// ****************************************************************************
//
// Function Name: RSingleSelection::GetRotateHandle( )
//
// Description: Retrieves a vector rect representing the rotation handle.
//
// Returns: Nothing
//
// Exceptions: Nothing
//
// ****************************************************************************
//
void RSingleSelection::GetRotateHandle( RRealVectorRect& rotateHandleRect ) const
{
// Get the bounding rect
YSelectionBoundingRect boundingRect;
GetSelectionBoundingRect( boundingRect );
RRealPoint centerPoint = boundingRect.GetCenterPoint( );
R2dTransform transform( boundingRect.GetTransform( ) );
transform.PostTranslate( centerPoint.m_x-boundingRect.m_TopLeft.m_x, centerPoint.m_y-boundingRect.m_TopLeft.m_y );
// Break the transform into its components
YAngle angle;
YRealDimension xScale;
YRealDimension yScale;
transform.Decompose( angle, xScale, yScale );
// Figure out where to end the line
RRealPoint lineEndPoint = GetRotateHandleCenterPoint( );
YRealDimension distance = centerPoint.Distance( lineEndPoint );
if ( xScale < 0 )
xScale = -xScale;
rotateHandleRect.Set( RRealSize(distance/xScale,1), transform );
// Convert to device units
RRealSize handleSize( kRotateHandleHitSize/2, kRotateHandleHitSize/2 );
::DeviceUnitsToLogicalUnits( handleSize, *m_pView );
rotateHandleRect.Inflate( handleSize );
}
// ****************************************************************************
//
// Function Name: RResizeSelectionTracker::BeginTracking( )
//
// Description: Called when tracking begins; ie. when the mouse button goes
// down.
//
// Returns: Nothing
//
// Exceptions: None
//
// ****************************************************************************
//
void RResizeSelectionTracker::BeginTracking( const RRealPoint& mousePoint, YModifierKey modifierKeys )
{
// Remove the selection
m_pSelection->Remove( FALSE );
// Get the hit object
RSingleSelection* pHitObject = m_pSelection->GetHitSingleSelection( mousePoint );
TpsAssert( pHitObject, "No hit object!" );
// Get its selection bounding rect
YSelectionBoundingRect selectionBoundingRect;
pHitObject->GetSelectionBoundingRect( selectionBoundingRect );
// Get the bounding rect of the actual object
YSelectionBoundingRect objectBoundingRect;
pHitObject->GetObjectBoundingRect( objectBoundingRect );
// Calculate the minimum scale factor
RRealSize minimumObjectSize = pHitObject->GetObjectMinimumSize( );
RRealSize maximumObjectSize = pHitObject->GetObjectMaximumSize( );
RRealSize currentObjectSize = objectBoundingRect.WidthHeight( );
m_MinimumScaleFactor.m_dx = minimumObjectSize.m_dx / currentObjectSize.m_dx;
m_MinimumScaleFactor.m_dy = minimumObjectSize.m_dy / currentObjectSize.m_dy;
m_MaximumScaleFactor.m_dx = maximumObjectSize.m_dx / currentObjectSize.m_dx;
m_MaximumScaleFactor.m_dy = maximumObjectSize.m_dy / currentObjectSize.m_dy;
// Hit test to figure out what kind of resizing we are doing
RSelection::EHitLocation eHitLocation = m_pSelection->HitTest( mousePoint );
// Get the center and start of scaling
RRealPoint selectionScalingCenter;
switch( eHitLocation )
{
case RSelection::kTopLeftResizeHandle :
selectionScalingCenter = selectionBoundingRect.m_BottomRight;
m_ScalingCenter = objectBoundingRect.m_BottomRight;
m_MouseDownPoint = objectBoundingRect.m_TopLeft;
break;
case RSelection::kTopRightResizeHandle :
selectionScalingCenter = selectionBoundingRect.m_BottomLeft;
m_ScalingCenter = objectBoundingRect.m_BottomLeft;
m_MouseDownPoint = objectBoundingRect.m_TopRight;
break;
case RSelection::kBottomRightResizeHandle :
selectionScalingCenter = selectionBoundingRect.m_TopLeft;
m_ScalingCenter = objectBoundingRect.m_TopLeft;
m_MouseDownPoint = objectBoundingRect.m_BottomRight;
break;
case RSelection::kBottomLeftResizeHandle :
selectionScalingCenter = selectionBoundingRect.m_TopRight;
m_ScalingCenter = objectBoundingRect.m_TopRight;
m_MouseDownPoint = objectBoundingRect.m_BottomLeft;
break;
case RSelection::kLeftResizeHandle :
::midpoint(selectionScalingCenter,selectionBoundingRect.m_TopRight,selectionBoundingRect.m_BottomRight);
::midpoint(m_ScalingCenter,objectBoundingRect.m_TopRight,objectBoundingRect.m_BottomRight);
::midpoint(m_MouseDownPoint,objectBoundingRect.m_TopLeft,objectBoundingRect.m_BottomLeft);
m_fFixVertical = TRUE;
break;
case RSelection::kTopResizeHandle :
::midpoint(selectionScalingCenter,selectionBoundingRect.m_BottomLeft,selectionBoundingRect.m_BottomRight);
::midpoint(m_ScalingCenter,objectBoundingRect.m_BottomLeft,objectBoundingRect.m_BottomRight);
::midpoint(m_MouseDownPoint,objectBoundingRect.m_TopLeft,objectBoundingRect.m_TopRight);
m_fFixHorizontal = TRUE;
break;
case RSelection::kRightResizeHandle :
::midpoint(selectionScalingCenter,selectionBoundingRect.m_TopLeft,selectionBoundingRect.m_BottomLeft);
::midpoint(m_ScalingCenter,objectBoundingRect.m_TopLeft,objectBoundingRect.m_BottomLeft);
::midpoint(m_MouseDownPoint,objectBoundingRect.m_TopRight,objectBoundingRect.m_BottomRight);
m_fFixVertical = TRUE;
break;
case RSelection::kBottomResizeHandle :
::midpoint(selectionScalingCenter,selectionBoundingRect.m_TopLeft,selectionBoundingRect.m_TopRight);
::midpoint(m_ScalingCenter,objectBoundingRect.m_TopLeft,objectBoundingRect.m_TopRight);
::midpoint(m_MouseDownPoint,objectBoundingRect.m_BottomLeft,objectBoundingRect.m_BottomRight);
m_fFixHorizontal = TRUE;
break;
default :
TpsAssert( NULL, "Tracker is not resizing." );
}
// Save the difference between the size of the selection and object rects
m_RectDelta = selectionScalingCenter - m_ScalingCenter;
// Determine if we should maintain aspect ratio or not. Ask the component what its default
// behavior is, and invert that if the conrol key is down
m_fMaintainAspectRatio = pHitObject->MaintainAspectRatioIsDefault( );
if( pHitObject->CanChangeDefaultAspect( ) && ( modifierKeys & kAspectModifier ) )
m_fMaintainAspectRatio = static_cast<BOOLEAN>( !m_fMaintainAspectRatio );
// If we are fixing either Vertical or Horizontal dimension, we can't be
// maintaining aspect ratio
if ( m_fFixVertical || m_fFixHorizontal )
m_fMaintainAspectRatio = FALSE;
// Save the inverse transform of the object
m_InverseTransform = objectBoundingRect.GetTransform( );
m_InverseTransform.Invert( );
// Call the base class
RSelectionTracker::BeginTracking( mousePoint, modifierKeys );
}