GtkSharp/cairo/Matrix.cs
Michael Hutchinson 38d1a3f13e cairo: Introduce the concept of reference ownership
Also:
  * improving naming consistency
  * obsolete old/broken stuff
  * clean up tabs/space mix

NOTE: this removes the wrapper caches for Pattern and Surface as
there was no reliable way to clear them.

This is a merge from changes in Mono.Cairo in mono 3.2.
2013-07-26 17:43:11 -05:00

194 lines
4.7 KiB
C#

//
// Mono.Cairo.Matrix.cs
//
// Author: Duncan Mak
// Hisham Mardam Bey (hisham.mardambey@gmail.com)
// Idan Gazit (idan@fastmail.fm)
//
// (C) Ximian Inc, 2003 - 2005.
//
// This is an OO wrapper API for the Cairo API
//
// 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.Runtime.InteropServices;
namespace Cairo {
[StructLayout(LayoutKind.Sequential)]
public class Matrix : ICloneable
{
public double Xx;
public double Yx;
public double Xy;
public double Yy;
public double X0;
public double Y0;
public Matrix (double xx, double yx, double xy, double yy,
double x0, double y0)
{
this.Xx = xx; this.Yx = yx; this.Xy = xy;
this.Yy = yy; this.X0 = x0; this.Y0 = y0;
}
public Matrix ()
{
this.InitIdentity ();
}
public bool IsIdentity ()
{
return (this == new Matrix ());
}
public void InitIdentity ()
{
// this.Init(1,0,0,1,0,0);
NativeMethods.cairo_matrix_init_identity (this);
}
public void Init (double xx, double yx, double xy, double yy,
double x0, double y0)
{
this.Xx = xx; this.Yx = yx; this.Xy = xy;
this.Yy = yy; this.X0 = x0; this.Y0 = y0;
}
public void InitTranslate (double tx, double ty)
{
//this.Init (1, 0, 0, 1, tx, ty);
NativeMethods.cairo_matrix_init_translate (this, tx, ty);
}
public void Translate (double tx, double ty)
{
NativeMethods.cairo_matrix_translate (this, tx, ty);
}
public void InitScale (double sx, double sy)
{
//this.Init (sx, 0, 0, sy, 0, 0);
NativeMethods.cairo_matrix_init_scale (this, sx, sy);
}
public void Scale (double sx, double sy)
{
NativeMethods.cairo_matrix_scale (this, sx, sy);
}
public void InitRotate (double radians)
{
/*
double s, c;
s = Math.Sin (radians);
c = Math.Cos (radians);
this.Init (c, s, -s, c, 0, 0);
*/
NativeMethods.cairo_matrix_init_rotate (this, radians);
}
public void Rotate (double radians)
{
NativeMethods.cairo_matrix_rotate (this, radians);
}
public Cairo.Status Invert ()
{
return NativeMethods.cairo_matrix_invert (this);
}
public void Multiply (Matrix b)
{
Matrix a = (Matrix) this.Clone ();
NativeMethods.cairo_matrix_multiply (this, a, b);
}
public static Matrix Multiply (Matrix a, Matrix b) {
Matrix result = new Matrix ();
NativeMethods.cairo_matrix_multiply (result, a, b);
return result;
}
public void TransformDistance (ref double dx, ref double dy)
{
NativeMethods.cairo_matrix_transform_distance (this, ref dx, ref dy);
}
public void TransformPoint (ref double x, ref double y)
{
NativeMethods.cairo_matrix_transform_point (this, ref x, ref y);
}
public override String ToString ()
{
String s = String.Format ("xx:{0:##0.0#} yx:{1:##0.0#} xy:{2:##0.0#} yy:{3:##0.0#} x0:{4:##0.0#} y0:{5:##0.0#}",
this.Xx, this.Yx, this.Xy, this.Yy, this.X0, this.Y0);
return s;
}
public static bool operator == (Matrix lhs, Matrix rhs)
{
return (lhs.Xx == rhs.Xx &&
lhs.Xy == rhs.Xy &&
lhs.Yx == rhs.Yx &&
lhs.Yy == rhs.Yy &&
lhs.X0 == rhs.X0 &&
lhs.Y0 == rhs.Y0 );
}
public static bool operator != (Matrix lhs, Matrix rhs)
{
return !(lhs==rhs);
}
public override bool Equals(object o)
{
if (! (o is Matrix))
return false;
else
return (this == (Matrix) o);
}
public override int GetHashCode()
{
return (int)this.Xx ^ (int)this.Xx>>32 ^
(int)this.Xy ^ (int)this.Xy>>32 ^
(int)this.Yx ^ (int)this.Yx>>32 ^
(int)this.Yy ^ (int)this.Yy>>32 ^
(int)this.X0 ^ (int)this.X0>>32 ^
(int)this.Y0 ^ (int)this.Y0>>32;
}
public object Clone()
{
return this.MemberwiseClone ();
}
}
}