diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ld-window-main.c | 559 |
1 files changed, 52 insertions, 507 deletions
diff --git a/src/ld-window-main.c b/src/ld-window-main.c index d1ad567..df0e5fb 100644 --- a/src/ld-window-main.c +++ b/src/ld-window-main.c @@ -23,47 +23,6 @@ * #LdWindowMain is the main window of the application. */ -/* - * SymbolMenuItem: - * - * Data related to a symbol in an open symbol menu. - */ -typedef struct _SymbolMenuItem SymbolMenuItem; - -struct _SymbolMenuItem -{ - LdSymbol *symbol; - - gint width; - gdouble dx; - gdouble scale; -}; - -/* - * SymbolMenuData: - * - * Data related to the currently opened symbol menu. - */ -typedef struct _SymbolMenuData SymbolMenuData; - -struct _SymbolMenuData -{ - gulong expose_handler; - gulong motion_notify_handler; - gulong button_press_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; -}; - struct _LdWindowMainPrivate { GtkUIManager *ui_manager; @@ -86,33 +45,13 @@ struct _LdWindowMainPrivate GtkWidget *statusbar; guint statusbar_symbol_context_id; guint statusbar_menu_context_id; - - SymbolMenuData symbol_menu; }; -#define LIBRARY_TOOLBAR_ICON_WIDTH 32 - /* ===== Local functions =================================================== */ static void ld_window_main_finalize (GObject *gobject); -static void load_library_toolbar (LdWindowMain *self); -static void load_category_cb (gpointer data, gpointer user_data); -static GdkPixbuf *recolor_pixbuf (GdkPixbuf *pbuf, GdkColor *color); - -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_press (GtkWidget *widget, - GdkEventButton *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, @@ -143,6 +82,13 @@ 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); @@ -276,7 +222,7 @@ ld_window_main_init (LdWindowMain *self) priv->toolbar = gtk_ui_manager_get_widget (priv->ui_manager, "/Toolbar"); /* Create the remaining widgets. */ - priv->library_toolbar = gtk_toolbar_new (); + 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); @@ -316,32 +262,6 @@ ld_window_main_init (LdWindowMain *self) gtk_window_set_default_size (GTK_WINDOW (self), 500, 400); gtk_window_set_position (GTK_WINDOW (self), GTK_WIN_POS_CENTER); - /* Hook canvas signals. */ - /* XXX: 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_press_handler = g_signal_connect (priv->canvas, - "button-press-event", G_CALLBACK (on_canvas_button_press), self); - priv->symbol_menu.button_release_handler = g_signal_connect (priv->canvas, - "button-release-event", G_CALLBACK (on_canvas_button_release), self); - - /* Don't process the signals 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_press_handler); - g_signal_handler_block (priv->canvas, - priv->symbol_menu.button_release_handler); - /* Initialize the backend. */ priv->diagram = ld_diagram_new (); @@ -357,7 +277,18 @@ ld_window_main_init (LdWindowMain *self) ld_canvas_set_diagram (priv->canvas, priv->diagram); ld_canvas_set_library (priv->canvas, priv->library); - load_library_toolbar (self); + ld_library_toolbar_set_library (LD_LIBRARY_TOOLBAR (priv->library_toolbar), + priv->library); + ld_library_toolbar_set_canvas (LD_LIBRARY_TOOLBAR (priv->library_toolbar), + priv->canvas); + + 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, "Export", FALSE); @@ -372,11 +303,6 @@ ld_window_main_init (LdWindowMain *self) 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) { @@ -454,419 +380,6 @@ action_set_sensitive (LdWindowMain *self, const gchar *name, gboolean sensitive) } -/* ===== Library toolbar and symbol menu =================================== */ - -/* - * load_library_toolbar: - * - * Load symbols from the library into the library toolbar. - */ -static void -load_library_toolbar (LdWindowMain *self) -{ - GSList *categories; - - g_return_if_fail (LD_IS_WINDOW_MAIN (self)); - - /* Clear the toolbar first, if there was already something in it. */ - gtk_container_foreach (GTK_CONTAINER (self->priv->library_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 library toolbar. - */ -static void -load_category_cb (gpointer data, gpointer user_data) -{ - LdWindowMain *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_WINDOW_MAIN (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 canvas. */ - g_object_set (button, "can-focus", FALSE, NULL); - - /* 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); - - human_name = ld_symbol_category_get_human_name (cat); - gtk_tool_item_set_tooltip_text (item, human_name); - gtk_toolbar_insert (GTK_TOOLBAR (self->priv->library_toolbar), item, 0); -} - -/* - * recolor_pixbuf: - * - * Change the color of all pixels to @color, - * but leave the alpha channel intact. - */ -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); - - 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; -} - -/* - * redraw_symbol_menu: - * - * Make the area for symbol menu redraw itself. - */ -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; - - 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_press_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; - - gtk_statusbar_pop (GTK_STATUSBAR (self->priv->statusbar), - self->priv->statusbar_menu_context_id); - - gtk_grab_remove (GTK_WIDGET (self->priv->canvas)); - } - 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_press_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) - { - LdRectangle 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)) * 0.5; - item->width = data->menu_height * 0.5 + item->scale * area.width; - item->dx = item->width * 0.5 + item->scale * (area.width * 0.5 - - MAX (ABS (area.x), ABS (area.x + area.width))); - - menu_width += item++->width; - } - data->menu_width = menu_width; - - gtk_grab_add (GTK_WIDGET (self->priv->canvas)); - } - redraw_symbol_menu (self); -} - -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 + 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, 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, at_cursor = -1; - - self = LD_WINDOW_MAIN (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_canvas_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_canvas_motion_notify_end: - if (data->active_item != at_cursor) - { - const gchar *symbol_name; - - gtk_statusbar_pop (GTK_STATUSBAR (self->priv->statusbar), - self->priv->statusbar_menu_context_id); - - if (at_cursor != -1) - { - symbol_name = ld_symbol_get_human_name (data->items[i].symbol); - gtk_statusbar_push (GTK_STATUSBAR (self->priv->statusbar), - self->priv->statusbar_menu_context_id, symbol_name); - } - } - data->active_item = at_cursor; - redraw_symbol_menu (self); - return FALSE; -} - -static gboolean -on_canvas_button_press (GtkWidget *widget, GdkEventButton *event, - gpointer user_data) -{ - LdWindowMain *self; - SymbolMenuData *data; - - self = LD_WINDOW_MAIN (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_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; - - if (data->active_item != -1) - { - LdDiagramSymbol *symbol; - const gchar *category_name, *symbol_name; - gchar *klass; - - category_name = ld_symbol_category_get_name - (g_object_get_data (G_OBJECT (data->active_button), "category")); - symbol_name = ld_symbol_get_name - (data->items[data->active_item].symbol); - - klass = g_build_path (LD_LIBRARY_IDENTIFIER_SEPARATOR, - category_name, symbol_name, NULL); - symbol = ld_diagram_symbol_new (NULL); - ld_diagram_symbol_set_class (symbol, klass); - g_free (klass); - - ld_canvas_add_object_begin (self->priv->canvas, - LD_DIAGRAM_OBJECT (symbol)); - } - - /* 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; -} - - /* ===== Menu items processing ============================================= */ static void @@ -1216,6 +729,38 @@ 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_canvas_add_object_begin (self->priv->canvas, + LD_DIAGRAM_OBJECT (diagram_symbol)); +} + +static void on_action_new (GtkAction *action, LdWindowMain *self) { diagram_new (self); |