conflicting packages
QwtTextEngine(3) | Qwt User's Guide | QwtTextEngine(3) |
NAME¶
QwtTextEngine - Abstract base class for rendering text strings.SYNOPSIS¶
#include <qwt_text_engine.h> Inherited by QwtMathMLTextEngine, QwtPlainTextEngine, and QwtRichTextEngine.Public Member Functions¶
virtual void draw (QPainter *painter, const QRect &rect, int flags, const QString &text) const =0
Protected Member Functions¶
QwtTextEngine ()
Detailed Description¶
Abstract base class for rendering text strings.QwtText::setTextEngine()
Constructor & Destructor Documentation¶
QwtTextEngine::~QwtTextEngine () [virtual]¶
Destructor.QwtTextEngine::QwtTextEngine () [protected]¶
Constructor.Member Function Documentation¶
virtual void QwtTextEngine::draw (QPainter *painter, const QRect &rect, intflags, const QString &text) const [pure virtual] Draw the text in a clipping rectangle¶
Parameters:painter Painter
rect Clipping rectangle
flags Bitwise OR of the flags like in for QPainter::drawText
text Text to be rendered
virtual int QwtTextEngine::heightForWidth (const QFont &font, intflags, const QString &text, intwidth) const [pure virtual] Find the height for a given width¶
Parameters:font Font of the text
flags Bitwise OR of the flags used like in QPainter::drawText
text Text to be rendered
width Width
Returns:
Calculated height
virtual bool QwtTextEngine::mightRender (const QString &text) const [pure virtual] Test if a string can be rendered by this text engine¶
Parameters:text Text to be tested
Returns:
true, if it can be rendered
virtual void QwtTextEngine::textMargins (const QFont &font, const QString &text, int &left, int &right, int &top, int &bottom) const [pure virtual] Return margins around the texts¶
The textSize might include margins around the text, like QFontMetrics::descent. In situations where texts need to be aligend in detail, knowing these margins might improve the layout calculations. Parameters:font Font of the text
text Text to be rendered
left Return value for the left margin
right Return value for the right margin
top Return value for the top margin
bottom Return value for the bottom margin
virtual QSize QwtTextEngine::textSize (const QFont &font, intflags, const QString &text) const [pure virtual] Returns the size, that is needed to render text¶
Parameters:font Font of the text
flags Bitwise OR of the flags like in for QPainter::drawText
text Text to be rendered
Returns:
Caluclated size
Author¶
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