1 files changed, 29 insertions, 9 deletions
diff --git a/src/gui/text/qdistancefield.cpp b/src/gui/text/qdistancefield.cpp
index adbde11237..66cb26c2ec 100644
--- a/src/gui/text/qdistancefield.cpp
+++ b/src/gui/text/qdistancefield.cpp
@@ -11,7 +11,7 @@ QT_BEGIN_NAMESPACE
 
 using namespace Qt::StringLiterals;
 
-Q_LOGGING_CATEGORY(lcDistanceField, "qt.distanceField");
+Q_STATIC_LOGGING_CATEGORY(lcDistanceField, "qt.distanceField");
 
 namespace
 {
@@ -474,6 +474,11 @@ static void makeDistanceField(QDistanceFieldData *data, const QPainterPath &path
     QDataBuffer<quint32> pathIndices(0);
     QDataBuffer<QPoint> pathVertices(0);
     qSimplifyPath(path, pathVertices, pathIndices, transform);
+    if (pathVertices.isEmpty()) {
+        qCWarning(lcDistanceField) << "Unexpected glyph path structure, bailing out";
+        memset(data->data, 0, data->nbytes);
+        return;
+    }
 
     const qint32 interiorColor = -0x7f80; // 8:8 signed format, -127.5
     const qint32 exteriorColor = 0x7f80; // 8:8 signed format, 127.5
@@ -839,14 +844,9 @@ QDistanceFieldData *QDistanceFieldData::create(const QSize &size)
     return data;
 }
 
-QDistanceFieldData *QDistanceFieldData::create(const QPainterPath &path, bool doubleResolution)
+QDistanceFieldData *QDistanceFieldData::create(QSize size, const QPainterPath &path, bool doubleResolution)
 {
-    int dfMargin = QT_DISTANCEFIELD_RADIUS(doubleResolution) / QT_DISTANCEFIELD_SCALE(doubleResolution);
-    int glyphWidth = qCeil(path.boundingRect().width() / QT_DISTANCEFIELD_SCALE(doubleResolution)) + dfMargin * 2;
-    int glyphHeight = qCeil(path.boundingRect().height() / QT_DISTANCEFIELD_SCALE(doubleResolution)) + dfMargin * 2;
-
-    QDistanceFieldData *data = create(QSize(glyphWidth, glyphHeight));
-
+    QDistanceFieldData *data = create(size);
     makeDistanceField(data,
                       path,
                       QT_DISTANCEFIELD_SCALE(doubleResolution),
@@ -855,6 +855,16 @@ QDistanceFieldData *QDistanceFieldData::create(const QPainterPath &path, bool do
 }
 
 
+QDistanceFieldData *QDistanceFieldData::create(const QPainterPath &path, bool doubleResolution)
+{
+    int dfMargin = QT_DISTANCEFIELD_RADIUS(doubleResolution) / QT_DISTANCEFIELD_SCALE(doubleResolution);
+    int glyphWidth = qCeil(path.boundingRect().width() / QT_DISTANCEFIELD_SCALE(doubleResolution)) + dfMargin * 2;
+    int glyphHeight = qCeil(path.boundingRect().height() / QT_DISTANCEFIELD_SCALE(doubleResolution)) + dfMargin * 2;
+
+    return create(QSize(glyphWidth, glyphHeight), path, doubleResolution);
+}
+
+
 QDistanceField::QDistanceField()
     : d(new QDistanceFieldData)
 {
@@ -875,6 +885,16 @@ QDistanceField::QDistanceField(QFontEngine *fontEngine, glyph_t glyph, bool doub
     setGlyph(fontEngine, glyph, doubleResolution);
 }
 
+QDistanceField::QDistanceField(QSize size, const QPainterPath &path, glyph_t glyph, bool doubleResolution)
+{
+    QPainterPath dfPath = path;
+    dfPath.translate(-dfPath.boundingRect().topLeft());
+    dfPath.setFillRule(Qt::WindingFill);
+
+    d = QDistanceFieldData::create(size, dfPath, doubleResolution);
+    d->glyph = glyph;
+}
+
 QDistanceField::QDistanceField(const QPainterPath &path, glyph_t glyph, bool doubleResolution)
 {
     QPainterPath dfPath = path;
@@ -1058,7 +1078,7 @@ QImage QDistanceField::toImage(QImage::Format format) const
         }
 
         if (image.format() != format)
-            image = image.convertToFormat(format);
+            image = std::move(image).convertToFormat(format);
     }
 
     return image;