Theme.hpp

 
//
// TGUI - Texus's Graphical User Interface
// Copyright (C) 2012-2017 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_THEME_HPP
#define TGUI_THEME_HPP
 
 
#include <TGUI/Widget.hpp>
#include <TGUI/Loading/WidgetConverter.hpp>
#include <TGUI/Loading/ThemeLoader.hpp>
 
 
namespace tgui
{
    class TGUI_API BaseTheme : public std::enable_shared_from_this<BaseTheme>
    {
    public:
 
        virtual ~BaseTheme() = default;
 
 
        virtual void widgetAttached(Widget* widget);
 
 
        virtual void widgetDetached(Widget* widget);
 
 
        virtual WidgetConverter internalLoad(const std::string& primary, const std::string& secondary) = 0;
 
 
        virtual void initWidget(Widget* widget, std::string primary, std::string secondary) = 0;
 
 
        static void setConstructFunction(const std::string& type, const std::function<Widget::Ptr()>& constructor);
 
 
        static void setThemeLoader(const std::shared_ptr<BaseThemeLoader>& themeLoader);
 
 
    protected:
 
        // Calls the protected widget->reload(primary, secondary, force) function
        void widgetReload(Widget* widget, const std::string& primary = "", const std::string& secondary = "", bool force = false);
 
 
    protected:
        static std::map<std::string, std::function<Widget::Ptr()>> m_constructors; 
        static std::shared_ptr<BaseThemeLoader> m_themeLoader;  
    };
 
 
    class TGUI_API Theme : public BaseTheme
    {
    public:
 
        typedef std::shared_ptr<Theme> Ptr; 
 
 
        Theme(const std::string& filename = "");
 
 
        static Theme::Ptr create(const std::string& filename = "");
 
 
        WidgetConverter load(std::string className);
 
 
        void reload(const std::string& filename);
 
 
        void reload(std::string oldClassName, std::string newClassName);
 
 
        void reload(Widget::Ptr widget, std::string className);
 
 
        void setProperty(std::string className, const std::string& property, const std::string& value);
 
 
        void setProperty(std::string className, const std::string& property, ObjectConverter&& value);
 
 
        std::string getProperty(std::string className, std::string property) const;
 
 
        std::map<std::string, std::string> getPropertyValuePairs(std::string className) const;
 
 
        std::shared_ptr<Theme> clone() const;
 
 
        virtual void widgetDetached(Widget* widget) override;
 
 
        virtual WidgetConverter internalLoad(const std::string& filename, const std::string& className) override;
 
 
        virtual void initWidget(Widget* widget, std::string filename, std::string className) override;
 
 
    private:
        std::string m_filename;
        bool m_resourcePathLock = false;
        std::map<Widget*, std::string> m_widgets; // Map widget to class name
        std::map<std::string, std::string> m_widgetTypes; // Map class name to type
        std::map<std::string, std::map<std::string, std::string>> m_widgetProperties; // Map class name to property-value pairs
 
        friend class ThemeTest;
    };
 
}
 
 
#endif // TGUI_THEME_HPP