summaryrefslogtreecommitdiffstats
path: root/src/gui/image/qiconloader_p.h
blob: 707107c6fc10bdac62ba5637a301d813b00d6e6b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QDESKTOPICON_P_H
#define QDESKTOPICON_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <QtGui/QIcon>
#include <QtGui/QIconEngine>
#include <QtGui/QPixmapCache>
#include <private/qicon_p.h>
#include <private/qfactoryloader_p.h>

QT_BEGIN_NAMESPACE

class QIconLoader;

struct QIconDirInfo
{
    enum Type { Fixed, Scalable, Threshold };
    QIconDirInfo(const QString &_path = QString()) :
            path(_path),
            size(0),
            maxSize(0),
            minSize(0),
            threshold(0),
            type(Threshold) {}
    QString path;
    short size;
    short maxSize;
    short minSize;
    short threshold;
    Type type : 4;
};

class QIconLoaderEngineEntry
 {
public:
    virtual QPixmap pixmap(const QSize &size,
                           QIcon::Mode mode,
                           QIcon::State state) = 0;
    QString filename;
    QIconDirInfo dir;
    static int count;
};

struct ScalableEntry : public QIconLoaderEngineEntry
{
    QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
    QIcon svgIcon;
};

struct PixmapEntry : public QIconLoaderEngineEntry
{
    QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
    QPixmap basePixmap;
};

typedef QList<QIconLoaderEngineEntry*> QThemeIconEntries;

class QIconLoaderEngine : public QIconEngineV2
{
public:
    QIconLoaderEngine(const QString& iconName = QString());
    ~QIconLoaderEngine();

    void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state);
    QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
    QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state);
    QIconEngineV2 *clone() const;
    bool read(QDataStream &in);
    bool write(QDataStream &out) const;

private:
    QString key() const;
    bool hasIcon() const;
    void ensureLoaded();
    void virtual_hook(int id, void *data);
    QIconLoaderEngineEntry *entryForSize(const QSize &size);
    QIconLoaderEngine(const QIconLoaderEngine &other);
    QThemeIconEntries m_entries;
    QString m_iconName;
    uint m_key;

    friend class QIconLoader;
};

class QIconTheme
{
public:
    QIconTheme(const QString &name);
    QIconTheme() : m_valid(false) {};
    QStringList parents() { return m_parents; }
    QList <QIconDirInfo> keyList() { return m_keyList; }
    QString contentDir() { return m_contentDir; }
    bool isValid() { return m_valid; }

private:
    QString m_contentDir;
    QList <QIconDirInfo> m_keyList;
    QStringList m_parents;
    bool m_valid;
};

class QIconLoader : public QObject
{
public:
    QIconLoader();
    QThemeIconEntries loadIcon(const QString &iconName) const;
    uint themeKey() const { return m_themeKey; }

    QString themeName() const { return m_userTheme.isEmpty() ? m_systemTheme : m_userTheme; }
    void setThemeName(const QString &themeName);
    QIconTheme theme() { return themeList.value(themeName()); }
    void setThemeSearchPath(const QStringList &searchPaths);
    QStringList themeSearchPaths() const;
    QIconDirInfo dirInfo(int dirindex);
    static QIconLoader *instance();
    void updateSystemTheme();
    void invalidateKey() { m_themeKey++; }

private:
    QThemeIconEntries findIconHelper(const QString &themeName,
                                     const QString &iconName,
                                     QStringList &visited) const;
    uint m_themeKey;
    bool m_supportsSvg;

    mutable QString m_userTheme;
    mutable QString m_systemTheme;
    mutable QStringList m_iconDirs;
    mutable QHash <QString, QIconTheme> themeList;
};

QT_END_NAMESPACE

#endif // QDESKTOPICON_P_H