Pileus Git - ~andy/gtk/blob - gtk/gtkcellrendererpixbuf.c

   1 /* gtkcellrendererpixbuf.c
   2  * Copyright (C) 2000  Red Hat, Inc.,  Jonathan Blandford <jrb@redhat.com>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <config.h>
  21 #include <stdlib.h>
  22 #include "gtkcellrendererpixbuf.h"
  23 #include "gtkiconfactory.h"
  24 #include "gtkicontheme.h"
  25 #include "gtkintl.h"
  26 #include "gtkprivate.h"
  27 #include "gtkalias.h"
  28
  29 static void gtk_cell_renderer_pixbuf_get_property  (GObject                    *object,
  30                                                     guint                       param_id,
  31                                                     GValue                     *value,
  32                                                     GParamSpec                 *pspec);
  33 static void gtk_cell_renderer_pixbuf_set_property  (GObject                    *object,
  34                                                     guint                       param_id,
  35                                                     const GValue               *value,
  36                                                     GParamSpec                 *pspec);
  37 static void gtk_cell_renderer_pixbuf_init       (GtkCellRendererPixbuf      *celltext);
  38 static void gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class);
  39 static void gtk_cell_renderer_pixbuf_finalize   (GObject                    *object);
  40 static void gtk_cell_renderer_pixbuf_create_stock_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
  41                                                           GtkWidget             *widget);
  42 static void gtk_cell_renderer_pixbuf_create_named_icon_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
  43                                                                GtkWidget             *widget);
  44 static void gtk_cell_renderer_pixbuf_get_size   (GtkCellRenderer            *cell,
  45                                                  GtkWidget                  *widget,
  46                                                  GdkRectangle               *rectangle,
  47                                                  gint                       *x_offset,
  48                                                  gint                       *y_offset,
  49                                                  gint                       *width,
  50                                                  gint                       *height);
  51 static void gtk_cell_renderer_pixbuf_render     (GtkCellRenderer            *cell,
  52                                                  GdkDrawable                *window,
  53                                                  GtkWidget                  *widget,
  54                                                  GdkRectangle               *background_area,
  55                                                  GdkRectangle               *cell_area,
  56                                                  GdkRectangle               *expose_area,
  57                                                  GtkCellRendererState        flags);
  58
  59
  60 enum {
  61         PROP_ZERO,
  62         PROP_PIXBUF,
  63         PROP_PIXBUF_EXPANDER_OPEN,
  64         PROP_PIXBUF_EXPANDER_CLOSED,
  65         PROP_STOCK_ID,
  66         PROP_STOCK_SIZE,
  67         PROP_STOCK_DETAIL,
  68         PROP_FOLLOW_STATE,
  69         PROP_ICON_NAME
  70 };
  71
  72 static gpointer parent_class;
  73
  74
  75 #define GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER_PIXBUF, GtkCellRendererPixbufPrivate))
  76
  77 typedef struct _GtkCellRendererPixbufPrivate GtkCellRendererPixbufPrivate;
  78 struct _GtkCellRendererPixbufPrivate
  79 {
  80   gchar *stock_id;
  81   GtkIconSize stock_size;
  82   gchar *stock_detail;
  83   gboolean follow_state;
  84
  85   gchar *icon_name;
  86 };
  87
  88
  89 GType
  90 gtk_cell_renderer_pixbuf_get_type (void)
  91 {
  92   static GType cell_pixbuf_type = 0;
  93
  94   if (!cell_pixbuf_type)
  95     {
  96       static const GTypeInfo cell_pixbuf_info =
  97       {
  98         sizeof (GtkCellRendererPixbufClass),
  99         NULL,           /* base_init */
 100         NULL,           /* base_finalize */
 101         (GClassInitFunc) gtk_cell_renderer_pixbuf_class_init,
 102         NULL,           /* class_finalize */
 103         NULL,           /* class_data */
 104         sizeof (GtkCellRendererPixbuf),
 105         0,              /* n_preallocs */
 106         (GInstanceInitFunc) gtk_cell_renderer_pixbuf_init,
 107       };
 108
 109       cell_pixbuf_type =
 110         g_type_register_static (GTK_TYPE_CELL_RENDERER, "GtkCellRendererPixbuf",
 111                                 &cell_pixbuf_info, 0);
 112     }
 113
 114   return cell_pixbuf_type;
 115 }
 116
 117 static void
 118 gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *cellpixbuf)
 119 {
 120   GtkCellRendererPixbufPrivate *priv;
 121
 122   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 123   priv->stock_size = GTK_ICON_SIZE_MENU;
 124 }
 125
 126 static void
 127 gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class)
 128 {
 129   GObjectClass *object_class = G_OBJECT_CLASS (class);
 130   GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
 131
 132   parent_class = g_type_class_peek_parent (class);
 133
 134   object_class->finalize = gtk_cell_renderer_pixbuf_finalize;
 135
 136   object_class->get_property = gtk_cell_renderer_pixbuf_get_property;
 137   object_class->set_property = gtk_cell_renderer_pixbuf_set_property;
 138
 139   cell_class->get_size = gtk_cell_renderer_pixbuf_get_size;
 140   cell_class->render = gtk_cell_renderer_pixbuf_render;
 141
 142   g_object_class_install_property (object_class,
 143                                    PROP_PIXBUF,
 144                                    g_param_spec_object ("pixbuf",
 145                                                         P_("Pixbuf Object"),
 146                                                         P_("The pixbuf to render"),
 147                                                         GDK_TYPE_PIXBUF,
 148                                                         GTK_PARAM_READWRITE));
 149
 150   g_object_class_install_property (object_class,
 151                                    PROP_PIXBUF_EXPANDER_OPEN,
 152                                    g_param_spec_object ("pixbuf-expander-open",
 153                                                         P_("Pixbuf Expander Open"),
 154                                                         P_("Pixbuf for open expander"),
 155                                                         GDK_TYPE_PIXBUF,
 156                                                         GTK_PARAM_READWRITE));
 157
 158   g_object_class_install_property (object_class,
 159                                    PROP_PIXBUF_EXPANDER_CLOSED,
 160                                    g_param_spec_object ("pixbuf-expander-closed",
 161                                                         P_("Pixbuf Expander Closed"),
 162                                                         P_("Pixbuf for closed expander"),
 163                                                         GDK_TYPE_PIXBUF,
 164                                                         GTK_PARAM_READWRITE));
 165
 166   g_object_class_install_property (object_class,
 167                                    PROP_STOCK_ID,
 168                                    g_param_spec_string ("stock-id",
 169                                                         P_("Stock ID"),
 170                                                         P_("The stock ID of the stock icon to render"),
 171                                                         NULL,
 172                                                         GTK_PARAM_READWRITE));
 173
 174   g_object_class_install_property (object_class,
 175                                    PROP_STOCK_SIZE,
 176                                    g_param_spec_uint ("stock-size",
 177                                                       P_("Size"),
 178                                                       P_("The GtkIconSize value that specifies the size of the rendered icon"),
 179                                                       0,
 180                                                       G_MAXUINT,
 181                                                       GTK_ICON_SIZE_MENU,
 182                                                       GTK_PARAM_READWRITE));
 183
 184   g_object_class_install_property (object_class,
 185                                    PROP_STOCK_DETAIL,
 186                                    g_param_spec_string ("stock-detail",
 187                                                         P_("Detail"),
 188                                                         P_("Render detail to pass to the theme engine"),
 189                                                         NULL,
 190                                                         GTK_PARAM_READWRITE));
 191
 192
 193   /**
 194    * GtkCellRendererPixbuf:icon-name:
 195    *
 196    * The name of the themed icon to display.
 197    * This property only has an effect if not overridden by "stock_id"
 198    * or "pixbuf" properties.
 199    *
 200    * Since: 2.8
 201    */
 202   g_object_class_install_property (object_class,
 203                                    PROP_ICON_NAME,
 204                                    g_param_spec_string ("icon-name",
 205                                                         P_("Icon Name"),
 206                                                         P_("The name of the icon from the icon theme"),
 207                                                         NULL,
 208                                                         GTK_PARAM_READWRITE));
 209
 210   /**
 211    * GtkCellRendererPixbuf:follow-state:
 212    *
 213    * Specifies whether the rendered pixbuf should be colorized
 214    * according to the #GtkCellRendererState.
 215    *
 216    * Since: 2.8
 217    */
 218   g_object_class_install_property (object_class,
 219                                    PROP_FOLLOW_STATE,
 220                                    g_param_spec_boolean ("follow-state",
 221                                                          P_("Follow State"),
 222                                                          P_("Whether the rendered pixbuf should be "
 223                                                             "colorized according to the state"),
 224                                                          FALSE,
 225                                                          GTK_PARAM_READWRITE));
 226
 227
 228   g_type_class_add_private (object_class, sizeof (GtkCellRendererPixbufPrivate));
 229 }
 230
 231 static void
 232 gtk_cell_renderer_pixbuf_finalize (GObject *object)
 233 {
 234   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 235   GtkCellRendererPixbufPrivate *priv;
 236
 237   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 238
 239   if (cellpixbuf->pixbuf)
 240     g_object_unref (cellpixbuf->pixbuf);
 241
 242   g_free (priv->stock_id);
 243   g_free (priv->stock_detail);
 244   g_free (priv->icon_name);
 245
 246   (* G_OBJECT_CLASS (parent_class)->finalize) (object);
 247 }
 248
 249 static void
 250 gtk_cell_renderer_pixbuf_get_property (GObject        *object,
 251                                        guint           param_id,
 252                                        GValue         *value,
 253                                        GParamSpec     *pspec)
 254 {
 255   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 256   GtkCellRendererPixbufPrivate *priv;
 257
 258   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 259
 260   switch (param_id)
 261     {
 262     case PROP_PIXBUF:
 263       g_value_set_object (value,
 264                           cellpixbuf->pixbuf ? G_OBJECT (cellpixbuf->pixbuf) : NULL);
 265       break;
 266     case PROP_PIXBUF_EXPANDER_OPEN:
 267       g_value_set_object (value,
 268                           cellpixbuf->pixbuf_expander_open ? G_OBJECT (cellpixbuf->pixbuf_expander_open) : NULL);
 269       break;
 270     case PROP_PIXBUF_EXPANDER_CLOSED:
 271       g_value_set_object (value,
 272                           cellpixbuf->pixbuf_expander_closed ? G_OBJECT (cellpixbuf->pixbuf_expander_closed) : NULL);
 273       break;
 274     case PROP_STOCK_ID:
 275       g_value_set_string (value, priv->stock_id);
 276       break;
 277     case PROP_STOCK_SIZE:
 278       g_value_set_uint (value, priv->stock_size);
 279       break;
 280     case PROP_STOCK_DETAIL:
 281       g_value_set_string (value, priv->stock_detail);
 282       break;
 283     case PROP_FOLLOW_STATE:
 284       g_value_set_boolean (value, priv->follow_state);
 285       break;
 286     case PROP_ICON_NAME:
 287       g_value_set_string (value, priv->icon_name);
 288       break;
 289     default:
 290       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 291       break;
 292     }
 293 }
 294
 295
 296 static void
 297 gtk_cell_renderer_pixbuf_set_property (GObject      *object,
 298                                        guint         param_id,
 299                                        const GValue *value,
 300                                        GParamSpec   *pspec)
 301 {
 302   GdkPixbuf *pixbuf;
 303   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 304   GtkCellRendererPixbufPrivate *priv;
 305
 306   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 307
 308   switch (param_id)
 309     {
 310     case PROP_PIXBUF:
 311       pixbuf = (GdkPixbuf*) g_value_get_object (value);
 312       if (pixbuf)
 313         g_object_ref (pixbuf);
 314       if (cellpixbuf->pixbuf)
 315         g_object_unref (cellpixbuf->pixbuf);
 316       cellpixbuf->pixbuf = pixbuf;
 317       break;
 318     case PROP_PIXBUF_EXPANDER_OPEN:
 319       pixbuf = (GdkPixbuf*) g_value_get_object (value);
 320       if (pixbuf)
 321         g_object_ref (pixbuf);
 322       if (cellpixbuf->pixbuf_expander_open)
 323         g_object_unref (cellpixbuf->pixbuf_expander_open);
 324       cellpixbuf->pixbuf_expander_open = pixbuf;
 325       break;
 326     case PROP_PIXBUF_EXPANDER_CLOSED:
 327       pixbuf = (GdkPixbuf*) g_value_get_object (value);
 328       if (pixbuf)
 329         g_object_ref (pixbuf);
 330       if (cellpixbuf->pixbuf_expander_closed)
 331         g_object_unref (cellpixbuf->pixbuf_expander_closed);
 332       cellpixbuf->pixbuf_expander_closed = pixbuf;
 333       break;
 334     case PROP_STOCK_ID:
 335       if (priv->stock_id)
 336         {
 337           if (cellpixbuf->pixbuf)
 338             {
 339               g_object_unref (cellpixbuf->pixbuf);
 340               cellpixbuf->pixbuf = NULL;
 341             }
 342           g_free (priv->stock_id);
 343           g_free (priv->icon_name);
 344           priv->icon_name = NULL;
 345         }
 346       priv->stock_id = g_strdup (g_value_get_string (value));
 347       break;
 348     case PROP_STOCK_SIZE:
 349       priv->stock_size = g_value_get_uint (value);
 350       break;
 351     case PROP_STOCK_DETAIL:
 352       if (priv->stock_detail)
 353         g_free (priv->stock_detail);
 354       priv->stock_detail = g_strdup (g_value_get_string (value));
 355       break;
 356     case PROP_ICON_NAME:
 357       if (priv->icon_name)
 358         {
 359           if (cellpixbuf->pixbuf)
 360             {
 361               g_object_unref (cellpixbuf->pixbuf);
 362               cellpixbuf->pixbuf = NULL;
 363             }
 364           g_free (priv->stock_id);
 365           g_free (priv->icon_name);
 366         }
 367       priv->icon_name = g_strdup (g_value_get_string (value));
 368       break;
 369     case PROP_FOLLOW_STATE:
 370       priv->follow_state = g_value_get_boolean (value);
 371       break;
 372     default:
 373       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 374       break;
 375     }
 376
 377   if (cellpixbuf->pixbuf && priv->stock_id)
 378     {
 379       g_object_unref (cellpixbuf->pixbuf);
 380       cellpixbuf->pixbuf = NULL;
 381     }
 382 }
 383
 384 /**
 385  * gtk_cell_renderer_pixbuf_new:
 386  *
 387  * Creates a new #GtkCellRendererPixbuf. Adjust rendering
 388  * parameters using object properties. Object properties can be set
 389  * globally (with g_object_set()). Also, with #GtkTreeViewColumn, you
 390  * can bind a property to a value in a #GtkTreeModel. For example, you
 391  * can bind the "pixbuf" property on the cell renderer to a pixbuf value
 392  * in the model, thus rendering a different image in each row of the
 393  * #GtkTreeView.
 394  *
 395  * Return value: the new cell renderer
 396  **/
 397 GtkCellRenderer *
 398 gtk_cell_renderer_pixbuf_new (void)
 399 {
 400   return g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF, NULL);
 401 }
 402
 403 static void
 404 gtk_cell_renderer_pixbuf_create_stock_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 405                                               GtkWidget             *widget)
 406 {
 407   GtkCellRendererPixbufPrivate *priv;
 408
 409   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 410
 411   if (cellpixbuf->pixbuf)
 412     g_object_unref (cellpixbuf->pixbuf);
 413
 414   cellpixbuf->pixbuf = gtk_widget_render_icon (widget,
 415                                                priv->stock_id,
 416                                                priv->stock_size,
 417                                                priv->stock_detail);
 418 }
 419
 420 static void
 421 gtk_cell_renderer_pixbuf_create_named_icon_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 422                                                    GtkWidget             *widget)
 423 {
 424   GtkCellRendererPixbufPrivate *priv;
 425   GdkScreen *screen;
 426   GtkIconTheme *icon_theme;
 427   GtkSettings *settings;
 428   gint width, height;
 429   GError *error = NULL;
 430
 431   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 432
 433   if (cellpixbuf->pixbuf)
 434     g_object_unref (cellpixbuf->pixbuf);
 435
 436   screen = gtk_widget_get_screen (GTK_WIDGET (widget));
 437   icon_theme = gtk_icon_theme_get_for_screen (screen);
 438   settings = gtk_settings_get_for_screen (screen);
 439
 440   if (!gtk_icon_size_lookup_for_settings (settings,
 441                                           priv->stock_size,
 442                                           &width, &height))
 443     {
 444       g_warning ("Invalid icon size %d\n", priv->stock_size);
 445       width = height = 24;
 446     }
 447
 448   cellpixbuf->pixbuf =
 449     gtk_icon_theme_load_icon (icon_theme,
 450                               priv->icon_name,
 451                               MIN (width, height), 0, &error);
 452   if (!cellpixbuf->pixbuf)
 453     {
 454       g_warning ("could not load image: %s\n", error->message);
 455       g_error_free (error);
 456     }
 457 }
 458
 459 static GdkPixbuf *
 460 create_colorized_pixbuf (GdkPixbuf *src,
 461                          GdkColor  *new_color)
 462 {
 463   gint i, j;
 464   gint width, height, has_alpha, src_row_stride, dst_row_stride;
 465   gint red_value, green_value, blue_value;
 466   guchar *target_pixels;
 467   guchar *original_pixels;
 468   guchar *pixsrc;
 469   guchar *pixdest;
 470   GdkPixbuf *dest;
 471
 472   red_value = new_color->red / 255.0;
 473   green_value = new_color->green / 255.0;
 474   blue_value = new_color->blue / 255.0;
 475
 476   dest = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (src),
 477                          gdk_pixbuf_get_has_alpha (src),
 478                          gdk_pixbuf_get_bits_per_sample (src),
 479                          gdk_pixbuf_get_width (src),
 480                          gdk_pixbuf_get_height (src));
 481
 482   has_alpha = gdk_pixbuf_get_has_alpha (src);
 483   width = gdk_pixbuf_get_width (src);
 484   height = gdk_pixbuf_get_height (src);
 485   src_row_stride = gdk_pixbuf_get_rowstride (src);
 486   dst_row_stride = gdk_pixbuf_get_rowstride (dest);
 487   target_pixels = gdk_pixbuf_get_pixels (dest);
 488   original_pixels = gdk_pixbuf_get_pixels (src);
 489
 490   for (i = 0; i < height; i++) {
 491     pixdest = target_pixels + i*dst_row_stride;
 492     pixsrc = original_pixels + i*src_row_stride;
 493     for (j = 0; j < width; j++) {
 494       *pixdest++ = (*pixsrc++ * red_value) >> 8;
 495       *pixdest++ = (*pixsrc++ * green_value) >> 8;
 496       *pixdest++ = (*pixsrc++ * blue_value) >> 8;
 497       if (has_alpha) {
 498         *pixdest++ = *pixsrc++;
 499       }
 500     }
 501   }
 502   return dest;
 503 }
 504
 505
 506 static void
 507 gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
 508                                    GtkWidget       *widget,
 509                                    GdkRectangle    *cell_area,
 510                                    gint            *x_offset,
 511                                    gint            *y_offset,
 512                                    gint            *width,
 513                                    gint            *height)
 514 {
 515   GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
 516   GtkCellRendererPixbufPrivate *priv;
 517   gint pixbuf_width  = 0;
 518   gint pixbuf_height = 0;
 519   gint calc_width;
 520   gint calc_height;
 521
 522   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 523
 524   if (!cellpixbuf->pixbuf)
 525     {
 526       if (priv->stock_id)
 527         gtk_cell_renderer_pixbuf_create_stock_pixbuf (cellpixbuf, widget);
 528       else if (priv->icon_name)
 529         gtk_cell_renderer_pixbuf_create_named_icon_pixbuf (cellpixbuf, widget);
 530     }
 531
 532   if (cellpixbuf->pixbuf)
 533     {
 534       pixbuf_width  = gdk_pixbuf_get_width (cellpixbuf->pixbuf);
 535       pixbuf_height = gdk_pixbuf_get_height (cellpixbuf->pixbuf);
 536     }
 537   if (cellpixbuf->pixbuf_expander_open)
 538     {
 539       pixbuf_width  = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_open));
 540       pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_open));
 541     }
 542   if (cellpixbuf->pixbuf_expander_closed)
 543     {
 544       pixbuf_width  = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_closed));
 545       pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_closed));
 546     }
 547
 548   calc_width  = (gint) cell->xpad * 2 + pixbuf_width;
 549   calc_height = (gint) cell->ypad * 2 + pixbuf_height;
 550
 551   if (x_offset) *x_offset = 0;
 552   if (y_offset) *y_offset = 0;
 553
 554   if (cell_area && pixbuf_width > 0 && pixbuf_height > 0)
 555     {
 556       if (x_offset)
 557         {
 558           *x_offset = (((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
 559                         1.0 - cell->xalign : cell->xalign) *
 560                        (cell_area->width - calc_width - 2 * cell->xpad));
 561           *x_offset = MAX (*x_offset, 0) + cell->xpad;
 562         }
 563       if (y_offset)
 564         {
 565           *y_offset = (cell->yalign *
 566                        (cell_area->height - calc_height - 2 * cell->ypad));
 567           *y_offset = MAX (*y_offset, 0) + cell->ypad;
 568         }
 569     }
 570
 571   if (width)
 572     *width = calc_width;
 573
 574   if (height)
 575     *height = calc_height;
 576 }
 577
 578 static void
 579 gtk_cell_renderer_pixbuf_render (GtkCellRenderer      *cell,
 580                                  GdkWindow            *window,
 581                                  GtkWidget            *widget,
 582                                  GdkRectangle         *background_area,
 583                                  GdkRectangle         *cell_area,
 584                                  GdkRectangle         *expose_area,
 585                                  GtkCellRendererState  flags)
 586
 587 {
 588   GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
 589   GtkCellRendererPixbufPrivate *priv;
 590   GdkPixbuf *pixbuf;
 591   GdkPixbuf *invisible = NULL;
 592   GdkPixbuf *colorized = NULL;
 593   GdkRectangle pix_rect;
 594   GdkRectangle draw_rect;
 595   cairo_t *cr;
 596
 597   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 598
 599   gtk_cell_renderer_pixbuf_get_size (cell, widget, cell_area,
 600                                      &pix_rect.x,
 601                                      &pix_rect.y,
 602                                      &pix_rect.width,
 603                                      &pix_rect.height);
 604
 605   pix_rect.x += cell_area->x;
 606   pix_rect.y += cell_area->y;
 607   pix_rect.width  -= cell->xpad * 2;
 608   pix_rect.height -= cell->ypad * 2;
 609
 610   if (!gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect) ||
 611       !gdk_rectangle_intersect (expose_area, &draw_rect, &draw_rect))
 612     return;
 613
 614   pixbuf = cellpixbuf->pixbuf;
 615
 616   if (cell->is_expander)
 617     {
 618       if (cell->is_expanded &&
 619           cellpixbuf->pixbuf_expander_open != NULL)
 620         pixbuf = cellpixbuf->pixbuf_expander_open;
 621       else if (!cell->is_expanded &&
 622                cellpixbuf->pixbuf_expander_closed != NULL)
 623         pixbuf = cellpixbuf->pixbuf_expander_closed;
 624     }
 625
 626   if (!pixbuf)
 627     return;
 628
 629   if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE || !cell->sensitive)
 630     {
 631       GtkIconSource *source;
 632
 633       source = gtk_icon_source_new ();
 634       gtk_icon_source_set_pixbuf (source, pixbuf);
 635       /* The size here is arbitrary; since size isn't
 636        * wildcarded in the source, it isn't supposed to be
 637        * scaled by the engine function
 638        */
 639       gtk_icon_source_set_size (source, GTK_ICON_SIZE_SMALL_TOOLBAR);
 640       gtk_icon_source_set_size_wildcarded (source, FALSE);
 641
 642      invisible = gtk_style_render_icon (widget->style,
 643                                         source,
 644                                         gtk_widget_get_direction (widget),
 645                                         GTK_STATE_INSENSITIVE,
 646                                         /* arbitrary */
 647                                         (GtkIconSize)-1,
 648                                         widget,
 649                                         "gtkcellrendererpixbuf");
 650
 651      gtk_icon_source_free (source);
 652
 653      pixbuf = invisible;
 654     }
 655   else if (priv->follow_state &&
 656            (flags & (GTK_CELL_RENDERER_SELECTED|GTK_CELL_RENDERER_PRELIT)) != 0)
 657     {
 658       GtkStateType state;
 659
 660       if ((flags & GTK_CELL_RENDERER_SELECTED) != 0)
 661         {
 662           if (GTK_WIDGET_HAS_FOCUS (widget))
 663             state = GTK_STATE_SELECTED;
 664           else
 665             state = GTK_STATE_ACTIVE;
 666         }
 667       else
 668         state = GTK_STATE_PRELIGHT;
 669
 670       colorized = create_colorized_pixbuf (pixbuf,
 671                                            &widget->style->base[state]);
 672
 673       pixbuf = colorized;
 674     }
 675
 676   cr = gdk_cairo_create (window);
 677
 678   gdk_cairo_set_source_pixbuf (cr, pixbuf, pix_rect.x, pix_rect.y);
 679   gdk_cairo_rectangle (cr, &draw_rect);
 680   cairo_fill (cr);
 681
 682   cairo_destroy (cr);
 683
 684   if (invisible)
 685     g_object_unref (invisible);
 686
 687   if (colorized)
 688     g_object_unref (colorized);
 689 }
 690
 691 #define __GTK_CELL_RENDERER_PIXBUF_C__
 692 #include "gtkaliasdef.c"