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101 lines
2.7 KiB
101 lines
2.7 KiB
/* |
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SPDX-FileCopyrightText: 2022 Fushan Wen <qydwhotmail@gmail.com> |
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SPDX-License-Identifier: GPL-2.0-or-later |
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*/ |
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#ifndef ABSTRACTIMAGELISTMODEL_H |
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#define ABSTRACTIMAGELISTMODEL_H |
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#include <QAbstractListModel> |
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#include <QCache> |
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#include <QPixmap> |
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#include <QSize> |
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#include "imageroles.h" |
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class KFileItem; |
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struct MediaMetadata; |
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/** |
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* Base class for image list model. |
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*/ |
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class AbstractImageListModel : public QAbstractListModel, public ImageRoles |
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{ |
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Q_OBJECT |
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Q_PROPERTY(int count READ count NOTIFY countChanged) |
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public: |
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explicit AbstractImageListModel(const QSize &targetSize, QObject *parent = nullptr); |
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QHash<int, QByteArray> roleNames() const override; |
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int count() const; |
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virtual int indexOf(const QString &path) const = 0; |
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virtual void load(const QStringList &customPaths = {}) = 0; |
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/** |
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* Reload when target size changes or a new package is installed |
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*/ |
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void reload(); |
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public Q_SLOTS: |
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virtual QStringList addBackground(const QString &path) = 0; |
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/** |
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* @return removed files that should be removed from \KDirWatch |
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*/ |
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virtual QStringList removeBackground(const QString &path) = 0; |
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void slotTargetSizeChanged(const QSize &size); |
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Q_SIGNALS: |
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void countChanged(); |
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void loaded(AbstractImageListModel *model); |
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protected: |
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/** |
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* Asynchronously generates a preview. |
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* Multiple images are displayed side by side following the order in @c paths |
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* |
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* @note @c paths should have no duplicate urls. |
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*/ |
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void asyncGetPreview(const QStringList &paths, const QPersistentModelIndex &index) const; |
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/** |
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* Asynchronously extracts metadata from an image or a video file. |
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*/ |
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void asyncGetMediaMetadata(const QString &path, const QPersistentModelIndex &index) const; |
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/** |
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* Clears all cached records. |
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*/ |
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void clearCache(); |
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bool m_loading = false; |
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QSize m_screenshotSize; |
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QSize m_targetSize; |
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QCache<QStringList, QPixmap> m_imageCache; |
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QCache<QString, QString /* title */> m_backgroundTitleCache; |
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QCache<QString, QString /* author */> m_backgroundAuthorCache; |
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QCache<QString, QSize> m_imageSizeCache; |
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mutable QHash<QPersistentModelIndex, QStringList> m_previewJobsUrls; |
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mutable QHash<QString, QPersistentModelIndex> m_sizeJobsUrls; |
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QHash<QString, bool> m_pendingDeletion; |
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QStringList m_removableWallpapers; |
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QStringList m_customPaths; |
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friend class ImageProxyModel; // For m_removableWallpapers |
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private Q_SLOTS: |
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void slotMediaMetadataFound(const QString &path, const MediaMetadata &metadata); |
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void slotHandlePreview(const KFileItem &item, const QPixmap &preview); |
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void slotHandlePreviewFailed(const KFileItem &item); |
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}; |
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#endif // ABSTRACTIMAGELISTMODEL_H
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