Implement diagram operations in UI.
* Now diagrams can be created, loaded and saved. * Define descriptions and accelerators for actions. * Set irrelevant actions unsensitive. * Also remove redundant comments for clarity.
This commit is contained in:
parent
2c3345a4fd
commit
4a946b3241
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@ -35,7 +35,6 @@
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* the documentation or the static library.
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*/
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typedef struct _SymbolMenuItem SymbolMenuItem;
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typedef struct _SymbolMenuData SymbolMenuData;
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@ -77,6 +76,7 @@ struct _SymbolMenuData
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struct _LdWindowMainPrivate
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{
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GtkUIManager *ui_manager;
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GtkActionGroup *action_group;
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GtkWidget *vbox;
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GtkWidget *hbox;
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@ -86,6 +86,9 @@ struct _LdWindowMainPrivate
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LdLibrary *library;
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LdDocument *document;
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gchar *filename;
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GtkWidget *canvas_window;
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LdCanvas *canvas;
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@ -126,6 +129,30 @@ static void on_ui_proxy_disconnected (GtkUIManager *ui, GtkAction *action,
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static void on_menu_item_selected (GtkWidget *item, LdWindowMain *window);
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static void on_menu_item_deselected (GtkItem *item, LdWindowMain *window);
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static gboolean on_delete (LdWindowMain *self, GdkEvent *event,
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gpointer user_data);
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static void update_title (LdWindowMain *self);
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static void action_set_sensitive (LdWindowMain *self, const gchar *name,
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gboolean sensitive);
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static gchar *diagram_get_name (LdWindowMain *self);
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static void diagram_set_filename (LdWindowMain *self, gchar *filename);
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static void diagram_new (LdWindowMain *self);
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static void diagram_save (LdWindowMain *self);
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static GtkFileFilter *diagram_get_file_filter (void);
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static void diagram_show_open_dialog (LdWindowMain *self);
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static void diagram_show_save_as_dialog (LdWindowMain *self);
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static gboolean may_close_diagram (LdWindowMain *self,
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const gchar *dialog_message);
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static gboolean may_quit (LdWindowMain *self);
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static void on_action_new (GtkAction *action, LdWindowMain *self);
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static void on_action_open (GtkAction *action, LdWindowMain *self);
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static void on_action_save (GtkAction *action, LdWindowMain *self);
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static void on_action_save_as (GtkAction *action, LdWindowMain *self);
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static void on_action_quit (GtkAction *action, LdWindowMain *self);
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static void on_action_about (GtkAction *action, LdWindowMain *self);
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@ -134,42 +161,50 @@ static void on_action_about (GtkAction *action, LdWindowMain *self);
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/* Actions for menus, toolbars, accelerators. */
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static GtkActionEntry wm_action_entries[] =
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{
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{"FileMenu", NULL, Q_("_File")},
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{"New", GTK_STOCK_NEW, NULL, NULL,
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Q_("Create a new document"), NULL},
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{"Open", GTK_STOCK_OPEN, NULL, NULL,
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Q_("Open a document"), NULL},
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{"Save", GTK_STOCK_SAVE, NULL, NULL,
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Q_("Save the current document"), NULL},
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{"SaveAs", GTK_STOCK_SAVE_AS, NULL, NULL,
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Q_("Save the current document with another name"), NULL},
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{"FileMenu", NULL, Q_("_File"), NULL, NULL, NULL},
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{"New", GTK_STOCK_NEW, Q_("_New"), "<Ctrl>N",
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Q_("Create a new diagram"),
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G_CALLBACK (on_action_new)},
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{"Open", GTK_STOCK_OPEN, Q_("_Open..."), "<Ctrl>O",
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Q_("Open a diagram"),
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G_CALLBACK (on_action_open)},
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{"Save", GTK_STOCK_SAVE, Q_("_Save"), "<Ctrl>S",
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Q_("Save the current diagram"),
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G_CALLBACK (on_action_save)},
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{"SaveAs", GTK_STOCK_SAVE_AS, Q_("Save _As..."), "<Shift><Ctrl>S",
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Q_("Save the current diagram with another name"),
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G_CALLBACK (on_action_save_as)},
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{"Export", NULL, Q_("_Export"), NULL,
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Q_("Export the document"), NULL},
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{"Quit", GTK_STOCK_QUIT, NULL, NULL,
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Q_("Export the diagram"),
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NULL},
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{"Quit", GTK_STOCK_QUIT, Q_("_Quit"), "<Ctrl>Q",
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Q_("Quit the application"),
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G_CALLBACK (gtk_main_quit)},
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G_CALLBACK (on_action_quit)},
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{"EditMenu", NULL, Q_("_Edit")},
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{"EditMenu", NULL, Q_("_Edit"), NULL, NULL, NULL},
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/* XXX: Don't implement these yet: */
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/*
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{"Cut", GTK_STOCK_CUT, NULL, NULL, NULL, NULL},
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{"Copy", GTK_STOCK_COPY, NULL, NULL, NULL, NULL},
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{"Paste", GTK_STOCK_PASTE, NULL, NULL, NULL, NULL},
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{"Cut", GTK_STOCK_CUT, Q_("Cu_t"), "<Ctrl>X", NULL, NULL},
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{"Copy", GTK_STOCK_COPY, Q_("_Copy"), "<Ctrl>C", NULL, NULL},
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{"Paste", GTK_STOCK_PASTE, Q_("_Paste"), "<Ctrl>V", NULL, NULL},
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*/
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{"Delete", GTK_STOCK_DELETE, NULL, NULL,
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Q_("Delete the contents of the selection"), NULL},
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{"SelectAll", GTK_STOCK_SELECT_ALL, NULL, NULL,
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Q_("Select all objects in the document"), NULL},
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{"Delete", GTK_STOCK_DELETE, Q_("_Delete"), "Delete",
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Q_("Delete the contents of the selection"),
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NULL},
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{"SelectAll", GTK_STOCK_SELECT_ALL, Q_("Select _All"), "<Ctrl>A",
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Q_("Select all objects in the diagram"),
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NULL},
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/* TODO: View menu (zooming). */
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{"HelpMenu", NULL, Q_("_Help")},
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{"About", GTK_STOCK_ABOUT, NULL, NULL,
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{"HelpMenu", NULL, Q_("_Help"), NULL, NULL, NULL},
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{"About", GTK_STOCK_ABOUT, Q_("_About"), NULL,
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Q_("Show a dialog about this application"),
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G_CALLBACK (on_action_about)}
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};
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/* ===== Generic widget methods ============================================ */
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/**
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* ld_window_main_new:
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@ -200,7 +235,6 @@ static void
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ld_window_main_init (LdWindowMain *self)
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{
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LdWindowMainPrivate *priv;
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GtkActionGroup *action_group;
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GError *error;
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self->priv = priv = G_TYPE_INSTANCE_GET_PRIVATE
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@ -214,10 +248,11 @@ ld_window_main_init (LdWindowMain *self)
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g_signal_connect (priv->ui_manager, "disconnect-proxy",
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G_CALLBACK (on_ui_proxy_disconnected), self);
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action_group = gtk_action_group_new ("MainActions");
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gtk_action_group_add_actions (action_group, wm_action_entries,
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priv->action_group = gtk_action_group_new ("MainActions");
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gtk_action_group_add_actions (priv->action_group, wm_action_entries,
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G_N_ELEMENTS (wm_action_entries), self);
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gtk_ui_manager_insert_action_group (priv->ui_manager, action_group, 0);
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gtk_ui_manager_insert_action_group (priv->ui_manager,
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priv->action_group, 0);
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error = NULL;
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gtk_ui_manager_add_ui_from_file
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@ -263,6 +298,7 @@ ld_window_main_init (LdWindowMain *self)
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/* Configure the window. */
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g_signal_connect (self, "destroy", G_CALLBACK (gtk_main_quit), NULL);
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g_signal_connect (self, "delete-event", G_CALLBACK (on_delete), NULL);
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gtk_window_add_accel_group (GTK_WINDOW (self),
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gtk_ui_manager_get_accel_group (priv->ui_manager));
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@ -291,15 +327,25 @@ ld_window_main_init (LdWindowMain *self)
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g_signal_handler_block (priv->canvas,
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priv->symbol_menu.button_release_handler);
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/* Initialize the backend. */
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priv->document = ld_document_new ();
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g_signal_connect_data (priv->document, "changed",
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G_CALLBACK (update_title), self,
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NULL, G_CONNECT_AFTER | G_CONNECT_SWAPPED);
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priv->library = ld_library_new ();
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ld_library_load (priv->library, PROJECT_SHARE_DIR "library");
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ld_canvas_set_document (priv->canvas, priv->document);
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ld_canvas_set_library (priv->canvas, priv->library);
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load_library_toolbar (self);
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diagram_set_filename (self, NULL);
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action_set_sensitive (self, "Export", FALSE);
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action_set_sensitive (self, "Delete", FALSE);
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action_set_sensitive (self, "SelectAll", FALSE);
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/* Realize the window. */
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gtk_widget_show_all (GTK_WIDGET (self));
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@ -321,12 +367,74 @@ ld_window_main_finalize (GObject *gobject)
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* and gtk_object_destroy () should be used for it.
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*/
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g_object_unref (self->priv->library);
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g_object_unref (self->priv->document);
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g_object_unref (self->priv->ui_manager);
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g_object_unref (self->priv->action_group);
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if (self->priv->filename)
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g_free (self->priv->filename);
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/* Chain up to the parent class. */
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G_OBJECT_CLASS (ld_window_main_parent_class)->finalize (gobject);
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}
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/*
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* on_delete:
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*
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* Handle requests to close the window.
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*/
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static gboolean
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on_delete (LdWindowMain *self, GdkEvent *event, gpointer user_data)
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{
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return !may_quit (self);
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}
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/*
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* update_title:
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*
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* Update the title of the window.
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*/
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static void
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update_title (LdWindowMain *self)
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{
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gchar *title;
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gchar *name;
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g_return_if_fail (LD_IS_WINDOW_MAIN (self));
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name = diagram_get_name (self);
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title = g_strdup_printf ("%s%s - %s",
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ld_document_get_modified (self->priv->document) ? "*" : "",
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name, PROJECT_NAME);
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gtk_window_set_title (GTK_WINDOW (self), title);
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g_free (title);
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g_free (name);
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}
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/*
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* action_set_sensitive:
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* @sensitive: The sensitivity state.
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*
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* Set sensitivity of an action.
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*/
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static void
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action_set_sensitive (LdWindowMain *self, const gchar *name, gboolean sensitive)
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{
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GtkAction *action;
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g_return_if_fail (LD_IS_WINDOW_MAIN (self));
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g_return_if_fail (name != NULL);
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action = gtk_action_group_get_action (self->priv->action_group, name);
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g_return_if_fail (action != NULL);
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gtk_action_set_sensitive (action, sensitive);
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}
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/* ===== Library toolbar and symbol menu =================================== */
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/*
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* load_library_toolbar:
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*
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@ -337,6 +445,8 @@ load_library_toolbar (LdWindowMain *self)
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{
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GSList *categories;
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g_return_if_fail (LD_IS_WINDOW_MAIN (self));
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/* Clear the toolbar first, if there was already something in it. */
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gtk_container_foreach (GTK_CONTAINER (self->priv->library_toolbar),
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(GtkCallback) gtk_widget_destroy, NULL);
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@ -423,8 +533,6 @@ on_category_toggle (GtkToggleButton *toggle_button, gpointer user_data)
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LdSymbolCategory *cat;
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SymbolMenuData *data;
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g_return_if_fail (LD_IS_WINDOW_MAIN (user_data));
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cat = g_object_get_data (G_OBJECT (toggle_button), "category");
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self = LD_WINDOW_MAIN (user_data);
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priv = self->priv;
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@ -512,11 +620,6 @@ on_category_toggle (GtkToggleButton *toggle_button, gpointer user_data)
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redraw_symbol_menu (self);
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}
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/*
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* on_canvas_exposed:
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*
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* Draw a symbol menu.
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*/
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static gboolean
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on_canvas_exposed (GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
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{
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@ -573,8 +676,6 @@ on_canvas_exposed (GtkWidget *widget, GdkEventExpose *event, gpointer user_data)
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return FALSE;
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}
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static gboolean
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on_canvas_motion_notify (GtkWidget *widget, GdkEventMotion *event,
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gpointer user_data)
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@ -632,11 +733,9 @@ on_canvas_button_release (GtkWidget *widget, GdkEventButton *event,
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return FALSE;
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}
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/*
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* on_ui_proxy_connected:
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*
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* An item was connected to the manager.
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*/
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/* ===== Menu items processing ============================================= */
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static void
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on_ui_proxy_connected (GtkUIManager *ui, GtkAction *action,
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GtkWidget *proxy, LdWindowMain *window)
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@ -650,11 +749,6 @@ on_ui_proxy_connected (GtkUIManager *ui, GtkAction *action,
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}
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}
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/*
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* on_ui_proxy_disconnected:
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*
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* An item was disconnected from the manager.
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*/
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static void
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on_ui_proxy_disconnected (GtkUIManager *ui, GtkAction *action,
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GtkWidget *proxy, LdWindowMain *window)
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@ -691,6 +785,325 @@ on_menu_item_deselected (GtkItem *item, LdWindowMain *window)
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window->priv->statusbar_menu_context_id);
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}
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/* ===== Diagram handling ================================================== */
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/*
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* diagram_get_name:
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*
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* Get the name of the currently opened diagram.
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*/
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static gchar *
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diagram_get_name (LdWindowMain *self)
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{
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g_return_val_if_fail (LD_IS_WINDOW_MAIN (self), NULL);
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if (self->priv->filename)
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return g_path_get_basename (self->priv->filename);
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else
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return g_strdup (_("Unsaved Diagram"));
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}
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/*
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* diagram_set_filename:
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* @filename: The new filename. May be NULL for a new, yet unsaved, file.
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*
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* Set the filename corresponding to the currently opened document.
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* The function takes ownership of the string.
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*/
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static void
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diagram_set_filename (LdWindowMain *self, gchar *filename)
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{
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g_return_if_fail (LD_IS_WINDOW_MAIN (self));
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if (self->priv->filename)
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g_free (self->priv->filename);
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self->priv->filename = filename;
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update_title (self);
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}
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/*
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* diagram_new:
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*
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* Create a new diagram.
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*/
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static void
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diagram_new (LdWindowMain *self)
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{
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g_return_if_fail (LD_IS_WINDOW_MAIN (self));
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if (!may_close_diagram (self, "Save the changes to diagram \"%s\" before"
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" closing it and creating a new one?"))
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return;
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/* TODO: Reset canvas view to the center. */
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ld_document_clear (self->priv->document);
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ld_document_set_modified (self->priv->document, FALSE);
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diagram_set_filename (self, NULL);
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}
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/*
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* diagram_save:
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*
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* Save the current diagram.
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*/
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static void
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diagram_save (LdWindowMain *self)
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{
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GError *error;
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g_return_if_fail (LD_IS_WINDOW_MAIN (self));
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if (!self->priv->filename)
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{
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diagram_show_save_as_dialog (self);
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return;
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}
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error = NULL;
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ld_document_save_to_file (self->priv->document,
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self->priv->filename, &error);
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if (error)
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{
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GtkWidget *message_dialog;
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g_warning ("Saving failed: %s", error->message);
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g_error_free (error);
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message_dialog = gtk_message_dialog_new (GTK_WINDOW (self),
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GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
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"Failed to save the diagram");
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gtk_message_dialog_format_secondary_text
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(GTK_MESSAGE_DIALOG (message_dialog),
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"Try again or save it under another name.");
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gtk_dialog_run (GTK_DIALOG (message_dialog));
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gtk_widget_destroy (message_dialog);
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}
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else
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{
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ld_document_set_modified (self->priv->document, FALSE);
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update_title (self);
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}
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}
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/*
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* diagram_get_file_filter:
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*
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* Return value: A new #GtkFileFilter object for diagrams.
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*/
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static GtkFileFilter *
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diagram_get_file_filter (void)
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{
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GtkFileFilter *filter;
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filter = gtk_file_filter_new ();
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gtk_file_filter_set_name (filter, "Logdiag Diagrams");
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gtk_file_filter_add_pattern (filter, "*.ldd");
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return filter;
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}
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/*
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* diagram_show_open_dialog:
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*
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* Show a dialog for opening a diagram.
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*/
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static void
|
||||
diagram_show_open_dialog (LdWindowMain *self)
|
||||
{
|
||||
GtkWidget *dialog;
|
||||
|
||||
g_return_if_fail (LD_IS_WINDOW_MAIN (self));
|
||||
|
||||
if (!may_close_diagram (self, "Save the changes to diagram \"%s\" before"
|
||||
" closing it and opening another one?"))
|
||||
return;
|
||||
|
||||
dialog = gtk_file_chooser_dialog_new ("Open...", GTK_WINDOW (self),
|
||||
GTK_FILE_CHOOSER_ACTION_OPEN,
|
||||
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
|
||||
GTK_STOCK_OPEN, GTK_RESPONSE_ACCEPT,
|
||||
NULL);
|
||||
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog),
|
||||
diagram_get_file_filter ());
|
||||
|
||||
if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
|
||||
{
|
||||
gchar *filename;
|
||||
GError *error;
|
||||
|
||||
filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));
|
||||
|
||||
error = NULL;
|
||||
ld_document_load_from_file (self->priv->document, filename, &error);
|
||||
if (error)
|
||||
{
|
||||
GtkWidget *message_dialog;
|
||||
|
||||
g_warning ("Loading failed: %s", error->message);
|
||||
g_error_free (error);
|
||||
|
||||
message_dialog = gtk_message_dialog_new (GTK_WINDOW (self),
|
||||
GTK_DIALOG_MODAL, GTK_MESSAGE_ERROR, GTK_BUTTONS_OK,
|
||||
"Failed to open the file");
|
||||
gtk_message_dialog_format_secondary_text
|
||||
(GTK_MESSAGE_DIALOG (message_dialog),
|
||||
"The file is probably corrupted.");
|
||||
gtk_dialog_run (GTK_DIALOG (message_dialog));
|
||||
gtk_widget_destroy (message_dialog);
|
||||
}
|
||||
else
|
||||
{
|
||||
ld_document_set_modified (self->priv->document, FALSE);
|
||||
diagram_set_filename (self, filename);
|
||||
}
|
||||
}
|
||||
gtk_widget_destroy (dialog);
|
||||
}
|
||||
|
||||
/*
|
||||
* diagram_show_save_as_dialog:
|
||||
*
|
||||
* Show a dialog for saving the diagram.
|
||||
*/
|
||||
static void
|
||||
diagram_show_save_as_dialog (LdWindowMain *self)
|
||||
{
|
||||
GtkWidget *dialog;
|
||||
|
||||
g_return_if_fail (LD_IS_WINDOW_MAIN (self));
|
||||
|
||||
dialog = gtk_file_chooser_dialog_new ("Save As...", GTK_WINDOW (self),
|
||||
GTK_FILE_CHOOSER_ACTION_SAVE,
|
||||
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
|
||||
GTK_STOCK_SAVE, GTK_RESPONSE_ACCEPT,
|
||||
NULL);
|
||||
g_object_set (dialog, "do-overwrite-confirmation", TRUE, NULL);
|
||||
gtk_file_chooser_add_filter (GTK_FILE_CHOOSER (dialog),
|
||||
diagram_get_file_filter ());
|
||||
|
||||
if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
|
||||
{
|
||||
diagram_set_filename (self, gtk_file_chooser_get_filename
|
||||
(GTK_FILE_CHOOSER (dialog)));
|
||||
diagram_save (self);
|
||||
}
|
||||
gtk_widget_destroy (dialog);
|
||||
}
|
||||
|
||||
/*
|
||||
* may_close_diagram:
|
||||
* @dialog_message: The dialog message to display to the user if the diagram
|
||||
* has been modified.
|
||||
*
|
||||
* When no changes have been made to the current diagram, the function
|
||||
* lets the caller proceed. Otherwise the user is asked for further actions.
|
||||
* If he chooses to save the diagram, the function will handle this action.
|
||||
*
|
||||
* Return value: FALSE if the current action should be cancelled.
|
||||
* TRUE if the caller may proceed.
|
||||
*/
|
||||
static gboolean
|
||||
may_close_diagram (LdWindowMain *self, const gchar *dialog_message)
|
||||
{
|
||||
GtkWidget *message_dialog;
|
||||
gchar *name;
|
||||
gint result;
|
||||
|
||||
g_return_val_if_fail (LD_IS_WINDOW_MAIN (self), TRUE);
|
||||
g_return_val_if_fail (dialog_message != NULL, TRUE);
|
||||
|
||||
if (!ld_document_get_modified (self->priv->document))
|
||||
return TRUE;
|
||||
|
||||
name = diagram_get_name (self);
|
||||
|
||||
/* TODO: Show the time since the diagram was last saved.
|
||||
* (Record the event with g_get_current_time().)
|
||||
*/
|
||||
message_dialog = gtk_message_dialog_new (GTK_WINDOW (self),
|
||||
GTK_DIALOG_MODAL, GTK_MESSAGE_WARNING, GTK_BUTTONS_NONE,
|
||||
dialog_message, name);
|
||||
gtk_message_dialog_format_secondary_text
|
||||
(GTK_MESSAGE_DIALOG (message_dialog),
|
||||
"If you don't save, changes will be permanently lost.");
|
||||
gtk_dialog_add_buttons (GTK_DIALOG (message_dialog),
|
||||
"Close _without Saving", GTK_RESPONSE_NO,
|
||||
GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
|
||||
GTK_STOCK_SAVE, GTK_RESPONSE_YES,
|
||||
NULL);
|
||||
|
||||
result = gtk_dialog_run (GTK_DIALOG (message_dialog));
|
||||
gtk_widget_destroy (message_dialog);
|
||||
g_free (name);
|
||||
|
||||
switch (result)
|
||||
{
|
||||
case GTK_RESPONSE_NO:
|
||||
return TRUE;
|
||||
case GTK_RESPONSE_YES:
|
||||
diagram_save (self);
|
||||
return TRUE;
|
||||
case GTK_RESPONSE_CANCEL:
|
||||
case GTK_RESPONSE_DELETE_EVENT:
|
||||
return FALSE;
|
||||
default:
|
||||
g_assert_not_reached ();
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* may_quit:
|
||||
*
|
||||
* A variant on may_close_diagram() for the occasion of closing
|
||||
* the whole application.
|
||||
*
|
||||
* Return value: TRUE if the application may quit, FALSE otherwise.
|
||||
*/
|
||||
static gboolean
|
||||
may_quit (LdWindowMain *self)
|
||||
{
|
||||
g_return_val_if_fail (LD_IS_WINDOW_MAIN (self), TRUE);
|
||||
|
||||
return may_close_diagram (self,
|
||||
"Save the changes to diagram \"%s\" before closing?");
|
||||
}
|
||||
|
||||
|
||||
/* ===== User interface actions ============================================ */
|
||||
|
||||
static void
|
||||
on_action_new (GtkAction *action, LdWindowMain *self)
|
||||
{
|
||||
diagram_new (self);
|
||||
}
|
||||
|
||||
static void
|
||||
on_action_open (GtkAction *action, LdWindowMain *self)
|
||||
{
|
||||
diagram_show_open_dialog (self);
|
||||
}
|
||||
|
||||
static void
|
||||
on_action_save (GtkAction *action, LdWindowMain *self)
|
||||
{
|
||||
diagram_save (self);
|
||||
}
|
||||
|
||||
static void
|
||||
on_action_save_as (GtkAction *action, LdWindowMain *self)
|
||||
{
|
||||
diagram_show_save_as_dialog (self);
|
||||
}
|
||||
|
||||
static void
|
||||
on_action_quit (GtkAction *action, LdWindowMain *self)
|
||||
{
|
||||
if (may_quit (self))
|
||||
gtk_widget_destroy (GTK_WIDGET (self));
|
||||
}
|
||||
|
||||
static void
|
||||
on_action_about (GtkAction *action, LdWindowMain *self)
|
||||
{
|
||||
|
|
|
|||
Loading…
Reference in New Issue