protected virtual void MouseUp(UIMouseButtonEventArgs args)
{
m_State = UIComponentState.Hover;
}
internal static void HandleInput(UI ui, ref InputHandlingFlags handlingFlags) // It has to be done here because at this point we have access to private members but. We don't want to attach every UI component to game engine's events, right?
{
Component tmp;
UIEventArgs args;
bool invalid = UIInvalid;
UIInvalid = false; // reset invalid flag so that it could be set again by events if needed
if ((handlingFlags & InputHandlingFlags.Mouse) != InputHandlingFlags.None)
{
IMouseDevice mouse = IL.FirstMouseDevice;
/*
* if( m_PrevMouseX < 0 ) { // first initialization of mouse coords
* m_PrevMouseX = mouse.X;
* m_PrevMouseY = mouse.Y;
* }
* int mouseDeltaX = mouse.X - m_PrevMouseX;
* int mouseDeltaY = mouse.Y - m_PrevMouseY;
* MouseButton mouseButtonDelta = mouse.Buttons ^ mouse.PrevButtons;
*/
bool mouseMoved = mouse.DeltaX != 0 || mouse.DeltaY != 0;
bool wheelMoved = mouse.DeltaWheel != 0;
bool buttonChanged = mouse.ChangedButtons != MouseButton.None;
//m_PrevMouseX = mouse.X;
//m_PrevMouseY = mouse.Y;
if (mouseMoved && m_ClickButton != MouseButton.None)
{
if (mouse.X < m_ClickMouseX - ClickDistance ||
mouse.X > m_ClickMouseX + ClickDistance ||
mouse.Y < m_ClickMouseY - ClickDistance ||
mouse.Y > m_ClickMouseY + ClickDistance)
{
// moved outside the max click distance
m_ClickButton = MouseButton.None;
m_ClickMouseX = -1;
m_ClickMouseY = -1;
}
}
if (mouseMoved || wheelMoved || buttonChanged || invalid)
{
HitTestResult hit = m_LastHit = ui.HitTest(mouse.X, mouse.Y);
// GameDebugger.Log("Hit: {0} ({1}, {2})", hit.Target, hit.X, hit.Y);
if (m_MouseEventReceiver != null)
{
// There is a function that has to capture absolutely all mouse events!
// Captured events are not propagated to parents!
if (mouseMoved && m_MouseEventReceiver != null)
{
args = new UIMouseMoveEventArgs(UIEventType.MouseMove, hit.Target, new Point2(hit.X, hit.Y), new Point2(mouse.DeltaX, mouse.DeltaY));
m_MouseEventReceiver((UIMouseMoveEventArgs)args);
}
if (wheelMoved && m_MouseEventReceiver != null)
{
args = new UIMouseWheelEventArgs(UIEventType.MouseWheel, hit.Target, new Point2(hit.X, hit.Y), mouse.DeltaWheel);
m_MouseEventReceiver((UIMouseWheelEventArgs)args);
// mousewheel will not affect scrollbars
}
if (buttonChanged && m_MouseEventReceiver != null)
{
MouseButtonCheckDelegate checkMouseButton = btn => {
if ((mouse.ChangedButtons & btn) != MouseButton.None && m_MouseEventReceiver != null)
{
if ((mouse.Buttons & btn) == MouseButton.None)
{
// button went up
args = new UIMouseButtonEventArgs(UIEventType.MouseUp, hit.Target, new Point2(hit.X, hit.Y), btn);
m_MouseEventReceiver((UIMouseButtonEventArgs)args);
if (!args.PreventDefault && m_ClickButton == btn && m_MouseEventReceiver != null)
{
m_ClickButton = MouseButton.None;
m_ClickMouseX = -1;
m_ClickMouseY = -1;
args = new UIMouseButtonEventArgs(UIEventType.MouseClick, hit.Target, new Point2(hit.X, hit.Y), btn);
m_MouseEventReceiver((UIMouseButtonEventArgs)args);
if (!args.PreventDefault && m_MouseEventReceiver != null)
{
if (m_LastClickTime + DoubleClickTimeout >= Application.InternalTimer.Time)
{
args = new UIMouseButtonEventArgs(UIEventType.MouseDblClick, hit.Target, new Point2(hit.X, hit.Y), btn);
m_MouseEventReceiver((UIMouseButtonEventArgs)args);
m_LastClickTime = 0.0;
}
else
{
m_LastClickTime = Application.InternalTimer.Time;
}
}
}
}
else
{
// mouse went down
args = new UIMouseButtonEventArgs(UIEventType.MouseDown, hit.Target, new Point2(hit.X, hit.Y), btn);
m_MouseEventReceiver((UIMouseButtonEventArgs)args);
if (!args.PreventDefault)
{
m_ClickButton = btn;
m_ClickMouseX = mouse.X;
m_ClickMouseY = mouse.Y;
}
}
}
};
checkMouseButton(MouseButton.Left);
checkMouseButton(MouseButton.Right);
checkMouseButton(MouseButton.Middle);
}
handlingFlags = handlingFlags & ~InputHandlingFlags.Mouse;
}
else
{
SetMouseOver(hit.Target, hit.X, hit.Y);
if (hit.Target != null)
{
handlingFlags = handlingFlags & ~InputHandlingFlags.Mouse;
if (mouseMoved)
{
args = new UIMouseMoveEventArgs(UIEventType.MouseMove, hit.Target, new Point2(hit.X, hit.Y), new Point2(mouse.DeltaX, mouse.DeltaY));
for (tmp = hit.Target; tmp != null && !args.StopPropagation; tmp = tmp.m_Parent)
{
if (tmp.OnMouseMove != null)
{
tmp.OnMouseMove((UIMouseMoveEventArgs)args);
}
}
}
if (wheelMoved)
{
args = new UIMouseWheelEventArgs(UIEventType.MouseWheel, hit.Target, new Point2(hit.X, hit.Y), mouse.DeltaWheel);
for (tmp = hit.Target; tmp != null && !args.StopPropagation; tmp = tmp.m_Parent)
{
if (tmp.OnMouseWheel != null)
{
tmp.OnMouseWheel((UIMouseWheelEventArgs)args);
}
}
if (!args.PreventDefault)
{
// Check if there is a scroll bar as a direct child and invoke mouse wheel event on it if there is one.
Component vscb = null, hscb = null;
foreach (Component child in hit.Target.Children)
{
if (child is VScrollBar)
{
vscb = child;
if (hscb != null)
{
break;
}
}
else if (child is HScrollBar)
{
hscb = child;
if (vscb != null)
{
break;
}
}
}
if (vscb != null)
{
hscb = vscb;
}
if (hscb != null && hscb.OnMouseWheel != null)
{
hscb.OnMouseWheel((UIMouseWheelEventArgs)args);
}
}
}
if (buttonChanged)
{
MouseButtonCheckDelegate checkMouseButton = btn => {
if ((mouse.ChangedButtons & btn) != MouseButton.None)
{
if ((mouse.Buttons & btn) == MouseButton.None)
{
// button went up
args = new UIMouseButtonEventArgs(UIEventType.MouseUp, hit.Target, new Point2(hit.X, hit.Y), btn);
for (tmp = hit.Target; tmp != null && !args.StopPropagation; tmp = tmp.m_Parent)
{
if (tmp.OnMouseUp != null)
{
tmp.OnMouseUp((UIMouseButtonEventArgs)args);
}
}
if (!args.PreventDefault && m_ClickButton == btn)
{
m_ClickButton = MouseButton.None;
m_ClickMouseX = -1;
m_ClickMouseY = -1;
args = new UIMouseButtonEventArgs(UIEventType.MouseClick, hit.Target, new Point2(hit.X, hit.Y), btn);
for (tmp = hit.Target; tmp != null && !args.StopPropagation; tmp = tmp.m_Parent)
{
if (tmp.OnMouseClick != null)
{
tmp.OnMouseClick((UIMouseButtonEventArgs)args);
}
}
if (!args.PreventDefault)
{
if (m_LastClickTime + DoubleClickTimeout >= Application.InternalTimer.Time)
{
args = new UIMouseButtonEventArgs(UIEventType.MouseDblClick, hit.Target, new Point2(hit.X, hit.Y), btn);
for (tmp = hit.Target; tmp != null && !args.StopPropagation; tmp = tmp.m_Parent)
{
if (tmp.OnMouseDblClick != null)
{
tmp.OnMouseDblClick((UIMouseButtonEventArgs)args);
}
}
m_LastClickTime = 0.0;
}
else
{
m_LastClickTime = Application.InternalTimer.Time;
}
}
}
}
else
{
// mouse went down
args = new UIMouseButtonEventArgs(UIEventType.MouseDown, hit.Target, new Point2(hit.X, hit.Y), btn);
for (tmp = hit.Target; tmp != null && !args.StopPropagation; tmp = tmp.m_Parent)
{
if (tmp.OnMouseDown != null)
{
tmp.OnMouseDown((UIMouseButtonEventArgs)args);
}
}
if (!args.PreventDefault)
{
m_ClickButton = btn;
m_ClickMouseX = mouse.X;
m_ClickMouseY = mouse.Y;
}
}
}
};
checkMouseButton(MouseButton.Left);
checkMouseButton(MouseButton.Right);
checkMouseButton(MouseButton.Middle);
}
}
}
}
else
{
// mouse state is same as in previous frame
if (m_MouseEventReceiver != null || m_LastHit.Target != null)
{
handlingFlags = handlingFlags & ~InputHandlingFlags.Mouse;
}
}
}
}
protected virtual void MouseDown(UIMouseButtonEventArgs args)
{
m_State = UIComponentState.MouseDown;
}