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//
//
// Mono.Cairo drawing samples using GTK# as drawing surface
// Hisham Mardam Bey <hisham@hisham.cc>
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// 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 System.Reflection;
using System.Runtime.InteropServices;
using Cairo;
using Gtk;
public class GtkCairo
{
static DrawingArea a;
static void Main ()
{
Application.Init ();
Gtk.Window w = new Gtk.Window ("Mono.Cairo Circles demo");
a = new CairoGraphic ();
Box box = new HBox (true, 0);
box.Add (a);
w.Add (box);
w.Resize (500,500);
w.ShowAll ();
Application.Run ();
}
}
public class CairoGraphic : DrawingArea
{
static void draw (Cairo.Context gr, int width, int height)
{
double x0 = 0.1;
double y0 = 0.1;
double rect_width = 0.8;
double rect_height = 0.8;
double radius = 0.4;
double x1,y1;
gr.Scale (width, height);
gr.LineWidth = 0.04;
x1=x0+rect_width;
y1=y0+rect_height;
if (rect_width == 0 || rect_height == 0)
return;
if (rect_width/2<radius) {
if (rect_height/2<radius) {
gr.MoveTo( new PointD(x0, (y0 + y1)/2) );
gr.CurveTo ( new PointD (x0 ,y0),
new PointD (x0, y0),
new PointD ((x0 + x1)/2, y0)
);
gr.CurveTo ( new PointD (x1, y0 ),
new PointD (x1, y0 ),
new PointD (x1, (y0 + y1)/2)
);
gr.CurveTo ( new PointD (x1, y1),
new PointD (x1, y1),
new PointD ((x1 + x0)/2, y1)
);
gr.CurveTo ( new PointD (x0, y1),
new PointD (x0, y1),
new PointD (x0, (y0 + y1)/2)
);
}
else {
gr.MoveTo ( new PointD (x0, y0 + radius) );
gr.CurveTo ( new PointD (x0 ,y0),
new PointD (x0, y0),
new PointD ((x0 + x1)/2, y0)
);
gr.CurveTo ( new PointD (x1, y0),
new PointD (x1, y0),
new PointD (x1, y0 + radius)
);
gr.LineTo ( new PointD (x1 , y1 - radius) );
gr.CurveTo ( new PointD (x1, y1),
new PointD (x1, y1),
new PointD ((x1 + x0)/2, y1)
);
gr.CurveTo ( new PointD (x0, y1),
new PointD (x0, y1),
new PointD (x0, y1- radius)
);
}
}
else {
if (rect_height/2<radius) {
gr.MoveTo ( new PointD (x0, (y0 + y1)/2) );
gr.CurveTo ( new PointD (x0 , y0),
new PointD (x0 , y0),
new PointD (x0 + radius, y0)
);
gr.LineTo ( new PointD (x1 - radius, y0) );
gr.CurveTo ( new PointD (x1, y0),
new PointD (x1, y0),
new PointD (x1, (y0 + y1)/2)
);
gr.CurveTo ( new PointD (x1, y1),
new PointD (x1, y1),
new PointD (x1 - radius, y1)
);
gr.LineTo ( new PointD (x0 + radius, y1) );
gr.CurveTo ( new PointD ( x0, y1),
new PointD (x0, y1),
new PointD (x0, (y0 + y1)/2)
);
}
else {
gr.MoveTo ( new PointD (x0, y0 + radius) );
gr.CurveTo ( new PointD (x0 , y0),
new PointD (x0 , y0),
new PointD (x0 + radius, y0)
);
gr.LineTo ( new PointD (x1 - radius, y0) );
gr.CurveTo ( new PointD (x1, y0),
new PointD (x1, y0),
new PointD (x1, y0 + radius)
);
gr.LineTo ( new PointD (x1 , y1 - radius) );
gr.CurveTo ( new PointD ( x1, y1),
new PointD (x1, y1),
new PointD (x1 - radius, y1)
);
gr.LineTo ( new PointD (x0 + radius, y1) );
gr.CurveTo ( new PointD ( x0, y1),
new PointD (x0, y1),
new PointD (x0, y1- radius)
);
}
}
gr.Color = new Color (0.5,0.5,1, 1);
gr.FillPreserve ();
gr.Color = new Color(0.5, 0, 0, 0.5);
gr.Stroke ();
}
protected override bool OnExposeEvent (Gdk.EventExpose args)
{
Gdk.Window win = args.Window;
//Gdk.Rectangle area = args.Area;
Cairo.Context g = Gdk.Context.CreateDrawable (win);
int x, y, w, h, d;
win.GetGeometry(out x, out y, out w, out h, out d);
draw (g, w, h);
return true;
}
}
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