From 457832fbbe675a5d6724236c9cbd3aba2df6e3e6 Mon Sep 17 00:00:00 2001 From: CJKmkp <2564608840@qq.com> Date: Wed, 30 Jul 2025 20:06:29 +0800 Subject: [PATCH] =?UTF-8?q?improve:=E6=88=AA=E5=9B=BE=E5=8A=9F=E8=83=BD?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Windows/ScreenshotSelectorWindow.xaml | 60 +++++++ .../Windows/ScreenshotSelectorWindow.xaml.cs | 168 ++++++++++++++++++ 2 files changed, 228 insertions(+) create mode 100644 Ink Canvas/Windows/ScreenshotSelectorWindow.xaml create mode 100644 Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs diff --git a/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml b/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml new file mode 100644 index 00000000..75806d02 --- /dev/null +++ b/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml @@ -0,0 +1,60 @@ + + + + + + + + + + + + + + + + + + + + + + + diff --git a/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs b/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs new file mode 100644 index 00000000..d69f3bd6 --- /dev/null +++ b/Ink Canvas/Windows/ScreenshotSelectorWindow.xaml.cs @@ -0,0 +1,168 @@ +using System; +using System.Drawing; +using System.Windows; +using System.Windows.Controls; +using System.Windows.Input; +using System.Windows.Media; + +// 为了避免命名冲突，使用别名 +using WpfCanvas = System.Windows.Controls.Canvas; + +namespace Ink_Canvas +{ + public partial class ScreenshotSelectorWindow : Window + { + private bool _isSelecting = false; + private System.Windows.Point _startPoint; + private System.Windows.Point _currentPoint; + + public Rectangle? SelectedArea { get; private set; } + + public ScreenshotSelectorWindow() + { + InitializeComponent(); + + // 设置窗口覆盖所有屏幕 + SetupFullScreenOverlay(); + + // 隐藏提示文字的定时器 + var timer = new System.Windows.Threading.DispatcherTimer(); + timer.Interval = TimeSpan.FromSeconds(3); + timer.Tick += (s, e) => + { + HintText.Visibility = Visibility.Collapsed; + timer.Stop(); + }; + timer.Start(); + } + + private void SetupFullScreenOverlay() + { + // 获取所有屏幕的虚拟屏幕边界 + var virtualScreen = System.Windows.Forms.SystemInformation.VirtualScreen; + + // 转换为WPF坐标系统 + var dpiScale = GetDpiScale(); + + this.Left = virtualScreen.Left / dpiScale; + this.Top = virtualScreen.Top / dpiScale; + this.Width = virtualScreen.Width / dpiScale; + this.Height = virtualScreen.Height / dpiScale; + } + + private double GetDpiScale() + { + var source = PresentationSource.FromVisual(this); + if (source?.CompositionTarget != null) + { + return source.CompositionTarget.TransformToDevice.M11; + } + return 1.0; // 默认DPI + } + + private void Window_KeyDown(object sender, KeyEventArgs e) + { + if (e.Key == Key.Escape) + { + // 取消截图 + SelectedArea = null; + DialogResult = false; + Close(); + } + } + + private void Window_MouseLeftButtonDown(object sender, MouseButtonEventArgs e) + { + _isSelecting = true; + _startPoint = e.GetPosition(this); + _currentPoint = _startPoint; + + // 隐藏提示文字 + HintText.Visibility = Visibility.Collapsed; + + // 显示选择矩形 + SelectionRectangle.Visibility = Visibility.Visible; + SizeInfoBorder.Visibility = Visibility.Visible; + + // 捕获鼠标 + CaptureMouse(); + + UpdateSelection(); + } + + private void Window_MouseMove(object sender, MouseEventArgs e) + { + if (_isSelecting) + { + _currentPoint = e.GetPosition(this); + UpdateSelection(); + } + } + + private void Window_MouseLeftButtonUp(object sender, MouseButtonEventArgs e) + { + if (_isSelecting) + { + _isSelecting = false; + ReleaseMouseCapture(); + + // 计算选择区域 + var rect = GetSelectionRectangle(); + if (rect.Width > 5 && rect.Height > 5) // 最小尺寸检查 + { + // 转换为屏幕坐标，考虑DPI缩放 + var dpiScale = GetDpiScale(); + var virtualScreen = System.Windows.Forms.SystemInformation.VirtualScreen; + + // 计算实际屏幕坐标 + int screenX = (int)((rect.X * dpiScale) + virtualScreen.Left); + int screenY = (int)((rect.Y * dpiScale) + virtualScreen.Top); + int screenWidth = (int)(rect.Width * dpiScale); + int screenHeight = (int)(rect.Height * dpiScale); + + SelectedArea = new Rectangle(screenX, screenY, screenWidth, screenHeight); + DialogResult = true; + } + else + { + SelectedArea = null; + DialogResult = false; + } + + Close(); + } + } + + private void UpdateSelection() + { + var rect = GetSelectionRectangle(); + + // 更新选择矩形 + WpfCanvas.SetLeft(SelectionRectangle, rect.X); + WpfCanvas.SetTop(SelectionRectangle, rect.Y); + SelectionRectangle.Width = rect.Width; + SelectionRectangle.Height = rect.Height; + + // 更新尺寸信息 + SizeInfoText.Text = $"{(int)rect.Width} x {(int)rect.Height}"; + WpfCanvas.SetLeft(SizeInfoBorder, rect.X); + WpfCanvas.SetTop(SizeInfoBorder, rect.Y - 30); + + // 确保尺寸信息不超出屏幕 + if (WpfCanvas.GetTop(SizeInfoBorder) < 0) + { + WpfCanvas.SetTop(SizeInfoBorder, rect.Y + rect.Height + 5); + } + } + + private Rect GetSelectionRectangle() + { + double x = Math.Min(_startPoint.X, _currentPoint.X); + double y = Math.Min(_startPoint.Y, _currentPoint.Y); + double width = Math.Abs(_currentPoint.X - _startPoint.X); + double height = Math.Abs(_currentPoint.Y - _startPoint.Y); + + return new Rect(x, y, width, height); + } + } +}