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//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using Cairo;
using System.Windows.Forms;
public class SwfCairo : Form
{
static void Main ()
{
SwfCairo f = new SwfCairo ();
f.ShowDialog ();
}
protected override void OnPaint (PaintEventArgs a)
{
IntPtr hdc = a.Graphics.GetHdc ();
Win32Surface s = new Win32Surface (hdc);
Context cr = new Context (s);
draw (cr, this.Width, this.Height);
a.Graphics.ReleaseHdc (hdc);
}
static void draw (Context cr, int width, int height)
{
double xc = 0.5;
double yc = 0.5;
double radius = 0.4;
double angle1 = 45.0 * (Math.PI / 180.0); // angles are specified
double angle2 = 180.0 * (Math.PI / 180.0); // in radians
cr.Scale (width, height);
cr.LineWidth = 0.04;
cr.Arc (xc, yc, radius, angle1, angle2);
cr.Stroke ();
// draw helping lines
cr.Color = new Color(1, 0.2, 0.2, 0.6);
cr.Arc (xc, yc, 0.05, 0, 2 * Math.PI);
cr.Fill ();
cr.LineWidth = 0.03;
cr.Arc (xc, yc, radius, angle1, angle1);
cr.LineTo (new PointD (xc, yc));
cr.Arc (xc, yc, radius, angle2, angle2);
cr.LineTo (new PointD (xc, yc));
cr.Stroke ();
}
}
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