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39
40#ifndef QQUICKFONTMETRICS_H
41#define QQUICKFONTMETRICS_H
42
43//
44// W A R N I N G
45// -------------
46//
47// This file is not part of the Qt API. It exists purely as an
48// implementation detail. This header file may change from version to
49// version without notice, or even be removed.
50//
51// We mean it.
52//
53
54#include <qqml.h>
55
56#include <QtGui/QFontMetricsF>
57#include <QtCore/QObject>
58
59QT_BEGIN_NAMESPACE
60
61class QFont;
62
63class Q_AUTOTEST_EXPORT QQuickFontMetrics : public QObject
64{
65 Q_OBJECT
66
67 Q_PROPERTY(QFont font READ font WRITE setFont NOTIFY fontChanged)
68 Q_PROPERTY(qreal ascent READ ascent NOTIFY fontChanged)
69 Q_PROPERTY(qreal descent READ descent NOTIFY fontChanged)
70 Q_PROPERTY(qreal height READ height NOTIFY fontChanged)
71 Q_PROPERTY(qreal leading READ leading NOTIFY fontChanged)
72 Q_PROPERTY(qreal lineSpacing READ lineSpacing NOTIFY fontChanged)
73 Q_PROPERTY(qreal minimumLeftBearing READ minimumLeftBearing NOTIFY fontChanged)
74 Q_PROPERTY(qreal minimumRightBearing READ minimumRightBearing NOTIFY fontChanged)
75 Q_PROPERTY(qreal maximumCharacterWidth READ maximumCharacterWidth NOTIFY fontChanged)
76 Q_PROPERTY(qreal xHeight READ xHeight NOTIFY fontChanged)
77 Q_PROPERTY(qreal averageCharacterWidth READ averageCharacterWidth NOTIFY fontChanged)
78 Q_PROPERTY(qreal underlinePosition READ underlinePosition NOTIFY fontChanged)
79 Q_PROPERTY(qreal overlinePosition READ overlinePosition NOTIFY fontChanged)
80 Q_PROPERTY(qreal strikeOutPosition READ strikeOutPosition NOTIFY fontChanged)
81 Q_PROPERTY(qreal lineWidth READ lineWidth NOTIFY fontChanged)
82 QML_NAMED_ELEMENT(FontMetrics)
83 QML_ADDED_IN_MINOR_VERSION(4)
84public:
85 explicit QQuickFontMetrics(QObject *parent = nullptr);
86 ~QQuickFontMetrics();
87
88 QFont font() const;
89 void setFont(const QFont &font);
90
91 qreal ascent() const;
92 qreal descent() const;
93 qreal height() const;
94 qreal leading() const;
95 qreal lineSpacing() const;
96 qreal minimumLeftBearing() const;
97 qreal minimumRightBearing() const;
98 qreal maximumCharacterWidth() const;
99
100 qreal xHeight() const;
101 qreal averageCharacterWidth() const;
102
103 qreal underlinePosition() const;
104 qreal overlinePosition() const;
105 qreal strikeOutPosition() const;
106 qreal lineWidth() const;
107
108 Q_INVOKABLE qreal advanceWidth(const QString &text) const;
109 Q_INVOKABLE QRectF boundingRect(const QString &text) const;
110 Q_INVOKABLE QRectF tightBoundingRect(const QString &text) const;
111 Q_INVOKABLE QString elidedText(const QString &text, Qt::TextElideMode mode, qreal width, int flags = 0) const;
112
113Q_SIGNALS:
114 void fontChanged(const QFont &font);
115
116private:
117 QFont m_font;
118 QFontMetricsF m_metrics;
119};
120
121QT_END_NAMESPACE
122
123QML_DECLARE_TYPE(QQuickFontMetrics)
124
125#endif // QQUICKFONTMETRICS_H
126

source code of qtdeclarative/src/quick/util/qquickfontmetrics_p.h