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| -rw-r--r-- | src/gui/kernel/qguiapplication_p.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/gui/kernel/qguiapplication_p.h b/src/gui/kernel/qguiapplication_p.h index 404b55950a..40caf3ba56 100644 --- a/src/gui/kernel/qguiapplication_p.h +++ b/src/gui/kernel/qguiapplication_p.h @@ -206,6 +206,28 @@ public: constexpr void reset() noexcept { *this = QLastCursorPosition{}; } + // QGuiApplicationPrivate::lastCursorPosition is used for mouse-move detection + // but even QPointF's qFuzzCompare on doubles is too precise, and causes move-noise + // e.g. on macOS (see QTBUG-111170). So we specialize the equality operators here + // to use single-point precision. + friend constexpr bool operator==(const QLastCursorPosition &p1, const QPointF &p2) noexcept + { + return qFuzzyCompare(float(p1.x()), float(p2.x())) + && qFuzzyCompare(float(p1.y()), float(p2.y())); + } + friend constexpr bool operator!=(const QLastCursorPosition &p1, const QPointF &p2) noexcept + { + return !(p1 == p2); + } + friend constexpr bool operator==(const QPointF &p1, const QLastCursorPosition &p2) noexcept + { + return p2 == p1; + } + friend constexpr bool operator!=(const QPointF &p1, const QLastCursorPosition &p2) noexcept + { + return !(p2 == p1); + } + private: QPointF thePoint; } lastCursorPosition; |