internal bool HandledMouseScroll()
{
if (!Visible || !enabled)
{
return(false);
}
for (var index = children.Count - 1; index >= 0; --index)
{
if (children[index].HandledMouseScroll())
{
return(true);
}
}
if (!RegisterEventTypes.HasFlag(EventType.MouseScroll) || !MouseDirectlyOver)
{
return(false);
}
OnMouseScroll();
MouseScrolled?.Invoke(this, EventArgs.Empty);
return(true);
}
private static void OnMouseScrolled(Screen s, MouseScrollEvent e)
{
MouseScrolled?.Invoke(s, e);
}
/// <summary>
/// Determines the input into the simulation.
/// </summary>
protected void GetInput()
{
MouseState mouseState = Mouse.GetState();
if (LeftMouseButtonPressed)
{
// Left button pressed
if (mouseState.LeftButton != lastMouseState.LeftButton)
{
// Left button just pressed
LeftMouseButtonJustPressed?.Invoke(this, new EventArgs());
}
}
else
{
// Left button not pressed
if (mouseState.LeftButton != lastMouseState.LeftButton)
{
// Left button just released
LeftMouseButtonJustReleased?.Invoke(this, new EventArgs());
}
}
if (RightMouseButtonPressed)
{
// Right button pressed
if (mouseState.RightButton != lastMouseState.RightButton)
{
// Right button just pressed
RightMouseButtonJustPressed?.Invoke(this, new EventArgs());
}
}
else
{
// Right button not pressed
if (mouseState.RightButton != lastMouseState.RightButton)
{
// Right button just released
RightMouseButtonJustReleased?.Invoke(this, new EventArgs());
}
}
if (MiddleMouseButtonPressed)
{
// Middle button pressed
if (mouseState.MiddleButton != lastMouseState.MiddleButton)
{
// Middle button just pressed
MiddleMouseButtonJustPressed?.Invoke(this, new EventArgs());
}
}
else
{
// Middle button not pressed
if (mouseState.MiddleButton != lastMouseState.MiddleButton)
{
// Middle button just released
MiddleMouseButtonJustReleased?.Invoke(this, new EventArgs());
}
}
// Scrolling
int newMouseScroll = mouseState.ScrollWheelValue;
// Mouse wheel up
if (newMouseScroll > lastMouseState.ScrollWheelValue)
{
MouseScrolled?.Invoke(this, new MouseScrollArgs(MouseScrollDiretion.Up));
}
// Mouse wheel down
else if (newMouseScroll < lastMouseState.ScrollWheelValue)
{
MouseScrolled?.Invoke(this, new MouseScrollArgs(MouseScrollDiretion.Down));
}
// Left button hold
if (LeftMouseButtonPressed)
{
if (lastMouseState.LeftButton == ButtonState.Pressed)
{
if (IsObjectSelected && SelectedObject is IMovable movable && movable.Movable)
{
// Check for mouse movement
if (mouseState.Position != lastMouseState.Position)
{
// Move object
Vector2 mouseMovement = mouseState.Position.ToVector2() - lastMouseState.Position.ToVector2();
objectMoving = true;
movable.Moving = true;
movable.Move(mouseMovement / Camera.Zoom);
}
else
{
movable.Moving = false;
}
}
}
}
// Middle button hold
if (MiddleMouseButtonPressed && !LeftMouseButtonPressed)
{
if (lastMouseState.MiddleButton == ButtonState.Pressed)
{
// Check for mouse movement
if (mouseState.Position != lastMouseState.Position)
{
// Move camera
Vector2 mouseMovement = mouseState.Position.ToVector2() - lastMouseState.Position.ToVector2();
Camera.Pan(mouseMovement);
}
}
}
// Reset relative mouse state
lastMouseState = mouseState;
}
//this gets called by GLFW (unmanaged code)
private void MouseCallback(int btn, int action, int mods)
{
//scroll (3 was chosen by me, not glfw)
if (btn == 3)
{
MouseScrolled.Invoke(action, this);
MouseScrollDirection = action;
return;
}
//left click
if (btn == 0 && action == 1)
{
if (leftLifted)
{
MouseLeftClick.Invoke(MousePosition, this);
MouseLeftClickScaled.Invoke(MousePositionScaled, this);
iLastLeft = MousePosition;
leftClickToggle = true;
}
leftLifted = false;
}
if (btn == 0 && action == 0)
{
leftLifted = true;
MouseLeftRelease.Invoke(MousePosition, this);
MouseLeftReleaseScaled.Invoke(MousePositionScaled, this);
return;
}
//right click
if (btn == 1 && action == 1)
{
if (rightLifted)
{
MouseRightClick.Invoke(MousePosition, this);
MouseRightClickScaled.Invoke(MousePositionScaled, this);
iLastRight = MousePosition;
rightClickToggle = true;
}
rightLifted = false;
return;
}
if (btn == 1 && action == 0)
{
rightLifted = true;
MouseRightRelease.Invoke(MousePosition, this);
MouseRightReleaseScaled.Invoke(MousePositionScaled, this);
return;
}
//middle click
if (btn == 2 && action == 1)
{
if (middleLifted)
{
MouseMiddleClick.Invoke(MousePosition, this);
MouseMiddleClickScaled.Invoke(MousePositionScaled, this);
}
middleLifted = false;
return;
}
if (btn == 2 && action == 0)
{
middleLifted = true;
MouseMiddleRelease.Invoke(MousePosition, this);
MouseMiddleReleaseScaled.Invoke(MousePositionScaled, this);
return;
}
}
private void OnMouseScrolled(IMouse mouse, ScrollWheel scrollWheel)
{
MouseScrolled?.Invoke(mouse, new Vector2(scrollWheel.X, scrollWheel.Y));
}
public override void OnMouseScrolled(object sender, EventArgs args)
{
base.OnMouseScrolled(sender, args);
MouseScrolled?.Invoke(sender, args);
}