private bool canFireClickEvent( TouchRaycast info, TouchRaycast touch )
{
#region Should not fire click event if control has been moved
var p2u = control.PixelsToUnits();
var startPosition = controlStartPosition / p2u;
var currentPosition = control.transform.position / p2u;
if( Vector3.Distance( startPosition, currentPosition ) > 1f )
return false;
#endregion
return true;
}
internal void Process( Transform transform, Camera renderCamera, IDFTouchInputSource input, bool retainFocusSetting )
{
controlUnderMouse = null;
var touches = input.Touches;
for( int i = 0; i < touches.Count; i++ )
{
// Dereference Touch information
var touch = touches[ i ];
// Keep track of the last control under the "mouse"
var touchedControl = dfGUIManager.HitTestAll( touch.position );
if( touchedControl != null && touchedControl.transform.IsChildOf( manager.transform ) )
{
controlUnderMouse = touchedControl;
}
#region Don't track touches on empty space
if( controlUnderMouse == null )
{
if( touch.phase == TouchPhase.Began )
{
if( !retainFocusSetting && untracked.Count == 0 )
{
var focusControl = dfGUIManager.ActiveControl;
if( focusControl != null && focusControl.transform.IsChildOf( manager.transform ) )
{
focusControl.Unfocus();
}
}
untracked.Add( touch.fingerId );
continue;
}
}
if( untracked.Contains( touch.fingerId ) )
{
if( touch.phase == TouchPhase.Ended )
untracked.Remove( touch.fingerId );
continue;
}
#endregion
var ray = renderCamera.ScreenPointToRay( touch.position );
var info = new TouchRaycast( controlUnderMouse, touch, ray );
var captured = tracked.FirstOrDefault( x => x.IsTrackingFinger( info.FingerID ) );
if( captured != null )
{
captured.Process( info );
continue;
}
var processed = false;
for( int x = 0; x < tracked.Count; x++ )
{
if( tracked[ x ].Process( info ) )
{
processed = true;
break;
}
}
if( !processed && controlUnderMouse != null )
{
if( !tracked.Any( x => x.control == controlUnderMouse ) )
{
var newTracker = new ControlTouchTracker( manager, controlUnderMouse );
tracked.Add( newTracker );
newTracker.Process( info );
}
}
}
}
/// <summary>
/// Processes touch information for a single control
/// </summary>
/// <param name="info">The touch/raycast data to be processed</param>
/// <returns>Returns TRUE if the touch information was processed</returns>
public bool Process( TouchRaycast info )
{
#region Drag / Drop
if( IsDragging )
{
// Not interested in any fingers other than the one that
// started the drag operation
if( !capture.Contains( info.FingerID ) )
return false;
// Nothing to do if there's no user action
if( info.Phase == TouchPhase.Stationary )
return true;
// If the touch was cancelled, raise OnDragEnd event
if( info.Phase == TouchPhase.Canceled )
{
control.OnDragEnd( new dfDragEventArgs( control, dfDragDropState.Cancelled, dragData, info.ray, info.position ) );
dragState = dfDragDropState.None;
touches.Clear();
capture.Clear();
return true;
}
// If the finger was lifted, attempt drop
if( info.Phase == TouchPhase.Ended )
{
// Dropped on nothing
if( info.control == null || info.control == control )
{
control.OnDragEnd( new dfDragEventArgs( control, dfDragDropState.CancelledNoTarget, dragData, info.ray, info.position ) );
dragState = dfDragDropState.None;
touches.Clear();
capture.Clear();
return true;
}
// Dropped on another control
var dropArgs = new dfDragEventArgs( info.control, dfDragDropState.Dragging, dragData, info.ray, info.position );
info.control.OnDragDrop( dropArgs );
// If there was no event consumer, or if the event consumer did not
// change the state from Dragging (which is not a valid state for
// a drop event) then just cancel the operation
if( !dropArgs.Used || dropArgs.State != dfDragDropState.Dropped )
{
dropArgs.State = dfDragDropState.Cancelled;
}
// Let the control know that it is no longer being dragged
var endArgs = new dfDragEventArgs( control, dropArgs.State, dragData, info.ray, info.position );
endArgs.Target = info.control;
control.OnDragEnd( endArgs );
// Clear state
dragState = dfDragDropState.None;
touches.Clear();
capture.Clear();
return true;
}
return true;
}
#endregion
#region New touch for this control
if( !touches.ContainsKey( info.FingerID ) )
{
// Touch is not over control, and is not "captured" by control
if( info.control != control )
return false;
// Start tracking this finger
touches[ info.FingerID ] = info;
// See if this is the first touch to be tracked for this control
if( touches.Count == 1 )
{
// This is the first Touch to be associated with the control
control.OnMouseEnter( info );
// If the touch was also started while over the control,
// then raise the OnMouseDown event
if( info.Phase == TouchPhase.Began )
{
capture.Add( info.FingerID );
controlStartPosition = control.transform.position;
control.OnMouseDown( info );
// Prevent "click-through"
if( Event.current != null )
Event.current.Use();
}
return true;
}
// Switch control to "multi-touch" mode if touch began on control,
// otherwise ignore the new touch info
if( info.Phase == TouchPhase.Began )
{
// Send multi-touch event
var activeTouches = getActiveTouches();
var multiTouchArgs = new dfTouchEventArgs( control, activeTouches, info.ray );
control.OnMultiTouch( multiTouchArgs );
}
return true;
}
#endregion
#region Previously tracked touch has now ended
if( info.Phase == TouchPhase.Canceled || info.Phase == TouchPhase.Ended )
{
var phase = info.Phase;
var touch = touches[ info.FingerID ];
// Remove the finger from the list of touches
touches.Remove( info.FingerID );
if( touches.Count == 0 && phase != TouchPhase.Canceled )
{
if( capture.Contains( info.FingerID ) )
{
if( canFireClickEvent( info, touch ) )
{
if( info.control == this.control )
{
if( info.touch.tapCount > 1 )
control.OnDoubleClick( info );
else
control.OnClick( info );
}
}
info.control = this.control;
this.control.OnMouseUp( info );
}
capture.Remove( info.FingerID );
return true;
}
else
{
capture.Remove( info.FingerID );
}
if( touches.Count == 1 )
{
// Explicitly notify control that multi-touch state has ended
control.OnMultiTouchEnd();
return true;
}
}
#endregion
#region Multi-touch events
// If there is more than one touch active for this control,
// then raise the OnMultiTouch event instead of converting
// the touch info to mouse events
if( touches.Count > 1 )
{
var activeTouches = getActiveTouches();
var multiTouchArgs = new dfTouchEventArgs( control, activeTouches, info.ray );
control.OnMultiTouch( multiTouchArgs );
return true;
}
#endregion
// If the touch has not moved, send hover message
if( !IsDragging && info.Phase == TouchPhase.Stationary )
{
if( info.control == this.control )
{
control.OnMouseHover( info );
return true;
}
return false;
}
#region See if the control supports (and allows) drag-and-drop
var canStartDrag =
capture.Contains( info.FingerID ) &&
dragState == dfDragDropState.None &&
info.Phase == TouchPhase.Moved;
if( canStartDrag )
{
// Query the control to see if drag-and-drop is allowed
var dragStartArgs = (dfDragEventArgs)info;
control.OnDragStart( dragStartArgs );
// If control set State and Used properties to the correct values,
// enter drag-and-drop mode
if( dragStartArgs.State == dfDragDropState.Dragging && dragStartArgs.Used )
{
this.dragState = dfDragDropState.Dragging;
this.dragData = dragStartArgs.Data;
return true;
}
// Flag that we've already tried drag and drop
this.dragState = dfDragDropState.Denied;
}
#endregion
// Check for mouse leave
if( info.control != this.control )
{
// If "capture" is not active, fire the OnMouseLeave event
if( !capture.Contains( info.FingerID ) )
{
info.control = this.control;
this.control.OnMouseLeave( info );
this.touches.Remove( info.FingerID );
return true;
}
}
// At this point, the only remaining option is to send OnMouseMove event
info.control = this.control;
this.control.OnMouseMove( info );
return true;
}
internal void Process( Transform transform, Camera renderCamera, dfList<Touch> touches, bool retainFocus )
{
for( int i = 0; i < touches.Count; i++ )
{
// Dereference Touch information
var touch = touches[ i ];
// Raycast from touch position to find the top-most control under the touch
var ray = renderCamera.ScreenPointToRay( touch.position );
var maxDistance = renderCamera.farClipPlane - renderCamera.nearClipPlane;
var hits = Physics.RaycastAll( ray, maxDistance, renderCamera.cullingMask );
// Keep track of the last control under the "mouse"
controlUnderMouse = clipCast( transform, hits );
#region Don't track touches on empty space
if( controlUnderMouse == null )
{
if( touch.phase == TouchPhase.Began )
{
untracked.Add( touch.fingerId );
continue;
}
}
if( untracked.Contains( touch.fingerId ) )
{
if( touch.phase == TouchPhase.Ended )
untracked.Remove( touch.fingerId );
continue;
}
#endregion
var info = new TouchRaycast( controlUnderMouse, touch, ray );
var captured = tracked.FirstOrDefault( x => x.IsTrackingFinger( info.FingerID ) );
if( captured != null )
{
captured.Process( info );
continue;
}
var processed = false;
for( int x = 0; x < tracked.Count; x++ )
{
if( tracked[ x ].Process( info ) )
{
processed = true;
break;
}
}
if( !processed && controlUnderMouse != null )
{
if( !tracked.Any( x => x.control == controlUnderMouse ) )
{
if( controlUnderMouse == null )
Debug.Log( "Tracking touch with no control: " + touch.fingerId );
var newTracker = new ControlTouchTracker( manager, controlUnderMouse );
tracked.Add( newTracker );
newTracker.Process( info );
}
}
}
}
private bool canFireClickEvent( TouchRaycast info, TouchRaycast touch )
{
if( manager.TouchClickRadius <= 0 )
return true;
var distanceFromStart = Vector2.Distance( info.position, touch.position );
return distanceFromStart < manager.TouchClickRadius;
}
private bool canFireClickEvent( TouchRaycast info, TouchRaycast touch )
{
#region Should not fire click event if control has been moved
var p2u = control.PixelsToUnits();
var startPosition = controlStartPosition / p2u;
var currentPosition = control.transform.position / p2u;
if( Vector3.Distance( startPosition, currentPosition ) > 1f )
return false;
#endregion
if( manager.TouchClickRadius <= 0 )
return true;
var distanceFromStart = Vector2.Distance( info.position, touch.position );
return distanceFromStart <= manager.TouchClickRadius;
}
private bool canFireClickEvent( TouchRaycast info, TouchRaycast touch )
{
// It is possible that a control could have been deleted during event processing.
if( this.control == null )
return false;
#region Should not fire click event if control has been moved
var p2u = control.PixelsToUnits();
var startPosition = controlStartPosition / p2u;
var currentPosition = control.transform.position / p2u;
if( Vector3.Distance( startPosition, currentPosition ) > 1f )
return false;
#endregion
return true;
}
