124 lines
4.0 KiB
C
124 lines
4.0 KiB
C
/****************************************************************************
|
|
* libs/libnx/nxtk/nxtk_drawcircletoolbar.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* 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
|
|
****************************************************************************/
|
|
|
|
/* Named indices into the 16 circle points generated by nxgl_circlepts */
|
|
|
|
#define POINT_0p0 0
|
|
#define POINT_22p5 1
|
|
#define POINT_45p0 2
|
|
#define POINT_67p5 3
|
|
#define POINT_90p0 4
|
|
#define POINT_112p5 5
|
|
#define POINT_135p0 6
|
|
#define POINT_157p5 7
|
|
#define POINT_180p0 8
|
|
#define POINT_202p5 9
|
|
#define POINT_225p0 10
|
|
#define POINT_247p5 11
|
|
#define POINT_270p0 12
|
|
#define POINT_292p5 13
|
|
#define POINT_315p0 14
|
|
#define POINT_337p5 15
|
|
#define NCIRCLE_POINTS 16
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: nxtk_drawcircletoolbar
|
|
*
|
|
* Description:
|
|
* Draw a circular outline using the specified line thickness and 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.
|
|
* width - The width of the line
|
|
* color - The color to use to fill the line
|
|
*
|
|
* Returned Value:
|
|
* OK on success; ERROR on failure with errno set appropriately
|
|
*
|
|
****************************************************************************/
|
|
|
|
int nxtk_drawcircletoolbar(NXTKWINDOW hfwnd,
|
|
FAR const struct nxgl_point_s *center,
|
|
nxgl_coord_t radius, nxgl_coord_t width,
|
|
nxgl_mxpixel_t color[CONFIG_NX_NPLANES])
|
|
{
|
|
struct nxgl_point_s pts[NCIRCLE_POINTS];
|
|
FAR struct nxgl_vector_s vector;
|
|
int i;
|
|
int ret;
|
|
|
|
/* Convert the circle to a set of 16 points */
|
|
|
|
nxgl_circlepts(center, radius, pts);
|
|
|
|
/* Draw each pair of points as a vector */
|
|
|
|
for (i = POINT_0p0; i < POINT_337p5; i++)
|
|
{
|
|
/* Draw one line segment */
|
|
|
|
vector.pt1.x = pts[i].x;
|
|
vector.pt1.y = pts[i].y;
|
|
vector.pt2.x = pts[i + 1].x;
|
|
vector.pt2.y = pts[i + 1].y;
|
|
|
|
ret = nxtk_drawlinetoolbar(hfwnd,
|
|
&vector,
|
|
width,
|
|
color,
|
|
NX_LINECAP_PT1);
|
|
if (ret != OK)
|
|
{
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
/* The final, closing vector is a special case */
|
|
|
|
vector.pt1.x = pts[POINT_337p5].x;
|
|
vector.pt1.y = pts[POINT_337p5].y;
|
|
vector.pt2.x = pts[POINT_0p0].x;
|
|
vector.pt2.y = pts[POINT_0p0].y;
|
|
return nxtk_drawlinetoolbar(hfwnd, &vector, width, color, NX_LINECAP_PT1);
|
|
}
|