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 gtk_cell_renderer_pixbuf_set_property (GObject      *object,
 288                                        guint         param_id,
 289                                        const GValue *value,
 290                                        GParamSpec   *pspec)
 291 {
 292   GtkCellRendererPixbuf *cellpixbuf = GTK_CELL_RENDERER_PIXBUF (object);
 293   GtkCellRendererPixbufPrivate *priv;
 294
 295   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (object);
 296
 297   switch (param_id)
 298     {
 299     case PROP_PIXBUF:
 300       if (cellpixbuf->pixbuf)
 301         g_object_unref (cellpixbuf->pixbuf);
 302       cellpixbuf->pixbuf = (GdkPixbuf*) g_value_dup_object (value);
 303       if (cellpixbuf->pixbuf)
 304         {
 305           if (priv->stock_id)
 306             {
 307               g_free (priv->stock_id);
 308               priv->stock_id = NULL;
 309               g_object_notify (object, "stock-id");
 310             }
 311           if (priv->icon_name)
 312             {
 313               g_free (priv->icon_name);
 314               priv->icon_name = NULL;
 315               g_object_notify (object, "icon-name");
 316             }
 317           if (priv->gicon)
 318             {
 319               g_object_unref (priv->gicon);
 320               priv->gicon = NULL;
 321               g_object_notify (object, "gicon");
 322             }
 323         }
 324       break;
 325     case PROP_PIXBUF_EXPANDER_OPEN:
 326       if (cellpixbuf->pixbuf_expander_open)
 327         g_object_unref (cellpixbuf->pixbuf_expander_open);
 328       cellpixbuf->pixbuf_expander_open = (GdkPixbuf*) g_value_dup_object (value);
 329       break;
 330     case PROP_PIXBUF_EXPANDER_CLOSED:
 331       if (cellpixbuf->pixbuf_expander_closed)
 332         g_object_unref (cellpixbuf->pixbuf_expander_closed);
 333       cellpixbuf->pixbuf_expander_closed = (GdkPixbuf*) g_value_dup_object (value);
 334       break;
 335     case PROP_STOCK_ID:
 336       if (priv->stock_id)
 337         {
 338           if (cellpixbuf->pixbuf)
 339             {
 340               g_object_unref (cellpixbuf->pixbuf);
 341               cellpixbuf->pixbuf = NULL;
 342               g_object_notify (object, "pixbuf");
 343             }
 344           g_free (priv->stock_id);
 345         }
 346       priv->stock_id = g_value_dup_string (value);
 347       if (priv->stock_id)
 348         {
 349           if (cellpixbuf->pixbuf)
 350             {
 351               g_object_unref (cellpixbuf->pixbuf);
 352               cellpixbuf->pixbuf = NULL;
 353               g_object_notify (object, "pixbuf");
 354             }
 355           if (priv->icon_name)
 356             {
 357               g_free (priv->icon_name);
 358               priv->icon_name = NULL;
 359               g_object_notify (object, "icon-name");
 360             }
 361           if (priv->gicon)
 362             {
 363               g_object_unref (priv->gicon);
 364               priv->gicon = NULL;
 365               g_object_notify (object, "gicon");
 366             }
 367         }
 368       break;
 369     case PROP_STOCK_SIZE:
 370       priv->stock_size = g_value_get_uint (value);
 371       break;
 372     case PROP_STOCK_DETAIL:
 373       g_free (priv->stock_detail);
 374       priv->stock_detail = g_value_dup_string (value);
 375       break;
 376     case PROP_ICON_NAME:
 377       if (priv->icon_name)
 378         {
 379           if (cellpixbuf->pixbuf)
 380             {
 381               g_object_unref (cellpixbuf->pixbuf);
 382               cellpixbuf->pixbuf = NULL;
 383               g_object_notify (object, "pixbuf");
 384             }
 385           g_free (priv->icon_name);
 386         }
 387       priv->icon_name = g_value_dup_string (value);
 388       if (priv->icon_name)
 389         {
 390           if (cellpixbuf->pixbuf)
 391             {
 392               g_object_unref (cellpixbuf->pixbuf);
 393               cellpixbuf->pixbuf = NULL;
 394               g_object_notify (object, "pixbuf");
 395             }
 396           if (priv->stock_id)
 397             {
 398               g_free (priv->stock_id);
 399               priv->stock_id = NULL;
 400               g_object_notify (object, "stock-id");
 401             }
 402           if (priv->gicon)
 403             {
 404               g_object_unref (priv->gicon);
 405               priv->gicon = NULL;
 406               g_object_notify (object, "gicon");
 407             }
 408         }
 409       break;
 410     case PROP_FOLLOW_STATE:
 411       priv->follow_state = g_value_get_boolean (value);
 412       break;
 413     case PROP_GICON:
 414       if (priv->gicon)
 415         {
 416           if (cellpixbuf->pixbuf)
 417             {
 418               g_object_unref (cellpixbuf->pixbuf);
 419               cellpixbuf->pixbuf = NULL;
 420               g_object_notify (object, "pixbuf");
 421             }
 422           g_object_unref (priv->gicon);
 423         }
 424       priv->gicon = (GIcon *) g_value_dup_object (value);
 425       if (priv->gicon)
 426         {
 427           if (cellpixbuf->pixbuf)
 428             {
 429               g_object_unref (cellpixbuf->pixbuf);
 430               cellpixbuf->pixbuf = NULL;
 431               g_object_notify (object, "pixbuf");
 432             }
 433           if (priv->stock_id)
 434             {
 435               g_free (priv->stock_id);
 436               priv->stock_id = NULL;
 437               g_object_notify (object, "stock-id");
 438             }
 439           if (priv->icon_name)
 440             {
 441               g_free (priv->icon_name);
 442               priv->icon_name = NULL;
 443               g_object_notify (object, "icon-name");
 444             }
 445         }
 446       break;
 447     default:
 448       G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 449       break;
 450     }
 451 }
 452
 453 /**
 454  * gtk_cell_renderer_pixbuf_new:
 455  *
 456  * Creates a new #GtkCellRendererPixbuf. Adjust rendering
 457  * parameters using object properties. Object properties can be set
 458  * globally (with g_object_set()). Also, with #GtkTreeViewColumn, you
 459  * can bind a property to a value in a #GtkTreeModel. For example, you
 460  * can bind the "pixbuf" property on the cell renderer to a pixbuf value
 461  * in the model, thus rendering a different image in each row of the
 462  * #GtkTreeView.
 463  *
 464  * Return value: the new cell renderer
 465  **/
 466 GtkCellRenderer *
 467 gtk_cell_renderer_pixbuf_new (void)
 468 {
 469   return g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF, NULL);
 470 }
 471
 472 static void
 473 gtk_cell_renderer_pixbuf_create_stock_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 474                                               GtkWidget             *widget)
 475 {
 476   GtkCellRendererPixbufPrivate *priv;
 477
 478   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 479
 480   if (cellpixbuf->pixbuf)
 481     g_object_unref (cellpixbuf->pixbuf);
 482
 483   cellpixbuf->pixbuf = gtk_widget_render_icon (widget,
 484                                                priv->stock_id,
 485                                                priv->stock_size,
 486                                                priv->stock_detail);
 487
 488   g_object_notify (G_OBJECT (cellpixbuf), "pixbuf");
 489 }
 490
 491 static void
 492 gtk_cell_renderer_pixbuf_create_themed_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 493                                                GtkWidget             *widget)
 494 {
 495   GtkCellRendererPixbufPrivate *priv;
 496   GdkScreen *screen;
 497   GtkIconTheme *icon_theme;
 498   GtkSettings *settings;
 499   gint width, height;
 500   GtkIconInfo *info;
 501
 502   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 503
 504   if (cellpixbuf->pixbuf)
 505     {
 506       g_object_unref (cellpixbuf->pixbuf);
 507       cellpixbuf->pixbuf = NULL;
 508     }
 509
 510   screen = gtk_widget_get_screen (GTK_WIDGET (widget));
 511   icon_theme = gtk_icon_theme_get_for_screen (screen);
 512   settings = gtk_settings_get_for_screen (screen);
 513
 514   if (!gtk_icon_size_lookup_for_settings (settings,
 515                                           priv->stock_size,
 516                                           &width, &height))
 517     {
 518       g_warning ("Invalid icon size %u\n", priv->stock_size);
 519       width = height = 24;
 520     }
 521
 522   if (priv->icon_name)
 523     info = gtk_icon_theme_lookup_icon (icon_theme,
 524                                        priv->icon_name,
 525                                        MIN (width, height),
 526                                        GTK_ICON_LOOKUP_USE_BUILTIN);
 527   else if (priv->gicon)
 528     info = gtk_icon_theme_lookup_by_gicon (icon_theme,
 529                                            priv->gicon,
 530                                            MIN (width, height),
 531                                            GTK_ICON_LOOKUP_USE_BUILTIN);
 532   else
 533     info = NULL;
 534
 535   if (info)
 536     {
 537       GtkStyle *style;
 538
 539       style = gtk_widget_get_style (GTK_WIDGET (widget));
 540       cellpixbuf->pixbuf =
 541         gtk_icon_info_load_symbolic_for_style (info,
 542                                                style,
 543                                                GTK_STATE_NORMAL,
 544                                                NULL,
 545                                                NULL);
 546       gtk_icon_info_free (info);
 547     }
 548
 549   g_object_notify (G_OBJECT (cellpixbuf), "pixbuf");
 550 }
 551
 552 static GdkPixbuf *
 553 create_symbolic_pixbuf (GtkCellRendererPixbuf *cellpixbuf,
 554                         GtkWidget             *widget,
 555                         GtkStateType           state)
 556 {
 557   GtkCellRendererPixbufPrivate *priv;
 558   GdkScreen *screen;
 559   GtkIconTheme *icon_theme;
 560   GtkSettings *settings;
 561   gint width, height;
 562   GtkIconInfo *info;
 563   GdkPixbuf *pixbuf;
 564
 565   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cellpixbuf);
 566
 567   /* Not a named symbolic icon? */
 568   if (priv->icon_name) {
 569     if (!g_str_has_suffix (priv->icon_name, "-symbolic"))
 570       return NULL;
 571   } else if (priv->gicon) {
 572     const gchar * const *names;
 573     if (!G_IS_THEMED_ICON (priv->gicon))
 574       return NULL;
 575     names = g_themed_icon_get_names (G_THEMED_ICON (priv->gicon));
 576     if (names == NULL || !g_str_has_suffix (names[0], "-symbolic"))
 577       return NULL;
 578   } else {
 579     return NULL;
 580   }
 581
 582   screen = gtk_widget_get_screen (GTK_WIDGET (widget));
 583   icon_theme = gtk_icon_theme_get_for_screen (screen);
 584   settings = gtk_settings_get_for_screen (screen);
 585
 586   if (!gtk_icon_size_lookup_for_settings (settings,
 587                                           priv->stock_size,
 588                                           &width, &height))
 589     {
 590       g_warning ("Invalid icon size %u\n", priv->stock_size);
 591       width = height = 24;
 592     }
 593
 594
 595   if (priv->icon_name)
 596     info = gtk_icon_theme_lookup_icon (icon_theme,
 597                                        priv->icon_name,
 598                                        MIN (width, height),
 599                                        GTK_ICON_LOOKUP_USE_BUILTIN);
 600   else if (priv->gicon)
 601     info = gtk_icon_theme_lookup_by_gicon (icon_theme,
 602                                            priv->gicon,
 603                                            MIN (width, height),
 604                                            GTK_ICON_LOOKUP_USE_BUILTIN);
 605   else
 606     return NULL;
 607
 608   if (info)
 609     {
 610       GtkStyle *style;
 611
 612       style = gtk_widget_get_style (GTK_WIDGET (widget));
 613       pixbuf = gtk_icon_info_load_symbolic_for_style (info,
 614                                                       style, state,
 615                                                       NULL, NULL);
 616       gtk_icon_info_free (info);
 617       return pixbuf;
 618     }
 619
 620   return NULL;
 621 }
 622
 623 static GdkPixbuf *
 624 create_colorized_pixbuf (GdkPixbuf *src,
 625                          GdkColor  *new_color)
 626 {
 627   gint i, j;
 628   gint width, height, has_alpha, src_row_stride, dst_row_stride;
 629   gint red_value, green_value, blue_value;
 630   guchar *target_pixels;
 631   guchar *original_pixels;
 632   guchar *pixsrc;
 633   guchar *pixdest;
 634   GdkPixbuf *dest;
 635
 636   red_value = new_color->red / 255.0;
 637   green_value = new_color->green / 255.0;
 638   blue_value = new_color->blue / 255.0;
 639
 640   dest = gdk_pixbuf_new (gdk_pixbuf_get_colorspace (src),
 641                          gdk_pixbuf_get_has_alpha (src),
 642                          gdk_pixbuf_get_bits_per_sample (src),
 643                          gdk_pixbuf_get_width (src),
 644                          gdk_pixbuf_get_height (src));
 645
 646   has_alpha = gdk_pixbuf_get_has_alpha (src);
 647   width = gdk_pixbuf_get_width (src);
 648   height = gdk_pixbuf_get_height (src);
 649   src_row_stride = gdk_pixbuf_get_rowstride (src);
 650   dst_row_stride = gdk_pixbuf_get_rowstride (dest);
 651   target_pixels = gdk_pixbuf_get_pixels (dest);
 652   original_pixels = gdk_pixbuf_get_pixels (src);
 653
 654   for (i = 0; i < height; i++) {
 655     pixdest = target_pixels + i*dst_row_stride;
 656     pixsrc = original_pixels + i*src_row_stride;
 657     for (j = 0; j < width; j++) {
 658       *pixdest++ = (*pixsrc++ * red_value) >> 8;
 659       *pixdest++ = (*pixsrc++ * green_value) >> 8;
 660       *pixdest++ = (*pixsrc++ * blue_value) >> 8;
 661       if (has_alpha) {
 662         *pixdest++ = *pixsrc++;
 663       }
 664     }
 665   }
 666   return dest;
 667 }
 668
 669
 670 static void
 671 gtk_cell_renderer_pixbuf_get_size (GtkCellRenderer *cell,
 672                                    GtkWidget       *widget,
 673                                    GdkRectangle    *cell_area,
 674                                    gint            *x_offset,
 675                                    gint            *y_offset,
 676                                    gint            *width,
 677                                    gint            *height)
 678 {
 679   GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
 680   GtkCellRendererPixbufPrivate *priv;
 681   gint pixbuf_width  = 0;
 682   gint pixbuf_height = 0;
 683   gint calc_width;
 684   gint calc_height;
 685
 686   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 687
 688   if (!cellpixbuf->pixbuf)
 689     {
 690       if (priv->stock_id)
 691         gtk_cell_renderer_pixbuf_create_stock_pixbuf (cellpixbuf, widget);
 692       else if (priv->icon_name || priv->gicon)
 693         gtk_cell_renderer_pixbuf_create_themed_pixbuf (cellpixbuf, widget);
 694     }
 695
 696   if (cellpixbuf->pixbuf)
 697     {
 698       pixbuf_width  = gdk_pixbuf_get_width (cellpixbuf->pixbuf);
 699       pixbuf_height = gdk_pixbuf_get_height (cellpixbuf->pixbuf);
 700     }
 701   if (cellpixbuf->pixbuf_expander_open)
 702     {
 703       pixbuf_width  = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_open));
 704       pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_open));
 705     }
 706   if (cellpixbuf->pixbuf_expander_closed)
 707     {
 708       pixbuf_width  = MAX (pixbuf_width, gdk_pixbuf_get_width (cellpixbuf->pixbuf_expander_closed));
 709       pixbuf_height = MAX (pixbuf_height, gdk_pixbuf_get_height (cellpixbuf->pixbuf_expander_closed));
 710     }
 711
 712   calc_width  = (gint) cell->xpad * 2 + pixbuf_width;
 713   calc_height = (gint) cell->ypad * 2 + pixbuf_height;
 714
 715   if (cell_area && pixbuf_width > 0 && pixbuf_height > 0)
 716     {
 717       if (x_offset)
 718         {
 719           *x_offset = (((gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) ?
 720                         (1.0 - cell->xalign) : cell->xalign) *
 721                        (cell_area->width - calc_width));
 722           *x_offset = MAX (*x_offset, 0);
 723         }
 724       if (y_offset)
 725         {
 726           *y_offset = (cell->yalign *
 727                        (cell_area->height - calc_height));
 728           *y_offset = MAX (*y_offset, 0);
 729         }
 730     }
 731   else
 732     {
 733       if (x_offset) *x_offset = 0;
 734       if (y_offset) *y_offset = 0;
 735     }
 736
 737   if (width)
 738     *width = calc_width;
 739
 740   if (height)
 741     *height = calc_height;
 742 }
 743
 744 static void
 745 gtk_cell_renderer_pixbuf_render (GtkCellRenderer      *cell,
 746                                  GdkWindow            *window,
 747                                  GtkWidget            *widget,
 748                                  GdkRectangle         *background_area,
 749                                  GdkRectangle         *cell_area,
 750                                  GdkRectangle         *expose_area,
 751                                  GtkCellRendererState  flags)
 752
 753 {
 754   GtkCellRendererPixbuf *cellpixbuf = (GtkCellRendererPixbuf *) cell;
 755   GtkCellRendererPixbufPrivate *priv;
 756   GdkPixbuf *pixbuf;
 757   GdkPixbuf *invisible = NULL;
 758   GdkPixbuf *colorized = NULL;
 759   GdkPixbuf *symbolic = NULL;
 760   GdkRectangle pix_rect;
 761   GdkRectangle draw_rect;
 762   cairo_t *cr;
 763
 764   priv = GTK_CELL_RENDERER_PIXBUF_GET_PRIVATE (cell);
 765
 766   gtk_cell_renderer_pixbuf_get_size (cell, widget, cell_area,
 767                                      &pix_rect.x,
 768                                      &pix_rect.y,
 769                                      &pix_rect.width,
 770                                      &pix_rect.height);
 771
 772   pix_rect.x += cell_area->x + cell->xpad;
 773   pix_rect.y += cell_area->y + cell->ypad;
 774   pix_rect.width  -= cell->xpad * 2;
 775   pix_rect.height -= cell->ypad * 2;
 776
 777   if (!gdk_rectangle_intersect (cell_area, &pix_rect, &draw_rect) ||
 778       !gdk_rectangle_intersect (expose_area, &draw_rect, &draw_rect))
 779     return;
 780
 781   pixbuf = cellpixbuf->pixbuf;
 782
 783   if (cell->is_expander)
 784     {
 785       if (cell->is_expanded &&
 786           cellpixbuf->pixbuf_expander_open != NULL)
 787         pixbuf = cellpixbuf->pixbuf_expander_open;
 788       else if (!cell->is_expanded &&
 789                cellpixbuf->pixbuf_expander_closed != NULL)
 790         pixbuf = cellpixbuf->pixbuf_expander_closed;
 791     }
 792
 793   if (!pixbuf)
 794     return;
 795
 796   if (gtk_widget_get_state (widget) == GTK_STATE_INSENSITIVE || !cell->sensitive)
 797     {
 798       GtkIconSource *source;
 799
 800       source = gtk_icon_source_new ();
 801       gtk_icon_source_set_pixbuf (source, pixbuf);
 802       /* The size here is arbitrary; since size isn't
 803        * wildcarded in the source, it isn't supposed to be
 804        * scaled by the engine function
 805        */
 806       gtk_icon_source_set_size (source, GTK_ICON_SIZE_SMALL_TOOLBAR);
 807       gtk_icon_source_set_size_wildcarded (source, FALSE);
 808
 809      invisible = gtk_style_render_icon (widget->style,
 810                                         source,
 811                                         gtk_widget_get_direction (widget),
 812                                         GTK_STATE_INSENSITIVE,
 813                                         /* arbitrary */
 814                                         (GtkIconSize)-1,
 815                                         widget,
 816                                         "gtkcellrendererpixbuf");
 817
 818      gtk_icon_source_free (source);
 819
 820      pixbuf = invisible;
 821     }
 822   else if (priv->follow_state &&
 823            (flags & (GTK_CELL_RENDERER_SELECTED|GTK_CELL_RENDERER_PRELIT)) != 0)
 824     {
 825       GtkStateType state;
 826
 827       if ((flags & GTK_CELL_RENDERER_SELECTED) != 0)
 828         {
 829           if (gtk_widget_has_focus (widget))
 830             state = GTK_STATE_SELECTED;
 831           else
 832             state = GTK_STATE_ACTIVE;
 833         }
 834       else
 835         state = GTK_STATE_PRELIGHT;
 836
 837       symbolic = create_symbolic_pixbuf (cellpixbuf, widget, state);
 838       if (!symbolic) {
 839         colorized = create_colorized_pixbuf (pixbuf,
 840                                              &widget->style->base[state]);
 841
 842         pixbuf = colorized;
 843       } else {
 844         pixbuf = symbolic;
 845       }
 846     }
 847
 848   cr = gdk_cairo_create (window);
 849
 850   gdk_cairo_set_source_pixbuf (cr, pixbuf, pix_rect.x, pix_rect.y);
 851   gdk_cairo_rectangle (cr, &draw_rect);
 852   cairo_fill (cr);
 853
 854   cairo_destroy (cr);
 855
 856   if (invisible)
 857     g_object_unref (invisible);
 858
 859   if (colorized)
 860     g_object_unref (colorized);
 861
 862   if (symbolic)
 863     g_object_unref (symbolic);
 864 }
 865
 866 #define __GTK_CELL_RENDERER_PIXBUF_C__
 867 #include "gtkaliasdef.c"