px4-firmware/nuttx/graphics/nxtk/nxtk_bitmaptoolbar.c

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/****************************************************************************
* graphics/nxtk/nxtk_bitmaptoolbar.c
*
* Copyright (C) 2008-2009, 2012 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/nx.h>
#include <nuttx/nx/nxtk.h>
#include "nxtk_internal.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxtk_bitmaptoolbar
*
* Description:
* Copy a rectangular region of a larger image into the rectangle in the
* specified toolbar sub-window.
*
* Input Parameters:
* hfwnd - The sub-window twhose toolbar will receive the bitmap image
* dest - Describes the rectangular region on in the toolbar 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_bitmaptoolbar(NXTKWINDOW hfwnd, FAR const struct nxgl_rect_s *dest,
FAR const void *src[CONFIG_NX_NPLANES],
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->tbrect);
/* 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->tbrect.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;
}