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Qt Charts 2.1.0
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Performance Improvements
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--------------------
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Qt Charts now supports accelerating drawing of line and scatter series with
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OpenGL. In cases involving large amounts of points, this radically
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improves performance. For example, a high-end desktop system with a good GPU
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can draw a series with millions of points at a useful frame rate.
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See QAbstractSeries::useOpenGL documentation for more information.
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New features
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------------
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- Added support for QAbstractSeries::useOpenGL property
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- Added possibility to set labels position for QCategoryAxis
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- Added reverse axis support
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- Added support for minor ticks to value axis
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- Added support for bar series value label angle
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- Added QXYSeries::replace(QVector<QPointF> points) overload
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- Added QXYSeries::pointsVector() to get series points as a QVector.
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- Added possibility to set duration and easing curve for chart animation
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- Added a method to remove more than one point to QXYSeries
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- Added option to set labels clipping
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- Added grid color property for value axis
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- Added mapToPosition and mapToValue methods to ChartView
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- Added zooming functions to ChartView to correspond the ones available for QChart
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- Added changed signals to scatter series marker size and shape properties
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Fixed issues
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------------
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- Fixed crash with PolarChart due to wrong AreaSeries initialization
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- Fixed assert failure due to wrong default axis for DeclarativeChart
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- Fixed XYSeries point label drawing
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- Fixed issues with area series point labels
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- Fixed space reservation with empty chart title
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- Fixed axis zoom in animation crash issue
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- Fixed area series animation crash issue
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- Fixed documentation issues
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- Fixed label clipping issues when using QOpenGLWidget as graphics view viewport
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- Fixed crash when removing currently animating axis from the chart
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- Fixed drawing a ghost axis when the last axis was removed from orientation
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- Fixed missing tick and label when log axis tick was be exactly at edge of the range
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