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gtk2/gtk/gtkhandlebox.c
Tim Janik 995d97b001 major overhaul of the code, fixed all known bugs (hopefully ;). 
Sat Mar 21 22:54:31 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkhandlebox.h:
        * gtk/gtkhandlebox.c: major overhaul of the code, fixed all
        known bugs (hopefully ;).

Sat Mar 20 15:33:17 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkwidget.c (gtk_widget_real_show): queue the resize for the
        parent.

Thu Mar 19 02:00:50 1998  Tim Janik  <timj@gtk.org>

        * gtk/gtkwidget.c (gtk_widget_unrealize): unset flags after emission,
        especially GTK_MAPPED, since that might not have been taken care of
        by an UNMAP emission.
1998-03-21 22:11:26 +00:00

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/* GTK - The GIMP Toolkit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
* Copyright (C) 1998 Elliot Lee
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdlib.h>
#include "gdk/gdkx.h"
#include "gtkhandlebox.h"
#include "gtkmain.h"
#include "gtksignal.h"
#include "gtkwindow.h"
#define DRAG_HANDLE_SIZE 10
#define CHILDLESS_SIZE 25
#define GHOST_HEIGHT 3
enum
{
SIGNAL_CHILD_ATTACHED,
SIGNAL_CHILD_DETACHED,
SIGNAL_LAST
};
typedef void (*SignalChildAttached) (GtkObject *object,
GtkWidget *widget,
gpointer func_data);
static void gtk_handle_box_class_init (GtkHandleBoxClass *klass);
static void gtk_handle_box_init (GtkHandleBox *handle_box);
static void gtk_handle_box_destroy (GtkObject *object);
static void gtk_handle_box_map (GtkWidget *widget);
static void gtk_handle_box_unmap (GtkWidget *widget);
static void gtk_handle_box_realize (GtkWidget *widget);
static void gtk_handle_box_unrealize (GtkWidget *widget);
static void gtk_handle_box_size_request (GtkWidget *widget,
GtkRequisition *requisition);
static void gtk_handle_box_size_allocate (GtkWidget *widget,
GtkAllocation *real_allocation);
static void gtk_handle_box_add (GtkContainer *container,
GtkWidget *widget);
static void gtk_handle_box_remove (GtkContainer *container,
GtkWidget *widget);
static void gtk_handle_box_draw_ghost (GtkHandleBox *hb);
static void gtk_handle_box_paint (GtkWidget *widget,
GdkEventExpose *event,
GdkRectangle *area);
static void gtk_handle_box_draw (GtkWidget *widget,
GdkRectangle *area);
static gint gtk_handle_box_expose (GtkWidget *widget,
GdkEventExpose *event);
static gint gtk_handle_box_button_changed (GtkWidget *widget,
GdkEventButton *event);
static gint gtk_handle_box_motion (GtkWidget *widget,
GdkEventMotion *event);
static gint gtk_handle_box_delete_event (GtkWidget *widget,
GdkEventAny *event);
static GtkBinClass *parent_class;
static guint handle_box_signals[SIGNAL_LAST] = { 0 };
guint
gtk_handle_box_get_type (void)
{
static guint handle_box_type = 0;
if (!handle_box_type)
{
GtkTypeInfo handle_box_info =
{
"GtkHandleBox",
sizeof (GtkHandleBox),
sizeof (GtkHandleBoxClass),
(GtkClassInitFunc) gtk_handle_box_class_init,
(GtkObjectInitFunc) gtk_handle_box_init,
(GtkArgSetFunc) NULL,
(GtkArgGetFunc) NULL,
};
handle_box_type = gtk_type_unique (gtk_bin_get_type (), &handle_box_info);
}
return handle_box_type;
}
static void
gtk_handle_box_marshal_child_attached (GtkObject *object,
GtkSignalFunc func,
gpointer func_data,
GtkArg *args)
{
SignalChildAttached sfunc = (SignalChildAttached) func;
(* sfunc) (object,
(GtkWidget*) GTK_VALUE_OBJECT (args[0]),
func_data);
}
static void
gtk_handle_box_class_init (GtkHandleBoxClass *class)
{
GtkObjectClass *object_class;
GtkWidgetClass *widget_class;
GtkContainerClass *container_class;
object_class = (GtkObjectClass *) class;
widget_class = (GtkWidgetClass *) class;
container_class = (GtkContainerClass *) class;
parent_class = gtk_type_class (gtk_bin_get_type ());
handle_box_signals[SIGNAL_CHILD_ATTACHED] =
gtk_signal_new ("child_attached",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_attached),
gtk_handle_box_marshal_child_attached,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
handle_box_signals[SIGNAL_CHILD_DETACHED] =
gtk_signal_new ("child_detached",
GTK_RUN_FIRST,
object_class->type,
GTK_SIGNAL_OFFSET (GtkHandleBoxClass, child_detached),
gtk_handle_box_marshal_child_attached,
GTK_TYPE_NONE, 1,
GTK_TYPE_WIDGET);
gtk_object_class_add_signals (object_class, handle_box_signals, SIGNAL_LAST);
object_class->destroy = gtk_handle_box_destroy;
widget_class->map = gtk_handle_box_map;
widget_class->unmap = gtk_handle_box_unmap;
widget_class->realize = gtk_handle_box_realize;
widget_class->unrealize = gtk_handle_box_unrealize;
widget_class->size_request = gtk_handle_box_size_request;
widget_class->size_allocate = gtk_handle_box_size_allocate;
widget_class->draw = gtk_handle_box_draw;
widget_class->expose_event = gtk_handle_box_expose;
widget_class->button_press_event = gtk_handle_box_button_changed;
widget_class->button_release_event = gtk_handle_box_button_changed;
widget_class->motion_notify_event = gtk_handle_box_motion;
widget_class->delete_event = gtk_handle_box_delete_event;
container_class->add = gtk_handle_box_add;
container_class->remove = gtk_handle_box_remove;
class->child_attached = NULL;
class->child_detached = NULL;
}
static void
gtk_handle_box_init (GtkHandleBox *handle_box)
{
GTK_WIDGET_UNSET_FLAGS (handle_box, GTK_NO_WINDOW);
GTK_WIDGET_SET_FLAGS (handle_box, GTK_BASIC); /* FIXME: are we really a basic widget? */
handle_box->bin_window = NULL;
handle_box->float_window = NULL;
handle_box->handle_position = GTK_POS_LEFT;
handle_box->float_window_mapped = FALSE;
handle_box->child_detached = FALSE;
handle_box->in_drag = FALSE;
handle_box->fleur_cursor = gdk_cursor_new (GDK_FLEUR);
handle_box->dragoff_x = 0;
handle_box->dragoff_y = 0;
}
GtkWidget*
gtk_handle_box_new (void)
{
return GTK_WIDGET (gtk_type_new (gtk_handle_box_get_type ()));
}
static void
gtk_handle_box_destroy (GtkObject *object)
{
GtkHandleBox *hb;
g_return_if_fail (object != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (object));
hb = GTK_HANDLE_BOX (object);
if (GTK_OBJECT_CLASS (parent_class)->destroy)
(* GTK_OBJECT_CLASS (parent_class)->destroy) (object);
}
static void
gtk_handle_box_map (GtkWidget *widget)
{
GtkBin *bin;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
GTK_WIDGET_SET_FLAGS (widget, GTK_MAPPED);
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
gdk_window_show (hb->bin_window);
gdk_window_show (widget->window);
if (hb->child_detached && !hb->float_window_mapped)
{
gdk_window_show (hb->float_window);
hb->float_window_mapped = TRUE;
}
if (bin->child &&
GTK_WIDGET_VISIBLE (bin->child) &&
!GTK_WIDGET_MAPPED (bin->child))
gtk_widget_map (bin->child);
}
static void
gtk_handle_box_unmap (GtkWidget *widget)
{
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
GTK_WIDGET_UNSET_FLAGS (widget, GTK_MAPPED);
hb = GTK_HANDLE_BOX (widget);
gdk_window_hide (widget->window);
if (hb->float_window_mapped)
{
gdk_window_hide (hb->float_window);
hb->float_window_mapped = FALSE;
}
}
static void
gtk_handle_box_realize (GtkWidget *widget)
{
GdkWindowAttr attributes;
gint attributes_mask;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
hb = GTK_HANDLE_BOX (widget);
GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED);
attributes.x = widget->allocation.x;
attributes.y = widget->allocation.y;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = (gtk_widget_get_events (widget)
| GDK_EXPOSURE_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attributes, attributes_mask);
gdk_window_set_user_data (widget->window, widget);
attributes.x = 0;
attributes.y = 0;
attributes.width = widget->allocation.width;
attributes.height = widget->allocation.height;
attributes.window_type = GDK_WINDOW_CHILD;
attributes.event_mask |= (gtk_widget_get_events (widget) |
GDK_EXPOSURE_MASK |
GDK_BUTTON1_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
hb->bin_window = gdk_window_new (widget->window, &attributes, attributes_mask);
gdk_window_set_user_data (hb->bin_window, widget);
if (GTK_BIN (hb)->child)
gtk_widget_set_parent_window (GTK_BIN (hb)->child, hb->bin_window);
attributes.x = 0;
attributes.y = 0;
attributes.width = widget->requisition.width;
attributes.height = widget->requisition.height;
attributes.window_type = GDK_WINDOW_TOPLEVEL;
attributes.wclass = GDK_INPUT_OUTPUT;
attributes.visual = gtk_widget_get_visual (widget);
attributes.colormap = gtk_widget_get_colormap (widget);
attributes.event_mask = (gtk_widget_get_events (widget) |
GDK_KEY_PRESS_MASK |
GDK_ENTER_NOTIFY_MASK |
GDK_LEAVE_NOTIFY_MASK |
GDK_FOCUS_CHANGE_MASK |
GDK_STRUCTURE_MASK);
attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP;
hb->float_window = gdk_window_new (NULL, &attributes, attributes_mask);
gdk_window_set_user_data (hb->float_window, widget);
gdk_window_set_decorations (hb->float_window, 0);
widget->style = gtk_style_attach (widget->style, widget->window);
gtk_style_set_background (widget->style, widget->window, GTK_WIDGET_STATE (hb));
gtk_style_set_background (widget->style, hb->bin_window, GTK_WIDGET_STATE (hb));
gtk_style_set_background (widget->style, hb->float_window, GTK_WIDGET_STATE (hb));
}
static void
gtk_handle_box_unrealize (GtkWidget *widget)
{
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
hb = GTK_HANDLE_BOX (widget);
gdk_window_set_user_data (hb->bin_window, NULL);
gdk_window_destroy (hb->bin_window);
hb->bin_window = NULL;
gdk_window_set_user_data (hb->float_window, NULL);
gdk_window_destroy (hb->float_window);
hb->float_window = NULL;
gdk_cursor_destroy (hb->fleur_cursor);
hb->fleur_cursor = NULL;
if (GTK_WIDGET_CLASS (parent_class)->unrealize)
(* GTK_WIDGET_CLASS (parent_class)->unrealize) (widget);
}
static void
gtk_handle_box_size_request (GtkWidget *widget,
GtkRequisition *requisition)
{
GtkBin *bin;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
g_return_if_fail (requisition != NULL);
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
{
requisition->width = DRAG_HANDLE_SIZE;
requisition->height = 0;
}
else
{
requisition->width = 0;
requisition->height = DRAG_HANDLE_SIZE;
}
requisition->width += GTK_CONTAINER (widget)->border_width * 2;
requisition->height += GTK_CONTAINER (widget)->border_width * 2;
/* if our child is not visible, we still request its size, since we
* won't have any usefull hint for our size otherwise.
*/
if (bin->child)
gtk_widget_size_request (bin->child, &bin->child->requisition);
if (hb->child_detached)
{
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
requisition->height += bin->child->requisition.height;
else
requisition->width += bin->child->requisition.width;
}
else if (bin->child)
{
requisition->width += bin->child->requisition.width;
requisition->height += bin->child->requisition.height;
}
else
{
requisition->width += CHILDLESS_SIZE;
requisition->height += CHILDLESS_SIZE;
}
}
static void
gtk_handle_box_size_allocate (GtkWidget *widget,
GtkAllocation *allocation)
{
GtkBin *bin;
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
g_return_if_fail (allocation != NULL);
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
widget->allocation.x = allocation->x;
if (allocation->height > widget->requisition.height)
widget->allocation.y = allocation->y + (allocation->height - widget->requisition.height) / 2;
else
widget->allocation.y = allocation->y;
widget->allocation.height = MIN (allocation->height, widget->requisition.height);
widget->allocation.width = MIN (allocation->width, widget->requisition.width);
if (GTK_WIDGET_REALIZED (hb))
gdk_window_move_resize (widget->window,
widget->allocation.x,
widget->allocation.y,
widget->allocation.width,
widget->allocation.height);
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GtkWidget *child;
GtkAllocation child_allocation;
guint border_width;
child = bin->child;
border_width = GTK_CONTAINER (widget)->border_width;
child_allocation.x = border_width;
child_allocation.y = border_width;
if (hb->handle_position == GTK_POS_LEFT)
child_allocation.x += DRAG_HANDLE_SIZE;
else if (hb->handle_position == GTK_POS_TOP)
child_allocation.y += DRAG_HANDLE_SIZE;
if (hb->child_detached)
{
guint float_width;
guint float_height;
child_allocation.width = child->requisition.width;
child_allocation.height = child->requisition.height;
float_width = child_allocation.width + 2 * border_width;
float_height = child_allocation.height + 2 * border_width;
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
float_width += DRAG_HANDLE_SIZE;
else
float_height += DRAG_HANDLE_SIZE;
if (GTK_WIDGET_REALIZED (hb))
{
gdk_window_resize (hb->float_window,
float_width,
float_height);
gdk_window_move_resize (hb->bin_window,
0,
0,
float_width,
float_height);
}
}
else
{
child_allocation.width = widget->allocation.width - 2 * border_width;
child_allocation.height = widget->allocation.height - 2 * border_width;
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
child_allocation.width -= DRAG_HANDLE_SIZE;
else
child_allocation.height -= DRAG_HANDLE_SIZE;
if (GTK_WIDGET_REALIZED (hb))
gdk_window_move_resize (hb->bin_window,
0,
0,
widget->allocation.width,
widget->allocation.height);
}
gtk_widget_size_allocate (bin->child, &child_allocation);
}
}
static void
gtk_handle_box_draw_ghost (GtkHandleBox *hb)
{
GtkWidget *widget;
guint x;
guint y;
guint width;
guint height;
widget = GTK_WIDGET (hb);
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
{
x = hb->handle_position == GTK_POS_LEFT ? 0 : widget->allocation.width;
y = 0;
width = DRAG_HANDLE_SIZE;
height = widget->allocation.height;
}
else
{
x = 0;
y = hb->handle_position == GTK_POS_TOP ? 0 : widget->allocation.height;
width = widget->allocation.width;
height = DRAG_HANDLE_SIZE;
}
gtk_draw_shadow (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
GTK_SHADOW_ETCHED_IN,
x,
y,
width,
height);
/*
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
gtk_draw_hline (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : widget->allocation.width - DRAG_HANDLE_SIZE,
widget->allocation.width - DRAG_HANDLE_SIZE,
widget->allocation.height / 2);
else
gtk_draw_vline (widget->style,
widget->window,
GTK_WIDGET_STATE (widget),
hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : widget->allocation.height - DRAG_HANDLE_SIZE,
widget->allocation.height - DRAG_HANDLE_SIZE,
widget->allocation.width / 2);
*/
}
static void
gtk_handle_box_paint (GtkWidget *widget,
GdkEventExpose *event,
GdkRectangle *area)
{
GtkBin *bin;
GtkHandleBox *hb;
guint width;
guint height;
guint border_width;
bin = GTK_BIN (widget);
hb = GTK_HANDLE_BOX (widget);
border_width = GTK_CONTAINER (hb)->border_width;
if (hb->child_detached)
{
width = bin->child->allocation.width + 2 * border_width;
height = bin->child->allocation.height + 2 * border_width;
}
else if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
{
width = widget->allocation.width - DRAG_HANDLE_SIZE;
height = widget->allocation.height;
}
else
{
width = widget->allocation.width;
height = widget->allocation.height - DRAG_HANDLE_SIZE;
}
gdk_window_clear (hb->bin_window);
gtk_draw_shadow (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
GTK_SHADOW_OUT,
hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : 0,
hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : 0,
width,
height);
if (hb->handle_position == GTK_POS_LEFT ||
hb->handle_position == GTK_POS_RIGHT)
{
guint x;
for (x = 1; x < DRAG_HANDLE_SIZE; x += 3)
gtk_draw_vline (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
widget->style->klass->ythickness,
height + DRAG_HANDLE_SIZE - widget->style->klass->ythickness,
hb->handle_position == GTK_POS_LEFT ? x : width + x);
gtk_draw_hline (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : width,
hb->handle_position == GTK_POS_LEFT ? 0 : width + DRAG_HANDLE_SIZE,
0);
gtk_draw_hline (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
hb->handle_position == GTK_POS_LEFT ? DRAG_HANDLE_SIZE : width,
hb->handle_position == GTK_POS_LEFT ? 0 : width + DRAG_HANDLE_SIZE,
height - widget->style->klass->ythickness);
}
else
{
guint y;
for (y = 1; y < DRAG_HANDLE_SIZE; y += 3)
gtk_draw_hline (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
widget->style->klass->xthickness,
width + DRAG_HANDLE_SIZE - widget->style->klass->xthickness,
hb->handle_position == GTK_POS_TOP ? y : height + y);
gtk_draw_vline (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : height,
hb->handle_position == GTK_POS_TOP ? 0 : height + DRAG_HANDLE_SIZE,
0);
gtk_draw_vline (widget->style,
hb->bin_window,
GTK_WIDGET_STATE (widget),
hb->handle_position == GTK_POS_TOP ? DRAG_HANDLE_SIZE : height,
hb->handle_position == GTK_POS_TOP ? 0 : height + DRAG_HANDLE_SIZE,
width - widget->style->klass->xthickness);
}
if (bin->child && GTK_WIDGET_VISIBLE (bin->child))
{
GdkRectangle child_area;
GdkEventExpose child_event;
if (!event) /* we were called from draw() */
{
if (gtk_widget_intersect (bin->child, area, &child_area))
gtk_widget_draw (bin->child, &child_area);
}
else /* we were called from expose() */
{
child_event = *event;
if (GTK_WIDGET_NO_WINDOW (bin->child) &&
gtk_widget_intersect (bin->child, &event->area, &child_event.area))
gtk_widget_event (bin->child, (GdkEvent *) &child_event);
}
}
}
static void
gtk_handle_box_draw (GtkWidget *widget,
GdkRectangle *area)
{
GtkHandleBox *hb;
g_return_if_fail (widget != NULL);
g_return_if_fail (GTK_IS_HANDLE_BOX (widget));
g_return_if_fail (area != NULL);
hb = GTK_HANDLE_BOX (widget);
if (GTK_WIDGET_DRAWABLE (widget))
{
if (hb->child_detached)
{
/* The area parameter does not make sense in this case, so we
* repaint everything.
*/
gtk_handle_box_draw_ghost (hb);
area->x = 0;
area->y = 0;
area->width = 2 * GTK_CONTAINER (hb)->border_width + DRAG_HANDLE_SIZE;
area->height = area->width + GTK_BIN (hb)->child->allocation.height;
area->width += GTK_BIN (hb)->child->allocation.width;
gtk_handle_box_paint (widget, NULL, area);
}
else
gtk_handle_box_paint (widget, NULL, area);
}
}
static gint
gtk_handle_box_expose (GtkWidget *widget,
GdkEventExpose *event)
{
GtkHandleBox *hb;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
if (GTK_WIDGET_DRAWABLE (widget))
{
hb = GTK_HANDLE_BOX (widget);
if (event->window == widget->window)
{
if (hb->child_detached)
gtk_handle_box_draw_ghost (hb);
}
else
gtk_handle_box_paint (widget, event, NULL);
}
return FALSE;
}
static gint
gtk_handle_box_button_changed (GtkWidget *widget,
GdkEventButton *event)
{
GtkHandleBox *hb;
gboolean event_handled;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
hb = GTK_HANDLE_BOX (widget);
event_handled = FALSE;
if (event->button == 1 &&
event->type == GDK_BUTTON_PRESS)
{
GtkWidget *child;
gboolean in_handle;
child = GTK_BIN (hb)->child;
switch (hb->handle_position)
{
case GTK_POS_LEFT:
in_handle = event->x < DRAG_HANDLE_SIZE;
break;
case GTK_POS_TOP:
in_handle = event->y < DRAG_HANDLE_SIZE;
break;
case GTK_POS_RIGHT:
in_handle = event->x > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.width;
break;
case GTK_POS_BOTTOM:
in_handle = event->y > 2 * GTK_CONTAINER (hb)->border_width + child->allocation.height;
break;
default:
in_handle = FALSE;
break;
}
if (!child)
{
in_handle = FALSE;
event_handled = TRUE;
}
if (in_handle)
{
hb->dragoff_x = event->x;
hb->dragoff_y = event->y;
gtk_grab_add (widget);
hb->in_drag = TRUE;
while (gdk_pointer_grab (hb->bin_window,
FALSE,
(GDK_BUTTON1_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL,
hb->fleur_cursor,
GDK_CURRENT_TIME) != 0); /* wait for success */
event_handled = TRUE;
}
}
else if (event->type == GDK_BUTTON_RELEASE &&
hb->in_drag)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_grab_remove (widget);
hb->in_drag = FALSE;
event_handled = TRUE;
}
return event_handled;
}
static gint
gtk_handle_box_motion (GtkWidget *widget,
GdkEventMotion *event)
{
GtkHandleBox *hb;
gint new_x, new_y;
gint ox, oy;
gint snap_x, snap_y;
gboolean in_handle;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
hb = GTK_HANDLE_BOX (widget);
if (!hb->in_drag)
return FALSE;
ox = 0;
oy = 0;
gdk_window_get_origin (hb->float_window, &ox, &oy);
new_x = 0;
new_y = 0;
gdk_window_get_pointer (hb->float_window, &new_x, &new_y, NULL);
new_x += ox;
new_y += oy;
new_x -= hb->dragoff_x;
new_y -= hb->dragoff_y;
snap_x = 0;
snap_y = 0;
gdk_window_get_pointer (widget->window, &snap_x, &snap_y, NULL);
switch (hb->handle_position)
{
case GTK_POS_LEFT:
in_handle = (snap_x >= 0 && snap_x <= DRAG_HANDLE_SIZE &&
snap_y >= 0 && snap_y <= widget->allocation.height);
break;
case GTK_POS_TOP:
in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
snap_y >= 0 && snap_y <= DRAG_HANDLE_SIZE);
break;
case GTK_POS_RIGHT:
in_handle = (snap_x >= widget->allocation.width - DRAG_HANDLE_SIZE && snap_x <= widget->allocation.width &&
snap_y >= 0 && snap_y <= widget->allocation.height);
break;
case GTK_POS_BOTTOM:
in_handle = (snap_x >= 0 && snap_x <= widget->allocation.width &&
snap_y >= widget->allocation.height - DRAG_HANDLE_SIZE && snap_y <= widget->allocation.height);
break;
default:
in_handle = FALSE;
break;
}
if (in_handle)
{
if (hb->child_detached)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
hb->child_detached = FALSE;
gdk_window_hide (hb->float_window);
gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
hb->float_window_mapped = FALSE;
gtk_signal_emit (GTK_OBJECT (hb),
handle_box_signals[SIGNAL_CHILD_ATTACHED],
GTK_BIN (hb)->child);
while (gdk_pointer_grab (hb->bin_window,
FALSE,
(GDK_BUTTON1_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL,
hb->fleur_cursor,
GDK_CURRENT_TIME) != 0); /* wait for success */
gtk_widget_queue_resize (widget);
}
}
else
{
if (hb->child_detached)
{
gdk_window_move (hb->float_window, new_x, new_y);
gdk_window_raise (hb->float_window);
}
else
{
gint width;
gint height;
gdk_pointer_ungrab (GDK_CURRENT_TIME);
hb->child_detached = TRUE;
width = 0;
height = 0;
gdk_window_get_size (hb->bin_window, &width, &height);
gdk_window_move_resize (hb->float_window, new_x, new_y, width, height);
gdk_window_reparent (hb->bin_window, hb->float_window, 0, 0);
gdk_window_set_hints (hb->float_window, new_x, new_y, 0, 0, 0, 0, GDK_HINT_POS);
gdk_window_show (hb->float_window);
hb->float_window_mapped = TRUE;
#if 0
/* this extra move is neccessary if we use decorations, or our
* window manager insists on decorations.
*/
gdk_flush ();
gdk_window_move (hb->float_window, new_x, new_y);
gdk_flush ();
#endif /* 0 */
gtk_signal_emit (GTK_OBJECT (hb),
handle_box_signals[SIGNAL_CHILD_DETACHED],
GTK_BIN (hb)->child);
gtk_handle_box_draw_ghost (hb);
while (gdk_pointer_grab (hb->bin_window,
FALSE,
(GDK_BUTTON1_MOTION_MASK |
GDK_POINTER_MOTION_HINT_MASK |
GDK_BUTTON_RELEASE_MASK),
NULL,
hb->fleur_cursor,
GDK_CURRENT_TIME) != 0); /* wait for success */
gtk_widget_queue_resize (widget);
}
}
return TRUE;
}
static void
gtk_handle_box_add (GtkContainer *container,
GtkWidget *widget)
{
g_return_if_fail (GTK_IS_HANDLE_BOX (container));
g_return_if_fail (GTK_BIN (container)->child == NULL);
g_return_if_fail (widget->parent == NULL);
gtk_widget_set_parent_window (widget, GTK_HANDLE_BOX (container)->bin_window);
GTK_CONTAINER_CLASS (parent_class)->add (container, widget);
}
static void
gtk_handle_box_remove (GtkContainer *container,
GtkWidget *widget)
{
GtkHandleBox *hb;
g_return_if_fail (GTK_IS_HANDLE_BOX (container));
g_return_if_fail (GTK_BIN (container)->child == widget);
hb = GTK_HANDLE_BOX (container);
if (hb->child_detached)
{
hb->child_detached = FALSE;
if (GTK_WIDGET_REALIZED (hb))
{
gdk_window_hide (hb->float_window);
gdk_window_reparent (hb->bin_window, GTK_WIDGET (hb)->window, 0, 0);
}
hb->float_window_mapped = FALSE;
}
if (hb->in_drag)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_grab_remove (GTK_WIDGET (container));
hb->in_drag = FALSE;
}
GTK_CONTAINER_CLASS (parent_class)->remove (container, widget);
}
static gint
gtk_handle_box_delete_event (GtkWidget *widget,
GdkEventAny *event)
{
GtkHandleBox *hb;
g_return_val_if_fail (widget != NULL, FALSE);
g_return_val_if_fail (GTK_IS_HANDLE_BOX (widget), FALSE);
g_return_val_if_fail (event != NULL, FALSE);
hb = GTK_HANDLE_BOX (widget);
g_return_val_if_fail (event->window == hb->float_window, FALSE);
hb->child_detached = FALSE;
gdk_window_hide (hb->float_window);
gdk_window_reparent (hb->bin_window, widget->window, 0, 0);
hb->float_window_mapped = FALSE;
gtk_signal_emit (GTK_OBJECT (hb),
handle_box_signals[SIGNAL_CHILD_ATTACHED],
GTK_BIN (hb)->child);
if (hb->in_drag)
{
gdk_pointer_ungrab (GDK_CURRENT_TIME);
gtk_grab_remove (widget);
hb->in_drag = FALSE;
}
gtk_widget_queue_resize (GTK_WIDGET (hb));
return TRUE;
}
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