71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
// This file Copyright © Mnemosyne LLC.
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// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
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// or any future license endorsed by Mnemosyne LLC.
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// License text can be found in the licenses/ folder.
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#pragma once
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#if !defined(_WIN32)
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#include <unordered_set>
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#endif
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#include <optional>
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#include <unordered_map>
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#include <QFileIconProvider>
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#include <QIcon>
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#include <QString>
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#include <QStyle>
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#include "Utils.h" // std::hash<QString>()
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#if defined(_WIN32)
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class QFileInfo;
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#endif
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class QModelIndex;
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class IconCache
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{
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public:
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static IconCache& get();
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[[nodiscard]] constexpr auto const& folderIcon() const noexcept
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{
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return folder_icon_;
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}
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[[nodiscard]] constexpr auto const& fileIcon() const noexcept
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{
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return file_icon_;
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}
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QIcon guessMimeIcon(QString const& filename, QIcon fallback = {}) const;
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QIcon getMimeTypeIcon(QString const& mime_type, bool multifile) const;
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QIcon getThemeIcon(QString const& name, std::optional<QStyle::StandardPixmap> const& fallback = {}) const;
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protected:
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IconCache() = default;
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private:
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QIcon const folder_icon_ = QFileIconProvider().icon(QFileIconProvider::Folder);
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QIcon const file_icon_ = QFileIconProvider().icon(QFileIconProvider::File);
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mutable std::unordered_map<QString, QIcon> name_to_icon_;
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mutable std::unordered_map<QString, QIcon> name_to_emblem_icon_;
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#if defined(_WIN32)
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void addAssociatedFileIcon(QFileInfo const& file_info, unsigned int icon_size, QIcon& icon) const;
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#else
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mutable std::unordered_set<QString> suffixes_;
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mutable std::unordered_map<QString, QIcon> ext_to_icon_;
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QIcon getMimeIcon(QString const& filename) const;
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#endif
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QIcon getThemeIcon(
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QString const& name,
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QString const& fallbackName,
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std::optional<QStyle::StandardPixmap> const& fallbackPixmap) const;
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};
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