/* * ld-window-main.c * * This file is a part of logdiag. * Copyright Přemysl Janouch 2010. All rights reserved. * * See the file LICENSE for licensing information. * */ #include #include "config.h" #include "ld-window-main.h" #include "ld-symbol.h" #include "ld-symbol-category.h" #include "ld-library.h" #include "ld-document-object.h" #include "ld-document-symbol.h" #include "ld-document.h" #include "ld-canvas.h" /** * SECTION:ld-window-main * @short_description: The main application window. * * #LdWindowMain is the main window of the application. */ /* NOTE: The main window should not maybe be included in either * the documentation or the static library. */ typedef struct _SymbolMenuItem SymbolMenuItem; typedef struct _SymbolMenuData SymbolMenuData; typedef struct _DocumentData DocumentData; /* * SymbolMenuItem: * * Data related to a symbol in an open symbol menu. */ struct _SymbolMenuItem { LdSymbol *symbol; gint width; gdouble scale; }; /* * SymbolMenuData: * * Data related to the currently opened symbol menu. */ struct _SymbolMenuData { gulong expose_handler; gulong motion_notify_handler; gulong button_release_handler; GtkToggleButton *active_button; SymbolMenuItem *items; gint n_items; gint active_item; gint menu_width; gint menu_height; gint menu_y; }; /* * DocumentData: * * Data related to the current document. */ struct _DocumentData { LdDocument *document; const gchar *file_name; /* Canvas viewport settings (for multitabbed) */ }; struct _LdWindowMainPrivate { GtkUIManager *ui_manager; GtkWidget *vbox; GtkWidget *hbox; GtkWidget *menu; GtkWidget *toolbar; LdLibrary *library; LdCanvas *canvas; GtkWidget *statusbar; guint statusbar_menu_context_id; SymbolMenuData symbol_menu; }; /* Define the type. */ G_DEFINE_TYPE (LdWindowMain, ld_window_main, GTK_TYPE_WINDOW); #define TOOLBAR_ICON_WIDTH 32 /* ===== Local functions =================================================== */ static void ld_window_main_finalize (GObject *gobject); static void load_toolbar (LdWindowMain *self); static void load_category_cb (gpointer data, gpointer user_data); static void redraw_symbol_menu (LdWindowMain *self); static void on_category_toggle (GtkToggleButton *toggle_button, gpointer user_data); static gboolean on_canvas_exposed (GtkWidget *widget, GdkEventExpose *event, gpointer user_data); static gboolean on_canvas_motion_notify (GtkWidget *widget, GdkEventMotion *event, gpointer user_data); static gboolean on_canvas_button_release (GtkWidget *widget, GdkEventButton *event, gpointer user_data); static void on_ui_proxy_connected (GtkUIManager *ui, GtkAction *action, GtkWidget *proxy, LdWindowMain *window); static void on_ui_proxy_disconnected (GtkUIManager *ui, GtkAction *action, GtkWidget *proxy, LdWindowMain *window); static void on_menu_item_selected (GtkWidget *item, LdWindowMain *window); static void on_menu_item_deselected (GtkItem *item, LdWindowMain *window); static void show_about_dialog (GtkAction *action, LdWindowMain *window); /* ===== Local variables =================================================== */ /* Actions for menus, toolbars, accelerators. */ static GtkActionEntry mw_actionEntries[] = { {"FileMenu", NULL, Q_("_File")}, {"New", GTK_STOCK_NEW, NULL, NULL, Q_("Create a new document"), NULL}, {"Open", GTK_STOCK_OPEN, NULL, NULL, Q_("Open a document"), NULL}, {"Save", GTK_STOCK_SAVE, NULL, NULL, Q_("Save the current document"), NULL}, {"SaveAs", GTK_STOCK_SAVE_AS, NULL, NULL, Q_("Save the current document with another name"), NULL}, {"Export", NULL, Q_("_Export"), NULL, Q_("Export the document"), NULL}, {"Quit", GTK_STOCK_QUIT, NULL, NULL, Q_("Quit the application"), G_CALLBACK (gtk_main_quit)}, {"EditMenu", NULL, Q_("_Edit")}, /* These are not probably going to show up in the 1st version of this app: {"Cut", GTK_STOCK_CUT, NULL, NULL, NULL, NULL}, {"Copy", GTK_STOCK_COPY, NULL, NULL, NULL, NULL}, {"Paste", GTK_STOCK_PASTE, NULL, NULL, NULL, NULL}, */ {"Delete", GTK_STOCK_DELETE, NULL, NULL, Q_("Delete the contents of the selection"), NULL}, {"SelectAll", GTK_STOCK_SELECT_ALL, NULL, NULL, Q_("Select all objects in the document"), NULL}, {"HelpMenu", NULL, Q_("_Help")}, {"About", GTK_STOCK_ABOUT, NULL, NULL, Q_("Show a dialog about this application"), G_CALLBACK (show_about_dialog)} }; /** * ld_window_main_new: * * Create an instance. */ GtkWidget * ld_window_main_new (void) { return g_object_new (LD_TYPE_WINDOW_MAIN, NULL); } static void ld_window_main_class_init (LdWindowMainClass *klass) { GObjectClass *object_class; GtkWidgetClass *widget_class; object_class = G_OBJECT_CLASS (klass); object_class->finalize = ld_window_main_finalize; widget_class = GTK_WIDGET_CLASS (klass); g_type_class_add_private (klass, sizeof (LdWindowMainPrivate)); } static void ld_window_main_init (LdWindowMain *self) { LdWindowMainPrivate *priv; GtkActionGroup *action_group; GError *error; self->priv = priv = G_TYPE_INSTANCE_GET_PRIVATE (self, LD_TYPE_WINDOW_MAIN, LdWindowMainPrivate); priv->vbox = gtk_vbox_new (FALSE, 0); gtk_container_add (GTK_CONTAINER (self), priv->vbox); priv->ui_manager = gtk_ui_manager_new (); g_signal_connect (priv->ui_manager, "connect-proxy", G_CALLBACK (on_ui_proxy_connected), self); g_signal_connect (priv->ui_manager, "disconnect-proxy", G_CALLBACK (on_ui_proxy_disconnected), self); /* Prepare our actions. */ action_group = gtk_action_group_new ("MainActions"); gtk_action_group_add_actions (action_group, mw_actionEntries, G_N_ELEMENTS (mw_actionEntries), self); gtk_ui_manager_insert_action_group (priv->ui_manager, action_group, 0); error = NULL; gtk_ui_manager_add_ui_from_file (priv->ui_manager, PROJECT_SHARE_DIR "gui/window-main.ui", &error); if (error) { g_message (_("Building UI failed: %s"), error->message); g_error_free (error); } /* Load keyboard accelerators into the window. */ gtk_window_add_accel_group (GTK_WINDOW (self), gtk_ui_manager_get_accel_group (priv->ui_manager)); priv->menu = gtk_ui_manager_get_widget (priv->ui_manager, "/MenuBar"); gtk_box_pack_start (GTK_BOX (priv->vbox), priv->menu, FALSE, FALSE, 0); priv->hbox = gtk_hbox_new(FALSE, 0); gtk_box_pack_start (GTK_BOX (priv->vbox), priv->hbox, TRUE, TRUE, 0); /* Add the symbol toolbar. */ priv->toolbar = gtk_toolbar_new (); /* NOTE: For GTK 2.16+, s/toolbar/orientable/ */ gtk_toolbar_set_orientation (GTK_TOOLBAR (priv->toolbar), GTK_ORIENTATION_VERTICAL); gtk_toolbar_set_icon_size (GTK_TOOLBAR (priv->toolbar), GTK_ICON_SIZE_LARGE_TOOLBAR); gtk_toolbar_set_style (GTK_TOOLBAR (priv->toolbar), GTK_TOOLBAR_ICONS); gtk_box_pack_start (GTK_BOX (priv->hbox), priv->toolbar, FALSE, FALSE, 0); /* Symbol library. */ priv->library = ld_library_new (); ld_library_load (priv->library, PROJECT_SHARE_DIR "library"); load_toolbar (self); /* TODO in the future: GtkHPaned */ /* Canvas. */ /* TODO: Put it into a GtkScrolledWindow. */ priv->canvas = ld_canvas_new (); /* TODO: To be able to draw a symbol menu over the canvas, we may: * 1. Hook the expose-event and button-{press,release}-event signals. * 2. Create a hook mechanism in the LdCanvas object. * + The cairo context would not have to be created twice. * - More complex API. */ priv->symbol_menu.expose_handler = g_signal_connect (priv->canvas, "expose-event", G_CALLBACK (on_canvas_exposed), self); priv->symbol_menu.motion_notify_handler = g_signal_connect (priv->canvas, "motion-notify-event", G_CALLBACK (on_canvas_motion_notify), self); priv->symbol_menu.button_release_handler = g_signal_connect (priv->canvas, "button-release-event", G_CALLBACK (on_canvas_button_release), self); gtk_widget_add_events (GTK_WIDGET (priv->canvas), GDK_POINTER_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK | GDK_BUTTON_PRESS_MASK); /* Don't render anything over the canvas yet. */ g_signal_handler_block (priv->canvas, priv->symbol_menu.expose_handler); g_signal_handler_block (priv->canvas, priv->symbol_menu.motion_notify_handler); g_signal_handler_block (priv->canvas, priv->symbol_menu.button_release_handler); gtk_box_pack_start (GTK_BOX (priv->hbox), GTK_WIDGET (priv->canvas), TRUE, TRUE, 0); priv->statusbar = gtk_statusbar_new (); priv->statusbar_menu_context_id = gtk_statusbar_get_context_id (GTK_STATUSBAR (priv->statusbar), "menu"); gtk_box_pack_end (GTK_BOX (priv->vbox), priv->statusbar, FALSE, FALSE, 0); /* Proceed to showing the window. */ g_signal_connect (self, "destroy", G_CALLBACK (gtk_main_quit), NULL); gtk_window_set_default_size (GTK_WINDOW (self), 500, 400); gtk_window_set_position (GTK_WINDOW (self), GTK_WIN_POS_CENTER); gtk_widget_show_all (GTK_WIDGET (self)); } /* * ld_window_main_finalize: * * Dispose of all the resources owned by this window. */ static void ld_window_main_finalize (GObject *gobject) { LdWindowMain *self; self = LD_WINDOW_MAIN (gobject); /* Dispose of objects. Note that GtkObject has floating ref. by default * and gtk_object_destroy () should be used for it. */ g_object_unref (self->priv->library); g_object_unref (self->priv->ui_manager); /* Chain up to the parent class. */ G_OBJECT_CLASS (ld_window_main_parent_class)->finalize (gobject); } /* * load_toolbar: * * Load symbols from the library into the toolbar. */ static void load_toolbar (LdWindowMain *self) { GSList *categories; /* Clear the toolbar first, if there was already something in it. */ gtk_container_foreach (GTK_CONTAINER (self->priv->toolbar), (GtkCallback) gtk_widget_destroy, NULL); categories = (GSList *) ld_library_get_children (self->priv->library); g_slist_foreach (categories, load_category_cb, self); } /* * load_category_cb: * * A foreach callback for adding categories into the toolbar. */ static void load_category_cb (gpointer data, gpointer user_data) { LdWindowMain *self; LdSymbolCategory *cat; const gchar *name; GdkPixbuf *pbuf; GtkWidget *img; GtkToolItem *item; GtkWidget *button; g_return_if_fail (LD_IS_WINDOW_MAIN (user_data)); g_return_if_fail (LD_IS_SYMBOL_CATEGORY (data)); self = user_data; cat = data; name = ld_symbol_category_get_name (cat); pbuf = gdk_pixbuf_new_from_file_at_size (ld_symbol_category_get_image_path (cat), TOOLBAR_ICON_WIDTH, -1, NULL); g_return_if_fail (pbuf != NULL); img = gtk_image_new_from_pixbuf (pbuf); g_object_unref (pbuf); item = gtk_tool_item_new (); button = gtk_toggle_button_new (); gtk_container_add (GTK_CONTAINER (button), img); gtk_container_add (GTK_CONTAINER (item), button); /* Assign the category to the toggle button. */ 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); gtk_tool_item_set_tooltip_text (item, name); gtk_toolbar_insert (GTK_TOOLBAR (self->priv->toolbar), item, 0); } /* * redraw_symbol_menu: * * Make the area for symbol menu redraw itself. */ /* XXX: Ideally it should repaint just what's needed. */ static void redraw_symbol_menu (LdWindowMain *self) { SymbolMenuData *data; g_return_if_fail (LD_IS_WINDOW_MAIN (self)); data = &self->priv->symbol_menu; gtk_widget_queue_draw_area (GTK_WIDGET (self->priv->canvas), 0, data->menu_y - 1, data->menu_width + 2, data->menu_height + 2); } /* * on_category_toggle: * * Show or hide a symbol menu. */ static void on_category_toggle (GtkToggleButton *toggle_button, gpointer user_data) { LdWindowMain *self; LdWindowMainPrivate *priv; LdSymbolCategory *cat; SymbolMenuData *data; g_return_if_fail (LD_IS_WINDOW_MAIN (user_data)); cat = g_object_get_data (G_OBJECT (toggle_button), "category"); self = LD_WINDOW_MAIN (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; g_signal_handler_block (priv->canvas, priv->symbol_menu.expose_handler); g_signal_handler_block (priv->canvas, priv->symbol_menu.motion_notify_handler); g_signal_handler_block (priv->canvas, priv->symbol_menu.button_release_handler); g_object_unref (data->active_button); data->active_button = NULL; /* 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); data->items = NULL; } else { const GSList *children, *symbol_iter; SymbolMenuItem *item; gint x, y, menu_width; g_return_if_fail (gtk_widget_translate_coordinates (GTK_WIDGET (toggle_button), GTK_WIDGET (priv->canvas), 0, 0, &x, &y)); data->menu_y = y; data->menu_height = GTK_WIDGET (toggle_button)->allocation.height; g_signal_handler_unblock (priv->canvas, priv->symbol_menu.expose_handler); g_signal_handler_unblock (priv->canvas, priv->symbol_menu.motion_notify_handler); g_signal_handler_unblock (priv->canvas, priv->symbol_menu.button_release_handler); data->active_button = toggle_button; g_object_ref (data->active_button); children = ld_symbol_category_get_children (cat); data->n_items = g_slist_length ((GSList *) children); data->items = g_new (SymbolMenuItem, data->n_items); data->active_item = -1; item = data->items; menu_width = 0; for (symbol_iter = children; symbol_iter; symbol_iter = symbol_iter->next) { LdSymbolArea area; item->symbol = LD_SYMBOL (symbol_iter->data); g_object_ref (item->symbol); 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)) / 2; /* FIXME: The width is probably wrong (related to the center). */ item->width = item->scale * area.width + data->menu_height * 0.5; menu_width += item++->width; } data->menu_width = menu_width; } redraw_symbol_menu (self); } /* * on_canvas_exposed: * * Draw a symbol menu. */ static gboolean on_canvas_exposed (GtkWidget *widget, GdkEventExpose *event, gpointer user_data) { cairo_t *cr; LdWindowMain *self; SymbolMenuData *data; gint i, x; cr = gdk_cairo_create (widget->window); self = LD_WINDOW_MAIN (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; 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 + (gdouble) item->width / 2, data->menu_y + (gdouble) data->menu_height / 2); 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, data->menu_y, 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_canvas_motion_notify (GtkWidget *widget, GdkEventMotion *event, gpointer user_data) { LdWindowMain *self; SymbolMenuData *data; gint i, x; self = LD_WINDOW_MAIN (user_data); data = &self->priv->symbol_menu; if (event->x < 0 || event->y < data->menu_y || event->y >= data->menu_y + data->menu_height) { data->active_item = -1; redraw_symbol_menu (self); return FALSE; } for (x = i = 0; i < data->n_items; i++) { x += data->items[i].width; if (event->x < x) { data->active_item = i; redraw_symbol_menu (self); return FALSE; } } data->active_item = -1; redraw_symbol_menu (self); return FALSE; } static gboolean on_canvas_button_release (GtkWidget *widget, GdkEventButton *event, gpointer user_data) { LdWindowMain *self; SymbolMenuData *data; self = LD_WINDOW_MAIN (user_data); data = &self->priv->symbol_menu; if (event->button != 1) return FALSE; /* TODO: Add the selected symbol into the document on the position. */ /* 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; } /* * on_ui_proxy_connected: * * An item was connected to the manager. */ static void on_ui_proxy_connected (GtkUIManager *ui, GtkAction *action, GtkWidget *proxy, LdWindowMain *window) { if (GTK_IS_MENU_ITEM (proxy)) { g_signal_connect (proxy, "select", G_CALLBACK (on_menu_item_selected), window); g_signal_connect (proxy, "deselect", G_CALLBACK (on_menu_item_deselected), window); } } /* * on_ui_proxy_disconnected: * * An item was disconnected from the manager. */ static void on_ui_proxy_disconnected (GtkUIManager *ui, GtkAction *action, GtkWidget *proxy, LdWindowMain *window) { if (GTK_IS_MENU_ITEM (proxy)) { g_signal_handlers_disconnect_by_func (proxy, G_CALLBACK (on_menu_item_selected), window); g_signal_handlers_disconnect_by_func (proxy, G_CALLBACK (on_menu_item_deselected), window); } } static void on_menu_item_selected (GtkWidget *item, LdWindowMain *window) { GtkAction *action; gchar *tooltip; action = gtk_activatable_get_related_action (GTK_ACTIVATABLE (item)); g_object_get (G_OBJECT (action), "tooltip", &tooltip, NULL); if (tooltip != NULL) gtk_statusbar_push (GTK_STATUSBAR (window->priv->statusbar), window->priv->statusbar_menu_context_id, tooltip); g_free (tooltip); } static void on_menu_item_deselected (GtkItem *item, LdWindowMain *window) { gtk_statusbar_pop (GTK_STATUSBAR (window->priv->statusbar), window->priv->statusbar_menu_context_id); } static void show_about_dialog (GtkAction *action, LdWindowMain *window) { gtk_show_about_dialog (GTK_WINDOW (window), "program-name", PROJECT_NAME, "version", PROJECT_VERSION, "copyright", "Copyright Přemysl Janouch 2010", NULL); }