inicial

1 files changed, 411 insertions, 0 deletions

diff --git a/shell/ev-sidebar-layers.c b/shell/ev-sidebar-layers.c
new file mode 100644
index 00000000..686cacaa
--- /dev/null
+++ b/shell/ev-sidebar-layers.c
@@ -0,0 +1,411 @@
+/* ev-sidebar-layers.c
+ *  this file is part of evince, a mate document viewer
+ *
+ * Copyright (C) 2008 Carlos Garcia Campos  <[email protected]>
+ *
+ * Evince 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.
+ *
+ * Evince 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.
+ */
+
+#include "config.h"
+
+#include <glib/gi18n.h>
+#include "gimpcellrenderertoggle.h"
+
+#include "ev-document-layers.h"
+#include "ev-sidebar-page.h"
+#include "ev-jobs.h"
+#include "ev-job-scheduler.h"
+#include "ev-stock-icons.h"
+#include "ev-sidebar-layers.h"
+
+struct _EvSidebarLayersPrivate {
+	GtkTreeView  *tree_view;
+
+	EvDocument   *document;
+	EvJob        *job;
+};
+
+enum {
+	PROP_0,
+	PROP_WIDGET
+};
+
+enum {
+	LAYERS_VISIBILITY_CHANGED,
+	N_SIGNALS
+};
+
+static void ev_sidebar_layers_page_iface_init (EvSidebarPageInterface *iface);
+static void job_finished_callback             (EvJobLayers            *job,
+					       EvSidebarLayers        *sidebar_layers);
+
+static guint signals[N_SIGNALS];
+
+G_DEFINE_TYPE_EXTENDED (EvSidebarLayers,
+                        ev_sidebar_layers,
+                        GTK_TYPE_VBOX,
+                        0, 
+                        G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE, 
+					       ev_sidebar_layers_page_iface_init))
+
+#define EV_SIDEBAR_LAYERS_GET_PRIVATE(object) \
+	(G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_LAYERS, EvSidebarLayersPrivate))
+
+static void
+ev_sidebar_layers_dispose (GObject *object)
+{
+	EvSidebarLayers *sidebar = EV_SIDEBAR_LAYERS (object);
+
+	if (sidebar->priv->job) {
+		g_signal_handlers_disconnect_by_func (sidebar->priv->job,
+						      job_finished_callback,
+						      sidebar);
+		ev_job_cancel (sidebar->priv->job);						      
+		g_object_unref (sidebar->priv->job);
+		sidebar->priv->job = NULL;
+	}
+
+	if (sidebar->priv->document) {
+		g_object_unref (sidebar->priv->document);
+		sidebar->priv->document = NULL;
+	}
+
+	G_OBJECT_CLASS (ev_sidebar_layers_parent_class)->dispose (object);
+}
+
+static void
+ev_sidebar_layers_get_property (GObject    *object,
+				guint       prop_id,
+				GValue     *value,
+				GParamSpec *pspec)
+{
+	EvSidebarLayers *ev_sidebar_layers;
+  
+	ev_sidebar_layers = EV_SIDEBAR_LAYERS (object);
+
+	switch (prop_id) {
+	        case PROP_WIDGET:
+			g_value_set_object (value, ev_sidebar_layers->priv->tree_view);
+			break;
+	        default:
+			G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+			break;
+	}
+}
+
+static GtkTreeModel *
+ev_sidebar_layers_create_loading_model (void)
+{
+	GtkTreeModel *retval;
+	GtkTreeIter   iter;
+	gchar        *markup;
+
+	/* Creates a fake model to indicate that we're loading */
+	retval = (GtkTreeModel *)gtk_list_store_new (EV_DOCUMENT_LAYERS_N_COLUMNS,
+						     G_TYPE_STRING,
+						     G_TYPE_OBJECT,
+						     G_TYPE_BOOLEAN,
+						     G_TYPE_BOOLEAN,
+						     G_TYPE_BOOLEAN,
+						     G_TYPE_INT);
+
+	gtk_list_store_append (GTK_LIST_STORE (retval), &iter);
+	markup = g_strdup_printf ("<span size=\"larger\" style=\"italic\">%s</span>", _("Loading…"));
+	gtk_list_store_set (GTK_LIST_STORE (retval), &iter,
+			    EV_DOCUMENT_LAYERS_COLUMN_TITLE, markup,
+			    EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, FALSE,
+			    EV_DOCUMENT_LAYERS_COLUMN_ENABLED, TRUE,
+			    EV_DOCUMENT_LAYERS_COLUMN_SHOWTOGGLE, FALSE,
+			    EV_DOCUMENT_LAYERS_COLUMN_RBGROUP, -1,
+			    EV_DOCUMENT_LAYERS_COLUMN_LAYER, NULL,
+			    -1);
+	g_free (markup);
+
+	return retval;
+}
+
+static gboolean
+update_kids (GtkTreeModel *model,
+	     GtkTreePath  *path,
+	     GtkTreeIter  *iter,
+	     GtkTreeIter  *parent)
+{
+	if (gtk_tree_store_is_ancestor (GTK_TREE_STORE (model), parent, iter)) {
+		gboolean visible;
+
+		gtk_tree_model_get (model, parent,
+				    EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, &visible,
+				    -1);
+		gtk_tree_store_set (GTK_TREE_STORE (model), iter,
+				    EV_DOCUMENT_LAYERS_COLUMN_ENABLED, visible,
+				    -1);
+	}
+
+	return FALSE;
+}
+
+static gboolean
+clear_rb_group (GtkTreeModel *model,
+		GtkTreePath  *path,
+		GtkTreeIter  *iter,
+		gint         *rb_group)
+{
+	gint group;
+
+	gtk_tree_model_get (model, iter,
+			    EV_DOCUMENT_LAYERS_COLUMN_RBGROUP, &group,
+			    -1);
+
+	if (group == *rb_group) {
+		gtk_tree_store_set (GTK_TREE_STORE (model), iter,
+				    EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, FALSE,
+				    -1);
+	}
+
+	return FALSE;
+}
+
+static void
+ev_sidebar_layers_visibility_changed (GtkCellRendererToggle *cell,
+				      gchar                 *path_str,
+				      EvSidebarLayers       *ev_layers)
+{
+	GtkTreeModel *model;
+	GtkTreePath  *path;
+	GtkTreeIter   iter;
+	gboolean      visible;
+	EvLayer      *layer;
+
+	model = gtk_tree_view_get_model (ev_layers->priv->tree_view);
+	
+	path = gtk_tree_path_new_from_string (path_str);
+	gtk_tree_model_get_iter (model, &iter, path);
+	gtk_tree_model_get (model, &iter,
+			    EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, &visible,
+			    EV_DOCUMENT_LAYERS_COLUMN_LAYER, &layer, 
+			    -1);
+	
+	visible = !visible;
+	if (visible) {
+		gint rb_group;
+		
+		ev_document_layers_show_layer (EV_DOCUMENT_LAYERS (ev_layers->priv->document),
+					       layer);
+
+		rb_group = ev_layer_get_rb_group (layer);
+		if (rb_group) {
+			gtk_tree_model_foreach (model,
+						(GtkTreeModelForeachFunc)clear_rb_group,
+						&rb_group);
+		}
+	} else {
+		ev_document_layers_hide_layer (EV_DOCUMENT_LAYERS (ev_layers->priv->document),
+					       layer);
+	}
+	
+	gtk_tree_store_set (GTK_TREE_STORE (model), &iter,
+			    EV_DOCUMENT_LAYERS_COLUMN_VISIBLE, visible,
+			    -1);
+
+	if (ev_layer_is_parent (layer)) {
+		gtk_tree_model_foreach (model,
+					(GtkTreeModelForeachFunc)update_kids,
+					&iter);
+	}
+	
+	gtk_tree_path_free (path);
+
+	g_signal_emit (ev_layers, signals[LAYERS_VISIBILITY_CHANGED], 0);
+}
+
+static GtkTreeView *
+ev_sidebar_layers_create_tree_view (EvSidebarLayers *ev_layers)
+{
+	GtkTreeView       *tree_view;
+	GtkTreeViewColumn *column;
+	GtkCellRenderer   *renderer;
+	
+	tree_view = GTK_TREE_VIEW (gtk_tree_view_new ());
+	gtk_tree_view_set_headers_visible (tree_view, FALSE);
+	gtk_tree_selection_set_mode (gtk_tree_view_get_selection (tree_view),
+				     GTK_SELECTION_NONE);
+
+
+	column = gtk_tree_view_column_new ();
+
+	renderer = gimp_cell_renderer_toggle_new (EV_STOCK_VISIBLE);
+	gtk_tree_view_column_pack_start (column, renderer, FALSE);
+	gtk_tree_view_column_set_attributes (column, renderer,
+					     "active", EV_DOCUMENT_LAYERS_COLUMN_VISIBLE,
+					     "activatable", EV_DOCUMENT_LAYERS_COLUMN_ENABLED,
+					     "visible", EV_DOCUMENT_LAYERS_COLUMN_SHOWTOGGLE,
+					     "sensitive", EV_DOCUMENT_LAYERS_COLUMN_ENABLED,
+					     NULL);
+	g_object_set (G_OBJECT (renderer),
+		      "xpad", 0,
+		      "ypad", 0,
+		      NULL);
+	g_signal_connect (renderer, "toggled",
+			  G_CALLBACK (ev_sidebar_layers_visibility_changed),
+			  (gpointer)ev_layers);
+
+	renderer = gtk_cell_renderer_text_new ();
+	gtk_tree_view_column_pack_start (column, renderer, TRUE);
+	gtk_tree_view_column_set_attributes (column, renderer,
+					     "markup", EV_DOCUMENT_LAYERS_COLUMN_TITLE,
+					     "sensitive", EV_DOCUMENT_LAYERS_COLUMN_ENABLED,
+					     NULL);
+	g_object_set (G_OBJECT (renderer), "ellipsize", PANGO_ELLIPSIZE_END, NULL);
+	
+	gtk_tree_view_append_column (tree_view, column);
+
+	return tree_view;
+}
+
+static void
+ev_sidebar_layers_init (EvSidebarLayers *ev_layers)
+{
+	GtkWidget    *swindow;
+	GtkTreeModel *model;
+	
+	ev_layers->priv = EV_SIDEBAR_LAYERS_GET_PRIVATE (ev_layers);
+
+	swindow = gtk_scrolled_window_new (NULL, NULL);
+	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
+					GTK_POLICY_NEVER,
+					GTK_POLICY_AUTOMATIC);
+	gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
+					     GTK_SHADOW_IN);
+	/* Data Model */
+	model = ev_sidebar_layers_create_loading_model ();
+
+	/* Layers list */
+	ev_layers->priv->tree_view = ev_sidebar_layers_create_tree_view (ev_layers);
+	gtk_tree_view_set_model (ev_layers->priv->tree_view, model);
+	g_object_unref (model);
+
+	gtk_container_add (GTK_CONTAINER (swindow),
+			   GTK_WIDGET (ev_layers->priv->tree_view));
+
+	gtk_container_add (GTK_CONTAINER (ev_layers), swindow);
+	gtk_widget_show_all (GTK_WIDGET (ev_layers));
+}
+
+static void
+ev_sidebar_layers_class_init (EvSidebarLayersClass *ev_layers_class)
+{
+	GObjectClass *g_object_class = G_OBJECT_CLASS (ev_layers_class);
+
+	g_object_class->get_property = ev_sidebar_layers_get_property;
+	g_object_class->dispose = ev_sidebar_layers_dispose;
+
+	g_type_class_add_private (g_object_class, sizeof (EvSidebarLayersPrivate));
+
+	g_object_class_override_property (g_object_class, PROP_WIDGET, "main-widget");
+
+	signals[LAYERS_VISIBILITY_CHANGED] =
+		g_signal_new ("layers_visibility_changed",
+			      G_TYPE_FROM_CLASS (g_object_class),
+			      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
+			      G_STRUCT_OFFSET (EvSidebarLayersClass, layers_visibility_changed),
+			      NULL, NULL,
+			      g_cclosure_marshal_VOID__VOID,
+			      G_TYPE_NONE, 0, G_TYPE_NONE);
+}
+
+GtkWidget *
+ev_sidebar_layers_new (void)
+{
+	return GTK_WIDGET (g_object_new (EV_TYPE_SIDEBAR_LAYERS, NULL));
+}
+
+static void
+job_finished_callback (EvJobLayers     *job,
+		       EvSidebarLayers *sidebar_layers)
+{
+	EvSidebarLayersPrivate *priv;
+
+	priv = sidebar_layers->priv;
+
+	gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), job->model);
+	
+	g_object_unref (job);
+	priv->job = NULL;
+}
+
+static void
+ev_sidebar_layers_document_changed_cb (EvDocumentModel *model,
+				       GParamSpec      *pspec,
+				       EvSidebarLayers *sidebar_layers)
+{
+	EvDocument *document = ev_document_model_get_document (model);
+	EvSidebarLayersPrivate *priv = sidebar_layers->priv;
+
+	if (!EV_IS_DOCUMENT_LAYERS (document))
+		return;
+
+	if (priv->document) {
+		gtk_tree_view_set_model (GTK_TREE_VIEW (priv->tree_view), NULL);
+		g_object_unref (priv->document);
+	}
+
+	priv->document = g_object_ref (document);
+
+	if (priv->job) {
+		g_signal_handlers_disconnect_by_func (priv->job,
+						      job_finished_callback,
+						      sidebar_layers);
+		g_object_unref (priv->job);
+	}
+
+	priv->job = ev_job_layers_new (document);
+	g_signal_connect (priv->job, "finished",
+			  G_CALLBACK (job_finished_callback),
+			  sidebar_layers);
+	/* The priority doesn't matter for this job */
+	ev_job_scheduler_push_job (priv->job, EV_JOB_PRIORITY_NONE);
+}
+
+static void
+ev_sidebar_layers_set_model (EvSidebarPage   *sidebar_page,
+			     EvDocumentModel *model)
+{
+	g_signal_connect (model, "notify::document",
+			  G_CALLBACK (ev_sidebar_layers_document_changed_cb),
+			  sidebar_page);
+}
+
+static gboolean
+ev_sidebar_layers_support_document (EvSidebarPage *sidebar_page,
+				    EvDocument    *document)
+{
+	return (EV_IS_DOCUMENT_LAYERS (document) &&
+		ev_document_layers_has_layers (EV_DOCUMENT_LAYERS (document)));
+}
+
+static const gchar*
+ev_sidebar_layers_get_label (EvSidebarPage *sidebar_page)
+{
+	return _("Layers");
+}
+
+static void
+ev_sidebar_layers_page_iface_init (EvSidebarPageInterface *iface)
+{
+	iface->support_document = ev_sidebar_layers_support_document;
+	iface->set_model = ev_sidebar_layers_set_model;
+	iface->get_label = ev_sidebar_layers_get_label;
+}
+