955 lines
39 KiB
C#
955 lines
39 KiB
C#
using iNKORE.UI.WPF.Modern.Controls;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Ink;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Shapes;
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using Ink_Canvas.Helpers;
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using Point = System.Windows.Point;
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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 Floating Control
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private object lastBorderMouseDownObject;
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private void Border_MouseDown(object sender, MouseButtonEventArgs e)
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{
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// 如果发送者是 RandomDrawPanel 或 SingleDrawPanel，且它们被隐藏，则不处理事件
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if (sender is SimpleStackPanel panel)
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{
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if ((panel == RandomDrawPanel || panel == SingleDrawPanel) &&
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panel.Visibility != Visibility.Visible)
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{
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return;
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}
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}
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lastBorderMouseDownObject = sender;
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}
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private bool isStrokeSelectionCloneOn;
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private void BorderStrokeSelectionClone_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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if (isStrokeSelectionCloneOn)
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{
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BorderStrokeSelectionClone.Background = Brushes.Transparent;
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isStrokeSelectionCloneOn = false;
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}
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else
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{
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BorderStrokeSelectionClone.Background = new SolidColorBrush(StringToColor("#FF1ED760"));
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isStrokeSelectionCloneOn = true;
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}
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}
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private void BorderStrokeSelectionCloneToNewBoard_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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var strokes = inkCanvas.GetSelectedStrokes();
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inkCanvas.Select(new StrokeCollection());
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strokes = strokes.Clone();
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BtnWhiteBoardAdd_Click(null, null);
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inkCanvas.Strokes.Add(strokes);
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}
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private void BorderStrokeSelectionDelete_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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SymbolIconDelete_MouseUp(sender, e);
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}
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private void GridPenWidthDecrease_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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ChangeStrokeThickness(0.8);
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}
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private void GridPenWidthIncrease_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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ChangeStrokeThickness(1.25);
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}
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private void ChangeStrokeThickness(double multipler)
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{
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foreach (var stroke in inkCanvas.GetSelectedStrokes())
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{
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var newWidth = stroke.DrawingAttributes.Width * multipler;
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var newHeight = stroke.DrawingAttributes.Height * multipler;
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if (!(newWidth >= DrawingAttributes.MinWidth) || !(newWidth <= DrawingAttributes.MaxWidth)
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|| !(newHeight >= DrawingAttributes.MinHeight) ||
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!(newHeight <= DrawingAttributes.MaxHeight)) continue;
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stroke.DrawingAttributes.Width = newWidth;
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stroke.DrawingAttributes.Height = newHeight;
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}
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if (DrawingAttributesHistory.Count > 0)
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{
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timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
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DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
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foreach (var item in DrawingAttributesHistoryFlag)
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{
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item.Value.Clear();
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}
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}
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}
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private void GridPenWidthRestore_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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foreach (var stroke in inkCanvas.GetSelectedStrokes())
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{
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stroke.DrawingAttributes.Width = inkCanvas.DefaultDrawingAttributes.Width;
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stroke.DrawingAttributes.Height = inkCanvas.DefaultDrawingAttributes.Height;
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}
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}
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private void ImageFlipHorizontal_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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var m = new Matrix();
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// Find center of element and then transform to get current location of center
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var fe = e.Source as FrameworkElement;
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var center = new Point(fe.ActualWidth / 2, fe.ActualHeight / 2);
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center = new Point(inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Width / 2,
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inkCanvas.GetSelectionBounds().Top + inkCanvas.GetSelectionBounds().Height / 2);
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center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
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// Update matrix to reflect translation/rotation
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m.ScaleAt(-1, 1, center.X, center.Y); // 缩放
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var targetStrokes = inkCanvas.GetSelectedStrokes();
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foreach (var stroke in targetStrokes) stroke.Transform(m, false);
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if (DrawingAttributesHistory.Count > 0)
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{
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//var collecion = new StrokeCollection();
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//foreach (var item in DrawingAttributesHistory)
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//{
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// collecion.Add(item.Key);
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//}
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timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
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DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
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foreach (var item in DrawingAttributesHistoryFlag)
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{
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item.Value.Clear();
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}
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}
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//updateBorderStrokeSelectionControlLocation();
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}
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private void ImageFlipVertical_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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var m = new Matrix();
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// Find center of element and then transform to get current location of center
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var fe = e.Source as FrameworkElement;
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var center = new Point(fe.ActualWidth / 2, fe.ActualHeight / 2);
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center = new Point(inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Width / 2,
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inkCanvas.GetSelectionBounds().Top + inkCanvas.GetSelectionBounds().Height / 2);
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center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
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// Update matrix to reflect translation/rotation
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m.ScaleAt(1, -1, center.X, center.Y); // 缩放
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var targetStrokes = inkCanvas.GetSelectedStrokes();
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foreach (var stroke in targetStrokes) stroke.Transform(m, false);
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if (DrawingAttributesHistory.Count > 0)
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{
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timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
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DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
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foreach (var item in DrawingAttributesHistoryFlag)
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{
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item.Value.Clear();
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}
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}
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}
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// ... existing code ...
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private void ImageRotate45_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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var m = new Matrix();
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// Find center of element and then transform to get current location of center
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var fe = e.Source as FrameworkElement;
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var center = new Point(fe.ActualWidth / 2, fe.ActualHeight / 2);
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center = new Point(inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Width / 2,
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inkCanvas.GetSelectionBounds().Top + inkCanvas.GetSelectionBounds().Height / 2);
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center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
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// Update matrix to reflect translation/rotation
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m.RotateAt(45, center.X, center.Y); // 顺时针旋转45度
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var targetStrokes = inkCanvas.GetSelectedStrokes();
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foreach (var stroke in targetStrokes) stroke.Transform(m, false);
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if (DrawingAttributesHistory.Count > 0)
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{
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timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
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DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
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foreach (var item in DrawingAttributesHistoryFlag)
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{
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item.Value.Clear();
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}
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}
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}
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private void ImageRotate90_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (lastBorderMouseDownObject != sender) return;
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var m = new Matrix();
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// Find center of element and then transform to get current location of center
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var fe = e.Source as FrameworkElement;
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var center = new Point(fe.ActualWidth / 2, fe.ActualHeight / 2);
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center = new Point(inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Width / 2,
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inkCanvas.GetSelectionBounds().Top + inkCanvas.GetSelectionBounds().Height / 2);
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center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
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// Update matrix to reflect translation/rotation
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m.RotateAt(90, center.X, center.Y); // 旋转
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var targetStrokes = inkCanvas.GetSelectedStrokes();
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foreach (var stroke in targetStrokes) stroke.Transform(m, false);
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if (DrawingAttributesHistory.Count > 0)
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{
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var collecion = new StrokeCollection();
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foreach (var item in DrawingAttributesHistory)
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{
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collecion.Add(item.Key);
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}
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timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
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DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
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foreach (var item in DrawingAttributesHistoryFlag)
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{
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item.Value.Clear();
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}
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}
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}
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#endregion
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private bool isGridInkCanvasSelectionCoverMouseDown;
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private bool isStrokeDragging = false;
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private Point strokeDragStartPoint;
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private StrokeCollection StrokesSelectionClone = new StrokeCollection();
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// 选择框和选择点相关变量
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private bool isResizing = false;
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private string currentResizeHandle = "";
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private Point resizeStartPoint;
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private Rect originalSelectionBounds;
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private void GridInkCanvasSelectionCover_MouseDown(object sender, MouseButtonEventArgs e)
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{
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isGridInkCanvasSelectionCoverMouseDown = true;
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// 检查是否有选中的墨迹
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if (inkCanvas.GetSelectedStrokes().Count > 0)
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{
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// 获取鼠标点击位置
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var clickPoint = e.GetPosition(inkCanvas);
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var selectionBounds = inkCanvas.GetSelectionBounds();
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// 检查点击位置是否在选择框边界内
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if (clickPoint.X >= selectionBounds.Left &&
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clickPoint.X <= selectionBounds.Right &&
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clickPoint.Y >= selectionBounds.Top &&
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clickPoint.Y <= selectionBounds.Bottom)
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{
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// 只有在选择框边界内才允许拖动
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isStrokeDragging = true;
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strokeDragStartPoint = clickPoint;
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GridInkCanvasSelectionCover.CaptureMouse();
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GridInkCanvasSelectionCover.Cursor = Cursors.SizeAll;
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}
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else
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{
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// 点击在选择框外，取消选择
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inkCanvas.Select(new StrokeCollection());
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GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
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}
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}
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}
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private void GridInkCanvasSelectionCover_MouseMove(object sender, MouseEventArgs e)
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{
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if (!isGridInkCanvasSelectionCoverMouseDown) return;
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// 如果正在拖动墨迹，执行拖动操作
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if (isStrokeDragging && GridInkCanvasSelectionCover.IsMouseCaptured)
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{
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var currentPoint = e.GetPosition(inkCanvas);
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var delta = currentPoint - strokeDragStartPoint;
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// 创建变换矩阵
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var matrix = new Matrix();
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matrix.Translate(delta.X, delta.Y);
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// 对选中的墨迹应用变换
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var selectedStrokes = inkCanvas.GetSelectedStrokes();
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foreach (var stroke in selectedStrokes)
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{
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stroke.Transform(matrix, false);
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}
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// 更新选中栏位置
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updateBorderStrokeSelectionControlLocation();
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// 更新起始点
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strokeDragStartPoint = currentPoint;
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}
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else if (inkCanvas.GetSelectedStrokes().Count > 0)
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{
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// 当鼠标在选中区域移动时，更新墨迹选中栏位置
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updateBorderStrokeSelectionControlLocation();
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}
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}
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private void GridInkCanvasSelectionCover_MouseUp(object sender, MouseButtonEventArgs e)
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{
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if (!isGridInkCanvasSelectionCoverMouseDown) return;
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// 结束墨迹拖动
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if (isStrokeDragging)
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{
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isStrokeDragging = false;
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GridInkCanvasSelectionCover.ReleaseMouseCapture();
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GridInkCanvasSelectionCover.Cursor = Cursors.Arrow;
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}
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isGridInkCanvasSelectionCoverMouseDown = false;
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// 只有在没有选中墨迹时才隐藏选中栏
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if (inkCanvas.GetSelectedStrokes().Count == 0)
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{
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GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
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}
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}
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private void BtnSelect_Click(object sender, RoutedEventArgs e)
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{
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ExitMultiTouchModeIfNeeded();
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forceEraser = true;
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drawingShapeMode = 0;
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inkCanvas.IsManipulationEnabled = false;
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if (inkCanvas.EditingMode == InkCanvasEditingMode.Select)
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{
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if (inkCanvas.GetSelectedStrokes().Count == inkCanvas.Strokes.Count)
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{
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// 使用集中化的工具模式切换方法
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SetCurrentToolMode(InkCanvasEditingMode.Ink,
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() => { SetCurrentToolMode(InkCanvasEditingMode.Select); });
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}
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else
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{
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var selectedStrokes = new StrokeCollection();
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foreach (var stroke in inkCanvas.Strokes)
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if (stroke.GetBounds().Width > 0 && stroke.GetBounds().Height > 0)
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selectedStrokes.Add(stroke);
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inkCanvas.Select(selectedStrokes);
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}
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}
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else
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{
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// 使用集中化的工具模式切换方法
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SetCurrentToolMode(InkCanvasEditingMode.Select);
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}
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}
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private double BorderStrokeSelectionControlWidth = 490.0;
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private double BorderStrokeSelectionControlHeight = 80.0;
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private bool isProgramChangeStrokeSelection;
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private void inkCanvas_SelectionChanged(object sender, EventArgs e)
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{
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if (isProgramChangeStrokeSelection) return;
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// 优先检查墨迹选择状态
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if (inkCanvas.GetSelectedStrokes().Count > 0)
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{
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// 有墨迹被选中，清除图片选择状态
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if (currentSelectedElement != null)
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{
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currentSelectedElement = null;
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// 隐藏图片选择工具栏
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if (BorderImageSelectionControl != null)
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{
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BorderImageSelectionControl.Visibility = Visibility.Collapsed;
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}
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}
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// 显示墨迹选择栏和选择框
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GridInkCanvasSelectionCover.Visibility = Visibility.Visible;
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BorderStrokeSelectionClone.Background = Brushes.Transparent;
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isStrokeSelectionCloneOn = false;
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updateBorderStrokeSelectionControlLocation();
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UpdateSelectionDisplay();
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return;
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}
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// 检查是否有图片元素被选中（通过InkCanvas的选中元素）
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var selectedElements = inkCanvas.GetSelectedElements();
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bool hasImageElement = selectedElements.Any(element => element is Image);
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// 如果有图片元素被选中，不显示选择框
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if (hasImageElement)
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{
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GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
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HideSelectionDisplay();
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return;
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}
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// 检查是否有图片元素被选中（通过currentSelectedElement）
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if (currentSelectedElement != null && currentSelectedElement is Image)
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{
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GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
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HideSelectionDisplay();
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return;
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}
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// 没有选中任何内容，隐藏选择框
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GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
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HideSelectionDisplay();
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}
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private void updateBorderStrokeSelectionControlLocation()
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{
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var borderLeft = (inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Right -
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BorderStrokeSelectionControlWidth) / 2;
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var borderTop = inkCanvas.GetSelectionBounds().Bottom + 10; // 在墨迹下方10像素处显示
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if (borderLeft < 0) borderLeft = 0;
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if (borderTop < 0) borderTop = 0;
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if (Width - borderLeft < BorderStrokeSelectionControlWidth || double.IsNaN(borderLeft))
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borderLeft = Width - BorderStrokeSelectionControlWidth;
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if (Height - borderTop < BorderStrokeSelectionControlHeight || double.IsNaN(borderTop))
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borderTop = Height - BorderStrokeSelectionControlHeight;
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// 确保墨迹选中栏始终显示在墨迹下方
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// 如果选中栏会超出屏幕底部，则显示在墨迹上方
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if (borderTop + BorderStrokeSelectionControlHeight > Height)
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{
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borderTop = inkCanvas.GetSelectionBounds().Top - BorderStrokeSelectionControlHeight - 10;
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if (borderTop < 0) borderTop = 10; // 如果上方也没有空间，则显示在顶部
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}
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BorderStrokeSelectionControl.Margin = new Thickness(borderLeft, borderTop, 0, 0);
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}
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private void GridInkCanvasSelectionCover_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
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{
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e.Mode = ManipulationModes.All;
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}
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private void GridInkCanvasSelectionCover_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
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{
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if (StrokeManipulationHistory?.Count > 0)
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{
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timeMachine.CommitStrokeManipulationHistory(StrokeManipulationHistory);
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foreach (var item in StrokeManipulationHistory)
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{
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StrokeInitialHistory[item.Key] = item.Value.Item2;
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}
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StrokeManipulationHistory = null;
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}
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if (DrawingAttributesHistory.Count > 0)
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{
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timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
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DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
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foreach (var item in DrawingAttributesHistoryFlag)
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{
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item.Value.Clear();
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}
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}
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}
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private void GridInkCanvasSelectionCover_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
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{
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try
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{
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if (dec.Count >= 1)
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{
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bool disableScale = dec.Count >= 3;
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var md = e.DeltaManipulation;
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var trans = md.Translation; // 获得位移矢量
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var rotate = md.Rotation; // 获得旋转角度
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var scale = md.Scale; // 获得缩放倍数
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var m = new Matrix();
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// Find center of element and then transform to get current location of center
|
||
var fe = e.Source as FrameworkElement;
|
||
var center = new Point(fe.ActualWidth / 2, fe.ActualHeight / 2);
|
||
center = new Point(inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Width / 2,
|
||
inkCanvas.GetSelectionBounds().Top + inkCanvas.GetSelectionBounds().Height / 2);
|
||
center = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
|
||
|
||
// Update matrix to reflect translation/rotation
|
||
m.Translate(trans.X, trans.Y); // 移动
|
||
if (!disableScale)
|
||
m.ScaleAt(scale.X, scale.Y, center.X, center.Y); // 缩放
|
||
|
||
var strokes = inkCanvas.GetSelectedStrokes();
|
||
if (StrokesSelectionClone.Count != 0)
|
||
strokes = StrokesSelectionClone;
|
||
else if (Settings.Gesture.IsEnableTwoFingerRotationOnSelection)
|
||
m.RotateAt(rotate, center.X, center.Y); // 旋转
|
||
|
||
// 应用变换到选中的墨迹
|
||
foreach (var stroke in strokes)
|
||
{
|
||
stroke.Transform(m, false);
|
||
}
|
||
|
||
updateBorderStrokeSelectionControlLocation();
|
||
}
|
||
}
|
||
catch (Exception ex)
|
||
{
|
||
LogHelper.WriteLogToFile($"墨迹ManipulationDelta错误: {ex.Message}", LogHelper.LogType.Error);
|
||
}
|
||
}
|
||
|
||
private void GridInkCanvasSelectionCover_TouchDown(object sender, TouchEventArgs e)
|
||
{
|
||
}
|
||
|
||
private void GridInkCanvasSelectionCover_TouchUp(object sender, TouchEventArgs e)
|
||
{
|
||
}
|
||
|
||
private void GridInkCanvasSelectionCover_TouchMove(object sender, TouchEventArgs e)
|
||
{
|
||
// 处理触摸移动事件 - 用于拖动选中的墨迹
|
||
if (inkCanvas.GetSelectedStrokes().Count > 0 && dec.Count == 1)
|
||
{
|
||
var currentTouchPoint = e.GetTouchPoint(inkCanvas).Position;
|
||
|
||
// 检查是否有有效的起始触摸点
|
||
if (lastTouchPointOnGridInkCanvasCover != new Point(0, 0))
|
||
{
|
||
var delta = currentTouchPoint - lastTouchPointOnGridInkCanvasCover;
|
||
|
||
// 只有当移动距离足够大时才进行拖动（避免微小移动造成的抖动）
|
||
if (Math.Abs(delta.X) > 1 || Math.Abs(delta.Y) > 1)
|
||
{
|
||
// 创建变换矩阵
|
||
var matrix = new Matrix();
|
||
matrix.Translate(delta.X, delta.Y);
|
||
|
||
// 对选中的墨迹应用变换
|
||
var selectedStrokes = inkCanvas.GetSelectedStrokes();
|
||
foreach (var stroke in selectedStrokes)
|
||
{
|
||
stroke.Transform(matrix, false);
|
||
}
|
||
|
||
// 更新选中栏位置
|
||
updateBorderStrokeSelectionControlLocation();
|
||
|
||
// 更新最后触摸点
|
||
lastTouchPointOnGridInkCanvasCover = currentTouchPoint;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
private void GridInkCanvasSelectionCover_PreviewTouchMove(object sender, TouchEventArgs e)
|
||
{
|
||
// 预览触摸移动事件 - 用于更精确的触摸处理
|
||
if (inkCanvas.GetSelectedStrokes().Count > 0 && dec.Count == 1)
|
||
{
|
||
var currentTouchPoint = e.GetTouchPoint(inkCanvas).Position;
|
||
|
||
// 检查是否有有效的起始触摸点
|
||
if (lastTouchPointOnGridInkCanvasCover != new Point(0, 0))
|
||
{
|
||
var delta = currentTouchPoint - lastTouchPointOnGridInkCanvasCover;
|
||
|
||
// 只有当移动距离足够大时才进行拖动（避免微小移动造成的抖动）
|
||
if (Math.Abs(delta.X) > 1 || Math.Abs(delta.Y) > 1)
|
||
{
|
||
// 创建变换矩阵
|
||
var matrix = new Matrix();
|
||
matrix.Translate(delta.X, delta.Y);
|
||
|
||
// 对选中的墨迹应用变换
|
||
var selectedStrokes = inkCanvas.GetSelectedStrokes();
|
||
foreach (var stroke in selectedStrokes)
|
||
{
|
||
stroke.Transform(matrix, false);
|
||
}
|
||
|
||
// 更新选中栏位置
|
||
updateBorderStrokeSelectionControlLocation();
|
||
|
||
// 更新最后触摸点
|
||
lastTouchPointOnGridInkCanvasCover = currentTouchPoint;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
private Point lastTouchPointOnGridInkCanvasCover = new Point(0, 0);
|
||
|
||
private void GridInkCanvasSelectionCover_PreviewTouchDown(object sender, TouchEventArgs e)
|
||
{
|
||
dec.Add(e.TouchDevice.Id);
|
||
//设备1个的时候，记录中心点
|
||
if (dec.Count == 1)
|
||
{
|
||
var touchPoint = e.GetTouchPoint(null);
|
||
centerPoint = touchPoint.Position;
|
||
lastTouchPointOnGridInkCanvasCover = e.GetTouchPoint(inkCanvas).Position;
|
||
|
||
// 检查是否有选中的墨迹
|
||
if (inkCanvas.GetSelectedStrokes().Count > 0)
|
||
{
|
||
// 获取触摸点位置
|
||
var touchPosition = e.GetTouchPoint(inkCanvas).Position;
|
||
var selectionBounds = inkCanvas.GetSelectionBounds();
|
||
|
||
// 检查触摸位置是否在选择框边界内
|
||
if (touchPosition.X >= selectionBounds.Left &&
|
||
touchPosition.X <= selectionBounds.Right &&
|
||
touchPosition.Y >= selectionBounds.Top &&
|
||
touchPosition.Y <= selectionBounds.Bottom)
|
||
{
|
||
// 只有在选择框边界内才允许拖动
|
||
// 触摸拖动状态已通过TouchMove事件处理
|
||
}
|
||
else
|
||
{
|
||
// 触摸在选择框外，取消选择
|
||
inkCanvas.Select(new StrokeCollection());
|
||
GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (isStrokeSelectionCloneOn)
|
||
{
|
||
var strokes = inkCanvas.GetSelectedStrokes();
|
||
isProgramChangeStrokeSelection = true;
|
||
inkCanvas.Select(new StrokeCollection());
|
||
StrokesSelectionClone = strokes.Clone();
|
||
inkCanvas.Select(strokes);
|
||
isProgramChangeStrokeSelection = false;
|
||
inkCanvas.Strokes.Add(StrokesSelectionClone);
|
||
}
|
||
else
|
||
{
|
||
// 新增：启动套索选择模式
|
||
// 使用集中化的工具模式切换方法
|
||
SetCurrentToolMode(InkCanvasEditingMode.Select);
|
||
inkCanvas.Select(new StrokeCollection());
|
||
}
|
||
}
|
||
}
|
||
|
||
private void GridInkCanvasSelectionCover_PreviewTouchUp(object sender, TouchEventArgs e)
|
||
{
|
||
dec.Remove(e.TouchDevice.Id);
|
||
if (dec.Count >= 1) return;
|
||
|
||
// 重置触摸状态
|
||
lastTouchPointOnGridInkCanvasCover = new Point(0, 0);
|
||
isProgramChangeStrokeSelection = false;
|
||
|
||
// 检查是否有点击（没有移动）
|
||
var currentTouchPoint = e.GetTouchPoint(null).Position;
|
||
if (Math.Abs(currentTouchPoint.X - centerPoint.X) < 5 && Math.Abs(currentTouchPoint.Y - centerPoint.Y) < 5)
|
||
{
|
||
// 点击在选择框内，保持选择状态
|
||
if (inkCanvas.GetSelectedStrokes().Count > 0)
|
||
{
|
||
var selectionBounds = inkCanvas.GetSelectionBounds();
|
||
if (currentTouchPoint.X >= selectionBounds.Left &&
|
||
currentTouchPoint.X <= selectionBounds.Right &&
|
||
currentTouchPoint.Y >= selectionBounds.Top &&
|
||
currentTouchPoint.Y <= selectionBounds.Bottom)
|
||
{
|
||
// 点击在选择框内，保持选择
|
||
GridInkCanvasSelectionCover.Visibility = Visibility.Visible;
|
||
StrokesSelectionClone = new StrokeCollection();
|
||
return;
|
||
}
|
||
}
|
||
|
||
// 点击在选择框外，取消选择
|
||
inkCanvas.Select(new StrokeCollection());
|
||
StrokesSelectionClone = new StrokeCollection();
|
||
}
|
||
else if (inkCanvas.GetSelectedStrokes().Count == 0)
|
||
{
|
||
GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
|
||
StrokesSelectionClone = new StrokeCollection();
|
||
}
|
||
else
|
||
{
|
||
GridInkCanvasSelectionCover.Visibility = Visibility.Visible;
|
||
StrokesSelectionClone = new StrokeCollection();
|
||
}
|
||
|
||
}
|
||
|
||
private void LassoSelect_Click(object sender, RoutedEventArgs e)
|
||
{
|
||
ExitMultiTouchModeIfNeeded();
|
||
forceEraser = false;
|
||
forcePointEraser = false;
|
||
drawingShapeMode = 0;
|
||
// 使用集中化的工具模式切换方法
|
||
SetCurrentToolMode(InkCanvasEditingMode.Select);
|
||
SetCursorBasedOnEditingMode(inkCanvas);
|
||
}
|
||
|
||
private void BtnLassoSelect_Click(object sender, RoutedEventArgs e)
|
||
{
|
||
ExitMultiTouchModeIfNeeded();
|
||
forceEraser = false;
|
||
forcePointEraser = false;
|
||
drawingShapeMode = 0;
|
||
// 使用集中化的工具模式切换方法
|
||
SetCurrentToolMode(InkCanvasEditingMode.Select);
|
||
inkCanvas.IsManipulationEnabled = true;
|
||
SetCursorBasedOnEditingMode(inkCanvas);
|
||
}
|
||
|
||
#region UIElement Selection and Resize
|
||
|
||
private Rect GetUIElementBounds(UIElement element)
|
||
{
|
||
if (element is FrameworkElement fe)
|
||
{
|
||
var left = InkCanvas.GetLeft(element);
|
||
var top = InkCanvas.GetTop(element);
|
||
|
||
if (double.IsNaN(left)) left = 0;
|
||
if (double.IsNaN(top)) top = 0;
|
||
|
||
var width = fe.ActualWidth > 0 ? fe.ActualWidth : fe.Width;
|
||
var height = fe.ActualHeight > 0 ? fe.ActualHeight : fe.Height;
|
||
|
||
// 检查是否有RenderTransform
|
||
if (fe.RenderTransform != null && fe.RenderTransform != Transform.Identity)
|
||
{
|
||
try
|
||
{
|
||
// 如果有变换，使用变换后的边界
|
||
var transform = element.TransformToAncestor(inkCanvas);
|
||
var elementBounds = new Rect(0, 0, width, height);
|
||
var transformedBounds = transform.TransformBounds(elementBounds);
|
||
return transformedBounds;
|
||
}
|
||
catch
|
||
{
|
||
// 变换失败时回退到简单计算
|
||
return new Rect(left, top, width, height);
|
||
}
|
||
}
|
||
|
||
// 没有变换时直接使用位置和大小
|
||
return new Rect(left, top, width, height);
|
||
}
|
||
|
||
return new Rect(0, 0, 0, 0);
|
||
}
|
||
|
||
#endregion
|
||
|
||
#region Selection Display and Resize Handles
|
||
|
||
private void UpdateSelectionDisplay()
|
||
{
|
||
if (inkCanvas.GetSelectedStrokes().Count == 0)
|
||
{
|
||
HideSelectionDisplay();
|
||
return;
|
||
}
|
||
|
||
var selectionBounds = inkCanvas.GetSelectionBounds();
|
||
|
||
// 更新选择框
|
||
SelectionRectangle.Visibility = Visibility.Visible;
|
||
SelectionRectangle.Margin = new Thickness(selectionBounds.Left, selectionBounds.Top, 0, 0);
|
||
SelectionRectangle.Width = selectionBounds.Width;
|
||
SelectionRectangle.Height = selectionBounds.Height;
|
||
|
||
// 更新选择点位置
|
||
UpdateSelectionHandles(selectionBounds);
|
||
SelectionHandlesCanvas.Visibility = Visibility.Visible;
|
||
}
|
||
|
||
private void HideSelectionDisplay()
|
||
{
|
||
SelectionRectangle.Visibility = Visibility.Collapsed;
|
||
SelectionHandlesCanvas.Visibility = Visibility.Collapsed;
|
||
}
|
||
|
||
private void UpdateSelectionHandles(Rect bounds)
|
||
{
|
||
// 四个角选择点
|
||
TopLeftHandle.Margin = new Thickness(bounds.Left - 4, bounds.Top - 4, 0, 0);
|
||
TopRightHandle.Margin = new Thickness(bounds.Right - 4, bounds.Top - 4, 0, 0);
|
||
BottomLeftHandle.Margin = new Thickness(bounds.Left - 4, bounds.Bottom - 4, 0, 0);
|
||
BottomRightHandle.Margin = new Thickness(bounds.Right - 4, bounds.Bottom - 4, 0, 0);
|
||
|
||
// 四个边选择点
|
||
TopHandle.Margin = new Thickness(bounds.Left + bounds.Width / 2 - 4, bounds.Top - 4, 0, 0);
|
||
BottomHandle.Margin = new Thickness(bounds.Left + bounds.Width / 2 - 4, bounds.Bottom - 4, 0, 0);
|
||
LeftHandle.Margin = new Thickness(bounds.Left - 4, bounds.Top + bounds.Height / 2 - 4, 0, 0);
|
||
RightHandle.Margin = new Thickness(bounds.Right - 4, bounds.Top + bounds.Height / 2 - 4, 0, 0);
|
||
}
|
||
|
||
private void SelectionHandle_MouseDown(object sender, MouseButtonEventArgs e)
|
||
{
|
||
if (sender is Rectangle handle)
|
||
{
|
||
isResizing = true;
|
||
currentResizeHandle = handle.Name;
|
||
resizeStartPoint = e.GetPosition(inkCanvas);
|
||
originalSelectionBounds = inkCanvas.GetSelectionBounds();
|
||
handle.CaptureMouse();
|
||
e.Handled = true;
|
||
}
|
||
}
|
||
|
||
private void SelectionHandle_MouseMove(object sender, MouseEventArgs e)
|
||
{
|
||
if (!isResizing || !(sender is Rectangle handle)) return;
|
||
|
||
var currentPoint = e.GetPosition(inkCanvas);
|
||
var delta = new Point(currentPoint.X - resizeStartPoint.X, currentPoint.Y - resizeStartPoint.Y);
|
||
|
||
var newBounds = CalculateNewBounds(originalSelectionBounds, delta, currentResizeHandle);
|
||
|
||
// 应用新的边界到选中的墨迹
|
||
ApplyBoundsToStrokes(newBounds);
|
||
|
||
// 更新选择框显示
|
||
UpdateSelectionDisplay();
|
||
}
|
||
|
||
private void SelectionHandle_MouseUp(object sender, MouseButtonEventArgs e)
|
||
{
|
||
if (sender is Rectangle handle)
|
||
{
|
||
isResizing = false;
|
||
currentResizeHandle = "";
|
||
handle.ReleaseMouseCapture();
|
||
e.Handled = true;
|
||
}
|
||
}
|
||
|
||
private Rect CalculateNewBounds(Rect originalBounds, Point delta, string handleName)
|
||
{
|
||
var newBounds = originalBounds;
|
||
|
||
switch (handleName)
|
||
{
|
||
case "TopLeftHandle":
|
||
newBounds.X = originalBounds.X + delta.X;
|
||
newBounds.Y = originalBounds.Y + delta.Y;
|
||
newBounds.Width = originalBounds.Width - delta.X;
|
||
newBounds.Height = originalBounds.Height - delta.Y;
|
||
break;
|
||
case "TopRightHandle":
|
||
newBounds.Y = originalBounds.Y + delta.Y;
|
||
newBounds.Width = originalBounds.Width + delta.X;
|
||
newBounds.Height = originalBounds.Height - delta.Y;
|
||
break;
|
||
case "BottomLeftHandle":
|
||
newBounds.X = originalBounds.X + delta.X;
|
||
newBounds.Width = originalBounds.Width - delta.X;
|
||
newBounds.Height = originalBounds.Height + delta.Y;
|
||
break;
|
||
case "BottomRightHandle":
|
||
newBounds.Width = originalBounds.Width + delta.X;
|
||
newBounds.Height = originalBounds.Height + delta.Y;
|
||
break;
|
||
case "TopHandle":
|
||
newBounds.Y = originalBounds.Y + delta.Y;
|
||
newBounds.Height = originalBounds.Height - delta.Y;
|
||
break;
|
||
case "BottomHandle":
|
||
newBounds.Height = originalBounds.Height + delta.Y;
|
||
break;
|
||
case "LeftHandle":
|
||
newBounds.X = originalBounds.X + delta.X;
|
||
newBounds.Width = originalBounds.Width - delta.X;
|
||
break;
|
||
case "RightHandle":
|
||
newBounds.Width = originalBounds.Width + delta.X;
|
||
break;
|
||
}
|
||
|
||
// 确保最小尺寸
|
||
if (newBounds.Width < 10) newBounds.Width = 10;
|
||
if (newBounds.Height < 10) newBounds.Height = 10;
|
||
|
||
return newBounds;
|
||
}
|
||
|
||
private void ApplyBoundsToStrokes(Rect newBounds)
|
||
{
|
||
var selectedStrokes = inkCanvas.GetSelectedStrokes();
|
||
if (selectedStrokes.Count == 0) return;
|
||
|
||
var originalBounds = inkCanvas.GetSelectionBounds();
|
||
|
||
// 计算缩放比例
|
||
var scaleX = newBounds.Width / originalBounds.Width;
|
||
var scaleY = newBounds.Height / originalBounds.Height;
|
||
|
||
// 计算平移量
|
||
var translateX = newBounds.X - originalBounds.X;
|
||
var translateY = newBounds.Y - originalBounds.Y;
|
||
|
||
// 创建变换矩阵
|
||
var matrix = new Matrix();
|
||
matrix.Translate(translateX, translateY);
|
||
matrix.ScaleAt(scaleX, scaleY, originalBounds.X + originalBounds.Width / 2, originalBounds.Y + originalBounds.Height / 2);
|
||
|
||
// 应用变换到选中的墨迹
|
||
foreach (var stroke in selectedStrokes)
|
||
{
|
||
stroke.Transform(matrix, false);
|
||
}
|
||
}
|
||
|
||
#endregion
|
||
}
|
||
}
|
||
|