WidgetRenderer.hpp

//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2026 Bruno Van de Velde (vdv_b@tgui.eu)
//
// This software is provided 'as-is', without any express or implied warranty.
// In no event will the authors be held liable for any damages arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it freely,
// subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented;
//    you must not claim that you wrote the original software.
//    If you use this software in a product, an acknowledgment
//    in the product documentation would be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such,
//    and must not be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source distribution.
//
 
#ifndef TGUI_WIDGET_RENDERER_HPP
#define TGUI_WIDGET_RENDERER_HPP
 
#include <TGUI/Config.hpp>
 
#include <TGUI/Loading/DataIO.hpp>
#include <TGUI/ObjectConverter.hpp>
 
#include <map>
#include <unordered_set>

 
namespace tgui
{
    class Theme;
    class Widget;

    struct TGUI_API RendererData
    {
        RendererData() = default;
        RendererData(const RendererData& other);
        RendererData& operator=(const RendererData& other);
 
        [[nodiscard]] static std::shared_ptr<RendererData> create(const std::map<String, ObjectConverter>& init = {});

        [[nodiscard]] static std::shared_ptr<RendererData> createFromDataIONode(const DataIO::Node* rendererNode);
 
        std::map<String, ObjectConverter> propertyValuePairs;
        std::unordered_set<Widget*> observers;
        Theme* connectedTheme = nullptr;
        bool themePropertiesInherited = false;
        bool shared = true;
    };

    class TGUI_API WidgetRenderer
    {
    public:
        WidgetRenderer() = default;                            
        WidgetRenderer(const WidgetRenderer&);                 
        WidgetRenderer(WidgetRenderer&&) = default;            
        WidgetRenderer& operator=(const WidgetRenderer&);      
        WidgetRenderer& operator=(WidgetRenderer&&) = default; 

        WidgetRenderer(const std::shared_ptr<RendererData>& data)
        {
            setData(data);
        }

        virtual ~WidgetRenderer() = default;

        void setOpacity(float opacity);

        [[nodiscard]] float getOpacity() const;

        void setOpacityDisabled(float opacity);

        [[nodiscard]] float getOpacityDisabled() const;

        void setFont(const Font& font);

        [[nodiscard]] Font getFont() const;

        void setTextSize(unsigned int size);

        [[nodiscard]] unsigned int getTextSize() const;

        void setTransparentTexture(bool ignoreTransparentParts);

        [[nodiscard]] bool getTransparentTexture() const;

        void setProperty(const String& property, ObjectConverter&& value);

        [[nodiscard]] ObjectConverter getProperty(const String& property) const;

        [[nodiscard]] const std::map<String, ObjectConverter>& getPropertyValuePairs() const;

        void subscribe(Widget* widget);

        void unsubscribe(Widget* widget);

        void setData(std::shared_ptr<RendererData> data);

        [[nodiscard]] std::shared_ptr<RendererData> getData() const;

        [[nodiscard]] std::shared_ptr<RendererData> clone() const;

 
    protected:
        std::shared_ptr<RendererData> m_data = RendererData::create();
    };
} // namespace tgui
 
#endif // TGUI_WIDGETS_HPP