Improve the Plasma::Svg apidocs
This commit is contained in:
Alex Merry
parent
faa9bd1eb2
commit
21ed067ba8
227
svg.h
227
svg.h
@ -64,8 +64,9 @@ class PLASMA_EXPORT Svg : public QObject
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public:
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public:
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/**
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/**
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* Constructs an SVG object that implicitly shares and caches rendering
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* Constructs an SVG object that implicitly shares and caches rendering.
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* As opposed to QSvgRenderer, which this class uses internally,
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*
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* Unlike QSvgRenderer, which this class uses internally,
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* Plasma::Svg represents an image generated from an SVG. As such, it
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* Plasma::Svg represents an image generated from an SVG. As such, it
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* has a related size and transform matrix (the latter being provided
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* has a related size and transform matrix (the latter being provided
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* by the painter used to paint the image).
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* by the painter used to paint the image).
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@ -82,149 +83,233 @@ class PLASMA_EXPORT Svg : public QObject
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/**
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/**
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* Returns a pixmap of the SVG represented by this object.
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* Returns a pixmap of the SVG represented by this object.
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*
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*
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* @arg elelementId the ID string of the element to render, or an empty
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* The size of the pixmap will be the size of this Svg object (size())
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* string for the whole SVG (the default)
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* if containsMultipleImages is @c true; otherwise, it will be the
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* size of the requested element after the whole SVG has been scaled
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* to size().
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*
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* @arg elementId the ID string of the element to render, or an empty
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* string for the whole SVG (the default)
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* @return a QPixmap of the rendered SVG
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* @return a QPixmap of the rendered SVG
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*/
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*/
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Q_INVOKABLE QPixmap pixmap(const QString &elementID = QString());
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Q_INVOKABLE QPixmap pixmap(const QString &elementID = QString());
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/**
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/**
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* Paints the SVG represented by this object
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* Paints all or part of the SVG represented by this object
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* @arg painter the QPainter to use
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*
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* @arg point the position to start drawing; the entire svg will be
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* The size of the painted area will be the size of this Svg object
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* drawn starting at this point.
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* (size()) if containsMultipleImages is @c true; otherwise, it will
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* @arg elelementId the ID string of the element to render, or an empty
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* be the size of the requested element after the whole SVG has been
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* string for the whole SVG (the default)
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* scaled to size().
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*
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* @arg painter the QPainter to use
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* @arg point the position to start drawing; the entire svg will be
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* drawn starting at this point.
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* @arg elementId the ID string of the element to render, or an empty
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* string for the whole SVG (the default)
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*/
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*/
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Q_INVOKABLE void paint(QPainter *painter, const QPointF &point,
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Q_INVOKABLE void paint(QPainter *painter, const QPointF &point,
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const QString &elementID = QString());
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const QString &elementID = QString());
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/**
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/**
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* Paints the SVG represented by this object
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* Paints all or part of the SVG represented by this object
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* @arg painter the QPainter to use
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*
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* @arg x the horizontal coordinate to start painting from
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* The size of the painted area will be the size of this Svg object
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* @arg y the vertical coordinate to start painting from
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* (size()) if containsMultipleImages is @c true; otherwise, it will
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* @arg elelementId the ID string of the element to render, or an empty
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* be the size of the requested element after the whole SVG has been
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* string for the whole SVG (the default)
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* scaled to size().
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*
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* @arg painter the QPainter to use
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* @arg x the horizontal coordinate to start painting from
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* @arg y the vertical coordinate to start painting from
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* @arg elementId the ID string of the element to render, or an empty
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* string for the whole SVG (the default)
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*/
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*/
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Q_INVOKABLE void paint(QPainter *painter, int x, int y,
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Q_INVOKABLE void paint(QPainter *painter, int x, int y,
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const QString &elementID = QString());
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const QString &elementID = QString());
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/**
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/**
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* Paints the SVG represented by this object
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* Paints all or part of the SVG represented by this object
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* @arg painter the QPainter to use
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*
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* @arg rect the rect to draw into; if smaller than the current size
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* @arg painter the QPainter to use
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* the drawing is starting at this point.
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* @arg rect the rect to draw into; if smaller than the current size
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* @arg elelementId the ID string of the element to render, or an empty
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* the drawing is starting at this point.
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* string for the whole SVG (the default)
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* @arg elementId the ID string of the element to render, or an empty
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* string for the whole SVG (the default)
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*/
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*/
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Q_INVOKABLE void paint(QPainter *painter, const QRectF &rect,
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Q_INVOKABLE void paint(QPainter *painter, const QRectF &rect,
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const QString &elementID = QString());
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const QString &elementID = QString());
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/**
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/**
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* Paints the SVG represented by this object
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* Paints all or part of the SVG represented by this object
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* @arg painter the QPainter to use
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*
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* @arg x the horizontal coordinate to start painting from
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* @arg painter the QPainter to use
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* @arg y the vertical coordinate to start painting from
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* @arg x the horizontal coordinate to start painting from
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* @arg width the width of the element to draw
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* @arg y the vertical coordinate to start painting from
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* @arg height the height of the element do draw
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* @arg width the width of the element to draw
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* @arg elelementId the ID string of the element to render, or an empty
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* @arg height the height of the element do draw
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* string for the whole SVG (the default)
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* @arg elementId the ID string of the element to render, or an empty
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* string for the whole SVG (the default)
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*/
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*/
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Q_INVOKABLE void paint(QPainter *painter, int x, int y, int width,
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Q_INVOKABLE void paint(QPainter *painter, int x, int y, int width,
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int height, const QString &elementID = QString());
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int height, const QString &elementID = QString());
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/**
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/**
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* Currently set size of the SVG
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* The size of the SVG.
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*
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* If the SVG has been resized with resize(), that size will be
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* returned; otherwise, the natural size of the SVG will be returned.
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*
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* If containsMultipleImages is @c true, each element of the SVG
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* will be rendered at this size by default.
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*
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* @return the current size of the SVG
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* @return the current size of the SVG
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**/
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**/
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QSize size() const;
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QSize size() const;
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/**
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/**
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* Resizes the rendered image. Rendering will actually take place on
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* Resizes the rendered image.
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* the next call to paint.
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*
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* @arg width the new width
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* Rendering will actually take place on the next call to paint.
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* @arg height the new height
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*
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* If containsMultipleImages is @c true, each element of the SVG
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* will be rendered at this size by default; otherwise, the entire
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* image will be scaled to this size and each element will be
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* scaled appropriately.
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*
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* @arg width the new width
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* @arg height the new height
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**/
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**/
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Q_INVOKABLE void resize(qreal width, qreal height);
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Q_INVOKABLE void resize(qreal width, qreal height);
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/**
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/**
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* Resizes the rendered image. Rendering will actually take place on
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* Resizes the rendered image.
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* the next call to paint.
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*
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* @arg size the new size of the image
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* Rendering will actually take place on the next call to paint.
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*
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* If containsMultipleImages is @c true, each element of the SVG
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* will be rendered at this size by default; otherwise, the entire
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* image will be scaled to this size and each element will be
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* scaled appropriately.
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*
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* @arg size the new size of the image
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**/
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**/
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Q_INVOKABLE void resize(const QSizeF &size);
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Q_INVOKABLE void resize(const QSizeF &size);
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/**
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/**
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* Resizes the rendered image to the natural size of the SVG.
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* Resizes the rendered image to the natural size of the SVG.
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*
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* Rendering will actually take place on the next call to paint.
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* Rendering will actually take place on the next call to paint.
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**/
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**/
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Q_INVOKABLE void resize();
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Q_INVOKABLE void resize();
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/**
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/**
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* Size of a given element
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* Find the size of a given element.
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* @arg elementId the id of the element to check
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*
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* @return the current size of a given element, given the current size of the Svg
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* This is the size of the element with ID @p elementId after the SVG
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* has been scaled (see resize()). Note that this is unaffected by
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* the containsMultipleImages property.
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*
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* @arg elementId the id of the element to check
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* @return the size of a given element, given the current size of the SVG
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**/
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**/
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Q_INVOKABLE QSize elementSize(const QString &elementId) const;
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Q_INVOKABLE QSize elementSize(const QString &elementId) const;
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/**
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/**
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* The bounding rect of a given element
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* The bounding rect of a given element.
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* @arg elementId the id of the element to check
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*
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* @return the current rect of a given element, given the current size of the Svg
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* This is the bounding rect of the element with ID @p elementId after
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* the SVG has been scaled (see resize()). Note that this is
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* unaffected by the containsMultipleImages property.
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*
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* @arg elementId the id of the element to check
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* @return the current rect of a given element, given the current size of the SVG
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**/
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**/
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Q_INVOKABLE QRectF elementRect(const QString &elementId) const;
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Q_INVOKABLE QRectF elementRect(const QString &elementId) const;
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/**
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/**
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* Check when an element exists in the loaded Svg
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* Check whether an element exists in the loaded SVG.
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* @arg elementId the id of the element to check
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*
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* @return true if the element is defined in the Svg, otherwise false
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* @arg elementId the id of the element to check for
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* @return @c true if the element is defined in the SVG, otherwise @c false
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**/
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**/
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Q_INVOKABLE bool hasElement(const QString &elementId) const;
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Q_INVOKABLE bool hasElement(const QString &elementId) const;
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/**
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/**
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* Returns the element (by id) at the given point. An empty string is
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* Returns the element (by id) at the given point.
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* returned if no element is at that point.
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*
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* An empty string is returned if there no element is at @p point.
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*
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* NOTE: not implemented! This will currently return an empty string!
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*
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* @arg point a point in SVG co-ordinates
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* @return an empty string
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*/
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*/
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Q_INVOKABLE QString elementAtPoint(const QPoint &point) const;
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Q_INVOKABLE QString elementAtPoint(const QPoint &point) const;
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/**
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/**
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* @return true if the SVG file exists and the document is valid,
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* Check whether this object is backed by a valid SVG file.
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* otherwise false. This method can be expensive as it
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*
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* causes disk access.
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* This method can be expensive as it causes disk access.
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*
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* @return @c true if the SVG file exists and the document is valid,
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* otherwise @c false.
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**/
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**/
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Q_INVOKABLE bool isValid() const;
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Q_INVOKABLE bool isValid() const;
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/**
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/**
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* Set if the svg contains a single image or multiple ones.
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* Set whether the SVG contains a single image or multiple ones.
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*
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* If this is set to @c true, the SVG will be treated as a
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* collection of related images, rather than a consistent
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* drawing.
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*
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* In particular, when individual elements are rendered, this
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* affects whether the elements are resized to size() by default.
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* See paint() and pixmap().
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*
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* @arg multiple true if the svg contains multiple images
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* @arg multiple true if the svg contains multiple images
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*/
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*/
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void setContainsMultipleImages(bool multiple);
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void setContainsMultipleImages(bool multiple);
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/**
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/**
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* @return whether or not the svg contains multiple images or not
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* Whether the SVG contains multiple images.
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*
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* If this is @c true, the SVG will be treated as a
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* collection of related images, rather than a consistent
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* drawing.
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*
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* @return @c true if the SVG will be treated as containing
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* multiple images, @c false if it will be treated
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* as a coherent image.
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*/
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*/
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bool containsMultipleImages() const;
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bool containsMultipleImages() const;
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/**
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/**
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* Convenience method for setting the svg file to use for the Svg.
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* Convenience method for setting the svg file to use for the SVG.
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* @arg svgFilePath the filepath including name of the svg.
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*
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* Relative paths are looked for in the current Plasma theme.
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*
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* @arg svgFilePath the path to the SVG file
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*/
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*/
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void setImagePath(const QString &svgFilePath);
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void setImagePath(const QString &svgFilePath);
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/**
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/**
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* Convenience method to get the svg filepath and name of svg.
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* Convenience method to get the svg filepath and name of svg.
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*
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* @return the svg's filepath including name of the svg.
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* @return the svg's filepath including name of the svg.
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*/
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*/
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QString imagePath() const;
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QString imagePath() const;
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/**
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/**
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* Sets whether or not to cache the results of rendering to pixmaps.
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* Sets whether or not to cache the results of rendering to pixmaps.
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* If the Svg is resized and re-rendered often without pattern to the resulting
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*
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* pixmap dimensions, then it may be less efficient to do disk caching. A good
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* If the SVG is resized and re-rendered often (and does not keep using the
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* example might be a progress meter that uses an Svg object to paint itself:
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* same small set of pixmap dimensions), then it may be less efficient to do
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* the meter will be changing often enoughi, with enough unpredictability and
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* disk caching. A good example might be a progress meter that uses an Svg
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* without re-use of the previous pixmaps to not get a gain from caching.
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* object to paint itself: the meter will be changing often enough, with
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* enough unpredictability and without re-use of the previous pixmaps to
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* not get a gain from caching.
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*
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*
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* Most Svg objects should use the caching feature, however.
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* Most Svg objects should use the caching feature, however.
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* Therefore, the default is to use the render cache.
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* Therefore, the default is to use the render cache.
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@ -235,21 +320,31 @@ class PLASMA_EXPORT Svg : public QObject
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void setUsingRenderingCache(bool useCache);
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void setUsingRenderingCache(bool useCache);
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/**
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/**
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* @return true if the Svg is using caching for rendering results
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* Whether the rendering cache is being used.
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*
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* @return @c true if the Svg object is using caching for rendering results
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* @since 4.3
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* @since 4.3
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*/
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*/
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bool isUsingRenderingCache() const;
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bool isUsingRenderingCache() const;
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/**
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/**
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* Sets the Plasma::Theme to use with this Svg object. By default, Svg
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* Sets the Plasma::Theme to use with this Svg object.
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* objects use Plasma::Theme::default()
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*
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* @arg theme the theme object to use
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* By default, Svg objects use Plasma::Theme::default().
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*
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* This determines how relative image paths are interpreted.
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*
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* @arg theme the theme object to use
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* @since 4.3
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* @since 4.3
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*/
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*/
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void setTheme(Plasma::Theme *theme);
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void setTheme(Plasma::Theme *theme);
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/**
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/**
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* @return the theme used by this Svg
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* The Plasma::Theme used by this Svg object.
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*
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* This determines how relative image paths are interpreted.
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*
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* @return the theme used by this Svg
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*/
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*/
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Theme *theme() const;
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Theme *theme() const;
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