Keep reported point/pixel size in sync.

This allows you to, for example, bind to a Text's font.pixelSize, even
if one was never explicitly set.

Task-number: QTBUG-11111

2 files changed, 14 insertions, 0 deletions

diff --git a/src/declarative/qml/qdeclarativevaluetype.cpp b/src/declarative/qml/qdeclarativevaluetype.cpp
index dbc25bb..c17ec95 100644
--- a/src/declarative/qml/qdeclarativevaluetype.cpp
+++ b/src/declarative/qml/qdeclarativevaluetype.cpp
@@ -47,6 +47,8 @@
 
 QT_BEGIN_NAMESPACE
 
+Q_DECL_IMPORT extern int qt_defaultDpi();
+
 template<typename T>
 int qmlRegisterValueTypeEnums(const char *qmlName)
 {
@@ -909,6 +911,11 @@ void QDeclarativeFontValueType::setStrikeout(bool b)
 
 qreal QDeclarativeFontValueType::pointSize() const
 {
+    if (font.pointSizeF() == -1) {
+        if (dpi.isNull)
+            dpi = qt_defaultDpi();
+        return font.pixelSize() * qreal(72.) / qreal(dpi);
+    }
     return font.pointSizeF();
 }
 
@@ -929,6 +936,11 @@ void QDeclarativeFontValueType::setPointSize(qreal size)
 
 int QDeclarativeFontValueType::pixelSize() const
 {
+    if (font.pixelSize() == -1) {
+        if (dpi.isNull)
+            dpi = qt_defaultDpi();
+        return (font.pointSizeF() * dpi) / qreal(72.);
+    }
     return font.pixelSize();
 }
 
diff --git a/src/declarative/qml/qdeclarativevaluetype_p.h b/src/declarative/qml/qdeclarativevaluetype_p.h
index 3eaecc1..4b1bbd6 100644
--- a/src/declarative/qml/qdeclarativevaluetype_p.h
+++ b/src/declarative/qml/qdeclarativevaluetype_p.h
@@ -55,6 +55,7 @@
 
 #include "qdeclarativeproperty.h"
 #include "private/qdeclarativeproperty_p.h"
+#include "private/qdeclarativenullablevalue_p_p.h"
 
 #include <QtCore/qobject.h>
 #include <QtCore/qrect.h>
@@ -547,6 +548,7 @@ private:
     QFont font;
     bool pixelSizeSet;
     bool pointSizeSet;
+    mutable QDeclarativeNullableValue<int> dpi;
 };
 
 QT_END_NAMESPACE