private void OnTouchDrawing()
{
var inkPresenter = InkCanvas.GetInkCanvasView().InkPresenter;
bool isTouch = false;
if (inkPresenter.InputDeviceTypes.HasFlag(XCoreInputDeviceTypes.Touch))
{
inkPresenter.InputDeviceTypes = XCoreInputDeviceTypes.Pen;
TouchDrawingButton.BackgroundColor = Color.Transparent;
}
else
{
inkPresenter.InputDeviceTypes = XCoreInputDeviceTypes.Pen | XCoreInputDeviceTypes.Touch | XCoreInputDeviceTypes.Mouse;
TouchDrawingButton.BackgroundColor = Color.LightGray;
isTouch = true;
}
var properties = new Dictionary <string, string> {
["Enabled"] = isTouch.ToString(CultureInfo.InvariantCulture)
};
Analytics.TrackEvent("Touch drawing", properties);
}
private void OnShowPalette(object sender, EventArgs e)
{
FullPaletteView.IsVisible = true;
var attributes = InkCanvas.GetInkCanvasView().InkPresenter.CopyDefaultDrawingAttributes();
FullPaletteView.PenSize = attributes.Size;
FullPaletteView.PenColor = attributes.Color;
}
private void OnPaletteChanged(object sender, PaletteChangedEventArgs e)
{
var attributes = InkCanvas.GetInkCanvasView().InkPresenter.CopyDefaultDrawingAttributes();
attributes.Size = e.PenWidth;
attributes.Color = e.PenColor;
InkCanvas.GetInkCanvasView().InkPresenter.UpdateDefaultDrawingAttributes(attributes);
}
/// <summary>
/// detach the events when disappering
/// </summary>
protected override void OnDisappearing()
{
base.OnDisappearing();
var inkCanvasView = InkCanvas.GetInkCanvasView();
inkCanvasView.InkPresenter.StrokesCollected -= OnStrokesCollected;
inkCanvasView.InkPresenter.StrokesErased -= InkStrokeContainer_StrokesErased;
DualScreenInfo.Current.PropertyChanged -= FormsWindow_PropertyChanged;
_dualScreenInfo.PropertyChanged -= OnDualScreenInfoPropertyChanged;
}
private async void UndoManagerUpdated(object sender, EventArgs e)
{
InkCanvas.GetInkCanvasView().InkPresenter.StrokeContainer.SetRange(App.GetSketchData().InkStrokes);
InkCanvas.GetInkCanvasView().InvalidateCanvas(false, true);
await SaveSketchAsync().ConfigureAwait(false);
await UpdateWebViewAsync().ConfigureAwait(false);
}
private async void InkStrokeContainer_StrokesErased(object sender, Xamarin.Forms.Inking.XInkStrokesErasedEventArgs e)
{
var undoItem = App.Container.Resolve <IAddStrokesUndoItem>();
undoItem.Container = App.GetSketchData();
undoItem.Strokes = e.Strokes.ToList();
undoItem.IsErase = true;
_viewModel.UndoManager.Add(undoItem);
App.GetSketchData().InkStrokes = InkCanvas.GetInkCanvasView().InkPresenter.StrokeContainer.GetStrokes();
await UpdateWebViewAsync().ConfigureAwait(false);
}
public SplitPage(ISplitPageViewModel splitPageViewModel)
{
_viewModel = splitPageViewModel ?? throw new ArgumentNullException(nameof(splitPageViewModel));
_viewModel.ActivateModeCommand = new Command <string>(ActivateMode);
_viewModel.TouchDrawingCommand = new Command(OnTouchDrawing);
_viewModel.UndoManager.Updated += UndoManagerUpdated;
InitializeComponent();
_viewModel.InkCanvasView = InkCanvas.GetInkCanvasView();
MenuView.NewSketchCommand = new Command(OnNewSketch);
MenuView.Page = this;
BindingContext = _viewModel;
_dualScreenInfo = new DualScreenInfo(ControlPanel);
ActivateMode(Mode.Drawing);
}
/// <summary>
/// Update the sketch data
/// </summary>
/// <param name="sketchData">the sketch data</param>
public async void SketchDataUpdated(ISketchData sketchData)
{
_ = sketchData ?? throw new ArgumentNullException(nameof(sketchData));
// Title = sketchData.Name;
var inkCanvasView = InkCanvas.GetInkCanvasView();
Dispatcher.BeginInvokeOnMainThread(delegate
{
inkCanvasView.BackgroundColor = sketchData.BackgroundColor;
InkCanvas.CanvasSize = new Size(sketchData.Width, sketchData.Height);
InkCanvas.GetInkCanvasView().InkPresenter.StrokeContainer.Clear();
InkCanvas.GetInkCanvasView().InkPresenter.StrokeContainer.Add(sketchData.InkStrokes);
inkCanvasView.InvalidateCanvas(false, true);
});
_viewModel.UndoManager.Reset();
await UpdateWebViewAsync().ConfigureAwait(false);
}
private void OnZoomSliderValueChanged(object sender, ValueChangedEventArgs e)
{
InkCanvas.GetInkCanvasView().ZoomFactor = e.NewValue;
}
/// <summary>
/// Attach events and initialize the sketch data when appearing
/// </summary>
protected override async void OnAppearing()
{
Analytics.TrackEvent("Split page");
base.OnAppearing();
MenuContainerPane1.InputTransparent = true;
MenuViewRootLayout.InputTransparent = true;
if (Xamarin.Essentials.Preferences.Get(SettingsPage.LandscapeDrawingRight, false))
{
WideModePreference = TwoPaneViewWideModeConfiguration.RightLeft;
}
else
{
WideModePreference = TwoPaneViewWideModeConfiguration.LeftRight;
}
if (Xamarin.Essentials.Preferences.Get(SettingsPage.PortraitDrawingBottom, false))
{
TallModePreference = TwoPaneViewTallModeConfiguration.BottomTop;
}
else
{
TallModePreference = TwoPaneViewTallModeConfiguration.TopBottom;
}
UpdateSize();
DualScreenInfo.Current.PropertyChanged += FormsWindow_PropertyChanged;
_dualScreenInfo.PropertyChanged += OnDualScreenInfoPropertyChanged;
var sketchData = App.GetSketchData();
if (sketchData != null)
{
Title = sketchData.Name;
}
var inkCanvasView = InkCanvas.GetInkCanvasView();
if (sketchData != null)
{
inkCanvasView.BackgroundColor = sketchData.BackgroundColor;
inkCanvasView.InkPresenter.StrokeContainer.Clear();
inkCanvasView.InkPresenter.StrokeContainer.Add(sketchData.InkStrokes);
}
inkCanvasView.InkPresenter.StrokesCollected += OnStrokesCollected;
inkCanvasView.InkPresenter.StrokesErased += InkStrokeContainer_StrokesErased;
UpdateTwoPaneView();
await UpdateWebViewAsync().ConfigureAwait(false);
if (InkCanvas.GetInkCanvasView().InkPresenter.InputDeviceTypes.HasFlag(XCoreInputDeviceTypes.Touch))
{
TouchDrawingButton.BackgroundColor = Color.LightGray;
}
else
{
TouchDrawingButton.BackgroundColor = Color.Transparent;
}
}
