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    41 

    42 #ifndef QDESKTOPICON_P_H

    43 #define QDESKTOPICON_P_H

    44 

    45 //

    46 //  W A R N I N G

    47 //  -------------

    48 //

    49 // This file is not part of the Qt API.  It exists purely as an

    50 // implementation detail.  This header file may change from version to

    51 // version without notice, or even be removed.

    52 //

    53 // We mean it.

    54 //

    55 

    56 #include <QtGui/QIcon>

    57 #include <QtGui/QIconEngine>

    58 #include <QtGui/QPixmapCache>

    59 #include <private/qicon_p.h>

    60 #include <private/qfactoryloader_p.h>

    61 #include <QtCore/QHash>

    62 

    63 QT_BEGIN_NAMESPACE

    64 

    65 class QIconLoader;

    66 

    67 struct QIconDirInfo

    68 {

    69     enum Type { Fixed, Scalable, Threshold };

    70     QIconDirInfo(const QString &_path = QString()) :

    71             path(_path),

    72             size(0),

    73             maxSize(0),

    74             minSize(0),

    75             threshold(0),

    76             type(Threshold) {}

    77     QString path;

    78     short size;

    79     short maxSize;

    80     short minSize;

    81     short threshold;

    82     Type type : 4;

    83 };

    84 

    85 class QIconLoaderEngineEntry

    86  {

    87 public:

    88     virtual ~QIconLoaderEngineEntry() {}

    89     virtual QPixmap pixmap(const QSize &size,

    90                            QIcon::Mode mode,

    91                            QIcon::State state) = 0;

    92     QString filename;

    93     QIconDirInfo dir;

    94     static int count;

    95 };

    96 

    97 struct ScalableEntry : public QIconLoaderEngineEntry

    98 {

    99     QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);

   100     QIcon svgIcon;

   101 };

   102 

   103 struct PixmapEntry : public QIconLoaderEngineEntry

   104 {

   105     QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);

   106     QPixmap basePixmap;

   107 };

   108 

   109 typedef QList<QIconLoaderEngineEntry*> QThemeIconEntries;

   110 

   111 class QIconLoaderEngine : public QIconEngineV2

   112 {

   113 public:

   114     QIconLoaderEngine(const QString& iconName = QString());

   115     ~QIconLoaderEngine();

   116 

   117     void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state);

   118     QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);

   119     QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state);

   120     QIconEngineV2 *clone() const;

   121     bool read(QDataStream &in);

   122     bool write(QDataStream &out) const;

   123 

   124 private:

   125     QString key() const;

   126     bool hasIcon() const;

   127     void ensureLoaded();

   128     void virtual_hook(int id, void *data);

   129     QIconLoaderEngineEntry *entryForSize(const QSize &size);

   130     QIconLoaderEngine(const QIconLoaderEngine &other);

   131     QThemeIconEntries m_entries;

   132     QString m_iconName;

   133     uint m_key;

   134 

   135     friend class QIconLoader;

   136 };

   137 

   138 class QIconTheme

   139 {

   140 public:

   141     QIconTheme(const QString &name);

   142     QIconTheme() : m_valid(false) {}

   143     QStringList parents() { return m_parents; }

   144     QList <QIconDirInfo> keyList() { return m_keyList; }

   145     QString contentDir() { return m_contentDir; }

   146     bool isValid() { return m_valid; }

   147 

   148 private:

   149     QString m_contentDir;

   150     QList <QIconDirInfo> m_keyList;

   151     QStringList m_parents;

   152     bool m_valid;

   153 };

   154 

   155 class QIconLoader : public QObject

   156 {

   157 public:

   158     QIconLoader();

   159     QThemeIconEntries loadIcon(const QString &iconName) const;

   160     uint themeKey() const { return m_themeKey; }

   161 

   162     QString themeName() const { return m_userTheme.isEmpty() ? m_systemTheme : m_userTheme; }

   163     void setThemeName(const QString &themeName);

   164     QIconTheme theme() { return themeList.value(themeName()); }

   165     void setThemeSearchPath(const QStringList &searchPaths);

   166     QStringList themeSearchPaths() const;

   167     QIconDirInfo dirInfo(int dirindex);

   168     static QIconLoader *instance();

   169     void updateSystemTheme();

   170     void invalidateKey() { m_themeKey++; }

   171 

   172 private:

   173     QThemeIconEntries findIconHelper(const QString &themeName,

   174                                      const QString &iconName,

   175                                      QStringList &visited) const;

   176     uint m_themeKey;

   177     bool m_supportsSvg;

   178 

   179     mutable QString m_userTheme;

   180     mutable QString m_systemTheme;

   181     mutable QStringList m_iconDirs;

   182     mutable QHash <QString, QIconTheme> themeList;

   183 };

   184 

   185 QT_END_NAMESPACE

   186 

   187 #endif // QDESKTOPICON_P_H