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gtk/gtk/gtkpaned.c
Soeren Sandmann ff914ce350 New GtkPaned keyboard navigation. (Shift-)F8 now cycles the available 
Fri Oct 25 18:17:39 2002  Soeren Sandmann  <sandmann@daimi.au.dk>

	* gtk/gtkpaned.[ch]: New GtkPaned keyboard navigation. (Shift-)F8
	now cycles the available handles instead of toggling focus on and
	off. Fixes #87160, reported by Calum Benson.
2002-10-25 16:28:14 +00:00

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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 "gtkintl.h"
#include "gtkpaned.h"
#include "gtkbindings.h"
#include "gtksignal.h"
#include "gdk/gdkkeysyms.h"
#include "gtkwindow.h"
#include "gtkmain.h"
#include "gtkmarshalers.h"
enum {
PROP_0,
PROP_POSITION,
PROP_POSITION_SET
};
enum {
CYCLE_CHILD_FOCUS,
TOGGLE_HANDLE_FOCUS,
MOVE_HANDLE,
CYCLE_HANDLE_FOCUS,
ACCEPT_POSITION,
CANCEL_POSITION,
LAST_SIGNAL
};
static void gtk_paned_class_init (GtkPanedClass *klass);
static void gtk_paned_init (GtkPaned *paned);
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_finalize (GObject *object);
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 gboolean gtk_paned_expose (GtkWidget *widget,
GdkEventExpose *event);
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 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_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 GtkContainerClass *parent_class = NULL;
struct _GtkPanedPrivate
{
GtkWidget *saved_focus;
GtkPaned *first_paned;
};
GType
gtk_paned_get_type (void)
{
static GType paned_type = 0;
if (!paned_type)
{
static const GTypeInfo paned_info =
{
sizeof (GtkPanedClass),
NULL, /* base_init */
NULL, /* base_finalize */
(GClassInitFunc) gtk_paned_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GtkPaned),
0, /* n_preallocs */
(GInstanceInitFunc) gtk_paned_init,
NULL, /* value_table */
};
paned_type = g_type_register_static (GTK_TYPE_CONTAINER, "GtkPaned",
&paned_info, G_TYPE_FLAG_ABSTRACT);
}
return paned_type;
}
static guint signals[LAST_SIGNAL] = { 0 };
static void
add_tab_bindings (GtkBindingSet *binding_set,
GdkModifierType modifiers)
{
gtk_binding_entry_add_signal (binding_set, GDK_Tab, modifiers,
"toggle_handle_focus", 0);
gtk_binding_entry_add_signal (binding_set, GDK_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;
parent_class = g_type_class_peek_parent (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->realize = gtk_paned_realize;
widget_class->unrealize = gtk_paned_unrealize;
widget_class->map = gtk_paned_map;
widget_class->unmap = gtk_paned_unmap;
widget_class->expose_event = gtk_paned_expose;
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;
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;
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_install_property (object_class,
PROP_POSITION,
g_param_spec_int ("position",
_("Position"),
_("Position of paned separator in pixels (0 means all the way to the left/top)"),
0,
G_MAXINT,
0,
G_PARAM_READABLE | G_PARAM_WRITABLE));
g_object_class_install_property (object_class,
PROP_POSITION_SET,
g_param_spec_boolean ("position_set",
_("Position Set"),
_("TRUE if the Position property should be used"),
FALSE,
G_PARAM_READABLE | G_PARAM_WRITABLE));
gtk_widget_class_install_style_property (widget_class,
g_param_spec_int ("handle_size",
_("Handle Size"),
_("Width of handle"),
0,
G_MAXINT,
5,
G_PARAM_READABLE));
signals [CYCLE_HANDLE_FOCUS] =
g_signal_new ("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);
signals [TOGGLE_HANDLE_FOCUS] =
g_signal_new ("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);
signals[MOVE_HANDLE] =
g_signal_new ("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);
signals [CYCLE_HANDLE_FOCUS] =
g_signal_new ("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);
signals [ACCEPT_POSITION] =
g_signal_new ("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);
signals [CANCEL_POSITION] =
g_signal_new ("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_F6, 0,
"cycle_child_focus", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_F6, GDK_SHIFT_MASK,
"cycle_child_focus", 1,
G_TYPE_BOOLEAN, TRUE);
/* F8 and friends */
gtk_binding_entry_add_signal (binding_set,
GDK_F8, 0,
"cycle_handle_focus", 1,
G_TYPE_BOOLEAN, FALSE);
gtk_binding_entry_add_signal (binding_set,
GDK_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_Escape, 0,
"cancel_position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_Return, 0,
"accept_position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Enter, 0,
"accept_position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_space, 0,
"accept_position", 0);
gtk_binding_entry_add_signal (binding_set,
GDK_KP_Space, 0,
"accept_position", 0);
/* move handle */
add_move_binding (binding_set, GDK_Left, 0, GTK_SCROLL_STEP_LEFT);
add_move_binding (binding_set, GDK_KP_Left, 0, GTK_SCROLL_STEP_LEFT);
add_move_binding (binding_set, GDK_Left, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_LEFT);
add_move_binding (binding_set, GDK_KP_Left, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_LEFT);
add_move_binding (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_RIGHT);
add_move_binding (binding_set, GDK_Right, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_KP_Right, 0, GTK_SCROLL_STEP_RIGHT);
add_move_binding (binding_set, GDK_KP_Right, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_Up, 0, GTK_SCROLL_STEP_UP);
add_move_binding (binding_set, GDK_Up, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_KP_Up, 0, GTK_SCROLL_STEP_UP);
add_move_binding (binding_set, GDK_KP_Up, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_KP_Page_Up, 0, GTK_SCROLL_PAGE_UP);
add_move_binding (binding_set, GDK_Down, 0, GTK_SCROLL_STEP_DOWN);
add_move_binding (binding_set, GDK_Down, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_DOWN);
add_move_binding (binding_set, GDK_KP_Down, 0, GTK_SCROLL_STEP_DOWN);
add_move_binding (binding_set, GDK_KP_Down, GDK_CONTROL_MASK, GTK_SCROLL_PAGE_DOWN);
add_move_binding (binding_set, GDK_Page_Down, 0, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_KP_Page_Down, 0, GTK_SCROLL_PAGE_RIGHT);
add_move_binding (binding_set, GDK_Home, 0, GTK_SCROLL_START);
add_move_binding (binding_set, GDK_KP_Home, 0, GTK_SCROLL_START);
add_move_binding (binding_set, GDK_End, 0, GTK_SCROLL_END);
add_move_binding (binding_set, GDK_KP_End, 0, GTK_SCROLL_END);
}
static GType
gtk_paned_child_type (GtkContainer *container)
{
if (!GTK_PANED (container)->child1 || !GTK_PANED (container)->child2)
return GTK_TYPE_WIDGET;
else
return G_TYPE_NONE;
}
static void
gtk_paned_init (GtkPaned *paned)
{
GTK_WIDGET_SET_FLAGS (paned, GTK_NO_WINDOW | GTK_CAN_FOCUS);
paned->child1 = NULL;
paned->child2 = NULL;
paned->handle = NULL;
paned->xor_gc = NULL;
paned->cursor_type = GDK_CROSS;
paned->handle_pos.width = 5;
paned->handle_pos.height = 5;
paned->position_set = FALSE;
paned->last_allocation = -1;
paned->in_drag = FALSE;
paned->priv = g_new0 (GtkPanedPrivate, 1);
paned->last_child1_focus = NULL;
paned->last_child2_focus = NULL;
paned->in_recursion = FALSE;
paned->handle_prelit = FALSE;
paned->original_position = -1;
paned->handle_pos.x = -1;
paned->handle_pos.y = -1;
paned->drag_pos = -1;
}
static void
gtk_paned_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GtkPaned *paned = GTK_PANED (object);
switch (prop_id)
{
case PROP_POSITION:
gtk_paned_set_position (paned, g_value_get_int (value));
break;
case PROP_POSITION_SET:
paned->position_set = g_value_get_boolean (value);
gtk_widget_queue_resize (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);
switch (prop_id)
{
case PROP_POSITION:
g_value_set_int (value, paned->child1_size);
break;
case PROP_POSITION_SET:
g_value_set_boolean (value, paned->position_set);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_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_free (paned->priv);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static void
gtk_paned_realize (GtkWidget *widget)
{
GtkPaned *paned;
GdkWindowAttr attributes;
gint attributes_mask;
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
paned = GTK_PANED (widget);
widget->window = gtk_widget_get_parent_window (widget);
g_object_ref (widget->window);
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_ONLY;
attributes.x = paned->handle_pos.x;
attributes.y = paned->handle_pos.y;
attributes.width = paned->handle_pos.width;
attributes.height = paned->handle_pos.height;
attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
paned->cursor_type);
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 | GDK_WA_CURSOR;
paned->handle = gdk_window_new (widget->window,
&attributes, attributes_mask);
gdk_window_set_user_data (paned->handle, paned);
gdk_cursor_unref (attributes.cursor);
widget->style = gtk_style_attach (widget->style, widget->window);
if (paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
gdk_window_show (paned->handle);
}
static void
gtk_paned_unrealize (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
if (paned->xor_gc)
{
g_object_unref (paned->xor_gc);
paned->xor_gc = NULL;
}
if (paned->handle)
{
gdk_window_set_user_data (paned->handle, NULL);
gdk_window_destroy (paned->handle);
paned->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);
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_paned_map (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
gdk_window_show (paned->handle);
GTK_WIDGET_CLASS (parent_class)->map (widget);
}
static void
gtk_paned_unmap (GtkWidget *widget)
{
GtkPaned *paned = GTK_PANED (widget);
gdk_window_hide (paned->handle);
GTK_WIDGET_CLASS (parent_class)->unmap (widget);
}
static gboolean
gtk_paned_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkPaned *paned = GTK_PANED (widget);
if (GTK_WIDGET_VISIBLE (widget) && GTK_WIDGET_MAPPED (widget) &&
paned->child1 && GTK_WIDGET_VISIBLE (paned->child1) &&
paned->child2 && GTK_WIDGET_VISIBLE (paned->child2))
{
GdkRegion *region;
region = gdk_region_rectangle (&paned->handle_pos);
gdk_region_intersect (region, event->region);
if (!gdk_region_empty (region))
{
GtkStateType state;
GdkRectangle clip;
gdk_region_get_clipbox (region, &clip);
if (gtk_widget_is_focus (widget))
state = GTK_STATE_SELECTED;
else if (paned->handle_prelit)
state = GTK_STATE_PRELIGHT;
else
state = GTK_WIDGET_STATE (widget);
gtk_paint_handle (widget->style, widget->window,
state, GTK_SHADOW_NONE,
&clip, widget, "paned",
paned->handle_pos.x, paned->handle_pos.y,
paned->handle_pos.width, paned->handle_pos.height,
paned->orientation);
}
gdk_region_destroy (region);
}
/* Chain up to draw children */
GTK_WIDGET_CLASS (parent_class)->expose_event (widget, event);
return FALSE;
}
static void
update_drag (GtkPaned *paned)
{
gint pos;
gint handle_size;
gint size;
if (paned->orientation == GTK_ORIENTATION_HORIZONTAL)
gtk_widget_get_pointer (GTK_WIDGET (paned), NULL, &pos);
else
gtk_widget_get_pointer (GTK_WIDGET (paned), &pos, NULL);
gtk_widget_style_get (GTK_WIDGET (paned), "handle_size", &handle_size, NULL);
size = pos - GTK_CONTAINER (paned)->border_width - paned->drag_pos;
size = CLAMP (size, paned->min_position, paned->max_position);
if (size != paned->child1_size)
gtk_paned_set_position (paned, size);
}
static gboolean
gtk_paned_enter (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkPaned *paned = GTK_PANED (widget);
if (paned->in_drag)
update_drag (paned);
else
{
paned->handle_prelit = TRUE;
gtk_widget_queue_draw_area (widget,
paned->handle_pos.x,
paned->handle_pos.y,
paned->handle_pos.width,
paned->handle_pos.height);
}
return TRUE;
}
static gboolean
gtk_paned_leave (GtkWidget *widget,
GdkEventCrossing *event)
{
GtkPaned *paned = GTK_PANED (widget);
if (paned->in_drag)
update_drag (paned);
else
{
paned->handle_prelit = FALSE;
gtk_widget_queue_draw_area (widget,
paned->handle_pos.x,
paned->handle_pos.y,
paned->handle_pos.width,
paned->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_UNSET_FLAGS (widget, GTK_CAN_FOCUS);
retval = (* GTK_WIDGET_CLASS (parent_class)->focus) (widget, direction);
GTK_WIDGET_SET_FLAGS (widget, GTK_CAN_FOCUS);
return retval;
}
static gboolean
gtk_paned_button_press (GtkWidget *widget,
GdkEventButton *event)
{
GtkPaned *paned = GTK_PANED (widget);
if (!paned->in_drag &&
(event->window == paned->handle) && (event->button == 1))
{
paned->in_drag = TRUE;
/* We need a server grab here, not gtk_grab_add(), since
* we don't want to pass events on to the widget's children */
gdk_pointer_grab (paned->handle, FALSE,
GDK_POINTER_MOTION_HINT_MASK
| GDK_BUTTON1_MOTION_MASK
| GDK_BUTTON_RELEASE_MASK
| GDK_ENTER_NOTIFY_MASK
| GDK_LEAVE_NOTIFY_MASK,
NULL, NULL,
event->time);
if (paned->orientation == GTK_ORIENTATION_HORIZONTAL)
paned->drag_pos = event->y;
else
paned->drag_pos = event->x;
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_button_release (GtkWidget *widget,
GdkEventButton *event)
{
GtkPaned *paned = GTK_PANED (widget);
if (paned->in_drag && (event->button == 1))
{
paned->in_drag = FALSE;
paned->drag_pos = -1;
paned->position_set = TRUE;
gdk_display_pointer_ungrab (gtk_widget_get_display (widget),
event->time);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GtkPaned *paned = GTK_PANED (widget);
if (paned->in_drag)
{
update_drag (paned);
return TRUE;
}
return FALSE;
}
void
gtk_paned_add1 (GtkPaned *paned,
GtkWidget *widget)
{
gtk_paned_pack1 (paned, widget, FALSE, TRUE);
}
void
gtk_paned_add2 (GtkPaned *paned,
GtkWidget *widget)
{
gtk_paned_pack2 (paned, widget, TRUE, TRUE);
}
void
gtk_paned_pack1 (GtkPaned *paned,
GtkWidget *child,
gboolean resize,
gboolean shrink)
{
g_return_if_fail (GTK_IS_PANED (paned));
g_return_if_fail (GTK_IS_WIDGET (child));
if (!paned->child1)
{
paned->child1 = child;
paned->child1_resize = resize;
paned->child1_shrink = shrink;
gtk_widget_set_parent (child, GTK_WIDGET (paned));
}
}
void
gtk_paned_pack2 (GtkPaned *paned,
GtkWidget *child,
gboolean resize,
gboolean shrink)
{
g_return_if_fail (GTK_IS_PANED (paned));
g_return_if_fail (GTK_IS_WIDGET (child));
if (!paned->child2)
{
paned->child2 = child;
paned->child2_resize = resize;
paned->child2_shrink = shrink;
gtk_widget_set_parent (child, GTK_WIDGET (paned));
}
}
static void
gtk_paned_add (GtkContainer *container,
GtkWidget *widget)
{
GtkPaned *paned;
g_return_if_fail (GTK_IS_PANED (container));
paned = GTK_PANED (container);
if (!paned->child1)
gtk_paned_add1 (paned, widget);
else if (!paned->child2)
gtk_paned_add2 (paned, widget);
}
static void
gtk_paned_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkPaned *paned;
gboolean was_visible;
paned = GTK_PANED (container);
was_visible = GTK_WIDGET_VISIBLE (widget);
if (paned->child1 == widget)
{
gtk_widget_unparent (widget);
paned->child1 = NULL;
if (was_visible && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
else if (paned->child2 == widget)
{
gtk_widget_unparent (widget);
paned->child2 = NULL;
if (was_visible && GTK_WIDGET_VISIBLE (container))
gtk_widget_queue_resize (GTK_WIDGET (container));
}
}
static void
gtk_paned_forall (GtkContainer *container,
gboolean include_internals,
GtkCallback callback,
gpointer callback_data)
{
GtkPaned *paned;
g_return_if_fail (callback != NULL);
paned = GTK_PANED (container);
if (paned->child1)
(*callback) (paned->child1, callback_data);
if (paned->child2)
(*callback) (paned->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->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)
{
GObject *object;
g_return_if_fail (GTK_IS_PANED (paned));
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_compute_position()
*/
paned->child1_size = position;
paned->position_set = TRUE;
}
else
{
paned->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 (GTK_WIDGET (paned));
}
void
gtk_paned_compute_position (GtkPaned *paned,
gint allocation,
gint child1_req,
gint child2_req)
{
gint old_position;
g_return_if_fail (GTK_IS_PANED (paned));
old_position = paned->child1_size;
paned->min_position = paned->child1_shrink ? 0 : child1_req;
paned->max_position = allocation;
if (!paned->child2_shrink)
paned->max_position = MAX (1, paned->max_position - child2_req);
if (!paned->position_set)
{
if (paned->child1_resize && !paned->child2_resize)
paned->child1_size = MAX (0, allocation - child2_req);
else if (!paned->child1_resize && paned->child2_resize)
paned->child1_size = child1_req;
else if (child1_req + child2_req != 0)
paned->child1_size = allocation * ((gdouble)child1_req / (child1_req + child2_req));
else
paned->child1_size = allocation * 0.5;
}
else
{
/* If the position was set before the initial allocation.
* (paned->last_allocation <= 0) just clamp it and leave it.
*/
if (paned->last_allocation > 0)
{
if (paned->child1_resize && !paned->child2_resize)
paned->child1_size += allocation - paned->last_allocation;
else if (!(!paned->child1_resize && paned->child2_resize))
paned->child1_size = allocation * ((gdouble) paned->child1_size / (paned->last_allocation));
}
}
paned->child1_size = CLAMP (paned->child1_size,
paned->min_position,
paned->max_position);
gtk_widget_set_child_visible (paned->child1, paned->child1_size != 0);
gtk_widget_set_child_visible (paned->child2, paned->child1_size != allocation);
if (paned->child1_size != old_position)
g_object_notify (G_OBJECT (paned), "position");
paned->last_allocation = allocation;
}
static void
gtk_paned_set_saved_focus (GtkPaned *paned, GtkWidget *widget)
{
if (paned->priv->saved_focus)
g_object_remove_weak_pointer (G_OBJECT (paned->priv->saved_focus),
(gpointer *)&(paned->priv->saved_focus));
paned->priv->saved_focus = widget;
if (paned->priv->saved_focus)
g_object_add_weak_pointer (G_OBJECT (paned->priv->saved_focus),
(gpointer *)&(paned->priv->saved_focus));
}
static void
gtk_paned_set_first_paned (GtkPaned *paned, GtkPaned *first_paned)
{
if (paned->priv->first_paned)
g_object_remove_weak_pointer (G_OBJECT (paned->priv->first_paned),
(gpointer *)&(paned->priv->first_paned));
paned->priv->first_paned = first_paned;
if (paned->priv->first_paned)
g_object_add_weak_pointer (G_OBJECT (paned->priv->first_paned),
(gpointer *)&(paned->priv->first_paned));
}
static void
gtk_paned_set_last_child1_focus (GtkPaned *paned, GtkWidget *widget)
{
if (paned->last_child1_focus)
g_object_remove_weak_pointer (G_OBJECT (paned->last_child1_focus),
(gpointer *)&(paned->last_child1_focus));
paned->last_child1_focus = widget;
if (paned->last_child1_focus)
g_object_add_weak_pointer (G_OBJECT (paned->last_child1_focus),
(gpointer *)&(paned->last_child1_focus));
}
static void
gtk_paned_set_last_child2_focus (GtkPaned *paned, GtkWidget *widget)
{
if (paned->last_child2_focus)
g_object_remove_weak_pointer (G_OBJECT (paned->last_child2_focus),
(gpointer *)&(paned->last_child2_focus));
paned->last_child2_focus = widget;
if (paned->last_child2_focus)
g_object_add_weak_pointer (G_OBJECT (paned->last_child2_focus),
(gpointer *)&(paned->last_child2_focus));
}
static GtkWidget *
paned_get_focus_widget (GtkPaned *paned)
{
GtkWidget *toplevel;
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (paned));
if (GTK_WIDGET_TOPLEVEL (toplevel))
return GTK_WINDOW (toplevel)->focus_widget;
return NULL;
}
static void
gtk_paned_set_focus_child (GtkContainer *container,
GtkWidget *focus_child)
{
GtkPaned *paned;
g_return_if_fail (GTK_IS_PANED (container));
paned = GTK_PANED (container);
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 = w->parent)
if (GTK_IS_PANED (w))
last_focus = w;
if (container->focus_child == paned->child1)
gtk_paned_set_last_child1_focus (paned, last_focus);
else if (container->focus_child == paned->child2)
gtk_paned_set_last_child2_focus (paned, last_focus);
}
}
if (parent_class->set_focus_child)
(* parent_class->set_focus_child) (container, focus_child);
}
static void
gtk_paned_get_cycle_chain (GtkPaned *paned,
GtkDirectionType direction,
GList **widgets)
{
GtkContainer *container = GTK_CONTAINER (paned);
GtkWidget *ancestor = NULL;
GList *temp_list = NULL;
GList *list;
if (paned->in_recursion)
return;
g_assert (widgets != NULL);
if (paned->last_child1_focus &&
!gtk_widget_is_ancestor (paned->last_child1_focus, GTK_WIDGET (paned)))
{
gtk_paned_set_last_child1_focus (paned, NULL);
}
if (paned->last_child2_focus &&
!gtk_widget_is_ancestor (paned->last_child2_focus, GTK_WIDGET (paned)))
{
gtk_paned_set_last_child2_focus (paned, NULL);
}
if (GTK_WIDGET (paned)->parent)
ancestor = gtk_widget_get_ancestor (GTK_WIDGET (paned)->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
* paned->last_child?_focus before paned->child?, both when we
* are going forward and backward.
*/
if (direction == GTK_DIR_TAB_FORWARD)
{
if (container->focus_child == paned->child1)
{
temp_list = g_list_append (temp_list, paned->last_child2_focus);
temp_list = g_list_append (temp_list, paned->child2);
temp_list = g_list_append (temp_list, ancestor);
}
else if (container->focus_child == paned->child2)
{
temp_list = g_list_append (temp_list, ancestor);
temp_list = g_list_append (temp_list, paned->last_child1_focus);
temp_list = g_list_append (temp_list, paned->child1);
}
else
{
temp_list = g_list_append (temp_list, paned->last_child1_focus);
temp_list = g_list_append (temp_list, paned->child1);
temp_list = g_list_append (temp_list, paned->last_child2_focus);
temp_list = g_list_append (temp_list, paned->child2);
temp_list = g_list_append (temp_list, ancestor);
}
}
else
{
if (container->focus_child == paned->child1)
{
temp_list = g_list_append (temp_list, ancestor);
temp_list = g_list_append (temp_list, paned->last_child2_focus);
temp_list = g_list_append (temp_list, paned->child2);
}
else if (container->focus_child == paned->child2)
{
temp_list = g_list_append (temp_list, paned->last_child1_focus);
temp_list = g_list_append (temp_list, paned->child1);
temp_list = g_list_append (temp_list, ancestor);
}
else
{
temp_list = g_list_append (temp_list, paned->last_child2_focus);
temp_list = g_list_append (temp_list, paned->child2);
temp_list = g_list_append (temp_list, paned->last_child1_focus);
temp_list = g_list_append (temp_list, paned->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))
{
paned->in_recursion = TRUE;
gtk_paned_get_cycle_chain (GTK_PANED (widget), direction, widgets);
paned->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 (GTK_IS_PANED (widget))
{
GtkPaned *paned = GTK_PANED (widget);
get_child_panes (paned->child1, panes);
*panes = g_list_prepend (*panes, widget);
get_child_panes (paned->child2, panes);
}
else if (GTK_IS_CONTAINER (widget))
{
gtk_container_foreach (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 = w->parent)
{
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)
{
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
gint old_position;
gint new_position;
enum {
SINGLE_STEP_SIZE = 1,
PAGE_STEP_SIZE = 75
};
old_position = gtk_paned_get_position (paned);
switch (scroll)
{
case GTK_SCROLL_STEP_LEFT:
case GTK_SCROLL_STEP_UP:
case GTK_SCROLL_STEP_BACKWARD:
new_position = old_position - SINGLE_STEP_SIZE;
break;
case GTK_SCROLL_STEP_RIGHT:
case GTK_SCROLL_STEP_DOWN:
case GTK_SCROLL_STEP_FORWARD:
new_position = old_position + SINGLE_STEP_SIZE;
break;
case GTK_SCROLL_PAGE_LEFT:
case GTK_SCROLL_PAGE_UP:
case GTK_SCROLL_PAGE_BACKWARD:
new_position = old_position - PAGE_STEP_SIZE;
break;
case GTK_SCROLL_PAGE_RIGHT:
case GTK_SCROLL_PAGE_DOWN:
case GTK_SCROLL_PAGE_FORWARD:
new_position = old_position + PAGE_STEP_SIZE;
break;
case GTK_SCROLL_START:
new_position = paned->min_position;
break;
case GTK_SCROLL_END:
new_position = paned->max_position;
break;
default:
new_position = old_position;
break;
}
new_position = CLAMP (new_position, paned->min_position, paned->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)
{
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
if (paned->priv->saved_focus &&
GTK_WIDGET_SENSITIVE (paned->priv->saved_focus))
{
gtk_widget_grab_focus (paned->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)
{
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
paned->original_position = -1;
gtk_paned_restore_focus (paned);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_cancel_position (GtkPaned *paned)
{
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
if (paned->original_position != -1)
{
gtk_paned_set_position (paned, paned->original_position);
paned->original_position = -1;
}
gtk_paned_restore_focus (paned);
return TRUE;
}
return FALSE;
}
static gboolean
gtk_paned_cycle_handle_focus (GtkPaned *paned,
gboolean reversed)
{
GtkPaned *next, *prev;
if (gtk_widget_is_focus (GTK_WIDGET (paned)))
{
GtkPaned *focus = NULL;
if (!paned->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 != paned->priv->first_paned)
{
focus = prev;
}
else if (!reversed && next &&
next != paned && next != paned->priv->first_paned)
{
focus = next;
}
else
{
gtk_paned_accept_position (paned);
return TRUE;
}
g_assert (focus);
gtk_paned_set_saved_focus (focus, paned->priv->saved_focus);
gtk_paned_set_first_paned (focus, paned->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)))
{
paned->original_position = -1;
focus->original_position = gtk_paned_get_position (focus);
}
}
else
{
GtkContainer *container = GTK_CONTAINER (paned);
GtkPaned *focus;
GtkPaned *first;
GtkPaned *prev, *next;
GtkWidget *toplevel;
gtk_paned_find_neighbours (paned, &next, &prev);
if (container->focus_child == paned->child1)
{
if (reversed)
{
focus = prev;
first = paned;
}
else
{
focus = paned;
first = paned;
}
}
else if (container->focus_child == paned->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 (toplevel)->focus_widget);
gtk_paned_set_first_paned (focus, first);
focus->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;
}
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