moving from https://github.com/perberos/mate-desktop-environment

author: Perberos <[email protected]> 2011-12-01 22:24:23 -0300
committer: Perberos <[email protected]> 2011-12-01 22:24:23 -0300
commit: 0e004c696b0e68b2cff37a4c3315b022a35eaf43 (patch)
tree: 43261e815529cb9518ed7be37af13b846af8b26b /eel/eel-background.h
download: caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.bz2
caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.xz
1 files changed, 162 insertions, 0 deletions
diff --git a/eel/eel-background.h b/eel/eel-background.h
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+/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*-
+
+ eel-background.h: Object for the background of a widget.
+
+ Copyright (C) 2000 Eazel, Inc.
+
+ This program is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with this program; if not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+
+ Authors: Darin Adler <[email protected]>
+*/
+
+#ifndef EEL_BACKGROUND_H
+#define EEL_BACKGROUND_H
+
+/* Windows for Eel can contain backgrounds that are either tiled
+ with an image, a solid color, or a color gradient. This class manages
+ the process of loading the image if necessary and parsing the string
+ that specifies either a color or color gradient.
+
+ The color or gradient is always present, even if there's a tiled image
+ on top of it. This is used when the tiled image can't be loaded for
+ some reason (or just has not been loaded yet).
+
+ The EelBackground object is easier to modify than a GtkStyle.
+ You can just call eel_get_window_background and modify the
+ returned background directly, unlike a style, which must be copied,
+ modified and then set.
+*/
+
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+typedef struct EelBackground EelBackground;
+typedef struct EelBackgroundClass EelBackgroundClass;
+
+#define EEL_TYPE_BACKGROUND eel_background_get_type()
+#define EEL_BACKGROUND(obj) \
+ (G_TYPE_CHECK_INSTANCE_CAST ((obj), EEL_TYPE_BACKGROUND, EelBackground))
+#define EEL_BACKGROUND_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_CAST ((klass), EEL_TYPE_BACKGROUND, EelBackgroundClass))
+#define EEL_IS_BACKGROUND(obj) \
+ (G_TYPE_CHECK_INSTANCE_TYPE ((obj), EEL_TYPE_BACKGROUND))
+#define EEL_IS_BACKGROUND_CLASS(klass) \
+ (G_TYPE_CHECK_CLASS_TYPE ((klass), EEL_TYPE_BACKGROUND))
+#define EEL_BACKGROUND_GET_CLASS(obj) \
+ (G_TYPE_INSTANCE_GET_CLASS ((obj), EEL_TYPE_BACKGROUND, EelBackgroundClass))
+
+typedef enum
+{
+ EEL_BACKGROUND_TILED = 0, /* zero makes this the default placement */
+ EEL_BACKGROUND_CENTERED,
+ EEL_BACKGROUND_SCALED,
+ EEL_BACKGROUND_SCALED_ASPECT,
+ EEL_BACKGROUND_ZOOM,
+ EEL_BACKGROUND_SPANNED
+} EelBackgroundImagePlacement;
+
+GType eel_background_get_type (void);
+EelBackground * eel_background_new (void);
+
+
+/* Calls to change a background. */
+void eel_background_set_use_base (EelBackground *background,
+ gboolean use_base);
+void eel_background_set_color (EelBackground *background,
+ const char *color_or_gradient);
+void eel_background_set_image_uri (EelBackground *background,
+ const char *image_uri);
+
+void eel_background_reset (EelBackground *background);
+void eel_background_set_image_placement (EelBackground *background,
+ EelBackgroundImagePlacement placement);
+
+/* Should be TRUE for desktop background */
+void eel_background_set_desktop (EelBackground *background,
+ GtkWidget *widget,
+ gboolean is_desktop);
+gboolean eel_background_is_desktop (EelBackground *background);
+
+/* Calls to interrogate the current state of a background. */
+char * eel_background_get_color (EelBackground *background);
+char * eel_background_get_image_uri (EelBackground *background);
+EelBackgroundImagePlacement eel_background_get_image_placement (EelBackground *background);
+gboolean eel_background_is_dark (EelBackground *background);
+gboolean eel_background_is_set (EelBackground *background);
+
+/* Helper function for widgets using EelBackground */
+void eel_background_expose (GtkWidget *widget,
+ GdkEventExpose *event);
+
+/* Handles a dragged color being dropped on a widget to change the background color. */
+void eel_background_receive_dropped_color (EelBackground *background,
+ GtkWidget *widget,
+ GdkDragAction action,
+ int drop_location_x,
+ int drop_location_y,
+ const GtkSelectionData *dropped_color);
+
+/* Handles a special-case image name that means "reset to default background" too. */
+void eel_background_receive_dropped_background_image (EelBackground *background,
+ GdkDragAction action,
+ const char *image_uri);
+
+/* Gets or creates a background so that it's attached to a widget. */
+EelBackground * eel_get_widget_background (GtkWidget *widget);
+void eel_background_save_to_mateconf (EelBackground *background);
+
+/* Set activity status of background. Inactive backgrounds are drawn in the theme's INSENSITIVE color. */
+void eel_background_set_active (EelBackground *background,
+ gboolean is_active);
+
+typedef struct EelBackgroundDetails EelBackgroundDetails;
+
+struct EelBackground
+{
+ GtkObject object;
+ EelBackgroundDetails *details;
+};
+
+struct EelBackgroundClass
+{
+ GtkObjectClass parent_class;
+
+ /* This signal is emitted whenever the background settings are
+ * changed.
+ */
+ void (* settings_changed) (EelBackground *);
+
+ /* This signal is emitted whenever the appearance of the
+ * background has changed, like when the background settings are
+ * altered or when an image is loaded.
+ */
+ void (* appearance_changed) (EelBackground *);
+
+ /* This signal is emitted when image loading is over - whether it
+ * was successfully loaded or not.
+ */
+ void (* image_loading_done) (EelBackground *background, gboolean successful_load);
+
+ /* This signal is emitted when the background is reset by receiving
+ the reset property from a drag
+ */
+ void (* reset) (EelBackground *);
+
+};
+
+#endif /* EEL_BACKGROUND_H */
author	Perberos <[email protected]>	2011-12-01 22:24:23 -0300
committer	Perberos <[email protected]>	2011-12-01 22:24:23 -0300
commit	0e004c696b0e68b2cff37a4c3315b022a35eaf43 (patch)
tree	43261e815529cb9518ed7be37af13b846af8b26b /eel/eel-background.h
download	caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.bz2 caja-0e004c696b0e68b2cff37a4c3315b022a35eaf43.tar.xz