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39
40#ifndef QDISTANCEFIELD_H
41#define QDISTANCEFIELD_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 <QtGui/private/qtguiglobal_p.h>
55#include <qrawfont.h>
56#include <private/qfontengine_p.h>
57#include <QtCore/qshareddata.h>
58#include <QtCore/qglobal.h>
59#include <QLoggingCategory>
60
61QT_BEGIN_NAMESPACE
62
63bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(const QRawFont &f);
64bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(QFontEngine *fontEngine);
65
66int Q_GUI_EXPORT QT_DISTANCEFIELD_BASEFONTSIZE(bool narrowOutlineFont);
67int Q_GUI_EXPORT QT_DISTANCEFIELD_TILESIZE(bool narrowOutlineFont);
68int Q_GUI_EXPORT QT_DISTANCEFIELD_SCALE(bool narrowOutlineFont);
69int Q_GUI_EXPORT QT_DISTANCEFIELD_RADIUS(bool narrowOutlineFont);
70int Q_GUI_EXPORT QT_DISTANCEFIELD_HIGHGLYPHCOUNT();
71
72class Q_GUI_EXPORT QDistanceFieldData : public QSharedData
73{
74public:
75 QDistanceFieldData() : glyph(0), width(0), height(0), nbytes(0), data(nullptr) {}
76 QDistanceFieldData(const QDistanceFieldData &other);
77 ~QDistanceFieldData();
78
79 static QDistanceFieldData *create(const QSize &size);
80 static QDistanceFieldData *create(const QPainterPath &path, bool doubleResolution);
81
82 glyph_t glyph;
83 int width;
84 int height;
85 int nbytes;
86 uchar *data;
87};
88
89class Q_GUI_EXPORT QDistanceField
90{
91public:
92 QDistanceField();
93 QDistanceField(int width, int height);
94 QDistanceField(const QRawFont &font, glyph_t glyph, bool doubleResolution = false);
95 QDistanceField(QFontEngine *fontEngine, glyph_t glyph, bool doubleResolution = false);
96 QDistanceField(const QPainterPath &path, glyph_t glyph, bool doubleResolution = false);
97
98 bool isNull() const;
99
100 glyph_t glyph() const;
101 void setGlyph(const QRawFont &font, glyph_t glyph, bool doubleResolution = false);
102 void setGlyph(QFontEngine *fontEngine, glyph_t glyph, bool doubleResolution = false);
103
104 int width() const;
105 int height() const;
106
107 QDistanceField copy(const QRect &rect = QRect()) const;
108 inline QDistanceField copy(int x, int y, int w, int h) const
109 { return copy(rect: QRect(x, y, w, h)); }
110
111 uchar *bits();
112 const uchar *bits() const;
113 const uchar *constBits() const;
114
115 uchar *scanLine(int);
116 const uchar *scanLine(int) const;
117 const uchar *constScanLine(int) const;
118
119 QImage toImage(QImage::Format format = QImage::Format_ARGB32_Premultiplied) const;
120
121private:
122 QDistanceField(QDistanceFieldData *data);
123 QSharedDataPointer<QDistanceFieldData> d;
124
125 friend class QDistanceFieldData;
126};
127
128QT_END_NAMESPACE
129
130#endif // QDISTANCEFIELD_H
131

source code of qtbase/src/gui/text/qdistancefield_p.h