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gnome-control-center/capplets/background/prefs-widget.c
Bradford Hovinen 589923f166 Set gradient/wallpaper/background controls' sensitivity depending on 
2000-09-10  Bradford Hovinen  <hovinen@helixcode.com>

	* capplets/new-background-properties/prefs-widget.c
	(read_preferences): Set gradient/wallpaper/background controls'
	sensitivity depending on whether they are enabled

	* capplets/new-background-properties/applier.c
	(renderer_render_to_screen): Fixed solid, no wallpaper case to
	work correctly with preview window; don't set root pixmap if
	neither wallpaper nor gradient enabled
2000-09-10 19:42:19 +00:00

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/* -*- mode: c; style: linux -*- */
/* prefs-widget.c
* Copyright (C) 2000 Helix Code, Inc.
*
* Written by Bradford Hovinen <hovinen@helixcode.com>
*
* 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, 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.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "prefs-widget.h"
#include "applier.h"
#include <gdk-pixbuf/gdk-pixbuf-xlibrgb.h>
#define WID(str) (glade_xml_get_widget (prefs_widget->dialog_data, str))
enum {
ARG_0,
ARG_PREFERENCES
};
static CappletWidgetClass *parent_class;
static void prefs_widget_init (PrefsWidget *prefs_widget);
static void prefs_widget_class_init (PrefsWidgetClass *class);
static void prefs_widget_set_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void prefs_widget_get_arg (GtkObject *object,
GtkArg *arg,
guint arg_id);
static void read_preferences (PrefsWidget *prefs_widget,
Preferences *prefs);
static void color1_select_color_set_cb (GnomeColorPicker *cp,
guint r,
guint g,
guint b,
guint a,
PrefsWidget *prefs_widget);
static void color2_select_color_set_cb (GnomeColorPicker *cp,
guint r,
guint g,
guint b,
guint a,
PrefsWidget *prefs_widget);
static void solid_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void gradient_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void vertical_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void horizontal_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void wallpaper_entry_changed_cb (GtkEntry *e,
PrefsWidget *prefs_widget);
static void tiled_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void centered_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void scaled_aspect_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void scaled_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void disable_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget);
static void set_gradient_controls_sensitive (PrefsWidget *prefs_widget,
gboolean s);
static void set_wallpaper_controls_sensitive (PrefsWidget *prefs_widget,
gboolean s);
static void set_background_controls_sensitive (PrefsWidget *prefs_widget,
gboolean s);
guint
prefs_widget_get_type (void)
{
static guint prefs_widget_type = 0;
if (!prefs_widget_type) {
GtkTypeInfo prefs_widget_info = {
"PrefsWidget",
sizeof (PrefsWidget),
sizeof (PrefsWidgetClass),
(GtkClassInitFunc) prefs_widget_class_init,
(GtkObjectInitFunc) prefs_widget_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL
};
prefs_widget_type =
gtk_type_unique (capplet_widget_get_type (),
&prefs_widget_info);
}
return prefs_widget_type;
}
static void
prefs_widget_init (PrefsWidget *prefs_widget)
{
GtkWidget *widget;
prefs_widget->dialog_data =
glade_xml_new (GLADE_DATADIR "/background-properties.glade",
"prefs_widget");
widget = glade_xml_get_widget (prefs_widget->dialog_data,
"prefs_widget");
gtk_container_add (GTK_CONTAINER (prefs_widget), widget);
widget = glade_xml_get_widget (prefs_widget->dialog_data,
"monitor_frame");
prefs_widget->preview = applier_class_get_preview_widget ();
gtk_container_add (GTK_CONTAINER (widget), prefs_widget->preview);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"color1_select_color_set_cb",
color1_select_color_set_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"color2_select_color_set_cb",
color2_select_color_set_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"solid_select_toggled_cb",
solid_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"gradient_select_toggled_cb",
gradient_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"vertical_select_toggled_cb",
vertical_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"horizontal_select_toggled_cb",
horizontal_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"wallpaper_entry_changed_cb",
wallpaper_entry_changed_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"tiled_select_toggled_cb",
tiled_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"centered_select_toggled_cb",
centered_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"scaled_aspect_select_toggled_cb",
scaled_aspect_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"scaled_select_toggled_cb",
scaled_select_toggled_cb,
prefs_widget);
glade_xml_signal_connect_data (prefs_widget->dialog_data,
"disable_toggled_cb",
disable_toggled_cb,
prefs_widget);
}
static void
prefs_widget_class_init (PrefsWidgetClass *class)
{
GtkObjectClass *object_class;
gtk_object_add_arg_type ("PrefsWidget::preferences",
GTK_TYPE_POINTER,
GTK_ARG_READWRITE,
ARG_PREFERENCES);
object_class = GTK_OBJECT_CLASS (class);
object_class->set_arg = prefs_widget_set_arg;
object_class->get_arg = prefs_widget_get_arg;
parent_class = CAPPLET_WIDGET_CLASS
(gtk_type_class (capplet_widget_get_type ()));
}
static void
prefs_widget_set_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
PrefsWidget *prefs_widget;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_PREFS_WIDGET (object));
prefs_widget = PREFS_WIDGET (object);
switch (arg_id) {
case ARG_PREFERENCES:
if (prefs_widget->prefs)
gtk_object_unref (GTK_OBJECT (prefs_widget->prefs));
prefs_widget->prefs = GTK_VALUE_POINTER (*arg);
if (prefs_widget->prefs) {
gtk_object_ref (GTK_OBJECT (prefs_widget->prefs));
read_preferences (prefs_widget, prefs_widget->prefs);
}
break;
default:
g_warning ("Bad argument set");
break;
}
}
static void
prefs_widget_get_arg (GtkObject *object, GtkArg *arg, guint arg_id)
{
PrefsWidget *prefs_widget;
g_return_if_fail (object != NULL);
g_return_if_fail (IS_PREFS_WIDGET (object));
prefs_widget = PREFS_WIDGET (object);
switch (arg_id) {
case ARG_PREFERENCES:
GTK_VALUE_POINTER (*arg) = prefs_widget->prefs;
break;
default:
g_warning ("Bad argument get");
break;
}
}
GtkWidget *
prefs_widget_new (Preferences *prefs)
{
g_return_val_if_fail (prefs == NULL || IS_PREFERENCES (prefs), NULL);
return gtk_widget_new (prefs_widget_get_type (),
"preferences", prefs,
NULL);
}
void
prefs_widget_set_preferences (PrefsWidget *prefs_widget, Preferences *prefs)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs));
gtk_object_set (GTK_OBJECT (prefs_widget), "preferences", prefs, NULL);
}
static void
read_preferences (PrefsWidget *prefs_widget, Preferences *prefs)
{
GtkWidget *widget, *entry;
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs));
gnome_color_picker_set_i16
(GNOME_COLOR_PICKER (WID ("color1_select")),
prefs->color1->red, prefs->color1->green,
prefs->color1->blue, 0xffff);
gnome_color_picker_set_i16
(GNOME_COLOR_PICKER (WID ("color2_select")),
prefs->color2->red, prefs->color2->green,
prefs->color2->blue, 0xffff);
if (prefs->gradient_enabled) {
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("gradient_select")),
TRUE);
set_gradient_controls_sensitive (prefs_widget, TRUE);
} else {
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("solid_select")),
TRUE);
set_gradient_controls_sensitive (prefs_widget, FALSE);
}
if (prefs->orientation == ORIENTATION_VERT)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("vertical_select")),
TRUE);
else if (prefs->orientation == ORIENTATION_HORIZ)
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("horizontal_select")),
TRUE);
widget = WID ("wallpaper_entry");
if (prefs->wallpaper_sel_path)
gnome_file_entry_set_default_path
(GNOME_FILE_ENTRY (widget),
prefs->wallpaper_sel_path);
if (prefs->wallpaper_filename) {
entry = gnome_file_entry_gtk_entry
(GNOME_FILE_ENTRY (widget));
gtk_entry_set_text (GTK_ENTRY (entry),
prefs->wallpaper_filename);
set_wallpaper_controls_sensitive (prefs_widget, TRUE);
} else {
set_wallpaper_controls_sensitive (prefs_widget, FALSE);
}
switch (prefs->wallpaper_type) {
case WPTYPE_TILED:
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("tiled_select")),
TRUE);
break;
case WPTYPE_CENTERED:
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("centered_select")),
TRUE);
break;
case WPTYPE_SCALED_ASPECT:
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("scaled_aspect_select")),
TRUE);
break;
case WPTYPE_SCALED:
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("scaled_select")),
TRUE);
break;
default:
g_error ("Bad wallpaper type");
break;
}
if (prefs->enabled) {
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("disable_toggle")),
FALSE);
set_background_controls_sensitive (prefs_widget, TRUE);
} else {
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON
(WID ("disable_toggle")),
TRUE);
set_background_controls_sensitive (prefs_widget, FALSE);
}
preferences_apply_preview (prefs);
}
static void
color1_select_color_set_cb (GnomeColorPicker *cp, guint r, guint g,
guint b, guint a, PrefsWidget *prefs_widget)
{
guint32 rgb;
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
prefs_widget->prefs->color1->red = r;
prefs_widget->prefs->color1->green = g;
prefs_widget->prefs->color1->blue = b;
rgb = ((r >> 8) << 16) || ((g >> 8) << 8) || (b >> 8);
prefs_widget->prefs->color1->pixel = xlib_rgb_xpixel_from_rgb (rgb);
preferences_changed (prefs_widget->prefs);
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
color2_select_color_set_cb (GnomeColorPicker *cp, guint r, guint g,
guint b, guint a, PrefsWidget *prefs_widget)
{
guint32 rgb;
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
prefs_widget->prefs->color2->red = r;
prefs_widget->prefs->color2->green = g;
prefs_widget->prefs->color2->blue = b;
rgb = ((r >> 8) << 16) || ((g >> 8) << 8) || (b >> 8);
prefs_widget->prefs->color2->pixel = xlib_rgb_xpixel_from_rgb (rgb);
preferences_changed (prefs_widget->prefs);
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
solid_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->gradient_enabled = FALSE;
set_gradient_controls_sensitive (prefs_widget, FALSE);
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
gradient_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->gradient_enabled = TRUE;
set_gradient_controls_sensitive (prefs_widget, TRUE);
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
vertical_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->orientation = ORIENTATION_VERT;
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
horizontal_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->orientation = ORIENTATION_HORIZ;
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
wallpaper_entry_changed_cb (GtkEntry *e, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (prefs_widget->prefs->wallpaper_filename)
g_free (prefs_widget->prefs->wallpaper_filename);
prefs_widget->prefs->wallpaper_filename =
gnome_file_entry_get_full_path
(GNOME_FILE_ENTRY (WID ("wallpaper_entry")), TRUE);
if (prefs_widget->prefs->wallpaper_filename &&
strlen (prefs_widget->prefs->wallpaper_filename) &&
g_strcasecmp (prefs_widget->prefs->wallpaper_filename, "none"))
{
set_wallpaper_controls_sensitive (prefs_widget, TRUE);
prefs_widget->prefs->wallpaper_enabled = TRUE;
} else {
set_wallpaper_controls_sensitive (prefs_widget, FALSE);
prefs_widget->prefs->wallpaper_enabled = FALSE;
}
preferences_changed (prefs_widget->prefs);
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
tiled_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->wallpaper_type = WPTYPE_TILED;
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
centered_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->wallpaper_type = WPTYPE_CENTERED;
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
scaled_aspect_select_toggled_cb (GtkToggleButton *tb,
PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->wallpaper_type = WPTYPE_SCALED_ASPECT;
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
scaled_select_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb)) {
prefs_widget->prefs->wallpaper_type = WPTYPE_SCALED;
preferences_changed (prefs_widget->prefs);
}
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
disable_toggled_cb (GtkToggleButton *tb, PrefsWidget *prefs_widget)
{
g_return_if_fail (prefs_widget != NULL);
g_return_if_fail (IS_PREFS_WIDGET (prefs_widget));
g_return_if_fail (prefs_widget->prefs != NULL);
g_return_if_fail (IS_PREFERENCES (prefs_widget->prefs));
if (gtk_toggle_button_get_active (tb))
prefs_widget->prefs->enabled = FALSE;
else
prefs_widget->prefs->enabled = TRUE;
set_background_controls_sensitive (prefs_widget,
prefs_widget->prefs->enabled);
preferences_changed (prefs_widget->prefs);
capplet_widget_state_changed (CAPPLET_WIDGET (prefs_widget), TRUE);
}
static void
set_gradient_controls_sensitive (PrefsWidget *prefs_widget, gboolean s)
{
gtk_widget_set_sensitive (WID ("vertical_select"), s);
gtk_widget_set_sensitive (WID ("horizontal_select"), s);
gtk_widget_set_sensitive (WID ("color2_label"), s);
gtk_widget_set_sensitive (WID ("color2_select"), s);
}
static void
set_wallpaper_controls_sensitive (PrefsWidget *prefs_widget, gboolean s)
{
gtk_widget_set_sensitive (WID ("tiled_select"), s);
gtk_widget_set_sensitive (WID ("centered_select"), s);
gtk_widget_set_sensitive (WID ("scaled_aspect_select"), s);
gtk_widget_set_sensitive (WID ("scaled_select"), s);
}
static void
set_background_controls_sensitive (PrefsWidget *prefs_widget, gboolean s)
{
gtk_widget_set_sensitive (WID ("color_frame"), s);
gtk_widget_set_sensitive (WID ("wallpaper_frame"), s);
}
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