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                                GtkStyleContext    *context,
  39                                GtkCssDependencies *dependencies)
  40 {
  41   return _gtk_css_value_compute (_gtk_css_style_property_get_initial_value (_gtk_css_style_property_lookup_by_id (property_id)),
  42                                  property_id,
  43                                  context,
  44                                  dependencies);
  45 }
  46
  47 static gboolean
  48 gtk_css_value_initial_equal (const GtkCssValue *value1,
  49                              const GtkCssValue *value2)
  50 {
  51   return TRUE;
  52 }
  53
  54 static GtkCssValue *
  55 gtk_css_value_initial_transition (GtkCssValue *start,
  56                                   GtkCssValue *end,
  57                                   double       progress)
  58 {
  59   return NULL;
  60 }
  61
  62 static void
  63 gtk_css_value_initial_print (const GtkCssValue *value,
  64                              GString           *string)
  65 {
  66   g_string_append (string, "initial");
  67 }
  68
  69 static const GtkCssValueClass GTK_CSS_VALUE_INITIAL = {
  70   gtk_css_value_initial_free,
  71   gtk_css_value_initial_compute,
  72   gtk_css_value_initial_equal,
  73   gtk_css_value_initial_transition,
  74   gtk_css_value_initial_print
  75 };
  76
  77 static GtkCssValue initial = { &GTK_CSS_VALUE_INITIAL, 1 };
  78
  79 GtkCssValue *
  80 _gtk_css_initial_value_new (void)
  81 {
  82   return _gtk_css_value_ref (&initial);
  83 }