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Diffstat (limited to 'src/plugins/imageformats/gif/qgifhandler_p.h')
-rw-r--r-- | src/plugins/imageformats/gif/qgifhandler_p.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/plugins/imageformats/gif/qgifhandler_p.h b/src/plugins/imageformats/gif/qgifhandler_p.h new file mode 100644 index 0000000000..bc3debe83c --- /dev/null +++ b/src/plugins/imageformats/gif/qgifhandler_p.h @@ -0,0 +1,105 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +** WARNING: +** A separate license from Unisys may be required to use the gif +** reader. See http://www.unisys.com/about__unisys/lzw/ +** for information from Unisys +** +****************************************************************************/ + +#ifndef QGIFHANDLER_P_H +#define QGIFHANDLER_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 <QtGui/qimageiohandler.h> +#include <QtGui/qimage.h> +#include <QtCore/qbytearray.h> + +QT_BEGIN_NAMESPACE + +class QGIFFormat; +class QGifHandler : public QImageIOHandler +{ +public: + QGifHandler(); + ~QGifHandler(); + + bool canRead() const Q_DECL_OVERRIDE; + bool read(QImage *image) Q_DECL_OVERRIDE; + bool write(const QImage &image) Q_DECL_OVERRIDE; + + QByteArray name() const Q_DECL_OVERRIDE; + + static bool canRead(QIODevice *device); + + QVariant option(ImageOption option) const Q_DECL_OVERRIDE; + void setOption(ImageOption option, const QVariant &value) Q_DECL_OVERRIDE; + bool supportsOption(ImageOption option) const Q_DECL_OVERRIDE; + + int imageCount() const Q_DECL_OVERRIDE; + int loopCount() const Q_DECL_OVERRIDE; + int nextImageDelay() const Q_DECL_OVERRIDE; + int currentImageNumber() const Q_DECL_OVERRIDE; + +private: + bool imageIsComing() const; + QGIFFormat *gifFormat; + QString fileName; + mutable QByteArray buffer; + mutable QImage lastImage; + + mutable int nextDelay; + mutable int loopCnt; + int frameNumber; + mutable QVector<QSize> imageSizes; + mutable bool scanIsCached; +}; + +QT_END_NAMESPACE + +#endif // QGIFHANDLER_P_H |