/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
* Copyright (C) 2006-2007 Imendio AB
* Copyright (C) 2007-2008 Collabora Ltd.
*
* 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 St, Fifth Floor,
* Boston, MA 02110-1301 USA
*
* Authors: Xavier Claessens <xclaesse@gmail.com>
*/
#include "config.h"
#include <glib/gi18n-lib.h>
#include <gdk/gdkkeysyms.h>
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include <gdk/gdkx.h>
#include <libempathy/empathy-utils.h>
#include "empathy-avatar-image.h"
#include "empathy-ui-utils.h"
/**
* SECTION:empathy-avatar-image
* @title: EmpathyAvatarImage
* @short_description: A widget to display an avatar
* @include: libempathy-gtk/empathy-avatar-image.h
*
* #EmpathyAvatarImage is a widget which displays an avatar.
*/
/**
* EmpathyAvatarImage:
* @parent: parent object
*
* Widget which displays an avatar.
*/
#define MAX_SMALL 64
#define MAX_LARGE 400
#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyAvatarImage)
typedef struct {
GtkWidget *image;
GtkWidget *popup;
GdkPixbuf *pixbuf;
} EmpathyAvatarImagePriv;
static void avatar_image_finalize (GObject *object);
static void avatar_image_add_filter (EmpathyAvatarImage *avatar_image);
static void avatar_image_remove_filter (EmpathyAvatarImage *avatar_image);
static gboolean avatar_image_button_press_event (GtkWidget *widget,
GdkEventButton *event);
static gboolean avatar_image_button_release_event (GtkWidget *widget,
GdkEventButton *event);
G_DEFINE_TYPE (EmpathyAvatarImage, empathy_avatar_image, GTK_TYPE_EVENT_BOX);
static void
empathy_avatar_image_class_init (EmpathyAvatarImageClass *klass)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
object_class = G_OBJECT_CLASS (klass);
widget_class = GTK_WIDGET_CLASS (klass);
object_class->finalize = avatar_image_finalize;
widget_class->button_press_event = avatar_image_button_press_event;
widget_class->button_release_event = avatar_image_button_release_event;
g_type_class_add_private (object_class, sizeof (EmpathyAvatarImagePriv));
}
static void
empathy_avatar_image_init (EmpathyAvatarImage *avatar_image)
{
EmpathyAvatarImagePriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (avatar_image,
EMPATHY_TYPE_AVATAR_IMAGE, EmpathyAvatarImagePriv);
avatar_image->priv = priv;
priv->image = gtk_image_new ();
gtk_container_add (GTK_CONTAINER (avatar_image), priv->image);
empathy_avatar_image_set (avatar_image, NULL);
gtk_widget_show (priv->image);
avatar_image_add_filter (avatar_image);
}
static void
avatar_image_finalize (GObject *object)
{
EmpathyAvatarImagePriv *priv;
priv = GET_PRIV (object);
avatar_image_remove_filter (EMPATHY_AVATAR_IMAGE (object));
if (priv->popup) {
gtk_widget_destroy (priv->popup);
}
if (priv->pixbuf) {
g_object_unref (priv->pixbuf);
}
G_OBJECT_CLASS (empathy_avatar_image_parent_class)->finalize (object);
}
static GdkFilterReturn
avatar_image_filter_func (GdkXEvent *gdkxevent,
GdkEvent *event,
gpointer data)
{
XEvent *xevent = gdkxevent;
Atom atom;
EmpathyAvatarImagePriv *priv;
priv = GET_PRIV (data);
if (xevent->type == PropertyNotify) {
atom = gdk_x11_get_xatom_by_name ("_NET_CURRENT_DESKTOP");
if (xevent->xproperty.atom == atom) {
if (priv->popup) {
gtk_widget_destroy (priv->popup);
priv->popup = NULL;
}
}
}
return GDK_FILTER_CONTINUE;
}
static void
avatar_image_add_filter (EmpathyAvatarImage *avatar_image)
{
Display *display;
Window window;
gint mask;
XWindowAttributes attrs;
mask = PropertyChangeMask;
window = gdk_x11_get_default_root_xwindow ();
display = gdk_x11_get_default_xdisplay ();
gdk_error_trap_push ();
XGetWindowAttributes (display, window, &attrs);
mask |= attrs.your_event_mask;
XSelectInput (display, window, mask);
gdk_error_trap_pop_ignored ();
gdk_window_add_filter (NULL, avatar_image_filter_func, avatar_image);
}
static void
avatar_image_remove_filter (EmpathyAvatarImage *avatar_image)
{
gdk_window_remove_filter (NULL, avatar_image_filter_func, avatar_image);
}
static gboolean
avatar_image_button_press_event (GtkWidget *widget, GdkEventButton *event)
{
EmpathyAvatarImagePriv *priv;
GtkWidget *popup;
GtkWidget *frame;
GtkWidget *image;
gint x, y;
gint popup_width, popup_height;
gint width, height;
GdkPixbuf *pixbuf;
GtkAllocation allocation;
priv = GET_PRIV (widget);
if (priv->popup) {
gtk_widget_destroy (priv->popup);
priv->popup = NULL;
}
if (event->button != 1 || event->type != GDK_BUTTON_PRESS || !priv->pixbuf) {
return FALSE;
}
popup_width = gdk_pixbuf_get_width (priv->pixbuf);
popup_height = gdk_pixbuf_get_height (priv->pixbuf);
gtk_widget_get_allocation (priv->image, &allocation);
width = allocation.width;
height = allocation.height;
/* Don't show a popup if the popup is smaller then the currently avatar
* image.
*/
if (popup_height <= height && popup_width <= width) {
return TRUE;
}
pixbuf = empathy_pixbuf_scale_down_if_necessary (priv->pixbuf, MAX_LARGE);
popup_width = gdk_pixbuf_get_width (pixbuf);
popup_height = gdk_pixbuf_get_height (pixbuf);
popup = gtk_window_new (GTK_WINDOW_POPUP);
frame = gtk_frame_new (NULL);
gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_OUT);
gtk_container_add (GTK_CONTAINER (popup), frame);
image = gtk_image_new ();
gtk_container_add (GTK_CONTAINER (frame), image);
gtk_image_set_from_pixbuf (GTK_IMAGE (image), pixbuf);
g_object_unref (pixbuf);
gdk_window_get_origin (gtk_widget_get_window (priv->image), &x, &y);
x = x - (popup_width - width) / 2;
y = y - (popup_height - height) / 2;
gtk_window_move (GTK_WINDOW (popup), x, y);
priv->popup = popup;
gtk_widget_show_all (popup);
return TRUE;
}
static gboolean
avatar_image_button_release_event (GtkWidget *widget, GdkEventButton *event)
{
EmpathyAvatarImagePriv *priv;
priv = GET_PRIV (widget);
if (event->button != 1 || event->type != GDK_BUTTON_RELEASE) {
return FALSE;
}
if (!priv->popup) {
return TRUE;
}
gtk_widget_destroy (priv->popup);
priv->popup = NULL;
return TRUE;
}
/**
* empathy_avatar_image_new:
*
* Creates a new #EmpathyAvatarImage.
*
* Return value: a new #EmpathyAvatarImage
*/
GtkWidget *
empathy_avatar_image_new (void)
{
EmpathyAvatarImage *avatar_image;
avatar_image = g_object_new (EMPATHY_TYPE_AVATAR_IMAGE, NULL);
return GTK_WIDGET (avatar_image);
}
/**
* empathy_avatar_image_set:
* @avatar_image: an #EmpathyAvatarImage
* @avatar: the #EmpathyAvatar to set @avatar_image to
*
* Sets @avatar_image to display the avatar indicated by @avatar.
*/
void
empathy_avatar_image_set (EmpathyAvatarImage *avatar_image,
EmpathyAvatar *avatar)
{
EmpathyAvatarImagePriv *priv = GET_PRIV (avatar_image);
GdkPixbuf *scaled_pixbuf;
g_return_if_fail (EMPATHY_IS_AVATAR_IMAGE (avatar_image));
if (priv->pixbuf) {
g_object_unref (priv->pixbuf);
priv->pixbuf = NULL;
}
if (avatar) {
priv->pixbuf = empathy_pixbuf_from_data ((gchar *) avatar->data,
avatar->len);
}
if (!priv->pixbuf) {
gtk_image_clear (GTK_IMAGE (priv->image));
return;
}
scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (priv->pixbuf, MAX_SMALL);
gtk_image_set_from_pixbuf (GTK_IMAGE (priv->image), scaled_pixbuf);
if (scaled_pixbuf != priv->pixbuf) {
gtk_widget_set_tooltip_text (GTK_WIDGET (avatar_image),
_("Click to enlarge"));
} else {
gtk_widget_set_tooltip_text (GTK_WIDGET (avatar_image),
NULL);
}
g_object_unref (scaled_pixbuf);
}
