diff options
Diffstat (limited to 'lib/egg/eggdropdowntoolbutton.c')
| -rw-r--r-- | lib/egg/eggdropdowntoolbutton.c | 411 |
1 files changed, 411 insertions, 0 deletions
diff --git a/lib/egg/eggdropdowntoolbutton.c b/lib/egg/eggdropdowntoolbutton.c new file mode 100644 index 000000000..0ffe2f588 --- /dev/null +++ b/lib/egg/eggdropdowntoolbutton.c @@ -0,0 +1,411 @@ +/* GTK - The GIMP Toolkit + * + * Copyright (C) 2003 Ricardo Fernandez Pascual + * Copyright (C) 2004 Paolo Borelli + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + + +#include "config.h" + +#include "eggdropdowntoolbutton.h" + +#include <gtk/gtktogglebutton.h> +#include <gtk/gtkarrow.h> +#include <gtk/gtkhbox.h> +#include <gtk/gtkmenu.h> +#include <gtk/gtkmain.h> +#include <gdk/gdkkeysyms.h> + + +#define EGG_DROPDOWN_TOOL_BUTTON_GET_PRIVATE(object)(G_TYPE_INSTANCE_GET_PRIVATE ((object), EGG_TYPE_DROPDOWN_TOOL_BUTTON, EggDropdownToolButtonPrivate)) + +struct _EggDropdownToolButtonPrivate +{ + GtkWidget *button; + GtkWidget *arrow_button; + GtkMenu *menu; +}; + +static void egg_dropdown_tool_button_init (EggDropdownToolButton *button); +static void egg_dropdown_tool_button_class_init (EggDropdownToolButtonClass *klass); +static void egg_dropdown_tool_button_finalize (GObject *object); + +enum { + MENU_ACTIVATED, + LAST_SIGNAL +}; + +static gint signals[LAST_SIGNAL]; + +static GObjectClass *parent_class = NULL; + +GType +egg_dropdown_tool_button_get_type (void) +{ + static GType type = 0; + + if (type == 0) + { + static const GTypeInfo info = + { + sizeof (EggDropdownToolButtonClass), + (GBaseInitFunc) 0, + (GBaseFinalizeFunc) 0, + (GClassInitFunc) egg_dropdown_tool_button_class_init, + (GClassFinalizeFunc) 0, + NULL, + sizeof (EggDropdownToolButton), + 0, /* n_preallocs */ + (GInstanceInitFunc) egg_dropdown_tool_button_init + }; + + type = g_type_register_static (GTK_TYPE_TOOL_BUTTON, + "EggDropdownToolButton", + &info, 0); + } + + return type; +} + +static gboolean +egg_dropdown_tool_button_set_tooltip (GtkToolItem *tool_item, + GtkTooltips *tooltips, + const char *tip_text, + const char *tip_private) +{ + EggDropdownToolButton *button; + + g_return_val_if_fail (EGG_IS_DROPDOWN_TOOL_BUTTON (tool_item), FALSE); + + button = EGG_DROPDOWN_TOOL_BUTTON (tool_item); + gtk_tooltips_set_tip (tooltips, button->priv->button, tip_text, tip_private); + + return TRUE; +} + +static void +egg_dropdown_tool_button_class_init (EggDropdownToolButtonClass *klass) +{ + GObjectClass *object_class; + GtkToolItemClass *toolitem_class; + GtkToolButtonClass *toolbutton_class; + + parent_class = g_type_class_peek_parent (klass); + + object_class = (GObjectClass *)klass; + toolitem_class = (GtkToolItemClass *)klass; + toolbutton_class = (GtkToolButtonClass *)klass; + + object_class->finalize = egg_dropdown_tool_button_finalize; + toolitem_class->set_tooltip = egg_dropdown_tool_button_set_tooltip; + + signals[MENU_ACTIVATED] = + g_signal_new ("menu-activated", + G_OBJECT_CLASS_TYPE (klass), + G_SIGNAL_RUN_FIRST, + G_STRUCT_OFFSET (EggDropdownToolButtonClass, menu_activated), + NULL, NULL, + g_cclosure_marshal_VOID__VOID, + G_TYPE_NONE, 0); + + g_type_class_add_private (object_class, sizeof (EggDropdownToolButtonPrivate)); +} + +static void +button_state_changed_cb (GtkWidget *widget, + GtkStateType previous_state, + EggDropdownToolButton *button) +{ + EggDropdownToolButtonPrivate *priv = button->priv; + GtkWidget *b; + GtkStateType state = GTK_WIDGET_STATE (widget); + + b = (widget == priv->arrow_button) ? priv->button : priv->arrow_button; + + g_signal_handlers_block_by_func (G_OBJECT (b), + G_CALLBACK (button_state_changed_cb), + button); + + if (state == GTK_STATE_PRELIGHT && + previous_state != GTK_STATE_ACTIVE) + { + gtk_widget_set_state (b, state); + } + else if (state == GTK_STATE_NORMAL) + { + gtk_widget_set_state (b, state); + } + else if (state == GTK_STATE_ACTIVE) + { + gtk_widget_set_state (b, GTK_STATE_NORMAL); + } + + g_signal_handlers_unblock_by_func (G_OBJECT (b), + G_CALLBACK (button_state_changed_cb), + button); +} + +static void +menu_position_func (GtkMenu *menu, + int *x, + int *y, + gboolean *push_in, + EggDropdownToolButton *button) +{ + EggDropdownToolButtonPrivate *priv; + GtkWidget *widget; + GtkRequisition menu_requisition; + int max_x, max_y; + + priv = button->priv; + widget = GTK_WIDGET (button); + + gdk_window_get_origin (widget->window, x, y); + gtk_widget_size_request (GTK_WIDGET (priv->menu), &menu_requisition); + + if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) + *x += widget->allocation.x + + widget->allocation.width - + menu_requisition.width; + else + *x += widget->allocation.x; + + *y += widget->allocation.y + widget->allocation.height; + + /* Make sure we are on the screen. */ + max_x = MAX (0, gdk_screen_width () - menu_requisition.width); + max_y = MAX (0, gdk_screen_height () - menu_requisition.height); + + *x = CLAMP (*x, 0, max_x); + *y = CLAMP (*y, 0, max_y); +} + +static void +popup_menu_under_arrow (EggDropdownToolButton *button, + GdkEventButton *event) +{ + EggDropdownToolButtonPrivate *priv = button->priv; + + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), TRUE); + + g_signal_emit (button, signals[MENU_ACTIVATED], 0); + + if (!priv->menu) + return; + + gtk_menu_popup (priv->menu, NULL, NULL, + (GtkMenuPositionFunc) menu_position_func, + button, + event ? event->button : 0, + event ? event->time : gtk_get_current_event_time ()); +} + +static gboolean +arrow_button_press_event_cb (GtkWidget *widget, + GdkEventButton *event, + EggDropdownToolButton *button) +{ + popup_menu_under_arrow (button, event); + + return TRUE; +} + +static gboolean +arrow_key_press_event_cb (GtkWidget *widget, + GdkEventKey *event, + EggDropdownToolButton *button) +{ + if (event->keyval == GDK_space || + event->keyval == GDK_KP_Space || + event->keyval == GDK_Return || + event->keyval == GDK_KP_Enter || + event->keyval == GDK_Menu) + { + popup_menu_under_arrow (button, NULL); + } + + return FALSE; +} + +/* right click on the button shows the menu */ +static gboolean +button_button_press_event_cb (GtkWidget *widget, + GdkEventButton *event, + EggDropdownToolButton *button) +{ + if (event->button == 3) + { + popup_menu_under_arrow (button, event); + + return TRUE; + } + + return FALSE; +} + +static void +button_popup_menu_cb (GtkWidget *widget, + EggDropdownToolButton *button) +{ + popup_menu_under_arrow (button, NULL); +} + +static void +egg_dropdown_tool_button_init (EggDropdownToolButton *button) +{ + GtkWidget *hbox; + GtkWidget *arrow; + GtkWidget *arrow_button; + GtkWidget *real_button; + + button->priv = EGG_DROPDOWN_TOOL_BUTTON_GET_PRIVATE (button); + + gtk_tool_item_set_homogeneous (GTK_TOOL_ITEM (button), FALSE); + + hbox = gtk_hbox_new (FALSE, 0); + + real_button = GTK_BIN (button)->child; + g_object_ref (real_button); + gtk_container_remove (GTK_CONTAINER (button), real_button); + gtk_container_add (GTK_CONTAINER (hbox), real_button); + g_object_unref (real_button); + + arrow_button = gtk_toggle_button_new (); + arrow = gtk_arrow_new (GTK_ARROW_DOWN, GTK_SHADOW_OUT); + gtk_button_set_relief (GTK_BUTTON (arrow_button), GTK_RELIEF_NONE); + gtk_container_add (GTK_CONTAINER (arrow_button), arrow); + + gtk_box_pack_end (GTK_BOX (hbox), arrow_button, + FALSE, FALSE, 0); + gtk_widget_show_all (hbox); + + gtk_container_add (GTK_CONTAINER (button), hbox); + + button->priv->button = real_button; + button->priv->arrow_button = arrow_button; + + g_signal_connect (real_button, "state_changed", + G_CALLBACK (button_state_changed_cb), button); + g_signal_connect (real_button, "button_press_event", + G_CALLBACK (button_button_press_event_cb), button); + g_signal_connect (real_button, "popup_menu", + G_CALLBACK (button_popup_menu_cb), button); + g_signal_connect (arrow_button, "state_changed", + G_CALLBACK (button_state_changed_cb), button); + g_signal_connect (arrow_button, "key_press_event", + G_CALLBACK (arrow_key_press_event_cb), button); + g_signal_connect (arrow_button, "button_press_event", + G_CALLBACK (arrow_button_press_event_cb), button); +} + +static void +egg_dropdown_tool_button_finalize (GObject *object) +{ + EggDropdownToolButton *button; + + button = EGG_DROPDOWN_TOOL_BUTTON (object); + + if (button->priv->menu) + g_object_unref (button->priv->menu); + + G_OBJECT_CLASS (parent_class)->finalize (object); +} + +GtkToolItem * +egg_dropdown_tool_button_new (void) +{ + EggDropdownToolButton *button; + + button = g_object_new (EGG_TYPE_DROPDOWN_TOOL_BUTTON, + NULL); + + return GTK_TOOL_ITEM (button); +} + +GtkToolItem * +egg_dropdown_tool_button_new_from_stock (const gchar *stock_id) +{ + EggDropdownToolButton *button; + + g_return_val_if_fail (stock_id != NULL, NULL); + + button = g_object_new (EGG_TYPE_DROPDOWN_TOOL_BUTTON, + "stock_id", stock_id, + NULL); + + return GTK_TOOL_ITEM (button); +} + +/* Callback for the "deactivate" signal on the pop-up menu. + * This is used so that we unset the state of the toggle button + * when the pop-up menu disappears. + */ +static int +menu_deactivate_cb (GtkMenuShell *menu_shell, + EggDropdownToolButton *button) +{ + EggDropdownToolButtonPrivate *priv = button->priv; + + gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (priv->arrow_button), FALSE); + + return TRUE; +} + +void +egg_dropdown_tool_button_set_menu (EggDropdownToolButton *button, + GtkMenuShell *menu) +{ + EggDropdownToolButtonPrivate *priv; + + g_return_if_fail (EGG_IS_DROPDOWN_TOOL_BUTTON (button)); + g_return_if_fail (GTK_IS_MENU (menu)); + + priv = button->priv; + + if (priv->menu != GTK_MENU (menu)) + { + if (priv->menu) + g_object_unref (priv->menu); + + priv->menu = GTK_MENU (menu); + + g_object_ref (priv->menu); + gtk_object_sink (GTK_OBJECT (priv->menu)); + + g_signal_connect (button->priv->menu, "deactivate", + G_CALLBACK (menu_deactivate_cb), button); + } +} + +GtkMenuShell * +egg_dropdown_tool_button_get_menu (EggDropdownToolButton *button) +{ + return GTK_MENU_SHELL (button->priv->menu); +} + +void +egg_dropdown_tool_button_set_arrow_tooltip (EggDropdownToolButton *button, + GtkTooltips *tooltips, + const gchar *tip_text, + const gchar *tip_private) +{ + g_return_if_fail (EGG_IS_DROPDOWN_TOOL_BUTTON (button)); + + gtk_tooltips_set_tip (tooltips, button->priv->arrow_button, tip_text, tip_private); +} + |