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KHEUI::ColumnRenderer Class Reference

#include <columnrenderer.h>

Inheritance diagram for KHEUI::ColumnRenderer:

[legend]

List of all members.

---

Detailed Description

base class for columns of the ColumnsView

Author:

Friedrich W. H. Kossebau

Definition at line 48 of file columnrenderer.h.

Public Member Functions
	ColumnRenderer (ColumnsView *columnsView)
ColumnsView *	columnsView () const
bool	isVisible () const
KPixelY	lineHeight () const
bool	overlaps (const KPixelXs &Xs) const
virtual void	renderEmptyColumn (QPainter *painter, const KPixelXs &Xs, const KPixelYs &Ys)
virtual void	renderFirstLine (QPainter *painter, const KPixelXs &Xs, int firstLineIndex)
virtual void	renderNextLine (QPainter *painter)
KPixelX	rightX () const
void	setLineHeight (KPixelY lineHeight)
void	setVisible (bool visible)
void	setX (KPixelX newX)
KPixelX	visibleWidth () const
KPixelX	width () const
KPixelX	x () const
virtual	~ColumnRenderer ()
Protected Member Functions
void	renderBlankLine (QPainter *painter) const
void	restrictToXSpan (KPixelXs *Xs) const
void	setWidth (KPixelX width)

---

Constructor & Destructor Documentation

KHEUI::ColumnRenderer::ColumnRenderer

(

ColumnsView *

columnsView

)

[explicit]

Definition at line 84 of file columnrenderer.cpp.

KHEUI::ColumnRenderer::~ColumnRenderer

(

)

[virtual]

Definition at line 132 of file columnrenderer.cpp.

---

Member Function Documentation

ColumnsView * KHEUI::ColumnRenderer::columnsView

(

)

const

Definition at line 90 of file columnrenderer.cpp.

bool KHEUI::ColumnRenderer::isVisible

(

)

const

should Column be displayed?

Definition at line 95 of file columnrenderer.cpp.

KPixelY KHEUI::ColumnRenderer::lineHeight

(

)

const

Definition at line 97 of file columnrenderer.cpp.

bool KHEUI::ColumnRenderer::overlaps

(

const KPixelXs &

Xs

)

const

true if column overlaps with pixels between x-positions x1, x2

Definition at line 106 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::renderBlankLine

(

QPainter *

painter

)

const [protected]

Definition at line 121 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::renderEmptyColumn	(	QPainter *	painter,
		const KPixelXs &	Xs,
		const KPixelYs &	Ys
	)			[virtual]

Reimplemented in KHEUI::BorderColumnRenderer, and KHEUI::OffsetColumnRenderer.

Definition at line 127 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::renderFirstLine	(	QPainter *	painter,
		const KPixelXs &	Xs,
		int	firstLineIndex
	)			[virtual]

Before an update of the columns view each column that intersects with the area to be painted will be called with this function.

As often multiple lines of a column are affected for each lines the same values (like first and last char positions) might be calculated. This function enables a one-time-calculation for such data that must be stored in some class members, though.

Parameters:

	painter	painter variable
	cx
	cw
	firstLineIndex	no of the first of the range of lines to paint

Reimplemented in KHEUI::AbstractByteArrayColumnRenderer, KHEUI::BorderColumnRenderer, and KHEUI::OffsetColumnRenderer.

Definition at line 109 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::renderNextLine

(

QPainter *

painter

)

[virtual]

the actual painting call for a column's line.

The default implementation simply paints the background

Reimplemented in KHEUI::AbstractByteArrayColumnRenderer, KHEUI::BorderColumnRenderer, and KHEUI::OffsetColumnRenderer.

Definition at line 116 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::restrictToXSpan

(

KPixelXs *

Xs

)

const [protected]

Definition at line 104 of file columnrenderer.cpp.

KPixelX KHEUI::ColumnRenderer::rightX

(

)

const

right offset x in pixel

Definition at line 93 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::setLineHeight

(

KPixelY

lineHeight

)

buffer actual line height in column

Definition at line 102 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::setVisible

(

bool

visible

)

sets visibily

Definition at line 101 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::setWidth

(

KPixelX

width

)

[protected]

sets width of the column

Definition at line 100 of file columnrenderer.cpp.

void KHEUI::ColumnRenderer::setX

(

KPixelX

newX

)

sets starting point of the column

Definition at line 99 of file columnrenderer.cpp.

KPixelX KHEUI::ColumnRenderer::visibleWidth

(

)

const

convenience: returns width if visible else 0

Definition at line 96 of file columnrenderer.cpp.

KPixelX KHEUI::ColumnRenderer::width

(

)

const

total width in pixel

Definition at line 94 of file columnrenderer.cpp.

KPixelX KHEUI::ColumnRenderer::x

(

)

const

left offset x in pixel

Definition at line 92 of file columnrenderer.cpp.

---

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

• columnrenderer.h
• columnrenderer.cpp

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