qquicktextdocument_p.h

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// Copyright (C) 2018 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQUICKTEXTDOCUMENT_P_H
#define QQUICKTEXTDOCUMENT_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <QtCore/qhash.h>
#include <QtCore/qvariant.h>
#include <QtGui/qimage.h>
#include <QtGui/qtextdocument.h>
#include <QtGui/qabstracttextdocumentlayout.h>
#include <QtGui/qtextlayout.h>
#include <QtCore/private/qglobal_p.h>
 
QT_BEGIN_NAMESPACE
 
class QQuickItem;
class QQuickPixmap;
class QQmlContext;
 
class Q_AUTOTEST_EXPORT QQuickTextDocumentWithImageResources : public QTextDocument, public QTextObjectInterface
{
    Q_OBJECT
    Q_INTERFACES(QTextObjectInterface)
public:
    QQuickTextDocumentWithImageResources(QQuickItem *parent);
    virtual ~QQuickTextDocumentWithImageResources();
 
    int resourcesLoading() const { return outstanding; }
 
    QSizeF intrinsicSize(QTextDocument *doc, int posInDocument, const QTextFormat &format) override;
    void drawObject(QPainter *p, const QRectF &rect, QTextDocument *doc, int posInDocument, const QTextFormat &format) override;
 
    QImage image(const QTextImageFormat &format) const;
 
public Q_SLOTS:
    void clearResources();
 
Q_SIGNALS:
    void imagesLoaded();
 
protected:
    QVariant loadResource(int type, const QUrl &name) override;
 
    QQuickPixmap *loadPixmap(QQmlContext *context, const QUrl &name);
 
private Q_SLOTS:
    void requestFinished();
 
private:
    QHash<QUrl, QQuickPixmap *> m_resources;
 
    int outstanding;
    static QSet<QUrl> errors;
};
 
namespace QtPrivate {
class ProtectedLayoutAccessor: public QAbstractTextDocumentLayout
{
public:
    inline QTextCharFormat formatAccessor(int pos)
    {
        return format(pos);
    }
};
} // namespace QtPrivate
 
QT_END_NAMESPACE
 
#endif // QQUICKDOCUMENT_P_H