WidgetRenderer.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2020 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/ObjectConverter.hpp>
#include <TGUI/Loading/DataIO.hpp>
 
 
namespace tgui
{
    struct RendererData
    {
        RendererData() = default;
 
        static std::shared_ptr<RendererData> create(const std::map<std::string, ObjectConverter>& init = {})
        {
            auto data = std::make_shared<RendererData>();
            data->propertyValuePairs = init;
            return data;
        }
 
        static std::shared_ptr<RendererData> createFromDataIONode(const DataIO::Node* rendererNode)
        {
            auto rendererData = std::make_shared<RendererData>();
            rendererData->shared = false;
 
            for (const auto& pair : rendererNode->propertyValuePairs)
                rendererData->propertyValuePairs[pair.first] = ObjectConverter(pair.second->value); // Did not compile with VS2015 Update 2 when using braces
 
            for (const auto& nestedProperty : rendererNode->children)
            {
                std::stringstream ss;
                DataIO::emit(nestedProperty, ss);
                rendererData->propertyValuePairs[toLower(nestedProperty->name)] = {sf::String{"{\n" + ss.str() + "}"}};
            }
 
            return rendererData;
        };
 
        std::map<std::string, ObjectConverter> propertyValuePairs;
        std::map<const void*, std::function<void(const std::string& property)>> observers;
        bool shared = true;
    };
 
 
    class TGUI_API WidgetRenderer
    {
    public:
 
        WidgetRenderer() = default;
 
 
        WidgetRenderer(const std::shared_ptr<RendererData>& data)
        {
            setData(data);
        }
 
 
        virtual ~WidgetRenderer() = default;
 
 
        void setOpacity(float opacity);
 
 
        float getOpacity() const;
 
 
        void setOpacityDisabled(float opacity);
 
 
        float getOpacityDisabled() const;
 
 
        void setFont(Font font);
 
 
        Font getFont() const;
 
 
        void setTransparentTexture(bool ignoreTransparentParts);
 
 
        bool getTransparentTexture() const;
 
 
        void setProperty(const std::string& property, ObjectConverter&& value);
 
 
        ObjectConverter getProperty(const std::string& property) const;
 
 
        const std::map<std::string, ObjectConverter>& getPropertyValuePairs() const;
 
 
        void subscribe(const void* id, const std::function<void(const std::string& property)>& function);
 
 
        void unsubscribe(const void* id);
 
 
        void setData(const std::shared_ptr<RendererData>& data);
 
 
        std::shared_ptr<RendererData> getData() const;
 
 
        std::shared_ptr<RendererData> clone() const;
 
 
    protected:
 
        std::shared_ptr<RendererData> m_data = RendererData::create();
 
 
    };
 
}
 
 
#endif // TGUI_WIDGETS_HPP