// ****************************************************************************
//
// Function Name: RSingleSelection::DrawResizeTrackingRect( )
//
// Description: Draws the selection tracking rect for resizing.
//
// Returns: Nothing
//
// Exceptions: Memory
//
// ****************************************************************************
//
void RSingleSelection::DrawResizeTrackingFeedback( RDrawingSurface& drawingSurface,
const R2dTransform& transform,
const RRealPoint& scalingCenter,
const RRealSize& scaleFactor,
BOOLEAN fMaintainAspectRatio ) const
{
if( m_pSelectedObject->GetComponentAttributes( ).IsResizable( ) )
{
// Setup the drawing surface
drawingSurface.SetPenWidth( kSelectionOutlineWidth );
drawingSurface.SetPenStyle( kSolidPen );
// Get the components bounding rect
YComponentBoundingRect boundingRect = m_pSelectedObject->GetBoundingRect( );
// Constrain the scale factor
RRealSize constrainedScaleFactor = m_pSelectedObject->ApplyResizeConstraint( scaleFactor );
// Dont force to maintain aspect ratio if it really doesnt want to
fMaintainAspectRatio = fMaintainAspectRatio && ::AreFloatsEqual( constrainedScaleFactor.m_dx, constrainedScaleFactor.m_dy );
// Add the scale operation
boundingRect.UnrotateAndScaleAboutPoint( scalingCenter, constrainedScaleFactor, m_pSelectedObject->GetMinimumSize( ), m_pSelectedObject->GetMaximumSize( ), fMaintainAspectRatio );
// Tell the object to draw tracking feedback
m_pSelectedObject->RenderTrackingFeedback( drawingSurface, boundingRect.GetTransform( ) * transform, *GetView( ) );
}
}
// ****************************************************************************
//
// Function Name: RSingleSelection::GetResizeTrackingFeedbackBoundingRect( )
//
// Description: Gets the bounding rect of resize tracking feedback
//
// Returns: Bounding rect
//
// Exceptions: Memory
//
// ****************************************************************************
//
RRealRect RSingleSelection::GetResizeTrackingFeedbackBoundingRect( const R2dTransform& transform,
const RRealPoint& scalingCenter,
const RRealSize& scaleFactor,
BOOLEAN fMaintainAspectRatio ) const
{
// Get the components bounding rect
YComponentBoundingRect boundingRect = m_pSelectedObject->GetBoundingRect( );
// Constrain the scale factor
RRealSize constrainedScaleFactor = m_pSelectedObject->ApplyResizeConstraint( scaleFactor );
// Dont force to maintain aspect ratio if it really doesnt want to
fMaintainAspectRatio = fMaintainAspectRatio && ::AreFloatsEqual( constrainedScaleFactor.m_dx, constrainedScaleFactor.m_dy );
// Add the scale operation
boundingRect.UnrotateAndScaleAboutPoint( scalingCenter, constrainedScaleFactor, m_pSelectedObject->GetMinimumSize( ), m_pSelectedObject->GetMaximumSize( ), fMaintainAspectRatio );
// Get the objects feedback size
return m_pSelectedObject->GetTrackingFeedbackBoundingRect( boundingRect.GetTransform( ) * transform );
}
// ****************************************************************************
//
// Function Name: RCompositeSelection::SetResizeCursor( )
//
// Description: Calculates which resize cursor to use, and sets it
//
// Returns: Nothing
//
// Exceptions: None
//
// ****************************************************************************
//
void RCompositeSelection::SetResizeCursor( RSingleSelection* pHitObject, EHitLocation eHitLocation ) const
{
// Get the center point of the object
YComponentBoundingRect boundingRect;
pHitObject->GetObjectBoundingRect( boundingRect );
RRealPoint centerPoint = boundingRect.GetCenterPoint( );
// Create a new bounding rect that is a square.
YComponentBoundingRect squareRect = boundingRect;
RRealSize size = squareRect.WidthHeight( );
if( size.m_dx > size.m_dy )
squareRect.UnrotateAndScaleAboutPoint( centerPoint, RRealSize( size.m_dy / size.m_dx, 1.0 ) );
else
squareRect.UnrotateAndScaleAboutPoint( centerPoint, RRealSize( 1.0, size.m_dx / size.m_dy ) );
// Select a point from this square based on the hit location
RRealPoint point;
switch( eHitLocation )
{
case kLeftResizeHandle :
::midpoint( point, squareRect.m_TopLeft,squareRect.m_BottomLeft);
break;
case kTopResizeHandle :
::midpoint( point, squareRect.m_TopLeft,squareRect.m_TopRight);
break;
case kRightResizeHandle :
::midpoint( point, squareRect.m_TopRight,squareRect.m_BottomRight);
break;
case kBottomResizeHandle :
::midpoint( point, squareRect.m_BottomLeft,squareRect.m_BottomRight);
break;
case kTopLeftResizeHandle :
point = squareRect.m_TopLeft;
break;
case kTopRightResizeHandle :
point = squareRect.m_TopRight;
break;
case kBottomLeftResizeHandle :
point = squareRect.m_BottomLeft;
break;
case kBottomRightResizeHandle :
point = squareRect.m_BottomRight;
break;
default :
TpsAssertAlways( "Invalid hit location in RCompositeSelection::SetResizeCursor( )." );
}
// Calculate the angle between a vertical line through the square center and
// a line connecting the calculatated point and the square center.
YAngle angle = ::atan2( (YFloatType)( point.m_x - centerPoint.m_x ), (YFloatType)( centerPoint.m_y - point.m_y ) );
// atan2 returns an angle between PI and -PI. Convert this to an angle between 0 and 2PI
if( angle < 0 )
angle += ( 2 * kPI );
// Select a cursor. We have 4 cursors to choose from, rotated in 45 degree
// increments. Divide the angle by 45 deg. and use the resulting octant
// number mod 4 to index into an array of cursor ids.
int nOctant = ::Round( angle / ( kPI / 4 ) );
TpsAssert( nOctant >= 0 && nOctant <= 8, "Invalid octant." );
#ifdef _WINDOWS
static LPCTSTR cursorArray[ 4 ] = { IDC_SIZENS, IDC_SIZENESW, IDC_SIZEWE, IDC_SIZENWSE };
#else
// REVIEW: define cursors for Mac
#endif
// Set the cursor
::GetCursorManager( ).SetCursor( cursorArray[ nOctant % 4 ] );
}