imagedialog.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2008-03-13
 * Description : Image files selection dialog.
 *
 * Copyright (C) 2008-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_IMAGE_DIALOG_H
#define DIGIKAM_IMAGE_DIALOG_H
 
// Qt includes
 
#include <QUrl>
#include <QScrollArea>
#include <QFileIconProvider>
#include <QIcon>
#include <QImage>
#include <QModelIndex>
#include <QFileInfo>
#include <QAbstractItemView>
 
// Local includes
 
#include "digikam_export.h"
#include "ditemtooltip.h"
 
namespace Digikam
{
 
class LoadingDescription;
class ThumbnailImageCatcher;
 
class DIGIKAM_EXPORT ImageDialogPreview : public QScrollArea
{
    Q_OBJECT
 
public:
 
    explicit ImageDialogPreview(QWidget* const parent = nullptr);
    ~ImageDialogPreview() override;
 
    QSize sizeHint() const override;
 
    static QString identifyItem(const QUrl& url, const QImage& preview = QImage());
 
public Q_SLOTS:
 
    void slotShowPreview(const QUrl& url);
 
private Q_SLOTS:
 
    void showPreview();
    void slotClearPreview();
    void slotThumbnail(const LoadingDescription& desc, const QPixmap& pix);
 
private:
 
    void resizeEvent(QResizeEvent* e) override;
 
private:
 
    class Private;
    Private* const d;
};
 
// ------------------------------------------------------------------------
 
class ImageDialogToolTip : public DItemToolTip
{
    Q_OBJECT
 
public:
 
    explicit ImageDialogToolTip();
    ~ImageDialogToolTip()                 override;
 
    void setData(QAbstractItemView* const view,
                 const QModelIndex& index,
                 const QUrl& url);
 
private:
 
    QRect   repositionRect()              override;
    QString tipContents()                 override;
 
private:
 
    class Private;
    Private* const d;
};
 
// ------------------------------------------------------------------------
 
class DIGIKAM_EXPORT ImageDialogIconProvider : public QFileIconProvider
{
 
public:
 
    explicit ImageDialogIconProvider();
    ~ImageDialogIconProvider()                                 override;
 
#if (QT_VERSION > QT_VERSION_CHECK(5, 99, 0))
    QIcon icon(QAbstractFileIconProvider::IconType type) const override;
#else
    QIcon icon(QFileIconProvider::IconType type)         const override;
#endif
 
    QIcon icon(const QFileInfo& info)                    const override;
 
private:
 
    class Private;
    Private* const d;
};
 
// ------------------------------------------------------------------------
 
class DIGIKAM_EXPORT ImageDialog : public QObject
{
    Q_OBJECT
 
public:
 
    explicit ImageDialog(QWidget* const parent,
                         const QUrl& url,
                         bool singleSelect = false,
                         const QString& caption = QString());
    ~ImageDialog();
 
    QUrl        url()                                           const;
    QList<QUrl> urls()                                          const;
    QStringList fileFormats()                                   const;
 
    void setEnableToolTips(bool val);
 
    static QUrl        getImageURL(QWidget* const parent,
                                   const QUrl& url,
                                   const QString& caption = QString());
 
    static QList<QUrl> getImageURLs(QWidget* const parent,
                                    const QUrl& url,
                                    const QString& caption = QString());
 
private:
 
    bool eventFilter(QObject* obj, QEvent* ev);
 
    void hideToolTip();
    bool acceptToolTip(const QUrl& url)                         const;
 
    // Disable
    ImageDialog(const ImageDialog&)            = delete;
    ImageDialog& operator=(const ImageDialog&) = delete;
 
private Q_SLOTS:
 
    void slotToolTip();
 
private:
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_IMAGE_DIALOG_H