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gtk2/gtk/gtkpaned.c
Benjamin Otte f96777ea02 paned: Be careful about showing windows 
The previous code failed to account for all child visibility and paned
mapedness invariants which could cause stray GDK windows to appear.
Not good.

Credit goes to Xan for triggering it.
2011-05-11 00:47:23 +02:00

2759 lines
81 KiB
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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* 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 "gtkpaned.h"
#include "gtkbindings.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
#include "gtkorientable.h"
#include "gtkwindow.h"
#include "gtktypebuiltins.h"
#include "gtkprivate.h"
#include "gtkintl.h"
/**
* SECTION:gtkpaned
* @Short_description: Base class for widgets with two adjustable panes
* @Title: GtkPaned
*
* #GtkPaned is the base class for widgets with two panes, arranged either
* horizontally (#GtkHPaned) or vertically (#GtkVPaned). Child widgets are
* added to the panes of the widget with gtk_paned_pack1() and
* gtk_paned_pack2(). The division between the two children is set by default
* from the size requests of the children, but it can be adjusted by the
* user.
*
* A paned widget draws a separator between the two child widgets and a
* small handle that the user can drag to adjust the division. It does not
* draw any relief around the children or around the separator. (The space
* in which the separator is called the gutter.) Often, it is useful to put
* each child inside a #GtkFrame with the shadow type set to %GTK_SHADOW_IN
* so that the gutter appears as a ridge. No separator is drawn if one of
* the children is missing.
*
* Each child has two options that can be set, @resize and @shrink. If
* @resize is true, then when the #GtkPaned is resized, that child will
* expand or shrink along with the paned widget. If @shrink is true, then
* that child can be made smaller than its requisition by the user.
* Setting @shrink to %FALSE allows the application to set a minimum size.
* If @resize is false for both children, then this is treated as if
* @resize is true for both children.
*
* The application can set the position of the slider as if it were set
* by the user, by calling gtk_paned_set_position().
*
* <example>
* <title>Creating a paned widget with minimum sizes.</title>
* <programlisting>
* GtkWidget *hpaned = gtk_paned_new (GTK_ORIENTATION_HORIZONTAL);
* GtkWidget *frame1 = gtk_frame_new (NULL);
* GtkWidget *frame2 = gtk_frame_new (NULL);
* gtk_frame_set_shadow_type (GTK_FRAME (frame1), GTK_SHADOW_IN);
* gtk_frame_set_shadow_type (GTK_FRAME (frame2), GTK_SHADOW_IN);
*
* gtk_widget_set_size_request (hpaned, 200, -1);
*
* gtk_paned_pack1 (GTK_PANED (hpaned), frame1, TRUE, FALSE);
* gtk_widget_set_size_request (frame1, 50, -1);
*
* gtk_paned_pack2 (GTK_PANED (hpaned), frame2, FALSE, FALSE);
* gtk_widget_set_size_request (frame2, 50, -1);
* </programlisting>
* </example>
*/
enum {
CHILD1,
CHILD2
};
struct _GtkPanedPrivate
{
GtkPaned *first_paned;
GtkWidget *child1;
GtkWidget *child2;
GdkWindow *child1_window;
GdkWindow *child2_window;
GtkWidget *last_child1_focus;
GtkWidget *last_child2_focus;
GtkWidget *saved_focus;
GtkOrientation orientation;
GdkCursorType cursor_type;
GdkDevice *grab_device;
GdkRectangle handle_pos;
GdkWindow *handle;
gint child1_size;
gint drag_pos;
gint last_allocation;
gint max_position;
gint min_position;
gint original_position;
guint32 grab_time;
guint handle_prelit : 1;
guint in_drag : 1;
guint in_recursion : 1;
guint child1_resize : 1;
guint child1_shrink : 1;
guint child2_resize : 1;
guint child2_shrink : 1;
guint position_set : 1;
};
enum {
PROP_0,
PROP_ORIENTATION,
PROP_POSITION,
PROP_POSITION_SET,
PROP_MIN_POSITION,
PROP_MAX_POSITION
};
enum {
CHILD_PROP_0,
CHILD_PROP_RESIZE,
CHILD_PROP_SHRINK
};
enum {
CYCLE_CHILD_FOCUS,
TOGGLE_HANDLE_FOCUS,
MOVE_HANDLE,
CYCLE_HANDLE_FOCUS,
ACCEPT_POSITION,
CANCEL_POSITION,
LAST_SIGNAL
};
static void gtk_paned_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_paned_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
static void gtk_paned_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec);
static void gtk_paned_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec);
static void gtk_paned_finalize (GObject *object);
static void gtk_paned_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_paned_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural);
static void gtk_paned_get_preferred_width_for_height
(GtkWidget *widget,
gint height,
gint *minimum,
gint *natural);
static void gtk_paned_get_preferred_height_for_width
(GtkWidget *widget,
gint width,
gint *minimum,
gint *natural);
static void gtk_paned_size_allocate (GtkWidget *widget,
GtkAllocation *allocation);
static void gtk_paned_realize (GtkWidget *widget);
static void gtk_paned_unrealize (GtkWidget *widget);
static void gtk_paned_map (GtkWidget *widget);
static void gtk_paned_unmap (GtkWidget *widget);
static void gtk_paned_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state);
static gboolean gtk_paned_draw (GtkWidget *widget,
cairo_t *cr);
static gboolean gtk_paned_enter (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_paned_leave (GtkWidget *widget,
GdkEventCrossing *event);
static gboolean gtk_paned_button_press (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_paned_button_release (GtkWidget *widget,
GdkEventButton *event);
static gboolean gtk_paned_motion (GtkWidget *widget,
GdkEventMotion *event);
static gboolean gtk_paned_focus (GtkWidget *widget,
GtkDirectionType direction);
static gboolean gtk_paned_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event);
static void gtk_paned_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_paned_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_paned_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data);
static void gtk_paned_calc_position (GtkPaned *paned,
gint allocation,
gint child1_req,
gint child2_req);
static void gtk_paned_set_focus_child (GtkContainer *container,
GtkWidget *child);
static void gtk_paned_set_saved_focus (GtkPaned *paned,
GtkWidget *widget);
static void gtk_paned_set_first_paned (GtkPaned *paned,
GtkPaned *first_paned);
static void gtk_paned_set_last_child1_focus (GtkPaned *paned,
GtkWidget *widget);
static void gtk_paned_set_last_child2_focus (GtkPaned *paned,
GtkWidget *widget);
static gboolean gtk_paned_cycle_child_focus (GtkPaned *paned,
gboolean reverse);
static gboolean gtk_paned_cycle_handle_focus (GtkPaned *paned,
gboolean reverse);
static gboolean gtk_paned_move_handle (GtkPaned *paned,
GtkScrollType scroll);
static gboolean gtk_paned_accept_position (GtkPaned *paned);
static gboolean gtk_paned_cancel_position (GtkPaned *paned);
static gboolean gtk_paned_toggle_handle_focus (GtkPaned *paned);
static GType gtk_paned_child_type (GtkContainer *container);
static void gtk_paned_grab_notify (GtkWidget *widget,
gboolean was_grabbed);
G_DEFINE_TYPE_WITH_CODE (GtkPaned, gtk_paned, GTK_TYPE_CONTAINER,
G_IMPLEMENT_INTERFACE (GTK_TYPE_ORIENTABLE,
NULL))
static guint signals[LAST_SIGNAL] = { 0 };
static void
add_tab_bindings (GtkBindingSet *binding_set,
GdkModifierType modifiers)
{
gtk_binding_entry_add_signal (binding_set, GDK_KEY_Tab, modifiers,
"toggle-handle-focus", 0);
gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Tab, modifiers,
"toggle-handle-focus", 0);
}
static void
add_move_binding (GtkBindingSet *binding_set,
guint keyval,
GdkModifierType mask,
GtkScrollType scroll)
{
gtk_binding_entry_add_signal (binding_set, keyval, mask,
"move-handle", 1,
GTK_TYPE_SCROLL_TYPE, scroll);
}
static void
gtk_paned_class_init (GtkPanedClass *class)
{
GObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
GtkPanedClass *paned_class;
GtkBindingSet *binding_set;
object_class = (GObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
container_class = (GtkContainerClass *) class;
paned_class = (GtkPanedClass *) class;
object_class->set_property = gtk_paned_set_property;
object_class->get_property = gtk_paned_get_property;
object_class->finalize = gtk_paned_finalize;
widget_class->get_preferred_width = gtk_paned_get_preferred_width;
widget_class->get_preferred_height = gtk_paned_get_preferred_height;
widget_class->get_preferred_width_for_height = gtk_paned_get_preferred_width_for_height;
widget_class->get_preferred_height_for_width = gtk_paned_get_preferred_height_for_width;
widget_class->size_allocate = gtk_paned_size_allocate;
widget_class->realize = gtk_paned_realize;
widget_class->unrealize = gtk_paned_unrealize;
widget_class->map = gtk_paned_map;
widget_class->unmap = gtk_paned_unmap;
widget_class->draw = gtk_paned_draw;
widget_class->focus = gtk_paned_focus;
widget_class->enter_notify_event = gtk_paned_enter;
widget_class->leave_notify_event = gtk_paned_leave;
widget_class->button_press_event = gtk_paned_button_press;
widget_class->button_release_event = gtk_paned_button_release;
widget_class->motion_notify_event = gtk_paned_motion;
widget_class->grab_broken_event = gtk_paned_grab_broken;
widget_class->grab_notify = gtk_paned_grab_notify;
widget_class->state_flags_changed = gtk_paned_state_flags_changed;
container_class->add = gtk_paned_add;
container_class->remove = gtk_paned_remove;
container_class->forall = gtk_paned_forall;
container_class->child_type = gtk_paned_child_type;
container_class->set_focus_child = gtk_paned_set_focus_child;
container_class->set_child_property = gtk_paned_set_child_property;
container_class->get_child_property = gtk_paned_get_child_property;
gtk_container_class_handle_border_width (container_class);
paned_class->cycle_child_focus = gtk_paned_cycle_child_focus;
paned_class->toggle_handle_focus = gtk_paned_toggle_handle_focus;
paned_class->move_handle = gtk_paned_move_handle;
paned_class->cycle_handle_focus = gtk_paned_cycle_handle_focus;
paned_class->accept_position = gtk_paned_accept_position;
paned_class->cancel_position = gtk_paned_cancel_position;
g_object_class_override_property (object_class,
PROP_ORIENTATION,
"orientation");
g_object_class_install_property (object_class,
PROP_POSITION,
g_param_spec_int ("position",
P_("Position"),
P_("Position of paned separator in pixels (0 means all the way to the left/top)"),
0,
G_MAXINT,
0,
GTK_PARAM_READWRITE));
g_object_class_install_property (object_class,
PROP_POSITION_SET,
g_param_spec_boolean ("position-set",
P_("Position Set"),
P_("TRUE if the Position property should be used"),
FALSE,
GTK_PARAM_READWRITE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("handle-size",
P_("Handle Size"),
P_("Width of handle"),
0,
G_MAXINT,
5,
GTK_PARAM_READABLE));
/**
* GtkPaned:min-position:
*
* The smallest possible value for the position property. This property is derived from the
* size and shrinkability of the widget's children.
*
* Since: 2.4
*/
g_object_class_install_property (object_class,
PROP_MIN_POSITION,
g_param_spec_int ("min-position",
P_("Minimal Position"),
P_("Smallest possible value for the \"position\" property"),
0,
G_MAXINT,
0,
GTK_PARAM_READABLE));
/**
* GtkPaned:max-position:
*
* The largest possible value for the position property. This property is derived from the
* size and shrinkability of the widget's children.
*
* Since: 2.4
*/
g_object_class_install_property (object_class,
PROP_MAX_POSITION,
g_param_spec_int ("max-position",
P_("Maximal Position"),
P_("Largest possible value for the \"position\" property"),
0,
G_MAXINT,
G_MAXINT,
GTK_PARAM_READABLE));
/**
* GtkPaned:resize:
*
* The "resize" child property determines whether the child expands and
* shrinks along with the paned widget.
*
* Since: 2.4
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_RESIZE,
g_param_spec_boolean ("resize",
P_("Resize"),
P_("If TRUE, the child expands and shrinks along with the paned widget"),
TRUE,
GTK_PARAM_READWRITE));
/**
* GtkPaned:shrink:
*
* The "shrink" child property determines whether the child can be made
* smaller than its requisition.
*
* Since: 2.4
*/
gtk_container_class_install_child_property (container_class,
CHILD_PROP_SHRINK,
g_param_spec_boolean ("shrink",
P_("Shrink"),
P_("If TRUE, the child can be made smaller than its requisition"),
TRUE,
GTK_PARAM_READWRITE));
/**
* GtkPaned::cycle-child-focus:
* @widget: the object that received the signal
* @reversed: whether cycling backward or forward
*
* The ::cycle-child-focus signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to cycle the focus between the children of the paned.
*
* The default binding is f6.
*
* Since: 2.0
*/
signals [CYCLE_CHILD_FOCUS] =
g_signal_new (I_("cycle-child-focus"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkPanedClass, cycle_child_focus),
NULL, NULL,
_gtk_marshal_BOOLEAN__BOOLEAN,
G_TYPE_BOOLEAN, 1,
G_TYPE_BOOLEAN);
/**
* GtkPaned::toggle-handle-focus:
* @widget: the object that received the signal
*
* The ::toggle-handle-focus is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to accept the current position of the handle and then
* move focus to the next widget in the focus chain.
*
* The default binding is Tab.
*
* Since: 2.0
*/
signals [TOGGLE_HANDLE_FOCUS] =
g_signal_new (I_("toggle-handle-focus"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkPanedClass, toggle_handle_focus),
NULL, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
/**
* GtkPaned::move-handle:
* @widget: the object that received the signal
* @scroll_type: a #GtkScrollType
*
* The ::move-handle signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to move the handle when the user is using key bindings
* to move it.
*
* Since: 2.0
*/
signals[MOVE_HANDLE] =
g_signal_new (I_("move-handle"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkPanedClass, move_handle),
NULL, NULL,
_gtk_marshal_BOOLEAN__ENUM,
G_TYPE_BOOLEAN, 1,
GTK_TYPE_SCROLL_TYPE);
/**
* GtkPaned::cycle-handle-focus:
* @widget: the object that received the signal
* @reversed: whether cycling backward or forward
*
* The ::cycle-handle-focus signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to cycle whether the paned should grab focus to allow
* the user to change position of the handle by using key bindings.
*
* The default binding for this signal is f8.
*
* Since: 2.0
*/
signals [CYCLE_HANDLE_FOCUS] =
g_signal_new (I_("cycle-handle-focus"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkPanedClass, cycle_handle_focus),
NULL, NULL,
_gtk_marshal_BOOLEAN__BOOLEAN,
G_TYPE_BOOLEAN, 1,
G_TYPE_BOOLEAN);
/**
* GtkPaned::accept-position:
* @widget: the object that received the signal
*
* The ::accept-position signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to accept the current position of the handle when
* moving it using key bindings.
*
* The default binding for this signal is Return or Space.
*
* Since: 2.0
*/
signals [ACCEPT_POSITION] =
g_signal_new (I_("accept-position"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkPanedClass, accept_position),
NULL, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
/**
* GtkPaned::cancel-position:
* @widget: the object that received the signal
*
* The ::cancel-position signal is a
* <link linkend="keybinding-signals">keybinding signal</link>
* which gets emitted to cancel moving the position of the handle using key
* bindings. The position of the handle will be reset to the value prior to
* moving it.
*
* The default binding for this signal is Escape.
*
* Since: 2.0
*/
signals [CANCEL_POSITION] =
g_signal_new (I_("cancel-position"),
G_TYPE_FROM_CLASS (object_class),
G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
G_STRUCT_OFFSET (GtkPanedClass, cancel_position),
NULL, NULL,
_gtk_marshal_BOOLEAN__VOID,
G_TYPE_BOOLEAN, 0);
binding_set = gtk_binding_set_by_class (class);
/* F6 and friends */
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_F6, 0,
"cycle-child-focus", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_F6, GDK_SHIFT_MASK,
"cycle-child-focus", 1,
G_TYPE_BOOLEAN, TRUE);
/* F8 and friends */
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_F8, 0,
"cycle-handle-focus", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_F8, GDK_SHIFT_MASK,
"cycle-handle-focus", 1,
G_TYPE_BOOLEAN, TRUE);
add_tab_bindings (binding_set, 0);
add_tab_bindings (binding_set, GDK_CONTROL_MASK);
add_tab_bindings (binding_set, GDK_SHIFT_MASK);
add_tab_bindings (binding_set, GDK_CONTROL_MASK | GDK_SHIFT_MASK);
/* accept and cancel positions */
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Escape, 0,
"cancel-position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_Return, 0,
"accept-position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_ISO_Enter, 0,
"accept-position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Enter, 0,
"accept-position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_space, 0,
"accept-position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KEY_KP_Space, 0,
"accept-position", 0);
/* move handle */
add_move_binding (binding_set, GDK_KEY_Left, 0, GTK_SCROLL_STEP_LEFT);
add_move_binding (binding_set, GDK_KEY_KP_Left, 0, GTK_SCROLL_STEP_LEFT);
add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_LEFT);
add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_LEFT);
add_move_binding (binding_set, GDK_KEY_Right, 0, GTK_SCROLL_STEP_RIGHT);
add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_KEY_KP_Right, 0, GTK_SCROLL_STEP_RIGHT);
add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_KEY_Up, 0, GTK_SCROLL_STEP_UP);
add_move_binding (binding_set, GDK_KEY_Up, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_KEY_KP_Up, 0, GTK_SCROLL_STEP_UP);
add_move_binding (binding_set, GDK_KEY_KP_Up, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_KEY_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_KEY_KP_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_KEY_Down, 0, GTK_SCROLL_STEP_DOWN);
add_move_binding (binding_set, GDK_KEY_Down, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_DOWN);
add_move_binding (binding_set, GDK_KEY_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
add_move_binding (binding_set, GDK_KEY_KP_Down, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_DOWN);
add_move_binding (binding_set, GDK_KEY_Page_Down, 0, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_KEY_KP_Page_Down, 0, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_KEY_Home, 0, GTK_SCROLL_START);
add_move_binding (binding_set, GDK_KEY_KP_Home, 0, GTK_SCROLL_START);
add_move_binding (binding_set, GDK_KEY_End, 0, GTK_SCROLL_END);
add_move_binding (binding_set, GDK_KEY_KP_End, 0, GTK_SCROLL_END);
g_type_class_add_private (object_class, sizeof (GtkPanedPrivate));
}
static GType
gtk_paned_child_type (GtkContainer *container)
{
GtkPaned *paned = GTK_PANED (container);
GtkPanedPrivate *priv = paned->priv;
if (!priv->child1 || !priv->child2)
return GTK_TYPE_WIDGET;
else
return G_TYPE_NONE;
}
static void
gtk_paned_init (GtkPaned *paned)
{
GtkPanedPrivate *priv;
gtk_widget_set_has_window (GTK_WIDGET (paned), FALSE);
gtk_widget_set_can_focus (GTK_WIDGET (paned), TRUE);
/* We only need to redraw when the handle position moves, which is
* independent of the overall allocation of the GtkPaned
*/
gtk_widget_set_redraw_on_allocate (GTK_WIDGET (paned), FALSE);
paned->priv = G_TYPE_INSTANCE_GET_PRIVATE (paned, GTK_TYPE_PANED, GtkPanedPrivate);
priv = paned->priv;
priv->orientation = GTK_ORIENTATION_HORIZONTAL;
priv->cursor_type = GDK_SB_H_DOUBLE_ARROW;
priv->child1 = NULL;
priv->child2 = NULL;
priv->handle = NULL;
priv->cursor_type = GDK_CROSS;
priv->handle_pos.width = 5;
priv->handle_pos.height = 5;
priv->position_set = FALSE;
priv->last_allocation = -1;
priv->in_drag = FALSE;
priv->last_child1_focus = NULL;
priv->last_child2_focus = NULL;
priv->in_recursion = FALSE;
priv->handle_prelit = FALSE;
priv->original_position = -1;
priv->handle_pos.x = -1;
priv->handle_pos.y = -1;
priv->drag_pos = -1;
}
static void
gtk_paned_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkPaned *paned = GTK_PANED (object);
GtkPanedPrivate *priv = paned->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
priv->orientation = g_value_get_enum (value);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
priv->cursor_type = GDK_SB_H_DOUBLE_ARROW;
else
priv->cursor_type = GDK_SB_V_DOUBLE_ARROW;
/* state_flags_changed updates the cursor */
gtk_paned_state_flags_changed (GTK_WIDGET (paned), 0);
gtk_widget_queue_resize (GTK_WIDGET (paned));
break;
case PROP_POSITION:
gtk_paned_set_position (paned, g_value_get_int (value));
break;
case PROP_POSITION_SET:
priv->position_set = g_value_get_boolean (value);
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (paned));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_paned_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GtkPaned *paned = GTK_PANED (object);
GtkPanedPrivate *priv = paned->priv;
switch (prop_id)
{
case PROP_ORIENTATION:
g_value_set_enum (value, priv->orientation);
break;
case PROP_POSITION:
g_value_set_int (value, priv->child1_size);
break;
case PROP_POSITION_SET:
g_value_set_boolean (value, priv->position_set);
break;
case PROP_MIN_POSITION:
g_value_set_int (value, priv->min_position);
break;
case PROP_MAX_POSITION:
g_value_set_int (value, priv->max_position);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gtk_paned_set_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GtkPaned *paned = GTK_PANED (container);
GtkPanedPrivate *priv = paned->priv;
gboolean old_value, new_value;
g_assert (child == priv->child1 || child == priv->child2);
new_value = g_value_get_boolean (value);
switch (property_id)
{
case CHILD_PROP_RESIZE:
if (child == priv->child1)
{
old_value = priv->child1_resize;
priv->child1_resize = new_value;
}
else
{
old_value = priv->child2_resize;
priv->child2_resize = new_value;
}
break;
case CHILD_PROP_SHRINK:
if (child == priv->child1)
{
old_value = priv->child1_shrink;
priv->child1_shrink = new_value;
}
else
{
old_value = priv->child2_shrink;
priv->child2_shrink = new_value;
}
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
old_value = -1; /* quiet gcc */
break;
}
if (old_value != new_value)
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (container));
}
static void
gtk_paned_get_child_property (GtkContainer *container,
GtkWidget *child,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GtkPaned *paned = GTK_PANED (container);
GtkPanedPrivate *priv = paned->priv;
g_assert (child == priv->child1 || child == priv->child2);
switch (property_id)
{
case CHILD_PROP_RESIZE:
if (child == priv->child1)
g_value_set_boolean (value, priv->child1_resize);
else
g_value_set_boolean (value, priv->child2_resize);
break;
case CHILD_PROP_SHRINK:
if (child == priv->child1)
g_value_set_boolean (value, priv->child1_shrink);
else
g_value_set_boolean (value, priv->child2_shrink);
break;
default:
GTK_CONTAINER_WARN_INVALID_CHILD_PROPERTY_ID (container, property_id, pspec);
break;
}
}
static void
gtk_paned_finalize (GObject *object)
{
GtkPaned *paned = GTK_PANED (object);
gtk_paned_set_saved_focus (paned, NULL);
gtk_paned_set_first_paned (paned, NULL);
G_OBJECT_CLASS (gtk_paned_parent_class)->finalize (object);
}
static void
get_preferred_size_for_size (GtkWidget *widget,
GtkOrientation orientation,
gint size,
gint *minimum,
gint *natural)
{
if (orientation == GTK_ORIENTATION_HORIZONTAL)
if (size < 0)
gtk_widget_get_preferred_width (widget, minimum, natural);
else
gtk_widget_get_preferred_width_for_height (widget, size, minimum, natural);
else
if (size < 0)
gtk_widget_get_preferred_height (widget, minimum, natural);
else
gtk_widget_get_preferred_height_for_width (widget, size, minimum, natural);
}
static void
gtk_paned_get_preferred_size (GtkWidget *widget,
GtkOrientation orientation,
gint size,
gint *minimum,
gint *natural)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
gint child_min, child_nat;
*minimum = *natural = 0;
if (priv->child1 && gtk_widget_get_visible (priv->child1))
{
get_preferred_size_for_size (priv->child1, orientation, size, &child_min, &child_nat);
*minimum = child_min;
*natural = child_nat;
}
if (priv->child2 && gtk_widget_get_visible (priv->child2))
{
get_preferred_size_for_size (priv->child2, orientation, size, &child_min, &child_nat);
if (priv->orientation == orientation)
{
*minimum += child_min;
*natural += child_nat;
}
else
{
*minimum = MAX (*minimum, child_min);
*natural = MAX (*natural, child_nat);
}
}
if (priv->child1 && gtk_widget_get_visible (priv->child1) &&
priv->child2 && gtk_widget_get_visible (priv->child2))
{
gint handle_size;
gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
if (priv->orientation == orientation)
{
*minimum += handle_size;
*natural += handle_size;
}
}
}
static void
gtk_paned_get_preferred_width (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_paned_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, -1, minimum, natural);
}
static void
gtk_paned_get_preferred_height (GtkWidget *widget,
gint *minimum,
gint *natural)
{
gtk_paned_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, -1, minimum, natural);
}
static void
gtk_paned_get_preferred_width_for_height (GtkWidget *widget,
gint height,
gint *minimum,
gint *natural)
{
gtk_paned_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, height, minimum, natural);
}
static void
gtk_paned_get_preferred_height_for_width (GtkWidget *widget,
gint width,
gint *minimum,
gint *natural)
{
gtk_paned_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, width, minimum, natural);
}
static void
flip_child (GtkWidget *widget,
GtkAllocation *child_pos)
{
GtkAllocation allocation;
gint x, width;
gtk_widget_get_allocation (widget, &allocation);
x = allocation.x;
width = allocation.width;
child_pos->x = 2 * x + width - child_pos->x - child_pos->width;
}
static gboolean
gtk_paned_get_child_visible (GtkPaned *paned,
guint id)
{
GtkPanedPrivate *priv = paned->priv;
GtkWidget *child;
child = id == CHILD1 ? priv->child1 : priv->child2;
return (child != NULL && gtk_widget_get_child_visible (child));
}
static void
gtk_paned_set_child_visible (GtkPaned *paned,
guint id,
gboolean visible)
{
GtkPanedPrivate *priv = paned->priv;
GtkWidget *child;
gboolean was_visible;
was_visible = gtk_paned_get_child_visible (paned, id);
child = id == CHILD1 ? priv->child1 : priv->child2;
if (child == NULL)
return;
if (was_visible == visible)
return;
gtk_widget_set_child_visible (child, visible);
if (gtk_widget_get_mapped (GTK_WIDGET (paned)))
{
GdkWindow *window = id == CHILD1 ? priv->child1_window : priv->child2_window;
if (visible)
gdk_window_show (window);
else
gdk_window_hide (window);
}
}
static void
gtk_paned_child_allocate (GtkWidget *child,
GdkWindow *child_window, /* can be NULL */
const GtkAllocation *window_allocation,
GtkAllocation *child_allocation)
{
if (child_window)
gdk_window_move_resize (child_window,
window_allocation->x, window_allocation->y,
window_allocation->width, window_allocation->height);
gtk_widget_size_allocate (child, child_allocation);
}
static void
gtk_paned_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
gtk_widget_set_allocation (widget, allocation);
if (priv->child1 && gtk_widget_get_visible (priv->child1) &&
priv->child2 && gtk_widget_get_visible (priv->child2))
{
GtkAllocation child1_allocation, window1_allocation;
GtkAllocation child2_allocation, window2_allocation;
GtkAllocation priv_child1_allocation;
GdkRectangle old_handle_pos;
gint handle_size;
gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
old_handle_pos = priv->handle_pos;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
gint child1_width, child2_width;
gtk_widget_get_preferred_width_for_height (priv->child1,
allocation->height,
&child1_width, NULL);
gtk_widget_get_preferred_width_for_height (priv->child2,
allocation->height,
&child2_width, NULL);
gtk_paned_calc_position (paned,
MAX (1, allocation->width - handle_size),
child1_width,
child2_width);
priv->handle_pos.x = allocation->x + priv->child1_size;
priv->handle_pos.y = allocation->y;
priv->handle_pos.width = handle_size;
priv->handle_pos.height = allocation->height;
window1_allocation.height = window2_allocation.height = allocation->height;
window1_allocation.width = MAX (1, priv->child1_size);
window1_allocation.x = allocation->x;
window1_allocation.y = window2_allocation.y = allocation->y;
window2_allocation.x = window1_allocation.x + priv->child1_size + priv->handle_pos.width;
window2_allocation.width = MAX (1, allocation->x + allocation->width - window2_allocation.x);
if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
{
flip_child (widget, &(window2_allocation));
flip_child (widget, &(window1_allocation));
flip_child (widget, &(priv->handle_pos));
}
child1_allocation.x = child1_allocation.y = 0;
child1_allocation.width = window1_allocation.width;
child1_allocation.height = window1_allocation.height;
if (child1_width > child1_allocation.width)
{
if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_LTR)
child1_allocation.x -= child1_width - child1_allocation.width;
child1_allocation.width = child1_width;
}
child2_allocation.x = child2_allocation.y = 0;
child2_allocation.width = window2_allocation.width;
child2_allocation.height = window2_allocation.height;
if (child2_width > child2_allocation.width)
{
if (gtk_widget_get_direction (GTK_WIDGET (widget)) == GTK_TEXT_DIR_RTL)
child2_allocation.x -= child2_width - child2_allocation.width;
child2_allocation.width = child2_width;
}
}
else
{
gint child1_height, child2_height;
gtk_widget_get_preferred_height_for_width (priv->child1,
allocation->width,
&child1_height, NULL);
gtk_widget_get_preferred_height_for_width (priv->child2,
allocation->width,
&child2_height, NULL);
gtk_paned_calc_position (paned,
MAX (1, allocation->height - handle_size),
child1_height,
child2_height);
priv->handle_pos.x = allocation->x;
priv->handle_pos.y = allocation->y + priv->child1_size;
priv->handle_pos.width = allocation->width;
priv->handle_pos.height = handle_size;
window1_allocation.width = window2_allocation.width = allocation->width;
window1_allocation.height = MAX (1, priv->child1_size);
window1_allocation.x = window2_allocation.x = allocation->x;
window1_allocation.y = allocation->y;
window2_allocation.y = window1_allocation.y + priv->child1_size + priv->handle_pos.height;
window2_allocation.height = MAX (1, allocation->y + allocation->height - window2_allocation.y);
child1_allocation.x = child1_allocation.y = 0;
child1_allocation.width = window1_allocation.width;
child1_allocation.height = window1_allocation.height;
if (child1_height > child1_allocation.height)
{
child1_allocation.y -= child1_height - child1_allocation.height;
child1_allocation.height = child1_height;
}
child2_allocation.x = child2_allocation.y = 0;
child2_allocation.width = window2_allocation.width;
child2_allocation.height = window2_allocation.height;
if (child2_height > child2_allocation.height)
child2_allocation.height = child2_height;
}
if (gtk_widget_get_mapped (widget) &&
(old_handle_pos.x != priv->handle_pos.x ||
old_handle_pos.y != priv->handle_pos.y ||
old_handle_pos.width != priv->handle_pos.width ||
old_handle_pos.height != priv->handle_pos.height))
{
GdkWindow *window;
window = gtk_widget_get_window (widget);
gdk_window_invalidate_rect (window, &old_handle_pos, FALSE);
gdk_window_invalidate_rect (window, &priv->handle_pos, FALSE);
}
if (gtk_widget_get_realized (widget))
{
if (gtk_widget_get_mapped (widget))
gdk_window_show (priv->handle);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
{
gdk_window_move_resize (priv->handle,
priv->handle_pos.x,
priv->handle_pos.y,
handle_size,
priv->handle_pos.height);
}
else
{
gdk_window_move_resize (priv->handle,
priv->handle_pos.x,
priv->handle_pos.y,
priv->handle_pos.width,
handle_size);
}
}
/* Now allocate the childen, making sure, when resizing not to
* overlap the windows
*/
gtk_widget_get_allocation (priv->child1, &priv_child1_allocation);
if (gtk_widget_get_mapped (widget) &&
((priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
priv_child1_allocation.width < child1_allocation.width) ||
(priv->orientation == GTK_ORIENTATION_VERTICAL &&
priv_child1_allocation.height < child1_allocation.height)))
{
gtk_paned_child_allocate (priv->child2,
priv->child2_window,
&window2_allocation,
&child2_allocation);
gtk_paned_child_allocate (priv->child1,
priv->child1_window,
&window1_allocation,
&child1_allocation);
}
else
{
gtk_paned_child_allocate (priv->child1,
priv->child1_window,
&window1_allocation,
&child1_allocation);
gtk_paned_child_allocate (priv->child2,
priv->child2_window,
&window2_allocation,
&child2_allocation);
}
}
else
{
GtkAllocation window_allocation, child_allocation;
if (gtk_widget_get_realized (widget))
gdk_window_hide (priv->handle);
if (priv->child1)
gtk_paned_set_child_visible (paned, 0, TRUE);
if (priv->child2)
gtk_paned_set_child_visible (paned, 1, TRUE);
window_allocation.x = allocation->x;
window_allocation.y = allocation->y;
window_allocation.width = allocation->width;
window_allocation.height = allocation->height;
child_allocation.x = child_allocation.y = 0;
child_allocation.width = allocation->width;
child_allocation.height = allocation->height;
if (priv->child1 && gtk_widget_get_visible (priv->child1))
{
gtk_paned_child_allocate (priv->child1,
priv->child1_window,
&window_allocation,
&child_allocation);
}
else if (priv->child2 && gtk_widget_get_visible (priv->child2))
{
gtk_paned_child_allocate (priv->child2,
priv->child2_window,
&window_allocation,
&child_allocation);
}
}
}
static GdkWindow *
gtk_paned_create_child_window (GtkPaned *paned,
GtkWidget *child) /* may be NULL */
{
GtkWidget *widget = GTK_WIDGET (paned);
GtkPanedPrivate *priv = paned->priv;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.event_mask = gtk_widget_get_events (widget) | GDK_EXPOSURE_MASK;
if (child)
{
GtkAllocation allocation;
int handle_size;
gtk_widget_style_get (widget, "handle-size", &handle_size, NULL);
gtk_widget_get_allocation (widget, &allocation);
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
child == priv->child2)
attributes.x = priv->handle_pos.x + handle_size;
else
attributes.x = allocation.x;
if (priv->orientation == GTK_ORIENTATION_VERTICAL &&
child == priv->child2)
attributes.y = priv->handle_pos.y + handle_size;
else
attributes.y = allocation.y;
gtk_widget_get_allocation (child, &allocation);
attributes.width = allocation.width;
attributes.height = allocation.height;
attributes_mask = GDK_WA_X | GDK_WA_Y;
}
else
{
attributes.width = 1;
attributes.height = 1;
attributes_mask = 0;
}
window = gdk_window_new (gtk_widget_get_window (widget),
&attributes, attributes_mask);
gdk_window_set_user_data (window, paned);
gtk_style_context_set_background (gtk_widget_get_style_context (widget), window);
if (child)
gtk_widget_set_parent_window (child, window);
return window;
}
static void
gtk_paned_realize (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
GdkWindow *window;
GdkWindowAttr attributes;
gint attributes_mask;
gtk_widget_set_realized (widget, TRUE);
window = gtk_widget_get_parent_window (widget);
gtk_widget_set_window (widget, window);
g_object_ref (window);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_ONLY;
attributes.x = priv->handle_pos.x;
attributes.y = priv->handle_pos.y;
attributes.width = priv->handle_pos.width;
attributes.height = priv->handle_pos.height;
attributes.event_mask = gtk_widget_get_events (widget);
attributes.event_mask |= (GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_POINTER_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y;
if (gtk_widget_is_sensitive (widget))
{
attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
priv->cursor_type);
attributes_mask |= GDK_WA_CURSOR;
}
priv->handle = gdk_window_new (window,
&attributes, attributes_mask);
gdk_window_set_user_data (priv->handle, paned);
if (attributes_mask & GDK_WA_CURSOR)
g_object_unref (attributes.cursor);
priv->child1_window = gtk_paned_create_child_window (paned, priv->child1);
priv->child2_window = gtk_paned_create_child_window (paned, priv->child2);
}
static void
gtk_paned_unrealize (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (priv->child2)
gtk_widget_set_parent_window (priv->child2, NULL);
gdk_window_set_user_data (priv->child2_window, NULL);
gdk_window_destroy (priv->child2_window);
priv->child2_window = NULL;
if (priv->child1)
gtk_widget_set_parent_window (priv->child1, NULL);
gdk_window_set_user_data (priv->child1_window, NULL);
gdk_window_destroy (priv->child1_window);
priv->child1_window = NULL;
if (priv->handle)
{
gdk_window_set_user_data (priv->handle, NULL);
gdk_window_destroy (priv->handle);
priv->handle = NULL;
}
gtk_paned_set_last_child1_focus (paned, NULL);
gtk_paned_set_last_child2_focus (paned, NULL);
gtk_paned_set_saved_focus (paned, NULL);
gtk_paned_set_first_paned (paned, NULL);
GTK_WIDGET_CLASS (gtk_paned_parent_class)->unrealize (widget);
}
static void
gtk_paned_map (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (priv->child1 && gtk_widget_get_visible (priv->child1) &&
priv->child2 && gtk_widget_get_visible (priv->child2))
gdk_window_show (priv->handle);
if (priv->child1 && gtk_widget_get_visible (priv->child1) && gtk_widget_get_child_visible (priv->child1))
gdk_window_show (priv->child1_window);
if (priv->child2 && gtk_widget_get_visible (priv->child2) && gtk_widget_get_child_visible (priv->child2))
gdk_window_show (priv->child2_window);
GTK_WIDGET_CLASS (gtk_paned_parent_class)->map (widget);
}
static void
gtk_paned_unmap (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
gdk_window_hide (priv->handle);
if (gdk_window_is_visible (priv->child1_window))
gdk_window_hide (priv->child1_window);
if (gdk_window_is_visible (priv->child2_window))
gdk_window_hide (priv->child2_window);
GTK_WIDGET_CLASS (gtk_paned_parent_class)->unmap (widget);
}
static gboolean
gtk_paned_draw (GtkWidget *widget,
cairo_t *cr)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (gtk_cairo_should_draw_window (cr, priv->child1_window))
{
cairo_save (cr);
gtk_cairo_transform_to_window (cr, widget, priv->child1_window);
gtk_render_background (gtk_widget_get_style_context (widget),
cr,
0, 0,
gdk_window_get_width (priv->child1_window),
gdk_window_get_height (priv->child1_window));
cairo_restore (cr);
}
if (gtk_cairo_should_draw_window (cr, priv->child2_window))
{
cairo_save (cr);
gtk_cairo_transform_to_window (cr, widget, priv->child2_window);
gtk_render_background (gtk_widget_get_style_context (widget),
cr,
0, 0,
gdk_window_get_width (priv->child2_window),
gdk_window_get_height (priv->child2_window));
cairo_restore (cr);
}
if (gtk_cairo_should_draw_window (cr, gtk_widget_get_window (widget)) &&
priv->child1 && gtk_widget_get_visible (priv->child1) &&
priv->child2 && gtk_widget_get_visible (priv->child2))
{
GtkStyleContext *context;
GtkStateFlags state;
GtkAllocation allocation;
gtk_widget_get_allocation (widget, &allocation);
context = gtk_widget_get_style_context (widget);
state = gtk_widget_get_state_flags (widget);
if (gtk_widget_is_focus (widget))
state |= GTK_STATE_FLAG_SELECTED;
if (priv->handle_prelit)
state |= GTK_STATE_FLAG_PRELIGHT;
gtk_style_context_save (context);
gtk_style_context_set_state (context, state);
gtk_style_context_add_class (context, GTK_STYLE_CLASS_PANE_SEPARATOR);
gtk_render_handle (context, cr,
priv->handle_pos.x - allocation.x,
priv->handle_pos.y - allocation.y,
priv->handle_pos.width,
priv->handle_pos.height);
gtk_style_context_restore (context);
}
/* Chain up to draw children */
GTK_WIDGET_CLASS (gtk_paned_parent_class)->draw (widget, cr);
return FALSE;
}
static gboolean
is_rtl (GtkPaned *paned)
{
GtkPanedPrivate *priv = paned->priv;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL &&
gtk_widget_get_direction (GTK_WIDGET (paned)) == GTK_TEXT_DIR_RTL)
{
return TRUE;
}
return FALSE;
}
static void
update_drag (GtkPaned *paned)
{
GtkPanedPrivate *priv = paned->priv;
GtkAllocation allocation;
GtkWidget *widget = GTK_WIDGET (paned);
gint pos;
gint handle_size;
gint size;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_widget_get_pointer (widget, &pos, NULL);
else
gtk_widget_get_pointer (widget, NULL, &pos);
pos -= priv->drag_pos;
if (is_rtl (paned))
{
gtk_widget_style_get (widget,
"handle-size", &handle_size,
NULL);
gtk_widget_get_allocation (widget, &allocation);
size = allocation.width - pos - handle_size;
}
else
{
size = pos;
}
size = CLAMP (size, priv->min_position, priv->max_position);
if (size != priv->child1_size)
gtk_paned_set_position (paned, size);
}
static gboolean
gtk_paned_enter (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (priv->in_drag)
update_drag (paned);
else
{
priv->handle_prelit = TRUE;
gtk_widget_queue_draw_area (widget,
priv->handle_pos.x,
priv->handle_pos.y,
priv->handle_pos.width,
priv->handle_pos.height);
}
return TRUE;
}
static gboolean
gtk_paned_leave (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (priv->in_drag)
update_drag (paned);
else
{
priv->handle_prelit = FALSE;
gtk_widget_queue_draw_area (widget,
priv->handle_pos.x,
priv->handle_pos.y,
priv->handle_pos.width,
priv->handle_pos.height);
}
return TRUE;
}
static gboolean
gtk_paned_focus (GtkWidget *widget,
GtkDirectionType direction)
{
gboolean retval;
/* This is a hack, but how can this be done without
* excessive cut-and-paste from gtkcontainer.c?
*/
gtk_widget_set_can_focus (widget, FALSE);
retval = GTK_WIDGET_CLASS (gtk_paned_parent_class)->focus (widget, direction);
gtk_widget_set_can_focus (widget, TRUE);
return retval;
}
static gboolean
gtk_paned_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (!priv->in_drag &&
(event->window == priv->handle) && (event->button == 1))
{
/* We need a server grab here, not gtk_grab_add(), since
* we don't want to pass events on to the widget's children */
if (gdk_device_grab (event->device,
priv->handle,
GDK_OWNERSHIP_WINDOW, FALSE,
GDK_POINTER_MOTION_HINT_MASK
| GDK_BUTTON1_MOTION_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK,
NULL, event->time) != GDK_GRAB_SUCCESS)
return FALSE;
priv->in_drag = TRUE;
priv->grab_time = event->time;
priv->grab_device = event->device;
if (priv->orientation == GTK_ORIENTATION_HORIZONTAL)
priv->drag_pos = event->x;
else
priv->drag_pos = event->y;
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_grab_broken (GtkWidget *widget,
GdkEventGrabBroken *event)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
priv->in_drag = FALSE;
priv->drag_pos = -1;
priv->position_set = TRUE;
return TRUE;
}
static void
stop_drag (GtkPaned *paned)
{
GtkPanedPrivate *priv = paned->priv;
priv->in_drag = FALSE;
priv->drag_pos = -1;
priv->position_set = TRUE;
gdk_device_ungrab (priv->grab_device,
priv->grab_time);
priv->grab_device = NULL;
}
static void
gtk_paned_grab_notify (GtkWidget *widget,
gboolean was_grabbed)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
GdkDevice *grab_device;
grab_device = priv->grab_device;
if (priv->in_drag && grab_device &&
gtk_widget_device_is_shadowed (widget, grab_device))
stop_drag (paned);
}
static void
gtk_paned_state_flags_changed (GtkWidget *widget,
GtkStateFlags previous_state)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
GdkCursor *cursor;
if (gtk_widget_get_realized (widget))
{
if (gtk_widget_is_sensitive (widget))
cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
priv->cursor_type);
else
cursor = NULL;
gdk_window_set_cursor (priv->handle, cursor);
if (cursor)
g_object_unref (cursor);
}
}
static gboolean
gtk_paned_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (priv->in_drag && (event->button == 1))
{
stop_drag (paned);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
if (priv->in_drag)
{
update_drag (paned);
return TRUE;
}
return FALSE;
}
/**
* gtk_paned_new:
* @orientation: the paned's orientation.
*
* Creates a new #GtkPaned widget.
*
* Return value: a new #GtkPaned.
*
* Since: 3.0
**/
GtkWidget *
gtk_paned_new (GtkOrientation orientation)
{
return g_object_new (GTK_TYPE_PANED,
"orientation", orientation,
NULL);
}
/**
* gtk_paned_add1:
* @paned: a paned widget
* @child: the child to add
*
* Adds a child to the top or left pane with default parameters. This is
* equivalent to
* <literal>gtk_paned_pack1 (paned, child, FALSE, TRUE)</literal>.
*/
void
gtk_paned_add1 (GtkPaned *paned,
GtkWidget *widget)
{
gtk_paned_pack1 (paned, widget, FALSE, TRUE);
}
/**
* gtk_paned_add2:
* @paned: a paned widget
* @child: the child to add
*
* Adds a child to the bottom or right pane with default parameters. This
* is equivalent to
* <literal>gtk_paned_pack2 (paned, child, TRUE, TRUE)</literal>.
*/
void
gtk_paned_add2 (GtkPaned *paned,
GtkWidget *widget)
{
gtk_paned_pack2 (paned, widget, TRUE, TRUE);
}
/**
* gtk_paned_pack1:
* @paned: a paned widget
* @child: the child to add
* @resize: should this child expand when the paned widget is resized.
* @shrink: can this child be made smaller than its requisition.
*
* Adds a child to the top or left pane.
*/
void
gtk_paned_pack1 (GtkPaned *paned,
GtkWidget *child,
gboolean resize,
gboolean shrink)
{
GtkPanedPrivate *priv;
g_return_if_fail (GTK_IS_PANED (paned));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = paned->priv;
if (!priv->child1)
{
priv->child1 = child;
priv->child1_resize = resize;
priv->child1_shrink = shrink;
gtk_widget_set_parent_window (child, priv->child1_window);
gtk_widget_set_parent (child, GTK_WIDGET (paned));
}
}
/**
* gtk_paned_pack2:
* @paned: a paned widget
* @child: the child to add
* @resize: should this child expand when the paned widget is resized.
* @shrink: can this child be made smaller than its requisition.
*
* Adds a child to the bottom or right pane.
*/
void
gtk_paned_pack2 (GtkPaned *paned,
GtkWidget *child,
gboolean resize,
gboolean shrink)
{
GtkPanedPrivate *priv;
g_return_if_fail (GTK_IS_PANED (paned));
g_return_if_fail (GTK_IS_WIDGET (child));
priv = paned->priv;
if (!priv->child2)
{
priv->child2 = child;
priv->child2_resize = resize;
priv->child2_shrink = shrink;
gtk_widget_set_parent_window (child, priv->child2_window);
gtk_widget_set_parent (child, GTK_WIDGET (paned));
}
}
static void
gtk_paned_add (GtkContainer *container,
GtkWidget *widget)
{
GtkPanedPrivate *priv;
GtkPaned *paned;
g_return_if_fail (GTK_IS_PANED (container));
paned = GTK_PANED (container);
priv = paned->priv;
if (!priv->child1)
gtk_paned_add1 (paned, widget);
else if (!priv->child2)
gtk_paned_add2 (paned, widget);
else
g_warning ("GtkPaned cannot have more than 2 children\n");
}
static void
gtk_paned_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (container);
GtkPanedPrivate *priv = paned->priv;
gboolean was_visible;
was_visible = gtk_widget_get_visible (widget);
if (priv->child1 == widget)
{
if (priv->child1_window && gdk_window_is_visible (priv->child1_window))
gdk_window_hide (priv->child1_window);
gtk_widget_unparent (widget);
priv->child1 = NULL;
if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (container));
}
else if (priv->child2 == widget)
{
if (priv->child2_window && gdk_window_is_visible (priv->child2_window))
gdk_window_hide (priv->child2_window);
gtk_widget_unparent (widget);
priv->child2 = NULL;
if (was_visible && gtk_widget_get_visible (GTK_WIDGET (container)))
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (container));
}
}
static void
gtk_paned_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkPanedPrivate *priv;
GtkPaned *paned;
g_return_if_fail (callback != NULL);
paned = GTK_PANED (container);
priv = paned->priv;
if (priv->child1)
(*callback) (priv->child1, callback_data);
if (priv->child2)
(*callback) (priv->child2, callback_data);
}
/**
* gtk_paned_get_position:
* @paned: a #GtkPaned widget
*
* Obtains the position of the divider between the two panes.
*
* Return value: position of the divider
**/
gint
gtk_paned_get_position (GtkPaned *paned)
{
g_return_val_if_fail (GTK_IS_PANED (paned), 0);
return paned->priv->child1_size;
}
/**
* gtk_paned_set_position:
* @paned: a #GtkPaned widget
* @position: pixel position of divider, a negative value means that the position
* is unset.
*
* Sets the position of the divider between the two panes.
**/
void
gtk_paned_set_position (GtkPaned *paned,
gint position)
{
GtkPanedPrivate *priv;
GObject *object;
g_return_if_fail (GTK_IS_PANED (paned));
priv = paned->priv;
if (priv->child1_size == position)
return;
object = G_OBJECT (paned);
if (position >= 0)
{
/* We don't clamp here - the assumption is that
* if the total allocation changes at the same time
* as the position, the position set is with reference
* to the new total size. If only the position changes,
* then clamping will occur in gtk_paned_calc_position()
*/
priv->child1_size = position;
priv->position_set = TRUE;
}
else
{
priv->position_set = FALSE;
}
g_object_freeze_notify (object);
g_object_notify (object, "position");
g_object_notify (object, "position-set");
g_object_thaw_notify (object);
gtk_widget_queue_resize_no_redraw (GTK_WIDGET (paned));
#ifdef G_OS_WIN32
/* Hacky work-around for bug #144269 */
if (priv->child2 != NULL)
{
gtk_widget_queue_draw (priv->child2);
}
#endif
}
/**
* gtk_paned_get_child1:
* @paned: a #GtkPaned widget
*
* Obtains the first child of the paned widget.
*
* Return value: (transfer none): first child, or %NULL if it is not set.
*
* Since: 2.4
**/
GtkWidget *
gtk_paned_get_child1 (GtkPaned *paned)
{
g_return_val_if_fail (GTK_IS_PANED (paned), NULL);
return paned->priv->child1;
}
/**
* gtk_paned_get_child2:
* @paned: a #GtkPaned widget
*
* Obtains the second child of the paned widget.
*
* Return value: (transfer none): second child, or %NULL if it is not set.
*
* Since: 2.4
**/
GtkWidget *
gtk_paned_get_child2 (GtkPaned *paned)
{
g_return_val_if_fail (GTK_IS_PANED (paned), NULL);
return paned->priv->child2;
}
static void
gtk_paned_calc_position (GtkPaned *paned,
gint allocation,
gint child1_req,
gint child2_req)
{
GtkPanedPrivate *priv = paned->priv;
gint old_position;
gint old_min_position;
gint old_max_position;
old_position = priv->child1_size;
old_min_position = priv->min_position;
old_max_position = priv->max_position;
priv->min_position = priv->child1_shrink ? 0 : child1_req;
priv->max_position = allocation;
if (!priv->child2_shrink)
priv->max_position = MAX (1, priv->max_position - child2_req);
priv->max_position = MAX (priv->min_position, priv->max_position);
if (!priv->position_set)
{
if (priv->child1_resize && !priv->child2_resize)
priv->child1_size = MAX (0, allocation - child2_req);
else if (!priv->child1_resize && priv->child2_resize)
priv->child1_size = child1_req;
else if (child1_req + child2_req != 0)
priv->child1_size = allocation * ((gdouble)child1_req / (child1_req + child2_req)) + 0.5;
else
priv->child1_size = allocation * 0.5 + 0.5;
}
else
{
/* If the position was set before the initial allocation.
* (priv->last_allocation <= 0) just clamp it and leave it.
*/
if (priv->last_allocation > 0)
{
if (priv->child1_resize && !priv->child2_resize)
priv->child1_size += allocation - priv->last_allocation;
else if (!(!priv->child1_resize && priv->child2_resize))
priv->child1_size = allocation * ((gdouble) priv->child1_size / (priv->last_allocation)) + 0.5;
}
}
priv->child1_size = CLAMP (priv->child1_size,
priv->min_position,
priv->max_position);
if (priv->child1)
gtk_paned_set_child_visible (paned, 0, priv->child1_size != 0);
if (priv->child2)
gtk_paned_set_child_visible (paned, 1, priv->child1_size != allocation);
g_object_freeze_notify (G_OBJECT (paned));
if (priv->child1_size != old_position)
g_object_notify (G_OBJECT (paned), "position");
if (priv->min_position != old_min_position)
g_object_notify (G_OBJECT (paned), "min-position");
if (priv->max_position != old_max_position)
g_object_notify (G_OBJECT (paned), "max-position");
g_object_thaw_notify (G_OBJECT (paned));
priv->last_allocation = allocation;
}
static void
gtk_paned_set_saved_focus (GtkPaned *paned, GtkWidget *widget)
{
GtkPanedPrivate *priv = paned->priv;
if (priv->saved_focus)
g_object_remove_weak_pointer (G_OBJECT (priv->saved_focus),
(gpointer *)&(priv->saved_focus));
priv->saved_focus = widget;
if (priv->saved_focus)
g_object_add_weak_pointer (G_OBJECT (priv->saved_focus),
(gpointer *)&(priv->saved_focus));
}
static void
gtk_paned_set_first_paned (GtkPaned *paned, GtkPaned *first_paned)
{
GtkPanedPrivate *priv = paned->priv;
if (priv->first_paned)
g_object_remove_weak_pointer (G_OBJECT (priv->first_paned),
(gpointer *)&(priv->first_paned));
priv->first_paned = first_paned;
if (priv->first_paned)
g_object_add_weak_pointer (G_OBJECT (priv->first_paned),
(gpointer *)&(priv->first_paned));
}
static void
gtk_paned_set_last_child1_focus (GtkPaned *paned, GtkWidget *widget)
{
GtkPanedPrivate *priv = paned->priv;
if (priv->last_child1_focus)
g_object_remove_weak_pointer (G_OBJECT (priv->last_child1_focus),
(gpointer *)&(priv->last_child1_focus));
priv->last_child1_focus = widget;
if (priv->last_child1_focus)
g_object_add_weak_pointer (G_OBJECT (priv->last_child1_focus),
(gpointer *)&(priv->last_child1_focus));
}
static void
gtk_paned_set_last_child2_focus (GtkPaned *paned, GtkWidget *widget)
{
GtkPanedPrivate *priv = paned->priv;
if (priv->last_child2_focus)
g_object_remove_weak_pointer (G_OBJECT (priv->last_child2_focus),
(gpointer *)&(priv->last_child2_focus));
priv->last_child2_focus = widget;
if (priv->last_child2_focus)
g_object_add_weak_pointer (G_OBJECT (priv->last_child2_focus),
(gpointer *)&(priv->last_child2_focus));
}
static GtkWidget *
paned_get_focus_widget (GtkPaned *paned)
{
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (paned));
if (gtk_widget_is_toplevel (toplevel))
return gtk_window_get_focus (GTK_WINDOW (toplevel));
return NULL;
}
static void
gtk_paned_set_focus_child (GtkContainer *container,
GtkWidget *focus_child)
{
GtkPaned *paned;
GtkPanedPrivate *priv;
GtkWidget *container_focus_child;
g_return_if_fail (GTK_IS_PANED (container));
paned = GTK_PANED (container);
priv = paned->priv;
if (focus_child == NULL)
{
GtkWidget *last_focus;
GtkWidget *w;
last_focus = paned_get_focus_widget (paned);
if (last_focus)
{
/* If there is one or more paned widgets between us and the
* focus widget, we want the topmost of those as last_focus
*/
for (w = last_focus; w != GTK_WIDGET (paned); w = gtk_widget_get_parent (w))
if (GTK_IS_PANED (w))
last_focus = w;
container_focus_child = gtk_container_get_focus_child (container);
if (container_focus_child == priv->child1)
gtk_paned_set_last_child1_focus (paned, last_focus);
else if (container_focus_child == priv->child2)
gtk_paned_set_last_child2_focus (paned, last_focus);
}
}
if (GTK_CONTAINER_CLASS (gtk_paned_parent_class)->set_focus_child)
GTK_CONTAINER_CLASS (gtk_paned_parent_class)->set_focus_child (container, focus_child);
}
static void
gtk_paned_get_cycle_chain (GtkPaned *paned,
GtkDirectionType direction,
GList **widgets)
{
GtkPanedPrivate *priv = paned->priv;
GtkContainer *container = GTK_CONTAINER (paned);
GtkWidget *ancestor = NULL;
GtkWidget *focus_child;
GtkWidget *parent;
GtkWidget *widget = GTK_WIDGET (paned);
GList *temp_list = NULL;
GList *list;
if (priv->in_recursion)
return;
g_assert (widgets != NULL);
if (priv->last_child1_focus &&
!gtk_widget_is_ancestor (priv->last_child1_focus, widget))
{
gtk_paned_set_last_child1_focus (paned, NULL);
}
if (priv->last_child2_focus &&
!gtk_widget_is_ancestor (priv->last_child2_focus, widget))
{
gtk_paned_set_last_child2_focus (paned, NULL);
}
parent = gtk_widget_get_parent (widget);
if (parent)
ancestor = gtk_widget_get_ancestor (parent, GTK_TYPE_PANED);
/* The idea here is that temp_list is a list of widgets we want to cycle
* to. The list is prioritized so that the first element is our first
* choice, the next our second, and so on.
*
* We can't just use g_list_reverse(), because we want to try
* priv->last_child?_focus before priv->child?, both when we
* are going forward and backward.
*/
focus_child = gtk_container_get_focus_child (container);
if (direction == GTK_DIR_TAB_FORWARD)
{
if (focus_child == priv->child1)
{
temp_list = g_list_append (temp_list, priv->last_child2_focus);
temp_list = g_list_append (temp_list, priv->child2);
temp_list = g_list_append (temp_list, ancestor);
}
else if (focus_child == priv->child2)
{
temp_list = g_list_append (temp_list, ancestor);
temp_list = g_list_append (temp_list, priv->last_child1_focus);
temp_list = g_list_append (temp_list, priv->child1);
}
else
{
temp_list = g_list_append (temp_list, priv->last_child1_focus);
temp_list = g_list_append (temp_list, priv->child1);
temp_list = g_list_append (temp_list, priv->last_child2_focus);
temp_list = g_list_append (temp_list, priv->child2);
temp_list = g_list_append (temp_list, ancestor);
}
}
else
{
if (focus_child == priv->child1)
{
temp_list = g_list_append (temp_list, ancestor);
temp_list = g_list_append (temp_list, priv->last_child2_focus);
temp_list = g_list_append (temp_list, priv->child2);
}
else if (focus_child == priv->child2)
{
temp_list = g_list_append (temp_list, priv->last_child1_focus);
temp_list = g_list_append (temp_list, priv->child1);
temp_list = g_list_append (temp_list, ancestor);
}
else
{
temp_list = g_list_append (temp_list, priv->last_child2_focus);
temp_list = g_list_append (temp_list, priv->child2);
temp_list = g_list_append (temp_list, priv->last_child1_focus);
temp_list = g_list_append (temp_list, priv->child1);
temp_list = g_list_append (temp_list, ancestor);
}
}
/* Walk the list and expand all the paned widgets. */
for (list = temp_list; list != NULL; list = list->next)
{
GtkWidget *widget = list->data;
if (widget)
{
if (GTK_IS_PANED (widget))
{
priv->in_recursion = TRUE;
gtk_paned_get_cycle_chain (GTK_PANED (widget), direction, widgets);
priv->in_recursion = FALSE;
}
else
{
*widgets = g_list_append (*widgets, widget);
}
}
}
g_list_free (temp_list);
}
static gboolean
gtk_paned_cycle_child_focus (GtkPaned *paned,
gboolean reversed)
{
GList *cycle_chain = NULL;
GList *list;
GtkDirectionType direction = reversed? GTK_DIR_TAB_BACKWARD : GTK_DIR_TAB_FORWARD;
/* ignore f6 if the handle is focused */
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
return TRUE;
/* we can't just let the event propagate up the hierarchy,
* because the paned will want to cycle focus _unless_ an
* ancestor paned handles the event
*/
gtk_paned_get_cycle_chain (paned, direction, &cycle_chain);
for (list = cycle_chain; list != NULL; list = list->next)
if (gtk_widget_child_focus (GTK_WIDGET (list->data), direction))
break;
g_list_free (cycle_chain);
return TRUE;
}
static void
get_child_panes (GtkWidget *widget,
GList **panes)
{
if (!widget || !gtk_widget_get_realized (widget))
return;
if (GTK_IS_PANED (widget))
{
GtkPaned *paned = GTK_PANED (widget);
GtkPanedPrivate *priv = paned->priv;
get_child_panes (priv->child1, panes);
*panes = g_list_prepend (*panes, widget);
get_child_panes (priv->child2, panes);
}
else if (GTK_IS_CONTAINER (widget))
{
gtk_container_forall (GTK_CONTAINER (widget),
(GtkCallback)get_child_panes, panes);
}
}
static GList *
get_all_panes (GtkPaned *paned)
{
GtkPaned *topmost = NULL;
GList *result = NULL;
GtkWidget *w;
for (w = GTK_WIDGET (paned); w != NULL; w = gtk_widget_get_parent (w))
{
if (GTK_IS_PANED (w))
topmost = GTK_PANED (w);
}
g_assert (topmost);
get_child_panes (GTK_WIDGET (topmost), &result);
return g_list_reverse (result);
}
static void
gtk_paned_find_neighbours (GtkPaned *paned,
GtkPaned **next,
GtkPaned **prev)
{
GList *all_panes;
GList *this_link;
all_panes = get_all_panes (paned);
g_assert (all_panes);
this_link = g_list_find (all_panes, paned);
g_assert (this_link);
if (this_link->next)
*next = this_link->next->data;
else
*next = all_panes->data;
if (this_link->prev)
*prev = this_link->prev->data;
else
*prev = g_list_last (all_panes)->data;
g_list_free (all_panes);
}
static gboolean
gtk_paned_move_handle (GtkPaned *paned,
GtkScrollType scroll)
{
GtkPanedPrivate *priv = paned->priv;
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
gint old_position;
gint new_position;
gint increment;
enum {
SINGLE_STEP_SIZE = 1,
PAGE_STEP_SIZE = 75
};
new_position = old_position = gtk_paned_get_position (paned);
increment = 0;
switch (scroll)
{
case GTK_SCROLL_STEP_LEFT:
case GTK_SCROLL_STEP_UP:
case GTK_SCROLL_STEP_BACKWARD:
increment = - SINGLE_STEP_SIZE;
break;
case GTK_SCROLL_STEP_RIGHT:
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_FORWARD:
increment = SINGLE_STEP_SIZE;
break;
case GTK_SCROLL_PAGE_LEFT:
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_BACKWARD:
increment = - PAGE_STEP_SIZE;
break;
case GTK_SCROLL_PAGE_RIGHT:
case GTK_SCROLL_PAGE_DOWN:
case GTK_SCROLL_PAGE_FORWARD:
increment = PAGE_STEP_SIZE;
break;
case GTK_SCROLL_START:
new_position = priv->min_position;
break;
case GTK_SCROLL_END:
new_position = priv->max_position;
break;
default:
break;
}
if (increment)
{
if (is_rtl (paned))
increment = -increment;
new_position = old_position + increment;
}
new_position = CLAMP (new_position, priv->min_position, priv->max_position);
if (old_position != new_position)
gtk_paned_set_position (paned, new_position);
return TRUE;
}
return FALSE;
}
static void
gtk_paned_restore_focus (GtkPaned *paned)
{
GtkPanedPrivate *priv = paned->priv;
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
if (priv->saved_focus &&
gtk_widget_get_sensitive (priv->saved_focus))
{
gtk_widget_grab_focus (priv->saved_focus);
}
else
{
/* the saved focus is somehow not available for focusing,
* try
* 1) tabbing into the paned widget
* if that didn't work,
* 2) unset focus for the window if there is one
*/
if (!gtk_widget_child_focus (GTK_WIDGET (paned), GTK_DIR_TAB_FORWARD))
{
GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (paned));
if (GTK_IS_WINDOW (toplevel))
gtk_window_set_focus (GTK_WINDOW (toplevel), NULL);
}
}
gtk_paned_set_saved_focus (paned, NULL);
gtk_paned_set_first_paned (paned, NULL);
}
}
static gboolean
gtk_paned_accept_position (GtkPaned *paned)
{
GtkPanedPrivate *priv = paned->priv;
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
priv->original_position = -1;
gtk_paned_restore_focus (paned);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_cancel_position (GtkPaned *paned)
{
GtkPanedPrivate *priv = paned->priv;
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
if (priv->original_position != -1)
{
gtk_paned_set_position (paned, priv->original_position);
priv->original_position = -1;
}
gtk_paned_restore_focus (paned);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_cycle_handle_focus (GtkPaned *paned,
gboolean reversed)
{
GtkPanedPrivate *priv = paned->priv;
GtkPaned *next, *prev;
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
GtkPaned *focus = NULL;
if (!priv->first_paned)
{
/* The first_pane has disappeared. As an ad-hoc solution,
* we make the currently focused paned the first_paned. To the
* user this will seem like the paned cycling has been reset.
*/
gtk_paned_set_first_paned (paned, paned);
}
gtk_paned_find_neighbours (paned, &next, &prev);
if (reversed && prev &&
prev != paned && paned != priv->first_paned)
{
focus = prev;
}
else if (!reversed && next &&
next != paned && next != priv->first_paned)
{
focus = next;
}
else
{
gtk_paned_accept_position (paned);
return TRUE;
}
g_assert (focus);
gtk_paned_set_saved_focus (focus, priv->saved_focus);
gtk_paned_set_first_paned (focus, priv->first_paned);
gtk_paned_set_saved_focus (paned, NULL);
gtk_paned_set_first_paned (paned, NULL);
gtk_widget_grab_focus (GTK_WIDGET (focus));
if (!gtk_widget_is_focus (GTK_WIDGET (paned)))
{
priv->original_position = -1;
focus->priv->original_position = gtk_paned_get_position (focus);
}
}
else
{
GtkContainer *container = GTK_CONTAINER (paned);
GtkPaned *focus;
GtkPaned *first;
GtkPaned *prev, *next;
GtkWidget *toplevel;
GtkWidget *focus_child;
gtk_paned_find_neighbours (paned, &next, &prev);
focus_child = gtk_container_get_focus_child (container);
if (focus_child == priv->child1)
{
if (reversed)
{
focus = prev;
first = paned;
}
else
{
focus = paned;
first = paned;
}
}
else if (focus_child == priv->child2)
{
if (reversed)
{
focus = paned;
first = next;
}
else
{
focus = next;
first = next;
}
}
else
{
/* Focus is not inside this paned, and we don't have focus.
* Presumably this happened because the application wants us
* to start keyboard navigating.
*/
focus = paned;
if (reversed)
first = paned;
else
first = next;
}
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (paned));
if (GTK_IS_WINDOW (toplevel))
gtk_paned_set_saved_focus (focus, gtk_window_get_focus (GTK_WINDOW (toplevel)));
gtk_paned_set_first_paned (focus, first);
focus->priv->original_position = gtk_paned_get_position (focus);
gtk_widget_grab_focus (GTK_WIDGET (focus));
}
return TRUE;
}
static gboolean
gtk_paned_toggle_handle_focus (GtkPaned *paned)
{
/* This function/signal has the wrong name. It is called when you
* press Tab or Shift-Tab and what we do is act as if
* the user pressed Return and then Tab or Shift-Tab
*/
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
gtk_paned_accept_position (paned);
return FALSE;
}
/**
* gtk_paned_get_handle_window:
* @paned: a #GtkPaned
*
* Returns the #GdkWindow of the handle. This function is
* useful when handling button or motion events because it
* enables the callback to distinguish between the window
* of the paned, a child and the handle.
*
* Return value: (transfer none): the paned's handle window.
*
* Since: 2.20
**/
GdkWindow *
gtk_paned_get_handle_window (GtkPaned *paned)
{
g_return_val_if_fail (GTK_IS_PANED (paned), NULL);
return paned->priv->handle;
}
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