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39
40#ifndef QABSTRACTFILEICONENGINE_P_H
41#define QABSTRACTFILEICONENGINE_P_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 <QtCore/qfileinfo.h>
55#include <private/qicon_p.h>
56#include <qpa/qplatformtheme.h>
57
58QT_BEGIN_NAMESPACE
59
60class Q_GUI_EXPORT QAbstractFileIconEngine : public QPixmapIconEngine
61{
62public:
63 explicit QAbstractFileIconEngine(const QFileInfo &info, QPlatformTheme::IconOptions opts)
64 : QPixmapIconEngine(), m_fileInfo(info), m_options(opts) {}
65
66 QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State) override;
67 QPixmap scaledPixmap(const QSize &size, QIcon::Mode mode, QIcon::State, qreal scale) override;
68 QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state) override;
69
70 QFileInfo fileInfo() const { return m_fileInfo; }
71 QPlatformTheme::IconOptions options() const { return m_options; }
72
73 // Helper to convert a sequence of ints to a list of QSize
74 template <class It> static QList<QSize> toSizeList(It i1, It i2);
75
76protected:
77 virtual QPixmap filePixmap(const QSize &size, QIcon::Mode mode, QIcon::State) = 0;
78 virtual QString cacheKey() const;
79
80private:
81 const QFileInfo m_fileInfo;
82 const QPlatformTheme::IconOptions m_options;
83};
84
85template <class It>
86inline QList<QSize> QAbstractFileIconEngine::toSizeList(It i1, It i2)
87{
88 QList<QSize> result;
89 result.reserve(int(i2 - i1));
90 for ( ; i1 != i2; ++i1)
91 result.append(QSize(*i1, *i1));
92 return result;
93}
94
95QT_END_NAMESPACE
96
97#endif // QABSTRACTFILEICONENGINE_P_H
98