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, 572 insertions, 0 deletions

diff --git a/libempathy-gtk/empathy-avatar-chooser.c b/libempathy-gtk/empathy-avatar-chooser.c
new file mode 100644
index 000000000..2ef3de429
--- /dev/null
+++ b/libempathy-gtk/empathy-avatar-chooser.c
@@ -0,0 +1,572 @@
+/* -*- 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 library is free software; you can redistribute it and/or
+ * modify it under the terms of version 2 of the GNU General Public
+ * License as published by the Free Software Foundation.
+ *
+ * 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 library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ *
+ * Authors: Based on Novell's e-image-chooser.
+ *          Xavier Claessens <xclaesse@gmail.com>
+ */
+
+#include "config.h"
+
+#include <string.h>
+
+#include <glib/gi18n.h>
+#include <gtk/gtk.h>
+#include <libgnomevfs/gnome-vfs-ops.h>
+
+#include <libempathy/empathy-debug.h>
+#include <libempathy/empathy-conf.h>
+
+#include "empathy-avatar-chooser.h"
+#include "empathy-preferences.h"
+#include "empathy-ui-utils.h"
+
+#define DEBUG_DOMAIN "AvatarChooser"
+
+#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), EMPATHY_AVATAR_CHOOSER_TYPE, EmpathyAvatarChooserPriv))
+
+#define AVATAR_MAX 96
+#define DEFAULT_DIR DATADIR"/pixmaps/faces"
+
+typedef struct {
+	GdkPixbuf *pixbuf;
+	gchar     *image_data;
+	gsize      image_data_size;
+} EmpathyAvatarChooserPriv;
+
+static void       avatar_chooser_finalize              (GObject              *object);
+static void       avatar_chooser_set_image_from_data   (EmpathyAvatarChooser *chooser,
+							gchar                *data,
+							gsize                 size);
+static gboolean   avatar_chooser_drag_motion_cb        (GtkWidget            *widget,
+							GdkDragContext       *context,
+							gint                  x,
+							gint                  y,
+							guint                 time,
+							EmpathyAvatarChooser *chooser);
+static void       avatar_chooser_drag_leave_cb         (GtkWidget            *widget,
+							GdkDragContext       *context,
+							guint                 time,
+							EmpathyAvatarChooser *chooser);
+static gboolean   avatar_chooser_drag_drop_cb          (GtkWidget            *widget,
+							GdkDragContext       *context,
+							gint                  x,
+							gint                  y,
+							guint                 time,
+							EmpathyAvatarChooser *chooser);
+static void       avatar_chooser_drag_data_received_cb (GtkWidget            *widget,
+							GdkDragContext       *context,
+							gint                  x,
+							gint                  y,
+							GtkSelectionData     *selection_data,
+							guint                 info,
+							guint                 time,
+							EmpathyAvatarChooser *chooser);
+static void       avatar_chooser_clicked_cb            (GtkWidget            *button,
+							EmpathyAvatarChooser *chooser);
+
+enum {
+	CHANGED,
+	LAST_SIGNAL
+};
+
+static guint signals [LAST_SIGNAL];
+
+G_DEFINE_TYPE (EmpathyAvatarChooser, empathy_avatar_chooser, GTK_TYPE_BUTTON);
+
+/*
+ * Drag and drop stuff
+ */
+#define URI_LIST_TYPE "text/uri-list"
+
+enum DndTargetType {
+	DND_TARGET_TYPE_URI_LIST
+};
+
+static const GtkTargetEntry drop_types[] = {
+	{ URI_LIST_TYPE, 0, DND_TARGET_TYPE_URI_LIST },
+};
+
+static void
+empathy_avatar_chooser_class_init (EmpathyAvatarChooserClass *klass)
+{
+	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+
+	object_class->finalize = avatar_chooser_finalize;
+
+	signals[CHANGED] =
+		g_signal_new ("changed",
+			      G_TYPE_FROM_CLASS (klass),
+			      G_SIGNAL_RUN_LAST,
+			      0,
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__VOID,
+			      G_TYPE_NONE, 0);
+
+	g_type_class_add_private (object_class, sizeof (EmpathyAvatarChooserPriv));
+}
+
+static void
+empathy_avatar_chooser_init (EmpathyAvatarChooser *chooser)
+{
+	EmpathyAvatarChooserPriv *priv;
+
+	priv = GET_PRIV (chooser);
+
+	gtk_drag_dest_set (GTK_WIDGET (chooser),
+			   GTK_DEST_DEFAULT_ALL,
+			   drop_types,
+			   G_N_ELEMENTS (drop_types),
+			   GDK_ACTION_COPY);
+
+	g_signal_connect (chooser, "drag-motion",
+			  G_CALLBACK (avatar_chooser_drag_motion_cb),
+			  chooser);
+	g_signal_connect (chooser, "drag-leave",
+			  G_CALLBACK (avatar_chooser_drag_leave_cb),
+			  chooser);
+	g_signal_connect (chooser, "drag-drop",
+			  G_CALLBACK (avatar_chooser_drag_drop_cb),
+			  chooser);
+	g_signal_connect (chooser, "drag-data-received",
+			  G_CALLBACK (avatar_chooser_drag_data_received_cb),
+			  chooser);
+	g_signal_connect (chooser, "clicked",
+			  G_CALLBACK (avatar_chooser_clicked_cb),
+			  chooser);
+
+	empathy_avatar_chooser_set (chooser, NULL);
+}
+
+static void
+avatar_chooser_finalize (GObject *object)
+{
+	EmpathyAvatarChooserPriv *priv;
+
+	priv = GET_PRIV (object);
+
+	if (priv->pixbuf) {
+		g_object_unref (priv->pixbuf);
+	}
+	g_free (priv->image_data);
+
+	G_OBJECT_CLASS (empathy_avatar_chooser_parent_class)->finalize (object);
+}
+
+static void
+avatar_chooser_set_pixbuf (EmpathyAvatarChooser *chooser,
+			   GdkPixbuf            *pixbuf)
+{
+	EmpathyAvatarChooserPriv *priv = GET_PRIV (chooser);
+	GtkWidget                *image;
+	GError                   *error = NULL;
+
+	if (priv->pixbuf) {
+		g_object_unref (priv->pixbuf);
+		priv->pixbuf = NULL;
+	}
+	g_free (priv->image_data);
+	priv->image_data = NULL;
+	priv->image_data_size = 0;
+
+	if (pixbuf) {
+		priv->pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_MAX);
+	}
+
+	if (priv->pixbuf) {
+		if (!gdk_pixbuf_save_to_buffer (priv->pixbuf,
+						&priv->image_data,
+						&priv->image_data_size,
+						"png",
+						&error, NULL)) {
+			empathy_debug (DEBUG_DOMAIN, "Failed to save pixbuf: %s",
+				       error ? error->message : "No error given");
+			g_clear_error (&error);
+			g_object_unref (priv->pixbuf);
+			priv->pixbuf = NULL;
+		}
+	}
+
+	if (!priv->pixbuf) {
+		image = gtk_image_new_from_icon_name ("stock_person",
+						      GTK_ICON_SIZE_DIALOG);
+	} else {
+		image = gtk_image_new_from_pixbuf (priv->pixbuf);
+	}
+
+	gtk_button_set_image (GTK_BUTTON (chooser), image);
+	g_signal_emit (chooser, signals[CHANGED], 0);
+}
+
+static void
+avatar_chooser_set_image_from_file (EmpathyAvatarChooser *chooser,
+				    const gchar          *filename)
+{
+	GdkPixbuf *pixbuf;
+	GError    *error = NULL;
+
+	if (!(pixbuf = gdk_pixbuf_new_from_file (filename, &error))) {
+		empathy_debug (DEBUG_DOMAIN, "Failed to load pixbuf from file: %s",
+			       error ? error->message : "No error given");
+		g_clear_error (&error);
+	}
+
+	avatar_chooser_set_pixbuf (chooser, pixbuf);
+	if (pixbuf) {
+		g_object_unref (pixbuf);
+	}
+}
+
+static void
+avatar_chooser_set_image_from_data (EmpathyAvatarChooser *chooser,
+				    gchar                *data,
+				    gsize                 size)
+{
+	GdkPixbuf *pixbuf;
+
+	pixbuf = empathy_pixbuf_from_data (data, size);
+	avatar_chooser_set_pixbuf (chooser, pixbuf);
+	if (pixbuf) {
+		g_object_unref (pixbuf);
+	}
+}
+
+static gboolean
+avatar_chooser_drag_motion_cb (GtkWidget          *widget,
+			      GdkDragContext     *context,
+			      gint                x,
+			      gint                y,
+			      guint               time,
+			      EmpathyAvatarChooser *chooser)
+{
+	EmpathyAvatarChooserPriv *priv;
+	GList                  *p;
+
+	priv = GET_PRIV (chooser);
+
+	for (p = context->targets; p != NULL; p = p->next) {
+		gchar *possible_type;
+
+		possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
+
+		if (!strcmp (possible_type, URI_LIST_TYPE)) {
+			g_free (possible_type);
+			gdk_drag_status (context, GDK_ACTION_COPY, time);
+
+			return TRUE;
+		}
+
+		g_free (possible_type);
+	}
+
+	return FALSE;
+}
+
+static void
+avatar_chooser_drag_leave_cb (GtkWidget          *widget,
+			     GdkDragContext     *context,
+			     guint               time,
+			     EmpathyAvatarChooser *chooser)
+{
+}
+
+static gboolean
+avatar_chooser_drag_drop_cb (GtkWidget          *widget,
+			    GdkDragContext     *context,
+			    gint                x,
+			    gint                y,
+			    guint               time,
+			    EmpathyAvatarChooser *chooser)
+{
+	EmpathyAvatarChooserPriv *priv;
+	GList                  *p;
+
+	priv = GET_PRIV (chooser);
+
+	if (context->targets == NULL) {
+		return FALSE;
+	}
+
+	for (p = context->targets; p != NULL; p = p->next) {
+		char *possible_type;
+
+		possible_type = gdk_atom_name (GDK_POINTER_TO_ATOM (p->data));
+		if (!strcmp (possible_type, URI_LIST_TYPE)) {
+			g_free (possible_type);
+			gtk_drag_get_data (widget, context,
+					   GDK_POINTER_TO_ATOM (p->data),
+					   time);
+
+			return TRUE;
+		}
+
+		g_free (possible_type);
+	}
+
+	return FALSE;
+}
+
+static void
+avatar_chooser_drag_data_received_cb (GtkWidget          *widget,
+				     GdkDragContext     *context,
+				     gint                x,
+				     gint                y,
+				     GtkSelectionData   *selection_data,
+				     guint               info,
+				     guint               time,
+				     EmpathyAvatarChooser *chooser)
+{
+	gchar    *target_type;
+	gboolean  handled = FALSE;
+
+	target_type = gdk_atom_name (selection_data->target);
+	if (!strcmp (target_type, URI_LIST_TYPE)) {
+		GnomeVFSHandle   *handle = NULL;
+		GnomeVFSResult    result;
+		GnomeVFSFileInfo  info;
+		gchar            *uri;
+		gchar            *nl;
+		gchar            *data = NULL;
+
+		nl = strstr (selection_data->data, "\r\n");
+		if (nl) {
+			uri = g_strndup (selection_data->data,
+					 nl - (gchar*) selection_data->data);
+		} else {
+			uri = g_strdup (selection_data->data);
+		}
+
+		result = gnome_vfs_open (&handle, uri, GNOME_VFS_OPEN_READ);
+		if (result == GNOME_VFS_OK) {
+			result = gnome_vfs_get_file_info_from_handle (handle,
+								      &info,
+								      GNOME_VFS_FILE_INFO_DEFAULT);
+			if (result == GNOME_VFS_OK) {
+				GnomeVFSFileSize data_size;
+
+				data = g_malloc (info.size);
+
+				result = gnome_vfs_read (handle, data, info.size, &data_size);
+				if (result == GNOME_VFS_OK) {
+					avatar_chooser_set_image_from_data (chooser,
+									    data,
+									    data_size);
+					handled = TRUE;
+				} else {
+					g_free (data);
+				}
+			}
+
+			gnome_vfs_close (handle);
+		}
+
+		g_free (uri);
+	}
+
+	gtk_drag_finish (context, handled, FALSE, time);
+}
+
+static void
+avatar_chooser_update_preview_cb (GtkFileChooser       *file_chooser,
+				  EmpathyAvatarChooser *chooser)
+{
+	gchar *filename;
+
+	filename = gtk_file_chooser_get_preview_filename (file_chooser);
+
+	if (filename) {
+		GtkWidget *image;
+		GdkPixbuf *pixbuf = NULL;
+		GdkPixbuf *scaled_pixbuf;
+
+		pixbuf = gdk_pixbuf_new_from_file (filename, NULL);
+
+		image = gtk_file_chooser_get_preview_widget (file_chooser);
+
+		if (pixbuf) {
+			scaled_pixbuf = empathy_pixbuf_scale_down_if_necessary (pixbuf, AVATAR_MAX);
+			gtk_image_set_from_pixbuf (GTK_IMAGE (image), scaled_pixbuf);
+			g_object_unref (scaled_pixbuf);
+			g_object_unref (pixbuf);
+		} else {
+			gtk_image_set_from_stock (GTK_IMAGE (image),
+						  "gtk-dialog-question",
+						  GTK_ICON_SIZE_DIALOG);
+		}
+	}
+
+	gtk_file_chooser_set_preview_widget_active (file_chooser, TRUE);
+}
+
+static void
+avatar_chooser_response_cb (GtkWidget            *widget,
+			    gint                  response,
+			    EmpathyAvatarChooser *chooser)
+{
+	if (response == GTK_RESPONSE_OK) {
+		gchar *filename;
+		gchar *path;
+
+		filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (widget));
+		avatar_chooser_set_image_from_file (chooser, filename);
+		g_free (filename);
+
+		path = gtk_file_chooser_get_current_folder (GTK_FILE_CHOOSER (widget));
+		if (path) {
+			empathy_conf_set_string (empathy_conf_get (),
+						 EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
+						 path);
+			g_free (path);
+		}
+	}
+	else if (response == GTK_RESPONSE_NO) {
+		avatar_chooser_set_image_from_data (chooser, NULL, 0);
+	}
+
+	gtk_widget_destroy (widget);
+}
+
+static void
+avatar_chooser_clicked_cb (GtkWidget            *button,
+			   EmpathyAvatarChooser *chooser)
+{
+	GtkFileChooser *chooser_dialog;
+	GtkWidget      *image;
+	gchar          *saved_dir = NULL;
+	const gchar    *default_dir = DEFAULT_DIR;
+	const gchar    *pics_dir;
+	GtkFileFilter  *filter;
+
+	chooser_dialog = GTK_FILE_CHOOSER (
+		gtk_file_chooser_dialog_new (_("Select Your Avatar Image"),
+					     empathy_get_toplevel_window (GTK_WIDGET (chooser)),
+					     GTK_FILE_CHOOSER_ACTION_OPEN,
+					     _("No Image"),
+					     GTK_RESPONSE_NO,
+					     GTK_STOCK_CANCEL,
+					     GTK_RESPONSE_CANCEL,
+					     GTK_STOCK_OPEN,
+					     GTK_RESPONSE_OK,
+					     NULL));
+
+	/* Get special dirs */
+	empathy_conf_get_string (empathy_conf_get (),
+				 EMPATHY_PREFS_UI_AVATAR_DIRECTORY,
+				 &saved_dir);
+	if (saved_dir && !g_file_test (saved_dir, G_FILE_TEST_IS_DIR)) {
+		g_free (saved_dir);
+		saved_dir = NULL;
+	}
+	if (!g_file_test (default_dir, G_FILE_TEST_IS_DIR)) {
+		default_dir = NULL;
+	}
+	pics_dir = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
+	if (pics_dir && !g_file_test (pics_dir, G_FILE_TEST_IS_DIR)) {
+		pics_dir = NULL;
+	}
+
+	/* Set current dir to the last one or to DEFAULT_DIR or to home */
+	if (saved_dir) {
+		gtk_file_chooser_set_current_folder (chooser_dialog, saved_dir);
+	}
+	else if (pics_dir) {
+		gtk_file_chooser_set_current_folder (chooser_dialog, pics_dir);
+	}
+	else if (default_dir) {
+		gtk_file_chooser_set_current_folder (chooser_dialog, default_dir);
+	} else {
+		gtk_file_chooser_set_current_folder (chooser_dialog, g_get_home_dir ());
+	}
+
+	/* Add shortcuts to special dirs */
+	if (saved_dir) {
+		gtk_file_chooser_add_shortcut_folder (chooser_dialog, saved_dir, NULL);
+	}
+	else if (pics_dir) {
+		gtk_file_chooser_add_shortcut_folder (chooser_dialog, pics_dir, NULL);
+	}
+	if (default_dir) {
+		gtk_file_chooser_add_shortcut_folder (chooser_dialog, default_dir, NULL);
+	}
+
+	/* Setup preview image */
+	image = gtk_image_new ();
+	gtk_file_chooser_set_preview_widget (chooser_dialog, image);
+	gtk_widget_set_size_request (image, AVATAR_MAX, AVATAR_MAX);
+	gtk_widget_show (image);
+	gtk_file_chooser_set_use_preview_label (chooser_dialog,	FALSE);
+	g_signal_connect (chooser_dialog, "update-preview",
+			  G_CALLBACK (avatar_chooser_update_preview_cb),
+			  chooser);
+
+	/* Setup filers */
+	filter = gtk_file_filter_new ();
+	gtk_file_filter_set_name (filter, _("Images"));
+	gtk_file_filter_add_pixbuf_formats (filter);
+	gtk_file_chooser_add_filter (chooser_dialog, filter);
+	filter = gtk_file_filter_new ();
+	gtk_file_filter_set_name (filter, _("All Files"));
+	gtk_file_filter_add_pattern(filter, "*");
+	gtk_file_chooser_add_filter (chooser_dialog, filter);
+
+	/* Setup response */
+	gtk_dialog_set_default_response (GTK_DIALOG (chooser_dialog), GTK_RESPONSE_OK);
+	g_signal_connect (chooser_dialog, "response",
+			  G_CALLBACK (avatar_chooser_response_cb),
+			  chooser);
+
+	gtk_widget_show (GTK_WIDGET (chooser_dialog));
+	g_free (saved_dir);
+}
+
+GtkWidget *
+empathy_avatar_chooser_new (void)
+{
+	return g_object_new (EMPATHY_AVATAR_CHOOSER_TYPE, NULL);
+}
+
+void
+empathy_avatar_chooser_set (EmpathyAvatarChooser *chooser,
+			    EmpathyAvatar        *avatar)
+{
+	g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
+
+	avatar_chooser_set_image_from_data (chooser,
+					    avatar ? avatar->data : NULL,
+					    avatar ? avatar->len : 0);
+}
+
+void
+empathy_avatar_chooser_get_image_data (EmpathyAvatarChooser  *chooser,
+				       gchar                **data,
+				       gsize                 *data_size)
+{
+	EmpathyAvatarChooserPriv *priv;
+
+	g_return_if_fail (EMPATHY_IS_AVATAR_CHOOSER (chooser));
+
+	priv = GET_PRIV (chooser);
+
+	if (data) {
+		*data = priv->image_data;
+	}
+	if (*data_size) {
+		*data_size = priv->image_data_size;
+	}
+}
+