protected override void OnPointerPressed(PointerRoutedEventArgs e)
{
var pt = new UniPoint(e.GetCurrentPoint(this).Position.X, e.GetCurrentPoint(this).Position.Y);
selCoord = pt;
pt.X -= ((Width - cpRender.Bounds.Width) / 2);
pt.Y -= ((Height - cpRender.Bounds.Height) / 2);
if (!cpRender.Bounds.Contains((System.Drawing.PointF)pt))
{
selCoord = null;
return;
}
var c = cpRender.HitTest((int)pt.X, (int)pt.Y);
if (c == System.Drawing.Color.Empty)
{
selCoord = null;
return;
}
SetSelectedColor(c);
CapturePointer(e.Pointer);
colorDragging = true;
ColorHit?.Invoke(this, new ColorHitEventArgs(c));
}
private void PickerSite_MouseMove(object sender, MouseEventArgs e)
{
var pt = e.GetPosition(PickerSite);
var c = cpRender.HitTest((int)pt.X, (int)pt.Y);
if (c == System.Drawing.Color.Empty && e.LeftButton != MouseButtonState.Pressed)
{
Cursor = Cursors.Arrow;
}
else
{
Cursor = Cursors.Cross;
}
if (dragPick)
{
var ev = new ColorHitEventArgs(c);
ColorOver?.Invoke(this, ev);
if (e.LeftButton == MouseButtonState.Pressed)
{
SetSelectedColor(c);
ColorHit?.Invoke(this, ev);
}
}
}
void OnTouch(object sender, TouchActionEventArgs args)
{
if (args.Type == TouchActionType.Pressed || args.Type == TouchActionType.Moved)
{
var pt = new UniPoint(args.Location.X, args.Location.Y);
selCoord = pt;
pt.X -= (Width - cpRender.Bounds.Width) / 2;
pt.Y -= (Height - cpRender.Bounds.Height) / 2;
if (!cpRender.Bounds.Contains((System.Drawing.PointF)pt))
{
selCoord = null;
Canvas.InvalidateSurface();
return;
}
var c = cpRender.HitTest((int)pt.X, (int)pt.Y);
if (c == System.Drawing.Color.Empty)
{
selCoord = null;
Canvas.InvalidateSurface();
return;
}
Canvas.InvalidateSurface();
SetSelectedColor(c);
ColorHit?.Invoke(this, new ColorHitEventArgs(c));
}
else if (args.Type == TouchActionType.Moved)
{
var pt = new UniPoint(args.Location.X, args.Location.Y);
pt.X -= (Width - cpRender.Bounds.Width) / 2;
pt.Y -= (Height - cpRender.Bounds.Height) / 2;
if (!cpRender.Bounds.Contains((System.Drawing.PointF)pt))
{
return;
}
var c = cpRender.HitTest((int)pt.X, (int)pt.Y);
if (c == System.Drawing.Color.Empty)
{
return;
}
ColorOver?.Invoke(this, new ColorHitEventArgs(c));
}
}
private void PickerSite_MouseDown(object sender, MouseButtonEventArgs e)
{
if (e.MouseDevice.LeftButton == MouseButtonState.Pressed)
{
if (Keyboard.Modifiers == ModifierKeys.Control)
{
SelectedColor = null;
SetSelectedColor(null);
dragPick = false;
return;
}
var pt = e.GetPosition(PickerSite);
var c = cpRender.HitTest((int)pt.X, (int)pt.Y);
SetSelectedColor(c);
ColorHit?.Invoke(this, new ColorHitEventArgs(c));
dragPick = true;
}
}