Implement EmpathyAvatarChooser and EmpathyAvatarImage and make use of them

2007-10-08  Xavier Claessens  <xclaesse@gmail.com>

	* libempathy-gtk/empathy-ui-utils.c:
	* libempathy-gtk/empathy-ui-utils.h:
	* libempathy-gtk/empathy-contact-widget.c:
	* libempathy-gtk/empathy-contact-widget.h:
	* libempathy-gtk/empathy-avatar-chooser.c:
	* libempathy-gtk/empathy-avatar-chooser.h:
	* libempathy-gtk/empathy-avatar-image.c:
	* libempathy-gtk/empathy-avatar-image.h:
	* libempathy-gtk/Makefile.am:
	* src/empathy.c: Implement EmpathyAvatarChooser and EmpathyAvatarImage
	and make use of them in contact information windows. That means we can
	now enlarge avatars when clicking on it and we can set our own avatar if
	we edit our own contact.


svn path=/trunk/; revision=363

1 files changed, 306 insertions, 0 deletions

diff --git a/libempathy-gtk/empathy-avatar-image.c b/libempathy-gtk/empathy-avatar-image.c
new file mode 100644
index 000000000..cc4ecbf45
--- /dev/null
+++ b/libempathy-gtk/empathy-avatar-image.c
@@ -0,0 +1,306 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * Copyright (C) 2006-2007 Imendio AB
+ * Copyright (C) 2007 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., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Authors: Xavier Claessens <xclaesse@gmail.com>
+ */
+
+#include "config.h"
+
+#include <glib/gi18n.h>
+#include <gdk/gdkkeysyms.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkx.h>
+
+#include <libempathy/empathy-debug.h>
+
+#include "empathy-avatar-image.h"
+#include "empathy-ui-utils.h"
+
+#define DEBUG_DOMAIN "AvatarImage"
+
+#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_TYPE_AVATAR_IMAGE, EmpathyAvatarImagePriv))
+
+#define MAX_SMALL  48
+#define MAX_LARGE 400
+
+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;
+
+	priv = GET_PRIV (avatar_image);
+
+	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);
+
+	switch (xevent->type) {
+	case 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;
+			}
+		}
+		break;
+	}
+
+	return GDK_FILTER_CONTINUE;
+}
+
+static void
+avatar_image_add_filter (EmpathyAvatarImage *avatar_image)
+{
+	Window     window;
+	GdkWindow *gdkwindow;
+	gint       mask;
+
+	mask = PropertyChangeMask;
+
+	window = GDK_ROOT_WINDOW ();
+	gdkwindow = gdk_xid_table_lookup (window);
+
+	gdk_error_trap_push ();
+	if (gdkwindow) {
+		XWindowAttributes attrs;
+		XGetWindowAttributes (gdk_display, window, &attrs);
+		mask |= attrs.your_event_mask;
+	}
+
+	XSelectInput (gdk_display, window, mask);
+
+	gdk_error_trap_pop ();
+
+	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;
+
+	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);
+
+	width = priv->image->allocation.width;
+	height = priv->image->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 (priv->image->window, &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;
+}
+
+GtkWidget *
+empathy_avatar_image_new (void)
+{
+	EmpathyAvatarImage *avatar_image;
+
+	avatar_image = g_object_new (EMPATHY_TYPE_AVATAR_IMAGE, NULL);
+
+	return GTK_WIDGET (avatar_image);
+}
+
+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 (avatar->data, avatar->len);
+	}
+
+	if (!priv->pixbuf) {
+		gtk_image_set_from_icon_name (GTK_IMAGE (priv->image),
+					      "stock_person",
+					      GTK_ICON_SIZE_DIALOG);
+		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);
+}
+