//Switch between Rectangle Snapping and Painting
private void SwitchMode()
{
Grid.IsEnabled = !Grid.IsEnabled;
PaintSurface.IsEnabled = !PaintSurface.IsEnabled;
_currentPath = null;
//"Hide" Selection Rectangle
SelectionRectangle.Margin = new Thickness(99999);
//Stop animations by setting AnimationTimeline to null
SelectedMode.BeginAnimation(OpacityProperty, null);
//Set correct Selected Mode Indicator
if (Grid.IsEnabled)
{
//Prevent Painting in Capture Rectangle mode
Grid.CaptureMouse();
Cursor = Cursors.Cross;
CropIcon.Background = Brushes.Gray;
DrawIcon.Background = Brushes.Transparent;
}
else
{
//Prevent Capturing Rectangle in Paint Mode
PaintSurface.CaptureMouse();
Cursor = Cursors.Pen;
DrawIcon.Background = Brushes.Gray;
CropIcon.Background = Brushes.Transparent;
}
//Fade Selected Mode View in
FadeSelectedModeIn();
}
//Fade the Selected Mode (Drawing/Rectangle) in
private void FadeSelectedModeIn()
{
DoubleAnimation anim = new DoubleAnimation(0, TimeSpan.FromSeconds(0.25));
anim.Completed += FadeSelectedModeOut;
anim.From = SelectedMode.Opacity;
anim.To = 0.9;
SelectedMode.BeginAnimation(OpacityProperty, anim);
}
//Fade the Selected Mode (Drawing/Rectangle) out
private void FadeSelectedModeOut(object sender, EventArgs e)
{
DoubleAnimation anim = new DoubleAnimation(0, TimeSpan.FromSeconds(0.25))
{
BeginTime = TimeSpan.FromMilliseconds(1000),
From = SelectedMode.Opacity,
To = 0
};
SelectedMode.BeginAnimation(OpacityProperty, anim);
}