];
  61
  62         guint idle_id; /* event source id */
  63         guint timer_id; /* event source id */
  64         gulong destroy_id;
  65 };
  66
  67
  68 typedef struct _OSDIcon OSDIcon;
  69 struct _OSDIcon {
  70         gboolean reset; /* reset on new image */
  71         gint x;         /* x, y offset */
  72         gint y;
  73         gchar *key;     /* inline pixbuf */
  74 };
  75
  76 static OSDIcon osd_icons[] = {
  77         {  TRUE,   0,   0, NULL },                      /* none */
  78         {  TRUE, -10, -10, NULL },                      /* auto rotated */
  79         {  TRUE, -10, -10, NULL },                      /* user rotated */
  80         {  TRUE, -40, -10, NULL },                      /* color embedded */
  81         {  TRUE, -70, -10, NULL },                      /* first image */
  82         {  TRUE, -70, -10, NULL },                      /* last image */
  83         { FALSE, -70, -10, NULL },                      /* osd enabled */
  84         { FALSE, 0, 0, NULL }
  85 };
  86
  87 #define OSD_DATA "overlay-data"
  88
  89 #define IMAGE_OSD_DEFAULT_DURATION 30
  90
  91 #define HISTOGRAM_HEIGHT 140
  92 #define HISTOGRAM_WIDTH  256
  93
  94 static void image_osd_timer_schedule(OverlayStateData *osd);
  95
  96 void set_image_overlay_template_string(gchar **template_string, const gchar *value)
  97 {
  98         g_assert(template_string);
  99
 100         g_free(*template_string);
 101         *template_string = g_strdup(value);
 102 }
 103
 104
 105 void set_default_image_overlay_template_string(gchar **template_string)
 106 {
 107         set_image_overlay_template_string(template_string, DEFAULT_OVERLAY_INFO);
 108 }
 109
 110 void set_image_overlay_font_string(gchar **font_string, const gchar *value)
 111 {
 112         g_assert(font_string);
 113
 114         g_free(*font_string);
 115         *font_string = g_strdup(value);
 116 }
 117
 118 static OverlayStateData *image_get_osd_data(ImageWindow *imd)
 119 {
 120         OverlayStateData *osd;
 121
 122         if (!imd) return NULL;
 123
 124         g_assert(imd->pr);
 125
 126         osd = g_object_get_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA");
 127         return osd;
 128 }
 129
 130 static void image_set_osd_data(ImageWindow *imd, OverlayStateData *osd)
 131 {
 132         g_assert(imd);
 133         g_assert(imd->pr);
 134         g_object_set_data(G_OBJECT(imd->pr), "IMAGE_OVERLAY_DATA", osd);
 135 }
 136
 137 /*
 138  *----------------------------------------------------------------------------
 139  * image histogram
 140  *----------------------------------------------------------------------------
 141  */
 142
 143
 144 void image_osd_histogram_toggle_channel(ImageWindow *imd)
 145 {
 146         OverlayStateData *osd = image_get_osd_data(imd);
 147
 148         if (!osd || !osd->histogram) return;
 149
 150         histogram_toggle_channel(osd->histogram);
 151         image_osd_update(imd);
 152 }
 153
 154 void image_osd_histogram_toggle_mode(ImageWindow *imd)
 155 {
 156         OverlayStateData *osd = image_get_osd_data(imd);
 157
 158         if (!osd || !osd->histogram) return;
 159
 160         histogram_toggle_mode(osd->histogram);
 161         image_osd_update(imd);
 162 }
 163
 164 void image_osd_histogram_set_channel(ImageWindow *imd, gint chan)
 165 {
 166         OverlayStateData *osd = image_get_osd_data(imd);
 167
 168         if (!osd || !osd->histogram) return;
 169
 170         histogram_set_channel(osd->histogram, chan);
 171         image_osd_update(imd);
 172 }
 173
 174 void image_osd_histogram_set_mode(ImageWindow *imd, gint mode)
 175 {
 176         OverlayStateData *osd = image_get_osd_data(imd);
 177
 178         if (!osd || !osd->histogram) return;
 179
 180         histogram_set_mode(osd->histogram, mode);
 181         image_osd_update(imd);
 182 }
 183
 184 gint image_osd_histogram_get_channel(ImageWindow *imd)
 185 {
 186         OverlayStateData *osd = image_get_osd_data(imd);
 187
 188         if (!osd || !osd->histogram) return HCHAN_DEFAULT;
 189
 190         return histogram_get_channel(osd->histogram);
 191 }
 192
 193 gint image_osd_histogram_get_mode(ImageWindow *imd)
 194 {
 195         OverlayStateData *osd = image_get_osd_data(imd);
 196
 197         if (!osd || !osd->histogram) return 0;
 198
 199         return histogram_get_mode(osd->histogram);
 200 }
 201
 202 void image_osd_toggle(ImageWindow *imd)
 203 {
 204         OsdShowFlags show;
 205
 206         if (!imd) return;
 207
 208         show = image_osd_get(imd);
 209         if (show == OSD_SHOW_NOTHING)
 210                 {
 211                 image_osd_set(imd, OSD_SHOW_INFO | OSD_SHOW_STATUS);
 212                 return;
 213                 }
 214         else
 215                 {
 216                 if (show & OSD_SHOW_GUIDELINES)
 217                         {
 218                         image_osd_set(imd, OSD_SHOW_NOTHING);
 219                         }
 220                 else if (show & OSD_SHOW_HISTOGRAM)
 221                         {
 222                         image_osd_set(imd, OSD_SHOW_GUIDELINES);
 223                         image_osd_set(imd, show | ~OSD_SHOW_HISTOGRAM);
 224                         }
 225                 else
 226                         {
 227                         image_osd_set(imd, show | OSD_SHOW_HISTOGRAM);
 228                         }
 229                 }
 230 }
 231
 232 static GdkPixbuf *image_osd_info_render(OverlayStateData *osd)
 233 {
 234         GdkPixbuf *pixbuf = NULL;
 235         gint width, height;
 236         PangoLayout *layout;
 237         const gchar *name;
 238         gchar *text;
 239         gboolean with_hist;
 240         const HistMap *histmap = NULL;
 241         ImageWindow *imd = osd->imd;
 242         FileData *fd = image_get_fd(imd);
 243         PangoFontDescription *font_desc;
 244
 245         if (!fd) return NULL;
 246
 247         name = image_get_name(imd);
 248         if (name)
 249                 {
 250                 gint n, t;
 251                 CollectionData *cd;
 252                 CollectInfo *info;
 253                 GHashTable *vars;
 254
 255                 vars = g_hash_table_new_full(g_str_hash, g_str_equal, NULL, g_free);
 256
 257                 cd = image_get_collection(imd, &info);
 258                 if (cd)
 259                         {
 260                         t = g_list_length(cd->list);
 261                         n = g_list_index(cd->list, info) + 1;
 262                         if (cd->name)
 263                                 {
 264                                 if (file_extension_match(cd->name, GQ_COLLECTION_EXT))
 265                                         osd_template_insert(vars, "collection", remove_extension_from_path(cd->name), OSDT_FREE);
 266                                 else
 267                                         osd_template_insert(vars, "collection", cd->name, OSDT_NONE);
 268                                 }
 269                         else
 270                                 {
 271                                 osd_template_insert(vars, "collection", _("Untitled"), OSDT_NONE);
 272                                 }
 273                         }
 274                 else
 275                         {
 276                         LayoutWindow *lw = layout_find_by_image(imd);
 277                         if (lw)
 278                                 {
 279                                 if (lw->slideshow)
 280                                         {
 281                                         n = g_list_length(lw->slideshow->list_done);
 282                                         t = n + g_list_length(lw->slideshow->list);
 283                                         if (n == 0) n = t;
 284                                         }
 285                                 else
 286                                         {
 287                                         t = layout_list_count(lw, NULL);
 288                                         n = layout_list_get_index(lw, image_get_fd(lw->image)) + 1;
 289                                         }
 290                                 }
 291                         else if (view_window_find_image(imd, &n, &t))
 292                                 {
 293                                 n++;
 294                                 }
 295                         else
 296                                 {
 297                                 t = 1;
 298                                 n = 1;
 299                                 }
 300
 301                         if (n < 1) n = 1;
 302                         if (t < 1) t = 1;
 303
 304                         osd_template_insert(vars, "collection", NULL, OSDT_NONE);
 305                         }
 306
 307                 osd_template_insert(vars, "number", g_strdup_printf("%d", n), OSDT_NO_DUP);
 308                 osd_template_insert(vars, "total", g_strdup_printf("%d", t), OSDT_NO_DUP);
 309                 osd_template_insert(vars, "name", (gchar *) name, OSDT_NONE);
 310                 osd_template_insert(vars, "path", (gchar *) image_get_path(imd), OSDT_NONE);
 311                 osd_template_insert(vars, "date", imd->image_fd ? ((gchar *) text_from_time(imd->image_fd->date)) : "", OSDT_NONE);
 312                 osd_template_insert(vars, "size", imd->image_fd ? (text_from_size_abrev(imd->image_fd->size)) : g_strdup(""), OSDT_FREE);
 313                 osd_template_insert(vars, "zoom", image_zoom_get_as_text(imd), OSDT_FREE);
 314
 315                 if (!imd->unknown)
 316                         {
 317                         gint w, h;
 318                         GdkPixbuf *load_pixbuf = image_loader_get_pixbuf(imd->il);
 319
 320                         if (imd->delay_flip &&
 321                             imd->il && load_pixbuf &&
 322                             image_get_pixbuf(imd) != load_pixbuf)
 323                                 {
 324                                 w = gdk_pixbuf_get_width(load_pixbuf);
 325                                 h = gdk_pixbuf_get_height(load_pixbuf);
 326                                 }
 327                         else
 328                                 {
 329                                 image_get_image_size(imd, &w, &h);
 330                                 }
 331
 332
 333                         osd_template_insert(vars, "width", g_strdup_printf("%d", w), OSDT_NO_DUP);
 334                         osd_template_insert(vars, "height", g_strdup_printf("%d", h), OSDT_NO_DUP);
 335                         osd_template_insert(vars, "res", g_strdup_printf("%d × %d", w, h), OSDT_FREE);
 336                         }
 337                 else
 338                         {
 339                         osd_template_insert(vars, "width", NULL, OSDT_NONE);
 340                         osd_template_insert(vars, "height", NULL, OSDT_NONE);
 341                         osd_template_insert(vars, "res", NULL, OSDT_NONE);
 342                         }
 343
 344                 text = image_osd_mkinfo(options->image_overlay.template_string, imd->image_fd, vars);
 345                 g_hash_table_destroy(vars);
 346
 347         } else {
 348                 /* When does this occur ?? */
 349                 text = g_markup_escape_text(_("Untitled"), -1);
 350         }
 351
 352         with_hist = ((osd->show & OSD_SHOW_HISTOGRAM) && osd->histogram);
 353         if (with_hist)
 354                 {
 355                 histmap = histmap_get(imd->image_fd);
 356                 if (!histmap)
 357                         {
 358                         histmap_start_idle(imd->image_fd);
 359                         with_hist = FALSE;
 360                         }
 361                 }
 362
 363
 364         {
 365                 gint active_marks = 0;
 366                 gint mark;
 367                 gchar *text2;
 368
 369                 for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 370                         {
 371                         active_marks += file_data_get_mark(fd, mark);
 372                         }
 373
 374                 if (active_marks > 0)
 375                         {
 376                         GString *buf = g_string_sized_new(FILEDATA_MARKS_SIZE * 2);
 377
 378                         for (mark = 0; mark < FILEDATA_MARKS_SIZE; mark++)
 379                                 {
 380                                 g_string_append_printf(buf, file_data_get_mark(fd, mark) ? " <span background='#FF00FF'>%c</span>" : " %c", '1' + (mark < 9 ? mark : -1) );
 381                                 }
 382
 383                         if (*text)
 384                                 text2 = g_strdup_printf("%s\n%s", text, buf->str);
 385                         else
 386                                 text2 = g_strdup(buf->str);
 387                         g_string_free(buf, TRUE);
 388                         g_free(text);
 389                         text = text2;
 390                         }
 391
 392                 if (with_hist)
 393                         {
 394                         gchar *escaped_histogram_label = g_markup_escape_text(histogram_label(osd->histogram), -1);
 395                         if (*text)
 396                                 text2 = g_strdup_printf("%s\n%s", text, escaped_histogram_label);
 397                         else
 398                                 text2 = g_strdup(escaped_histogram_label);
 399                         g_free(escaped_histogram_label);
 400                         g_free(text);
 401                         text = text2;
 402                         }
 403         }
 404
 405         font_desc = pango_font_description_from_string(options->image_overlay.font);
 406         layout = gtk_widget_create_pango_layout(imd->pr, NULL);
 407         pango_layout_set_font_description(layout, font_desc);
 408
 409         pango_layout_set_markup(layout, text, -1);
 410         g_free(text);
 411
 412         pango_layout_get_pixel_size(layout, &width, &height);
 413         /* with empty text width is set to 0, but not height) */
 414         if (width == 0)
 415                 height = 0;
 416         else if (height == 0)
 417                 width = 0;
 418         if (width > 0) width += 10;
 419         if (height > 0) height += 10;
 420
 421         if (with_hist)
 422                 {
 423                 if (width < HISTOGRAM_WIDTH + 10) width = HISTOGRAM_WIDTH + 10;
 424                 height += HISTOGRAM_HEIGHT + 5;
 425                 }
 426
 427         if (width > 0 && height > 0)
 428                 {
 429                 pixbuf = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 430                 pixbuf_set_rect_fill(pixbuf, 3, 3, width-6, height-6, options->image_overlay.background_red, options->image_overlay.background_green,
 431                                                                                                                         options->image_overlay.background_blue, options->image_overlay.background_alpha);
 432                 pixbuf_set_rect(pixbuf, 0, 0, width, height, 240, 240, 240, 80, 1, 1, 1, 1);
 433                 pixbuf_set_rect(pixbuf, 1, 1, width-2, height-2, 240, 240, 240, 130, 1, 1, 1, 1);
 434                 pixbuf_set_rect(pixbuf, 2, 2, width-4, height-4, 240, 240, 240, 180, 1, 1, 1, 1);
 435                 pixbuf_pixel_set(pixbuf, 0, 0, 0, 0, 0, 0);
 436                 pixbuf_pixel_set(pixbuf, width - 1, 0, 0, 0, 0, 0);
 437                 pixbuf_pixel_set(pixbuf, 0, height - 1, 0, 0, 0, 0);
 438                 pixbuf_pixel_set(pixbuf, width - 1, height - 1, 0, 0, 0, 0);
 439
 440                 if (with_hist)
 441                         {
 442                         gint x = 5;
 443                         gint y = height - HISTOGRAM_HEIGHT - 5;
 444                         gint w = width - 10;
 445
 446                         pixbuf_set_rect_fill(pixbuf, x, y, w, HISTOGRAM_HEIGHT, 220, 220, 220, 210);
 447                         histogram_draw(osd->histogram, histmap, pixbuf, x, y, w, HISTOGRAM_HEIGHT);
 448                         }
 449                 pixbuf_draw_layout(pixbuf, layout, imd->pr, 5, 5, options->image_overlay.text_red, options->image_overlay.text_green,
 450                                                                                                                         options->image_overlay.text_blue, options->image_overlay.text_alpha);
 451         }
 452
 453         g_object_unref(G_OBJECT(layout));
 454
 455         return pixbuf;
 456 }
 457
 458 static GdkPixbuf *image_osd_icon_pixbuf(ImageOSDFlag flag)
 459 {
 460         static GdkPixbuf **icons = NULL;
 461         GdkPixbuf *icon = NULL;
 462
 463         if (!icons) icons = g_new0(GdkPixbuf *, IMAGE_OSD_COUNT);
 464         if (icons[flag]) return icons[flag];
 465
 466         if (osd_icons[flag].key)
 467                 {
 468                 icon = pixbuf_inline(osd_icons[flag].key);
 469                 }
 470
 471         if (!icon)
 472                 {
 473                 icon = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, 24, 24);
 474                 pixbuf_set_rect_fill(icon, 1, 1, 22, 22, 255, 255, 255, 200);
 475                 pixbuf_set_rect(icon, 0, 0, 24, 24, 0, 0, 0, 128, 1, 1, 1, 1);
 476                 switch (flag)
 477                         {
 478                         case IMAGE_OSD_ROTATE_AUTO:
 479                                 pixbuf_set_rect(icon, 3, 8, 11, 12,
 480                                                 0, 0, 0, 255,
 481                                                 3, 0, 3, 0);
 482                                 pixbuf_draw_triangle(icon, 14, 3, 6, 12,
 483                                                      20, 9, 14, 15, 14, 3,
 484                                                      0, 0, 0, 255);
 485                                 break;
 486                         case IMAGE_OSD_ROTATE_USER:
 487                                 break;
 488                         case IMAGE_OSD_COLOR:
 489                                 pixbuf_set_rect_fill(icon, 3, 3, 18, 6, 200, 0, 0, 255);
 490                                 pixbuf_set_rect_fill(icon, 3, 9, 18, 6, 0, 200, 0, 255);
 491                                 pixbuf_set_rect_fill(icon, 3, 15, 18, 6, 0, 0, 200, 255);
 492                                 break;
 493                         case IMAGE_OSD_FIRST:
 494                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 3, 0);
 495                                 pixbuf_draw_triangle(icon, 6, 5, 12, 6,
 496                                                      12, 5, 18, 11, 6, 11,
 497                                                      0, 0, 0, 255);
 498                                 break;
 499                         case IMAGE_OSD_LAST:
 500                                 pixbuf_set_rect(icon, 3, 3, 18, 18, 0, 0, 0, 200, 3, 3, 0, 3);
 501                                 pixbuf_draw_triangle(icon, 6, 12, 12, 6,
 502                                                      12, 18, 6, 12, 18, 12,
 503                                                      0, 0, 0, 255);
 504                                 break;
 505                         case IMAGE_OSD_ICON:
 506                                 pixbuf_set_rect_fill(icon, 11, 3, 3, 12, 0, 0, 0, 255);
 507                                 pixbuf_set_rect_fill(icon, 11, 17, 3, 3, 0, 0, 0, 255);
 508                                 break;
 509                         default:
 510                                 break;
 511                         }
 512                 }
 513
 514         icons[flag] = icon;
 515
 516         return icon;
 517 }
 518
 519 static GdkPixbuf *image_osd_guidelines_render(OverlayStateData *osd)
 520 {
 521         gint width, height;
 522         GdkPixbuf *rectangles;
 523         ImageWindow *imd = osd->imd;
 524
 525         pixbuf_renderer_get_scaled_size((PixbufRenderer *)imd->pr, &width, &height);
 526
 527         if (width && height)
 528                 {
 529                 rectangles = gdk_pixbuf_new(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
 530                 if (rectangles)
 531                         {
 532                         pixbuf_set_rect_fill(rectangles, 0, 0, width, height, 255, 255, 255, 0);
 533                         pixbuf_set_rect(rectangles, 0, 0 + (height / 3), width, height / 3,
 534                                                                 0, 0, 0, 255,
 535                                                                 1, 1, 1, 1);
 536                         pixbuf_set_rect(rectangles, 0, 0 + (height / 3 + 1), width, height / 3 - 2,
 537                                                                 255, 255, 255, 255,
 538                                                                 1, 1, 1, 1);
 539
 540                         pixbuf_set_rect(rectangles, 0 + width / 3, 0 , width / 3, height,
 541                                                                 0, 0, 0, 255,
 542                                                                 1, 1, 1, 1);
 543                         pixbuf_set_rect(rectangles, 0 + width / 3 + 1, 0, width / 3 - 2, height,
 544                                                                 255, 255, 255, 255,
 545                                                                 1, 1, 1, 1);
 546                         return rectangles;
 547                         }
 548                 }
 549
 550         return NULL;
 551 }
 552
 553 static gint image_overlay_add(ImageWindow *imd, GdkPixbuf *pixbuf, gint x, gint y,
 554                               OverlayRendererFlags flags)
 555 {
 556         return pixbuf_renderer_overlay_add((PixbufRenderer *)imd->pr, pixbuf, x, y, flags);
 557 }
 558
 559 static void image_overlay_set(ImageWindow *imd, gint id, GdkPixbuf *pixbuf, gint x, gint y)
 560 {
 561         pixbuf_renderer_overlay_set((PixbufRenderer *)imd->pr, id, pixbuf, x, y);
 562 }
 563
 564 static void image_overlay_remove(ImageWindow *imd, gint id)
 565 {
 566         pixbuf_renderer_overlay_remove((PixbufRenderer *)imd->pr, id);
 567 }
 568
 569 static void image_osd_icon_show(OverlayStateData *osd, ImageOSDFlag flag)
 570 {
 571         GdkPixbuf *pixbuf;
 572
 573         if (osd->icon_id[flag]) return;
 574
 575         pixbuf = image_osd_icon_pixbuf(flag);
 576         if (!pixbuf) return;
 577
 578         osd->icon_id[flag] = image_overlay_add(osd->imd, pixbuf,
 579                                                osd_icons[flag].x, osd_icons[flag].y,
 580                                                OVL_RELATIVE);
 581 }
 582
 583 static void image_osd_icon_hide(OverlayStateData *osd, ImageOSDFlag flag)
 584 {
 585         if (osd->icon_id[flag])
 586                 {
 587                 image_overlay_remove(osd->imd, osd->icon_id[flag]);
 588                 osd->icon_id[flag] = 0;
 589                 }
 590 }
 591
 592 static void image_osd_icons_reset_time(OverlayStateData *osd)
 593 {
 594         gint i;
 595
 596         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 597                 {
 598                 if (osd_icons[i].reset)
 599                         {
 600                         osd->icon_time[i] = 0;
 601                         }
 602                 }
 603 }
 604
 605 static void image_osd_icons_update(OverlayStateData *osd)
 606 {
 607         gint i;
 608
 609         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 610                 {
 611                 if (osd->icon_time[i] > 0)
 612                         {
 613                         image_osd_icon_show(osd, i);
 614                         }
 615                 else
 616                         {
 617                         image_osd_icon_hide(osd, i);
 618                         }
 619                 }
 620 }
 621
 622 static void image_osd_icons_hide(OverlayStateData *osd)
 623 {
 624         gint i;
 625
 626         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 627                 {
 628                 image_osd_icon_hide(osd, i);
 629                 }
 630 }
 631
 632 static void image_osd_info_show(OverlayStateData *osd, GdkPixbuf *pixbuf)
 633 {
 634         if (osd->ovl_info == 0)
 635                 {
 636                 osd->ovl_info = image_overlay_add(osd->imd, pixbuf, osd->x, osd->y, osd->origin);
 637                 }
 638         else
 639                 {
 640                 image_overlay_set(osd->imd, osd->ovl_info, pixbuf, osd->x, osd->y);
 641                 }
 642 }
 643
 644 static void image_osd_info_hide(OverlayStateData *osd)
 645 {
 646         if (osd->ovl_info == 0) return;
 647
 648         image_overlay_remove(osd->imd, osd->ovl_info);
 649         osd->ovl_info = 0;
 650 }
 651
 652 static gboolean image_osd_update_cb(gpointer data)
 653 {
 654         OverlayStateData *osd = data;
 655
 656         if (osd->show & OSD_SHOW_INFO)
 657                 {
 658                 /* redraw when the image was changed,
 659                    with histogram we have to redraw also when loading is finished */
 660                 if (osd->changed_states & IMAGE_STATE_IMAGE ||
 661                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_HISTOGRAM) ||
 662                     (osd->changed_states & IMAGE_STATE_LOADING && osd->show & OSD_SHOW_GUIDELINES) ||
 663                     osd->notify & NOTIFY_HISTMAP)
 664                         {
 665                         GdkPixbuf *pixbuf;
 666
 667                         if (osd->show & OSD_SHOW_GUIDELINES)
 668                                 {
 669                                 ImageWindow *imd = osd->imd;
 670                                 osd->x = ((PixbufRenderer *)imd->pr)->x_offset;
 671                                 osd->y = ((PixbufRenderer *)imd->pr)->y_offset;
 672                                 osd->origin = OVL_NORMAL;
 673
 674                                 pixbuf = image_osd_guidelines_render(osd);
 675                                 if (pixbuf)
 676                                         {
 677                                         image_osd_info_show(osd, pixbuf);
 678                                         g_object_unref(pixbuf);
 679                                         }
 680
 681                                 osd->x = options->image_overlay.x;
 682                                 osd->y = options->image_overlay.y;
 683                                 osd->origin = OVL_RELATIVE;
 684                                 }
 685                         else
 686                                 {
 687                                 pixbuf = image_osd_info_render(osd);
 688                                 if (pixbuf)
 689                                         {
 690                                         image_osd_info_show(osd, pixbuf);
 691                                         g_object_unref(pixbuf);
 692                                         }
 693                                 else
 694                                         {
 695                                         image_osd_info_hide(osd);
 696                                         }
 697                                 }
 698                         }
 699                 }
 700         else
 701                 {
 702                 image_osd_info_hide(osd);
 703                 }
 704
 705         if (osd->show & OSD_SHOW_STATUS)
 706                 {
 707                 if (osd->changed_states & IMAGE_STATE_IMAGE)
 708                         image_osd_icons_reset_time(osd);
 709
 710                 if (osd->changed_states & IMAGE_STATE_COLOR_ADJ)
 711                         {
 712                         osd->icon_time[IMAGE_OSD_COLOR] = IMAGE_OSD_DEFAULT_DURATION + 1;
 713                         image_osd_timer_schedule(osd);
 714                         }
 715
 716                 if (osd->changed_states & IMAGE_STATE_ROTATE_AUTO)
 717                         {
 718                         gint n = 0;
 719
 720                         if (osd->imd->state & IMAGE_STATE_ROTATE_AUTO)
 721                                 {
 722                                 n = 1;
 723                                 if (!osd->imd->cm) n += IMAGE_OSD_DEFAULT_DURATION;
 724                                 }
 725
 726                         osd->icon_time[IMAGE_OSD_ROTATE_AUTO] = n;
 727                         image_osd_timer_schedule(osd);
 728                         }
 729
 730                 image_osd_icons_update(osd);
 731                 }
 732         else
 733                 {
 734                 image_osd_icons_hide(osd);
 735                 }
 736
 737         osd->changed_states = IMAGE_STATE_NONE;
 738         osd->notify = 0;
 739         osd->idle_id = 0;
 740         return FALSE;
 741 }
 742
 743 static void image_osd_update_schedule(OverlayStateData *osd, gboolean force)
 744 {
 745         if (force) osd->changed_states |= IMAGE_STATE_IMAGE;
 746
 747         if (!osd->idle_id)
 748                 {
 749                 osd->idle_id = g_idle_add_full(G_PRIORITY_HIGH, image_osd_update_cb, osd, NULL);
 750                 }
 751 }
 752
 753 void image_osd_update(ImageWindow *imd)
 754 {
 755         OverlayStateData *osd = image_get_osd_data(imd);
 756
 757         if (!osd) return;
 758
 759         image_osd_update_schedule(osd, TRUE);
 760 }
 761
 762 static gboolean image_osd_timer_cb(gpointer data)
 763 {
 764         OverlayStateData *osd = data;
 765         gboolean done = TRUE;
 766         gboolean changed = FALSE;
 767         gint i;
 768
 769         for (i = 0; i < IMAGE_OSD_COUNT; i++)
 770                 {
 771                 if (osd->icon_time[i] > 1)
 772                         {
 773                         osd->icon_time[i]--;
 774                         if (osd->icon_time[i] < 2)
 775                                 {
 776                                 osd->icon_time[i] = 0;
 777                                 changed = TRUE;
 778                                 }
 779                         else
 780                                 {
 781                                 done = FALSE;
 782                                 }
 783                         }
 784                 }
 785
 786         if (changed) image_osd_update_schedule(osd, FALSE);
 787
 788         if (done)
 789                 {
 790                 osd->timer_id = 0;
 791                 return FALSE;
 792                 }
 793
 794         return TRUE;
 795 }
 796
 797 static void image_osd_timer_schedule(OverlayStateData *osd)
 798 {
 799         if (!osd->timer_id)
 800                 {
 801                 osd->timer_id = g_timeout_add(100, image_osd_timer_cb, osd);
 802                 }
 803 }
 804
 805 static void image_osd_state_cb(ImageWindow *imd, ImageState state, gpointer data)
 806 {
 807         OverlayStateData *osd = data;
 808
 809         osd->changed_states |= state;
 810         image_osd_update_schedule(osd, FALSE);
 811 }
 812
 813 static void image_osd_notify_cb(FileData *fd, NotifyType type, gpointer data)
 814 {
 815         OverlayStateData *osd = data;
 816
 817         if ((type & (NOTIFY_HISTMAP)) && osd->imd && fd == osd->imd->image_fd)
 818                 {
 819                 DEBUG_1("Notify osd: %s %04x", fd->path, type);
 820                 osd->notify |= type;
 821                 image_osd_update_schedule(osd, FALSE);
 822                 }
 823 }
 824
 825
 826 static void image_osd_free(OverlayStateData *osd)
 827 {
 828         if (!osd) return;
 829
 830         if (osd->idle_id) g_source_remove(osd->idle_id);
 831         if (osd->timer_id) g_source_remove(osd->timer_id);
 832
 833         file_data_unregister_notify_func(image_osd_notify_cb, osd);
 834
 835         if (osd->imd)
 836                 {
 837                 image_set_osd_data(osd->imd, NULL);
 838                 g_signal_handler_disconnect(osd->imd->pr, osd->destroy_id);
 839
 840                 image_set_state_func(osd->imd, NULL, NULL);
 841
 842                 image_osd_info_hide(osd);
 843                 image_osd_icons_hide(osd);
 844                 }
 845
 846         if (osd->histogram) histogram_free(osd->histogram);
 847
 848         g_free(osd);
 849 }
 850
 851 static void image_osd_destroy_cb(GtkWidget *widget, gpointer data)
 852 {
 853         OverlayStateData *osd = data;
 854
 855         osd->imd = NULL;
 856         image_osd_free(osd);
 857 }
 858
 859 static void image_osd_enable(ImageWindow *imd, OsdShowFlags show)
 860 {
 861         OverlayStateData *osd = image_get_osd_data(imd);
 862
 863         if (!osd)
 864                 {
 865                 osd = g_new0(OverlayStateData, 1);
 866                 osd->imd = imd;
 867                 osd->show = OSD_SHOW_NOTHING;
 868                 osd->x = options->image_overlay.x;
 869                 osd->y = options->image_overlay.y;
 870                 osd->origin = OVL_RELATIVE;
 871
 872                 osd->histogram = histogram_new();
 873
 874                 osd->destroy_id = g_signal_connect(G_OBJECT(imd->pr), "destroy",
 875                                                    G_CALLBACK(image_osd_destroy_cb), osd);
 876                 image_set_osd_data(imd, osd);
 877
 878                 image_set_state_func(osd->imd, image_osd_state_cb, osd);
 879                 file_data_register_notify_func(image_osd_notify_cb, osd, NOTIFY_PRIORITY_LOW);
 880                 }
 881
 882         if (show & OSD_SHOW_STATUS)
 883                 image_osd_icon(imd, IMAGE_OSD_ICON, -1);
 884
 885         if (show != osd->show)
 886                 image_osd_update_schedule(osd, TRUE);
 887
 888         osd->show = show;
 889 }
 890
 891 void image_osd_set(ImageWindow *imd, OsdShowFlags show)
 892 {
 893         if (!imd) return;
 894
 895         image_osd_enable(imd, show);
 896 }
 897
 898 OsdShowFlags image_osd_get(ImageWindow *imd)
 899 {
 900         OverlayStateData *osd = image_get_osd_data(imd);
 901
 902         return osd ? osd->show : OSD_SHOW_NOTHING;
 903 }
 904
 905 Histogram *image_osd_get_histogram(ImageWindow *imd)
 906 {
 907         OverlayStateData *osd = image_get_osd_data(imd);
 908
 909         return osd ? osd->histogram : NULL;
 910 }
 911
 912 void image_osd_copy_status(ImageWindow *src, ImageWindow *dest)
 913 {
 914         Histogram *h_src, *h_dest;
 915         image_osd_set(dest, image_osd_get(src));
 916
 917         h_src = image_osd_get_histogram(src);
 918         h_dest = image_osd_get_histogram(dest);
 919
 920         h_dest->histogram_mode = h_src->histogram_mode;
 921         h_dest->histogram_channel = h_src->histogram_channel;
 922
 923 }
 924
 925 /* duration:
 926     0 = hide
 927     1 = show
 928    2+ = show for duration tenths of a second
 929    -1 = use default duration
 930  */
 931 void image_osd_icon(ImageWindow *imd, ImageOSDFlag flag, gint duration)
 932 {
 933         OverlayStateData *osd = image_get_osd_data(imd);
 934
 935         if (!osd) return;
 936
 937         if (flag >= IMAGE_OSD_COUNT) return;
 938         if (duration < 0) duration = IMAGE_OSD_DEFAULT_DURATION;
 939         if (duration > 1) duration += 1;
 940
 941         osd->icon_time[flag] = duration;
 942
 943         image_osd_update_schedule(osd, FALSE);
 944         image_osd_timer_schedule(osd);
 945 }
 946 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */