gtk2/gtk/gtkmodifierstyle.c
2011-12-06 18:01:57 +01:00

276 lines
8.0 KiB
C

/* GTK - The GIMP Toolkit
* Copyright (C) 2010 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include "gtkmodifierstyle.h"
#include "gtkintl.h"
typedef struct GtkModifierStylePrivate GtkModifierStylePrivate;
typedef struct StylePropertyValue StylePropertyValue;
struct GtkModifierStylePrivate
{
GtkStyleProperties *style;
GHashTable *color_properties;
};
enum {
CHANGED,
LAST_SIGNAL
};
static guint signals [LAST_SIGNAL] = { 0 };
static void gtk_modifier_style_provider_init (GtkStyleProviderIface *iface);
static void gtk_modifier_style_finalize (GObject *object);
G_DEFINE_TYPE_EXTENDED (GtkModifierStyle, _gtk_modifier_style, G_TYPE_OBJECT, 0,
G_IMPLEMENT_INTERFACE (GTK_TYPE_STYLE_PROVIDER,
gtk_modifier_style_provider_init));
static void
_gtk_modifier_style_class_init (GtkModifierStyleClass *klass)
{
GObjectClass *object_class;
object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_modifier_style_finalize;
signals[CHANGED] =
g_signal_new (I_("changed"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST,
0, NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
g_type_class_add_private (object_class, sizeof (GtkModifierStylePrivate));
}
static void
_gtk_modifier_style_init (GtkModifierStyle *modifier_style)
{
GtkModifierStylePrivate *priv;
priv = modifier_style->priv = G_TYPE_INSTANCE_GET_PRIVATE (modifier_style,
GTK_TYPE_MODIFIER_STYLE,
GtkModifierStylePrivate);
priv->color_properties = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
(GDestroyNotify) gdk_rgba_free);
priv->style = gtk_style_properties_new ();
}
static GtkStyleProperties *
gtk_modifier_style_get_style (GtkStyleProvider *provider,
GtkWidgetPath *path)
{
GtkModifierStylePrivate *priv;
priv = GTK_MODIFIER_STYLE (provider)->priv;
return g_object_ref (priv->style);
}
static gboolean
gtk_modifier_style_get_style_property (GtkStyleProvider *provider,
GtkWidgetPath *path,
GtkStateFlags state,
GParamSpec *pspec,
GValue *value)
{
GtkModifierStylePrivate *priv;
GdkRGBA *rgba;
GdkColor color;
gchar *str;
/* Reject non-color types for now */
if (pspec->value_type != GDK_TYPE_COLOR)
return FALSE;
priv = GTK_MODIFIER_STYLE (provider)->priv;
str = g_strdup_printf ("-%s-%s",
g_type_name (pspec->owner_type),
pspec->name);
rgba = g_hash_table_lookup (priv->color_properties, str);
g_free (str);
if (!rgba)
return FALSE;
color.red = (guint) (rgba->red * 65535.) + 0.5;
color.green = (guint) (rgba->green * 65535.) + 0.5;
color.blue = (guint) (rgba->blue * 65535.) + 0.5;
g_value_set_boxed (value, &color);
return TRUE;
}
static void
gtk_modifier_style_provider_init (GtkStyleProviderIface *iface)
{
iface->get_style = gtk_modifier_style_get_style;
iface->get_style_property = gtk_modifier_style_get_style_property;
}
static void
gtk_modifier_style_finalize (GObject *object)
{
GtkModifierStylePrivate *priv;
priv = GTK_MODIFIER_STYLE (object)->priv;
g_hash_table_destroy (priv->color_properties);
g_object_unref (priv->style);
G_OBJECT_CLASS (_gtk_modifier_style_parent_class)->finalize (object);
}
GtkModifierStyle *
_gtk_modifier_style_new (void)
{
return g_object_new (GTK_TYPE_MODIFIER_STYLE, NULL);
}
static void
modifier_style_set_color (GtkModifierStyle *style,
const gchar *prop,
GtkStateFlags state,
const GdkRGBA *color)
{
GtkModifierStylePrivate *priv;
g_return_if_fail (GTK_IS_MODIFIER_STYLE (style));
priv = style->priv;
if (color)
gtk_style_properties_set (priv->style, state,
prop, color,
NULL);
else
gtk_style_properties_unset_property (priv->style, prop, state);
g_signal_emit (style, signals[CHANGED], 0);
}
void
_gtk_modifier_style_set_background_color (GtkModifierStyle *style,
GtkStateFlags state,
const GdkRGBA *color)
{
g_return_if_fail (GTK_IS_MODIFIER_STYLE (style));
modifier_style_set_color (style, "background-color", state, color);
}
void
_gtk_modifier_style_set_color (GtkModifierStyle *style,
GtkStateFlags state,
const GdkRGBA *color)
{
g_return_if_fail (GTK_IS_MODIFIER_STYLE (style));
modifier_style_set_color (style, "color", state, color);
}
void
_gtk_modifier_style_set_font (GtkModifierStyle *style,
const PangoFontDescription *font_desc)
{
GtkModifierStylePrivate *priv;
g_return_if_fail (GTK_IS_MODIFIER_STYLE (style));
priv = style->priv;
if (font_desc)
gtk_style_properties_set (priv->style, 0,
"font", font_desc,
NULL);
else
gtk_style_properties_unset_property (priv->style, "font", 0);
g_signal_emit (style, signals[CHANGED], 0);
}
void
_gtk_modifier_style_map_color (GtkModifierStyle *style,
const gchar *name,
const GdkRGBA *color)
{
GtkModifierStylePrivate *priv;
GtkSymbolicColor *symbolic_color = NULL;
g_return_if_fail (GTK_IS_MODIFIER_STYLE (style));
g_return_if_fail (name != NULL);
priv = style->priv;
if (color)
symbolic_color = gtk_symbolic_color_new_literal (color);
gtk_style_properties_map_color (priv->style,
name, symbolic_color);
g_signal_emit (style, signals[CHANGED], 0);
}
void
_gtk_modifier_style_set_color_property (GtkModifierStyle *style,
GType widget_type,
const gchar *prop_name,
const GdkRGBA *color)
{
GtkModifierStylePrivate *priv;
const GdkRGBA *old_color;
gchar *str;
g_return_if_fail (GTK_IS_MODIFIER_STYLE (style));
g_return_if_fail (g_type_is_a (widget_type, GTK_TYPE_WIDGET));
g_return_if_fail (prop_name != NULL);
priv = style->priv;
str = g_strdup_printf ("-%s-%s", g_type_name (widget_type), prop_name);
old_color = g_hash_table_lookup (priv->color_properties, str);
if ((!color && !old_color) ||
(color && old_color && gdk_rgba_equal (color, old_color)))
{
g_free (str);
return;
}
if (color)
{
g_hash_table_insert (priv->color_properties, str,
gdk_rgba_copy (color));
}
else
{
g_hash_table_remove (priv->color_properties, str);
g_free (str);
}
g_signal_emit (style, signals[CHANGED], 0);
}