129 lines
3.7 KiB
C#
129 lines
3.7 KiB
C#
using System;
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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.Input;
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using System.Windows.Media.Imaging;
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using HandyControl.Data;
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using HandyControl.Interactivity;
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namespace HandyControl.Controls
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{
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/// <summary>
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/// 图片浏览器
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/// </summary>
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[TemplatePart(Name = ElementGridTop, Type = typeof(Grid))]
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[TemplatePart(Name = ElementImageViewer, Type = typeof(ImageViewer))]
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public class ImageBrowser : Window
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{
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#region Constants
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private const string ElementGridTop = "PART_GridTop";
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private const string ElementImageViewer = "PART_ImageViewer";
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#endregion Constants
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#region Data
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private Grid _gridTop;
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private ImageViewer _imageViewer;
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#endregion Data
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static ImageBrowser()
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{
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IsFullScreenProperty.AddOwner(typeof(ImageBrowser), new PropertyMetadata(ValueBoxes.FalseBox));
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}
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public ImageBrowser()
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{
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CommandBindings.Add(new CommandBinding(ControlCommands.Close, ButtonClose_OnClick));
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WindowStartupLocation = WindowStartupLocation.CenterScreen;
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WindowStyle = WindowStyle.None;
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AllowsTransparency = true;
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}
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/// <summary>
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/// 带一个图片Uri的构造函数
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/// </summary>
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/// <param name="uri"></param>
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public ImageBrowser(Uri uri) : this()
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{
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Loaded += (s, e) =>
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{
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try
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{
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_imageViewer.ImageSource = BitmapFrame.Create(uri);
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_imageViewer.ImgPath = uri.AbsolutePath;
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if (File.Exists(_imageViewer.ImgPath))
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{
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var info = new FileInfo(_imageViewer.ImgPath);
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_imageViewer.ImgSize = info.Length;
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}
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}
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catch
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{
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MessageBox.Show(Properties.Langs.Lang.ErrorImgPath);
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}
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};
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}
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/// <summary>
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/// 带一个图片路径的构造函数
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/// </summary>
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/// <param name="path"></param>
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public ImageBrowser(string path) : this(new Uri(path))
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{
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}
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public override void OnApplyTemplate()
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{
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if (_gridTop != null)
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{
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_gridTop.MouseLeftButtonDown -= GridTop_OnMouseLeftButtonDown;
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}
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if (_imageViewer != null)
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{
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_imageViewer.MouseLeftButtonDown -= ImageViewer_MouseLeftButtonDown;
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}
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base.OnApplyTemplate();
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_gridTop = GetTemplateChild(ElementGridTop) as Grid;
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_imageViewer = GetTemplateChild(ElementImageViewer) as ImageViewer;
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if (_gridTop != null)
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{
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_gridTop.MouseLeftButtonDown += GridTop_OnMouseLeftButtonDown;
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}
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if (_imageViewer != null)
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{
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_imageViewer.MouseLeftButtonDown += ImageViewer_MouseLeftButtonDown;
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}
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}
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private void ButtonClose_OnClick(object sender, RoutedEventArgs e) => Close();
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private void GridTop_OnMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (e.LeftButton == MouseButtonState.Pressed)
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{
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DragMove();
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}
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}
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private void ImageViewer_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
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{
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if (e.LeftButton == MouseButtonState.Pressed && !(_imageViewer.ImageWidth > ActualWidth || _imageViewer.ImageHeight > ActualHeight))
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{
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DragMove();
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}
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}
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}
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} |