SVGIconManager.h

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#pragma once
#include "DLLInfo.h"
#include "Widgets/Headers/QTIconManager.h"
#include "Base/Headers/Pointer.hpp"
#include "Base/Headers/Buffer.hpp"
#include "Base/Headers/Pointer.hpp"
#include <QTransform>
#include <QIconEngine>
class QSvgRenderer;
namespace NDEVR
{
    /**--------------------------------------------------------------------------------------------------
    \brief Stores a specific renderer and transform for SVG rendering.
    **/
    struct IconEngineItem
    {
        IconEngineItem(const QTransform& transform, QSvgRenderer* render)
            : transform(transform)
            , renderer(render)
        {}
        QTransform transform;
        QSvgRenderer* renderer;
    };
    /**--------------------------------------------------------------------------------------------------
    \brief A QIconEngine used to render SVG icons
    **/
    class NDEVR_IMAGES_API NDEVRSVGIconEngine : public QIconEngine
    {
    public:
        NDEVRSVGIconEngine(const String& icon, const IconThemeSettings& theme, QIcon::Mode mode = QIcon::Mode::Normal);
        NDEVRSVGIconEngine(const Buffer<IconEngineItem>& renderers, const String& icon, const IconThemeSettings& theme, QIcon::Mode mode = QIcon::Mode::Normal);
        ~NDEVRSVGIconEngine();
        //void setIconTheme(const IconThemeSettings theme);
        virtual void paint(QPainter* painter, const QRect& rect, QIcon::Mode mode, QIcon::State state) override;
        QSize actualSize(const QSize& size, QIcon::Mode mode, QIcon::State state) override;
        virtual QPixmap pixmap(const QSize& size, QIcon::Mode mode, QIcon::State state) override;
        QSize defaultSize();
        virtual QIconEngine* clone(void) const override;
 
    protected:
        void createSVGRenderer(const QSize& size);
    public:
        Buffer<IconEngineItem> m_renderers;
        Dictionary<QIcon::Mode, QPixmap> m_cached_pixmap;
        IconThemeSettings m_icon_theme;
        String m_icon;
        QIcon::Mode m_override_mode;
        mutable QSize m_default_size;
    };
    /**--------------------------------------------------------------------------------------------------
    \brief Allows the NDEVR engine to process and display SVG icons within the UI.
    **/
    class SVGIconEngine : public NDEVRIconEngine
    {
    public:
        SVGIconEngine();
        QIcon createIcon(const String& icon, const IconThemeSettings& theme, QIcon::Mode mode = QIcon::Mode::Normal) final override;
        bool canProcess(const String& icon, const IconThemeSettings& theme, QIcon::Mode mode) const final override;
    private:
        UUID m_id;
    };
}