gtk2/gdk/win32/gdkgeometry-win32.c

207 lines
6.1 KiB
C

/* GDK - The GIMP Drawing Kit
* 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.
*/
/* gdkgeometry-win32.c: emulation of 32 bit coordinates within the
* limits of Win32 GDI. The idea of big window emulation is more or less
* a copy of the X11 version, and the equvalent of guffaw scrolling
* is ScrollWindowEx(). While we determine the invalidated region
* ourself during scrolling, we do not pass SW_INVALIDATE to
* ScrollWindowEx() to avoid a unnecessary WM_PAINT.
*
* Bits are always scrolled correctly by ScrollWindowEx(), but
* some big children may hit the coordinate boundary (i.e.
* win32_x/win32_y < -16383) after scrolling. They needed to be moved
* back to the real position determined by gdk_window_compute_position().
* This is handled in gdk_window_postmove().
*
* The X11 version by Owen Taylor <otaylor@redhat.com>
* Copyright Red Hat, Inc. 2000
* Win32 hack by Tor Lillqvist <tml@iki.fi>
* and Hans Breuer <hans@breuer.org>
* Modified by Ivan, Wong Yat Cheung <email@ivanwong.info>
* so that big window emulation finally works.
*/
#include "config.h"
#include "gdk.h" /* For gdk_rectangle_intersect */
#include "gdkregion.h"
#include "gdkregion-generic.h"
#include "gdkinternals.h"
#include "gdkprivate-win32.h"
#define SIZE_LIMIT 32767
typedef struct _GdkWindowParentPos GdkWindowParentPos;
void
_gdk_window_move_resize_child (GdkWindow *window,
gint x,
gint y,
gint width,
gint height)
{
GdkWindowImplWin32 *impl;
GdkWindowObject *obj;
gboolean is_move;
gboolean is_resize;
g_return_if_fail (window != NULL);
g_return_if_fail (GDK_IS_WINDOW (window));
obj = GDK_WINDOW_OBJECT (window);
impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
is_move = (x - obj->x != 0) && (y - obj->y != 0);
is_resize = obj->width != width && obj->height != height;
GDK_NOTE (MISC, g_print ("_gdk_window_move_resize_child: %s@%+d%+d %dx%d@%+d%+d\n",
_gdk_win32_drawable_description (window),
obj->x, obj->y, width, height, x, y));
if (width > 65535 || height > 65535)
{
g_warning ("Native children wider or taller than 65535 pixels are not supported.");
if (width > 65535)
width = 65535;
if (height > 65535)
height = 65535;
}
obj->x = x;
obj->y = y;
obj->width = width;
obj->height = height;
GDK_NOTE (MISC, g_print ("... SetWindowPos(%p,NULL,%d,%d,%d,%d,"
"NOACTIVATE|NOZORDER%s%s)\n",
GDK_WINDOW_HWND (window),
obj->x + obj->parent->abs_x, obj->y + obj->parent->abs_y,
width, height,
(is_move ? "" : "|NOMOVE"),
(is_resize ? "" : "|NOSIZE")));
API_CALL (SetWindowPos, (GDK_WINDOW_HWND (window), NULL,
obj->x + obj->parent->abs_x, obj->y + obj->parent->abs_y,
width, height,
SWP_NOACTIVATE | SWP_NOZORDER |
(is_move ? 0 : SWP_NOMOVE) |
(is_resize ? 0 : SWP_NOSIZE)));
}
void
_gdk_window_process_expose (GdkWindow *window,
GdkRegion *invalidate_region)
{
GdkWindowImplWin32 *impl;
GdkRegion *clip_region;
impl = GDK_WINDOW_IMPL_WIN32 (GDK_WINDOW_OBJECT (window)->impl);
GDK_NOTE (EVENTS, g_print ("_gdk_window_process_expose: %p %s\n",
GDK_WINDOW_HWND (window),
_gdk_win32_gdkregion_to_string (invalidate_region)));
if (!gdk_region_empty (invalidate_region))
_gdk_window_invalidate_for_expose (window, invalidate_region);
gdk_region_destroy (clip_region);
}
static void
gdk_window_tmp_unset_bg (GdkWindow *window)
{
GdkWindowImplWin32 *impl;
GdkWindowObject *obj;
obj = (GdkWindowObject *) window;
impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
impl->no_bg = TRUE;
/*
* The X version sets background = None to avoid updateing for a moment.
* Not sure if this could really emulate it.
*/
if (obj->bg_pixmap != GDK_NO_BG)
/* handled in WM_ERASEBKGRND proceesing */;
}
static void
gdk_window_tmp_reset_bg (GdkWindow *window)
{
GdkWindowImplWin32 *impl;
GdkWindowObject *obj;
obj = (GdkWindowObject *) window;
impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
impl->no_bg = FALSE;
}
static GdkRegion *
gdk_window_clip_changed (GdkWindow *window,
GdkRectangle *old_clip,
GdkRectangle *new_clip)
{
GdkWindowImplWin32 *impl;
GdkWindowObject *obj;
GdkRegion *old_clip_region;
GdkRegion *new_clip_region;
if (((GdkWindowObject *)window)->input_only)
return NULL;
obj = (GdkWindowObject *) window;
impl = GDK_WINDOW_IMPL_WIN32 (obj->impl);
old_clip_region = gdk_region_rectangle (old_clip);
new_clip_region = gdk_region_rectangle (new_clip);
/* Trim invalid region of window to new clip rectangle
*/
if (obj->update_area)
gdk_region_intersect (obj->update_area, new_clip_region);
/* Invalidate newly exposed portion of window
*/
gdk_region_subtract (new_clip_region, old_clip_region);
if (!gdk_region_empty (new_clip_region))
gdk_window_tmp_unset_bg (window);
else
{
gdk_region_destroy (new_clip_region);
new_clip_region = NULL;
}
gdk_region_destroy (old_clip_region);
return new_clip_region;
}
static void
gdk_window_post_scroll (GdkWindow *window,
GdkRegion *new_clip_region)
{
GDK_NOTE (EVENTS,
g_print ("gdk_window_clip_changed: invalidating region: %s\n",
_gdk_win32_gdkregion_to_string (new_clip_region)));
gdk_window_invalidate_region (window, new_clip_region, FALSE);
gdk_region_destroy (new_clip_region);
}