Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebindings@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 264 insertions, 0 deletions

diff --git a/qtsharp/src/examples/samples/mandelbrot.cs b/qtsharp/src/examples/samples/mandelbrot.cs
new file mode 100644
index 00000000..5dbd9b85
--- /dev/null
+++ b/qtsharp/src/examples/samples/mandelbrot.cs
@@ -0,0 +1,264 @@
+// Mandelbrot 0.1: A demonstration of Qt#
+//
+// Copyright 2002 Marcus Urban
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+// NOTE:
+// Variables with names like PlotXMin are in the cartesian coordinate plane.
+// Those with names like ImageXMin was in a translated coordinate system
+// where (0, 0) is the upper-left corner.
+
+
+using System;
+using Qt;
+
+
+// This struct is a simple implementation of complex numbers.
+// It was originally in a separate file because it is useful
+// in its own right. It is included here file only to make the
+// compilation process simpler of new users.
+
+public struct Complex {
+
+	private double re, im;
+	//private int x;
+
+	public Complex (double re, double im)
+	{
+		this.re = re;
+		this.im = im;
+	}
+
+	public static implicit operator Complex (double re)
+	{
+		return new Complex (re, 0.0);
+	}
+
+	public double Re
+	{
+		get { return re; }
+	}
+	
+	public double Im
+	{
+		get { return im; }
+	}
+	
+	public static double Abs (Complex a)
+	{
+		return Math.Abs (a.re) >= Math.Abs (a.im) ?
+			Math.Abs (a.re) * Math.Sqrt( 1.0 + (a.im/a.re)*(a.im/a.re) ) :
+			Math.Abs (a.im) * Math.Sqrt( 1.0 + (a.re/a.im)*(a.re/a.im) );
+	}
+
+	public static Complex operator + (Complex a, Complex b)
+	{
+		return new Complex (a.re + b.re, a.im + b.im);
+	}
+
+	public static Complex operator - (Complex a, Complex b)
+	{
+		return new Complex (a.re - b.re, a.im - b.im);
+	}
+
+	public static Complex operator * (Complex a, Complex b)
+	{
+		return new Complex ( a.re*b.re - a.im*b.im, a.im*b.re + a.re*b.im );
+	}
+
+	// Division isn't pretty. Do it later.
+
+	public override string ToString ()
+	{
+		return this.re.ToString () + "+" + this.im.ToString () + "i";
+	}
+}
+
+
+public class Mandelbrot {
+
+	public static int Iterations ( Complex c )
+	{
+		const int MaximumIterations = 16;
+		Complex value = c;
+		int currentDepth = 1;
+
+		while ( Complex.Abs(value) < 2.0 && currentDepth <= MaximumIterations ) {
+			++currentDepth;
+			value = (value * value) + c;
+		}
+		return currentDepth;
+	}
+
+
+	public static void Main (string[] args)
+	{
+		QApplication app = new QApplication (args);
+
+		ImageDialog dialog = new ImageDialog (null, "Mandelbrot", false, 0);
+		dialog.Show ();
+		app.SetMainWidget (dialog);
+		app.Exec ();
+
+	}
+}
+
+
+public class ImageDialog : QDialog {
+
+	const double DefaultPlotXMin = -2.0;
+	const double DefaultPlotXMax = 2.0;
+	const double DefaultPlotYMin = -1.5;
+	const double DefaultPlotYMax = 1.5;
+
+	QHBoxLayout dialogLayout;
+	QGridLayout gridLayout;
+	QVBoxLayout leftLayout;
+	QHBoxLayout buttonLayout;
+	QPushButton redrawButton;
+	QLabel pixmapLabel;
+	QSizePolicy fixedSizePolicy;
+
+	QLabel XMinLabel, XMaxLabel, YMinLabel, YMaxLabel;
+	QLineEdit editXMin, editXMax, editYMin, editYMax;
+
+	public ImageDialog (QWidget parent, string name, bool modal, WidgetFlags fl):
+		base (parent, name, modal, fl)
+	{
+		if (name == string.Empty)
+			SetName ("imageDialog");
+		SetCaption ("Mandelbrot Image");
+
+		dialogLayout = new QHBoxLayout (this, 11, 6);
+		gridLayout = new QGridLayout (null, 1, 1, 0, 6, "gridLayout");
+		leftLayout = new QVBoxLayout (null, 0, 6, "leftLayout");
+
+		fixedSizePolicy = new QSizePolicy ();
+		fixedSizePolicy.SetHorData (QSizePolicy.SizeType.Fixed);
+		fixedSizePolicy.SetVerData (QSizePolicy.SizeType.Fixed);
+
+		XMinLabel = new QLabel ("Xmin", this);
+		XMinLabel.SetSizePolicy (fixedSizePolicy);
+		gridLayout.AddWidget (XMinLabel, 0, 0);
+
+		XMaxLabel = new QLabel ("Xmax", this);
+		XMaxLabel.SetSizePolicy(fixedSizePolicy);
+		gridLayout.AddWidget (XMaxLabel, 1, 0);
+
+		YMinLabel = new QLabel ("Ymin", this);
+		YMinLabel.SetSizePolicy (fixedSizePolicy);
+		gridLayout.AddWidget (YMinLabel, 2, 0);
+
+		YMaxLabel = new QLabel ("Ymax", this);
+		YMaxLabel.SetSizePolicy (fixedSizePolicy);
+		gridLayout.AddWidget (YMaxLabel, 3, 0);
+
+		QDoubleValidator validator = new QDoubleValidator (this);
+
+		editXMin = new QLineEdit (this, "editXMin");
+		editXMin.SetText (Convert.ToString (DefaultPlotXMin));
+		editXMin.SetValidator (validator);
+		gridLayout.AddWidget (editXMin, 0, 1);
+
+		editXMax = new QLineEdit (this, "editXMax");
+		editXMax.SetText (Convert.ToString(DefaultPlotXMax));
+		editXMax.SetValidator (validator);
+		gridLayout.AddWidget (editXMax, 1, 1);
+
+		editYMin = new QLineEdit (this, "editYMin");
+		editYMin.SetText (Convert.ToString(DefaultPlotYMin));
+		editYMin.SetValidator (validator);
+		gridLayout.AddWidget (editYMin, 2, 1);
+
+		editYMax = new QLineEdit (this, "editYMax");
+		editYMax.SetText (Convert.ToString(DefaultPlotYMax));
+		editYMax.SetValidator (validator);
+		gridLayout.AddWidget (editYMax, 3, 1);
+
+		leftLayout.AddLayout (gridLayout);
+		QSpacerItem spacer1 = new QSpacerItem (0, 0, 0, 0);
+		leftLayout.AddItem (spacer1);
+
+		buttonLayout = new QHBoxLayout (null, 0, 6, "buttonLayout");
+		QSpacerItem spacer2 = new QSpacerItem (0, 0, 0, 0);
+		buttonLayout.AddItem (spacer2);
+
+		redrawButton = new QPushButton ("Redraw", this);
+		redrawButton.SetDefault (true);
+		buttonLayout.AddWidget (redrawButton);
+
+		QSpacerItem spacer3 = new QSpacerItem (0, 0, 0, 0);
+		buttonLayout.AddItem (spacer3);
+
+		leftLayout.AddLayout (buttonLayout);
+
+		dialogLayout.AddLayout (leftLayout);
+		QSpacerItem spacer4 = new QSpacerItem (0, 0, 0, 0);
+		dialogLayout.AddItem (spacer4);
+
+		pixmapLabel = new QLabel (this, "pixmapLabel", 0);
+		pixmapLabel.SetScaledContents (true);
+		dialogLayout.AddWidget (pixmapLabel);
+
+		QObject.Connect (redrawButton, SIGNAL ("clicked()"), this, SLOT ("Redraw()"));
+
+		Redraw ();
+	}
+
+
+	QImage MandelbrotImage ()
+	{
+		int depth;
+		double real, imag;
+
+		double PlotXMin = Convert.ToDouble ( editXMin.Text () );
+		double PlotXMax = Convert.ToDouble ( editXMax.Text () );
+		double PlotYMin = Convert.ToDouble ( editYMin.Text () );
+		double PlotYMax = Convert.ToDouble ( editYMax.Text () );
+
+		int ImageXMax = pixmapLabel.Width ();
+		int ImageYMax = pixmapLabel.Height ();
+
+		QImage image = new QImage (ImageXMax, ImageYMax, 32, 0);
+
+		for (int x = 0; x <= ImageXMax - 1; x+=1) {
+			for (int y = 0; y <= ImageYMax - 1; y+=1) {
+				real = (PlotXMax - PlotXMin)/ImageXMax * x + PlotXMin;
+				imag = (PlotYMin - PlotYMax)/ImageYMax * y + PlotYMax;
+				depth = Mandelbrot.Iterations ( new Complex (real, imag) );
+				image.SetPixel ( x, y, (uint) depth*16 );
+			}
+		}
+
+		return image;
+	}
+
+	public void Redraw ()
+	{
+		QSize s = pixmapLabel.BaseSize ();
+		pixmapLabel.Resize (400,300);
+		QApplication.SetOverrideCursor ( new QCursor( (int) CursorShape.WaitCursor ));
+		QImage image = MandelbrotImage ();
+		QPixmap pixmap = new QPixmap (image);
+		pixmapLabel.SetPixmap( pixmap);
+		image.Dispose ();
+		pixmap.Dispose ();
+		this.AdjustSize ();
+		QApplication.RestoreOverrideCursor ();
+	}
+}
+
+