InkCanvasForClass/Ink Canvas/MainWindow_cs/MW_SelectionGestures.cs

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using iNKORE.UI.WPF.Modern.Controls;
using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using Point = System.Windows.Point;
namespace Ink_Canvas {
public partial class MainWindow : Window {
#region Floating Control
private object lastBorderMouseDownObject;
private void Border_MouseDown(object sender, MouseButtonEventArgs e) {
lastBorderMouseDownObject = sender;
}
private bool isStrokeSelectionCloneOn = false;
private void BorderStrokeSelectionClone_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
if (isStrokeSelectionCloneOn) {
BorderStrokeSelectionClone.Background = Brushes.Transparent;
isStrokeSelectionCloneOn = false;
}
else {
BorderStrokeSelectionClone.Background = new SolidColorBrush(StringToColor("#FF1ED760"));
isStrokeSelectionCloneOn = true;
}
}
private void BorderStrokeSelectionCloneToNewBoard_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
var strokes = inkCanvas.GetSelectedStrokes();
inkCanvas.Select(new StrokeCollection());
strokes = strokes.Clone();
BtnWhiteBoardAdd_Click(null, null);
inkCanvas.Strokes.Add(strokes);
}
private void BorderStrokeSelectionDelete_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
SymbolIconDelete_MouseUp(sender, e);
}
private void GridPenWidthDecrease_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
ChangeStrokeThickness(0.8);
}
private void GridPenWidthIncrease_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
ChangeStrokeThickness(1.25);
}
private void ChangeStrokeThickness(double multipler) {
foreach (var stroke in inkCanvas.GetSelectedStrokes()) {
var newWidth = stroke.DrawingAttributes.Width * multipler;
var newHeight = stroke.DrawingAttributes.Height * multipler;
if (!(newWidth >= DrawingAttributes.MinWidth) || !(newWidth <= DrawingAttributes.MaxWidth)
|| !(newHeight >= DrawingAttributes.MinHeight) ||
!(newHeight <= DrawingAttributes.MaxHeight)) continue;
stroke.DrawingAttributes.Width = newWidth;
stroke.DrawingAttributes.Height = newHeight;
}
if (DrawingAttributesHistory.Count > 0)
{
timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
foreach (var item in DrawingAttributesHistoryFlag)
{
item.Value.Clear();
}
}
}
private void GridPenWidthRestore_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
foreach (var stroke in inkCanvas.GetSelectedStrokes()) {
stroke.DrawingAttributes.Width = inkCanvas.DefaultDrawingAttributes.Width;
stroke.DrawingAttributes.Height = inkCanvas.DefaultDrawingAttributes.Height;
}
}
private void ImageFlipHorizontal_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
var m = new Matrix();
// 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.ScaleAt(-1, 1, center.X, center.Y); // 缩放
var targetStrokes = inkCanvas.GetSelectedStrokes();
foreach (var stroke in targetStrokes) stroke.Transform(m, false);
if (DrawingAttributesHistory.Count > 0)
{
//var collecion = new StrokeCollection();
//foreach (var item in DrawingAttributesHistory)
//{
// collecion.Add(item.Key);
//}
timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
foreach (var item in DrawingAttributesHistoryFlag)
{
item.Value.Clear();
}
}
//updateBorderStrokeSelectionControlLocation();
}
private void ImageFlipVertical_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
var m = new Matrix();
// 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.ScaleAt(1, -1, center.X, center.Y); // 缩放
var targetStrokes = inkCanvas.GetSelectedStrokes();
foreach (var stroke in targetStrokes) stroke.Transform(m, false);
if (DrawingAttributesHistory.Count > 0)
{
timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
foreach (var item in DrawingAttributesHistoryFlag)
{
item.Value.Clear();
}
}
}
private void ImageRotate45_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
var m = new Matrix();
// 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.RotateAt(45, center.X, center.Y); // 旋转
var targetStrokes = inkCanvas.GetSelectedStrokes();
foreach (var stroke in targetStrokes) stroke.Transform(m, false);
if (DrawingAttributesHistory.Count > 0)
{
timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
foreach (var item in DrawingAttributesHistoryFlag)
{
item.Value.Clear();
}
}
}
private void ImageRotate90_MouseUp(object sender, MouseButtonEventArgs e) {
if (lastBorderMouseDownObject != sender) return;
var m = new Matrix();
// 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.RotateAt(90, center.X, center.Y); // 旋转
var targetStrokes = inkCanvas.GetSelectedStrokes();
foreach (var stroke in targetStrokes) stroke.Transform(m, false);
if (DrawingAttributesHistory.Count > 0)
{
var collecion = new StrokeCollection();
foreach (var item in DrawingAttributesHistory)
{
collecion.Add(item.Key);
}
timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
foreach (var item in DrawingAttributesHistoryFlag)
{
item.Value.Clear();
}
}
}
#endregion
private bool isGridInkCanvasSelectionCoverMouseDown = false;
private StrokeCollection StrokesSelectionClone = new StrokeCollection();
private void GridInkCanvasSelectionCover_MouseDown(object sender, MouseButtonEventArgs e) {
isGridInkCanvasSelectionCoverMouseDown = true;
}
private void GridInkCanvasSelectionCover_MouseUp(object sender, MouseButtonEventArgs e) {
if (!isGridInkCanvasSelectionCoverMouseDown) return;
isGridInkCanvasSelectionCoverMouseDown = false;
GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
}
private void BtnSelect_Click(object sender, RoutedEventArgs e) {
forceEraser = true;
drawingShapeMode = 0;
inkCanvas.IsManipulationEnabled = false;
if (inkCanvas.EditingMode == InkCanvasEditingMode.Select) {
if (inkCanvas.GetSelectedStrokes().Count == inkCanvas.Strokes.Count) {
inkCanvas.EditingMode = InkCanvasEditingMode.Ink;
inkCanvas.EditingMode = InkCanvasEditingMode.Select;
}
else {
var selectedStrokes = new StrokeCollection();
foreach (var stroke in inkCanvas.Strokes)
if (stroke.GetBounds().Width > 0 && stroke.GetBounds().Height > 0)
selectedStrokes.Add(stroke);
inkCanvas.Select(selectedStrokes);
}
}
else {
inkCanvas.EditingMode = InkCanvasEditingMode.Select;
}
}
private double BorderStrokeSelectionControlWidth = 490.0;
private double BorderStrokeSelectionControlHeight = 80.0;
private bool isProgramChangeStrokeSelection = false;
private void inkCanvas_SelectionChanged(object sender, EventArgs e) {
if (isProgramChangeStrokeSelection) return;
if (inkCanvas.GetSelectedStrokes().Count == 0) {
GridInkCanvasSelectionCover.Visibility = Visibility.Collapsed;
}
else {
GridInkCanvasSelectionCover.Visibility = Visibility.Visible;
BorderStrokeSelectionClone.Background = Brushes.Transparent;
isStrokeSelectionCloneOn = false;
updateBorderStrokeSelectionControlLocation();
}
}
private void updateBorderStrokeSelectionControlLocation() {
var borderLeft = (inkCanvas.GetSelectionBounds().Left + inkCanvas.GetSelectionBounds().Right -
BorderStrokeSelectionControlWidth) / 2;
var borderTop = inkCanvas.GetSelectionBounds().Bottom + 1;
if (borderLeft < 0) borderLeft = 0;
if (borderTop < 0) borderTop = 0;
if (Width - borderLeft < BorderStrokeSelectionControlWidth || double.IsNaN(borderLeft))
borderLeft = Width - BorderStrokeSelectionControlWidth;
if (Height - borderTop < BorderStrokeSelectionControlHeight || double.IsNaN(borderTop))
borderTop = Height - BorderStrokeSelectionControlHeight;
if (borderTop > 60) borderTop -= 60;
BorderStrokeSelectionControl.Margin = new Thickness(borderLeft, borderTop, 0, 0);
}
private void GridInkCanvasSelectionCover_ManipulationStarting(object sender, ManipulationStartingEventArgs e) {
e.Mode = ManipulationModes.All;
}
private void GridInkCanvasSelectionCover_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e) {
if (StrokeManipulationHistory?.Count > 0)
{
timeMachine.CommitStrokeManipulationHistory(StrokeManipulationHistory);
foreach (var item in StrokeManipulationHistory)
{
StrokeInitialHistory[item.Key] = item.Value.Item2;
}
StrokeManipulationHistory = null;
}
if (DrawingAttributesHistory.Count > 0)
{
timeMachine.CommitStrokeDrawingAttributesHistory(DrawingAttributesHistory);
DrawingAttributesHistory = new Dictionary<Stroke, Tuple<DrawingAttributes, DrawingAttributes>>();
foreach (var item in DrawingAttributesHistoryFlag)
{
item.Value.Clear();
}
}
}
private void GridInkCanvasSelectionCover_ManipulationDelta(object sender, ManipulationDeltaEventArgs e) {
try {
if (dec.Count >= 1) {
var md = e.DeltaManipulation;
var trans = md.Translation; // 获得位移矢量
var rotate = md.Rotation; // 获得旋转角度
var scale = md.Scale; // 获得缩放倍数
var m = new Matrix();
// 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
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
foreach (var stroke in strokes) {
stroke.Transform(m, false);
try {
stroke.DrawingAttributes.Width *= md.Scale.X;
stroke.DrawingAttributes.Height *= md.Scale.Y;
}
catch { }
}
updateBorderStrokeSelectionControlLocation();
}
}
catch { }
}
private void GridInkCanvasSelectionCover_TouchDown(object sender, TouchEventArgs e) { }
private void GridInkCanvasSelectionCover_TouchUp(object sender, TouchEventArgs e) { }
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 = touchPoint.Position;
if (isStrokeSelectionCloneOn) {
var strokes = inkCanvas.GetSelectedStrokes();
isProgramChangeStrokeSelection = true;
inkCanvas.Select(new StrokeCollection());
StrokesSelectionClone = strokes.Clone();
inkCanvas.Select(strokes);
isProgramChangeStrokeSelection = false;
inkCanvas.Strokes.Add(StrokesSelectionClone);
}
}
}
private void GridInkCanvasSelectionCover_PreviewTouchUp(object sender, TouchEventArgs e) {
dec.Remove(e.TouchDevice.Id);
if (dec.Count >= 1) return;
isProgramChangeStrokeSelection = false;
if (lastTouchPointOnGridInkCanvasCover == e.GetTouchPoint(null).Position) {
if (!(lastTouchPointOnGridInkCanvasCover.X < inkCanvas.GetSelectionBounds().Left) &&
!(lastTouchPointOnGridInkCanvasCover.Y < inkCanvas.GetSelectionBounds().Top) &&
!(lastTouchPointOnGridInkCanvasCover.X > inkCanvas.GetSelectionBounds().Right) &&
!(lastTouchPointOnGridInkCanvasCover.Y > inkCanvas.GetSelectionBounds().Bottom)) return;
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();
}
}
}
}