diff options
Diffstat (limited to 'src/gui/kernel/qhighdpiscaling_p.h')
| -rw-r--r-- | src/gui/kernel/qhighdpiscaling_p.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/src/gui/kernel/qhighdpiscaling_p.h b/src/gui/kernel/qhighdpiscaling_p.h index 9e33787f53..fac3ae420d 100644 --- a/src/gui/kernel/qhighdpiscaling_p.h +++ b/src/gui/kernel/qhighdpiscaling_p.h @@ -47,6 +47,7 @@ #include <QtCore/qglobal.h> #include <QtCore/qmargins.h> +#include <QtCore/qmath.h> #include <QtCore/qrect.h> #include <QtCore/qvector.h> #include <QtCore/qloggingcategory.h> @@ -382,6 +383,24 @@ inline QRegion fromNativeLocalRegion(const QRegion &pixelRegion, const QWindow * return pointRegion; } +// When mapping expose events to Qt rects: round top/left towards the origin and +// bottom/right away from the origin, making sure that we cover the whole window. +inline QRegion fromNativeLocalExposedRegion(const QRegion &pixelRegion, const QWindow *window) +{ + if (!QHighDpiScaling::isActive()) + return pixelRegion; + + const qreal scaleFactor = QHighDpiScaling::factor(window); + QRegion pointRegion; + foreach (const QRect &rect, pixelRegion.rects()) { + const QPointF topLeftP = QPointF(rect.topLeft()) / scaleFactor; + const QPointF bottomRightP = QPointF(rect.bottomRight()) / scaleFactor; + pointRegion += QRect(QPoint(qFloor(topLeftP.x()), qFloor(topLeftP.y())), + QPoint(qCeil(bottomRightP.x()), qCeil(bottomRightP.y()))); + } + return pointRegion; +} + inline QRegion toNativeLocalRegion(const QRegion &pointRegion, const QWindow *window) { if (!QHighDpiScaling::isActive()) @@ -498,6 +517,8 @@ namespace QHighDpi { template <typename T> inline T fromNativeLocalRegion(const T &value, ...) { return value; } template <typename T> inline + T fromNativeLocalExposedRegion(const T &value, ...) { return value; } + template <typename T> inline T toNativeLocalRegion(const T &value, ...) { return value; } template <typename T> inline |