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

1 files changed, 162 insertions, 0 deletions

diff --git a/eel/eel-background.h b/eel/eel-background.h
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+++ 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 */