Add QQuickFontMetrics.

This will be a private C++ type that is exposed to QtQuick 2.4 as
FontMetrics.

[ChangeLog][QtQuick] Added QQuickFontMetrics, which provides a subset
of QFontMetricsF's API.

Change-Id: Iac31e5a555bd8f1dc0904b8de0408e5f1a402b25
Reviewed-by: J-P Nurmi <jpnurmi@digia.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@digia.com>

1 files changed, 114 insertions, 0 deletions

diff --git a/src/quick/util/qquickfontmetrics_p.h b/src/quick/util/qquickfontmetrics_p.h
new file mode 100644
index 0000000000..4017fd4061
--- /dev/null
+++ b/src/quick/util/qquickfontmetrics_p.h
@@ -0,0 +1,114 @@
+/****************************************************************************
+**
+** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the QtQuick module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/contact-us.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QQUICKFONTMETRICS_H
+#define QQUICKFONTMETRICS_H
+
+#include <qqml.h>
+
+#include <QtGui/QFontMetricsF>
+#include <QtCore/QObject>
+
+QT_BEGIN_NAMESPACE
+
+class QFont;
+
+class Q_AUTOTEST_EXPORT QQuickFontMetrics : public QObject
+{
+    Q_OBJECT
+
+    Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)
+    Q_PROPERTY(qreal ascent READ ascent NOTIFY fontChanged)
+    Q_PROPERTY(qreal descent READ descent NOTIFY fontChanged)
+    Q_PROPERTY(qreal height READ height NOTIFY fontChanged)
+    Q_PROPERTY(qreal leading READ leading NOTIFY fontChanged)
+    Q_PROPERTY(qreal lineSpacing READ lineSpacing NOTIFY fontChanged)
+    Q_PROPERTY(qreal minimumLeftBearing READ minimumLeftBearing NOTIFY fontChanged)
+    Q_PROPERTY(qreal minimumRightBearing READ minimumRightBearing NOTIFY fontChanged)
+    Q_PROPERTY(qreal maximumCharacterWidth READ maximumCharacterWidth NOTIFY fontChanged)
+    Q_PROPERTY(qreal xHeight READ xHeight NOTIFY fontChanged)
+    Q_PROPERTY(qreal averageCharacterWidth READ averageCharacterWidth NOTIFY fontChanged)
+    Q_PROPERTY(qreal underlinePosition READ underlinePosition NOTIFY fontChanged)
+    Q_PROPERTY(qreal overlinePosition READ overlinePosition NOTIFY fontChanged)
+    Q_PROPERTY(qreal strikeOutPosition READ strikeOutPosition NOTIFY fontChanged)
+    Q_PROPERTY(qreal lineWidth READ lineWidth NOTIFY fontChanged)
+public:
+    explicit QQuickFontMetrics(QObject *parent = 0);
+    ~QQuickFontMetrics();
+
+    QFont font() const;
+    void setFont(const QFont &font);
+
+    qreal ascent() const;
+    qreal descent() const;
+    qreal height() const;
+    qreal leading() const;
+    qreal lineSpacing() const;
+    qreal minimumLeftBearing() const;
+    qreal minimumRightBearing() const;
+    qreal maximumCharacterWidth() const;
+
+    qreal xHeight() const;
+    qreal averageCharacterWidth() const;
+
+    qreal underlinePosition() const;
+    qreal overlinePosition() const;
+    qreal strikeOutPosition() const;
+    qreal lineWidth() const;
+
+    Q_INVOKABLE qreal advanceWidth(const QString &text) const;
+    Q_INVOKABLE QRectF boundingRect(const QString &text) const;
+    Q_INVOKABLE QRectF tightBoundingRect(const QString &text) const;
+    Q_INVOKABLE QString elidedText(const QString &text, Qt::TextElideMode mode, qreal width, int flags = 0) const;
+
+Q_SIGNALS:
+    void fontChanged(const QFont &font);
+
+private:
+    QFont m_font;
+    QFontMetricsF m_metrics;
+};
+
+QT_END_NAMESPACE
+
+QML_DECLARE_TYPE(QQuickFontMetrics)
+
+#endif // QQUICKFONTMETRICS_H