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Viewing changes to external/xwt/Xwt.Mac/Xwt.Mac/ScrollAdjustmentBackend.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/ScrollAdjustmentBackend.cs
 
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// 
 
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// ScrollAdjustmentBackend.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) 2012 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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namespace Xwt.Mac
 
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{
 
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        class ScrollAdjustmentBackend: IScrollAdjustmentBackend
 
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        {
 
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                bool vertical;
 
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                NSScrollView scrollView;
 
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                IScrollAdjustmentEventSink eventSink;
 
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                double lower;
 
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                double upper;
 
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                public ScrollAdjustmentBackend (NSScrollView scrollView, bool vertical)
 
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                {
 
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                        this.vertical = vertical;
 
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                        this.scrollView = scrollView;
 
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                }
 
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                #region IBackend implementation
 
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                public void InitializeBackend (object frontend)
 
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                {
 
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                }
 
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                public void EnableEvent (object eventId)
 
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                {
 
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                }
 
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                public void DisableEvent (object eventId)
 
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                {
 
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                }
 
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                #endregion
 
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                public void NotifyValueChanged ()
 
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                {
 
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                        eventSink.OnValueChanged ();
 
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                }
 
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                #region IScrollAdjustmentBackend implementation
 
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                public void Initialize (IScrollAdjustmentEventSink eventSink)
 
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                {
 
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                        this.eventSink = eventSink;
 
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                }
 
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                public double Value {
 
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                        get {
 
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                                if (vertical)
 
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                                        return scrollView.DocumentVisibleRect.Top;
 
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                                else
 
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                                        return scrollView.DocumentVisibleRect.Left;
 
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                        }
 
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                        set {
 
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                        }
 
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                }
 
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                public double LowerValue {
 
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                        get {
 
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                                return lower;
 
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                        }
 
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                        set {
 
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                                lower = value;
 
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                        }
 
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                }
 
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                public double UpperValue {
 
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                        get {
 
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                                return upper;
 
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                        }
 
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                        set {
 
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                                upper = value;
 
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                        }
 
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                }
 
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                public double PageIncrement {
 
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                        get {
 
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                                return 10;
 
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                        }
 
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                        set {
 
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                        }
 
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                }
 
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                public double StepIncrement {
 
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                        get {
 
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                                if (vertical)
 
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                                        return scrollView.VerticalLineScroll;
 
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                                else
 
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                                        return scrollView.HorizontalLineScroll;
 
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                        }
 
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                        set {
 
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                                if (vertical)
 
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                                        scrollView.VerticalLineScroll = (float)value;
 
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                                else
 
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                                        scrollView.HorizontalLineScroll = (float)value;
 
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                        }
 
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                }
 
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                public double PageSize {
 
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                        get {
 
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                                if (vertical)
 
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                                        return scrollView.DocumentVisibleRect.Height;
 
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                                else
 
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                                        return scrollView.DocumentVisibleRect.Width;
 
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                        }
 
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                        set {
 
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                        }
 
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                }
 
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                #endregion
 
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        }
 
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}
 
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