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Fragment Class Reference
(QPainter::Fragment)
[QtGui module]

This class is used in conjunction with the QPainter::drawPixmapFragments() function to specify how a pixmap, or sub-rect of a pixmap, is drawn. More...

 #include <QPainter>

This class was introduced in Qt 4.7.


Public Variables

qreal height
qreal opacity
qreal rotation
qreal scaleX
qreal scaleY
qreal sourceLeft
qreal sourceTop
qreal width
qreal x
qreal y

Static Public Members

Fragment create ( const QPointF & pos, const QRectF & sourceRect, qreal scaleX = 1, qreal scaleY = 1, qreal rotation = 0, qreal opacity = 1 )

Detailed Description

This class is used in conjunction with the QPainter::drawPixmapFragments() function to specify how a pixmap, or sub-rect of a pixmap, is drawn.

The sourceLeft, sourceTop, width and height variables are used as a source rectangle within the pixmap passed into the QPainter::drawPixmapFragments() function. The variables x, y, width and height are used to calculate the target rectangle that is drawn. x and y denotes the center of the target rectangle. The width and heigth in the target rectangle is scaled by the scaleX and scaleY values. The resulting target rectangle is then rotated rotation degrees around the x, y center point.

See also QPainter::drawPixmapFragments().


Member Function Documentation

Fragment Fragment::create ( const QPointF & pos, const QRectF & sourceRect, qreal scaleX = 1, qreal scaleY = 1, qreal rotation = 0, qreal opacity = 1 )   [static]

This is a convenience function that returns a QPainter::Fragment that is initialized with the pos, sourceRect, scaleX, scaleY, rotation, opacity parameters.

This function was introduced in Qt 4.7.


Member Variable Documentation

qreal Fragment::height

This variable holds the height of the source rectangle and is used to calculate the height of the target rectangle.

qreal Fragment::opacity

This variable holds the opacity of the target rectangle, where 0.0 is fully transparent and 1.0 is fully opaque.

qreal Fragment::rotation

This variable holds the rotation of the target rectangle in degrees. The target rectangle is rotated after it has been scaled.

qreal Fragment::scaleX

This variable holds the horizontal scale of the target rectangle.

qreal Fragment::scaleY

This variable holds the vertical scale of the target rectangle.

qreal Fragment::sourceLeft

This variable holds the left coordinate of the source rectangle.

qreal Fragment::sourceTop

This variable holds the top coordinate of the source rectangle.

qreal Fragment::width

This variable holds the width of the source rectangle and is used to calculate the width of the target rectangle.

qreal Fragment::x

This variable holds the x coordinate of center point in the target rectangle.

qreal Fragment::y

This variable holds the y coordinate of the center point in the target rectangle.


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Qt 4.7.0