1 files changed, 145 insertions, 0 deletions
diff --git a/nuttx/graphics/nxtk/nxtk_drawcircletoolbar.c b/nuttx/graphics/nxtk/nxtk_drawcircletoolbar.c
new file mode 100644
index 000000000..e9d9ca8ff
--- /dev/null
+++ b/nuttx/graphics/nxtk/nxtk_drawcircletoolbar.c
@@ -0,0 +1,145 @@
+/****************************************************************************
+ * graphics/nxtk/nxtk_drawcircletoolbar.c
+ *
+ *   Copyright (C) 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 <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
+
+/****************************************************************************
+ * Private Types
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Public Data
+ ****************************************************************************/
+
+/****************************************************************************
+ * Private Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * 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
+ *
+ * Return:
+ *   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++)
+    {
+      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);
+      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);
+}