105 lines
2.7 KiB
C#
105 lines
2.7 KiB
C#
/*
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* Copyright (c) 2023 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.Drawing;
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using System.Drawing.Imaging;
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using System.IO;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Documents;
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using System.Windows.Interop;
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using System.Windows.Markup;
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using System.Windows.Media.Imaging;
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using SafeExamBrowser.Core.Contracts.Resources.Icons;
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using Brushes = System.Windows.Media.Brushes;
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using Image = System.Windows.Controls.Image;
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namespace SafeExamBrowser.UserInterface.Shared.Utilities
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{
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public static class IconResourceLoader
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{
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public static UIElement Load(IconResource resource)
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{
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try
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{
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switch (resource)
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{
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case BitmapIconResource bitmap:
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return LoadBitmapResource(bitmap);
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case EmbeddedIconResource embedded:
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return LoadEmbeddedResource(embedded);
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case NativeIconResource native:
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return LoadNativeResource(native);
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case XamlIconResource xaml:
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return LoadXamlResource(xaml);
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default:
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throw new NotSupportedException($"Application icon resource of type '{resource.GetType()}' is not supported!");
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}
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}
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catch (Exception)
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{
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return NotFoundSymbol();
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}
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}
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private static UIElement LoadBitmapResource(BitmapIconResource resource)
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{
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return new Image
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{
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Source = new BitmapImage(resource.Uri)
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};
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}
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private static UIElement LoadEmbeddedResource(EmbeddedIconResource resource)
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{
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using (var stream = new MemoryStream())
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{
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var bitmap = new BitmapImage();
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Icon.ExtractAssociatedIcon(resource.FilePath).ToBitmap().Save(stream, ImageFormat.Png);
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bitmap.BeginInit();
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bitmap.StreamSource = stream;
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bitmap.CacheOption = BitmapCacheOption.OnLoad;
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bitmap.EndInit();
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bitmap.Freeze();
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return new Image
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{
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Source = bitmap
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};
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}
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}
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private static UIElement LoadNativeResource(NativeIconResource resource)
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{
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return new Image
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{
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Source = Imaging.CreateBitmapSourceFromHIcon(resource.Handle, Int32Rect.Empty, BitmapSizeOptions.FromEmptyOptions())
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};
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}
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private static UIElement LoadXamlResource(XamlIconResource resource)
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{
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using (var stream = Application.GetResourceStream(resource.Uri)?.Stream)
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{
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return XamlReader.Load(stream) as UIElement;
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}
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}
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private static UIElement NotFoundSymbol()
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{
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return new TextBlock(new Run("X") { Foreground = Brushes.Red, FontWeight = FontWeights.Bold })
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{
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HorizontalAlignment = HorizontalAlignment.Center,
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VerticalAlignment = VerticalAlignment.Center
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};
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}
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}
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}
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