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QGraphicsSvgItem

Synopsis

Functions

Detailed Description

The PySide.QtSvg.QGraphicsSvgItem class is a PySide.QtGui.QGraphicsItem that can be used to render the contents of SVG files.

PySide.QtSvg.QGraphicsSvgItem provides a way of rendering SVG files onto PySide.QtGui.QGraphicsView . PySide.QtSvg.QGraphicsSvgItem can be created by passing the SVG file to be rendered to its constructor or by explicit setting a shared PySide.QtSvg.QSvgRenderer on it.

Note that setting PySide.QtSvg.QSvgRenderer on a PySide.QtSvg.QGraphicsSvgItem doesn’t make the item take ownership of the renderer, therefore if using PySide.QtSvg.QGraphicsSvgItem.setSharedRenderer() method one has to make sure that the lifetime of the PySide.QtSvg.QSvgRenderer object will be at least as long as that of the PySide.QtSvg.QGraphicsSvgItem .

PySide.QtSvg.QGraphicsSvgItem provides a way of rendering only parts of the SVG files via the setElementId. If PySide.QtSvg.QGraphicsSvgItem.setElementId() method is called, only the SVG element (and its children) with the passed id will be renderer. This provides a convenient way of selectively rendering large SVG files that contain a number of discrete elements. For example the following code renders only jokers from a SVG file containing a whole card deck:

renderer = QSvgRenderer(QLatin1String("SvgCardDeck.svg"))
black = QGraphicsSvgItem()
red   = QGraphicsSvgItem()

black.setSharedRenderer(renderer)
black.setElementId(QLatin1String("black_joker"))

red.setSharedRenderer(renderer)
red.setElementId(QLatin1String("red_joker"))

Size of the item can be set via the PySide.QtCore.QRectF.setSize() method of the bounding rectangle or via direct manipulation of the items transformation matrix.

By default the SVG rendering is cached using QGraphicsItem.DeviceCoordinateCache mode to speedup the display of items. Caching can be disabled by passing QGraphicsItem.NoCache to the QGraphicsItem.setCacheMode() method.

See also

PySide.QtSvg.QSvgWidget QtSvg Module PySide.QtGui.QGraphicsItem PySide.QtGui.QGraphicsView

class PySide.QtSvg.QGraphicsSvgItem([parentItem=None])
class PySide.QtSvg.QGraphicsSvgItem(fileName[, parentItem=None])
Parameters:

Constructs a new SVG item with the given parent .

Constructs a new item with the given parent and loads the contents of the SVG file with the specified fileName .

PySide.QtSvg.QGraphicsSvgItem.elementId()
Return type:unicode

This property holds the element’s XML ID.

PySide.QtSvg.QGraphicsSvgItem.isCachingEnabled()
Return type:PySide.QtCore.bool

Use QGraphicsItem.cacheMode() instead.

PySide.QtSvg.QGraphicsSvgItem.maximumCacheSize()
Return type:PySide.QtCore.QSize

This property holds the maximum size of the device coordinate cache for this item.

PySide.QtSvg.QGraphicsSvgItem.renderer()
Return type:PySide.QtSvg.QSvgRenderer

Returns the currently use PySide.QtSvg.QSvgRenderer .

PySide.QtSvg.QGraphicsSvgItem.setCachingEnabled(arg__1)
Parameters:arg__1 – PySide.QtCore.bool

Use QGraphicsItem.setCacheMode() instead. Passing true to this function is equivalent to QGraphicsItem::setCacheMode( QGraphicsItem.DeviceCoordinateCache ).

See also

PySide.QtSvg.QGraphicsSvgItem.isCachingEnabled()

PySide.QtSvg.QGraphicsSvgItem.setElementId(id)
Parameters:id – unicode

This property holds the element’s XML ID.

PySide.QtSvg.QGraphicsSvgItem.setMaximumCacheSize(size)
Parameters:size – PySide.QtCore.QSize

This property holds the maximum size of the device coordinate cache for this item.

PySide.QtSvg.QGraphicsSvgItem.setSharedRenderer(renderer)
Parameters:renderer – PySide.QtSvg.QSvgRenderer

Sets renderer to be a shared PySide.QtSvg.QSvgRenderer on the item. By using this method one can share the same PySide.QtSvg.QSvgRenderer on a number of items. This means that the SVG file will be parsed only once. PySide.QtSvg.QSvgRenderer passed to this method has to exist for as long as this item is used.

Indt Openbossa Qt Python