129 lines
2.5 KiB
C#
129 lines
2.5 KiB
C#
//
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// Sample program demostrating using Cairo with Gtk#
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//
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using Gtk;
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using System;
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using System.Drawing;
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class X {
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static DrawingArea a, b;
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static void Main ()
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{
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Application.Init ();
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Gtk.Window w = new Gtk.Window ("System.Drawing and Gtk#");
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// Custom widget sample
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a = new PrettyGraphic ();
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// Event-based drawing
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b = new DrawingArea ();
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b.ExposeEvent += ExposeHandler;
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b.SizeAllocated += SizeAllocatedHandler;
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Button c = new Button ("Quit");
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c.Clicked += quit;
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MovingText m = new MovingText ();
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Box box = new HBox (true, 0);
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box.Add (a);
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box.Add (b);
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box.Add (m);
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box.Add (c);
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w.Add (box);
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w.ShowAll ();
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Application.Run ();
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}
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static void quit (object obj, EventArgs args)
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{
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Application.Quit ();
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}
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static Gdk.Rectangle rect;
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static void SizeAllocatedHandler (object obj, SizeAllocatedArgs args)
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{
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rect = args.Allocation;
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}
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static void ExposeHandler (object obj, ExposeEventArgs args)
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{
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Gdk.EventExpose ev = args.Event;
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Gdk.Window window = ev.Window;
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using (Graphics g = Gdk.Graphics.FromDrawable (window)){
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g.TranslateTransform (ev.Area.X, ev.Area.Y);
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using (Pen p = new Pen (Color.Red)){
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g.DrawPie (p, 0, 0, rect.Width, rect.Height, 50, 90);
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}
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}
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}
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}
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//
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// A sample using inheritance to draw
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//
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class PrettyGraphic : DrawingArea {
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public PrettyGraphic ()
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{
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SetSizeRequest (200, 200);
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}
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protected override bool OnExposeEvent (Gdk.EventExpose args)
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{
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Gdk.Window win = args.Window;
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Gdk.Rectangle area = args.Area;
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using (Graphics g = Gdk.Graphics.FromDrawable (args.Window)){
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Pen p = new Pen (Color.Blue, 1.0f);
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for (int i = 0; i < 600; i += 60)
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for (int j = 0; j < 600; j += 60)
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g.DrawLine (p, i, 0, 0, j);
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}
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return true;
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}
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}
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class MovingText : DrawingArea {
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static int d = 0;
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Font f;
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public MovingText ()
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{
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Gtk.Timeout.Add (20, new Function (Forever));
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SetSizeRequest (300, 200);
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f = new Font ("Times", 20);
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}
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bool Forever ()
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{
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QueueDraw ();
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return true;
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}
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protected override bool OnExposeEvent (Gdk.EventExpose args)
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{
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Gdk.Window win = args.Window;
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Gdk.Rectangle area = args.Area;
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using (Graphics g = Gdk.Graphics.FromDrawable (args.Window)){
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using (Brush back = new SolidBrush (Color.White),
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fore = new SolidBrush (Color.Red)){
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g.FillRectangle (back, 0, 0, 400, 400);
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g.TranslateTransform (150, 100);
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g.RotateTransform (d);
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d += 3;
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g.DrawString ("Mono", f, fore, 0, 0);
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}
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}
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return true;
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}
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}
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