/****************************************************************************
* graphics/nxglib/lcd/nxglib_moverectangle.c
*
* Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 <stdint.h>
#include <nuttx/lcd/lcd.h>
#include <nuttx/nx/nxglib.h>
#include "nxglib_bitblit.h"
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxgl_moverectangle_*bpp
*
* Descripton:
* Move a rectangular region from location to another in the
* LCD memory. The source is expressed as a rectangle; the
* destination position is expressed as a point corresponding to the
* translation of the upper, left-hand corner.
*
****************************************************************************/
void NXGL_FUNCNAME(nxgl_moverectangle,NXGLIB_SUFFIX)
(FAR struct lcd_planeinfo_s *pinfo, FAR const struct nxgl_rect_s *rect,
FAR struct nxgl_point_s *offset)
{
unsigned int ncols;
unsigned int srcrow;
unsigned int destrow;
/* Get the width of the rectange to move in pixels. */
ncols = rect->pt2.x - rect->pt1.x + 1;
/* Case 1: The destination position (offset) is above the displayed
* position (rect)
*/
if (offset->y < rect->pt1.y)
{
/* Copy the rectangle from top down */
for (srcrow = rect->pt1.y, destrow = offset->y;
srcrow <= rect->pt2.y;
srcrow++, destrow++)
{
(void)pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols);
(void)pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols);
}
}
/* Case 2: The destination position (offset) is below the displayed
* position (rect)
*/
else
{
unsigned int dy = rect->pt2.y - rect->pt1.y;
/* Copy the rectangle from the bottom up */
for (srcrow = rect->pt2.y, destrow = offset->y + dy;
srcrow >= rect->pt1.y;
srcrow--, destrow--)
{
(void)pinfo->getrun(srcrow, rect->pt1.x, pinfo->buffer, ncols);
(void)pinfo->putrun(destrow, offset->x, pinfo->buffer, ncols);
}
}
}
