QgsRubberBand* QgsMapToolRotateLabel::createRotationPreviewBox()
{
delete mRotationPreviewBox;
QVector< QgsPoint > boxPoints = mCurrentLabel.pos.cornerPoints;
if ( boxPoints.size() < 1 )
{
return nullptr;
}
mRotationPreviewBox = new QgsRubberBand( mCanvas, QgsWkbTypes::LineGeometry );
mRotationPreviewBox->setColor( QColor( 0, 0, 255, 65 ) );
mRotationPreviewBox->setWidth( 3 );
setRotationPreviewBox( mCurrentRotation - mStartRotation );
return mRotationPreviewBox;
}
void QgsMapToolRotateLabel::canvasMoveEvent( QgsMapMouseEvent *e )
{
if ( mLabelRubberBand )
{
QgsPointXY currentPoint = toMapCoordinates( e->pos() );
double azimuth = convertAzimuth( mRotationPoint.azimuth( currentPoint ) );
double azimuthDiff = azimuth - mCurrentMouseAzimuth;
azimuthDiff = azimuthDiff > 180 ? azimuthDiff - 360 : azimuthDiff;
mCurrentRotation += azimuthDiff;
if ( mCurrentRotation >= 360 || mCurrentRotation <= -360 )
mCurrentRotation = std::fmod( mCurrentRotation, 360.0 );
if ( mCurrentRotation < 0 )
mCurrentRotation += 360.0;
mCurrentMouseAzimuth = std::fmod( azimuth, 360.0 );
//if shift-modifier is pressed, round to 15 degrees
int displayValue;
if ( e->modifiers() & Qt::ControlModifier )
{
displayValue = roundTo15Degrees( mCurrentRotation );
mCtrlPressed = true;
}
else
{
displayValue = ( int )( mCurrentRotation );
mCtrlPressed = false;
}
if ( mRotationItem )
{
mRotationItem->setSymbolRotation( displayValue );
setRotationPreviewBox( displayValue - mStartRotation );
mRotationItem->update();
}
}
}
void QgsMapToolRotateLabel::canvasMoveEvent( QgsMapMouseEvent* e )
{
if ( mLabelRubberBand )
{
QgsPoint currentPoint = toMapCoordinates( e->pos() );
double azimuth = azimuthToCCW( mRotationPoint.azimuth( currentPoint ) );
double azimuthDiff = azimuth - mCurrentMouseAzimuth;
azimuthDiff = azimuthDiff > 180 ? azimuthDiff - 360 : azimuthDiff;
mCurrentRotation += azimuthDiff;
mCurrentRotation = mCurrentRotation - static_cast<float>( static_cast<int>( mCurrentRotation / 360 ) ) * 360; //mCurrentRotation % 360;
mCurrentRotation = mCurrentRotation < 0 ? 360 - mCurrentRotation : mCurrentRotation;
mCurrentMouseAzimuth = azimuth - static_cast<float>( static_cast<int>( azimuth / 360 ) ) * 360;
//if shift-modifier is pressed, round to 15 degrees
int displayValue;
if ( e->modifiers() & Qt::ControlModifier )
{
displayValue = roundTo15Degrees( mCurrentRotation );
mCtrlPressed = true;
}
else
{
displayValue = ( int )( mCurrentRotation );
mCtrlPressed = false;
}
if ( mRotationItem )
{
mRotationItem->setSymbolRotation( displayValue );
setRotationPreviewBox( displayValue - mStartRotation );
mRotationItem->update();
}
}
}