diff options
author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-09-17 18:18:44 +0000 |
---|---|---|
committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-09-17 18:18:44 +0000 |
commit | 57623d42ebb04f0a0b9e6eb7c0847a3ece2aa0ff (patch) | |
tree | 25d07d14e920d31c0b1947c9ca586f2a01fc32d8 /nuttx/graphics/nxtk/nxtk_bitmapwindow.c | |
download | px4-firmware-57623d42ebb04f0a0b9e6eb7c0847a3ece2aa0ff.tar.gz px4-firmware-57623d42ebb04f0a0b9e6eb7c0847a3ece2aa0ff.tar.bz2 px4-firmware-57623d42ebb04f0a0b9e6eb7c0847a3ece2aa0ff.zip |
Resync new repository with old repo r5166
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/graphics/nxtk/nxtk_bitmapwindow.c')
-rw-r--r-- | nuttx/graphics/nxtk/nxtk_bitmapwindow.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/nuttx/graphics/nxtk/nxtk_bitmapwindow.c b/nuttx/graphics/nxtk/nxtk_bitmapwindow.c new file mode 100644 index 000000000..6847c44d4 --- /dev/null +++ b/nuttx/graphics/nxtk/nxtk_bitmapwindow.c @@ -0,0 +1,137 @@ +/**************************************************************************** + * 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; +} |