/* GTK - The GIMP Toolkit * * Copyright (C) 2003 Sun Microsystems, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library 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. * * Authors: * Mark McLoughlin */ #include #include "gtkexpander.h" #include "gtklabel.h" #include "gtkcontainer.h" #include "gtkmarshalers.h" #include "gtkmain.h" #include "gtkintl.h" #include "gtkprivate.h" #include #define GTK_EXPANDER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), GTK_TYPE_EXPANDER, GtkExpanderPrivate)) #define DEFAULT_EXPANDER_SIZE 10 #define DEFAULT_EXPANDER_SPACING 2 enum { PROP_0, PROP_EXPANDED, PROP_LABEL, PROP_USE_UNDERLINE, PROP_USE_MARKUP, PROP_PADDING, PROP_LABEL_WIDGET }; struct _GtkExpanderPrivate { GtkWidget *label_widget; GdkWindow *event_window; gint spacing; GtkExpanderStyle expander_style; guint animation_timeout; guint expanded : 1; guint use_underline : 1; guint use_markup : 1; guint button_down : 1; guint prelight : 1; }; static void gtk_expander_class_init (GtkExpanderClass *klass); static void gtk_expander_init (GtkExpander *expander); static void gtk_expander_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec); static void gtk_expander_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static void gtk_expander_destroy (GtkObject *object); static void gtk_expander_realize (GtkWidget *widget); static void gtk_expander_unrealize (GtkWidget *widget); static void gtk_expander_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_expander_size_allocate (GtkWidget *widget, GtkAllocation *allocation); static void gtk_expander_map (GtkWidget *widget); static void gtk_expander_unmap (GtkWidget *widget); static gboolean gtk_expander_expose (GtkWidget *widget, GdkEventExpose *event); static gboolean gtk_expander_button_press (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_expander_button_release (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_expander_enter_notify (GtkWidget *widget, GdkEventCrossing *event); static gboolean gtk_expander_leave_notify (GtkWidget *widget, GdkEventCrossing *event); static gboolean gtk_expander_focus (GtkWidget *widget, GtkDirectionType direction); static void gtk_expander_grab_notify (GtkWidget *widget, gboolean was_grabbed); static void gtk_expander_state_changed (GtkWidget *widget, GtkStateType previous_state); static void gtk_expander_add (GtkContainer *container, GtkWidget *widget); static void gtk_expander_remove (GtkContainer *container, GtkWidget *widget); static void gtk_expander_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data); static void gtk_expander_activate (GtkExpander *expander); static GtkBinClass *parent_class = NULL; GType gtk_expander_get_type (void) { static GType expander_type = 0; if (!expander_type) { static const GTypeInfo expander_info = { sizeof (GtkExpanderClass), NULL, /* base_init */ NULL, /* base_finalize */ (GClassInitFunc) gtk_expander_class_init, NULL, /* class_finalize */ NULL, /* class_data */ sizeof (GtkExpander), 0, /* n_preallocs */ (GInstanceInitFunc) gtk_expander_init, }; expander_type = g_type_register_static (GTK_TYPE_BIN, "GtkExpander", &expander_info, 0); } return expander_type; } static void gtk_expander_class_init (GtkExpanderClass *klass) { GObjectClass *gobject_class; GtkObjectClass *object_class; GtkWidgetClass *widget_class; GtkContainerClass *container_class; parent_class = g_type_class_peek_parent (klass); gobject_class = (GObjectClass *) klass; object_class = (GtkObjectClass *) klass; widget_class = (GtkWidgetClass *) klass; container_class = (GtkContainerClass *) klass; gobject_class->set_property = gtk_expander_set_property; gobject_class->get_property = gtk_expander_get_property; object_class->destroy = gtk_expander_destroy; widget_class->realize = gtk_expander_realize; widget_class->unrealize = gtk_expander_unrealize; widget_class->size_request = gtk_expander_size_request; widget_class->size_allocate = gtk_expander_size_allocate; widget_class->map = gtk_expander_map; widget_class->unmap = gtk_expander_unmap; widget_class->expose_event = gtk_expander_expose; widget_class->button_press_event = gtk_expander_button_press; widget_class->button_release_event = gtk_expander_button_release; widget_class->enter_notify_event = gtk_expander_enter_notify; widget_class->leave_notify_event = gtk_expander_leave_notify; widget_class->focus = gtk_expander_focus; widget_class->grab_notify = gtk_expander_grab_notify; widget_class->state_changed = gtk_expander_state_changed; container_class->add = gtk_expander_add; container_class->remove = gtk_expander_remove; container_class->forall = gtk_expander_forall; klass->activate = gtk_expander_activate; g_type_class_add_private (klass, sizeof (GtkExpanderPrivate)); g_object_class_install_property (gobject_class, PROP_EXPANDED, g_param_spec_boolean ("expanded", P_("Expanded"), P_("Whether the expander has been opened to reveal the child widget"), FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_LABEL, g_param_spec_string ("label", P_("Label"), P_("Text of the expander's label"), NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_USE_UNDERLINE, g_param_spec_boolean ("use_underline", P_("Use underline"), P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"), FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_USE_MARKUP, g_param_spec_boolean ("use_markup", P_("Use markup"), P_("The text of the label includes XML markup. See pango_parse_markup()"), FALSE, G_PARAM_READWRITE | G_PARAM_CONSTRUCT)); g_object_class_install_property (gobject_class, PROP_PADDING, g_param_spec_int ("spacing", P_("Spacing"), P_("Space to put between the label and the child"), 0, G_MAXINT, 0, G_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_LABEL_WIDGET, g_param_spec_object ("label_widget", P_("Label widget"), P_("A widget to display in place of the usual expander label"), GTK_TYPE_WIDGET, G_PARAM_READWRITE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("expander-size", P_("Expander Size"), P_("Size of the expander arrow"), 0, G_MAXINT, DEFAULT_EXPANDER_SIZE, G_PARAM_READABLE)); gtk_widget_class_install_style_property (widget_class, g_param_spec_int ("expander-spacing", P_("Indicator Spacing"), P_("Spacing around expander arrow"), 0, G_MAXINT, DEFAULT_EXPANDER_SPACING, G_PARAM_READABLE)); widget_class->activate_signal = g_signal_new ("activate", G_TYPE_FROM_CLASS (gobject_class), G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION, G_STRUCT_OFFSET (GtkExpanderClass, activate), NULL, NULL, _gtk_marshal_VOID__VOID, G_TYPE_NONE, 0); } static void gtk_expander_init (GtkExpander *expander) { GtkExpanderPrivate *priv; expander->priv = priv = GTK_EXPANDER_GET_PRIVATE (expander); GTK_WIDGET_SET_FLAGS (expander, GTK_CAN_FOCUS); GTK_WIDGET_SET_FLAGS (expander, GTK_NO_WINDOW); priv->label_widget = NULL; priv->event_window = NULL; priv->spacing = 0; priv->expander_style = GTK_EXPANDER_COLLAPSED; priv->animation_timeout = 0; priv->expanded = FALSE; priv->use_underline = FALSE; priv->use_markup = FALSE; priv->button_down = FALSE; priv->prelight = FALSE; } static void gtk_expander_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkExpander *expander = GTK_EXPANDER (object); switch (prop_id) { case PROP_EXPANDED: gtk_expander_set_expanded (expander, g_value_get_boolean (value)); break; case PROP_LABEL: gtk_expander_set_label (expander, g_value_get_string (value)); break; case PROP_USE_UNDERLINE: gtk_expander_set_use_underline (expander, g_value_get_boolean (value)); break; case PROP_USE_MARKUP: gtk_expander_set_use_markup (expander, g_value_get_boolean (value)); break; case PROP_PADDING: gtk_expander_set_spacing (expander, g_value_get_int (value)); break; case PROP_LABEL_WIDGET: gtk_expander_set_label_widget (expander, g_value_get_object (value)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_expander_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkExpander *expander = GTK_EXPANDER (object); GtkExpanderPrivate *priv = expander->priv; switch (prop_id) { case PROP_EXPANDED: g_value_set_boolean (value, priv->expanded); break; case PROP_LABEL: g_value_set_string (value, gtk_expander_get_label (expander)); break; case PROP_USE_UNDERLINE: g_value_set_boolean (value, priv->use_underline); break; case PROP_USE_MARKUP: g_value_set_boolean (value, priv->use_markup); break; case PROP_PADDING: g_value_set_int (value, priv->spacing); break; case PROP_LABEL_WIDGET: g_value_set_object (value, priv->label_widget ? G_OBJECT (priv->label_widget) : NULL); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_expander_destroy (GtkObject *object) { GtkExpanderPrivate *priv = GTK_EXPANDER (object)->priv; if (priv->animation_timeout) { g_source_remove (priv->animation_timeout); priv->animation_timeout = 0; } GTK_OBJECT_CLASS (parent_class)->destroy (object); } static void gtk_expander_realize (GtkWidget *widget) { GtkExpanderPrivate *priv; GdkWindowAttr attributes; gint attributes_mask; gint border_width; priv = GTK_EXPANDER (widget)->priv; GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); border_width = GTK_CONTAINER (widget)->border_width; attributes.window_type = GDK_WINDOW_CHILD; attributes.x = widget->allocation.x + border_width; attributes.y = widget->allocation.y + border_width; attributes.width = widget->allocation.width - 2 * border_width; attributes.height = widget->allocation.height - 2 * border_width; attributes.wclass = GDK_INPUT_ONLY; attributes.event_mask = gtk_widget_get_events (widget) | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK; attributes_mask = GDK_WA_X | GDK_WA_Y; widget->window = gtk_widget_get_parent_window (widget); g_object_ref (widget->window); priv->event_window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (priv->event_window, widget); widget->style = gtk_style_attach (widget->style, widget->window); gtk_style_set_background (widget->style, widget->window, GTK_STATE_NORMAL); } static void gtk_expander_unrealize (GtkWidget *widget) { GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv; if (priv->event_window) { gdk_window_set_user_data (priv->event_window, NULL); gdk_window_destroy (priv->event_window); priv->event_window = NULL; } GTK_WIDGET_CLASS (parent_class)->unrealize (widget); } static void gtk_expander_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkExpander *expander; GtkBin *bin; GtkExpanderPrivate *priv; gint border_width; gint expander_size; gint expander_spacing; gboolean interior_focus; gint focus_width; gint focus_pad; bin = GTK_BIN (widget); expander = GTK_EXPANDER (widget); priv = expander->priv; border_width = GTK_CONTAINER (widget)->border_width; gtk_widget_style_get (widget, "interior-focus", &interior_focus, "focus-line-width", &focus_width, "focus-padding", &focus_pad, "expander-size", &expander_size, "expander-spacing", &expander_spacing, NULL); requisition->width = expander_size + 2 * expander_spacing + 2 * focus_width + 2 * focus_pad; requisition->height = interior_focus ? (2 * focus_width + 2 * focus_pad) : 0; if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget)) { GtkRequisition label_requisition; gtk_widget_size_request (priv->label_widget, &label_requisition); requisition->width += label_requisition.width; requisition->height += label_requisition.height; } requisition->height = MAX (expander_size + 2 * expander_spacing, requisition->height); if (!interior_focus) requisition->height += 2 * focus_width + 2 * focus_pad; if (bin->child && GTK_WIDGET_CHILD_VISIBLE (bin->child)) { GtkRequisition child_requisition; gtk_widget_size_request (bin->child, &child_requisition); requisition->width = MAX (requisition->width, child_requisition.width); requisition->height += child_requisition.height + priv->spacing; } requisition->width += 2 * border_width; requisition->height += 2 * border_width; } static void get_expander_bounds (GtkExpander *expander, GdkRectangle *rect) { GtkWidget *widget; GtkBin *bin; GtkExpanderPrivate *priv; gint border_width; gint expander_size; gint expander_spacing; gboolean interior_focus; gint focus_width; gint focus_pad; gboolean ltr; widget = GTK_WIDGET (expander); bin = GTK_BIN (expander); priv = expander->priv; border_width = GTK_CONTAINER (expander)->border_width; gtk_widget_style_get (widget, "interior-focus", &interior_focus, "focus-line-width", &focus_width, "focus-padding", &focus_pad, "expander-size", &expander_size, "expander-spacing", &expander_spacing, NULL); ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL; rect->x = widget->allocation.x + border_width; rect->y = widget->allocation.y + border_width; if (ltr) rect->x += expander_spacing; else rect->x += widget->allocation.width - 2 * border_width - expander_spacing - expander_size; if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget)) { GtkAllocation label_allocation; label_allocation = priv->label_widget->allocation; if (expander_size < label_allocation.height) rect->y += focus_width + focus_pad + (label_allocation.height - expander_size) / 2; else rect->y += expander_spacing; } else { rect->y += expander_spacing; } if (!interior_focus) { if (ltr) rect->x += focus_width + focus_pad; else rect->x -= focus_width + focus_pad; rect->y += focus_width + focus_pad; } rect->width = rect->height = expander_size; } static void gtk_expander_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkExpander *expander; GtkBin *bin; GtkExpanderPrivate *priv; GtkRequisition child_requisition; gboolean child_visible = FALSE; gint border_width; gint expander_size; gint expander_spacing; gboolean interior_focus; gint focus_width; gint focus_pad; gint label_height; expander = GTK_EXPANDER (widget); bin = GTK_BIN (widget); priv = expander->priv; border_width = GTK_CONTAINER (widget)->border_width; gtk_widget_style_get (widget, "interior-focus", &interior_focus, "focus-line-width", &focus_width, "focus-padding", &focus_pad, "expander-size", &expander_size, "expander-spacing", &expander_spacing, NULL); child_requisition.width = 0; child_requisition.height = 0; if (bin->child && GTK_WIDGET_CHILD_VISIBLE (bin->child)) { child_visible = TRUE; gtk_widget_get_child_requisition (bin->child, &child_requisition); } widget->allocation = *allocation; if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget)) { GtkAllocation label_allocation; GtkRequisition label_requisition; gboolean ltr; gtk_widget_get_child_requisition (priv->label_widget, &label_requisition); ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL; label_allocation.x = widget->allocation.x + border_width + focus_width + focus_pad; if (ltr) label_allocation.x += expander_size + 2 * expander_spacing; label_allocation.y = widget->allocation.y + border_width + focus_width + focus_pad; label_allocation.width = MIN (label_requisition.width, allocation->width - 2 * border_width - expander_size - 2 * expander_spacing - 2 * focus_width - 2 * focus_pad); label_allocation.width = MAX (label_allocation.width, 1); label_allocation.height = MIN (label_requisition.height, allocation->height - 2 * border_width - 2 * focus_width - 2 * focus_pad - (child_visible ? priv->spacing : 0)); label_allocation.height = MAX (label_allocation.height, 1); gtk_widget_size_allocate (priv->label_widget, &label_allocation); label_height = label_allocation.height; } else { label_height = 0; } if (GTK_WIDGET_REALIZED (widget)) { GdkRectangle rect; get_expander_bounds (expander, &rect); gdk_window_move_resize (priv->event_window, allocation->x + border_width, rect.y, MAX (allocation->width - 2 * border_width, 1), rect.width); } if (child_visible) { GtkAllocation child_allocation; gint top_height; top_height = MAX (2 * expander_spacing + expander_size, label_height + (interior_focus ? 2 * focus_width + 2 * focus_pad : 0)); child_allocation.x = widget->allocation.x + border_width; child_allocation.y = widget->allocation.y + border_width + top_height + priv->spacing; if (!interior_focus) child_allocation.y += 2 * focus_width + 2 * focus_pad; child_allocation.width = MAX (allocation->width - 2 * border_width, 1); child_allocation.height = allocation->height - top_height - 2 * border_width - priv->spacing - (!interior_focus ? 2 * focus_width + 2 * focus_pad : 0); child_allocation.height = MAX (child_allocation.height, 1); gtk_widget_size_allocate (bin->child, &child_allocation); } } static void gtk_expander_map (GtkWidget *widget) { GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv; if (priv->label_widget) gtk_widget_map (priv->label_widget); GTK_WIDGET_CLASS (parent_class)->map (widget); if (priv->event_window) gdk_window_show (priv->event_window); } static void gtk_expander_unmap (GtkWidget *widget) { GtkExpanderPrivate *priv = GTK_EXPANDER (widget)->priv; if (priv->event_window) gdk_window_hide (priv->event_window); GTK_WIDGET_CLASS (parent_class)->unmap (widget); if (priv->label_widget) gtk_widget_unmap (priv->label_widget); } static void gtk_expander_paint_prelight (GtkExpander *expander) { GtkWidget *widget; GtkContainer *container; GtkExpanderPrivate *priv; GdkRectangle area; gboolean interior_focus; int focus_width; int focus_pad; int expander_size; int expander_spacing; priv = expander->priv; widget = GTK_WIDGET (expander); container = GTK_CONTAINER (expander); gtk_widget_style_get (widget, "interior-focus", &interior_focus, "focus-line-width", &focus_width, "focus-padding", &focus_pad, "expander-size", &expander_size, "expander-spacing", &expander_spacing, NULL); area.x = widget->allocation.x + container->border_width; area.y = widget->allocation.y + container->border_width; area.width = widget->allocation.width - (2 * container->border_width); if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget)) area.height = priv->label_widget->allocation.height; else area.height = 0; area.height += interior_focus ? (focus_width + focus_pad) * 2 : 0; area.height = MAX (area.height, expander_size + 2 * expander_spacing); area.height += !interior_focus ? (focus_width + focus_pad) * 2 : 0; gtk_paint_flat_box (widget->style, widget->window, GTK_STATE_PRELIGHT, GTK_SHADOW_ETCHED_OUT, &area, widget, "expander", area.x, area.y, area.width, area.height); } static void gtk_expander_paint (GtkExpander *expander) { GtkWidget *widget; GdkRectangle clip; GtkStateType state; widget = GTK_WIDGET (expander); get_expander_bounds (expander, &clip); state = widget->state; if (expander->priv->prelight) { state = GTK_STATE_PRELIGHT; gtk_expander_paint_prelight (expander); } gtk_paint_expander (widget->style, widget->window, state, &clip, widget, "expander", clip.x + clip.width / 2, clip.y + clip.height / 2, expander->priv->expander_style); } static void gtk_expander_paint_focus (GtkExpander *expander, GdkRectangle *area) { GtkWidget *widget; GtkExpanderPrivate *priv; gint x, y, width, height; gboolean interior_focus; gint border_width; gint focus_width; gint focus_pad; gint expander_size; gint expander_spacing; gboolean ltr; widget = GTK_WIDGET (expander); priv = expander->priv; border_width = GTK_CONTAINER (widget)->border_width; gtk_widget_style_get (widget, "interior-focus", &interior_focus, "focus-line-width", &focus_width, "focus-padding", &focus_pad, "expander-size", &expander_size, "expander-spacing", &expander_spacing, NULL); ltr = gtk_widget_get_direction (widget) != GTK_TEXT_DIR_RTL; x = widget->allocation.x + border_width; y = widget->allocation.y + border_width; if (ltr && interior_focus) x += expander_spacing * 2 + expander_size; width = height = 0; if (priv->label_widget && GTK_WIDGET_VISIBLE (priv->label_widget)) { GtkAllocation label_allocation = priv->label_widget->allocation; width = label_allocation.width; height = label_allocation.height; } if (!interior_focus) { width += expander_size + 2 * expander_spacing; height = MAX (height, expander_size + 2 * expander_spacing); } width += 2 * focus_pad + 2 * focus_width; height += 2 * focus_pad + 2 * focus_width; gtk_paint_focus (widget->style, widget->window, GTK_WIDGET_STATE (widget), area, widget, "expander", x, y, width, height); } static gboolean gtk_expander_expose (GtkWidget *widget, GdkEventExpose *event) { if (GTK_WIDGET_DRAWABLE (widget)) { GtkExpander *expander = GTK_EXPANDER (widget); gtk_expander_paint (expander); if (GTK_WIDGET_HAS_FOCUS (expander)) gtk_expander_paint_focus (expander, &event->area); if (expander->priv->label_widget) gtk_container_propagate_expose (GTK_CONTAINER (widget), expander->priv->label_widget, event); GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event); } return FALSE; } static gboolean gtk_expander_button_press (GtkWidget *widget, GdkEventButton *event) { GtkExpander *expander = GTK_EXPANDER (widget); if (event->button == 1 && event->window == expander->priv->event_window) { expander->priv->button_down = TRUE; return TRUE; } return FALSE; } static gboolean gtk_expander_button_release (GtkWidget *widget, GdkEventButton *event) { GtkExpander *expander = GTK_EXPANDER (widget); if (event->button == 1 && expander->priv->button_down) { gtk_widget_activate (widget); expander->priv->button_down = FALSE; return TRUE; } return FALSE; } static void gtk_expander_grab_notify (GtkWidget *widget, gboolean was_grabbed) { if (!was_grabbed) GTK_EXPANDER (widget)->priv->button_down = FALSE; } static void gtk_expander_state_changed (GtkWidget *widget, GtkStateType previous_state) { if (!GTK_WIDGET_IS_SENSITIVE (widget)) GTK_EXPANDER (widget)->priv->button_down = FALSE; } static void gtk_expander_redraw_expander (GtkExpander *expander) { GtkWidget *widget; widget = GTK_WIDGET (expander); if (GTK_WIDGET_REALIZED (widget)) gdk_window_invalidate_rect (widget->window, &widget->allocation, FALSE); } static gboolean gtk_expander_enter_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkExpander *expander = GTK_EXPANDER (widget); GtkWidget *event_widget; event_widget = gtk_get_event_widget ((GdkEvent *) event); if (event_widget == widget && event->detail != GDK_NOTIFY_INFERIOR) { expander->priv->prelight = TRUE; if (expander->priv->label_widget) gtk_widget_set_state (expander->priv->label_widget, GTK_STATE_PRELIGHT); gtk_expander_redraw_expander (expander); } return FALSE; } static gboolean gtk_expander_leave_notify (GtkWidget *widget, GdkEventCrossing *event) { GtkExpander *expander = GTK_EXPANDER (widget); GtkWidget *event_widget; event_widget = gtk_get_event_widget ((GdkEvent *) event); if (event_widget == widget && event->detail != GDK_NOTIFY_INFERIOR) { expander->priv->prelight = FALSE; if (expander->priv->label_widget) gtk_widget_set_state (expander->priv->label_widget, GTK_STATE_NORMAL); gtk_expander_redraw_expander (expander); } return FALSE; } typedef enum { FOCUS_NONE, FOCUS_WIDGET, FOCUS_LABEL, FOCUS_CHILD } FocusSite; static gboolean focus_current_site (GtkExpander *expander, GtkDirectionType direction) { GtkWidget *current_focus; current_focus = GTK_CONTAINER (expander)->focus_child; if (!current_focus) return FALSE; return gtk_widget_child_focus (current_focus, direction); } static gboolean focus_in_site (GtkExpander *expander, FocusSite site, GtkDirectionType direction) { switch (site) { case FOCUS_WIDGET: gtk_widget_grab_focus (GTK_WIDGET (expander)); return TRUE; case FOCUS_LABEL: if (expander->priv->label_widget) return gtk_widget_child_focus (expander->priv->label_widget, direction); else return FALSE; case FOCUS_CHILD: { GtkWidget *child = gtk_bin_get_child (GTK_BIN (expander)); if (child && GTK_WIDGET_CHILD_VISIBLE (child)) return gtk_widget_child_focus (child, direction); else return FALSE; } case FOCUS_NONE: break; } g_assert_not_reached (); return FALSE; } static FocusSite get_next_site (GtkExpander *expander, FocusSite site, GtkDirectionType direction) { gboolean ltr; ltr = gtk_widget_get_direction (GTK_WIDGET (expander)) != GTK_TEXT_DIR_RTL; switch (site) { case FOCUS_NONE: switch (direction) { case GTK_DIR_TAB_BACKWARD: case GTK_DIR_LEFT: case GTK_DIR_UP: return FOCUS_CHILD; case GTK_DIR_TAB_FORWARD: case GTK_DIR_DOWN: case GTK_DIR_RIGHT: return FOCUS_WIDGET; } case FOCUS_WIDGET: switch (direction) { case GTK_DIR_TAB_BACKWARD: case GTK_DIR_UP: return FOCUS_NONE; case GTK_DIR_LEFT: return ltr ? FOCUS_NONE : FOCUS_LABEL; case GTK_DIR_TAB_FORWARD: case GTK_DIR_DOWN: return FOCUS_LABEL; case GTK_DIR_RIGHT: return ltr ? FOCUS_LABEL : FOCUS_NONE; break; } case FOCUS_LABEL: switch (direction) { case GTK_DIR_TAB_BACKWARD: case GTK_DIR_UP: return FOCUS_WIDGET; case GTK_DIR_LEFT: return ltr ? FOCUS_WIDGET : FOCUS_CHILD; case GTK_DIR_TAB_FORWARD: case GTK_DIR_DOWN: return FOCUS_CHILD; case GTK_DIR_RIGHT: return ltr ? FOCUS_CHILD : FOCUS_WIDGET; break; } case FOCUS_CHILD: switch (direction) { case GTK_DIR_TAB_BACKWARD: case GTK_DIR_LEFT: case GTK_DIR_UP: return FOCUS_LABEL; case GTK_DIR_TAB_FORWARD: case GTK_DIR_DOWN: case GTK_DIR_RIGHT: return FOCUS_NONE; } } g_assert_not_reached (); return FOCUS_NONE; } static gboolean gtk_expander_focus (GtkWidget *widget, GtkDirectionType direction) { GtkExpander *expander = GTK_EXPANDER (widget); if (!focus_current_site (expander, direction)) { GtkWidget *old_focus_child; gboolean widget_is_focus; FocusSite site = FOCUS_NONE; widget_is_focus = gtk_widget_is_focus (widget); old_focus_child = GTK_CONTAINER (widget)->focus_child; if (old_focus_child && old_focus_child == expander->priv->label_widget) site = FOCUS_LABEL; else if (old_focus_child) site = FOCUS_CHILD; else if (widget_is_focus) site = FOCUS_WIDGET; while ((site = get_next_site (expander, site, direction)) != FOCUS_NONE) { if (focus_in_site (expander, site, direction)) return TRUE; } return FALSE; } return TRUE; } static void gtk_expander_add (GtkContainer *container, GtkWidget *widget) { GTK_CONTAINER_CLASS (parent_class)->add (container, widget); gtk_widget_set_child_visible (widget, GTK_EXPANDER (container)->priv->expanded); gtk_widget_queue_resize (GTK_WIDGET (container)); } static void gtk_expander_remove (GtkContainer *container, GtkWidget *widget) { GtkExpander *expander = GTK_EXPANDER (container); if (GTK_EXPANDER (expander)->priv->label_widget == widget) gtk_expander_set_label_widget (expander, NULL); else GTK_CONTAINER_CLASS (parent_class)->remove (container, widget); } static void gtk_expander_forall (GtkContainer *container, gboolean include_internals, GtkCallback callback, gpointer callback_data) { GtkBin *bin = GTK_BIN (container); GtkExpanderPrivate *priv = GTK_EXPANDER (container)->priv; if (bin->child) (* callback) (bin->child, callback_data); if (priv->label_widget) (* callback) (priv->label_widget, callback_data); } static void gtk_expander_activate (GtkExpander *expander) { gtk_expander_set_expanded (expander, !expander->priv->expanded); } /** * gtk_expander_new: * @label: the text of the label * * Creates a new expander using @label as the text of the label. * * Return value: a new #GtkExpander widget. * * Since: 2.4 **/ GtkWidget * gtk_expander_new (const gchar *label) { return g_object_new (GTK_TYPE_EXPANDER, "label", label, NULL); } /** * gtk_expander_new_with_mnemonic: * @label: the text of the label with an underscore in front of the * mnemonic character * * Creates a new expander using @label as the text of the label. * If characters in @label are preceded by an underscore, they are underlined. * If you need a literal underscore character in a label, use '__' (two * underscores). The first underlined character represents a keyboard * accelerator called a mnemonic. * Pressing Alt and that key activates the button. * * Return value: a new #GtkExpander widget. * * Since: 2.4 **/ GtkWidget * gtk_expander_new_with_mnemonic (const gchar *label) { return g_object_new (GTK_TYPE_EXPANDER, "label", label, "use_underline", TRUE, NULL); } static gboolean gtk_expander_animation_timeout (GtkExpander *expander) { GtkExpanderPrivate *priv = expander->priv; GdkRectangle area; gboolean finish = FALSE; GDK_THREADS_ENTER(); if (GTK_WIDGET_REALIZED (expander)) { get_expander_bounds (expander, &area); gdk_window_invalidate_rect (GTK_WIDGET (expander)->window, &area, TRUE); } if (priv->expanded) { if (priv->expander_style == GTK_EXPANDER_COLLAPSED) { priv->expander_style = GTK_EXPANDER_SEMI_EXPANDED; } else { priv->expander_style = GTK_EXPANDER_EXPANDED; finish = TRUE; } } else { if (priv->expander_style == GTK_EXPANDER_EXPANDED) { priv->expander_style = GTK_EXPANDER_SEMI_COLLAPSED; } else { priv->expander_style = GTK_EXPANDER_COLLAPSED; finish = TRUE; } } if (finish) { priv->animation_timeout = 0; if (GTK_BIN (expander)->child) gtk_widget_set_child_visible (GTK_BIN (expander)->child, priv->expanded); gtk_widget_queue_resize (GTK_WIDGET (expander)); } GDK_THREADS_LEAVE(); return !finish; } static void gtk_expander_start_animation (GtkExpander *expander) { GtkExpanderPrivate *priv = expander->priv; if (priv->animation_timeout) g_source_remove (priv->animation_timeout); priv->animation_timeout = g_timeout_add (50, (GSourceFunc) gtk_expander_animation_timeout, expander); } /** * gtk_expander_set_expanded: * @expander: a #GtkExpander * @expanded: whether the child widget is revealed * * Sets the state of the expander. Set to %TRUE, if you want * the child widget to be revealed, and %FALSE if you want the * child widget to be hidden. * * Since: 2.4 **/ void gtk_expander_set_expanded (GtkExpander *expander, gboolean expanded) { GtkExpanderPrivate *priv; g_return_if_fail (GTK_IS_EXPANDER (expander)); priv = expander->priv; expanded = expanded != FALSE; if (priv->expanded != expanded) { priv->expanded = expanded; if (GTK_WIDGET_REALIZED (expander)) { gtk_expander_start_animation (expander); } else { priv->expander_style = expanded ? GTK_EXPANDER_EXPANDED : GTK_EXPANDER_COLLAPSED; if (GTK_BIN (expander)->child) { gtk_widget_set_child_visible (GTK_BIN (expander)->child, priv->expanded); gtk_widget_queue_resize (GTK_WIDGET (expander)); } } g_object_notify (G_OBJECT (expander), "expanded"); } } /** * gtk_expander_get_expanded: * @expander:a #GtkExpander * * Queries a #GtkExpander and returns its current state. Returns %TRUE * if the child widget is revealed. * * See gtk_expander_set_expanded(). * * Return value: the current state of the expander. * * Since: 2.4 **/ gboolean gtk_expander_get_expanded (GtkExpander *expander) { g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE); return expander->priv->expanded; } /** * gtk_expander_set_spacing: * @expander: a #GtkExpander * @spacing: distance between the expander and child in pixels. * * Sets the spacing field of @expander, which is the number of pixels to * place between expander and the child. * * Since: 2.4 **/ void gtk_expander_set_spacing (GtkExpander *expander, gint spacing) { g_return_if_fail (GTK_IS_EXPANDER (expander)); g_return_if_fail (spacing >= 0); if (expander->priv->spacing != spacing) { expander->priv->spacing = spacing; gtk_widget_queue_resize (GTK_WIDGET (expander)); g_object_notify (G_OBJECT (expander), "spacing"); } } /** * gtk_expander_get_spacing: * @expander: a #GtkExpander * * Gets the value set by gtk_expander_set_spacing(). * * Return value: spacing between the expander and child. * * Since: 2.4 **/ gint gtk_expander_get_spacing (GtkExpander *expander) { g_return_val_if_fail (GTK_IS_EXPANDER (expander), 0); return expander->priv->spacing; } /** * gtk_expander_set_label: * @expander: a #GtkExpander * @label: a string * * Sets the text of the label of the expander to @label. * * This will also clear any previously set labels. * * Since: 2.4 **/ void gtk_expander_set_label (GtkExpander *expander, const gchar *label) { g_return_if_fail (GTK_IS_EXPANDER (expander)); if (!label) { gtk_expander_set_label_widget (expander, NULL); } else { GtkWidget *child; child = gtk_label_new (label); gtk_label_set_use_underline (GTK_LABEL (child), expander->priv->use_underline); gtk_label_set_use_markup (GTK_LABEL (child), expander->priv->use_markup); gtk_widget_show (child); gtk_expander_set_label_widget (expander, child); } g_object_notify (G_OBJECT (expander), "label"); } /** * gtk_expander_get_label: * @expander: a #GtkExpander * * Fetches the text from the label of the expander, as set by * gtk_expander_set_label(). If the label text has not * been set the return value will be %NULL. This will be the * case if you create an empty button with gtk_button_new() to * use as a container. * * Return value: The text of the label widget. This string is owned * by the widget and must not be modified or freed. * * Since: 2.4 **/ G_CONST_RETURN char * gtk_expander_get_label (GtkExpander *expander) { GtkExpanderPrivate *priv; g_return_val_if_fail (GTK_IS_EXPANDER (expander), NULL); priv = expander->priv; if (priv->label_widget && GTK_IS_LABEL (priv->label_widget)) return gtk_label_get_text (GTK_LABEL (priv->label_widget)); else return NULL; } /** * gtk_expander_set_use_underline: * @expander: a #GtkExpander * @use_underline: %TRUE if underlines in the text indicate mnemonics * * If true, an underline in the text of the expander label indicates * the next character should be used for the mnemonic accelerator key. * * Since: 2.4 **/ void gtk_expander_set_use_underline (GtkExpander *expander, gboolean use_underline) { GtkExpanderPrivate *priv; g_return_if_fail (GTK_IS_EXPANDER (expander)); priv = expander->priv; use_underline = use_underline != FALSE; if (priv->use_underline != use_underline) { priv->use_underline = use_underline; if (priv->label_widget && GTK_IS_LABEL (priv->label_widget)) gtk_label_set_use_underline (GTK_LABEL (priv->label_widget), use_underline); g_object_notify (G_OBJECT (expander), "use_underline"); } } /** * gtk_expander_get_use_underline: * @expander: a #GtkExpander * * Returns whether an embedded underline in the expander label indicates a * mnemonic. See gtk_expander_set_use_underline(). * * Return value: %TRUE if an embedded underline in the expander label * indicates the mnemonic accelerator keys. * * Since: 2.4 **/ gboolean gtk_expander_get_use_underline (GtkExpander *expander) { g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE); return expander->priv->use_underline; } /** * gtk_expander_set_use_markup: * @expander: a #GtkExpander * @use_markup: %TRUE if the label's text should be parsed for markup * * Sets whether the text of the label contains markup in Pango's text markup * language. See gtk_label_set_markup(). * * Since: 2.4 **/ void gtk_expander_set_use_markup (GtkExpander *expander, gboolean use_markup) { GtkExpanderPrivate *priv; g_return_if_fail (GTK_IS_EXPANDER (expander)); priv = expander->priv; use_markup = use_markup != FALSE; if (priv->use_markup != use_markup) { priv->use_markup = use_markup; if (priv->label_widget && GTK_IS_LABEL (priv->label_widget)) gtk_label_set_use_markup (GTK_LABEL (priv->label_widget), use_markup); g_object_notify (G_OBJECT (expander), "use_markup"); } } /** * gtk_expander_get_use_markup: * @expander: a #GtkExpander * * Returns whether the label's text is interpreted as marked up with * the Pango text markup * language. See gtk_expander_set_use_markup (). * * Return value: %TRUE if the label's text will be parsed for markup * * Since: 2.4 **/ gboolean gtk_expander_get_use_markup (GtkExpander *expander) { g_return_val_if_fail (GTK_IS_EXPANDER (expander), FALSE); return expander->priv->use_markup; } /** * gtk_expander_set_label_widget: * @expander: a #GtkExpander * @label_widget: the new label widget * * Set the label widget for the expander. This is the widget * that will appear embedded alongside the expander arrow. * * Since: 2.4 **/ void gtk_expander_set_label_widget (GtkExpander *expander, GtkWidget *label_widget) { GtkExpanderPrivate *priv; g_return_if_fail (GTK_IS_EXPANDER (expander)); g_return_if_fail (label_widget == NULL || GTK_IS_WIDGET (label_widget)); g_return_if_fail (label_widget == NULL || label_widget->parent == NULL); priv = expander->priv; if (priv->label_widget == label_widget) return; if (priv->label_widget) { gtk_widget_set_state (priv->label_widget, GTK_STATE_NORMAL); gtk_widget_unparent (priv->label_widget); } priv->label_widget = label_widget; if (label_widget) { priv->label_widget = label_widget; gtk_widget_set_parent (label_widget, GTK_WIDGET (expander)); if (priv->prelight) gtk_widget_set_state (label_widget, GTK_STATE_PRELIGHT); } if (GTK_WIDGET_VISIBLE (expander)) gtk_widget_queue_resize (GTK_WIDGET (expander)); g_object_freeze_notify (G_OBJECT (expander)); g_object_notify (G_OBJECT (expander), "label_widget"); g_object_notify (G_OBJECT (expander), "label"); g_object_thaw_notify (G_OBJECT (expander)); } /** * gtk_expander_get_label_widget: * @expander: a #GtkExpander * * Retrieves the label widget for the frame. See * gtk_expander_set_label_widget(). * * Return value: the label widget, or %NULL if there is none. * * Since: 2.4 **/ GtkWidget * gtk_expander_get_label_widget (GtkExpander *expander) { g_return_val_if_fail (GTK_IS_EXPANDER (expander), NULL); return expander->priv->label_widget; }