QskPainterCommand.h

/******************************************************************************
 * QSkinny - Copyright (C) The authors
 *           SPDX-License-Identifier: BSD-3-Clause
 *****************************************************************************/
 
#ifndef QSK_PAINTER_COMMAND_H
#define QSK_PAINTER_COMMAND_H
 
#include "QskGlobal.h"
 
#include <qimage.h>
#include <qpaintengine.h>
#include <qpainterpath.h>
#include <qpixmap.h>
 
class QSK_EXPORT QskPainterCommand
{
  public:
    enum Type : qint8
    {
        Invalid = -1,
 
        Path,
        Pixmap,
        Image,
 
        State
    };
 
    struct PixmapData
    {
        QRectF rect;
        QPixmap pixmap;
        QRectF subRect;
    };
 
    struct ImageData
    {
        QRectF rect;
        QImage image;
        QRectF subRect;
        Qt::ImageConversionFlags flags;
    };
 
    struct StateData
    {
        QPaintEngine::DirtyFlags flags;
 
        QPen pen;
        QBrush brush;
        QPointF brushOrigin;
        QBrush backgroundBrush;
        Qt::BGMode backgroundMode = Qt::TransparentMode;
        QFont font;
        QTransform transform;
 
        Qt::ClipOperation clipOperation = Qt::NoClip;
        QRegion clipRegion;
        QPainterPath clipPath;
        bool isClipEnabled = false;
 
        QPainter::RenderHints renderHints;
        QPainter::CompositionMode compositionMode = QPainter::CompositionMode_SourceOver;
        qreal opacity;
    };
 
    constexpr QskPainterCommand() noexcept;
    QskPainterCommand( const QskPainterCommand& );
 
    explicit QskPainterCommand( const QPainterPath& );
 
    QskPainterCommand( const QRectF& rect,
        const QPixmap&, const QRectF& subRect );
 
    QskPainterCommand( const QRectF& rect,
        const QImage&, const QRectF& subRect,
        Qt::ImageConversionFlags );
 
    explicit QskPainterCommand( const QskPainterCommand::StateData& data );
    explicit QskPainterCommand( const QPaintEngineState& );
 
    ~QskPainterCommand();
 
    QskPainterCommand& operator=( const QskPainterCommand& );
 
    bool operator==( const QskPainterCommand& other ) const noexcept;
    bool operator!=( const QskPainterCommand& other ) const noexcept;
 
    Type type() const noexcept;
 
    QPainterPath* path() noexcept;
    const QPainterPath* path() const noexcept;
 
    PixmapData* pixmapData() noexcept;
    const PixmapData* pixmapData() const noexcept;
 
    ImageData* imageData() noexcept;
    const ImageData* imageData() const noexcept;
 
    StateData* stateData() noexcept;
    const StateData* stateData() const noexcept;
 
  private:
    void copy( const QskPainterCommand& );
    void reset();
 
    Type m_type;
 
    union
    {
        QPainterPath* m_path;
        PixmapData* m_pixmapData;
        ImageData* m_imageData;
        StateData* m_stateData;
    };
};
 
constexpr inline QskPainterCommand::QskPainterCommand() noexcept
    : m_type( Invalid )
    , m_path( nullptr )
{
}
 
inline bool QskPainterCommand::operator!=( const QskPainterCommand& other ) const noexcept
{
    return !( *this == other );
}
 
inline QskPainterCommand::Type QskPainterCommand::type() const noexcept
{
    return m_type;
}
 
inline const QPainterPath* QskPainterCommand::path() const noexcept
{
    return m_path;
}
 
inline const QskPainterCommand::PixmapData*
QskPainterCommand::pixmapData() const noexcept
{
    return m_pixmapData;
}
 
inline const QskPainterCommand::ImageData*
QskPainterCommand::imageData() const noexcept
{
    return m_imageData;
}
 
inline const QskPainterCommand::StateData*
QskPainterCommand::stateData() const noexcept
{
    return m_stateData;
}
 
#endif