The KPainter class is used to paint on a widget. More...

#include <kpainter.h>

Inheritance diagram for KPainter:

Collaboration diagram for KPainter:

Public Member Functions
void	BitBlt (const QRect &rect, const QPixmap &pSrcDC, int xSrc, int ySrc)
	Draws a bitmap at the specified coordinates.

void	BitBlt (int x, int y, int nWidth, int nHeight, const QPixmap &pSrcDC, int xSrc, int ySrc)
	Draws a bitmap at the specified coordinates.

void	Chord (int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)

void	Ellipse (const KRect &rect)
	Draws an ellipse using the current pen and fills it using the current brush.

void	Ellipse (int x1, int y1, int x2, int y2)
	Draws an ellipse using the current pen and fills it using the current brush.

void	FillRect (const KRect &rect, const KBrush &brush)
	Fills a given rectangle by using a specific brush.

KSize	GetTextExtent (const KString &str) const
	Computes the width and height of a line of text based on the current font.

void	IntersectClipRect (const KRect &rect)
	Enables clipping, and sets the clip region to the given rectangle.

void	IntersectClipRect (int x1, int y1, int x2, int y2)
	Enables clipping, and sets the clip region to the given rectangle.

template<typename T >
	KPainter (KWidgetBase< T > *widget)
	Construct a new KPainter object based on a KWidget or KDialog.

void	LineTo (int x, int y)
	Draws a line from the current position up to, but not including, a point.

void	MoveTo (int x, int y)
	Moves the current position.

void	Pie (int x1, int y1, int x2, int y2, int x3, int y3, int x4, int y4)
	Draws a pie-shaped wedge.

void	PolyBezier (const KPoint *points, int pointCount)
	Draws one or more Bzier splines. The current position isn't used or updated.

void	Polygon (const KPoint *points, int pointCount)
	Draws a polygon consisting of two or more points (vertices) connected by lines.

void	Rectangle (const KRect &rect)
	Draws a rectangle using the current pen and fills it using the current brush.

void	Rectangle (int x1, int y1, int x2, int y2)
	Draws a rectangle using the current pen and fills it using the current brush.

void	RoundRect (const KRect &rect, int ellipseWidth, int ellipseHeight)
	Draws a rounded rectangle using the current pen and fills it using the current brush.

void	RoundRect (int x1, int y1, int x2, int y2, int ellipseWidth, int ellipseHeight)
	Draws a rounded rectangle using the current pen and fills it using the current brush.

void	SelectClipRgn (QRegion *region)
	Sets the clipping region to be used for drawing.

KBrush	SelectObject (const KBrush &brush)
	Sets the brush to be used for drawing.

KFont	SelectObject (const KFont &font)
	Sets the font to be used for drawing.

KPen	SelectObject (const KPen &pen)
	Sets the pen to be used for drawing.

QColor	SetBkColor (const QColor &color)
	Sets the background color to be used for drawing (ie the brush color)

QColor	SetTextColor (const QColor &color)
	Sets the text color to be used for drawing (ie the pen color)

void	TextOut (int x, int y, const KString &text)
	Writes a character string at a specified location using the currently selected font.

void	TextOut (int x, int y, const KString &text, int nCount)
	Writes a character string at a specified location using the currently selected font.

Detailed Description

The KPainter class is used to paint on a widget.

This class can replace CDC or CPaintDC with the same API, and can be used in the same way as QPainter (it's inheriting QPainter).

See also: https://learn.microsoft.com/en-us/cpp/mfc/reference/cdc-class; https://learn.microsoft.com/en-us/cpp/mfc/reference/cpaintdc-class

Constructor & Destructor Documentation

◆ KPainter()

template<typename T >

KPainter::KPainter ( KWidgetBase< T > * widget )

inline

Construct a new KPainter object based on a KWidget or KDialog.

If the widget has a scroll area (using the VScroll or HScroll flag), the painter will be based on the viewport of the scroll area, not on the widget itself.

Member Function Documentation

◆ BitBlt() [1/2]

void KPainter::BitBlt	(	const QRect &	rect,
		const QPixmap &	pSrcDC,
		int	xSrc,
		int	ySrc )

Draws a bitmap at the specified coordinates.

◆ BitBlt() [2/2]

void KPainter::BitBlt	(	int	x,
		int	y,
		int	nWidth,
		int	nHeight,
		const QPixmap &	pSrcDC,
		int	xSrc,
		int	ySrc )

Draws a bitmap at the specified coordinates.

◆ Chord()

void KPainter::Chord	(	int	x1,
		int	y1,
		int	x2,
		int	y2,
		int	x3,
		int	y3,
		int	x4,
		int	y4 )

◆ Ellipse() [1/2]

void KPainter::Ellipse ( const KRect & rect )

Draws an ellipse using the current pen and fills it using the current brush.

◆ Ellipse() [2/2]

void KPainter::Ellipse	(	int	x1,
		int	y1,
		int	x2,
		int	y2 )

Draws an ellipse using the current pen and fills it using the current brush.

◆ FillRect()

void KPainter::FillRect	(	const KRect &	rect,
		const KBrush &	brush )

Fills a given rectangle by using a specific brush.

◆ GetTextExtent()

KSize KPainter::GetTextExtent ( const KString & str ) const

Computes the width and height of a line of text based on the current font.

◆ IntersectClipRect() [1/2]

void KPainter::IntersectClipRect ( const KRect & rect )

Enables clipping, and sets the clip region to the given rectangle.

If clipping is already enabled, the new clip region is the intersection of the current clip region and the rectangle.

◆ IntersectClipRect() [2/2]

void KPainter::IntersectClipRect	(	int	x1,
		int	y1,
		int	x2,
		int	y2 )

Enables clipping, and sets the clip region to the given rectangle.

If clipping is already enabled, the new clip region is the intersection of the current clip region and the rectangle.

◆ LineTo()

void KPainter::LineTo	(	int	x,
		int	y )

Draws a line from the current position up to, but not including, a point.

◆ MoveTo()

void KPainter::MoveTo	(	int	x,
		int	y )

Moves the current position.

◆ Pie()

void KPainter::Pie	(	int	x1,
		int	y1,
		int	x2,
		int	y2,
		int	x3,
		int	y3,
		int	x4,
		int	y4 )

Draws a pie-shaped wedge.

◆ PolyBezier()

void KPainter::PolyBezier	(	const KPoint *	points,
		int	pointCount )

Draws one or more Bzier splines. The current position isn't used or updated.

◆ Polygon()

void KPainter::Polygon	(	const KPoint *	points,
		int	pointCount )

Draws a polygon consisting of two or more points (vertices) connected by lines.

◆ Rectangle() [1/2]

void KPainter::Rectangle ( const KRect & rect )

Draws a rectangle using the current pen and fills it using the current brush.

◆ Rectangle() [2/2]

void KPainter::Rectangle	(	int	x1,
		int	y1,
		int	x2,
		int	y2 )

Draws a rectangle using the current pen and fills it using the current brush.

◆ RoundRect() [1/2]

void KPainter::RoundRect	(	const KRect &	rect,
		int	ellipseWidth,
		int	ellipseHeight )

Draws a rounded rectangle using the current pen and fills it using the current brush.

◆ RoundRect() [2/2]

void KPainter::RoundRect	(	int	x1,
		int	y1,
		int	x2,
		int	y2,
		int	ellipseWidth,
		int	ellipseHeight )

Draws a rounded rectangle using the current pen and fills it using the current brush.

◆ SelectClipRgn()

void KPainter::SelectClipRgn ( QRegion * region )

Sets the clipping region to be used for drawing.

If the region is null, the clipping is diasabled.

◆ SelectObject() [1/3]

KBrush KPainter::SelectObject ( const KBrush & brush )

Sets the brush to be used for drawing.

Returns: The old brush

◆ SelectObject() [2/3]

KFont KPainter::SelectObject ( const KFont & font )

Sets the font to be used for drawing.

Returns: The old font

◆ SelectObject() [3/3]

KPen KPainter::SelectObject ( const KPen & pen )

Sets the pen to be used for drawing.

Returns: The old pen

◆ SetBkColor()

QColor KPainter::SetBkColor ( const QColor & color )

Sets the background color to be used for drawing (ie the brush color)

Returns: The old background color

◆ SetTextColor()

QColor KPainter::SetTextColor ( const QColor & color )

Sets the text color to be used for drawing (ie the pen color)

Returns: The old text color

◆ TextOut() [1/2]

void KPainter::TextOut	(	int	x,
		int	y,
		const KString &	text )

Writes a character string at a specified location using the currently selected font.

◆ TextOut() [2/2]

void KPainter::TextOut	(	int	x,
		int	y,
		const KString &	text,
		int	nCount )