460 lines
16 KiB
C#
460 lines
16 KiB
C#
using Microsoft.Win32;
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using System;
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using System.IO;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Threading;
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using Ink_Canvas.Helpers;
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namespace Ink_Canvas
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{
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public partial class MainWindow : Window
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{
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#region Image
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private async void BtnImageInsert_Click(object sender, RoutedEventArgs e)
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{
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OpenFileDialog openFileDialog = new OpenFileDialog();
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openFileDialog.Filter = "Image files (*.jpg; *.jpeg; *.png; *.bmp)|*.jpg;*.jpeg;*.png;*.bmp";
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if (openFileDialog.ShowDialog() == true)
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{
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string filePath = openFileDialog.FileName;
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Image image = await CreateAndCompressImageAsync(filePath);
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if (image != null)
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{
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string timestamp = "img_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
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image.Name = timestamp;
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CenterAndScaleElement(image);
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inkCanvas.Children.Add(image);
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timeMachine.CommitElementInsertHistory(image);
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}
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}
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}
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private async Task<Image> CreateAndCompressImageAsync(string filePath)
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{
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string savePath = Path.Combine(Settings.Automation.AutoSavedStrokesLocation, "File Dependency");
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if (!Directory.Exists(savePath))
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{
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Directory.CreateDirectory(savePath);
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}
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string fileExtension = Path.GetExtension(filePath);
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string timestamp = "img_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
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string newFilePath = Path.Combine(savePath, timestamp + fileExtension);
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await Task.Run(() => File.Copy(filePath, newFilePath, true));
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return await Dispatcher.InvokeAsync(() =>
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{
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BitmapImage bitmapImage = new BitmapImage();
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bitmapImage.BeginInit();
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bitmapImage.UriSource = new Uri(newFilePath);
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bitmapImage.CacheOption = BitmapCacheOption.OnLoad;
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bitmapImage.EndInit();
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int width = bitmapImage.PixelWidth;
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int height = bitmapImage.PixelHeight;
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Image image = new Image();
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// 设置拉伸模式为Fill，支持任意比例缩放
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image.Stretch = Stretch.Fill;
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if (isLoaded && Settings.Canvas.IsCompressPicturesUploaded && (width > 1920 || height > 1080))
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{
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double scaleX = 1920.0 / width;
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double scaleY = 1080.0 / height;
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double scale = Math.Min(scaleX, scaleY);
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TransformedBitmap transformedBitmap = new TransformedBitmap(bitmapImage, new ScaleTransform(scale, scale));
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image.Source = transformedBitmap;
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image.Width = transformedBitmap.PixelWidth;
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image.Height = transformedBitmap.PixelHeight;
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}
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else
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{
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image.Source = bitmapImage;
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image.Width = width;
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image.Height = height;
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}
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return image;
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});
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}
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#endregion
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#region Media
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private async void BtnMediaInsert_Click(object sender, RoutedEventArgs e)
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{
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OpenFileDialog openFileDialog = new OpenFileDialog();
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openFileDialog.Filter = "Media files (*.mp4; *.avi; *.wmv)|*.mp4;*.avi;*.wmv";
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if (openFileDialog.ShowDialog() == true)
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{
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string filePath = openFileDialog.FileName;
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byte[] mediaBytes = await Task.Run(() => File.ReadAllBytes(filePath));
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MediaElement mediaElement = await CreateMediaElementAsync(filePath);
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if (mediaElement != null)
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{
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CenterAndScaleElement(mediaElement);
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InkCanvas.SetLeft(mediaElement, 0);
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InkCanvas.SetTop(mediaElement, 0);
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inkCanvas.Children.Add(mediaElement);
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mediaElement.LoadedBehavior = MediaState.Manual;
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mediaElement.UnloadedBehavior = MediaState.Manual;
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mediaElement.Loaded += async (_, args) =>
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{
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mediaElement.Play();
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await Task.Delay(100);
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mediaElement.Pause();
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};
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timeMachine.CommitElementInsertHistory(mediaElement);
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}
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}
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}
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private async Task<MediaElement> CreateMediaElementAsync(string filePath)
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{
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string savePath = Path.Combine(Settings.Automation.AutoSavedStrokesLocation, "File Dependency");
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if (!Directory.Exists(savePath))
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{
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Directory.CreateDirectory(savePath);
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}
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return await Dispatcher.InvokeAsync(() =>
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{
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MediaElement mediaElement = new MediaElement();
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mediaElement.Source = new Uri(filePath);
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string timestamp = "media_" + DateTime.Now.ToString("yyyyMMdd_HH_mm_ss_fff");
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mediaElement.Name = timestamp;
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mediaElement.LoadedBehavior = MediaState.Manual;
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mediaElement.UnloadedBehavior = MediaState.Manual;
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mediaElement.Width = 256;
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mediaElement.Height = 256;
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string fileExtension = Path.GetExtension(filePath);
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string newFilePath = Path.Combine(savePath, mediaElement.Name + fileExtension);
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File.Copy(filePath, newFilePath, true);
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mediaElement.Source = new Uri(newFilePath);
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return mediaElement;
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});
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}
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#endregion
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#region Image Operations
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/// <summary>
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/// 旋转图片
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/// </summary>
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/// <param name="image">要旋转的图片</param>
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/// <param name="angle">旋转角度（正数为顺时针，负数为逆时针）</param>
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private void RotateImage(Image image, double angle)
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{
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if (image == null) return;
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try
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{
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// 获取当前的变换
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var transformGroup = image.RenderTransform as TransformGroup ?? new TransformGroup();
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// 查找现有的旋转变换
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RotateTransform rotateTransform = null;
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foreach (Transform transform in transformGroup.Children)
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{
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if (transform is RotateTransform rt)
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{
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rotateTransform = rt;
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break;
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}
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}
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// 如果没有旋转变换，创建一个新的
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if (rotateTransform == null)
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{
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rotateTransform = new RotateTransform();
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transformGroup.Children.Add(rotateTransform);
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}
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// 设置旋转中心为图片中心
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rotateTransform.CenterX = image.ActualWidth / 2;
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rotateTransform.CenterY = image.ActualHeight / 2;
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// 累加旋转角度
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rotateTransform.Angle = (rotateTransform.Angle + angle) % 360;
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// 应用变换
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image.RenderTransform = transformGroup;
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// 提交到时间机器以支持撤销
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// 注意：旋转操作目前不支持撤销，因为需要更复杂的历史记录机制
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"旋转图片时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 克隆图片
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/// </summary>
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/// <param name="image">要克隆的图片</param>
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private void CloneImage(Image image)
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{
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if (image == null) return;
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try
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{
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// 创建图片的副本
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var clonedImage = new Image
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{
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Source = image.Source,
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Width = image.Width,
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Height = image.Height,
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Stretch = image.Stretch,
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RenderTransform = image.RenderTransform?.Clone() as Transform
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};
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// 设置位置，稍微偏移以避免重叠
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InkCanvas.SetLeft(clonedImage, InkCanvas.GetLeft(image) + 20);
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InkCanvas.SetTop(clonedImage, InkCanvas.GetTop(image) + 20);
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// 添加到画布
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inkCanvas.Children.Add(clonedImage);
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// 提交到时间机器以支持撤销
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timeMachine.CommitElementInsertHistory(clonedImage);
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"克隆图片时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 克隆图片到新页面
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/// </summary>
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/// <param name="image">要克隆的图片</param>
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private void CloneImageToNewBoard(Image image)
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{
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if (image == null) return;
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try
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{
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// 创建图片的副本
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var clonedImage = new Image
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{
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Source = image.Source,
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Width = image.Width,
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Height = image.Height,
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Stretch = image.Stretch,
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RenderTransform = image.RenderTransform?.Clone() as Transform
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};
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// 设置位置，稍微偏移以避免重叠
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InkCanvas.SetLeft(clonedImage, InkCanvas.GetLeft(image) + 20);
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InkCanvas.SetTop(clonedImage, InkCanvas.GetTop(image) + 20);
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// 创建新页面
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BtnWhiteBoardAdd_Click(null, null);
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// 添加到新页面的画布
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inkCanvas.Children.Add(clonedImage);
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// 提交到时间机器以支持撤销
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timeMachine.CommitElementInsertHistory(clonedImage);
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"克隆图片到新页面时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 缩放图片
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/// </summary>
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/// <param name="image">要缩放的图片</param>
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/// <param name="scaleFactor">缩放因子（大于1为放大，小于1为缩小）</param>
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private void ScaleImage(Image image, double scaleFactor)
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{
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if (image == null) return;
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try
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{
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// 获取当前的变换
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var transformGroup = image.RenderTransform as TransformGroup ?? new TransformGroup();
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// 查找现有的缩放变换
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ScaleTransform scaleTransform = null;
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foreach (Transform transform in transformGroup.Children)
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{
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if (transform is ScaleTransform st)
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{
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scaleTransform = st;
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break;
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}
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}
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// 如果没有缩放变换，创建一个新的
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if (scaleTransform == null)
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{
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scaleTransform = new ScaleTransform();
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transformGroup.Children.Add(scaleTransform);
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}
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// 设置缩放中心为图片中心
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scaleTransform.CenterX = image.ActualWidth / 2;
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scaleTransform.CenterY = image.ActualHeight / 2;
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// 应用缩放因子
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scaleTransform.ScaleX *= scaleFactor;
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scaleTransform.ScaleY *= scaleFactor;
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// 应用变换
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image.RenderTransform = transformGroup;
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// 提交到时间机器以支持撤销
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// 注意：缩放操作目前不支持撤销，因为需要更复杂的历史记录机制
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"缩放图片时发生错误: {ex.Message}");
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}
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}
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/// <summary>
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/// 删除图片
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/// </summary>
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/// <param name="image">要删除的图片</param>
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private void DeleteImage(Image image)
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{
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if (image == null) return;
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try
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{
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// 从画布中移除图片
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if (inkCanvas.Children.Contains(image))
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{
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inkCanvas.Children.Remove(image);
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// 提交到时间机器以支持撤销
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timeMachine.CommitElementRemoveHistory(image);
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}
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}
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catch (Exception ex)
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{
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// 记录错误但不中断程序
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System.Diagnostics.Debug.WriteLine($"删除图片时发生错误: {ex.Message}");
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}
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}
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#endregion
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private void CenterAndScaleElement(FrameworkElement element)
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{
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try
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{
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// 确保元素已加载且有有效尺寸
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if (element == null || element.ActualWidth <= 0 || element.ActualHeight <= 0)
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{
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// 如果元素尺寸无效，等待加载完成后再处理
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element.Loaded += (sender, e) =>
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{
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Dispatcher.BeginInvoke(new Action(() =>
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{
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CenterAndScaleElement(element);
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}), System.Windows.Threading.DispatcherPriority.Loaded);
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};
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return;
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}
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// 获取画布的实际尺寸
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double canvasWidth = inkCanvas.ActualWidth;
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double canvasHeight = inkCanvas.ActualHeight;
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// 如果画布尺寸为0，使用窗口尺寸作为备选
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if (canvasWidth <= 0 || canvasHeight <= 0)
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{
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canvasWidth = this.ActualWidth;
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canvasHeight = this.ActualHeight;
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}
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// 如果仍然为0，使用屏幕尺寸
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if (canvasWidth <= 0 || canvasHeight <= 0)
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{
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canvasWidth = SystemParameters.PrimaryScreenWidth;
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canvasHeight = SystemParameters.PrimaryScreenHeight;
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}
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// 计算最大允许尺寸（画布的70%）
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double maxWidth = canvasWidth * 0.7;
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double maxHeight = canvasHeight * 0.7;
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// 获取元素的当前尺寸
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double elementWidth = element.ActualWidth;
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double elementHeight = element.ActualHeight;
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// 计算缩放比例
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double scaleX = maxWidth / elementWidth;
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double scaleY = maxHeight / elementHeight;
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double scale = Math.Min(scaleX, scaleY);
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// 如果元素本身比最大尺寸小，不进行缩放
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if (scale > 1.0)
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{
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scale = 1.0;
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}
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// 计算新的尺寸
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double newWidth = elementWidth * scale;
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double newHeight = elementHeight * scale;
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// 设置元素尺寸
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element.Width = newWidth;
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element.Height = newHeight;
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// 计算居中位置
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double centerX = (canvasWidth - newWidth) / 2;
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double centerY = (canvasHeight - newHeight) / 2;
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// 确保位置不为负数
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centerX = Math.Max(0, centerX);
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centerY = Math.Max(0, centerY);
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// 设置位置
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InkCanvas.SetLeft(element, centerX);
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InkCanvas.SetTop(element, centerY);
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// 清除任何现有的RenderTransform
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element.RenderTransform = Transform.Identity;
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LogHelper.WriteLogToFile($"元素居中完成: 位置({centerX}, {centerY}), 尺寸({newWidth}x{newHeight})");
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}
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catch (Exception ex)
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{
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LogHelper.WriteLogToFile($"元素居中失败: {ex.Message}", LogHelper.LogType.Error);
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}
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}
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}
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}
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