90 lines
3.2 KiB
C#
90 lines
3.2 KiB
C#
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// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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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 SharpDX.Mathematics.Interop;
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namespace SharpDX.DXGI
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{
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public partial class IVirtualSurfaceImageSourceNative
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{
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private IVirtualSurfaceUpdatesCallbackNative callback;
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private EventHandler<EventArgs> updatesNeeded;
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/// <summary>
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/// Gets the set of regions that must be updated on the shared surface.
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/// </summary>
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public RawRectangle[] UpdateRectangles
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{
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get
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{
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int count = this.GetUpdateRectCount();
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var regionToUpdate = new RawRectangle[count];
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this.GetUpdateRects(regionToUpdate, count);
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return regionToUpdate;
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}
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}
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/// <summary>
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/// Event fired when an update is needed. Use <see cref="IVirtualSurfaceImageSourceNative.UpdateRectangles"/> to get the region to update.
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/// </summary>
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public event EventHandler<EventArgs> UpdatesNeeded
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{
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add
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{
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if (callback == null)
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{
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callback = new VirtualSurfaceUpdatesCallbackNativeCallback(this);
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RegisterForUpdatesNeeded(callback);
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}
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updatesNeeded = (EventHandler<EventArgs>)Delegate.Combine(updatesNeeded, value);
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}
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remove
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{
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updatesNeeded = (EventHandler<EventArgs>)Delegate.Remove(updatesNeeded, value);
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}
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}
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private void OnUpdatesNeeded()
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{
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if (updatesNeeded != null)
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updatesNeeded(this, EventArgs.Empty);
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}
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private class VirtualSurfaceUpdatesCallbackNativeCallback : CallbackBase, IVirtualSurfaceUpdatesCallbackNative
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{
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IVirtualSurfaceImageSourceNative eventCallback;
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public VirtualSurfaceUpdatesCallbackNativeCallback(IVirtualSurfaceImageSourceNative eventCallbackArg)
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{
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eventCallback = eventCallbackArg;
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}
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public void UpdatesNeeded()
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{
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eventCallback.OnUpdatesNeeded();
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}
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}
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}
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}
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