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/*
* Copyright (C) 2008-2009 Nick Schermer <nick@xfce.org>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#include <wrapper/wrapper-plug.h>
#include <common/panel-private.h>
static void wrapper_plug_finalize (GObject *object);
#if GTK_CHECK_VERSION (3, 0, 0)
static gboolean wrapper_plug_draw (GtkWidget *widget,
cairo_t *cr);
#else
static gboolean wrapper_plug_expose_event (GtkWidget *widget,
GdkEventExpose *event);
#endif
static void wrapper_plug_background_reset (WrapperPlug *plug);
struct _WrapperPlugClass
{
GtkPlugClass __parent__;
};
struct _WrapperPlug
{
GtkPlug __parent__;
/* background information */
gdouble background_alpha;
GdkColor *background_color;
gchar *background_image;
cairo_pattern_t *background_image_cache;
};
/* shared internal plugin name */
gchar *wrapper_name = NULL;
G_DEFINE_TYPE (WrapperPlug, wrapper_plug, GTK_TYPE_PLUG)
static void
wrapper_plug_class_init (WrapperPlugClass *klass)
{
GObjectClass *gobject_class;
GtkWidgetClass *gtkwidget_class;
gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = wrapper_plug_finalize;
gtkwidget_class = GTK_WIDGET_CLASS (klass);
#if GTK_CHECK_VERSION (3, 0, 0)
gtkwidget_class->draw = wrapper_plug_draw;
#else
gtkwidget_class->expose_event = wrapper_plug_expose_event;
#endif
}
static void
wrapper_plug_init (WrapperPlug *plug)
{
#if GTK_CHECK_VERSION (3, 0, 0)
GdkVisual *visual = NULL;
GdkScreen *screen;
GtkStyleContext *context;
GtkCssProvider *provider = gtk_css_provider_new();
gchar *css_string;
#else
GdkColormap *colormap = NULL;
GdkScreen *screen;
#endif
plug->background_alpha = 1.00;
plug->background_color = NULL;
plug->background_image = NULL;
plug->background_image_cache = NULL;
gtk_widget_set_name (GTK_WIDGET (plug), "XfcePanelWindowWrapper");
/* allow painting, else compositing won't work */
gtk_widget_set_app_paintable (GTK_WIDGET (plug), TRUE);
#if !GTK_CHECK_VERSION (3, 0, 0)
/* old versions of gtk don't support transparent tray icons, if we
* set an argb colormap on the tray, the icons won't be embedded because
* the socket-plugin implementation requires identical colormaps */
if (gtk_check_version (2, 16, 0) != NULL
&& strcmp (wrapper_name, "systray") == 0)
return;
#endif
/* set the colormap */
screen = gtk_window_get_screen (GTK_WINDOW (plug));
#if GTK_CHECK_VERSION (3, 0, 0)
visual = gdk_screen_get_rgba_visual (screen);
if (visual != NULL)
gtk_widget_set_visual (GTK_WIDGET (plug), visual);
#else
colormap = gdk_screen_get_rgba_colormap (screen);
if (colormap != NULL)
gtk_widget_set_colormap (GTK_WIDGET (plug), colormap);
#endif
#if GTK_CHECK_VERSION (3, 0, 0)
/* set the panel class */
context = gtk_widget_get_style_context (GTK_WIDGET (plug));
gtk_style_context_add_class (context, "panel");
gtk_style_context_add_class (context, "xfce4-panel");
/* We need to set the plugin button to transparent and let everything else
* be in the theme or panel's color */
css_string = g_strdup_printf (".xfce4-panel .button { background-color: transparent; }");
gtk_css_provider_load_from_data (provider, css_string, -1, NULL);
gtk_style_context_add_provider (context,
GTK_STYLE_PROVIDER (provider),
GTK_STYLE_PROVIDER_PRIORITY_APPLICATION);
g_free (css_string);
g_object_unref (provider);
#endif
}
static void
wrapper_plug_finalize (GObject *object)
{
wrapper_plug_background_reset (WRAPPER_PLUG (object));
G_OBJECT_CLASS (wrapper_plug_parent_class)->finalize (object);
}
#if GTK_CHECK_VERSION (3, 0, 0)
static gboolean
wrapper_plug_draw (GtkWidget *widget,
cairo_t *cr)
{
WrapperPlug *plug = WRAPPER_PLUG (widget);
GtkStyleContext *style;
const GdkColor *color;
GdkRGBA rgba;
gdouble alpha;
GdkPixbuf *pixbuf;
GError *error = NULL;
cairo_save (cr);
/* The "draw" signal is in widget coordinates, transform back to window */
gtk_cairo_transform_to_window (cr,
GTK_WIDGET (plug),
gtk_widget_get_window (gtk_widget_get_toplevel (GTK_WIDGET (plug))));
if (G_UNLIKELY (plug->background_image != NULL))
{
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
if (G_LIKELY (plug->background_image_cache != NULL))
{
cairo_set_source (cr, plug->background_image_cache);
cairo_paint (cr);
}
else
{
/* load the image in a pixbuf */
pixbuf = gdk_pixbuf_new_from_file (plug->background_image, &error);
if (G_LIKELY (pixbuf != NULL))
{
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
g_object_unref (G_OBJECT (pixbuf));
plug->background_image_cache = cairo_get_source (cr);
cairo_pattern_reference (plug->background_image_cache);
cairo_pattern_set_extend (plug->background_image_cache, CAIRO_EXTEND_REPEAT);
cairo_paint (cr);
}
else
{
/* print error message */
g_warning ("Background image disabled, \"%s\" could not be loaded: %s",
plug->background_image, error != NULL ? error->message : "No error");
g_error_free (error);
/* disable background image */
wrapper_plug_background_reset (plug);
}
}
}
else
{
alpha = gtk_widget_is_composited (GTK_WIDGET (plug)) ? plug->background_alpha : 1.00;
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
/* get the background gdk color */
if (plug->background_color != NULL)
{
color = plug->background_color;
cairo_set_source_rgba (cr, PANEL_GDKCOLOR_TO_DOUBLE (color), alpha);
}
else
{
style = gtk_widget_get_style_context (widget);
gtk_style_context_get_background_color (style, GTK_STATE_FLAG_NORMAL, &rgba);
rgba.alpha = alpha;
gdk_cairo_set_source_rgba (cr, &rgba);
}
/* draw the background color */
cairo_paint (cr);
}
cairo_restore(cr);
return GTK_WIDGET_CLASS (wrapper_plug_parent_class)->draw (widget, cr);
}
#else
static gboolean
wrapper_plug_expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
WrapperPlug *plug = WRAPPER_PLUG (widget);
cairo_t *cr;
const GdkColor *color;
gdouble alpha;
GdkPixbuf *pixbuf;
GError *error = NULL;
if (GTK_WIDGET_DRAWABLE (widget))
{
if (G_UNLIKELY (plug->background_image != NULL))
{
cr = gdk_cairo_create (widget->window);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
gdk_cairo_rectangle (cr, &event->area);
cairo_clip (cr);
if (G_LIKELY (plug->background_image_cache != NULL))
{
cairo_set_source (cr, plug->background_image_cache);
cairo_paint (cr);
}
else
{
/* load the image in a pixbuf */
pixbuf = gdk_pixbuf_new_from_file (plug->background_image, &error);
if (G_LIKELY (pixbuf != NULL))
{
gdk_cairo_set_source_pixbuf (cr, pixbuf, 0, 0);
g_object_unref (G_OBJECT (pixbuf));
plug->background_image_cache = cairo_get_source (cr);
cairo_pattern_reference (plug->background_image_cache);
cairo_pattern_set_extend (plug->background_image_cache, CAIRO_EXTEND_REPEAT);
cairo_paint (cr);
}
else
{
/* print error message */
g_warning ("Background image disabled, \"%s\" could not be loaded: %s",
plug->background_image, error != NULL ? error->message : "No error");
g_error_free (error);
/* disable background image */
wrapper_plug_background_reset (plug);
}
}
cairo_destroy (cr);
}
else
{
alpha = gtk_widget_is_composited (GTK_WIDGET (plug)) ? plug->background_alpha : 1.00;
if (alpha < 1.00 || plug->background_color != NULL)
{
/* get the background gdk color */
if (plug->background_color != NULL)
color = plug->background_color;
else
color = &(widget->style->bg[GTK_STATE_NORMAL]);
/* draw the background color */
cr = gdk_cairo_create (widget->window);
cairo_set_operator (cr, CAIRO_OPERATOR_SOURCE);
cairo_set_source_rgba (cr, PANEL_GDKCOLOR_TO_DOUBLE (color), alpha);
gdk_cairo_rectangle (cr, &event->area);
cairo_fill (cr);
cairo_destroy (cr);
}
}
}
return GTK_WIDGET_CLASS (wrapper_plug_parent_class)->expose_event (widget, event);
}
#endif
static void
wrapper_plug_background_reset (WrapperPlug *plug)
{
panel_return_if_fail (WRAPPER_IS_PLUG (plug));
if (plug->background_color != NULL)
gdk_color_free (plug->background_color);
plug->background_color = NULL;
if (plug->background_image_cache != NULL)
cairo_pattern_destroy (plug->background_image_cache);
plug->background_image_cache = NULL;
g_free (plug->background_image);
plug->background_image = NULL;
}
WrapperPlug *
#if GTK_CHECK_VERSION (3, 0, 0)
wrapper_plug_new (Window socket_id)
#else
wrapper_plug_new (GdkNativeWindow socket_id)
#endif
{
WrapperPlug *plug;
/* create new object */
plug = g_object_new (WRAPPER_TYPE_PLUG, NULL);
/* contruct the plug */
gtk_plug_construct (GTK_PLUG (plug), socket_id);
return plug;
}
void
wrapper_plug_set_background_alpha (WrapperPlug *plug,
gdouble alpha)
{
panel_return_if_fail (WRAPPER_IS_PLUG (plug));
panel_return_if_fail (GTK_IS_WIDGET (plug));
/* set the alpha */
plug->background_alpha = CLAMP (alpha, 0.00, 1.00);
/* redraw */
if (gtk_widget_is_composited (GTK_WIDGET (plug)))
gtk_widget_queue_draw (GTK_WIDGET (plug));
}
void
wrapper_plug_set_background_color (WrapperPlug *plug,
const gchar *color_string)
{
GdkColor color = { 0, };
panel_return_if_fail (WRAPPER_IS_PLUG (plug));
wrapper_plug_background_reset (plug);
if (color_string != NULL
&& gdk_color_parse (color_string, &color))
plug->background_color = gdk_color_copy (&color);
gtk_widget_queue_draw (GTK_WIDGET (plug));
}
void
wrapper_plug_set_background_image (WrapperPlug *plug,
const gchar *image)
{
panel_return_if_fail (WRAPPER_IS_PLUG (plug));
wrapper_plug_background_reset (plug);
plug->background_image = g_strdup (image);
gtk_widget_queue_draw (GTK_WIDGET (plug));
}
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