v0.12.5

Version 0.12.5

• Add support for NumPy 2.0:
  • Use numpy.asarray instead of numpy.array(..., copy=False)
  • Update requirements to remove the NumPy version upper bound constraint

Version 0.12.4

• Fixed segmentation fault issue reported in the PlotPy project:
  • See PlotPy's Issue #13 for the
    original issue.
  • The issue was caused by the QwtSymbol class constructor, and more specifically
    by its private data object, which instanciated an empty QtPainterPath object,
    causing a segmentation fault on Linux, Python 3.12 and PyQt5.

Version 0.12.3

• Fixed Fatal Python error issue reported in the PlotPy project:
  • See PlotPy's Issue #11 for the
    original issue, even if the problem is not directly pointed out in the issue
    comments.
  • The issue was caused by the QwtAbstractScaleDraw cache mechanism, which was
    keeping references to QSizeF objects that were deleted by the garbage collector
    at some point. This was causing a segmentation fault, but only on Linux, and
    only when executing the PlotPy test suite in a specific order.
  • Thanks to @yuzibo for helping to reproduce the issue and providing a test case,
    that is the PlotPy Debian package build process.

Version 0.12.2

For this release, test coverage is 72%.

• Preparing for NumPy V2 compatibility: this is a work in progress, as NumPy V2 is not
  yet released. In the meantime, requirements have been updated to exclude NumPy V2.
• Fix QwtPlot.axisInterval (was raising AttributeError)
• Removed unnecessary dependencies (pytest-qt, pytest-cov)
• Moved conftest.py to project root
• Project code formatting: using ruff instead of black and isort

Version 0.12.1

• Fixed ColorStops.stops method (was returning a copy of the list of stops instead
  of the list itself)

Version 0.12.0

• 30% performance improvement (measured by qwt.tests.test_loadtest) by optimizing
  the QwtAbstractScaleDraw.tickLabel method:
  • Suppressed an unnecessary call to QFont.textSize (which can be quite slow)
  • Cached the text size with the label QwtText object
• Added support for margins in QwtPlot (see Issue #82):
  • Default margins are set to 0.05 (5% of the plot area) at each side of the plot
  • Margins are adjustable for each plot axis using QwtPlot.setAxisMargin (and
    QwtPlot.axisMargin to get the current value)
• Added an additional margin to the left of ticks labels: this margin is set to one
  character width, to avoid the labels to be truncated while keeping a tight layout
• Slighly improved the new flat style (see V0.7.0) by selecting default fonts
• API breaking change: QwtLinearColorMap.colorStops now returns a list of ColorStop
  objects instead of the list of stop values