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/****************************************************************************
* graphics/nxtk/nxtk_fillcircletoolbar.c
*
* Copyright (C) 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 <sys/types.h>
#include <debug.h>
#include <errno.h>
#include <nuttx/nx/nxglib.h>
#include <nuttx/nx/nxtk.h>
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
#define NCIRCLE_TRAPS 8
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Public Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: nxtk_fillcircletoolbar
*
* Description:
* Fill a circular region using the specified color.
*
* Input Parameters:
* hfwnd - The window handle returned by nxtk_openwindow()
* center - A pointer to the point that is the center of the circle
* radius - The radius of the circle in pixels.
* color - The color to use to fill the circle.
*
* Return:
* OK on success; ERROR on failure with errno set appropriately
*
****************************************************************************/
int nxtk_fillcircletoolbar(NXWINDOW hfwnd, FAR const struct nxgl_point_s *center,
nxgl_coord_t radius,
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
{
FAR struct nxgl_trapezoid_s traps[NCIRCLE_TRAPS];
int i;
int ret;
/* Describe the circular region as a sequence of 8 trapezoids */
nxgl_circletraps(center, radius, traps);
/* Then rend those trapezoids */
for (i = 0; i < NCIRCLE_TRAPS; i++)
{
ret = nxtk_filltraptoolbar(hfwnd, &traps[i], color);
if (ret != OK)
{
return ret;
}
}
return OK;
}
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