Replace LdLibraryToolbar with LdLibraryPane.

7 files changed, 32 insertions, 934 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2199f07..282e49c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -124,7 +124,6 @@ set (liblogdiag_SOURCES
 	liblogdiag/ld-diagram-connection.c
 	liblogdiag/ld-diagram-view.c
 	liblogdiag/ld-library.c
-	liblogdiag/ld-library-toolbar.c
 	liblogdiag/ld-library-pane.c
 	liblogdiag/ld-symbol-category.c
 	liblogdiag/ld-symbol.c
@@ -142,7 +141,6 @@ set (liblogdiag_HEADERS
 	liblogdiag/ld-diagram-connection.h
 	liblogdiag/ld-diagram-view.h
 	liblogdiag/ld-library.h
-	liblogdiag/ld-library-toolbar.h
 	liblogdiag/ld-library-pane.h
 	liblogdiag/ld-symbol-category.h
 	liblogdiag/ld-symbol.h
diff --git a/liblogdiag/ld-library-toolbar.c b/liblogdiag/ld-library-toolbar.c
deleted file mode 100644
index a4fa383..0000000
--- a/liblogdiag/ld-library-toolbar.c
+++ /dev/null
@@ -1,784 +0,0 @@
-/*
- * ld-library-toolbar.c
- *
- * This file is a part of logdiag.
- * Copyright Přemysl Janouch 2011. All rights reserved.
- *
- * See the file LICENSE for licensing information.
- *
- */
-
-#include "liblogdiag.h"
-#include "config.h"
-
-
-/**
- * SECTION:ld-library-toolbar
- * @short_description: A library toolbar
- * @see_also: #LdLibrary
- *
- * #LdLibraryToolbar enables the user to choose symbols from an #LdLibrary.
- */
-
-#define LIBRARY_TOOLBAR_ICON_WIDTH 32
-
-/*
- * SymbolMenuItem:
- *
- * Data related to a symbol in an open symbol menu.
- */
-typedef struct _SymbolMenuItem SymbolMenuItem;
-
-struct _SymbolMenuItem
-{
-	LdSymbol *symbol;
-	gchar *klass;
-
-	gint width;
-	gdouble dx;
-	gdouble scale;
-};
-
-/*
- * SymbolMenuData:
- *
- * Data related to the currently opened symbol menu.
- */
-typedef struct _SymbolMenuData SymbolMenuData;
-
-struct _SymbolMenuData
-{
-	GtkToggleButton *active_button;
-
-	SymbolMenuItem *items;
-	gint n_items;
-	gint active_item;
-
-	gint menu_width;
-	gint menu_height;
-	gint menu_y;
-};
-
-enum
-{
-	VIEW_HANDLER_EXPOSE,
-	VIEW_HANDLER_MOTION_NOTIFY,
-	VIEW_HANDLER_BUTTON_PRESS,
-	VIEW_HANDLER_BUTTON_RELEASE,
-	VIEW_HANDLER_COUNT
-};
-
-/*
- * LdLibraryToolbarPrivate:
- * @library: a library object assigned as a model.
- * @view: a view widget for showing symbol menus.
- * @view_handlers: signal handlers that hook the view.
- * @symbol_menu: data related to menus.
- */
-struct _LdLibraryToolbarPrivate
-{
-	LdLibrary *library;
-	LdDiagramView *view;
-	gulong view_handlers[VIEW_HANDLER_COUNT];
-	SymbolMenuData symbol_menu;
-};
-
-enum
-{
-	PROP_0,
-	PROP_LIBRARY,
-	PROP_VIEW
-};
-
-static void ld_library_toolbar_get_property (GObject *object, guint property_id,
-	GValue *value, GParamSpec *pspec);
-static void ld_library_toolbar_set_property (GObject *object, guint property_id,
-	const GValue *value, GParamSpec *pspec);
-static void ld_library_toolbar_dispose (GObject *gobject);
-
-static void reload_library (LdLibraryToolbar *self);
-static void load_category_cb (gpointer data, gpointer user_data);
-static GdkPixbuf *recolor_pixbuf (GdkPixbuf *pbuf, GdkColor *color);
-
-static void redraw_symbol_menu (LdLibraryToolbar *self);
-static void emit_symbol_signal (LdLibraryToolbar *self,
-	guint signal_id, gint menu_index);
-static void on_category_toggle (GtkToggleButton *toggle_button,
-	gpointer user_data);
-
-static inline void block_view_handlers (LdLibraryToolbar *self);
-static inline void unblock_view_handlers (LdLibraryToolbar *self);
-static inline void disconnect_view_handlers (LdLibraryToolbar *self);
-static gboolean on_view_exposed (GtkWidget *widget,
-	GdkEventExpose *event, gpointer user_data);
-static gboolean on_view_motion_notify (GtkWidget *widget,
-	GdkEventMotion *event, gpointer user_data);
-static gboolean on_view_button_press (GtkWidget *widget,
-	GdkEventButton *event, gpointer user_data);
-static gboolean on_view_button_release (GtkWidget *widget,
-	GdkEventButton *event, gpointer user_data);
-
-
-G_DEFINE_TYPE (LdLibraryToolbar, ld_library_toolbar, GTK_TYPE_TOOLBAR);
-
-static void
-ld_library_toolbar_class_init (LdLibraryToolbarClass *klass)
-{
-	GObjectClass *object_class;
-	GParamSpec *pspec;
-
-	object_class = G_OBJECT_CLASS (klass);
-	object_class->get_property = ld_library_toolbar_get_property;
-	object_class->set_property = ld_library_toolbar_set_property;
-	object_class->dispose = ld_library_toolbar_dispose;
-
-/**
- * LdLibraryToolbar:library:
- *
- * The #LdLibrary that this toolbar retrieves symbols from.
- */
-	pspec = g_param_spec_object ("library", "Library",
-		"The library that this toolbar retrieves symbols from.",
-		LD_TYPE_LIBRARY, G_PARAM_READWRITE);
-	g_object_class_install_property (object_class, PROP_LIBRARY, pspec);
-
-/**
- * LdLibraryToolbar:view:
- *
- * The #LdDiagramView widget misused for showing symbol menus.
- */
-	pspec = g_param_spec_object ("view", "View",
-		"The view widget misused for showing symbol menus.",
-		LD_TYPE_DIAGRAM_VIEW, G_PARAM_READWRITE);
-	g_object_class_install_property (object_class, PROP_VIEW, pspec);
-
-/**
- * LdLibraryToolbar::symbol-chosen:
- * @self: an #LdLibraryToolbar object.
- * @symbol: the chosen #LdSymbol object.
- * @klass: location of the symbol within the library.
- *
- * A symbol has been chosen.
- */
-	klass->symbol_chosen_signal = g_signal_new
-		("symbol-chosen", G_TYPE_FROM_CLASS (klass),
-		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
-		ld_marshal_VOID__OBJECT_STRING,
-		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
-		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
-
-/**
- * LdLibraryToolbar::symbol-selected:
- * @self: an #LdLibraryToolbar object.
- * @symbol: the selected #LdSymbol object.
- * @klass: location of the symbol within the library.
- *
- * A symbol has been selected.
- */
-	klass->symbol_selected_signal = g_signal_new
-		("symbol-selected", G_TYPE_FROM_CLASS (klass),
-		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
-		ld_marshal_VOID__OBJECT_STRING,
-		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
-		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
-
-/**
- * LdLibraryToolbar::symbol-deselected:
- * @self: an #LdLibraryToolbar object.
- * @symbol: the deselected #LdSymbol object.
- * @klass: location of the symbol within the library.
- *
- * A symbol has been deselected.
- */
-	klass->symbol_deselected_signal = g_signal_new
-		("symbol-deselected", G_TYPE_FROM_CLASS (klass),
-		G_SIGNAL_RUN_LAST, 0, NULL, NULL,
-		ld_marshal_VOID__OBJECT_STRING,
-		G_TYPE_NONE, 2, LD_TYPE_SYMBOL,
-		G_TYPE_STRING | G_SIGNAL_TYPE_STATIC_SCOPE);
-
-	g_type_class_add_private (klass, sizeof (LdLibraryToolbarPrivate));
-}
-
-static void
-ld_library_toolbar_init (LdLibraryToolbar *self)
-{
-	self->priv = G_TYPE_INSTANCE_GET_PRIVATE
-		(self, LD_TYPE_LIBRARY_TOOLBAR, LdLibraryToolbarPrivate);
-}
-
-static void
-ld_library_toolbar_dispose (GObject *gobject)
-{
-	LdLibraryToolbar *self;
-
-	self = LD_LIBRARY_TOOLBAR (gobject);
-
-	ld_library_toolbar_set_library (self, NULL);
-	ld_library_toolbar_set_view (self, NULL);
-
-	/* Chain up to the parent class. */
-	G_OBJECT_CLASS (ld_library_toolbar_parent_class)->dispose (gobject);
-}
-
-static void
-ld_library_toolbar_get_property (GObject *object, guint property_id,
-	GValue *value, GParamSpec *pspec)
-{
-	LdLibraryToolbar *self;
-
-	self = LD_LIBRARY_TOOLBAR (object);
-	switch (property_id)
-	{
-	case PROP_LIBRARY:
-		g_value_set_object (value, ld_library_toolbar_get_library (self));
-		break;
-	case PROP_VIEW:
-		g_value_set_object (value, ld_library_toolbar_get_view (self));
-		break;
-	default:
-		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
-	}
-}
-
-static void
-ld_library_toolbar_set_property (GObject *object, guint property_id,
-	const GValue *value, GParamSpec *pspec)
-{
-	LdLibraryToolbar *self;
-
-	self = LD_LIBRARY_TOOLBAR (object);
-	switch (property_id)
-	{
-	case PROP_LIBRARY:
-		ld_library_toolbar_set_library (self,
-			LD_LIBRARY (g_value_get_object (value)));
-		break;
-	case PROP_VIEW:
-		ld_library_toolbar_set_view (self,
-			LD_DIAGRAM_VIEW (g_value_get_object (value)));
-		break;
-	default:
-		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
-	}
-}
-
-
-/**
- * ld_library_toolbar_new:
- *
- * Create an instance.
- */
-GtkWidget *
-ld_library_toolbar_new (void)
-{
-	return g_object_new (LD_TYPE_LIBRARY_TOOLBAR, NULL);
-}
-
-/**
- * ld_library_toolbar_set_library:
- * @self: an #LdLibraryToolbar object.
- * @library: (allow-none): the library to be assigned to the toolbar.
- *
- * Assign an #LdLibrary object to the toolbar.
- */
-void
-ld_library_toolbar_set_library (LdLibraryToolbar *self, LdLibrary *library)
-{
-	g_return_if_fail (LD_IS_LIBRARY_TOOLBAR (self));
-	g_return_if_fail (LD_IS_LIBRARY (library) || library == NULL);
-
-	if (self->priv->library)
-	{
-		g_signal_handlers_disconnect_by_func (self->priv->library,
-			reload_library, self);
-		g_object_unref (self->priv->library);
-	}
-
-	self->priv->library = library;
-
-	if (library)
-	{
-		g_signal_connect_data (library, "changed",
-			G_CALLBACK (reload_library), self,
-			NULL, G_CONNECT_AFTER | G_CONNECT_SWAPPED);
-		g_object_ref (library);
-	}
-	reload_library (self);
-	g_object_notify (G_OBJECT (self), "library");
-}
-
-/**
- * ld_library_toolbar_get_library:
- * @self: an #LdLibraryToolbar object.
- *
- * Return value: (transfer none): the #LdLibrary object
- *               assigned to the toolbar.
- */
-LdLibrary *
-ld_library_toolbar_get_library (LdLibraryToolbar *self)
-{
-	g_return_val_if_fail (LD_IS_LIBRARY_TOOLBAR (self), NULL);
-	return self->priv->library;
-}
-
-/**
- * ld_library_toolbar_set_view:
- * @self: an #LdLibraryToolbar object.
- * @view: (allow-none): the widget to be assigned to the toolbar.
- *
- * Assign an #LdDiagramView widget to the toolbar.
- */
-void
-ld_library_toolbar_set_view (LdLibraryToolbar *self, LdDiagramView *view)
-{
-	g_return_if_fail (LD_IS_LIBRARY_TOOLBAR (self));
-	g_return_if_fail (LD_IS_DIAGRAM_VIEW (view) || view == NULL);
-
-	if (self->priv->view)
-	{
-		disconnect_view_handlers (self);
-		g_object_unref (self->priv->view);
-	}
-
-	self->priv->view = view;
-
-	if (view)
-	{
-		self->priv->view_handlers[VIEW_HANDLER_EXPOSE]
-			= g_signal_connect (view, "expose-event",
-			G_CALLBACK (on_view_exposed), self);
-		self->priv->view_handlers[VIEW_HANDLER_MOTION_NOTIFY]
-			= g_signal_connect (view, "motion-notify-event",
-			G_CALLBACK (on_view_motion_notify), self);
-		self->priv->view_handlers[VIEW_HANDLER_BUTTON_PRESS]
-			= g_signal_connect (view, "button-press-event",
-			G_CALLBACK (on_view_button_press), self);
-		self->priv->view_handlers[VIEW_HANDLER_BUTTON_RELEASE]
-			= g_signal_connect (view, "button-release-event",
-			G_CALLBACK (on_view_button_release), self);
-
-		block_view_handlers (self);
-		g_object_ref (view);
-	}
-	g_object_notify (G_OBJECT (self), "view");
-}
-
-/**
- * ld_library_toolbar_get_view:
- * @self: an #LdLibraryToolbar object.
- *
- * Return value: (transfer none): the #LdDiagramView widget
- *               assigned to the toolbar.
- */
-LdDiagramView *
-ld_library_toolbar_get_view (LdLibraryToolbar *self)
-{
-	g_return_val_if_fail (LD_IS_LIBRARY_TOOLBAR (self), NULL);
-	return self->priv->view;
-}
-
-static void
-reload_library (LdLibraryToolbar *self)
-{
-	g_return_if_fail (LD_IS_LIBRARY_TOOLBAR (self));
-
-	/* Clear the toolbar first, if there was already something in it. */
-	gtk_container_foreach (GTK_CONTAINER (self),
-		(GtkCallback) gtk_widget_destroy, NULL);
-
-	if (self->priv->library)
-	{
-		GSList *categories;
-
-		categories = (GSList *) ld_library_get_categories (self->priv->library);
-		g_slist_foreach (categories, load_category_cb, self);
-	}
-}
-
-static void
-load_category_cb (gpointer data, gpointer user_data)
-{
-	LdLibraryToolbar *self;
-	LdSymbolCategory *cat;
-	const gchar *human_name;
-	GdkPixbuf *pbuf, *new_pbuf;
-	GtkWidget *img;
-	GtkToolItem *item;
-	GtkWidget *button;
-	GtkStyle *style;
-
-	g_return_if_fail (LD_IS_LIBRARY_TOOLBAR (user_data));
-	g_return_if_fail (LD_IS_SYMBOL_CATEGORY (data));
-
-	self = user_data;
-	cat = data;
-
-	pbuf = gdk_pixbuf_new_from_file_at_size	(ld_symbol_category_get_image_path
-		(cat), LIBRARY_TOOLBAR_ICON_WIDTH, -1, NULL);
-	g_return_if_fail (pbuf != NULL);
-
-	button = gtk_toggle_button_new ();
-	style = gtk_rc_get_style (button);
-
-	/* TODO: Handle all states. */
-	new_pbuf = recolor_pixbuf (pbuf, &style->fg[GTK_STATE_NORMAL]);
-	if (new_pbuf)
-	{
-		g_object_unref (pbuf);
-		pbuf = new_pbuf;
-	}
-
-	img = gtk_image_new_from_pixbuf (pbuf);
-	g_object_unref (pbuf);
-
-	item = gtk_tool_item_new ();
-	gtk_container_add (GTK_CONTAINER (button), img);
-	gtk_container_add (GTK_CONTAINER (item), button);
-
-	/* Don't steal focus from the view. */
-	g_object_set (button, "can-focus", FALSE, NULL);
-
-	/* Assign the category to the toggle button. */
-	/* TODO: Move this to the data parameter for the signal handler.
-	 *       Use g_signal_connect_data() to set up destroy notification.
-	 */
-	g_object_ref (cat);
-	g_object_set_data_full (G_OBJECT (button),
-		"category", cat, (GDestroyNotify) g_object_unref);
-
-	/* Hook toggling of the button. */
-	g_signal_connect (button, "toggled", G_CALLBACK (on_category_toggle), self);
-
-	human_name = ld_symbol_category_get_human_name (cat);
-	gtk_tool_item_set_tooltip_text (item, human_name);
-	gtk_toolbar_insert (GTK_TOOLBAR (self), item, 0);
-}
-
-static GdkPixbuf *
-recolor_pixbuf (GdkPixbuf *pbuf, GdkColor *color)
-{
-	gint width, height;
-	GdkPixbuf *new_pbuf;
-	cairo_surface_t *cr_surface;
-	cairo_t *cr;
-
-	width  = gdk_pixbuf_get_width  (pbuf);
-	height = gdk_pixbuf_get_height (pbuf);
-
-	new_pbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, width, height);
-	g_return_val_if_fail (new_pbuf != NULL, NULL);
-
-	cr_surface = cairo_image_surface_create_for_data
-		(gdk_pixbuf_get_pixels (new_pbuf), CAIRO_FORMAT_ARGB32,
-		width, height, gdk_pixbuf_get_rowstride (new_pbuf));
-	cr = cairo_create (cr_surface);
-
-	/* Change the color of all pixels but leave the alpha channel intact. */
-	gdk_cairo_set_source_color (cr, color);
-	cairo_paint (cr);
-
-	cairo_set_operator (cr, CAIRO_OPERATOR_DEST_IN);
-	gdk_cairo_set_source_pixbuf (cr, pbuf, 0, 0);
-	cairo_paint (cr);
-
-	cairo_destroy (cr);
-	cairo_surface_destroy (cr_surface);
-	return new_pbuf;
-}
-
-static void
-redraw_symbol_menu (LdLibraryToolbar *self)
-{
-	SymbolMenuData *data;
-
-	g_return_if_fail (LD_IS_LIBRARY_TOOLBAR (self));
-	data = &self->priv->symbol_menu;
-
-	gtk_widget_queue_draw_area (GTK_WIDGET (self->priv->view),
-		0, data->menu_y - 1, data->menu_width + 2, data->menu_height + 2);
-}
-
-static void
-emit_symbol_signal (LdLibraryToolbar *self, guint signal_id, gint menu_index)
-{
-	SymbolMenuData *data;
-	SymbolMenuItem *item;
-
-	data = &self->priv->symbol_menu;
-	if (menu_index == -1)
-		menu_index = data->active_item;
-	if (menu_index != -1)
-	{
-		item = &data->items[menu_index];
-		g_signal_emit (self, signal_id, 0, item->symbol, item->klass);
-	}
-}
-
-static void
-on_category_toggle (GtkToggleButton *toggle_button, gpointer user_data)
-{
-	LdLibraryToolbar *self;
-	LdLibraryToolbarPrivate *priv;
-	LdSymbolCategory *cat;
-	SymbolMenuData *data;
-	const gchar *category_name, *symbol_name;
-
-	cat = g_object_get_data (G_OBJECT (toggle_button), "category");
-	self = LD_LIBRARY_TOOLBAR (user_data);
-	priv = self->priv;
-	data = &priv->symbol_menu;
-
-	/* First untoggle any active button. */
-	if (data->active_button)
-		gtk_toggle_button_set_active (data->active_button, FALSE);
-
-	/* And toggle signal handlers that enable the user to add a symbol. */
-	if (data->active_button == toggle_button)
-	{
-		gint i;
-
-		block_view_handlers (self);
-
-		g_object_unref (data->active_button);
-		data->active_button = NULL;
-
-		emit_symbol_signal (self, LD_LIBRARY_TOOLBAR_GET_CLASS (self)
-			->symbol_deselected_signal, -1);
-
-		/* Ashes to ashes, NULL to NULL. */
-		for (i = 0; i < data->n_items; i++)
-		{
-			g_object_unref (data->items[i].symbol);
-			g_free (data->items[i].klass);
-		}
-
-		g_free (data->items);
-		data->items = NULL;
-
-		gtk_grab_remove (GTK_WIDGET (self->priv->view));
-	}
-	else
-	{
-		const GSList *symbols, *symbol_iter;
-		SymbolMenuItem *item;
-		gint x, y, menu_width;
-
-		g_return_if_fail (gtk_widget_translate_coordinates (GTK_WIDGET
-			(toggle_button), GTK_WIDGET (priv->view), 0, 0, &x, &y));
-
-		data->menu_y = y;
-		data->menu_height = GTK_WIDGET (toggle_button)->allocation.height;
-
-		unblock_view_handlers (self);
-
-		data->active_button = toggle_button;
-		g_object_ref (data->active_button);
-
-		category_name = ld_symbol_category_get_name (cat);
-		symbols = ld_symbol_category_get_symbols (cat);
-
-		data->n_items = g_slist_length ((GSList *) symbols);
-		data->items = g_new (SymbolMenuItem, data->n_items);
-		data->active_item = -1;
-
-		item = data->items;
-		menu_width = 0;
-		for (symbol_iter = symbols; symbol_iter;
-			symbol_iter = symbol_iter->next)
-		{
-			LdRectangle area;
-
-			item->symbol = LD_SYMBOL (symbol_iter->data);
-			g_object_ref (item->symbol);
-
-			symbol_name = ld_symbol_get_name (item->symbol);
-			item->klass = g_build_path (LD_LIBRARY_IDENTIFIER_SEPARATOR,
-				category_name, symbol_name, NULL);
-
-			ld_symbol_get_area (item->symbol, &area);
-
-			/* This is the height when the center of the symbol is
-			 * in the center of it's symbol menu item.
-			 */
-			item->scale = data->menu_height * 0.5
-				/ MAX (ABS (area.y), ABS (area.y + area.height)) * 0.5;
-			if (item->scale * area.width > 1.5 * data->menu_height)
-				item->scale = 1.5 * data->menu_height / area.width;
-			item->width = data->menu_height * 0.5 + item->scale * area.width;
-			item->dx = item->width * 0.5 + item->scale
-				* (area.width * 0.5 - ABS (area.x + area.width));
-
-			menu_width += item++->width;
-		}
-		data->menu_width = menu_width;
-
-		gtk_grab_add (GTK_WIDGET (self->priv->view));
-	}
-	redraw_symbol_menu (self);
-}
-
-#define DEFINE_VIEW_HANDLER_FUNC(name) \
-static inline void \
-name ## _view_handlers (LdLibraryToolbar *self) \
-{ \
-	gint i; \
-	g_return_if_fail (LD_IS_DIAGRAM_VIEW (self->priv->view)); \
-	for (i = 0; i < VIEW_HANDLER_COUNT; i++) \
-		g_signal_handler_ ## name (self->priv->view, \
-			self->priv->view_handlers[i]); \
-}
-
-DEFINE_VIEW_HANDLER_FUNC (block)
-DEFINE_VIEW_HANDLER_FUNC (unblock)
-DEFINE_VIEW_HANDLER_FUNC (disconnect)
-
-static gboolean
-on_view_exposed (GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
-{
-	cairo_t *cr;
-	LdLibraryToolbar *self;
-	SymbolMenuData *data;
-	gint i, x;
-
-	cr = gdk_cairo_create (widget->window);
-	self = LD_LIBRARY_TOOLBAR (user_data);
-	data = &self->priv->symbol_menu;
-
-	/* Draw some border. */
-	cairo_set_line_width (cr, 1);
-
-	cairo_rectangle (cr, 0, data->menu_y, data->menu_width, data->menu_height);
-	cairo_set_source_rgb (cr, 1, 1, 1);
-	cairo_fill (cr);
-
-	/* Draw all symbols from that category. */
-	for (x = i = 0; i < data->n_items; i++)
-	{
-		SymbolMenuItem *item;
-
-		if (i)
-		{
-			cairo_move_to (cr, x - 0.5, data->menu_y + 1);
-			cairo_line_to (cr, x - 0.5, data->menu_y + data->menu_height);
-			cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
-			cairo_stroke (cr);
-		}
-
-		item = data->items + i;
-		cairo_save (cr);
-
-		cairo_rectangle (cr, x, data->menu_y, item->width, data->menu_height);
-		cairo_clip (cr);
-
-		if (i == data->active_item)
-		{
-			cairo_set_source_rgb (cr, 0.9, 0.9, 0.9);
-			cairo_paint (cr);
-		}
-
-		cairo_translate (cr, x + item->dx,
-			data->menu_y + data->menu_height * 0.5);
-		cairo_scale (cr, item->scale, item->scale);
-
-		cairo_set_source_rgb (cr, 0, 0, 0);
-		cairo_set_line_width (cr, 1 / item->scale);
-		ld_symbol_draw (item->symbol, cr);
-
-		cairo_restore (cr);
-		x += item->width;
-	}
-
-	cairo_rectangle (cr, 0.5, data->menu_y + 0.5,
-		data->menu_width, data->menu_height);
-	cairo_set_source_rgb (cr, 0, 0, 0);
-	cairo_stroke (cr);
-
-	cairo_destroy (cr);
-	return FALSE;
-}
-
-static gboolean
-on_view_motion_notify (GtkWidget *widget, GdkEventMotion *event,
-	gpointer user_data)
-{
-	LdLibraryToolbar *self;
-	SymbolMenuData *data;
-	gint i, x, at_cursor = -1;
-
-	self = LD_LIBRARY_TOOLBAR (user_data);
-	data = &self->priv->symbol_menu;
-
-	if (widget->window != event->window
-		|| event->x < 0 || event->y < data->menu_y
-		|| event->y >= data->menu_y + data->menu_height)
-		goto on_view_motion_notify_end;
-
-	for (x = i = 0; i < data->n_items; i++)
-	{
-		x += data->items[i].width;
-		if (event->x < x)
-		{
-			at_cursor = i;
-			break;
-		}
-	}
-
-on_view_motion_notify_end:
-	if (data->active_item != at_cursor)
-	{
-		emit_symbol_signal (self, LD_LIBRARY_TOOLBAR_GET_CLASS (self)
-			->symbol_deselected_signal, -1);
-
-		if (at_cursor != -1)
-			emit_symbol_signal (self, LD_LIBRARY_TOOLBAR_GET_CLASS (self)
-				->symbol_selected_signal, at_cursor);
-	}
-	data->active_item = at_cursor;
-	redraw_symbol_menu (self);
-	return FALSE;
-}
-
-static gboolean
-on_view_button_press (GtkWidget *widget, GdkEventButton *event,
-	gpointer user_data)
-{
-	LdLibraryToolbar *self;
-	SymbolMenuData *data;
-
-	self = LD_LIBRARY_TOOLBAR (user_data);
-	data = &self->priv->symbol_menu;
-
-	/* If the event occured elsewhere, cancel the menu and put the event
-	 * back into the queue.
-	 */
-	if (widget->window != event->window && data->active_button)
-	{
-		gtk_toggle_button_set_active (data->active_button, FALSE);
-		gdk_event_put ((GdkEvent *) event);
-	}
-	return FALSE;
-}
-
-static gboolean
-on_view_button_release (GtkWidget *widget, GdkEventButton *event,
-	gpointer user_data)
-{
-	LdLibraryToolbar *self;
-	SymbolMenuData *data;
-
-	self = LD_LIBRARY_TOOLBAR (user_data);
-	data = &self->priv->symbol_menu;
-
-	if (event->button != 1)
-		return FALSE;
-
-	emit_symbol_signal (self, LD_LIBRARY_TOOLBAR_GET_CLASS (self)
-		->symbol_chosen_signal, -1);
-
-	/* We've either chosen a symbol or canceled the menu, so hide it. */
-	if (data->active_button)
-		gtk_toggle_button_set_active (data->active_button, FALSE);
-
-	return FALSE;
-}
diff --git a/liblogdiag/ld-library-toolbar.h b/liblogdiag/ld-library-toolbar.h
deleted file mode 100644
index b1dc77a..0000000
--- a/liblogdiag/ld-library-toolbar.h
+++ /dev/null
@@ -1,69 +0,0 @@
-/*
- * ld-library-toolbar.h
- *
- * This file is a part of logdiag.
- * Copyright Přemysl Janouch 2011. All rights reserved.
- *
- * See the file LICENSE for licensing information.
- *
- */
-
-#ifndef __LD_LIBRARY_TOOLBAR_H__
-#define __LD_LIBRARY_TOOLBAR_H__
-
-G_BEGIN_DECLS
-
-
-#define LD_TYPE_LIBRARY_TOOLBAR (ld_library_toolbar_get_type ())
-#define LD_LIBRARY_TOOLBAR(obj) (G_TYPE_CHECK_INSTANCE_CAST \
-	((obj), LD_TYPE_LIBRARY_TOOLBAR, LdLibraryToolbar))
-#define LD_LIBRARY_TOOLBAR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST \
-	((klass), LD_TYPE_LIBRARY_TOOLBAR, LdLibraryToolbarClass))
-#define LD_IS_LIBRARY_TOOLBAR(obj) (G_TYPE_CHECK_INSTANCE_TYPE \
-	((obj), LD_TYPE_LIBRARY_TOOLBAR))
-#define LD_IS_LIBRARY_TOOLBAR_CLASS(klass) (G_TYPE_CHECK_INSTANCE_TYPE \
-	((klass), LD_TYPE_LIBRARY_TOOLBAR))
-#define LD_LIBRARY_TOOLBAR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS \
-	((obj), LD_LIBRARY_TOOLBAR, LdLibraryToolbarClass))
-
-typedef struct _LdLibraryToolbar LdLibraryToolbar;
-typedef struct _LdLibraryToolbarPrivate LdLibraryToolbarPrivate;
-typedef struct _LdLibraryToolbarClass LdLibraryToolbarClass;
-
-
-/**
- * LdLibraryToolbar:
- */
-struct _LdLibraryToolbar
-{
-/*< private >*/
-	GtkToolbar parent_instance;
-	LdLibraryToolbarPrivate *priv;
-};
-
-struct _LdLibraryToolbarClass
-{
-/*< private >*/
-	GtkToolbarClass parent_class;
-
-	guint symbol_chosen_signal;
-	guint symbol_selected_signal;
-	guint symbol_deselected_signal;
-};
-
-
-GType ld_library_toolbar_get_type (void) G_GNUC_CONST;
-
-GtkWidget *ld_library_toolbar_new (void);
-
-void ld_library_toolbar_set_library (LdLibraryToolbar *self,
-	LdLibrary *library);
-LdLibrary *ld_library_toolbar_get_library (LdLibraryToolbar *self);
-void ld_library_toolbar_set_view (LdLibraryToolbar *self,
-	LdDiagramView *view);
-LdDiagramView *ld_library_toolbar_get_view (LdLibraryToolbar *self);
-
-
-G_END_DECLS
-
-#endif /* ! __LD_LIBRARY_TOOLBAR_H__ */
diff --git a/liblogdiag/liblogdiag.h b/liblogdiag/liblogdiag.h
index c60d5da..d5773ae 100644
--- a/liblogdiag/liblogdiag.h
+++ b/liblogdiag/liblogdiag.h
@@ -28,7 +28,6 @@
 #include "ld-diagram.h"
 
 #include "ld-diagram-view.h"
-#include "ld-library-toolbar.h"
 #include "ld-library-pane.h"
 
 #include "ld-lua.h"
diff --git a/share/gui/window-main.ui b/share/gui/window-main.ui
index 62c8436..8974cdc 100644
--- a/share/gui/window-main.ui
+++ b/share/gui/window-main.ui
@@ -27,7 +27,7 @@
 		</menu>
 		<menu name="ViewMenu" action="ViewMenu">
 			<menuitem action="MainToolbar" />
-			<menuitem action="LibraryToolbar" />
+			<menuitem action="LibraryPane" />
 			<separator />
 			<menuitem action="ShowGrid" />
 			<separator />
diff --git a/share/org.logdiag.gschema.xml b/share/org.logdiag.gschema.xml
index 515e0b8..aed6cb1 100644
--- a/share/org.logdiag.gschema.xml
+++ b/share/org.logdiag.gschema.xml
@@ -4,9 +4,9 @@
 			<default>true</default>
 			<summary>Whether to show the main toolbar</summary>
 		</key>
-		<key name="show-library-toolbar" type="b">
+		<key name="show-library-pane" type="b">
 			<default>true</default>
-			<summary>Whether to show the library toolbar</summary>
+			<summary>Whether to show the library pane</summary>
 		</key>
 		<key name="show-grid" type="b">
 			<default>true</default>
diff --git a/src/ld-window-main.c b/src/ld-window-main.c
index 2f2559e..2b76ad7 100644
--- a/src/ld-window-main.c
+++ b/src/ld-window-main.c
@@ -23,11 +23,13 @@ struct _LdWindowMainPrivate
 	GtkActionGroup *action_group;
 
 	GtkWidget *vbox;
-	GtkWidget *hbox;
+	GtkWidget *paned;
 	GtkWidget *menu;
 	GtkWidget *toolbar;
-	GtkWidget *library_toolbar;
+
 	GtkWidget *library_pane;
+	GtkWidget *pane_window;
+	GtkWidget *pane_viewport;
 
 	LdLibrary *library;
 
@@ -85,13 +87,6 @@ static gboolean may_close_diagram (LdWindowMain *self,
 	const gchar *dialog_message);
 static gboolean may_quit (LdWindowMain *self);
 
-static void on_symbol_selected (LdLibraryToolbar *toolbar, LdSymbol *symbol,
-	const gchar *klass, LdWindowMain *self);
-static void on_symbol_deselected (LdLibraryToolbar *toolbar, LdSymbol *symbol,
-	const gchar *klass, LdWindowMain *self);
-static void on_symbol_chosen (LdLibraryToolbar *toolbar, LdSymbol *symbol,
-	const gchar *klass, LdWindowMain *self);
-
 static void on_action_new (GtkAction *action, LdWindowMain *self);
 static void on_action_open (GtkAction *action, LdWindowMain *self);
 static void on_action_save (GtkAction *action, LdWindowMain *self);
@@ -106,7 +101,7 @@ static void on_action_select_all (GtkAction *action, LdWindowMain *self);
 
 static void on_action_main_toolbar (GtkToggleAction *action,
 	LdWindowMain *self);
-static void on_action_library_toolbar (GtkToggleAction *action,
+static void on_action_library_pane (GtkToggleAction *action,
 	LdWindowMain *self);
 static void on_action_grid (GtkToggleAction *action, LdWindowMain *self);
 
@@ -183,9 +178,9 @@ static GtkToggleActionEntry wm_toggle_action_entries[] =
 	{"MainToolbar", NULL, N_("_Main Toolbar"), NULL,
 		N_("Toggle displaying of the main toolbar"),
 		G_CALLBACK (on_action_main_toolbar), TRUE},
-	{"LibraryToolbar", NULL, N_("_Library Toolbar"), NULL,
-		N_("Toggle displaying of the library toolbar"),
-		G_CALLBACK (on_action_library_toolbar), TRUE},
+	{"LibraryPane", NULL, N_("_Library Pane"), NULL,
+		N_("Toggle displaying of the library pane"),
+		G_CALLBACK (on_action_library_pane), TRUE},
 	{"ShowGrid", NULL, N_("Show _Grid"), NULL,
 		N_("Toggle displaying of the grid"),
 		G_CALLBACK (on_action_grid), TRUE}
@@ -267,11 +262,6 @@ ld_window_main_init (LdWindowMain *self)
 	priv->toolbar = gtk_ui_manager_get_widget (priv->ui_manager, "/Toolbar");
 
 	/* Create the remaining widgets. */
-	priv->library_toolbar = ld_library_toolbar_new ();
-	/* XXX: For GTK 2.16+, s/toolbar/orientable/ */
-	gtk_toolbar_set_orientation (GTK_TOOLBAR (priv->library_toolbar),
-		GTK_ORIENTATION_VERTICAL);
-
 	priv->library_pane = ld_library_pane_new ();
 
 	priv->view = LD_DIAGRAM_VIEW (ld_diagram_view_new ());
@@ -287,19 +277,27 @@ ld_window_main_init (LdWindowMain *self)
 	priv->statusbar_symbol_context_id = gtk_statusbar_get_context_id
 		(GTK_STATUSBAR (priv->statusbar), "symbol");
 
-	/* Pack all widgets into the window. */
-	priv->hbox = gtk_hbox_new (FALSE, 0);
-	gtk_box_pack_start (GTK_BOX (priv->hbox), priv->library_toolbar,
-		FALSE, FALSE, 0);
-	gtk_box_pack_start (GTK_BOX (priv->hbox), priv->scrolled_window,
-		TRUE, TRUE, 0);
-	gtk_box_pack_start (GTK_BOX (priv->hbox), priv->library_pane,
-		TRUE, TRUE, 0);
+	priv->pane_viewport = gtk_viewport_new (NULL, NULL);
+	gtk_viewport_set_shadow_type
+		(GTK_VIEWPORT (priv->pane_viewport), GTK_SHADOW_NONE);
+	gtk_container_add (GTK_CONTAINER (priv->pane_viewport), priv->library_pane);
 
+	priv->pane_window = gtk_scrolled_window_new (NULL, NULL);
+	gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->pane_window),
+		GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
+	gtk_container_add (GTK_CONTAINER (priv->pane_window), priv->pane_viewport);
+
+	priv->paned = gtk_hpaned_new ();
+	gtk_paned_pack1 (GTK_PANED (priv->paned),
+		priv->pane_window, FALSE, FALSE);
+	gtk_paned_pack2 (GTK_PANED (priv->paned),
+		priv->scrolled_window, TRUE, TRUE);
+
+	/* Pack all widgets into the window. */
 	priv->vbox = gtk_vbox_new (FALSE, 0);
 	gtk_box_pack_start (GTK_BOX (priv->vbox), priv->menu, FALSE, FALSE, 0);
 	gtk_box_pack_start (GTK_BOX (priv->vbox), priv->toolbar, FALSE, FALSE, 0);
-	gtk_box_pack_start (GTK_BOX (priv->vbox), priv->hbox, TRUE, TRUE, 0);
+	gtk_box_pack_start (GTK_BOX (priv->vbox), priv->paned, TRUE, TRUE, 0);
 	gtk_box_pack_end (GTK_BOX (priv->vbox), priv->statusbar, FALSE, FALSE, 0);
 
 	gtk_container_add (GTK_CONTAINER (self), priv->vbox);
@@ -334,21 +332,9 @@ ld_window_main_init (LdWindowMain *self)
 	g_signal_connect (priv->view, "notify::zoom",
 		G_CALLBACK (on_view_zoom_changed), self);
 
-	ld_library_toolbar_set_library (LD_LIBRARY_TOOLBAR (priv->library_toolbar),
-		priv->library);
-	ld_library_toolbar_set_view (LD_LIBRARY_TOOLBAR (priv->library_toolbar),
-		priv->view);
-
 	ld_library_pane_set_library (LD_LIBRARY_PANE (priv->library_pane),
 		priv->library);
 
-	g_signal_connect_after (priv->library_toolbar, "symbol-selected",
-		G_CALLBACK (on_symbol_selected), self);
-	g_signal_connect_after (priv->library_toolbar, "symbol-deselected",
-		G_CALLBACK (on_symbol_deselected), self);
-	g_signal_connect_after (priv->library_toolbar, "symbol-chosen",
-		G_CALLBACK (on_symbol_chosen), self);
-
 	diagram_set_filename (self, NULL);
 
 	action_set_sensitive (self, "Undo", FALSE);
@@ -367,9 +353,9 @@ ld_window_main_init (LdWindowMain *self)
 	g_settings_bind (priv->settings, "show-main-toolbar",
 		gtk_action_group_get_action (priv->action_group,
 			"MainToolbar"), "active", G_SETTINGS_BIND_DEFAULT);
-	g_settings_bind (priv->settings, "show-library-toolbar",
+	g_settings_bind (priv->settings, "show-library-pane",
 		gtk_action_group_get_action (priv->action_group,
-			"LibraryToolbar"), "active", G_SETTINGS_BIND_DEFAULT);
+			"LibraryPane"), "active", G_SETTINGS_BIND_DEFAULT);
 	g_settings_bind (priv->settings, "show-grid",
 		gtk_action_group_get_action (priv->action_group,
 			"ShowGrid"), "active", G_SETTINGS_BIND_DEFAULT);
@@ -838,38 +824,6 @@ may_quit (LdWindowMain *self)
 /* ===== User interface actions ============================================ */
 
 static void
-on_symbol_selected (LdLibraryToolbar *toolbar, LdSymbol *symbol,
-	const gchar *klass, LdWindowMain *self)
-{
-	const gchar *symbol_name;
-
-	symbol_name = ld_symbol_get_human_name (symbol);
-	gtk_statusbar_push (GTK_STATUSBAR (self->priv->statusbar),
-		self->priv->statusbar_menu_context_id, symbol_name);
-}
-
-static void
-on_symbol_deselected (LdLibraryToolbar *toolbar, LdSymbol *symbol,
-	const gchar *klass, LdWindowMain *self)
-{
-	gtk_statusbar_pop (GTK_STATUSBAR (self->priv->statusbar),
-		self->priv->statusbar_menu_context_id);
-}
-
-static void
-on_symbol_chosen (LdLibraryToolbar *toolbar, LdSymbol *symbol,
-	const gchar *klass, LdWindowMain *self)
-{
-	LdDiagramSymbol *diagram_symbol;
-
-	diagram_symbol = ld_diagram_symbol_new (NULL);
-	ld_diagram_symbol_set_class (diagram_symbol, klass);
-
-	ld_diagram_view_add_object_begin (self->priv->view,
-		LD_DIAGRAM_OBJECT (diagram_symbol));
-}
-
-static void
 on_view_zoom_changed (LdDiagramView *view, GParamSpec *pspec,
 	LdWindowMain *self)
 {
@@ -958,9 +912,9 @@ on_action_main_toolbar (GtkToggleAction *action, LdWindowMain *self)
 }
 
 static void
-on_action_library_toolbar (GtkToggleAction *action, LdWindowMain *self)
+on_action_library_pane (GtkToggleAction *action, LdWindowMain *self)
 {
-	gtk_widget_set_visible (self->priv->library_toolbar,
+	gtk_widget_set_visible (self->priv->pane_window,
 		gtk_toggle_action_get_active (action));
 }