/// <summary>
/// Called after a UISensitiveObject has been attached to the sensitive-tree.
/// </summary>
/// <param name="obj">The new object.</param>
private void ObjectAttached(UISensitiveObject obj)
{
if (this.raisingMouseEvents)
{
/// Postpone the needed sensor operations
List <UISensitiveObject> newObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref newObjects);
foreach (UISensitiveObject newObj in newObjects)
{
/// Save the created sensor and indicate that it will have to be registered.
UIMouseSensor newSensor = newObj.MouseSensor as UIMouseSensor;
if (newSensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.tmpSensors.Add(newSensor);
this.tmpSensorOperations.Add(true);
}
}
else
{
/// Execute the needed sensor operations
List <UISensitiveObject> newObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref newObjects);
foreach (UISensitiveObject newObj in newObjects)
{
UIMouseSensor newSensor = newObj.MouseSensor as UIMouseSensor;
if (newSensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.allSensors.Add(newSensor);
}
}
}
/// <summary>
/// Raises the mouse wheel events on the appropriate sensor.
/// </summary>
private void RaiseMouseWheelEvents(int wheelPos,
RCIntVector newPointerPos,
UIMouseSensor targetSensor)
{
if (this.wheelPosition != wheelPos)
{
targetSensor.OnWheel(newPointerPos, wheelPos - this.wheelPosition);
}
}
/// <see cref="UIObject.Render_i"/>
protected override void Render_i(IUIRenderContext renderContext)
{
UIMouseSensor sensor = this.activeSensor != null ? this.activeSensor : this.touchedSensors[this.touchedSensors.Count - 1];
UIPointer pointer = sensor.GetMousePointer(this.pointerPosition);
if (pointer == null)
{
pointer = this.defaultMousePointer;
}
if (pointer != null)
{
renderContext.RenderSprite(pointer.Icon,
this.pointerPosition - pointer.Offset);
}
}
/// <summary>
/// Called before a UISensitiveObject is detached from the sensitive-tree.
/// </summary>
/// <param name="obj">The detaching object.</param>
private void ObjectDetaching(UISensitiveObject obj)
{
if (this.raisingMouseEvents)
{
/// Postpone the needed sensor operations
List <UISensitiveObject> detachingObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref detachingObjects);
foreach (UISensitiveObject detachingObj in detachingObjects)
{
/// Save the removed sensor and indicate that it will have to be unregistered.
UIMouseSensor removedSensor = detachingObj.MouseSensor as UIMouseSensor;
if (removedSensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.tmpSensors.Add(removedSensor);
this.tmpSensorOperations.Add(false);
}
}
else
{
/// Execute the needed sensor operations
List <UISensitiveObject> detachingObjects = new List <UISensitiveObject>();
obj.WalkSensitiveTreeDFS(ref detachingObjects);
foreach (UISensitiveObject detachingObj in detachingObjects)
{
UIMouseSensor deletedSensor = detachingObj.MouseSensor as UIMouseSensor;
if (deletedSensor != null && this.allSensors.Contains(deletedSensor))
{
deletedSensor.Reset();
this.allSensors.Remove(deletedSensor);
int idxOfDeleted = this.touchedSensors.IndexOf(deletedSensor);
if (idxOfDeleted != -1)
{
this.touchedSensors.RemoveRange(idxOfDeleted, this.touchedSensors.Count - idxOfDeleted);
}
if (this.activeSensor == deletedSensor)
{
this.activeSensor = null;
}
}
else
{
throw new UIException("UIMouseSensor not registered!");
}
}
}
}
/// <summary>
/// Gets the sensors that are visible at the current position of the mouse pointer.
/// </summary>
private List <UIMouseSensor> GetVisibleSensors(RCIntVector pointerPosition)
{
List <UISensitiveObject> touchedObjects = this.targetObject.GetObjectsVisibleAt(pointerPosition);
List <UIMouseSensor> retList = new List <UIMouseSensor>();
foreach (UISensitiveObject obj in touchedObjects)
{
UIMouseSensor sensor = obj.MouseSensor as UIMouseSensor;
if (sensor == null)
{
throw new UIException("Mouse sensor not found!");
}
retList.Add(sensor);
}
return(retList);
}
/// <summary>
/// Raises the mouse button events on the appropriate sensor.
/// </summary>
private void RaiseMouseButtonEvents(RCSet <UIMouseButton> buttons,
RCIntVector newPointerPos,
UIMouseSensor targetSensor)
{
foreach (UIMouseButton btn in this.pressedButtons)
{
if (!buttons.Contains(btn))
{
targetSensor.OnButtonUp(newPointerPos, btn);
}
}
foreach (UIMouseButton btn in buttons)
{
if (!this.pressedButtons.Contains(btn))
{
targetSensor.OnButtonDown(newPointerPos, btn);
}
}
}
/// <summary>
/// Executes the saved sensor operations.
/// </summary>
private void ExecuteSensorOperations()
{
for (int i = 0; i < this.tmpSensorOperations.Count; i++)
{
if (this.tmpSensorOperations[i])
{
/// Register sensor
UIMouseSensor newSensor = this.tmpSensors[i];
this.allSensors.Add(newSensor);
}
else
{
/// Unregister sensor
UIMouseSensor deletedSensor = this.tmpSensors[i];
if (this.allSensors.Contains(deletedSensor))
{
deletedSensor.Reset();
this.allSensors.Remove(deletedSensor);
int idxOfDeleted = this.touchedSensors.IndexOf(deletedSensor);
if (idxOfDeleted != -1)
{
this.touchedSensors.RemoveRange(idxOfDeleted, this.touchedSensors.Count - idxOfDeleted);
}
if (this.activeSensor == deletedSensor)
{
this.activeSensor = null;
}
}
else
{
throw new UIException("UIMouseSensor not registered!");
}
}
}
this.tmpSensorOperations.Clear();
this.tmpSensors.Clear();
}
/// <summary>
/// Ctor.
/// </summary>
/// <param name="targetObj">The UISensitiveObject that this UIMouseManager will be bound to.</param>
public UIMouseManager(UISensitiveObject targetObj)
: base(targetObj.PixelScaling, targetObj.Position, targetObj.Range)
{
if (targetObj == null)
{
throw new ArgumentNullException("targetObj");
}
if (targetObj.SensitiveParent != null)
{
throw new InvalidOperationException("targetObj must be the root of the sensitive-tree!");
}
if (targetObj.Parent == null)
{
throw new InvalidOperationException("targetObj must have a parent!");
}
this.objectDisposed = false;
this.raisingMouseEvents = false;
this.targetObject = targetObj;
this.defaultMousePointer = null;
/// Attach this UIMouseManager to the parent of targetObject.
this.targetObject.Parent.Attach(this);
this.SendInFrontOfTargetObject();
/// Subscribe for the events of the target object.
this.targetObject.Attached += this.OnInvalidTreeOperation;
this.targetObject.Detached += this.OnInvalidTreeOperation;
this.targetObject.BroughtForward += this.OnInvalidTreeOperation;
this.targetObject.BroughtToTop += this.OnInvalidTreeOperation;
this.targetObject.SentBackward += this.OnInvalidTreeOperation;
this.targetObject.SentToBottom += this.OnInvalidTreeOperation;
this.targetObject.ClipRectChanged += this.OnInvalidTreeOperation;
this.targetObject.CloakRectChanged += this.OnInvalidTreeOperation;
this.targetObject.RangeRectChanged += this.OnInvalidTreeOperation;
this.targetObject.PositionChanged += this.OnInvalidTreeOperation;
this.targetObject.ObjectAttached += this.ObjectAttached;
this.targetObject.ObjectDetaching += this.ObjectDetaching;
/// Subscribe for the events of this object
this.Attached += this.OnInvalidTreeOperation;
this.Detached += this.OnInvalidTreeOperation;
this.BroughtForward += this.OnInvalidTreeOperation;
this.BroughtToTop += this.OnInvalidTreeOperation;
this.SentBackward += this.OnInvalidTreeOperation;
this.SentToBottom += this.OnInvalidTreeOperation;
this.ClipRectChanged += this.OnInvalidTreeOperation;
this.CloakRectChanged += this.OnInvalidTreeOperation;
this.RangeRectChanged += this.OnInvalidTreeOperation;
this.PositionChanged += this.OnInvalidTreeOperation;
this.ChildAttached += this.OnInvalidTreeOperation;
this.ChildDetached += this.OnInvalidTreeOperation;
this.AbsolutePixelScalingChanged += this.OnInvalidTreeOperation;
/// Subscribe for system mouse events.
UIRoot.Instance.MouseAccess.StateChanged += this.OnMouseEvent;
/// Set the initial position of the mouse pointer in the scaled range
this.scale = 1.0f;
this.scaledRange = this.Range * this.scale;
this.scaledPosition = this.scaledRange.Location + (this.scaledRange.Size / 2);
this.pointerPosition = this.scaledPosition / this.scale;
/// Set the initial state of the mouse wheel and buttons
this.pressedButtons = new RCSet <UIMouseButton>();
this.wheelPosition = 0;
/// Create the UIMouseSensors
this.allSensors = new RCSet <UIMouseSensor>();
this.touchedSensors = new List <UIMouseSensor>();
this.activeSensor = null;
this.tmpSensorOperations = new List <bool>();
this.tmpSensors = new List <UIMouseSensor>();
List <UISensitiveObject> sensitiveTree = new List <UISensitiveObject>();
this.targetObject.WalkSensitiveTreeDFS(ref sensitiveTree);
foreach (UISensitiveObject obj in sensitiveTree)
{
UIMouseSensor sensor = obj.MouseSensor as UIMouseSensor;
if (sensor == null)
{
throw new UIException("Incompatible mouse sensor!");
}
this.allSensors.Add(sensor);
}
}