/*
 * Copyright © 2008 Intel Corporation
 * Copyright © 1998 Keith Packard
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include "glamor_priv.h"

/** @file glamor_window.c
 *
 * Screen Change Window Attribute implementation.
 */


static void
glamor_fixup_window_pixmap(DrawablePtr pDrawable, PixmapPtr * ppPixmap)
{
	PixmapPtr pPixmap = *ppPixmap;
	glamor_pixmap_private *pixmap_priv;

	if (pPixmap->drawable.bitsPerPixel != pDrawable->bitsPerPixel) {
		pixmap_priv = glamor_get_pixmap_private(pPixmap);
		if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(pixmap_priv)) {
			glamor_fallback("pixmap %p has no fbo\n", pPixmap);
			goto fail;
		}
		glamor_debug_output(GLAMOR_DEBUG_UNIMPL,
				    "To be implemented.\n");
	}
	return;

      fail:
	GLAMOR_PANIC
	    (" We can't fall back to fbFixupWindowPixmap, as the fb24_32ReformatTile"
	     " is broken for glamor. \n");
}

Bool
glamor_change_window_attributes(WindowPtr pWin, unsigned long mask)
{
	if (mask & CWBackPixmap) {
		if (pWin->backgroundState == BackgroundPixmap)
			glamor_fixup_window_pixmap(&pWin->drawable,
						   &pWin->
						   background.pixmap);
	}

	if (mask & CWBorderPixmap) {
		if (pWin->borderIsPixel == FALSE)
			glamor_fixup_window_pixmap(&pWin->drawable,
						   &pWin->border.pixmap);
	}
	return TRUE;
}

void
glamor_set_window_pixmap(WindowPtr win, PixmapPtr pPixmap)
{
	ScreenPtr screen = win->drawable.pScreen;
	glamor_screen_private *glamor_priv =
		glamor_get_screen_private(screen);
	PixmapPtr old = screen->GetWindowPixmap(win);

	if (pPixmap != old) {
		glamor_pixmap_private *pixmap_priv;
		PicturePtr pic = NULL;

		pixmap_priv = glamor_get_pixmap_private(old);
		if (GLAMOR_PIXMAP_PRIV_IS_PICTURE(pixmap_priv) && pixmap_priv->base.picture->pDrawable == (DrawablePtr)win) {
			pic = pixmap_priv->base.picture;
			pixmap_priv->base.is_picture = 0;
			pixmap_priv->base.picture = NULL;
		}

		pixmap_priv = glamor_get_pixmap_private(pPixmap);
		if (pixmap_priv) {
			pixmap_priv->base.is_picture = !!pic;
			pixmap_priv->base.picture = pic;
		}
	}

	screen->SetWindowPixmap = glamor_priv->saved_procs.set_window_pixmap;
	(screen->SetWindowPixmap)(win, pPixmap);
	glamor_priv->saved_procs.set_window_pixmap = screen->SetWindowPixmap;
	screen->SetWindowPixmap = glamor_set_window_pixmap;
}
