Collaboration diagram for chart::PieChart::PieLabelInfo:

[legend]

Public Member Functions
	PieLabelInfo ()

bool	moveAwayFrom (const PieLabelInfo *pFix, const css::awt::Size &rPageSize, bool bMoveHalfWay, bool bMoveClockwise)
	In case this label and the passed label overlap the routine moves this label in order to fix the issue. More...

Public Attributes
rtl::Reference< SvxShapeText >	xTextShape

rtl::Reference< SvxShapeGroupAnyD >	xLabelGroupShape

::basegfx::B2IVector	aFirstPosition

::basegfx::B2IVector	aOuterPosition

::basegfx::B2IVector	aOrigin

double	fValue

bool	bMovementAllowed

bool	bMoved

bool	bShowLeaderLine

rtl::Reference< SvxShapeGroupAnyD >	xTextTarget

PieLabelInfo *	pPrevious

PieLabelInfo *	pNext

css::awt::Point	aPreviousPosition

Detailed Description

Definition at line 118 of file PieChart.hxx.

Constructor & Destructor Documentation

◆ PieLabelInfo()

chart::PieChart::PieLabelInfo::PieLabelInfo ( )

Definition at line 914 of file PieChart.cxx.

Member Function Documentation

◆ moveAwayFrom()

bool chart::PieChart::PieLabelInfo::moveAwayFrom	(	const PieLabelInfo *	pFix,
		const css::awt::Size &	rPageSize,
		bool	bMoveHalfWay,
		bool	bMoveClockwise
	)

In case this label and the passed label overlap the routine moves this label in order to fix the issue.

After the label position has been rearranged it is checked that the moved label is still inside the page document, if the test is positive the routine returns true else returns false.

compute the rectangle representing the intersection of the label bounding boxes (aOverlap).

the label is shifted along the direction orthogonal to the vector starting at the pie/donut center and ending at this label anchor point;

named aTangentialDirection the unit vector related to such a direction, the magnitude of the shift along such a direction is calculated in this way: if the horizontal component of aTangentialDirection is greater than the vertical component, the magnitude of the shift is equal to aOverlap.Width else to aOverlap.Height;

the magnitude of the shift is also increased by 1/50-th of the width or the height of the document page;

in case the bMoveHalfWay parameter is true the magnitude of the shift is halved.

in case the bMoveClockwise parameter is false the direction of aTangentialDirection is reversed;

a final check is performed in order to be sure that the moved label is still inside the page document;

note that no further test is performed in order to check that the overlap is really fixed: this result is surely achieved if the shift would occur in the horizontal or vertical direction (since, in such a direction, the magnitude of the shift would be greater than the length of the overlap), but in general this is not true; adding a constant term equal to 1/50-th of the width or the height of the document page increases the probability of success, anyway it is worth noting that the method can return true even if the overlap issue is not (completely) fixed;

Definition at line 928 of file PieChart.cxx.

References abs(), basegfx::Range2D< typename TYPE, typename TRAITS >::getHeight(), basegfx::Range2D< typename TYPE, typename TRAITS >::getWidth(), basegfx::Tuple2D< typename TYPE >::getX(), basegfx::Tuple2D< typename TYPE >::getY(), basegfx::Range2D< typename TYPE, typename TRAITS >::intersect(), basegfx::Range2D< typename TYPE, typename TRAITS >::isEmpty(), basegfx::B2IVector::setLength(), and xLabelGroupShape.

Referenced by chart::PieChart::tryMoveLabels().