118 lines
No EOL
4.4 KiB
C#
118 lines
No EOL
4.4 KiB
C#
/*
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Copyright (c) 2014, Lars Brubaker
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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The views and conclusions contained in the software and documentation are those
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of the authors and should not be interpreted as representing official policies,
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either expressed or implied, of the FreeBSD Project.
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*/
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using MatterHackers.Agg;
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using MatterHackers.Agg.Font;
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using MatterHackers.Agg.Image;
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using MatterHackers.Agg.PlatformAbstract;
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using MatterHackers.Agg.UI;
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using MatterHackers.Localizations;
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using MatterHackers.MatterControl.ContactForm;
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using MatterHackers.MatterControl.CustomWidgets;
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using MatterHackers.MatterControl.HtmlParsing;
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using MatterHackers.MatterControl.PrintLibrary;
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using MatterHackers.MatterControl.PrintQueue;
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Net;
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namespace MatterHackers.MatterControl
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{
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public class ImageWidget_AsyncLoadOnDraw : ImageWidget
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{
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public event EventHandler LoadComplete;
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bool startedLoad = false;
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string uriToLoad;
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IRecieveBlenderByte scalingBlender = new BlenderBGRA();
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public void SetScalingBlender(IRecieveBlenderByte blender) { scalingBlender = blender; }
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public ImageWidget_AsyncLoadOnDraw(ImageBuffer image, string uriToLoad)
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: base(image)
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{
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this.uriToLoad = uriToLoad;
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}
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public override void OnDraw(Graphics2D graphics2D)
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{
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if (!startedLoad)
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{
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try
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{
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startedLoad = true;
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WebClient client = new WebClient();
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client.DownloadDataCompleted += client_DownloadDataCompleted;
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client.DownloadDataAsync(new Uri(uriToLoad));
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}
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catch (Exception)
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{
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GuiWidget.BreakInDebugger();
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}
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}
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base.OnDraw(graphics2D);
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}
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void client_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e)
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{
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try // if we get a bad result we can get a target invocation exception. In that case just don't show anything
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{
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byte[] raw = e.Result;
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Stream stream = new MemoryStream(raw);
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ImageBuffer unScaledImage = new ImageBuffer(10, 10, 32, new BlenderBGRA());
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StaticData.Instance.LoadImageData(stream, unScaledImage);
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// If the source image (the one we downloaded) is more than twice as big as our dest image.
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while (unScaledImage.Width > Image.Width * 2)
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{
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// The image sampler we use is a 2x2 filter so we need to scale by a max of 1/2 if we want to get good results.
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// So we scale as many times as we need to to get the Image to be the right size.
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// If this were going to be a non-uniform scale we could do the x and y separately to get better results.
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ImageBuffer halfImage = new ImageBuffer(unScaledImage.Width / 2, unScaledImage.Height / 2, 32, scalingBlender);
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halfImage.NewGraphics2D().Render(unScaledImage, 0, 0, 0, halfImage.Width / (double)unScaledImage.Width, halfImage.Height / (double)unScaledImage.Height);
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unScaledImage = halfImage;
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}
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Image.NewGraphics2D().Render(unScaledImage, 0, 0, 0, Image.Width / (double)unScaledImage.Width, Image.Height / (double)unScaledImage.Height);
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Image.MarkImageChanged();
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Invalidate();
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if (LoadComplete != null)
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{
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LoadComplete(this, null);
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}
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}
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catch (Exception)
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{
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GuiWidget.BreakInDebugger();
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}
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}
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}
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} |