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_finalize   (GObject                    *object);
  38 static void gtk_cell_renderer_pixbuf_create_stock_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
  39                                                           GtkWidget             *widget);
  40 static void gtk_cell_renderer_pixbuf_get_size   (GtkCellRenderer            *cell,
  41                                                  GtkWidget                  *widget,
  42                                                  GdkRectangle               *rectangle,
  43                                                  gint                       *x_offset,
  44                                                  gint                       *y_offset,
  45                                                  gint                       *width,
  46                                                  gint                       *height);
  47 static void gtk_cell_renderer_pixbuf_render     (GtkCellRenderer            *cell,
  48                                                  GdkDrawable                *window,
  49                                                  GtkWidget                  *widget,
  50                                                  GdkRectangle               *background_area,
  51                                                  GdkRectangle               *cell_area,
  52                                                  GdkRectangle               *expose_area,
  53                                                  GtkCellRendererState        flags);
  54
  55
  56 enum {
  57   PROP_0,
  58   PROP_PIXBUF,
  59   PROP_PIXBUF_EXPANDER_OPEN,
  60   PROP_PIXBUF_EXPANDER_CLOSED,
  61   PROP_STOCK_ID,
  62   PROP_STOCK_SIZE,
  63   PROP_STOCK_DETAIL,
  64   PROP_FOLLOW_STATE,
  65   PROP_ICON_NAME,
  66   PROP_GICON
  67 };
  68
  69
  70 #define GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), GTK_TYPE_CELL_RENDERER_PIXBUF, GtkCellRendererPixbufPrivate))
  71
  72 typedef struct _GtkCellRendererPixbufPrivate GtkCellRendererPixbufPrivate;
  73 struct _GtkCellRendererPixbufPrivate
  74 {
  75   gchar *stock_id;
  76   GtkIconSize stock_size;
  77   gchar *stock_detail;
  78   gboolean follow_state;
  79   gchar *icon_name;
  80   GIcon *gicon;
  81 };
  82
  83 G_DEFINE_TYPE (GtkCellRendererPixbuf, gtk_cell_renderer_pixbuf, GTK_TYPE_CELL_RENDERER)
  84
  85 static void
  86 gtk_cell_renderer_pixbuf_init (GtkCellRendererPixbuf *cellpixbuf)
  87 {
  88   GtkCellRendererPixbufPrivate *priv;
  89
  90   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
  91   priv->stock_size = GTK_ICON_SIZE_MENU;
  92 }
  93
  94 static void
  95 gtk_cell_renderer_pixbuf_class_init (GtkCellRendererPixbufClass *class)
  96 {
  97   GObjectClass *object_class = G_OBJECT_CLASS (class);
  98   GtkCellRendererClass *cell_class = GTK_CELL_RENDERER_CLASS (class);
  99
 100   object_class->finalize = gtk_cell_renderer_pixbuf_finalize;
 101
 102   object_class->get_property = gtk_cell_renderer_pixbuf_get_property;
 103   object_class->set_property = gtk_cell_renderer_pixbuf_set_property;
 104
 105   cell_class->get_size = gtk_cell_renderer_pixbuf_get_size;
 106   cell_class->render = gtk_cell_renderer_pixbuf_render;
 107
 108   g_object_class_install_property (object_class,
 109                                    PROP_PIXBUF,
 110                                    g_param_spec_object ("pixbuf",
 111                                                         P_("Pixbuf Object"),
 112                                                         P_("The pixbuf to render"),
 113                                                         GDK_TYPE_PIXBUF,
 114                                                         GTK_PARAM_READWRITE));
 115
 116   g_object_class_install_property (object_class,
 117                                    PROP_PIXBUF_EXPANDER_OPEN,
 118                                    g_param_spec_object ("pixbuf-expander-open",
 119                                                         P_("Pixbuf Expander Open"),
 120                                                         P_("Pixbuf for open expander"),
 121                                                         GDK_TYPE_PIXBUF,
 122                                                         GTK_PARAM_READWRITE));
 123
 124   g_object_class_install_property (object_class,
 125                                    PROP_PIXBUF_EXPANDER_CLOSED,
 126                                    g_param_spec_object ("pixbuf-expander-closed",
 127                                                         P_("Pixbuf Expander Closed"),
 128                                                         P_("Pixbuf for closed expander"),
 129                                                         GDK_TYPE_PIXBUF,
 130                                                         GTK_PARAM_READWRITE));
 131
 132   g_object_class_install_property (object_class,
 133                                    PROP_STOCK_ID,
 134                                    g_param_spec_string ("stock-id",
 135                                                         P_("Stock ID"),
 136                                                         P_("The stock ID of the stock icon to render"),
 137                                                         NULL,
 138                                                         GTK_PARAM_READWRITE));
 139
 140   g_object_class_install_property (object_class,
 141                                    PROP_STOCK_SIZE,
 142                                    g_param_spec_uint ("stock-size",
 143                                                       P_("Size"),
 144                                                       P_("The GtkIconSize value that specifies the size of the rendered icon"),
 145                                                       0,
 146                                                       G_MAXUINT,
 147                                                       GTK_ICON_SIZE_MENU,
 148                                                       GTK_PARAM_READWRITE));
 149
 150   g_object_class_install_property (object_class,
 151                                    PROP_STOCK_DETAIL,
 152                                    g_param_spec_string ("stock-detail",
 153                                                         P_("Detail"),
 154                                                         P_("Render detail to pass to the theme engine"),
 155                                                         NULL,
 156                                                         GTK_PARAM_READWRITE));
 157
 158
 159   /**
 160    * GtkCellRendererPixbuf:icon-name:
 161    *
 162    * The name of the themed icon to display.
 163    * This property only has an effect if not overridden by "stock_id"
 164    * or "pixbuf" properties.
 165    *
 166    * Since: 2.8
 167    */
 168   g_object_class_install_property (object_class,
 169                                    PROP_ICON_NAME,
 170                                    g_param_spec_string ("icon-name",
 171                                                         P_("Icon Name"),
 172                                                         P_("The name of the icon from the icon theme"),
 173                                                         NULL,
 174                                                         GTK_PARAM_READWRITE));
 175
 176   /**
 177    * GtkCellRendererPixbuf:follow-state:
 178    *
 179    * Specifies whether the rendered pixbuf should be colorized
 180    * according to the #GtkCellRendererState.
 181    *
 182    * Since: 2.8
 183    */
 184   g_object_class_install_property (object_class,
 185                                    PROP_FOLLOW_STATE,
 186                                    g_param_spec_boolean ("follow-state",
 187                                                          P_("Follow State"),
 188                                                          P_("Whether the rendered pixbuf should be "
 189                                                             "colorized according to the state"),
 190                                                          FALSE,
 191                                                          GTK_PARAM_READWRITE));
 192
 193   /**
 194    * GtkCellRendererPixbuf:gicon:
 195    *
 196    * The GIcon representing the icon to display.
 197    * If the icon theme is changed, the image will be updated
 198    * automatically.
 199    *
 200    * Since: 2.14
 201    */
 202   g_object_class_install_property (object_class,
 203                                    PROP_GICON,
 204                                    g_param_spec_object ("gicon",
 205                                                         P_("Icon"),
 206                                                         P_("The GIcon being displayed"),
 207                                                         G_TYPE_ICON,
 208                                                         GTK_PARAM_READWRITE));
 209
 210
 211
 212   g_type_class_add_private (object_class, sizeof (GtkCellRendererPixbufPrivate));
 213 }
 214
 215 static void
 216 gtk_cell_renderer_pixbuf_finalize (GObject *object)
 217 {
 218   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 219   GtkCellRendererPixbufPrivate *priv;
 220
 221   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 222
 223   if (cellpixbuf->pixbuf)
 224     g_object_unref (cellpixbuf->pixbuf);
 225   if (cellpixbuf->pixbuf_expander_open)
 226     g_object_unref (cellpixbuf->pixbuf_expander_open);
 227   if (cellpixbuf->pixbuf_expander_closed)
 228     g_object_unref (cellpixbuf->pixbuf_expander_closed);
 229
 230   g_free (priv->stock_id);
 231   g_free (priv->stock_detail);
 232   g_free (priv->icon_name);
 233
 234   if (priv->gicon)
 235     g_object_unref (priv->gicon);
 236
 237   G_OBJECT_CLASS (gtk_cell_renderer_pixbuf_parent_class)->finalize (object);
 238 }
 239
 240 static void
 241 gtk_cell_renderer_pixbuf_get_property (GObject        *object,
 242                                        guint           param_id,
 243                                        GValue         *value,
 244                                        GParamSpec     *pspec)
 245 {
 246   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 247   GtkCellRendererPixbufPrivate *priv;
 248
 249   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 250
 251   switch (param_id)
 252     {
 253     case PROP_PIXBUF:
 254       g_value_set_object (value, cellpixbuf->pixbuf);
 255       break;
 256     case PROP_PIXBUF_EXPANDER_OPEN:
 257       g_value_set_object (value, cellpixbuf->pixbuf_expander_open);
 258       break;
 259     case PROP_PIXBUF_EXPANDER_CLOSED:
 260       g_value_set_object (value, cellpixbuf->pixbuf_expander_closed);
 261       break;
 262     case PROP_STOCK_ID:
 263       g_value_set_string (value, priv->stock_id);
 264       break;
 265     case PROP_STOCK_SIZE:
 266       g_value_set_uint (value, priv->stock_size);
 267       break;
 268     case PROP_STOCK_DETAIL:
 269       g_value_set_string (value, priv->stock_detail);
 270       break;
 271     case PROP_FOLLOW_STATE:
 272       g_value_set_boolean (value, priv->follow_state);
 273       break;
 274     case PROP_ICON_NAME:
 275       g_value_set_string (value, priv->icon_name);
 276       break;
 277     case PROP_GICON:
 278       g_value_set_object (value, priv->gicon);
 279       break;
 280     default:
 281       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 282       break;
 283     }
 284 }
 285
 286 static void
 287 unset_image_properties (GtkCellRendererPixbuf *cell)
 288 {
 289   GtkCellRendererPixbufPrivate *priv;
 290
 291   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 292
 293   if (priv->stock_id)
 294     {
 295       g_free (priv->stock_id);
 296       priv->stock_id = NULL;
 297       g_object_notify (G_OBJECT (cell), "stock-id");
 298     }
 299   if (priv->icon_name)
 300     {
 301       g_free (priv->icon_name);
 302       priv->icon_name = NULL;
 303       g_object_notify (G_OBJECT (cell), "icon-name");
 304     }
 305   if (cell->pixbuf)
 306     {
 307       g_object_unref (cell->pixbuf);
 308       cell->pixbuf = NULL;
 309       g_object_notify (G_OBJECT (cell), "pixbuf");
 310     }
 311   if (priv->gicon)
 312     {
 313       g_object_unref (priv->gicon);
 314       priv->gicon = NULL;
 315       g_object_notify (G_OBJECT (cell), "gicon");
 316     }
 317 }
 318
 319 static void
 320 gtk_cell_renderer_pixbuf_set_property (GObject      *object,
 321                                        guint         param_id,
 322                                        const GValue *value,
 323                                        GParamSpec   *pspec)
 324 {
 325   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 326   GtkCellRendererPixbufPrivate *priv;
 327
 328   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 329
 330   switch (param_id)
 331     {
 332     case PROP_PIXBUF:
 333       unset_image_properties (cellpixbuf);
 334       cellpixbuf->pixbuf = (GdkPixbuf *) g_value_dup_object (value);
 335       break;
 336     case PROP_PIXBUF_EXPANDER_OPEN:
 337       if (cellpixbuf->pixbuf_expander_open)
 338         g_object_unref (cellpixbuf->pixbuf_expander_open);
 339       cellpixbuf->pixbuf_expander_open = (GdkPixbuf*) g_value_dup_object (value);
 340       break;
 341     case PROP_PIXBUF_EXPANDER_CLOSED:
 342       if (cellpixbuf->pixbuf_expander_closed)
 343         g_object_unref (cellpixbuf->pixbuf_expander_closed);
 344       cellpixbuf->pixbuf_expander_closed = (GdkPixbuf*) g_value_dup_object (value);
 345       break;
 346     case PROP_STOCK_ID:
 347       unset_image_properties (cellpixbuf);
 348       priv->stock_id = g_value_dup_string (value);
 349       break;
 350     case PROP_STOCK_SIZE:
 351       priv->stock_size = g_value_get_uint (value);
 352       break;
 353     case PROP_STOCK_DETAIL:
 354       g_free (priv->stock_detail);
 355       priv->stock_detail = g_value_dup_string (value);
 356       break;
 357     case PROP_ICON_NAME:
 358       unset_image_properties (cellpixbuf);
 359       priv->icon_name = g_value_dup_string (value);
 360       break;
 361     case PROP_FOLLOW_STATE:
 362       priv->follow_state = g_value_get_boolean (value);
 363       break;
 364     case PROP_GICON:
 365       unset_image_properties (cellpixbuf);
 366       priv->gicon = (GIcon *) g_value_dup_object (value);
 367       break;
 368     default:
 369       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 370       break;
 371     }
 372 }
 373
 374 /**
 375  * gtk_cell_renderer_pixbuf_new:
 376  *
 377  * Creates a new #GtkCellRendererPixbuf. Adjust rendering
 378  * parameters using object properties. Object properties can be set
 379  * globally (with g_object_set()). Also, with #GtkTreeViewColumn, you
 380  * can bind a property to a value in a #GtkTreeModel. For example, you
 381  * can bind the "pixbuf" property on the cell renderer to a pixbuf value
 382  * in the model, thus rendering a different image in each row of the
 383  * #GtkTreeView.
 384  *
 385  * Return value: the new cell renderer
 386  **/
 387 GtkCellRenderer *
 388 gtk_cell_renderer_pixbuf_new (void)
 389 {
 390   return g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF, NULL);
 391 }
 392
 393 static void
 394 gtk_cell_renderer_pixbuf_create_stock_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 395                                               GtkWidget             *widget)
 396 {
 397   GtkCellRendererPixbufPrivate *priv;
 398
 399   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 400
 401   if (cellpixbuf->pixbuf)
 402     g_object_unref (cellpixbuf->pixbuf);
 403
 404   cellpixbuf->pixbuf = gtk_widget_render_icon (widget,
 405                                                priv->stock_id,
 406                                                priv->stock_size,
 407                                                priv->stock_detail);
 408
 409   g_object_notify (G_OBJECT (cellpixbuf), "pixbuf");
 410 }
 411
 412 static void
 413 gtk_cell_renderer_pixbuf_create_themed_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 414                                                GtkWidget             *widget)
 415 {
 416   GtkCellRendererPixbufPrivate *priv;
 417   GdkScreen *screen;
 418   GtkIconTheme *icon_theme;
 419   GtkSettings *settings;
 420   gint width, height;
 421   GError *error = NULL;
 422
 423   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 424
 425   if (cellpixbuf->pixbuf)
 426     {
 427       g_object_unref (cellpixbuf->pixbuf);
 428       cellpixbuf->pixbuf = NULL;
 429     }
 430
 431   screen = gtk_widget_get_screen (GTK_WIDGET (widget));
 432   icon_theme = gtk_icon_theme_get_for_screen (screen);
 433   settings = gtk_settings_get_for_screen (screen);
 434
 435   if (!gtk_icon_size_lookup_for_settings (settings,
 436                                           priv->stock_size,
 437                                           &width, &height))
 438     {
 439       g_warning ("Invalid icon size %u\n", priv->stock_size);
 440       width = height = 24;
 441     }
 442
 443   if (priv->icon_name)
 444     cellpixbuf->pixbuf = gtk_icon_theme_load_icon (icon_theme,
 445                                                    priv->icon_name,
 446                                                    MIN (width, height),
 447                                                    GTK_ICON_LOOKUP_USE_BUILTIN,
 448                                                    &error);
 449   else if (priv->gicon)
 450     {
 451       GtkIconInfo *info;
 452
 453       info = gtk_icon_theme_lookup_by_gicon (icon_theme,
 454                                              priv->gicon,
 455                                              MIN (width, height),
 456                                              GTK_ICON_LOOKUP_USE_BUILTIN);
 457       if (!info)
 458         {
 459           g_set_error (&error, GTK_ICON_THEME_ERROR,  GTK_ICON_THEME_NOT_FOUND,
 460                        _("Icon not present in theme"));
 461         }
 462       else
 463         {
 464           cellpixbuf->pixbuf = gtk_icon_info_load_icon (info, &error);
 465           gtk_icon_info_free (info);
 466         }
 467     }
 468
 469   if (!cellpixbuf->pixbuf)
 470   {
 471       g_warning ("could not load image: %s\n", error->message);
 472       g_error_free (error);
 473     }
 474
 475   g_object_notify (G_OBJECT (cellpixbuf), "pixbuf");
 476 }
 477
 478 static GdkPixbuf *
 479 create_colorized_pixbuf (GdkPixbuf *src,
 480                          GdkColor  *new_color)
 481 {
 482   gint i, j;
 483   gint width, height, has_alpha, src_row_stride, dst_row_stride;
 484   gint red_value, green_value, blue_value;
 485   guchar *target_pixels;
 486   guchar *original_pixels;
 487   guchar *pixsrc;
 488   guchar *pixdest;
 489   GdkPixbuf *dest;
 490
 491   red_value = new_color->red / 255.0;
 492   green_value = new_color->green / 255.0;
 493   blue_value = new_color->blue / 255.0;
 494
 495   dest = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (src),
 496                          gdk_pixbuf_get_has_alpha (src),
 497                          gdk_pixbuf_get_bits_per_sample (src),
 498                          gdk_pixbuf_get_width (src),
 499                          gdk_pixbuf_get_height (src));
 500
 501   has_alpha = gdk_pixbuf_get_has_alpha (src);
 502   width = gdk_pixbuf_get_width (src);
 503   height = gdk_pixbuf_get_height (src);
 504   src_row_stride = gdk_pixbuf_get_rowstride (src);
 505   dst_row_stride = gdk_pixbuf_get_rowstride (dest);
 506   target_pixels = gdk_pixbuf_get_pixels (dest);
 507   original_pixels = gdk_pixbuf_get_pixels (src);
 508
 509   for (i = 0; i < height; i++) {
 510     pixdest = target_pixels + i*dst_row_stride;
 511     pixsrc = original_pixels + i*src_row_stride;
 512     for (j = 0; j < width; j++) {
 513       *pixdest++ = (*pixsrc++ * red_value) >> 8;
 514       *pixdest++ = (*pixsrc++ * green_value) >> 8;
 515       *pixdest++ = (*pixsrc++ * blue_value) >> 8;
 516       if (has_alpha) {
 517         *pixdest++ = *pixsrc++;
 518       }
 519     }
 520   }
 521   return dest;
 522 }
 523
 524
 525 static void
 526 gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
 527                                    GtkWidget       *widget,
 528                                    GdkRectangle    *cell_area,
 529                                    gint            *x_offset,
 530                                    gint            *y_offset,
 531                                    gint            *width,
 532                                    gint            *height)
 533 {
 534   GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
 535   GtkCellRendererPixbufPrivate *priv;
 536   gint pixbuf_width  = 0;
 537   gint pixbuf_height = 0;
 538   gint calc_width;
 539   gint calc_height;
 540
 541   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 542
 543   if (!cellpixbuf->pixbuf)
 544     {
 545       if (priv->stock_id)
 546         gtk_cell_renderer_pixbuf_create_stock_pixbuf (cellpixbuf, widget);
 547       else if (priv->icon_name || priv->gicon)
 548         gtk_cell_renderer_pixbuf_create_themed_pixbuf (cellpixbuf, widget);
 549     }
 550
 551   if (cellpixbuf->pixbuf)
 552     {
 553       pixbuf_width  = gdk_pixbuf_get_width (cellpixbuf->pixbuf);
 554       pixbuf_height = gdk_pixbuf_get_height (cellpixbuf->pixbuf);
 555     }
 556   if (cellpixbuf->pixbuf_expander_open)
 557     {
 558       pixbuf_width  = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_open));
 559       pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_open));
 560     }
 561   if (cellpixbuf->pixbuf_expander_closed)
 562     {
 563       pixbuf_width  = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_closed));
 564       pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_closed));
 565     }
 566
 567   calc_width  = (gint) cell->xpad * 2 + pixbuf_width;
 568   calc_height = (gint) cell->ypad * 2 + pixbuf_height;
 569
 570   if (cell_area && pixbuf_width > 0 && pixbuf_height > 0)
 571     {
 572       if (x_offset)
 573         {
 574           *x_offset = (((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
 575                         (1.0 - cell->xalign) : cell->xalign) *
 576                        (cell_area->width - calc_width));
 577           *x_offset = MAX (*x_offset, 0);
 578         }
 579       if (y_offset)
 580         {
 581           *y_offset = (cell->yalign *
 582                        (cell_area->height - calc_height));
 583           *y_offset = MAX (*y_offset, 0);
 584         }
 585     }
 586   else
 587     {
 588       if (x_offset) *x_offset = 0;
 589       if (y_offset) *y_offset = 0;
 590     }
 591
 592   if (width)
 593     *width = calc_width;
 594
 595   if (height)
 596     *height = calc_height;
 597 }
 598
 599 static void
 600 gtk_cell_renderer_pixbuf_render (GtkCellRenderer      *cell,
 601                                  GdkWindow            *window,
 602                                  GtkWidget            *widget,
 603                                  GdkRectangle         *background_area,
 604                                  GdkRectangle         *cell_area,
 605                                  GdkRectangle         *expose_area,
 606                                  GtkCellRendererState  flags)
 607
 608 {
 609   GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
 610   GtkCellRendererPixbufPrivate *priv;
 611   GdkPixbuf *pixbuf;
 612   GdkPixbuf *invisible = NULL;
 613   GdkPixbuf *colorized = NULL;
 614   GdkRectangle pix_rect;
 615   GdkRectangle draw_rect;
 616   cairo_t *cr;
 617
 618   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 619
 620   gtk_cell_renderer_pixbuf_get_size (cell, widget, cell_area,
 621                                      &pix_rect.x,
 622                                      &pix_rect.y,
 623                                      &pix_rect.width,
 624                                      &pix_rect.height);
 625
 626   pix_rect.x += cell_area->x + cell->xpad;
 627   pix_rect.y += cell_area->y + cell->ypad;
 628   pix_rect.width  -= cell->xpad * 2;
 629   pix_rect.height -= cell->ypad * 2;
 630
 631   if (!gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect) ||
 632       !gdk_rectangle_intersect (expose_area, &draw_rect, &draw_rect))
 633     return;
 634
 635   pixbuf = cellpixbuf->pixbuf;
 636
 637   if (cell->is_expander)
 638     {
 639       if (cell->is_expanded &&
 640           cellpixbuf->pixbuf_expander_open != NULL)
 641         pixbuf = cellpixbuf->pixbuf_expander_open;
 642       else if (!cell->is_expanded &&
 643                cellpixbuf->pixbuf_expander_closed != NULL)
 644         pixbuf = cellpixbuf->pixbuf_expander_closed;
 645     }
 646
 647   if (!pixbuf)
 648     return;
 649
 650   if (GTK_WIDGET_STATE (widget) == GTK_STATE_INSENSITIVE || !cell->sensitive)
 651     {
 652       GtkIconSource *source;
 653
 654       source = gtk_icon_source_new ();
 655       gtk_icon_source_set_pixbuf (source, pixbuf);
 656       /* The size here is arbitrary; since size isn't
 657        * wildcarded in the source, it isn't supposed to be
 658        * scaled by the engine function
 659        */
 660       gtk_icon_source_set_size (source, GTK_ICON_SIZE_SMALL_TOOLBAR);
 661       gtk_icon_source_set_size_wildcarded (source, FALSE);
 662
 663      invisible = gtk_style_render_icon (widget->style,
 664                                         source,
 665                                         gtk_widget_get_direction (widget),
 666                                         GTK_STATE_INSENSITIVE,
 667                                         /* arbitrary */
 668                                         (GtkIconSize)-1,
 669                                         widget,
 670                                         "gtkcellrendererpixbuf");
 671
 672      gtk_icon_source_free (source);
 673
 674      pixbuf = invisible;
 675     }
 676   else if (priv->follow_state &&
 677            (flags & (GTK_CELL_RENDERER_SELECTED|GTK_CELL_RENDERER_PRELIT)) != 0)
 678     {
 679       GtkStateType state;
 680
 681       if ((flags & GTK_CELL_RENDERER_SELECTED) != 0)
 682         {
 683           if (GTK_WIDGET_HAS_FOCUS (widget))
 684             state = GTK_STATE_SELECTED;
 685           else
 686             state = GTK_STATE_ACTIVE;
 687         }
 688       else
 689         state = GTK_STATE_PRELIGHT;
 690
 691       colorized = create_colorized_pixbuf (pixbuf,
 692                                            &widget->style->base[state]);
 693
 694       pixbuf = colorized;
 695     }
 696
 697   cr = gdk_cairo_create (window);
 698
 699   gdk_cairo_set_source_pixbuf (cr, pixbuf, pix_rect.x, pix_rect.y);
 700   gdk_cairo_rectangle (cr, &draw_rect);
 701   cairo_fill (cr);
 702
 703   cairo_destroy (cr);
 704
 705   if (invisible)
 706     g_object_unref (invisible);
 707
 708   if (colorized)
 709     g_object_unref (colorized);
 710 }
 711
 712 #define __GTK_CELL_RENDERER_PIXBUF_C__
 713 #include "gtkaliasdef.c"