From 685b8db13aa19e734f239678bae23607fcededbd Mon Sep 17 00:00:00 2001
From: Alexander Volkov <a.volkov@rusbitech.ru>
Date: Thu, 28 Mar 2019 16:49:57 +0300
Subject: 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>
---
 tests/auto/gui/image/qpixmap/tst_qpixmap.cpp | 34 ++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'tests/auto/gui/image/qpixmap/tst_qpixmap.cpp')

diff --git a/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp b/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
index 9a338ad55a..4d31d80246 100644
--- a/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
+++ b/tests/auto/gui/image/qpixmap/tst_qpixmap.cpp
@@ -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;
-- 
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