public void HandleMouseButton(MousePosition position, byte button, bool pressed)
{
if (pressed)
{
if (this.pressedButtons.ContainsKey(button))
{
// Nani the blyat
return;
}
var buttonObject = SystemMouseButton.GetButtonFromPFValue(button);
this.pressedButtons.Add(button, buttonObject);
// If no buttons were pressed previously, try to acquire the mouse capture on
// the view below the mouse pointer.
if (this.pressedButtons.Count == 1)
{
// Find the view below the mouse pointer. This can return `null`.
var view = this.window.MouseHitTest(position.Client);
// Capture the view. This can also return `null` on failure.
this.mouseCapture = view?.AcquireMouseCapture(Instance);
}
if (this.mouseCapture is View.MouseCapture capture)
{
// Send the event to the captured view
capture.MouseDown(new MouseButtonEventArgs(
TranslatePoint(position), buttonObject));
}
}
else
{
if (!this.pressedButtons.TryGetValue(button, out var buttonObject))
{
// Nani the blyat
return;
}
this.pressedButtons.Remove(button);
if (this.mouseCapture is View.MouseCapture capture)
{
// Send the event to the captured view
capture.MouseUp(new MouseButtonEventArgs(
TranslatePoint(position), buttonObject));
// If it was the last button held down, then release the mouse capture
if (this.pressedButtons.Count == 0)
{
capture.Dispose();
this.mouseCapture = null;
}
}
}
}
/// <summary>
/// Checks the validity of mouse capture and releases it if necessary.
/// </summary>
public void Update()
{
if (this.mouseCapture is View.MouseCapture capture)
{
if (capture.View.Window != this.window)
{
// This view is no longer in the same window -- release the mouse capture
capture.Dispose();
this.mouseCapture = null;
}
}
}
public void Dispose()
{
this.mouseCapture?.Dispose();
this.mouseCapture = null;
}
