415 lines
19 KiB
C#
415 lines
19 KiB
C#
using Ink_Canvas.Helpers;
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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.Threading.Tasks;
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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 Point = System.Windows.Point;
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namespace Ink_Canvas {
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public partial class MainWindow : Window {
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#region Multi-Touch
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private bool isInMultiTouchMode = false;
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private void BorderMultiTouchMode_MouseUp(object sender, MouseButtonEventArgs e) {
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if (isInMultiTouchMode) {
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inkCanvas.StylusDown -= MainWindow_StylusDown;
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inkCanvas.StylusMove -= MainWindow_StylusMove;
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inkCanvas.StylusUp -= MainWindow_StylusUp;
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inkCanvas.TouchDown -= MainWindow_TouchDown;
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inkCanvas.TouchDown += Main_Grid_TouchDown;
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inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
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inkCanvas.Children.Clear();
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isInMultiTouchMode = false;
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}
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else {
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inkCanvas.StylusDown += MainWindow_StylusDown;
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inkCanvas.StylusMove += MainWindow_StylusMove;
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inkCanvas.StylusUp += MainWindow_StylusUp;
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inkCanvas.TouchDown += MainWindow_TouchDown;
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inkCanvas.TouchDown -= Main_Grid_TouchDown;
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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inkCanvas.Children.Clear();
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isInMultiTouchMode = true;
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}
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}
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private void MainWindow_TouchDown(object sender, TouchEventArgs e) {
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint
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|| inkCanvas.EditingMode == InkCanvasEditingMode.EraseByStroke
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|| inkCanvas.EditingMode == InkCanvasEditingMode.Select) return;
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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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double boundWidth = e.GetTouchPoint(null).Bounds.Width, eraserMultiplier = 1.0;
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if (!Settings.Advanced.EraserBindTouchMultiplier && Settings.Advanced.IsSpecialScreen)
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eraserMultiplier = 1 / Settings.Advanced.TouchMultiplier;
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if ((Settings.Advanced.TouchMultiplier != 0 || !Settings.Advanced.IsSpecialScreen) //启用特殊屏幕且触摸倍数为 0 时禁用橡皮
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&& boundWidth > BoundsWidth * 2.5) {
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if (drawingShapeMode == 0 && forceEraser) return;
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double k = 1;
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switch (Settings.Canvas.EraserSize) {
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case 0:
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k = 0.5;
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break;
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case 1:
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k = 0.8;
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break;
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case 3:
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k = 1.25;
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break;
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case 4:
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k = 1.8;
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break;
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}
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inkCanvas.EraserShape = new EllipseStylusShape(boundWidth * k * eraserMultiplier * 0.25,
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boundWidth * k * eraserMultiplier * 0.25);
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TouchDownPointsList[e.TouchDevice.Id] = InkCanvasEditingMode.EraseByPoint;
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inkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint;
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}
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else {
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TouchDownPointsList[e.TouchDevice.Id] = InkCanvasEditingMode.None;
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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}
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}
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private void MainWindow_StylusDown(object sender, StylusDownEventArgs e) {
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if (inkCanvas.EditingMode == InkCanvasEditingMode.EraseByPoint
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|| inkCanvas.EditingMode == InkCanvasEditingMode.EraseByStroke
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|| inkCanvas.EditingMode == InkCanvasEditingMode.Select) return;
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TouchDownPointsList[e.StylusDevice.Id] = InkCanvasEditingMode.None;
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}
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private async void MainWindow_StylusUp(object sender, StylusEventArgs e) {
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try {
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inkCanvas.Strokes.Add(GetStrokeVisual(e.StylusDevice.Id).Stroke);
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await Task.Delay(5); // 避免渲染墨迹完成前预览墨迹被删除导致墨迹闪烁
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inkCanvas.Children.Remove(GetVisualCanvas(e.StylusDevice.Id));
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inkCanvas_StrokeCollected(inkCanvas,
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new InkCanvasStrokeCollectedEventArgs(GetStrokeVisual(e.StylusDevice.Id).Stroke));
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}
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catch (Exception ex) {
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Label.Content = ex.ToString();
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}
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try {
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StrokeVisualList.Remove(e.StylusDevice.Id);
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VisualCanvasList.Remove(e.StylusDevice.Id);
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TouchDownPointsList.Remove(e.StylusDevice.Id);
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if (StrokeVisualList.Count == 0 || VisualCanvasList.Count == 0 || TouchDownPointsList.Count == 0) {
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inkCanvas.Children.Clear();
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StrokeVisualList.Clear();
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VisualCanvasList.Clear();
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TouchDownPointsList.Clear();
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}
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}
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catch { }
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}
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private void MainWindow_StylusMove(object sender, StylusEventArgs e) {
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try {
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if (GetTouchDownPointsList(e.StylusDevice.Id) != InkCanvasEditingMode.None) return;
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try {
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if (e.StylusDevice.StylusButtons[1].StylusButtonState == StylusButtonState.Down) return;
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}
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catch { }
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var strokeVisual = GetStrokeVisual(e.StylusDevice.Id);
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var stylusPointCollection = e.GetStylusPoints(this);
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foreach (var stylusPoint in stylusPointCollection)
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strokeVisual.Add(new StylusPoint(stylusPoint.X, stylusPoint.Y, stylusPoint.PressureFactor));
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strokeVisual.Redraw();
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}
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catch { }
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}
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private StrokeVisual GetStrokeVisual(int id) {
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if (StrokeVisualList.TryGetValue(id, out var visual)) return visual;
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var strokeVisual = new StrokeVisual(inkCanvas.DefaultDrawingAttributes.Clone());
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StrokeVisualList[id] = strokeVisual;
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StrokeVisualList[id] = strokeVisual;
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var visualCanvas = new VisualCanvas(strokeVisual);
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VisualCanvasList[id] = visualCanvas;
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inkCanvas.Children.Add(visualCanvas);
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return strokeVisual;
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}
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private VisualCanvas GetVisualCanvas(int id) {
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return VisualCanvasList.TryGetValue(id, out var visualCanvas) ? visualCanvas : null;
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}
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private InkCanvasEditingMode GetTouchDownPointsList(int id) {
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return TouchDownPointsList.TryGetValue(id, out var inkCanvasEditingMode) ? inkCanvasEditingMode : inkCanvas.EditingMode;
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}
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private Dictionary<int, InkCanvasEditingMode> TouchDownPointsList { get; } =
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new Dictionary<int, InkCanvasEditingMode>();
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private Dictionary<int, StrokeVisual> StrokeVisualList { get; } = new Dictionary<int, StrokeVisual>();
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private Dictionary<int, VisualCanvas> VisualCanvasList { get; } = new Dictionary<int, VisualCanvas>();
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#endregion
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private int lastTouchDownTime = 0, lastTouchUpTime = 0;
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private Point iniP = new Point(0, 0);
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private bool isLastTouchEraser = false;
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private bool forcePointEraser = true;
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private void Main_Grid_TouchDown(object sender, TouchEventArgs e) {
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inkCanvas.CaptureTouch(e.TouchDevice);
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ViewboxFloatingBar.IsHitTestVisible = false;
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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 (NeedUpdateIniP()) iniP = e.GetTouchPoint(inkCanvas).Position;
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if (drawingShapeMode == 9 && isFirstTouchCuboid == false) MouseTouchMove(iniP);
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inkCanvas.Opacity = 1;
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double boundsWidth = GetTouchBoundWidth(e), eraserMultiplier = 1.0;
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if (!Settings.Advanced.EraserBindTouchMultiplier && Settings.Advanced.IsSpecialScreen)
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eraserMultiplier = 1 / Settings.Advanced.TouchMultiplier;
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if (boundsWidth > BoundsWidth) {
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isLastTouchEraser = true;
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if (drawingShapeMode == 0 && forceEraser) return;
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if (boundsWidth > BoundsWidth * 2.5) {
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double k = 1;
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switch (Settings.Canvas.EraserSize) {
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case 0:
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k = 0.5;
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break;
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case 1:
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k = 0.8;
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break;
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case 3:
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k = 1.25;
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break;
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case 4:
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k = 1.8;
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break;
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}
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inkCanvas.EraserShape = new EllipseStylusShape(boundsWidth * k * eraserMultiplier,
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boundsWidth * k * eraserMultiplier);
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inkCanvas.EditingMode = InkCanvasEditingMode.EraseByPoint;
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}
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else {
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if (StackPanelPPTControls.Visibility == Visibility.Visible && inkCanvas.Strokes.Count == 0 &&
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Settings.PowerPointSettings.IsEnableFingerGestureSlideShowControl) {
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isLastTouchEraser = false;
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inkCanvas.EditingMode = InkCanvasEditingMode.GestureOnly;
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inkCanvas.Opacity = 0.1;
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}
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else {
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inkCanvas.EraserShape = new EllipseStylusShape(5, 5);
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inkCanvas.EditingMode = InkCanvasEditingMode.EraseByStroke;
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}
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}
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}
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else {
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isLastTouchEraser = false;
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inkCanvas.EraserShape =
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forcePointEraser ? new EllipseStylusShape(50, 50) : new EllipseStylusShape(5, 5);
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if (forceEraser) return;
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inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
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}
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}
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private double GetTouchBoundWidth(TouchEventArgs e) {
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var args = e.GetTouchPoint(null).Bounds;
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double value;
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if (!Settings.Advanced.IsQuadIR) value = args.Width;
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else value = Math.Sqrt(args.Width * args.Height); //四边红外
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if (Settings.Advanced.IsSpecialScreen) value *= Settings.Advanced.TouchMultiplier;
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return value;
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}
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//记录触摸设备ID
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private List<int> dec = new List<int>();
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//中心点
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private Point centerPoint;
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private InkCanvasEditingMode lastInkCanvasEditingMode = InkCanvasEditingMode.Ink;
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private bool isSingleFingerDragMode = false;
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private void inkCanvas_PreviewTouchDown(object sender, TouchEventArgs e) {
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inkCanvas.CaptureTouch(e.TouchDevice);
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ViewboxFloatingBar.IsHitTestVisible = false;
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dec.Add(e.TouchDevice.Id);
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//设备1个的时候，记录中心点
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if (dec.Count == 1) {
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var touchPoint = e.GetTouchPoint(inkCanvas);
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centerPoint = touchPoint.Position;
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//记录第一根手指点击时的 StrokeCollection
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lastTouchDownStrokeCollection = inkCanvas.Strokes.Clone();
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}
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//设备两个及两个以上，将画笔功能关闭
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if (dec.Count > 1 || isSingleFingerDragMode || !Settings.Gesture.IsEnableTwoFingerGesture) {
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if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture) return;
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if (inkCanvas.EditingMode == InkCanvasEditingMode.None ||
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inkCanvas.EditingMode == InkCanvasEditingMode.Select) return;
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lastInkCanvasEditingMode = inkCanvas.EditingMode;
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inkCanvas.EditingMode = InkCanvasEditingMode.None;
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}
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}
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private void inkCanvas_PreviewTouchUp(object sender, TouchEventArgs e) {
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inkCanvas.ReleaseAllTouchCaptures();
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ViewboxFloatingBar.IsHitTestVisible = true;
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//手势完成后切回之前的状态
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if (dec.Count > 1)
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if (inkCanvas.EditingMode == InkCanvasEditingMode.None)
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inkCanvas.EditingMode = lastInkCanvasEditingMode;
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dec.Remove(e.TouchDevice.Id);
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inkCanvas.Opacity = 1;
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if (dec.Count == 0)
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if (lastTouchDownStrokeCollection.Count() != inkCanvas.Strokes.Count() &&
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!(drawingShapeMode == 9 && !isFirstTouchCuboid)) {
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var whiteboardIndex = CurrentWhiteboardIndex;
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if (currentMode == 0) whiteboardIndex = 0;
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strokeCollections[whiteboardIndex] = lastTouchDownStrokeCollection;
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}
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}
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private void inkCanvas_ManipulationStarting(object sender, ManipulationStartingEventArgs e) {
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e.Mode = ManipulationModes.All;
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}
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private void inkCanvas_ManipulationInertiaStarting(object sender, ManipulationInertiaStartingEventArgs e) { }
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private void Main_Grid_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e) {
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if (e.Manipulators.Count() != 0) return;
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if (forceEraser) return;
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inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
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}
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// -- removed --
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//
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//private void inkCanvas_ManipulationStarted(object sender, ManipulationStartedEventArgs e)
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//{
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// if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture || inkCanvas.Strokes.Count == 0 || dec.Count() < 2) return;
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// _currentCommitType = CommitReason.Manipulation;
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// StrokeCollection strokes = inkCanvas.GetSelectedStrokes();
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// if (strokes.Count != 0)
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// {
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// inkCanvas.Strokes.Replace(strokes, strokes.Clone());
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// }
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// else
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// {
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// var originalStrokes = inkCanvas.Strokes;
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// var targetStrokes = originalStrokes.Clone();
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// originalStrokes.Replace(originalStrokes, targetStrokes);
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// }
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// _currentCommitType = CommitReason.UserInput;
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//}
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private void Main_Grid_ManipulationDelta(object sender, ManipulationDeltaEventArgs e) {
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if (isInMultiTouchMode || !Settings.Gesture.IsEnableTwoFingerGesture) return;
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if ((dec.Count >= 2 && (Settings.PowerPointSettings.IsEnableTwoFingerGestureInPresentationMode ||
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StackPanelPPTControls.Visibility != Visibility.Visible ||
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StackPanelPPTButtons.Visibility == Visibility.Collapsed)) ||
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isSingleFingerDragMode) {
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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 m = new Matrix();
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if (Settings.Gesture.IsEnableTwoFingerTranslate)
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m.Translate(trans.X, trans.Y); // 移动
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if (Settings.Gesture.IsEnableTwoFingerGestureTranslateOrRotation) {
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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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// 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 = m.Transform(center); // 转换为矩阵缩放和旋转的中心点
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if (Settings.Gesture.IsEnableTwoFingerRotation)
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m.RotateAt(rotate, center.X, center.Y); // 旋转
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if (Settings.Gesture.IsEnableTwoFingerZoom)
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m.ScaleAt(scale.X, scale.Y, center.X, center.Y); // 缩放
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}
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var strokes = inkCanvas.GetSelectedStrokes();
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if (strokes.Count != 0) {
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foreach (var stroke in strokes) {
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stroke.Transform(m, false);
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foreach (var circle in circles)
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if (stroke == circle.Stroke) {
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circle.R = GetDistance(circle.Stroke.StylusPoints[0].ToPoint(),
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circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].ToPoint()) / 2;
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circle.Centroid = new Point(
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(circle.Stroke.StylusPoints[0].X +
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circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].X) / 2,
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(circle.Stroke.StylusPoints[0].Y +
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circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].Y) / 2);
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break;
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}
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if (!Settings.Gesture.IsEnableTwoFingerZoom) continue;
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try {
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stroke.DrawingAttributes.Width *= md.Scale.X;
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stroke.DrawingAttributes.Height *= md.Scale.Y;
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}
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catch { }
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}
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}
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else {
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if (Settings.Gesture.IsEnableTwoFingerZoom) {
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foreach (var stroke in inkCanvas.Strokes) {
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stroke.Transform(m, false);
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try {
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stroke.DrawingAttributes.Width *= md.Scale.X;
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stroke.DrawingAttributes.Height *= md.Scale.Y;
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}
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catch { }
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}
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;
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}
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else {
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foreach (var stroke in inkCanvas.Strokes) stroke.Transform(m, false);
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;
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}
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foreach (var circle in circles) {
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circle.R = GetDistance(circle.Stroke.StylusPoints[0].ToPoint(),
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circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].ToPoint()) / 2;
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circle.Centroid = new Point(
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(circle.Stroke.StylusPoints[0].X +
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circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].X) / 2,
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(circle.Stroke.StylusPoints[0].Y +
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circle.Stroke.StylusPoints[circle.Stroke.StylusPoints.Count / 2].Y) / 2
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);
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}
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}
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}
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}
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}
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} |