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Viewing changes to external/xwt/Xwt.Mac/Xwt.Mac/CanvasBackend.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/xwt/Xwt.Mac/Xwt.Mac/CanvasBackend.cs
 
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// 
 
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// CanvasBackend.cs
 
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//  
 
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// Author:
 
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//       Lluis Sanchez <lluis@xamarin.com>
 
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// 
 
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// Copyright (c) 2011 Xamarin Inc
 
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// 
 
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// Permission is hereby granted, free of charge, to any person obtaining a copy
 
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// of this software and associated documentation files (the "Software"), to deal
 
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// in the Software without restriction, including without limitation the rights
 
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 
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// copies of the Software, and to permit persons to whom the Software is
 
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// furnished to do so, subject to the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be included in
 
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// 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, EXPRESS OR
 
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 
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// THE SOFTWARE.
 
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using System;
 
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using Xwt.Backends;
 
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using MonoMac.AppKit;
 
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using MonoMac.CoreGraphics;
 
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using Xwt.Engine;
 
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namespace Xwt.Mac
 
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{
 
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        public class CanvasBackend: ViewBackend<NSView,ICanvasEventSink>, ICanvasBackend
 
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        {
 
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                CanvasView view;
 
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                public CanvasBackend ()
 
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                {
 
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                }
 
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                public override void Initialize ()
 
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                {
 
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                        view = new CanvasView (EventSink);
 
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                        ViewObject = view;
 
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                }
 
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                public Rectangle Bounds {
 
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                        get {
 
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                                return new Rectangle (0, 0, view.Frame.Width, view.Frame.Height);
 
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                        }
 
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                }
 
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                public void QueueDraw ()
 
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                {
 
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                        view.NeedsDisplay = true;
 
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                }
 
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                public void QueueDraw (Rectangle rect)
 
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                {
 
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                        view.NeedsToDraw (new System.Drawing.RectangleF ((float)rect.X, (float)rect.Y, (float)rect.Width, (float)rect.Height));
 
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                }
 
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                public void AddChild (IWidgetBackend widget, Rectangle rect)
 
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                {
 
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                        var v = GetWidget (widget);
 
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                        view.AddSubview (v);
 
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                        // Not using SetWidgetBounds because the view is flipped
 
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                        v.Frame = new System.Drawing.RectangleF ((float)rect.X, (float)rect.Y, (float)rect.Width, (float)rect.Height);;
 
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                        v.NeedsDisplay = true;
 
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                }
 
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                public void RemoveChild (IWidgetBackend widget)
 
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                {
 
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                        var v = GetWidget (widget);
 
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                        v.RemoveFromSuperview ();
 
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                }
 
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                public void SetChildBounds (IWidgetBackend widget, Rectangle rect)
 
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                {
 
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                        var w = GetWidget (widget);
 
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                        // Not using SetWidgetBounds because the view is flipped
 
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                        w.Frame = new System.Drawing.RectangleF ((float)rect.X, (float)rect.Y, (float)rect.Width, (float)rect.Height);;
 
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                        w.NeedsDisplay = true;
 
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                }
 
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        }
 
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        class CanvasView: NSView, IViewObject
 
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        {
 
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                ICanvasEventSink eventSink;
 
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                public CanvasView (ICanvasEventSink eventSink)
 
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                {
 
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                        this.eventSink = eventSink;
 
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                }
 
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                public Widget Frontend { get; set; }
 
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                public NSView View {
 
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                        get { return this; }
 
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                }
 
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                public override bool IsFlipped {
 
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                        get {
 
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                                return true;
 
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                        }
 
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                }
 
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                public override void DrawRect (System.Drawing.RectangleF dirtyRect)
 
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                {
 
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                        Toolkit.Invoke (delegate {
 
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                                CGContext ctx = NSGraphicsContext.CurrentContext.GraphicsPort;
 
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                                //fill BackgroundColor
 
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                                ctx.SetFillColor (Frontend.BackgroundColor.ToCGColor ());
 
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                                ctx.FillRect (Bounds);
 
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                                var backend = new CGContextBackend {
 
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                                        Context = ctx,
 
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                                        InverseViewTransform = ctx.GetCTM ().Invert ()
 
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                                };
 
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                                eventSink.OnDraw (backend, new Rectangle (dirtyRect.X, dirtyRect.Y, dirtyRect.Width, dirtyRect.Height));
 
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                        });
 
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                }
 
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                public override void RightMouseDown (NSEvent theEvent)
 
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                {
 
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                        var p = ConvertPointFromView (theEvent.LocationInWindow, null);
 
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                        ButtonEventArgs args = new ButtonEventArgs ();
 
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                        args.X = p.X;
 
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                        args.Y = p.Y;
 
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                        args.Button = PointerButton.Right;
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnButtonPressed (args);
 
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                        });
 
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                }
 
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                public override void RightMouseUp (NSEvent theEvent)
 
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                {
 
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                        var p = ConvertPointFromView (theEvent.LocationInWindow, null);
 
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                        ButtonEventArgs args = new ButtonEventArgs ();
 
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                        args.X = p.X;
 
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                        args.Y = p.Y;
 
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                        args.Button = PointerButton.Right;
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnButtonReleased (args);
 
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                        });
 
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                }
 
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                public override void MouseDown (NSEvent theEvent)
 
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                {
 
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                        var p = ConvertPointFromView (theEvent.LocationInWindow, null);
 
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                        ButtonEventArgs args = new ButtonEventArgs ();
 
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                        args.X = p.X;
 
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                        args.Y = p.Y;
 
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                        args.Button = PointerButton.Left;
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnButtonPressed (args);
 
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                        });
 
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                }
 
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                public override void MouseUp (NSEvent theEvent)
 
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                {
 
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                        var p = ConvertPointFromView (theEvent.LocationInWindow, null);
 
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                        ButtonEventArgs args = new ButtonEventArgs ();
 
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                        args.X = p.X;
 
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                        args.Y = p.Y;
 
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                        args.Button = (PointerButton) theEvent.ButtonNumber + 1;
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnButtonReleased (args);
 
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                        });
 
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                }
 
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                public override void MouseMoved (NSEvent theEvent)
 
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                {
 
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                        var p = ConvertPointFromView (theEvent.LocationInWindow, null);
 
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                        MouseMovedEventArgs args = new MouseMovedEventArgs ((long) TimeSpan.FromSeconds (theEvent.Timestamp).TotalMilliseconds, p.X, p.Y);
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnMouseMoved (args);
 
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                        });
 
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                }
 
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                public override void MouseDragged (NSEvent theEvent)
 
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                {
 
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                        var p = ConvertPointFromView (theEvent.LocationInWindow, null);
 
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                        MouseMovedEventArgs args = new MouseMovedEventArgs ((long) TimeSpan.FromSeconds (theEvent.Timestamp).TotalMilliseconds, p.X, p.Y);
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnMouseMoved (args);
 
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                        });
 
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                }
 
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                public override void SetFrameSize (System.Drawing.SizeF newSize)
 
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                {
 
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                        base.SetFrameSize (newSize);
 
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                        Toolkit.Invoke (delegate {
 
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                                eventSink.OnBoundsChanged ();
 
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                        });
 
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                }
 
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        }
 
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}
 
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