1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#ifndef QDISTANCEFIELD_H
5#define QDISTANCEFIELD_H
6
7//
8// W A R N I N G
9// -------------
10//
11// This file is not part of the Qt API. It exists purely as an
12// implementation detail. This header file may change from version to
13// version without notice, or even be removed.
14//
15// We mean it.
16//
17
18#include <QtGui/private/qtguiglobal_p.h>
19#include <qrawfont.h>
20#include <private/qfontengine_p.h>
21#include <QtCore/qshareddata.h>
22#include <QtCore/qglobal.h>
23#include <QLoggingCategory>
24
25QT_BEGIN_NAMESPACE
26
27bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(const QRawFont &f);
28bool Q_GUI_EXPORT qt_fontHasNarrowOutlines(QFontEngine *fontEngine);
29
30int Q_GUI_EXPORT QT_DISTANCEFIELD_BASEFONTSIZE(bool narrowOutlineFont);
31int Q_GUI_EXPORT QT_DISTANCEFIELD_TILESIZE(bool narrowOutlineFont);
32int Q_GUI_EXPORT QT_DISTANCEFIELD_SCALE(bool narrowOutlineFont);
33int Q_GUI_EXPORT QT_DISTANCEFIELD_RADIUS(bool narrowOutlineFont);
34int Q_GUI_EXPORT QT_DISTANCEFIELD_HIGHGLYPHCOUNT();
35
36class Q_GUI_EXPORT QDistanceFieldData : public QSharedData
37{
38public:
39 QDistanceFieldData() : glyph(0), width(0), height(0), nbytes(0), data(nullptr) {}
40 QDistanceFieldData(const QDistanceFieldData &other);
41 ~QDistanceFieldData();
42
43 static QDistanceFieldData *create(const QSize &size);
44 static QDistanceFieldData *create(const QPainterPath &path, bool doubleResolution);
45 static QDistanceFieldData *create(QSize size, const QPainterPath &path, bool doubleResolution);
46
47 glyph_t glyph;
48 int width;
49 int height;
50 int nbytes;
51 uchar *data;
52};
53
54class Q_GUI_EXPORT QDistanceField
55{
56public:
57 QDistanceField();
58 QDistanceField(int width, int height);
59 QDistanceField(const QRawFont &font, glyph_t glyph, bool doubleResolution = false);
60 QDistanceField(QFontEngine *fontEngine, glyph_t glyph, bool doubleResolution = false);
61 QDistanceField(const QPainterPath &path, glyph_t glyph, bool doubleResolution = false);
62 QDistanceField(QSize size, const QPainterPath &path, glyph_t glyph, bool doubleResolution = false);
63
64 bool isNull() const;
65
66 glyph_t glyph() const;
67 void setGlyph(const QRawFont &font, glyph_t glyph, bool doubleResolution = false);
68 void setGlyph(QFontEngine *fontEngine, glyph_t glyph, bool doubleResolution = false);
69
70 int width() const;
71 int height() const;
72
73 QDistanceField copy(const QRect &rect = QRect()) const;
74 inline QDistanceField copy(int x, int y, int w, int h) const
75 { return copy(rect: QRect(x, y, w, h)); }
76
77 uchar *bits();
78 const uchar *bits() const;
79 const uchar *constBits() const;
80
81 uchar *scanLine(int);
82 const uchar *scanLine(int) const;
83 const uchar *constScanLine(int) const;
84
85 QImage toImage(QImage::Format format = QImage::Format_ARGB32_Premultiplied) const;
86
87private:
88 QDistanceField(QDistanceFieldData *data);
89 QSharedDataPointer<QDistanceFieldData> d;
90
91 friend class QDistanceFieldData;
92};
93
94QT_END_NAMESPACE
95
96#endif // QDISTANCEFIELD_H
97

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