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![Mike Kestner](/assets/img/avatar_default.png)
* cairo/*.cs: flatten source hierarchy to simplify win32 build. * sample/Makefile.am: fix a ref issue with local cairo. svn path=/trunk/gtk-sharp/; revision=115401
903 lines
24 KiB
C#
903 lines
24 KiB
C#
//
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// Mono.Cairo.Context.cs
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//
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// Author:
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// Duncan Mak (duncan@ximian.com)
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// Miguel de Icaza (miguel@novell.com)
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// Hisham Mardam Bey (hisham.mardambey@gmail.com)
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// Alp Toker (alp@atoker.com)
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//
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// (C) Ximian Inc, 2003.
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// (C) Novell Inc, 2003.
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//
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// This is an OO wrapper API for the Cairo API.
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//
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// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Runtime.InteropServices;
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using Cairo;
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namespace Cairo {
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public struct Point
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{
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public Point (int x, int y)
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{
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this.x = x;
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this.y = y;
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}
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int x, y;
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public int X {
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get { return x; }
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set { x = value; }
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}
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public int Y {
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get { return y; }
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set { y = value; }
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}
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}
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public struct PointD
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{
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public PointD (double x, double y)
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{
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this.x = x;
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this.y = y;
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}
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double x, y;
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public double X {
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get { return x; }
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set { x = value; }
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}
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public double Y {
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get { return y; }
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set { y = value; }
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}
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}
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public struct Distance
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{
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public Distance (double dx, double dy)
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{
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this.dx = dx;
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this.dy = dy;
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}
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double dx, dy;
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public double Dx {
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get { return dx; }
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set { dx = value; }
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}
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public double Dy {
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get { return dy; }
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set { dy = value; }
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}
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}
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public struct Color
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{
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public Color(double r, double g, double b) : this (r, g, b, 1.0)
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{
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}
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public Color(double r, double g, double b, double a)
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{
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this.r = r;
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this.g = g;
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this.b = b;
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this.a = a;
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}
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double r, g, b, a;
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public double R {
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get { return r; }
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set { r = value; }
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}
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public double G {
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get { return g; }
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set { g = value; }
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}
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public double B {
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get { return b; }
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set { b = value; }
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}
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public double A {
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get { return a; }
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set { a = value; }
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}
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}
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[Obsolete ("Renamed Cairo.Context per suggestion from cairo binding guidelines.")]
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public class Graphics : Context {
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public Graphics (IntPtr state) : base (state) {}
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public Graphics (Surface surface) : base (surface) {}
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}
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public class Context : IDisposable
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{
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internal IntPtr state = IntPtr.Zero;
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static int native_glyph_size, c_compiler_long_size;
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static Context ()
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{
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//
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// This is used to determine what kind of structure
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// we should use to marshal Glyphs, as the public
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// definition in Cairo uses `long', which can be
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// 32 bits or 64 bits depending on the platform.
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//
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// We assume that sizeof(long) == sizeof(void*)
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// except in the case of Win64 where sizeof(long)
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// is 32 bits
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//
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int ptr_size = Marshal.SizeOf (typeof (IntPtr));
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PlatformID platform = Environment.OSVersion.Platform;
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if (platform == PlatformID.Win32NT ||
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platform == PlatformID.Win32S ||
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platform == PlatformID.Win32Windows ||
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platform == PlatformID.WinCE ||
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ptr_size == 4){
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c_compiler_long_size = 4;
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native_glyph_size = Marshal.SizeOf (typeof (NativeGlyph_4byte_longs));
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} else {
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c_compiler_long_size = 8;
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native_glyph_size = Marshal.SizeOf (typeof (Glyph));
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}
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}
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public Context (Surface surface)
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{
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state = NativeMethods.cairo_create (surface.Handle);
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}
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public Context (IntPtr state)
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{
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this.state = state;
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}
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~Context ()
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{
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Dispose (false);
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}
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void IDisposable.Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (!disposing){
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Console.Error.WriteLine ("Cairo.Context: called from finalization thread, programmer is missing a call to Dispose");
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return;
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}
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if (state == IntPtr.Zero)
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return;
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//Console.WriteLine ("Destroying");
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NativeMethods.cairo_destroy (state);
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state = IntPtr.Zero;
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}
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public void Save ()
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{
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NativeMethods.cairo_save (state);
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}
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public void Restore ()
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{
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NativeMethods.cairo_restore (state);
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}
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public Antialias Antialias {
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get { return NativeMethods.cairo_get_antialias (state); }
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set { NativeMethods.cairo_set_antialias (state, value); }
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}
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public Cairo.Status Status {
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get {
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return NativeMethods.cairo_status (state);
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}
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}
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public IntPtr Handle {
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get {
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return state;
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}
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}
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public Cairo.Operator Operator {
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set {
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NativeMethods.cairo_set_operator (state, value);
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}
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get {
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return NativeMethods.cairo_get_operator (state);
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}
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}
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//FIXME: obsolete this property
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public Cairo.Color Color {
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set {
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NativeMethods.cairo_set_source_rgba (state, value.R, value.G, value.B, value.A);
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}
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}
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[Obsolete ("Use Color property")]
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public Cairo.Color ColorRgb {
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set {
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Color = new Color (value.R, value.G, value.B);
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}
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}
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public double Tolerance {
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get {
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return NativeMethods.cairo_get_tolerance (state);
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}
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set {
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NativeMethods.cairo_set_tolerance (state, value);
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}
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}
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public Cairo.FillRule FillRule {
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set {
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NativeMethods.cairo_set_fill_rule (state, value);
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}
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get {
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return NativeMethods.cairo_get_fill_rule (state);
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}
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}
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public double LineWidth {
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set {
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NativeMethods.cairo_set_line_width (state, value);
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}
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get {
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return NativeMethods.cairo_get_line_width (state);
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}
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}
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public Cairo.LineCap LineCap {
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set {
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NativeMethods.cairo_set_line_cap (state, value);
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}
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get {
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return NativeMethods.cairo_get_line_cap (state);
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}
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}
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public Cairo.LineJoin LineJoin {
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set {
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NativeMethods.cairo_set_line_join (state, value);
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}
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get {
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return NativeMethods.cairo_get_line_join (state);
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}
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}
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public void SetDash (double [] dashes, double offset)
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{
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NativeMethods.cairo_set_dash (state, dashes, dashes.Length, offset);
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}
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public Pattern Pattern {
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set {
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NativeMethods.cairo_set_source (state, value.Pointer);
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}
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get {
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return new Pattern (NativeMethods.cairo_get_source (state));
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}
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}
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public Pattern Source {
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set {
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NativeMethods.cairo_set_source (state, value.Pointer);
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}
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get {
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return Pattern.Lookup (NativeMethods.cairo_get_source (state));
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}
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}
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public double MiterLimit {
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set {
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NativeMethods.cairo_set_miter_limit (state, value);
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}
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get {
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return NativeMethods.cairo_get_miter_limit (state);
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}
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}
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public PointD CurrentPoint {
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get {
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double x, y;
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NativeMethods.cairo_get_current_point (state, out x, out y);
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return new PointD (x, y);
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}
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}
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public Cairo.Surface Target {
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set {
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if (state != IntPtr.Zero)
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NativeMethods.cairo_destroy (state);
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state = NativeMethods.cairo_create (value.Handle);
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}
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get {
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return Cairo.Surface.LookupExternalSurface (
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NativeMethods.cairo_get_target (state));
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}
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}
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public Cairo.ScaledFont ScaledFont {
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set {
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NativeMethods.cairo_set_scaled_font (state, value.Handle);
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}
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get {
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return new ScaledFont (NativeMethods.cairo_get_scaled_font (state));
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}
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}
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public uint ReferenceCount {
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get { return NativeMethods.cairo_get_reference_count (state); }
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}
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public void SetSourceRGB (double r, double g, double b)
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{
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NativeMethods.cairo_set_source_rgb (state, r, g, b);
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}
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public void SetSourceRGBA (double r, double g, double b, double a)
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{
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NativeMethods.cairo_set_source_rgba (state, r, g, b, a);
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}
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//[Obsolete ("Use SetSource method (with double parameters)")]
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public void SetSourceSurface (Surface source, int x, int y)
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{
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NativeMethods.cairo_set_source_surface (state, source.Handle, x, y);
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}
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public void SetSource (Surface source, double x, double y)
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{
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NativeMethods.cairo_set_source_surface (state, source.Handle, x, y);
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}
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public void SetSource (Surface source)
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{
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NativeMethods.cairo_set_source_surface (state, source.Handle, 0, 0);
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}
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#region Path methods
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public void NewPath ()
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{
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NativeMethods.cairo_new_path (state);
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}
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public void NewSubPath ()
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{
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NativeMethods.cairo_new_sub_path (state);
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}
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public void MoveTo (PointD p)
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{
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MoveTo (p.X, p.Y);
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}
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public void MoveTo (double x, double y)
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{
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NativeMethods.cairo_move_to (state, x, y);
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}
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public void LineTo (PointD p)
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{
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LineTo (p.X, p.Y);
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}
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public void LineTo (double x, double y)
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{
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NativeMethods.cairo_line_to (state, x, y);
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}
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public void CurveTo (PointD p1, PointD p2, PointD p3)
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{
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CurveTo (p1.X, p1.Y, p2.X, p2.Y, p3.X, p3.Y);
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}
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public void CurveTo (double x1, double y1, double x2, double y2, double x3, double y3)
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{
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NativeMethods.cairo_curve_to (state, x1, y1, x2, y2, x3, y3);
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}
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public void RelMoveTo (Distance d)
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{
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RelMoveTo (d.Dx, d.Dy);
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}
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public void RelMoveTo (double dx, double dy)
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{
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NativeMethods.cairo_rel_move_to (state, dx, dy);
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}
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public void RelLineTo (Distance d)
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{
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RelLineTo (d.Dx, d.Dy);
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}
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public void RelLineTo (double dx, double dy)
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{
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NativeMethods.cairo_rel_line_to (state, dx, dy);
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}
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public void RelCurveTo (Distance d1, Distance d2, Distance d3)
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{
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RelCurveTo (d1.Dx, d1.Dy, d2.Dx, d2.Dy, d3.Dx, d3.Dy);
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}
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public void RelCurveTo (double dx1, double dy1, double dx2, double dy2, double dx3, double dy3)
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{
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NativeMethods.cairo_rel_curve_to (state, dx1, dy1, dx2, dy2, dx3, dy3);
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}
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public void Arc (double xc, double yc, double radius, double angle1, double angle2)
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{
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NativeMethods.cairo_arc (state, xc, yc, radius, angle1, angle2);
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}
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public void ArcNegative (double xc, double yc, double radius, double angle1, double angle2)
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{
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NativeMethods.cairo_arc_negative (state, xc, yc, radius, angle1, angle2);
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}
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public void Rectangle (Rectangle rectangle)
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{
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Rectangle (rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height);
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}
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public void Rectangle (PointD p, double width, double height)
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{
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Rectangle (p.X, p.Y, width, height);
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}
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public void Rectangle (double x, double y, double width, double height)
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{
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NativeMethods.cairo_rectangle (state, x, y, width, height);
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}
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public void ClosePath ()
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{
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NativeMethods.cairo_close_path (state);
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}
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public Path CopyPath ()
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{
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return new Path (NativeMethods.cairo_copy_path (state));
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}
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public Path CopyPathFlat ()
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{
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return new Path (NativeMethods.cairo_copy_path_flat (state));
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}
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public void AppendPath (Path path)
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{
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NativeMethods.cairo_append_path (state, path.handle);
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}
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#endregion
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#region Painting Methods
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public void Paint ()
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{
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NativeMethods.cairo_paint (state);
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}
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public void PaintWithAlpha (double alpha)
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{
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NativeMethods.cairo_paint_with_alpha (state, alpha);
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}
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public void Mask (Pattern pattern)
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{
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NativeMethods.cairo_mask (state, pattern.Pointer);
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}
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public void MaskSurface (Surface surface, double surface_x, double surface_y)
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{
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NativeMethods.cairo_mask_surface (state, surface.Handle, surface_x, surface_y);
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}
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public void Stroke ()
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{
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NativeMethods.cairo_stroke (state);
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}
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public void StrokePreserve ()
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{
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NativeMethods.cairo_stroke_preserve (state);
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}
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public Rectangle StrokeExtents ()
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{
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double x1, y1, x2, y2;
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NativeMethods.cairo_stroke_extents (state, out x1, out y1, out x2, out y2);
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return new Rectangle (x1, y1, x2, y2);
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}
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public void Fill ()
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{
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NativeMethods.cairo_fill (state);
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}
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public Rectangle FillExtents ()
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{
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double x1, y1, x2, y2;
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NativeMethods.cairo_fill_extents (state, out x1, out y1, out x2, out y2);
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return new Rectangle (x1, y1, x2, y2);
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}
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public void FillPreserve ()
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{
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NativeMethods.cairo_fill_preserve (state);
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}
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#endregion
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public void Clip ()
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{
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NativeMethods.cairo_clip (state);
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}
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public void ClipPreserve ()
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{
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NativeMethods.cairo_clip_preserve (state);
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}
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public void ResetClip ()
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{
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NativeMethods.cairo_reset_clip (state);
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}
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public bool InStroke (double x, double y)
|
|
{
|
|
return NativeMethods.cairo_in_stroke (state, x, y);
|
|
}
|
|
|
|
public bool InFill (double x, double y)
|
|
{
|
|
return NativeMethods.cairo_in_fill (state, x, y);
|
|
}
|
|
|
|
public Pattern PopGroup ()
|
|
{
|
|
return Pattern.Lookup (NativeMethods.cairo_pop_group (state));
|
|
}
|
|
|
|
public void PopGroupToSource ()
|
|
{
|
|
NativeMethods.cairo_pop_group_to_source (state);
|
|
}
|
|
|
|
public void PushGroup ()
|
|
{
|
|
NativeMethods.cairo_push_group (state);
|
|
}
|
|
|
|
public void PushGroup (Content content)
|
|
{
|
|
NativeMethods.cairo_push_group_with_content (state, content);
|
|
}
|
|
|
|
public Surface GroupTarget {
|
|
get {
|
|
IntPtr surface = NativeMethods.cairo_get_group_target (state);
|
|
return Surface.LookupSurface (surface);
|
|
}
|
|
}
|
|
|
|
public void Rotate (double angle)
|
|
{
|
|
NativeMethods.cairo_rotate (state, angle);
|
|
}
|
|
|
|
public void Scale (double sx, double sy)
|
|
{
|
|
NativeMethods.cairo_scale (state, sx, sy);
|
|
}
|
|
|
|
public void Translate (double tx, double ty)
|
|
{
|
|
NativeMethods.cairo_translate (state, tx, ty);
|
|
}
|
|
|
|
public void Transform (Matrix m)
|
|
{
|
|
NativeMethods.cairo_transform (state, m);
|
|
}
|
|
|
|
#region Methods that will become obsolete in the long term, after 1.2.5 becomes wildly available
|
|
|
|
//[Obsolete("Use UserToDevice instead")]
|
|
public void TransformPoint (ref double x, ref double y)
|
|
{
|
|
NativeMethods.cairo_user_to_device (state, ref x, ref y);
|
|
}
|
|
|
|
//[Obsolete("Use UserToDeviceDistance instead")]
|
|
public void TransformDistance (ref double dx, ref double dy)
|
|
{
|
|
NativeMethods.cairo_user_to_device_distance (state, ref dx, ref dy);
|
|
}
|
|
|
|
//[Obsolete("Use InverseTransformPoint instead")]
|
|
public void InverseTransformPoint (ref double x, ref double y)
|
|
{
|
|
NativeMethods.cairo_device_to_user (state, ref x, ref y);
|
|
}
|
|
|
|
//[Obsolete("Use DeviceToUserDistance instead")]
|
|
public void InverseTransformDistance (ref double dx, ref double dy)
|
|
{
|
|
NativeMethods.cairo_device_to_user_distance (state, ref dx, ref dy);
|
|
}
|
|
#endregion
|
|
|
|
public void UserToDevice (ref double x, ref double y)
|
|
{
|
|
NativeMethods.cairo_user_to_device (state, ref x, ref y);
|
|
}
|
|
|
|
public void UserToDeviceDistance (ref double dx, ref double dy)
|
|
{
|
|
NativeMethods.cairo_user_to_device_distance (state, ref dx, ref dy);
|
|
}
|
|
|
|
public void DeviceToUser (ref double x, ref double y)
|
|
{
|
|
NativeMethods.cairo_device_to_user (state, ref x, ref y);
|
|
}
|
|
|
|
public void DeviceToUserDistance (ref double dx, ref double dy)
|
|
{
|
|
NativeMethods.cairo_device_to_user_distance (state, ref dx, ref dy);
|
|
}
|
|
|
|
public Cairo.Matrix Matrix {
|
|
set {
|
|
NativeMethods.cairo_set_matrix (state, value);
|
|
}
|
|
|
|
get {
|
|
Matrix m = new Matrix();
|
|
NativeMethods.cairo_get_matrix (state, m);
|
|
return m;
|
|
}
|
|
}
|
|
|
|
public void SetFontSize (double scale)
|
|
{
|
|
NativeMethods.cairo_set_font_size (state, scale);
|
|
}
|
|
|
|
public void IdentityMatrix ()
|
|
{
|
|
NativeMethods.cairo_identity_matrix (state);
|
|
}
|
|
|
|
[Obsolete ("Use SetFontSize() instead.")]
|
|
public void FontSetSize (double scale)
|
|
{
|
|
SetFontSize (scale);
|
|
}
|
|
|
|
[Obsolete ("Use SetFontSize() instead.")]
|
|
public double FontSize {
|
|
set { SetFontSize (value); }
|
|
}
|
|
|
|
public Matrix FontMatrix {
|
|
get {
|
|
Matrix m;
|
|
NativeMethods.cairo_get_font_matrix (state, out m);
|
|
return m;
|
|
}
|
|
set { NativeMethods.cairo_set_font_matrix (state, value); }
|
|
}
|
|
|
|
public FontOptions FontOptions {
|
|
get {
|
|
FontOptions options = new FontOptions ();
|
|
NativeMethods.cairo_get_font_options (state, options.Handle);
|
|
return options;
|
|
}
|
|
set { NativeMethods.cairo_set_font_options (state, value.Handle); }
|
|
}
|
|
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
internal struct NativeGlyph_4byte_longs {
|
|
public int index;
|
|
public double x;
|
|
public double y;
|
|
|
|
public NativeGlyph_4byte_longs (Glyph source)
|
|
{
|
|
index = (int) source.index;
|
|
x = source.x;
|
|
y = source.y;
|
|
}
|
|
}
|
|
|
|
static internal IntPtr FromGlyphToUnManagedMemory(Glyph [] glyphs)
|
|
{
|
|
IntPtr dest = Marshal.AllocHGlobal (native_glyph_size * glyphs.Length);
|
|
long pos = dest.ToInt64();
|
|
|
|
if (c_compiler_long_size == 8){
|
|
foreach (Glyph g in glyphs){
|
|
Marshal.StructureToPtr (g, (IntPtr)pos, false);
|
|
pos += native_glyph_size;
|
|
}
|
|
} else {
|
|
foreach (Glyph g in glyphs){
|
|
NativeGlyph_4byte_longs n = new NativeGlyph_4byte_longs (g);
|
|
|
|
Marshal.StructureToPtr (n, (IntPtr)pos, false);
|
|
pos += native_glyph_size;
|
|
}
|
|
}
|
|
|
|
return dest;
|
|
}
|
|
|
|
public void ShowGlyphs (Glyph[] glyphs)
|
|
{
|
|
IntPtr ptr;
|
|
|
|
ptr = FromGlyphToUnManagedMemory (glyphs);
|
|
|
|
NativeMethods.cairo_show_glyphs (state, ptr, glyphs.Length);
|
|
|
|
Marshal.FreeHGlobal (ptr);
|
|
}
|
|
|
|
[Obsolete("The matrix argument was never used, use ShowGlyphs(Glyphs []) instead")]
|
|
public void ShowGlyphs (Matrix matrix, Glyph[] glyphs)
|
|
{
|
|
ShowGlyphs (glyphs);
|
|
}
|
|
|
|
[Obsolete("The matrix argument was never used, use GlyphPath(Glyphs []) instead")]
|
|
public void GlyphPath (Matrix matrix, Glyph[] glyphs)
|
|
{
|
|
GlyphPath (glyphs);
|
|
}
|
|
|
|
public void GlyphPath (Glyph[] glyphs)
|
|
{
|
|
IntPtr ptr;
|
|
|
|
ptr = FromGlyphToUnManagedMemory (glyphs);
|
|
|
|
NativeMethods.cairo_glyph_path (state, ptr, glyphs.Length);
|
|
|
|
Marshal.FreeHGlobal (ptr);
|
|
|
|
}
|
|
|
|
public FontExtents FontExtents {
|
|
get {
|
|
FontExtents f_extents;
|
|
NativeMethods.cairo_font_extents (state, out f_extents);
|
|
return f_extents;
|
|
}
|
|
}
|
|
|
|
public void CopyPage ()
|
|
{
|
|
NativeMethods.cairo_copy_page (state);
|
|
}
|
|
|
|
[Obsolete ("Use SelectFontFace() instead.")]
|
|
public void FontFace (string family, FontSlant slant, FontWeight weight)
|
|
{
|
|
SelectFontFace (family, slant, weight);
|
|
}
|
|
|
|
public FontFace ContextFontFace {
|
|
get {
|
|
return Cairo.FontFace.Lookup (NativeMethods.cairo_get_font_face (state));
|
|
}
|
|
|
|
set {
|
|
NativeMethods.cairo_set_font_face (state, value == null ? IntPtr.Zero : value.Handle);
|
|
}
|
|
}
|
|
|
|
public void SelectFontFace (string family, FontSlant slant, FontWeight weight)
|
|
{
|
|
NativeMethods.cairo_select_font_face (state, family, slant, weight);
|
|
}
|
|
|
|
public void ShowPage ()
|
|
{
|
|
NativeMethods.cairo_show_page (state);
|
|
}
|
|
|
|
public void ShowText (string str)
|
|
{
|
|
NativeMethods.cairo_show_text (state, str);
|
|
}
|
|
|
|
public void TextPath (string str)
|
|
{
|
|
NativeMethods.cairo_text_path (state, str);
|
|
}
|
|
|
|
public TextExtents TextExtents (string utf8)
|
|
{
|
|
TextExtents extents;
|
|
NativeMethods.cairo_text_extents (state, utf8, out extents);
|
|
return extents;
|
|
}
|
|
|
|
public TextExtents GlyphExtents (Glyph[] glyphs)
|
|
{
|
|
IntPtr ptr = FromGlyphToUnManagedMemory (glyphs);
|
|
|
|
TextExtents extents;
|
|
|
|
NativeMethods.cairo_glyph_extents (state, ptr, glyphs.Length, out extents);
|
|
|
|
Marshal.FreeHGlobal (ptr);
|
|
|
|
return extents;
|
|
}
|
|
}
|
|
}
|