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

   1 /* GTK - The GIMP Toolkit
   2  * Copyright (C) 2011 Red Hat, Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser 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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include "gtkcssinitialvalueprivate.h"
  21
  22 #include "gtkcssstylepropertyprivate.h"
  23
  24 struct _GtkCssValue {
  25   GTK_CSS_VALUE_BASE
  26 };
  27
  28 static void
  29 gtk_css_value_initial_free (GtkCssValue *value)
  30 {
  31   /* Can only happen if the unique value gets unreffed too often */
  32   g_assert_not_reached ();
  33 }
  34
  35 static GtkCssValue *
  36 gtk_css_value_initial_compute (GtkCssValue             *value,
  37                                guint                    property_id,
  38                                GtkStyleProviderPrivate *provider,
  39                                GtkCssComputedValues    *values,
  40                                GtkCssComputedValues    *parent_values,
  41                                GtkCssDependencies      *dependencies)
  42 {
  43   return _gtk_css_value_compute (_gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (property_id)),
  44                                  property_id,
  45                                  provider,
  46                                  values,
  47                                  parent_values,
  48                                  dependencies);
  49 }
  50
  51 static gboolean
  52 gtk_css_value_initial_equal (const GtkCssValue *value1,
  53                              const GtkCssValue *value2)
  54 {
  55   return TRUE;
  56 }
  57
  58 static GtkCssValue *
  59 gtk_css_value_initial_transition (GtkCssValue *start,
  60                                   GtkCssValue *end,
  61                                   guint        property_id,
  62                                   double       progress)
  63 {
  64   return NULL;
  65 }
  66
  67 static void
  68 gtk_css_value_initial_print (const GtkCssValue *value,
  69                              GString           *string)
  70 {
  71   g_string_append (string, "initial");
  72 }
  73
  74 static const GtkCssValueClass GTK_CSS_VALUE_INITIAL = {
  75   gtk_css_value_initial_free,
  76   gtk_css_value_initial_compute,
  77   gtk_css_value_initial_equal,
  78   gtk_css_value_initial_transition,
  79   gtk_css_value_initial_print
  80 };
  81
  82 static GtkCssValue initial = { &GTK_CSS_VALUE_INITIAL, 1 };
  83
  84 GtkCssValue *
  85 _gtk_css_initial_value_new (void)
  86 {
  87   return _gtk_css_value_ref (&initial);
  88 }