diff options
Diffstat (limited to 'libnautilus-private/nautilus-background-canvas-group.c')
| -rw-r--r-- | libnautilus-private/nautilus-background-canvas-group.c | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/libnautilus-private/nautilus-background-canvas-group.c b/libnautilus-private/nautilus-background-canvas-group.c deleted file mode 100644 index f0d04b0d4..000000000 --- a/libnautilus-private/nautilus-background-canvas-group.c +++ /dev/null @@ -1,223 +0,0 @@ -/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- - - nautilus-background.c: 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 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, write to the - Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. - - Author: Darin Adler <darin@eazel.com> -*/ - -#include <config.h> -#include "nautilus-background-canvas-group.h" - -#include <libgnomeui/gnome-canvas.h> -#include <libgnomeui/gnome-canvas-util.h> -#include <libart_lgpl/art_rgb_affine.h> -#include <libart_lgpl/art_rgb_rgba_affine.h> - -#include "nautilus-background.h" -#include "nautilus-gdk-extensions.h" -#include "nautilus-gtk-macros.h" - -#include <stdio.h> - -static void nautilus_background_canvas_group_initialize_class (gpointer klass); -static void nautilus_background_canvas_group_initialize (gpointer object, - gpointer klass); - -static void nautilus_background_canvas_group_update (GnomeCanvasItem *item, - double affine[6], - ArtSVP *clip_path, - gint flags); - -static void nautilus_background_canvas_group_draw (GnomeCanvasItem *item, - GdkDrawable *drawable, - int x, - int y, - int width, - int height); -static void nautilus_background_canvas_group_render (GnomeCanvasItem *item, - GnomeCanvasBuf *buffer); - - -typedef GnomeCanvasGroup NautilusBackgroundCanvasGroup; -typedef GnomeCanvasGroupClass NautilusBackgroundCanvasGroupClass; - -#define NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP \ - (nautilus_background_canvas_group_get_type ()) -#define NAUTILUS_BACKGROUND_CANVAS_GROUP(obj) \ - (GTK_CHECK_CAST ((obj), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP, NautilusBackgroundCanvasGroup)) -#define NAUTILUS_BACKGROUND_CANVAS_GROUP_CLASS(klass) \ - (GTK_CHECK_CLASS_CAST ((klass), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP, NautilusBackgroundCanvasGroupClass)) -#define NAUTILUS_IS_BACKGROUND_CANVAS_GROUP(obj) \ - (GTK_CHECK_TYPE ((obj), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP)) -#define NAUTILUS_IS_BACKGROUND_CANVAS_GROUP_CLASS(klass) \ - (GTK_CHECK_CLASS_TYPE ((klass), NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP)) - -GtkType nautilus_background_canvas_group_get_type (void); - -NAUTILUS_DEFINE_CLASS_BOILERPLATE (NautilusBackgroundCanvasGroup, nautilus_background_canvas_group, GNOME_TYPE_CANVAS_GROUP) - -static void -nautilus_background_canvas_group_initialize_class (gpointer klass) -{ - GNOME_CANVAS_ITEM_CLASS (klass)->draw = nautilus_background_canvas_group_draw; - GNOME_CANVAS_ITEM_CLASS (klass)->render = nautilus_background_canvas_group_render; - GNOME_CANVAS_ITEM_CLASS (klass)->update = nautilus_background_canvas_group_update; -} - -/* This function is for initialization code that's needed both when we're allocating - * a new NautilusBackgroundCanvasGroup object as well as when we're taking over an existing - * GnomeCanvasGroup item (replacing its klass). - */ -static void -nautilus_background_canvas_group_initialize_common (NautilusBackgroundCanvasGroup *canvas_group) -{ -#ifdef HAVE_GNOME_CANVAS_SET_DITHER - gnome_canvas_set_dither (GNOME_CANVAS_ITEM (canvas_group)->canvas, GDK_RGB_DITHER_MAX); -#endif -} - -static void -nautilus_background_canvas_group_initialize (gpointer object, gpointer klass) -{ - /* The way we currently use nautilus_background_canvas_group, assigning - * it to the klass of a root canvas object, circumvents this initialze fn. - */ - nautilus_background_canvas_group_initialize_common (NAUTILUS_BACKGROUND_CANVAS_GROUP (object)); -} - - -void -nautilus_background_canvas_group_supplant_root_class (GnomeCanvas *canvas) -{ - /* Attach ourselves to a canvas in a way that will work. - Changing the style is not sufficient. - - Since there's no signal to override in GnomeCanvas to control - drawing the background, we change the class of the canvas root. - This gives us a chance to draw the background before any of the - objects draw themselves, and has no effect on the bounds or - anything related to scrolling. - - We settled on this after less-than-thrilling results using a - canvas item as the background. The canvas item contributed to - the bounds of the canvas and had to constantly be resized. - */ - - g_assert (GNOME_IS_CANVAS (canvas)); - - if (GTK_OBJECT (canvas->root)->klass != gtk_type_class (NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP)) { - - g_assert (GTK_OBJECT (canvas->root)->klass == gtk_type_class (GNOME_TYPE_CANVAS_GROUP)); - - GTK_OBJECT (canvas->root)->klass = - gtk_type_class (NAUTILUS_TYPE_BACKGROUND_CANVAS_GROUP); - - nautilus_background_canvas_group_initialize_common (NAUTILUS_BACKGROUND_CANVAS_GROUP (canvas->root)); - } -} - -static void -nautilus_background_canvas_group_update (GnomeCanvasItem *item, - double affine[6], - ArtSVP *clip_path, - gint flags) -{ - NautilusBackground *background = nautilus_get_widget_background (GTK_WIDGET (item->canvas)); - - nautilus_background_pre_draw (background, - GTK_WIDGET (item->canvas)->allocation.width, - GTK_WIDGET (item->canvas)->allocation.height); - - NAUTILUS_CALL_PARENT (GNOME_CANVAS_ITEM_CLASS, update, (item, affine, clip_path, flags)); -} - -static void -nautilus_background_canvas_group_draw (GnomeCanvasItem *item, - GdkDrawable *drawable, - int x, - int y, - int width, - int height) -{ - NautilusBackground *background; - GdkGC *gc; - - /* Draw the background. */ - background = nautilus_get_widget_background (GTK_WIDGET (item->canvas)); - - /* If GtkStyle handled it, then we don't want to bother doing - * any additional work. It would be way slow to draw again. - */ - if (nautilus_background_is_too_complex_for_gtk_style (background)) { - /* Create a new gc each time. - * If this is a speed problem, we can create one and keep it around, - * but it's a bit more complicated to ensure that it's always compatible - * with whatever drawable is passed in. - */ - gc = gdk_gc_new (drawable); - - /* FIXME bugzilla.eazel.com 5349: - * It shouldn't be necessary to call nautilus_background_pre_draw here. - * However, nautilus_background_canvas_group_update (who should be the one - * spot we call nautilus_background_pre_draw from) doesn't seemed to get - * called prior to all drawing. - */ - nautilus_background_pre_draw (background, - GTK_WIDGET (item->canvas)->allocation.width, - GTK_WIDGET (item->canvas)->allocation.height); - - nautilus_background_draw (background, drawable, gc, x, y, width, height); - - gdk_gc_unref (gc); - } - - /* Call through to the GnomeCanvasGroup implementation, which - * will draw all the canvas items. - */ - NAUTILUS_CALL_PARENT (GNOME_CANVAS_ITEM_CLASS, draw, (item, drawable, x, y, width, height)); -} - - -/* draw the background for the anti-aliased canvas case */ -static void -nautilus_background_canvas_group_render (GnomeCanvasItem *item, GnomeCanvasBuf *buffer) -{ - NautilusBackground *background; - - background = nautilus_get_widget_background (GTK_WIDGET (item->canvas)); - if (background != NULL) { - /* FIXME bugzilla.eazel.com 5349: - * It shouldn't be necessary to call nautilus_background_pre_draw here. - * However, nautilus_background_canvas_group_update (who should be the one - * spot we call nautilus_background_pre_draw from) doesn't seemed to get - * called prior to all drawing. - */ - nautilus_background_pre_draw (background, - GTK_WIDGET (item->canvas)->allocation.width, - GTK_WIDGET (item->canvas)->allocation.height); - - nautilus_background_draw_aa (background, buffer); - } - - /* Call through to the GnomeCanvasGroup implementation, which will draw all - * the canvas items. - */ - NAUTILUS_CALL_PARENT (GNOME_CANVAS_ITEM_CLASS, render, (item, buffer)); -} |