public ImageOverlayView(UIImage viewToDraw, RectangleF frame) : base(frame){
this.BackgroundColor = UIColor.Clear;
drawableView = viewToDraw;
this.MultipleTouchEnabled = false;
needsPoint = true;
add = new FlatButton(RectangleF.Empty);
add.SetTitle ("Add", UIControlState.Normal);
add.SetBackgroundColor (MobileCore.Values.Colors.WhiteSeventyFivePercent.ToNative (), UIControlState.Normal);
add.SetTitleColor (MobileCore.Values.Colors.DarkGray.ToNative (), UIControlState.Normal);
add.TouchUpInside += AddClicked;
Add (add);
undo = new FlatButton(RectangleF.Empty);
undo.SetTitle ("Undo", UIControlState.Normal);
undo.SetBackgroundColor (MobileCore.Values.Colors.WhiteSeventyFivePercent.ToNative (), UIControlState.Normal);
undo.SetTitleColor (MobileCore.Values.Colors.DarkGray.ToNative (), UIControlState.Normal);
undo.TouchUpInside += UndoClicked;
Add (undo);
this.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints ();
this.AddConstraints (
undo.AtBottomOf(this, Constants.Layout.VerticalPadding),
undo.AtRightOf(this, Constants.Layout.HorizontalPadding),
undo.Width().GreaterThanOrEqualTo(56f),
undo.Height().GreaterThanOrEqualTo(32f),
add.AtBottomOf(this, Constants.Layout.VerticalPadding),
add.ToLeftOf(undo, Constants.Layout.HorizontalPadding),
add.Width().GreaterThanOrEqualTo(56f),
add.Height().GreaterThanOrEqualTo(32f)
);
this.WhenAnyValue (vm => vm.Enabled)
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe (enabled => {
UserInteractionEnabled = enabled;
UIView.AnimateAsync(Constants.Animation.StandardAnimationDuration, () => add.Alpha = undo.Alpha = enabled ? 1.0f : 0.0f);
});
this.WhenAnyValue (vm => vm.Editing)
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe (editing => {
if(Enabled)
UIView.AnimateAsync(Constants.Animation.StandardAnimationDuration, () => add.Alpha = undo.Alpha = editing ? 0.0f : 1.0f );
});
}
public SmoothDrawView(RectangleF frame, UIColor drawingColor, float lineThickness) : base(frame){
paths = new ReactiveList<List<UIBezierPath>> ();
this.BackgroundColor = UIColor.Clear;
strokeColor = drawingColor ?? UIColor.Yellow;
this.lineThickness = lineThickness;
this.MultipleTouchEnabled = false;
undo = new FlatButton(RectangleF.Empty);
undo.Alpha = default(float);
undo.SetTitle ("Undo", UIControlState.Normal);
undo.SetBackgroundColor (MobileCore.Values.Colors.WhiteSeventyFivePercent.ToNative (), UIControlState.Normal);
undo.SetTitleColor (MobileCore.Values.Colors.DarkGray.ToNative (), UIControlState.Normal);
Add (undo);
this.SubviewsDoNotTranslateAutoresizingMaskIntoConstraints ();
this.AddConstraints (
undo.AtBottomOf(this, Constants.Layout.VerticalPadding),
undo.AtRightOf(this, Constants.Layout.HorizontalPadding),
undo.Width().GreaterThanOrEqualTo(56f),
undo.Height().GreaterThanOrEqualTo(32f)
);
Observable.CombineLatest (
this.WhenAnyValue (x => x.Enabled),
paths.CountChanged.StartWith(0),
(enabled, count) => enabled && count > 0)
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe (shouldDisplay => UIView.AnimateAsync(Constants.Animation.StandardAnimationDuration, () => undo.Alpha = shouldDisplay ? 1.0f : default(float) ));
this.WhenAnyValue (vm => vm.Enabled)
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe (enabled => UserInteractionEnabled = enabled);
Observable.FromEventPattern(h => undo.TouchUpInside += h, h => undo.TouchUpInside -= h)
.Where(_ => paths.Any())
.ObserveOn(RxApp.MainThreadScheduler)
.Subscribe(_ => {
paths.RemoveAt (paths.Count - 1);
this.SetNeedsDisplay ();
});
}