diff options
Diffstat (limited to 'panels/background/bg-source.c')
| -rw-r--r-- | panels/background/bg-source.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/panels/background/bg-source.c b/panels/background/bg-source.c new file mode 100644 index 0000000..dacf82f --- /dev/null +++ b/panels/background/bg-source.c @@ -0,0 +1,213 @@ +/* + * Copyright (C) 2010 Intel, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + * + * Author: Thomas Wood <thomas.wood@intel.com> + * + */ + +#include "bg-source.h" +#include "cc-background-item.h" + +#include <cairo-gobject.h> + +#define THUMBNAIL_WIDTH 144 +#define THUMBNAIL_HEIGHT (THUMBNAIL_WIDTH * 3 / 4) + +typedef struct +{ + GnomeDesktopThumbnailFactory *thumbnail_factory; + GListStore *store; + GtkWidget *widget; + gint thumbnail_height; + gint thumbnail_width; +} BgSourcePrivate; + +G_DEFINE_ABSTRACT_TYPE_WITH_PRIVATE (BgSource, bg_source, G_TYPE_OBJECT) + +enum +{ + PROP_LISTSTORE = 1, + PROP_WIDGET +}; + + +static void +bg_source_calculate_thumbnail_dimensions (BgSource *source) +{ + BgSourcePrivate *priv = bg_source_get_instance_private (source); + gint scale_factor; + + priv->thumbnail_height = THUMBNAIL_HEIGHT; + priv->thumbnail_width = THUMBNAIL_WIDTH; + + if (priv->widget == NULL) + return; + + scale_factor = gtk_widget_get_scale_factor (priv->widget); + if (scale_factor > 1) + { + priv->thumbnail_height *= scale_factor; + priv->thumbnail_width *= scale_factor; + } +} + +static void +bg_source_constructed (GObject *object) +{ + G_OBJECT_CLASS (bg_source_parent_class)->constructed (object); + + bg_source_calculate_thumbnail_dimensions (BG_SOURCE (object)); +} + +static void +bg_source_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + BgSource *source = BG_SOURCE (object); + + switch (property_id) + { + case PROP_LISTSTORE: + g_value_set_object (value, bg_source_get_liststore (source)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + } +} + +static void +bg_source_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + BgSource *source = BG_SOURCE (object); + BgSourcePrivate *priv = bg_source_get_instance_private (source); + + switch (property_id) + { + case PROP_WIDGET: + priv->widget = GTK_WIDGET (g_value_get_object (value)); + break; + + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); + } +} + +static void +bg_source_dispose (GObject *object) +{ + BgSource *source = BG_SOURCE (object); + BgSourcePrivate *priv = bg_source_get_instance_private (source); + + g_clear_object (&priv->thumbnail_factory); + g_clear_object (&priv->store); + + G_OBJECT_CLASS (bg_source_parent_class)->dispose (object); +} + +static void +bg_source_class_init (BgSourceClass *klass) +{ + GParamSpec *pspec; + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->constructed = bg_source_constructed; + object_class->get_property = bg_source_get_property; + object_class->set_property = bg_source_set_property; + object_class->dispose = bg_source_dispose; + + pspec = g_param_spec_object ("liststore", + "Liststore", + "Liststore used in the source", + G_TYPE_LIST_STORE, + G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); + g_object_class_install_property (object_class, PROP_LISTSTORE, pspec); + + pspec = g_param_spec_object ("widget", + "Widget", + "Widget used to view the source", + GTK_TYPE_WIDGET, + G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS); + g_object_class_install_property (object_class, PROP_WIDGET, pspec); +} + +static void +bg_source_init (BgSource *self) +{ + BgSourcePrivate *priv = bg_source_get_instance_private (self); + priv->store = g_list_store_new (CC_TYPE_BACKGROUND_ITEM); + priv->thumbnail_factory = gnome_desktop_thumbnail_factory_new (GNOME_DESKTOP_THUMBNAIL_SIZE_LARGE); +} + +GListStore* +bg_source_get_liststore (BgSource *source) +{ + BgSourcePrivate *priv; + + g_return_val_if_fail (BG_IS_SOURCE (source), NULL); + + priv = bg_source_get_instance_private (source); + return priv->store; +} + +gint +bg_source_get_scale_factor (BgSource *source) +{ + BgSourcePrivate *priv; + + g_return_val_if_fail (BG_IS_SOURCE (source), 1); + + priv = bg_source_get_instance_private (source); + return gtk_widget_get_scale_factor (priv->widget); +} + +gint +bg_source_get_thumbnail_height (BgSource *source) +{ + BgSourcePrivate *priv; + + g_return_val_if_fail (BG_IS_SOURCE (source), THUMBNAIL_HEIGHT); + + priv = bg_source_get_instance_private (source); + return priv->thumbnail_height; +} + +gint +bg_source_get_thumbnail_width (BgSource *source) +{ + BgSourcePrivate *priv; + + g_return_val_if_fail (BG_IS_SOURCE (source), THUMBNAIL_WIDTH); + + priv = bg_source_get_instance_private (source); + return priv->thumbnail_width; +} + +GnomeDesktopThumbnailFactory* +bg_source_get_thumbnail_factory (BgSource *source) +{ + BgSourcePrivate *priv; + + g_return_val_if_fail (BG_IS_SOURCE (source), NULL); + + priv = bg_source_get_instance_private (source); + return priv->thumbnail_factory; +} |