/// <summary>
/// Notifies the mouse handler that a mouse button was released.
/// </summary>
/// <param name="buttons">Button which was released.</param>
public void MouseButtonUp(MouseButtons buttons)
{
this.buttonTracker.ButtonRelease(buttons, this.currentState.X, this.currentState.Y);
this.currentState.PressedButtons &= ~buttons;
var mask = GetCallbackReasonRelease(buttons);
if ((mask & this.callbackMask) != 0)
{
this.reason = mask;
this.vm.RaiseInterrupt(CallbackInterrupt);
}
}
/// <summary>
/// Performs common handling of a move event.
/// </summary>
private void MouseMoved()
{
this.currentState.X = Math.Max(this.currentState.X, 0);
this.currentState.X = Math.Min(this.currentState.X, this.vm.VideoMode.Width - 1);
this.currentState.Y = Math.Max(this.currentState.Y, 0);
this.currentState.Y = Math.Min(this.currentState.Y, this.vm.VideoMode.Height - 1);
if (callbackMask.HasFlag(CallbackMask.Move))
{
this.reason = CallbackMask.Move;
this.vm.RaiseInterrupt(CallbackInterrupt);
}
this.vm.OnMouseMove(new MouseMoveEventArgs(this.currentState.X, this.currentState.Y));
}
/// <summary>
/// Calls the user-specified callback function.
/// </summary>
private void RaiseCallback()
{
int scaledX = GetScaledX(this.currentState.X);
int scaledY = GetScaledY(this.currentState.Y);
var p = this.vm.Processor;
p.AX = (short)reason;
p.BX = (short)currentState.PressedButtons;
p.CX = (short)scaledX;
p.DX = (short)scaledY;
p.SI = (ushort)callbackMotionCounterX;
p.DI = (ushort)callbackMotionCounterY;
this.callbackState = currentState;
this.reason = CallbackMask.Disabled;
Instructions.Call.FarAbsoluteCall(vm, (uint)((this.callbackSegment << 16) | this.callbackOffset));
}
