QgsTextDiagram Class Reference

#include <qgstextdiagram.h>

Inheritance diagram for QgsTextDiagram:

Collaboration diagram for QgsTextDiagram:

List of all members.

Public Types
enum	Orientation { Horizontal = 0, Vertical }
enum	Shape { Circle = 0, Rectangle, Triangle }
Public Member Functions
	QgsTextDiagram ()
	~QgsTextDiagram ()
QString	diagramName () const
QSizeF	diagramSize (const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s)
	Returns the size in map units the diagram will use to render.
QSizeF	diagramSize (const QgsAttributes &attributes, const QgsRenderContext &c, const QgsDiagramSettings &s, const QgsDiagramInterpolationSettings &is)
	Returns the size in map units the diagram will use to render.
void	renderDiagram (const QgsAttributes &att, QgsRenderContext &c, const QgsDiagramSettings &s, const QPointF &position)
	Draws the diagram at the given position (in pixel coordinates)
Private Member Functions
void	lineEllipseIntersection (const QPointF &lineStart, const QPointF &lineEnd, const QPointF &ellipseMid, double r1, double r2, QList< QPointF > &result) const
	Calculates intersection points between a line and an ellipse.
Private Attributes
QBrush	mBrush
Orientation	mOrientation
QPen	mPen
Shape	mShape

---

Detailed Description

Definition at line 33 of file qgstextdiagram.h.

---

Member Enumeration Documentation

enum QgsTextDiagram::Orientation

Enumerator:

Horizontal
Vertical

Definition at line 43 of file qgstextdiagram.h.

enum QgsTextDiagram::Shape

Enumerator:

Circle
Rectangle
Triangle

Definition at line 36 of file qgstextdiagram.h.

---

Constructor & Destructor Documentation

QgsTextDiagram::QgsTextDiagram

(

)

Definition at line 21 of file qgstextdiagram.cpp.

References mBrush, and mPen.

QgsTextDiagram::~QgsTextDiagram

(

)

Definition at line 29 of file qgstextdiagram.cpp.

---

Member Function Documentation

QString QgsTextDiagram::diagramName

(

)

const [inline, virtual]

Implements QgsDiagram.

Definition at line 55 of file qgstextdiagram.h.

References DIAGRAM_NAME_TEXT.

QSizeF QgsTextDiagram::diagramSize	(	const QgsAttributes &	attributes,
		const QgsRenderContext &	c,
		const QgsDiagramSettings &	s
	)		[virtual]

Returns the size in map units the diagram will use to render.

Implements QgsDiagram.

Definition at line 79 of file qgstextdiagram.cpp.

References QgsDiagramSettings::size.

QSizeF QgsTextDiagram::diagramSize	(	const QgsAttributes &	attributes,
		const QgsRenderContext &	c,
		const QgsDiagramSettings &	s,
		const QgsDiagramInterpolationSettings &	is
	)		[virtual]

Returns the size in map units the diagram will use to render.

Interpolate size

Implements QgsDiagram.

Definition at line 33 of file qgstextdiagram.cpp.

References QgsDiagramInterpolationSettings::classificationAttribute, QgsDiagramInterpolationSettings::lowerSize, QgsDiagramInterpolationSettings::lowerValue, QgsDiagramSettings::minimumSize, QgsDiagramSettings::scaleByArea, size, QgsDiagramInterpolationSettings::upperSize, and QgsDiagramInterpolationSettings::upperValue.

void QgsTextDiagram::lineEllipseIntersection	(	const QPointF &	lineStart,
		const QPointF &	lineEnd,
		const QPointF &	ellipseMid,
		double	r1,
		double	r2,
		QList< QPointF > &	result
	)		const [private]

Calculates intersection points between a line and an ellipse.

Returns:

intersection points

Definition at line 239 of file qgstextdiagram.cpp.

Referenced by renderDiagram().

void QgsTextDiagram::renderDiagram	(	const QgsAttributes &	att,
		QgsRenderContext &	c,
		const QgsDiagramSettings &	s,
		const QPointF &	position
	)		[virtual]

Draws the diagram at the given position (in pixel coordinates)

Implements QgsDiagram.

Definition at line 87 of file qgstextdiagram.cpp.

References QgsDiagramSettings::backgroundColor, QgsDiagramSettings::categoryColors, QgsDiagramSettings::categoryIndices, Circle, QgsDiagramSettings::Height, Horizontal, QgsDiagramSettings::labelPlacementMethod, lineEllipseIntersection(), QgsDiagramSettings::maxScaleDenominator, mBrush, QgsDiagramSettings::minScaleDenominator, mOrientation, mPen, mShape, QgsRenderContext::painter(), QgsDiagramSettings::penColor, Rectangle, QgsRenderContext::rendererScale(), QgsDiagram::scaledFont(), QgsDiagram::setPenWidth(), QgsDiagramSettings::size, QgsDiagram::sizePainterUnits(), and QgsDiagramSettings::XHeight.

---

Member Data Documentation

QBrush QgsTextDiagram::mBrush [private]

Definition at line 60 of file qgstextdiagram.h.

Referenced by QgsTextDiagram(), and renderDiagram().

Orientation QgsTextDiagram::mOrientation [private]

Definition at line 58 of file qgstextdiagram.h.

Referenced by renderDiagram().

QPen QgsTextDiagram::mPen [private]

Definition at line 61 of file qgstextdiagram.h.

Referenced by QgsTextDiagram(), and renderDiagram().

Shape QgsTextDiagram::mShape [private]

Definition at line 59 of file qgstextdiagram.h.

Referenced by renderDiagram().

---

The documentation for this class was generated from the following files:

• src/core/diagram/qgstextdiagram.h
• src/core/diagram/qgstextdiagram.cpp