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Diffstat (limited to 'src/gui/painting/qpainter.cpp')
| -rw-r--r-- | src/gui/painting/qpainter.cpp | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/src/gui/painting/qpainter.cpp b/src/gui/painting/qpainter.cpp index 5e3842cbcc..5b3ddb3957 100644 --- a/src/gui/painting/qpainter.cpp +++ b/src/gui/painting/qpainter.cpp @@ -1125,24 +1125,22 @@ void QPainterPrivate::updateState(QPainterState *newState) The QPainter class also provides a means of controlling the rendering quality through its RenderHint enum and the support for floating point precision: All the functions for drawing primitives - has a floating point version. These are often used in combination + have floating point versions. + + \snippet code/src_gui_painting_qpainter.cpp floatBased + + These are often used in combination with the \l {RenderHint}{QPainter::Antialiasing} render hint. + \snippet code/src_gui_painting_qpainter.cpp renderHint + \table 100% \row + \li Comparing concentric circles with int and float, and with or without + anti-aliased rendering. Using the floating point precision versions + produces evenly spaced rings. Anti-aliased rendering results in + smooth circles. \li \inlineimage qpainter-concentriccircles.png - \li - \b {Concentric Circles Example} - - The \l {painting/concentriccircles}{Concentric Circles} example - shows the improved rendering quality that can be obtained using - floating point precision and anti-aliasing when drawing custom - widgets. - - The application's main window displays several widgets which are - drawn using the various combinations of precision and - anti-aliasing. - \endtable The RenderHint enum specifies flags to QPainter that may or may |