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- /****************************************************************************
- * graphics/nxtk/nxtk_bitmapwindow.c
- *
- * Copyright (C) 2008-2009, 2011 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/nx/nxtk.h>
- #include <nuttx/nx/nx.h>
- #include "nxtk_internal.h"
- /****************************************************************************
- * Pre-Processor Definitions
- ****************************************************************************/
- /****************************************************************************
- * Private Types
- ****************************************************************************/
- /****************************************************************************
- * Private Data
- ****************************************************************************/
- /****************************************************************************
- * Public Data
- ****************************************************************************/
- /****************************************************************************
- * Private Functions
- ****************************************************************************/
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: nxtk_bitmapwindow
- *
- * Description:
- * Copy a rectangular region of a larger image into the rectangle in the
- * specified client sub-window.
- *
- * Input Parameters:
- * hfwnd The client sub0window that will receive the bitmap image
- * dest - Describes the rectangular region on in the client sub-window
- * will receive the bit map.
- * src - The start of the source image.
- * origin - The origin of the upper, left-most corner of the full bitmap.
- * Both dest and origin are in sub-window coordinates, however, the
- * origin may lie outside of the sub-window display.
- * stride - The width of the full source image in pixels.
- *
- * Return:
- * OK on success; ERROR on failure with errno set appropriately
- *
- ****************************************************************************/
- int nxtk_bitmapwindow(NXTKWINDOW hfwnd, FAR const struct nxgl_rect_s *dest,
- FAR const void **src,
- FAR const struct nxgl_point_s *origin, unsigned int stride)
- {
- FAR struct nxtk_framedwindow_s *fwnd = (FAR struct nxtk_framedwindow_s *)hfwnd;
- struct nxgl_point_s wndorigin;
- struct nxgl_rect_s clipdest;
- #ifdef CONFIG_DEBUG
- if (!hfwnd || !dest || !src || !origin)
- {
- errno = EINVAL;
- return ERROR;
- }
- #endif
- /* Clip the rectangle so that it lies within the sub-window bounds
- * then move the rectangle to that it is relative to the containing
- * window.
- */
- nxtk_subwindowclip(fwnd, &clipdest, dest, &fwnd->fwrect);
- /* Now, move the bitmap origin so that it is relative to the containing
- * window, not the sub-window.
- *
- * Temporarily, position the origin in absolute screen coordinates
- */
- nxgl_vectoradd(&wndorigin, origin, &fwnd->fwrect.pt1);
- /* Then move the origin so that is relative to the containing window, not the
- * client subwindow
- */
- nxgl_vectsubtract(&wndorigin, &wndorigin, &fwnd->wnd.bounds.pt1);
- /* Then copy the bitmap */
- nx_bitmap((NXWINDOW)hfwnd, &clipdest, src, &wndorigin, stride);
- return OK;
- }
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