QtImageReader.h

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// Copyright (c) 2008-2019 OpenShot Studios, LLC
//
// SPDX-License-Identifier: LGPL-3.0-or-later
 
#ifndef OPENSHOT_QIMAGE_READER_H
#define OPENSHOT_QIMAGE_READER_H
 
#include <memory>
#include <string>
 
#include <QString>
#include <QSize>
 
#include "ReaderBase.h"
#include "Json.h"
 
#if USE_RESVG == 1
    // If defined and found in CMake, utilize the libresvg for parsing
    // SVG files and rasterizing them to QImages.
    #include "ResvgQt.h"
 
    #define RESVG_VERSION_MIN(a, b) (\
        RESVG_MAJOR_VERSION > a \
        || (RESVG_MAJOR_VERSION == a && RESVG_MINOR_VERSION >= b) \
    )
#else
    #define RESVG_VERSION_MIN(a, b) 0
#endif
 
class QImage;
 
#include <QImage>
#include <QSize>
#include <QString>
 
#include <QSize>
#include <QString>
 
class QImage;
 
namespace openshot
{
    // Forward decl
    class CacheBase;
    class Frame;

    class QtImageReader : public ReaderBase
    {
    private:
        QString path;
        std::shared_ptr<QImage> image;          
        std::shared_ptr<QImage> cached_image;   
        bool is_open;   
        QSize max_size; 
 
#if RESVG_VERSION_MIN(0, 11)
        ResvgOptions resvg_options;
#endif

        QSize load_svg_path(QString path);

        QSize calculate_max_size();
 
    public:
        QtImageReader(std::string path, bool inspect_reader=true);
 
        virtual ~QtImageReader();

        void Close() override;

        CacheBase* GetCache() override { return NULL; };

        std::shared_ptr<Frame> GetFrame(int64_t requested_frame) override;

        bool IsOpen() override { return is_open; };

        std::string Name() override { return "QtImageReader"; };
 
        // Get and Set JSON methods
        std::string Json() const override; 
        void SetJson(const std::string value) override; 
        Json::Value JsonValue() const override; 
        void SetJsonValue(const Json::Value root) override; 

        void Open() override;
    };
 
}
 
#endif