/* GTK - The GIMP Toolkit * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald * Copyright (C) 1998 Elliot Lee * * 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. */ /* * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS * file for a list of people on the GTK+ Team. See the ChangeLog * files for a list of changes. These files are distributed with * GTK+ at ftp://ftp.gtk.org/pub/gtk/. */ #include "config.h" #include #include "gtkhandlebox.h" #include "gtkinvisible.h" #include "gtkmain.h" #include "gtkmarshalers.h" #include "gtkwindow.h" #include "gtkprivate.h" #include "gtkintl.h" struct _GtkHandleBoxPrivate { /* Properties */ GtkPositionType handle_position; GtkPositionType snap_edge; GtkShadowType shadow_type; gboolean child_detached; /* Properties */ GtkAllocation attach_allocation; GtkAllocation float_allocation; GdkDevice *grab_device; GdkWindow *bin_window; /* parent window for children */ GdkWindow *float_window; /* Variables used during a drag */ gint orig_x; gint orig_y; guint float_window_mapped : 1; guint in_drag : 1; guint shrink_on_detach : 1; }; enum { PROP_0, PROP_SHADOW_TYPE, PROP_HANDLE_POSITION, PROP_SNAP_EDGE, PROP_SNAP_EDGE_SET, PROP_CHILD_DETACHED }; #define DRAG_HANDLE_SIZE 10 #define CHILDLESS_SIZE 25 #define GHOST_HEIGHT 3 #define TOLERANCE 5 enum { SIGNAL_CHILD_ATTACHED, SIGNAL_CHILD_DETACHED, SIGNAL_LAST }; /* The algorithm for docking and redocking implemented here * has a couple of nice properties: * * 1) During a single drag, docking always occurs at the * the same cursor position. This means that the users * motions are reversible, and that you won't * undock/dock oscillations. * * 2) Docking generally occurs at user-visible features. * The user, once they figure out to redock, will * have useful information about doing it again in * the future. * * Please try to preserve these properties if you * change the algorithm. (And the current algorithm * is far from ideal). Briefly, the current algorithm * for deciding whether the handlebox is docked or not: * * 1) The decision is done by comparing two rectangles - the * allocation if the widget at the start of the drag, * and the boundary of hb->bin_window at the start of * of the drag offset by the distance that the cursor * has moved. * * 2) These rectangles must have one edge, the "snap_edge" * of the handlebox, aligned within TOLERANCE. * * 3) On the other dimension, the extents of one rectangle * must be contained in the extents of the other, * extended by tolerance. That is, either we can have: * * <-TOLERANCE-|--------bin_window--------------|-TOLERANCE-> * <--------float_window--------------------> * * or we can have: * * <-TOLERANCE-|------float_window--------------|-TOLERANCE-> * <--------bin_window--------------------> */ static void gtk_handle_box_set_property (GObject *object, guint param_id, const GValue *value, GParamSpec *pspec); static void gtk_handle_box_get_property (GObject *object, guint param_id, GValue *value, GParamSpec *pspec); static void gtk_handle_box_map (GtkWidget *widget); static void gtk_handle_box_unmap (GtkWidget *widget); static void gtk_handle_box_realize (GtkWidget *widget); static void gtk_handle_box_unrealize (GtkWidget *widget); static void gtk_handle_box_style_set (GtkWidget *widget, GtkStyle *previous_style); static void gtk_handle_box_size_request (GtkWidget *widget, GtkRequisition *requisition); static void gtk_handle_box_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural); static void gtk_handle_box_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural); static void gtk_handle_box_size_allocate (GtkWidget *widget, GtkAllocation *real_allocation); static void gtk_handle_box_add (GtkContainer *container, GtkWidget *widget); static void gtk_handle_box_remove (GtkContainer *container, GtkWidget *widget); static gboolean gtk_handle_box_draw (GtkWidget *widget, cairo_t *cr); static gboolean gtk_handle_box_button_press (GtkWidget *widget, GdkEventButton *event); static gboolean gtk_handle_box_motion (GtkWidget *widget, GdkEventMotion *event); static gboolean gtk_handle_box_delete_event (GtkWidget *widget, GdkEventAny *event); static void gtk_handle_box_reattach (GtkHandleBox *hb); static void gtk_handle_box_end_drag (GtkHandleBox *hb, guint32 time); static guint handle_box_signals[SIGNAL_LAST] = { 0 }; G_DEFINE_TYPE (GtkHandleBox, gtk_handle_box, GTK_TYPE_BIN) static void gtk_handle_box_class_init (GtkHandleBoxClass *class) { GObjectClass *gobject_class; GtkWidgetClass *widget_class; GtkContainerClass *container_class; gobject_class = (GObjectClass *) class; widget_class = (GtkWidgetClass *) class; container_class = (GtkContainerClass *) class; gobject_class->set_property = gtk_handle_box_set_property; gobject_class->get_property = gtk_handle_box_get_property; g_object_class_install_property (gobject_class, PROP_SHADOW_TYPE, g_param_spec_enum ("shadow-type", P_("Shadow type"), P_("Appearance of the shadow that surrounds the container"), GTK_TYPE_SHADOW_TYPE, GTK_SHADOW_OUT, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_HANDLE_POSITION, g_param_spec_enum ("handle-position", P_("Handle position"), P_("Position of the handle relative to the child widget"), GTK_TYPE_POSITION_TYPE, GTK_POS_LEFT, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SNAP_EDGE, g_param_spec_enum ("snap-edge", P_("Snap edge"), P_("Side of the handlebox that's lined up with the docking point to dock the handlebox"), GTK_TYPE_POSITION_TYPE, GTK_POS_TOP, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_SNAP_EDGE_SET, g_param_spec_boolean ("snap-edge-set", P_("Snap edge set"), P_("Whether to use the value from the snap_edge property or a value derived from handle_position"), FALSE, GTK_PARAM_READWRITE)); g_object_class_install_property (gobject_class, PROP_CHILD_DETACHED, g_param_spec_boolean ("child-detached", P_("Child Detached"), P_("A boolean value indicating whether the handlebox's child is attached or detached."), FALSE, GTK_PARAM_READABLE)); widget_class->map = gtk_handle_box_map; widget_class->unmap = gtk_handle_box_unmap; widget_class->realize = gtk_handle_box_realize; widget_class->unrealize = gtk_handle_box_unrealize; widget_class->style_set = gtk_handle_box_style_set; widget_class->get_preferred_width = gtk_handle_box_get_preferred_width; widget_class->get_preferred_height = gtk_handle_box_get_preferred_height; widget_class->size_allocate = gtk_handle_box_size_allocate; widget_class->draw = gtk_handle_box_draw; widget_class->button_press_event = gtk_handle_box_button_press; widget_class->delete_event = gtk_handle_box_delete_event; container_class->add = gtk_handle_box_add; container_class->remove = gtk_handle_box_remove; class->child_attached = NULL; class->child_detached = NULL; handle_box_signals[SIGNAL_CHILD_ATTACHED] = g_signal_new (I_("child-attached"), G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkHandleBoxClass, child_attached), NULL, NULL, _gtk_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_WIDGET); handle_box_signals[SIGNAL_CHILD_DETACHED] = g_signal_new (I_("child-detached"), G_OBJECT_CLASS_TYPE (gobject_class), G_SIGNAL_RUN_FIRST, G_STRUCT_OFFSET (GtkHandleBoxClass, child_detached), NULL, NULL, _gtk_marshal_VOID__OBJECT, G_TYPE_NONE, 1, GTK_TYPE_WIDGET); g_type_class_add_private (gobject_class, sizeof (GtkHandleBoxPrivate)); } static void gtk_handle_box_init (GtkHandleBox *handle_box) { GtkHandleBoxPrivate *priv; handle_box->priv = G_TYPE_INSTANCE_GET_PRIVATE (handle_box, GTK_TYPE_HANDLE_BOX, GtkHandleBoxPrivate); priv = handle_box->priv; gtk_widget_set_has_window (GTK_WIDGET (handle_box), TRUE); priv->bin_window = NULL; priv->float_window = NULL; priv->shadow_type = GTK_SHADOW_OUT; priv->handle_position = GTK_POS_LEFT; priv->float_window_mapped = FALSE; priv->child_detached = FALSE; priv->in_drag = FALSE; priv->shrink_on_detach = TRUE; priv->snap_edge = -1; } static void gtk_handle_box_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { GtkHandleBox *handle_box = GTK_HANDLE_BOX (object); switch (prop_id) { case PROP_SHADOW_TYPE: gtk_handle_box_set_shadow_type (handle_box, g_value_get_enum (value)); break; case PROP_HANDLE_POSITION: gtk_handle_box_set_handle_position (handle_box, g_value_get_enum (value)); break; case PROP_SNAP_EDGE: gtk_handle_box_set_snap_edge (handle_box, g_value_get_enum (value)); break; case PROP_SNAP_EDGE_SET: if (!g_value_get_boolean (value)) gtk_handle_box_set_snap_edge (handle_box, (GtkPositionType)-1); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void gtk_handle_box_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GtkHandleBox *handle_box = GTK_HANDLE_BOX (object); GtkHandleBoxPrivate *priv = handle_box->priv; switch (prop_id) { case PROP_SHADOW_TYPE: g_value_set_enum (value, priv->shadow_type); break; case PROP_HANDLE_POSITION: g_value_set_enum (value, priv->handle_position); break; case PROP_SNAP_EDGE: g_value_set_enum (value, (priv->snap_edge == -1 ? GTK_POS_TOP : priv->snap_edge)); break; case PROP_SNAP_EDGE_SET: g_value_set_boolean (value, priv->snap_edge != -1); break; case PROP_CHILD_DETACHED: g_value_set_boolean (value, priv->child_detached); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } GtkWidget* gtk_handle_box_new (void) { return g_object_new (GTK_TYPE_HANDLE_BOX, NULL); } static void gtk_handle_box_map (GtkWidget *widget) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; GtkBin *bin = GTK_BIN (widget); GtkWidget *child; gtk_widget_set_mapped (widget, TRUE); child = gtk_bin_get_child (bin); if (child != NULL && gtk_widget_get_visible (child) && !gtk_widget_get_mapped (child)) gtk_widget_map (child); if (priv->child_detached && !priv->float_window_mapped) { gdk_window_show (priv->float_window); priv->float_window_mapped = TRUE; } gdk_window_show (priv->bin_window); gdk_window_show (gtk_widget_get_window (widget)); } static void gtk_handle_box_unmap (GtkWidget *widget) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; gtk_widget_set_mapped (widget, FALSE); gdk_window_hide (gtk_widget_get_window (widget)); if (priv->float_window_mapped) { gdk_window_hide (priv->float_window); priv->float_window_mapped = FALSE; } GTK_WIDGET_CLASS (gtk_handle_box_parent_class)->unmap (widget); } static void gtk_handle_box_realize (GtkWidget *widget) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; GtkAllocation allocation; GtkRequisition requisition; GtkStateType state; GtkStyle *style; GtkWidget *child; GdkWindow *window; GdkWindowAttr attributes; gint attributes_mask; gtk_widget_set_realized (widget, TRUE); gtk_widget_get_allocation (widget, &allocation); attributes.x = allocation.x; attributes.y = allocation.y; attributes.width = allocation.width; attributes.height = allocation.height; attributes.window_type = GDK_WINDOW_CHILD; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.event_mask = (gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL; window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask); gtk_widget_set_window (widget, window); gdk_window_set_user_data (window, widget); attributes.x = 0; attributes.y = 0; attributes.width = allocation.width; attributes.height = allocation.height; attributes.window_type = GDK_WINDOW_CHILD; attributes.event_mask = (gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK | GDK_BUTTON1_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK); attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL; priv->bin_window = gdk_window_new (window, &attributes, attributes_mask); gdk_window_set_user_data (priv->bin_window, widget); child = gtk_bin_get_child (GTK_BIN (hb)); if (child) gtk_widget_set_parent_window (child, priv->bin_window); gtk_widget_get_preferred_size (widget, &requisition, NULL); attributes.x = 0; attributes.y = 0; attributes.width = requisition.width; attributes.height = requisition.height; attributes.window_type = GDK_WINDOW_TOPLEVEL; attributes.wclass = GDK_INPUT_OUTPUT; attributes.visual = gtk_widget_get_visual (widget); attributes.event_mask = (gtk_widget_get_events (widget) | GDK_KEY_PRESS_MASK | GDK_ENTER_NOTIFY_MASK | GDK_LEAVE_NOTIFY_MASK | GDK_FOCUS_CHANGE_MASK | GDK_STRUCTURE_MASK); attributes.type_hint = GDK_WINDOW_TYPE_HINT_TOOLBAR; attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_TYPE_HINT; priv->float_window = gdk_window_new (gtk_widget_get_root_window (widget), &attributes, attributes_mask); gdk_window_set_user_data (priv->float_window, widget); gdk_window_set_decorations (priv->float_window, 0); gdk_window_set_type_hint (priv->float_window, GDK_WINDOW_TYPE_HINT_TOOLBAR); gtk_widget_style_attach (widget); style = gtk_widget_get_style (widget); state = gtk_widget_get_state (widget); gtk_style_set_background (style, window, state); gtk_style_set_background (style, priv->bin_window, state); gtk_style_set_background (style, priv->float_window, state); } static void gtk_handle_box_unrealize (GtkWidget *widget) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; gdk_window_set_user_data (priv->bin_window, NULL); gdk_window_destroy (priv->bin_window); priv->bin_window = NULL; gdk_window_set_user_data (priv->float_window, NULL); gdk_window_destroy (priv->float_window); priv->float_window = NULL; GTK_WIDGET_CLASS (gtk_handle_box_parent_class)->unrealize (widget); } static void gtk_handle_box_style_set (GtkWidget *widget, GtkStyle *previous_style) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; if (gtk_widget_get_realized (widget) && gtk_widget_get_has_window (widget)) { GtkStateType state; GtkStyle *style; style = gtk_widget_get_style (widget); state = gtk_widget_get_state (widget); gtk_style_set_background (style, gtk_widget_get_window (widget), state); gtk_style_set_background (style, priv->bin_window, state); gtk_style_set_background (style, priv->float_window, state); } } static int effective_handle_position (GtkHandleBox *hb) { GtkHandleBoxPrivate *priv = hb->priv; int handle_position; if (gtk_widget_get_direction (GTK_WIDGET (hb)) == GTK_TEXT_DIR_LTR) handle_position = priv->handle_position; else { switch (priv->handle_position) { case GTK_POS_LEFT: handle_position = GTK_POS_RIGHT; break; case GTK_POS_RIGHT: handle_position = GTK_POS_LEFT; break; default: handle_position = priv->handle_position; break; } } return handle_position; } static void gtk_handle_box_size_request (GtkWidget *widget, GtkRequisition *requisition) { GtkBin *bin = GTK_BIN (widget); GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; GtkRequisition child_requisition; GtkWidget *child; gint handle_position; handle_position = effective_handle_position (hb); if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) { requisition->width = DRAG_HANDLE_SIZE; requisition->height = 0; } else { requisition->width = 0; requisition->height = DRAG_HANDLE_SIZE; } child = gtk_bin_get_child (bin); /* if our child is not visible, we still request its size, since we * won't have any useful hint for our size otherwise. */ if (child) { gtk_widget_get_preferred_size (child, &child_requisition, NULL); } else { child_requisition.width = 0; child_requisition.height = 0; } if (priv->child_detached) { /* FIXME: This doesn't work currently */ if (!priv->shrink_on_detach) { if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) requisition->height += child_requisition.height; else requisition->width += child_requisition.width; } else { if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) requisition->height += gtk_widget_get_style (widget)->ythickness; else requisition->width += gtk_widget_get_style (widget)->xthickness; } } else { guint border_width; border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); requisition->width += border_width * 2; requisition->height += border_width * 2; if (child) { requisition->width += child_requisition.width; requisition->height += child_requisition.height; } else { requisition->width += CHILDLESS_SIZE; requisition->height += CHILDLESS_SIZE; } } } static void gtk_handle_box_get_preferred_width (GtkWidget *widget, gint *minimum, gint *natural) { GtkRequisition requisition; gtk_handle_box_size_request (widget, &requisition); *minimum = *natural = requisition.width; } static void gtk_handle_box_get_preferred_height (GtkWidget *widget, gint *minimum, gint *natural) { GtkRequisition requisition; gtk_handle_box_size_request (widget, &requisition); *minimum = *natural = requisition.height; } static void gtk_handle_box_size_allocate (GtkWidget *widget, GtkAllocation *allocation) { GtkBin *bin = GTK_BIN (widget); GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; GtkRequisition child_requisition; GtkWidget *child; gint handle_position; handle_position = effective_handle_position (hb); child = gtk_bin_get_child (bin); if (child) { gtk_widget_get_preferred_size (child, &child_requisition, NULL); } else { child_requisition.width = 0; child_requisition.height = 0; } gtk_widget_set_allocation (widget, allocation); if (gtk_widget_get_realized (widget)) gdk_window_move_resize (gtk_widget_get_window (widget), allocation->x, allocation->y, allocation->width, allocation->height); if (child != NULL && gtk_widget_get_visible (child)) { GtkAllocation child_allocation; guint border_width; border_width = gtk_container_get_border_width (GTK_CONTAINER (widget)); child_allocation.x = border_width; child_allocation.y = border_width; if (handle_position == GTK_POS_LEFT) child_allocation.x += DRAG_HANDLE_SIZE; else if (handle_position == GTK_POS_TOP) child_allocation.y += DRAG_HANDLE_SIZE; if (priv->child_detached) { guint float_width; guint float_height; child_allocation.width = child_requisition.width; child_allocation.height = child_requisition.height; float_width = child_allocation.width + 2 * border_width; float_height = child_allocation.height + 2 * border_width; if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) float_width += DRAG_HANDLE_SIZE; else float_height += DRAG_HANDLE_SIZE; if (gtk_widget_get_realized (widget)) { gdk_window_resize (priv->float_window, float_width, float_height); gdk_window_move_resize (priv->bin_window, 0, 0, float_width, float_height); } } else { child_allocation.width = MAX (1, (gint) allocation->width - 2 * border_width); child_allocation.height = MAX (1, (gint) allocation->height - 2 * border_width); if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) child_allocation.width -= DRAG_HANDLE_SIZE; else child_allocation.height -= DRAG_HANDLE_SIZE; if (gtk_widget_get_realized (widget)) gdk_window_move_resize (priv->bin_window, 0, 0, allocation->width, allocation->height); } gtk_widget_size_allocate (child, &child_allocation); } } static void gtk_handle_box_draw_ghost (GtkHandleBox *hb, cairo_t *cr) { GtkWidget *widget = GTK_WIDGET (hb); GtkStateType state; GtkStyle *style; GdkWindow *window; guint x; guint y; guint width; guint height; gint allocation_width; gint allocation_height; gint handle_position; handle_position = effective_handle_position (hb); allocation_width = gtk_widget_get_allocated_width (widget); allocation_height = gtk_widget_get_allocated_height (widget); if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) { x = handle_position == GTK_POS_LEFT ? 0 : allocation_width - DRAG_HANDLE_SIZE; y = 0; width = DRAG_HANDLE_SIZE; height = allocation_height; } else { x = 0; y = handle_position == GTK_POS_TOP ? 0 : allocation_height - DRAG_HANDLE_SIZE; width = allocation_width; height = DRAG_HANDLE_SIZE; } style = gtk_widget_get_style (widget); window = gtk_widget_get_window (widget); state = gtk_widget_get_state (widget); gtk_paint_shadow (style, cr, state, GTK_SHADOW_ETCHED_IN, widget, "handle", x, y, width, height); if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) gtk_paint_hline (style, cr, state, widget, "handlebox", handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0, handle_position == GTK_POS_LEFT ? allocation_width : allocation_width - DRAG_HANDLE_SIZE, allocation_height / 2); else gtk_paint_vline (style, cr, state, widget, "handlebox", handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0, handle_position == GTK_POS_TOP ? allocation_height : allocation_height - DRAG_HANDLE_SIZE, allocation_width / 2); } void gtk_handle_box_set_shadow_type (GtkHandleBox *handle_box, GtkShadowType type) { GtkHandleBoxPrivate *priv; g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box)); priv = handle_box->priv; if ((GtkShadowType) priv->shadow_type != type) { priv->shadow_type = type; g_object_notify (G_OBJECT (handle_box), "shadow-type"); gtk_widget_queue_resize (GTK_WIDGET (handle_box)); } } /** * gtk_handle_box_get_shadow_type: * @handle_box: a #GtkHandleBox * * Gets the type of shadow drawn around the handle box. See * gtk_handle_box_set_shadow_type(). * * Return value: the type of shadow currently drawn around the handle box. **/ GtkShadowType gtk_handle_box_get_shadow_type (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), GTK_SHADOW_ETCHED_OUT); return handle_box->priv->shadow_type; } void gtk_handle_box_set_handle_position (GtkHandleBox *handle_box, GtkPositionType position) { GtkHandleBoxPrivate *priv; g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box)); priv = handle_box->priv; if ((GtkPositionType) priv->handle_position != position) { priv->handle_position = position; g_object_notify (G_OBJECT (handle_box), "handle-position"); gtk_widget_queue_resize (GTK_WIDGET (handle_box)); } } /** * gtk_handle_box_get_handle_position: * @handle_box: a #GtkHandleBox * * Gets the handle position of the handle box. See * gtk_handle_box_set_handle_position(). * * Return value: the current handle position. **/ GtkPositionType gtk_handle_box_get_handle_position (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), GTK_POS_LEFT); return handle_box->priv->handle_position; } void gtk_handle_box_set_snap_edge (GtkHandleBox *handle_box, GtkPositionType edge) { GtkHandleBoxPrivate *priv; g_return_if_fail (GTK_IS_HANDLE_BOX (handle_box)); priv = handle_box->priv; if (priv->snap_edge != edge) { priv->snap_edge = edge; g_object_freeze_notify (G_OBJECT (handle_box)); g_object_notify (G_OBJECT (handle_box), "snap-edge"); g_object_notify (G_OBJECT (handle_box), "snap-edge-set"); g_object_thaw_notify (G_OBJECT (handle_box)); } } /** * gtk_handle_box_get_snap_edge: * @handle_box: a #GtkHandleBox * * Gets the edge used for determining reattachment of the handle box. See * gtk_handle_box_set_snap_edge(). * * Return value: the edge used for determining reattachment, or (GtkPositionType)-1 if this * is determined (as per default) from the handle position. **/ GtkPositionType gtk_handle_box_get_snap_edge (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), (GtkPositionType)-1); return handle_box->priv->snap_edge; } /** * gtk_handle_box_get_child_detached: * @handle_box: a #GtkHandleBox * * Whether the handlebox's child is currently detached. * * Return value: %TRUE if the child is currently detached, otherwise %FALSE * * Since: 2.14 **/ gboolean gtk_handle_box_get_child_detached (GtkHandleBox *handle_box) { g_return_val_if_fail (GTK_IS_HANDLE_BOX (handle_box), FALSE); return handle_box->priv->child_detached; } static void gtk_handle_box_paint (GtkWidget *widget, cairo_t *cr) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; GtkBin *bin = GTK_BIN (widget); GtkWidget *child; gint width, height; GdkRectangle rect; gint handle_position; GtkOrientation handle_orientation; handle_position = effective_handle_position (hb); width = gdk_window_get_width (priv->bin_window); height = gdk_window_get_height (priv->bin_window); gtk_paint_box (gtk_widget_get_style (widget), cr, gtk_widget_get_state (widget), priv->shadow_type, widget, "handlebox_bin", 0, 0, width, height); switch (handle_position) { case GTK_POS_LEFT: rect.x = 0; rect.y = 0; rect.width = DRAG_HANDLE_SIZE; rect.height = height; handle_orientation = GTK_ORIENTATION_VERTICAL; break; case GTK_POS_RIGHT: rect.x = width - DRAG_HANDLE_SIZE; rect.y = 0; rect.width = DRAG_HANDLE_SIZE; rect.height = height; handle_orientation = GTK_ORIENTATION_VERTICAL; break; case GTK_POS_TOP: rect.x = 0; rect.y = 0; rect.width = width; rect.height = DRAG_HANDLE_SIZE; handle_orientation = GTK_ORIENTATION_HORIZONTAL; break; case GTK_POS_BOTTOM: rect.x = 0; rect.y = height - DRAG_HANDLE_SIZE; rect.width = width; rect.height = DRAG_HANDLE_SIZE; handle_orientation = GTK_ORIENTATION_HORIZONTAL; break; default: g_assert_not_reached (); break; } gtk_paint_handle (gtk_widget_get_style (widget), cr, GTK_STATE_NORMAL, GTK_SHADOW_OUT, widget, "handlebox", rect.x, rect.y, rect.width, rect.height, handle_orientation); child = gtk_bin_get_child (bin); if (child != NULL && gtk_widget_get_visible (child)) GTK_WIDGET_CLASS (gtk_handle_box_parent_class)->draw (widget, cr); } static gboolean gtk_handle_box_draw (GtkWidget *widget, cairo_t *cr) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget))) { if (priv->child_detached) gtk_handle_box_draw_ghost (hb, cr); } else if (gtk_cairo_should_draw_window (cr, priv->bin_window)) gtk_handle_box_paint (widget, cr); return FALSE; } static GtkWidget * gtk_handle_box_get_invisible (void) { static GtkWidget *handle_box_invisible = NULL; if (!handle_box_invisible) { handle_box_invisible = gtk_invisible_new (); gtk_widget_show (handle_box_invisible); } return handle_box_invisible; } static gboolean gtk_handle_box_grab_event (GtkWidget *widget, GdkEvent *event, GtkHandleBox *hb) { GtkHandleBoxPrivate *priv = hb->priv; switch (event->type) { case GDK_BUTTON_RELEASE: if (priv->in_drag) /* sanity check */ { gtk_handle_box_end_drag (hb, event->button.time); return TRUE; } break; case GDK_MOTION_NOTIFY: return gtk_handle_box_motion (GTK_WIDGET (hb), (GdkEventMotion *)event); break; default: break; } return FALSE; } static gboolean gtk_handle_box_button_press (GtkWidget *widget, GdkEventButton *event) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; gboolean event_handled; GdkCursor *fleur; gint handle_position; handle_position = effective_handle_position (hb); event_handled = FALSE; if ((event->button == 1) && (event->type == GDK_BUTTON_PRESS || event->type == GDK_2BUTTON_PRESS)) { GtkWidget *child; gboolean in_handle; if (event->window != priv->bin_window) return FALSE; child = gtk_bin_get_child (GTK_BIN (hb)); if (child) { GtkAllocation child_allocation; guint border_width; gtk_widget_get_allocation (child, &child_allocation); border_width = gtk_container_get_border_width (GTK_CONTAINER (hb)); switch (handle_position) { case GTK_POS_LEFT: in_handle = event->x < DRAG_HANDLE_SIZE; break; case GTK_POS_TOP: in_handle = event->y < DRAG_HANDLE_SIZE; break; case GTK_POS_RIGHT: in_handle = event->x > 2 * border_width + child_allocation.width; break; case GTK_POS_BOTTOM: in_handle = event->y > 2 * border_width + child_allocation.height; break; default: in_handle = FALSE; break; } } else { in_handle = FALSE; event_handled = TRUE; } if (in_handle) { if (event->type == GDK_BUTTON_PRESS) /* Start a drag */ { GtkWidget *invisible = gtk_handle_box_get_invisible (); GdkWindow *window; gint root_x, root_y; gtk_invisible_set_screen (GTK_INVISIBLE (invisible), gtk_widget_get_screen (GTK_WIDGET (hb))); gdk_window_get_origin (priv->bin_window, &root_x, &root_y); priv->orig_x = event->x_root; priv->orig_y = event->y_root; priv->float_allocation.x = root_x - event->x_root; priv->float_allocation.y = root_y - event->y_root; priv->float_allocation.width = gdk_window_get_width (priv->bin_window); priv->float_allocation.height = gdk_window_get_height (priv->bin_window); window = gtk_widget_get_window (widget); if (gdk_window_is_viewable (window)) { gdk_window_get_origin (window, &root_x, &root_y); priv->attach_allocation.x = root_x; priv->attach_allocation.y = root_y; priv->attach_allocation.width = gdk_window_get_width (window); priv->attach_allocation.height = gdk_window_get_height (window); } else { priv->attach_allocation.x = -1; priv->attach_allocation.y = -1; priv->attach_allocation.width = 0; priv->attach_allocation.height = 0; } priv->in_drag = TRUE; priv->grab_device = event->device; fleur = gdk_cursor_new_for_display (gtk_widget_get_display (widget), GDK_FLEUR); if (gdk_device_grab (event->device, gtk_widget_get_window (invisible), GDK_OWNERSHIP_WINDOW, FALSE, (GDK_BUTTON1_MOTION_MASK | GDK_POINTER_MOTION_HINT_MASK | GDK_BUTTON_RELEASE_MASK), fleur, event->time) != GDK_GRAB_SUCCESS) { priv->in_drag = FALSE; priv->grab_device = NULL; } else { gtk_device_grab_add (invisible, priv->grab_device, TRUE); g_signal_connect (invisible, "event", G_CALLBACK (gtk_handle_box_grab_event), hb); } gdk_cursor_unref (fleur); event_handled = TRUE; } else if (priv->child_detached) /* Double click */ { gtk_handle_box_reattach (hb); } } } return event_handled; } static gboolean gtk_handle_box_motion (GtkWidget *widget, GdkEventMotion *event) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; GtkWidget *child; gint new_x, new_y; gint snap_edge; gboolean is_snapped = FALSE; gint handle_position; GdkGeometry geometry; GdkScreen *screen, *pointer_screen; if (!priv->in_drag) return FALSE; handle_position = effective_handle_position (hb); /* Calculate the attachment point on the float, if the float * were detached */ new_x = 0; new_y = 0; screen = gtk_widget_get_screen (widget); gdk_display_get_device_state (gdk_screen_get_display (screen), event->device, &pointer_screen, &new_x, &new_y, NULL); if (pointer_screen != screen) { new_x = priv->orig_x; new_y = priv->orig_y; } new_x += priv->float_allocation.x; new_y += priv->float_allocation.y; snap_edge = priv->snap_edge; if (snap_edge == -1) snap_edge = (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) ? GTK_POS_TOP : GTK_POS_LEFT; if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL) switch (snap_edge) { case GTK_POS_LEFT: snap_edge = GTK_POS_RIGHT; break; case GTK_POS_RIGHT: snap_edge = GTK_POS_LEFT; break; default: break; } /* First, check if the snapped edge is aligned */ switch (snap_edge) { case GTK_POS_TOP: is_snapped = abs (priv->attach_allocation.y - new_y) < TOLERANCE; break; case GTK_POS_BOTTOM: is_snapped = abs (priv->attach_allocation.y + (gint)priv->attach_allocation.height - new_y - (gint)priv->float_allocation.height) < TOLERANCE; break; case GTK_POS_LEFT: is_snapped = abs (priv->attach_allocation.x - new_x) < TOLERANCE; break; case GTK_POS_RIGHT: is_snapped = abs (priv->attach_allocation.x + (gint)priv->attach_allocation.width - new_x - (gint)priv->float_allocation.width) < TOLERANCE; break; } /* Next, check if coordinates in the other direction are sufficiently * aligned */ if (is_snapped) { gint float_pos1 = 0; /* Initialize to suppress warnings */ gint float_pos2 = 0; gint attach_pos1 = 0; gint attach_pos2 = 0; switch (snap_edge) { case GTK_POS_TOP: case GTK_POS_BOTTOM: attach_pos1 = priv->attach_allocation.x; attach_pos2 = priv->attach_allocation.x + priv->attach_allocation.width; float_pos1 = new_x; float_pos2 = new_x + priv->float_allocation.width; break; case GTK_POS_LEFT: case GTK_POS_RIGHT: attach_pos1 = priv->attach_allocation.y; attach_pos2 = priv->attach_allocation.y + priv->attach_allocation.height; float_pos1 = new_y; float_pos2 = new_y + priv->float_allocation.height; break; } is_snapped = ((attach_pos1 - TOLERANCE < float_pos1) && (attach_pos2 + TOLERANCE > float_pos2)) || ((float_pos1 - TOLERANCE < attach_pos1) && (float_pos2 + TOLERANCE > attach_pos2)); } child = gtk_bin_get_child (GTK_BIN (hb)); if (is_snapped) { if (priv->child_detached) { priv->child_detached = FALSE; gdk_window_hide (priv->float_window); gdk_window_reparent (priv->bin_window, gtk_widget_get_window (widget), 0, 0); priv->float_window_mapped = FALSE; g_signal_emit (hb, handle_box_signals[SIGNAL_CHILD_ATTACHED], 0, child); gtk_widget_queue_resize (widget); } } else { gint width, height; width = gdk_window_get_width (priv->float_window); height = gdk_window_get_height (priv->float_window); switch (handle_position) { case GTK_POS_LEFT: new_y += ((gint)priv->float_allocation.height - height) / 2; break; case GTK_POS_RIGHT: new_x += (gint)priv->float_allocation.width - width; new_y += ((gint)priv->float_allocation.height - height) / 2; break; case GTK_POS_TOP: new_x += ((gint)priv->float_allocation.width - width) / 2; break; case GTK_POS_BOTTOM: new_x += ((gint)priv->float_allocation.width - width) / 2; new_y += (gint)priv->float_allocation.height - height; break; } if (priv->child_detached) { gdk_window_move (priv->float_window, new_x, new_y); gdk_window_raise (priv->float_window); } else { guint border_width; GtkRequisition child_requisition; priv->child_detached = TRUE; if (child) { gtk_widget_get_preferred_size (child, &child_requisition, NULL); } else { child_requisition.width = 0; child_requisition.height = 0; } border_width = gtk_container_get_border_width (GTK_CONTAINER (hb)); width = child_requisition.width + 2 * border_width; height = child_requisition.height + 2 * border_width; if (handle_position == GTK_POS_LEFT || handle_position == GTK_POS_RIGHT) width += DRAG_HANDLE_SIZE; else height += DRAG_HANDLE_SIZE; gdk_window_move_resize (priv->float_window, new_x, new_y, width, height); gdk_window_reparent (priv->bin_window, priv->float_window, 0, 0); gdk_window_set_geometry_hints (priv->float_window, &geometry, GDK_HINT_POS); gdk_window_show (priv->float_window); priv->float_window_mapped = TRUE; #if 0 /* this extra move is necessary if we use decorations, or our * window manager insists on decorations. */ gdk_display_sync (gtk_widget_get_display (widget)); gdk_window_move (priv->float_window, new_x, new_y); gdk_display_sync (gtk_widget_get_display (widget)); #endif /* 0 */ g_signal_emit (hb, handle_box_signals[SIGNAL_CHILD_DETACHED], 0, child); gtk_widget_queue_resize (widget); } } return TRUE; } static void gtk_handle_box_add (GtkContainer *container, GtkWidget *widget) { GtkHandleBoxPrivate *priv = GTK_HANDLE_BOX (container)->priv; gtk_widget_set_parent_window (widget, priv->bin_window); GTK_CONTAINER_CLASS (gtk_handle_box_parent_class)->add (container, widget); } static void gtk_handle_box_remove (GtkContainer *container, GtkWidget *widget) { GTK_CONTAINER_CLASS (gtk_handle_box_parent_class)->remove (container, widget); gtk_handle_box_reattach (GTK_HANDLE_BOX (container)); } static gint gtk_handle_box_delete_event (GtkWidget *widget, GdkEventAny *event) { GtkHandleBox *hb = GTK_HANDLE_BOX (widget); GtkHandleBoxPrivate *priv = hb->priv; if (event->window == priv->float_window) { gtk_handle_box_reattach (hb); return TRUE; } return FALSE; } static void gtk_handle_box_reattach (GtkHandleBox *hb) { GtkHandleBoxPrivate *priv = hb->priv; GtkWidget *child; GtkWidget *widget = GTK_WIDGET (hb); if (priv->child_detached) { priv->child_detached = FALSE; if (gtk_widget_get_realized (widget)) { gdk_window_hide (priv->float_window); gdk_window_reparent (priv->bin_window, gtk_widget_get_window (widget), 0, 0); child = gtk_bin_get_child (GTK_BIN (hb)); if (child) g_signal_emit (hb, handle_box_signals[SIGNAL_CHILD_ATTACHED], 0, child); } priv->float_window_mapped = FALSE; } if (priv->in_drag) gtk_handle_box_end_drag (hb, GDK_CURRENT_TIME); gtk_widget_queue_resize (GTK_WIDGET (hb)); } static void gtk_handle_box_end_drag (GtkHandleBox *hb, guint32 time) { GtkHandleBoxPrivate *priv = hb->priv; GtkWidget *invisible = gtk_handle_box_get_invisible (); priv->in_drag = FALSE; gtk_device_grab_remove (invisible, priv->grab_device); gdk_device_ungrab (priv->grab_device, time); g_signal_handlers_disconnect_by_func (invisible, G_CALLBACK (gtk_handle_box_grab_event), hb); priv->grab_device = NULL; }