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//
// TestWidget.cs
//
// Author:
// Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
//
// Copyright (c) 2013-2017 Jean-Philippe Bruyère
//
// 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;
namespace Crow
{
public class TestWidget : GraphicObject
{
double angle = 0.0;
public TestWidget ():base()
{
}
protected override void onDraw (Cairo.Context gr)
{
Rectangle r = ClientRectangle;
double radius = Math.Min (r.Width / 2, r.Height / 2) - 5;
gr.SetSourceRGBA (1.0, 0, 0, 1.0);
gr.LineWidth = 10;
gr.Arc (r.Width / 2, r.Height / 2, radius, angle, angle +0.5);
gr.Stroke ();
if (angle > 2.0 * Math.PI)
angle = 0.0;
else
angle += 0.08;
RegisterForGraphicUpdate ();
}
}
}
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