Referencia de la Clase QCanvasRectangle

The QCanvasRectangle class provides a rectangle on a QCanvas.canvasThis item paints a single rectangle which may have any pen() and brush(), but may not be tilted/rotated. For rotated rectangles, use QCanvasPolygon. Más...

#include <qcanvas.h>

Diagrama de herencias de QCanvasRectangle

Lista de todos los miembros.

Métodos públicos
	QCanvasRectangle (QCanvas *canvas)
	QCanvasRectangle (const QRect &, QCanvas *canvas)
	QCanvasRectangle (int x, int y, int width, int height, QCanvas *canvas)
	~QCanvasRectangle ()
int	width () const
int	height () const
void	setSize (int w, int h)
QSize	size () const
QPointArray	areaPoints () const
QRect	rect () const
bool	collidesWith (const QCanvasItem *) const
int	rtti () const
	QCanvasRectangle (QCanvas *canvas)
	QCanvasRectangle (const QRect &, QCanvas *canvas)
	QCanvasRectangle (int x, int y, int width, int height, QCanvas *canvas)
	~QCanvasRectangle ()
int	width () const
int	height () const
void	setSize (int w, int h)
QSize	size () const
QPointArray	areaPoints () const
QRect	rect () const
bool	collidesWith (const QCanvasItem *) const
int	rtti () const
Atributos públicos estáticos
static int	RTTI = Rtti_Rectangle
Métodos protegidos
void	drawShape (QPainter &)
QPointArray	chunks () const
void	drawShape (QPainter &)
QPointArray	chunks () const

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Descripción detallada

The QCanvasRectangle class provides a rectangle on a QCanvas.

canvas

This item paints a single rectangle which may have any pen() and brush(), but may not be tilted/rotated. For rotated rectangles, use QCanvasPolygon.

The rectangle's size and initial position can be set in the constructor. The size can be set or changed later using setSize(). Use height() and width() to retrieve the rectangle's dimensions.

The rectangle can be drawn on a painter with drawShape().

Like any other canvas item rectangles can be moved with QCanvasItem::move() and QCanvasItem::moveBy(), or by setting coordinates with QCanvasItem::setX(), QCanvasItem::setY() and QCanvasItem::setZ().

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Documentación del constructor y destructor

QCanvasRectangle::QCanvasRectangle

(

QCanvas *

canvas

)

Constructs a rectangle at position (0,0) with both width and height set to 32 pixels on canvas.

QCanvasRectangle::QCanvasRectangle	(	const QRect &	r,
		QCanvas *	canvas
	)

Constructs a rectangle positioned and sized by r on canvas.

QCanvasRectangle::QCanvasRectangle	(	int	x,
		int	y,
		int	width,
		int	height,
		QCanvas *	canvas
	)

Constructs a rectangle at position (x, y) and size width by height, on canvas.

QCanvasRectangle::~QCanvasRectangle

(

)

Destroys the rectangle.

QCanvasRectangle::QCanvasRectangle

(

QCanvas *

canvas

)

QCanvasRectangle::QCanvasRectangle	(	const QRect &	,
		QCanvas *	canvas
	)

QCanvasRectangle::QCanvasRectangle	(	int	x,
		int	y,
		int	width,
		int	height,
		QCanvas *	canvas
	)

QCanvasRectangle::~QCanvasRectangle

(

)

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Documentación de las funciones miembro

QPointArray QCanvasRectangle::areaPoints

(

)

const [virtual]

Implementa QCanvasPolygonalItem.

QPointArray QCanvasRectangle::areaPoints

(

)

const [virtual]

This function must be reimplemented by subclasses. It must return the points bounding (i.e. outside and not touching) the shape or drawing errors will occur.

Implementa QCanvasPolygonalItem.

QPointArray QCanvasRectangle::chunks

(

)

const [protected, virtual]

Simply calls QCanvasItem::chunks().

Reimplementado de QCanvasPolygonalItem.

QPointArray QCanvasRectangle::chunks

(

)

const [protected, virtual]

Reimplementado de QCanvasPolygonalItem.

bool QCanvasRectangle::collidesWith

(

const QCanvasItem *

i

)

const [virtual]

Reimplementado de QCanvasPolygonalItem.

bool QCanvasRectangle::collidesWith

(

const QCanvasItem *

i

)

const [virtual]

Reimplementado de QCanvasPolygonalItem.

void QCanvasRectangle::drawShape

(

QPainter &

p

)

[protected, virtual]

Subclasses must reimplement this function to draw their shape. The pen and brush of p are already set to pen() and brush() prior to calling this function.

Atención:

When you reimplement this function, make sure that you leave the painter in the same state as you found it. For example, if you start by calling QPainter::translate(50, 50), end your code by calling QPainter::translate(-50, -50). Be also aware that the painter might already have some transformations set (i.e., don't call QPainter::resetXForm() when you're done).

Ver también:

draw()

Implementa QCanvasPolygonalItem.

void QCanvasRectangle::drawShape

(

QPainter &

p

)

[protected, virtual]

Draws the rectangle on painter p.

Implementa QCanvasPolygonalItem.

int QCanvasRectangle::height

(

)

const

Returns the height of the rectangle.

int QCanvasRectangle::height

(

)

const

QRect QCanvasRectangle::rect

(

)

const [inline]

QRect QCanvasRectangle::rect

(

)

const [inline]

Returns the integer-converted x(), y() position and size() of the rectangle as a QRect.

int QCanvasRectangle::rtti

(

)

const [virtual]

Returns 2 (QCanvasItem::Rtti_PolygonalItem).

Ver también:

QCanvasItem::rtti()

Reimplementado de QCanvasPolygonalItem.

int QCanvasRectangle::rtti

(

)

const [virtual]

Returns 5 (QCanvasItem::Rtti_Rectangle).

Ver también:

QCanvasItem::rtti()

Reimplementado de QCanvasPolygonalItem.

void QCanvasRectangle::setSize	(	int	w,
		int	h
	)

void QCanvasRectangle::setSize	(	int	width,
		int	height
	)

Sets the width and height of the rectangle.

QSize QCanvasRectangle::size

(

)

const [inline]

QSize QCanvasRectangle::size

(

)

const [inline]

Returns the width() and height() of the rectangle.

Ver también:

rect(), setSize()

int QCanvasRectangle::width

(

)

const

Returns the width of the rectangle.

int QCanvasRectangle::width

(

)

const

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Documentación de los datos miembro

static int QCanvasRectangle::RTTI = Rtti_Rectangle [static]

Reimplementado de QCanvasPolygonalItem.

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La documentación para esta clase fue generada a partir de los siguientes ficheros:

• src/qt/include/qcanvas.h
• src/qt/src/canvas/qcanvas.h
• src/qt/src/canvas/qcanvas.cpp