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Forward devicePixelRatio in QPixmap::mask()

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Also add a test checking that devicePixelRatio is forwarded to
derivatives of QPixmap.

Change-Id: Idb2b3f033ccc0fd49bf54b11f5dffbce5a19b006
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
This commit is contained in:
Alexander Volkov 2019-03-28 16:49:57 +03:00
parent 954b73445c
commit 685b8db13a
2 changed files with 35 additions and 0 deletions
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1
src/gui/image/qplatformpixmap.cpp
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@ -178,6 +178,7 @@ QBitmap QPlatformPixmap::mask() const
if (mask.isNull()) // allocation failed
return QBitmap();
mask.setDevicePixelRatio(devicePixelRatio());
mask.setColorCount(2);
mask.setColor(0, QColor(Qt::color0).rgba());
mask.setColor(1, QColor(Qt::color1).rgba());

34
tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
View File

@ -121,6 +121,7 @@ private slots:
void copy();
void deepCopyPreservesDpr();
void dprPassthrough();
void depthOfNullObjects();
void transformed();
@ -1169,6 +1170,39 @@ void tst_QPixmap::deepCopyPreservesDpr()
QCOMPARE(dest.devicePixelRatio(), dpr);
}
void tst_QPixmap::dprPassthrough()
{
const qreal dpr = 2;
QPixmap src(32, 32);
src.setDevicePixelRatio(dpr);
src.fill(Qt::transparent);
QCOMPARE(src.devicePixelRatio(), dpr);
QImage img = src.toImage();
QCOMPARE(img.devicePixelRatio(), dpr);
QPixmap pm(1, 1);
pm.convertFromImage(img);
QCOMPARE(pm.devicePixelRatio(), dpr);
QBitmap heuristicMask = src.createHeuristicMask();
QCOMPARE(heuristicMask.devicePixelRatio(), dpr);
QBitmap maskFromColor = src.createMaskFromColor(Qt::white);
QCOMPARE(maskFromColor.devicePixelRatio(), dpr);
QBitmap mask = src.mask();
QCOMPARE(mask.devicePixelRatio(), dpr);
QPixmap scaled = src.scaled(16, 16);
QCOMPARE(scaled.devicePixelRatio(), dpr);
QTransform t;
t.rotate(90);
QPixmap transformed = src.transformed(t);
QCOMPARE(transformed.devicePixelRatio(), dpr);
}
void tst_QPixmap::depthOfNullObjects()
{
QBitmap b1;