77 lines
3.0 KiB
C#
77 lines
3.0 KiB
C#
using Ink_Canvas.Helpers;
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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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namespace Ink_Canvas {
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public partial class MainWindow : Window {
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private enum CommitReason {
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UserInput,
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CodeInput,
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ShapeDrawing,
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ShapeRecognition,
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ClearingCanvas,
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Rotate
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}
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private CommitReason _currentCommitType = CommitReason.UserInput;
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private bool IsEraseByPoint => inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint;
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private StrokeCollection ReplacedStroke;
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private StrokeCollection AddedStroke;
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private StrokeCollection CuboidStrokeCollection;
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private TimeMachine timeMachine = new TimeMachine();
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private void TimeMachine_OnUndoStateChanged(bool status) {
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var result = status ? Visibility.Visible : Visibility.Collapsed;
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BtnUndo.Visibility = result;
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BtnUndo.IsEnabled = status;
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}
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private void TimeMachine_OnRedoStateChanged(bool status) {
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var result = status ? Visibility.Visible : Visibility.Collapsed;
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BtnRedo.Visibility = result;
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BtnRedo.IsEnabled = status;
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}
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private void StrokesOnStrokesChanged(object sender, StrokeCollectionChangedEventArgs e) {
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if (!isHidingSubPanelsWhenInking) {
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isHidingSubPanelsWhenInking = true;
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HideSubPanels(); // 书写时自动隐藏二级菜单
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}
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if (_currentCommitType == CommitReason.CodeInput || _currentCommitType == CommitReason.ShapeDrawing) return;
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if (_currentCommitType == CommitReason.Rotate) {
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timeMachine.CommitStrokeRotateHistory(e.Removed, e.Added);
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return;
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}
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if ((e.Added.Count != 0 || e.Removed.Count != 0) && IsEraseByPoint) {
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if (AddedStroke == null) AddedStroke = new StrokeCollection();
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if (ReplacedStroke == null) ReplacedStroke = new StrokeCollection();
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AddedStroke.Add(e.Added);
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ReplacedStroke.Add(e.Removed);
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return;
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}
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if (e.Added.Count != 0) {
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if (_currentCommitType == CommitReason.ShapeRecognition) {
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timeMachine.CommitStrokeShapeHistory(ReplacedStroke, e.Added);
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ReplacedStroke = null;
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return;
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} else {
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timeMachine.CommitStrokeUserInputHistory(e.Added);
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return;
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}
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}
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if (e.Removed.Count != 0) {
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if (_currentCommitType == CommitReason.ShapeRecognition) {
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ReplacedStroke = e.Removed;
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return;
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} else if (!IsEraseByPoint || _currentCommitType == CommitReason.ClearingCanvas) {
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timeMachine.CommitStrokeEraseHistory(e.Removed);
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return;
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}
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}
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}
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}
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}
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