GuiSDL.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2022 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_BACKEND_GUI_SDL_HPP
#define TGUI_BACKEND_GUI_SDL_HPP
 
 
#include <TGUI/GuiBase.hpp>
 
#include <SDL.h>
#include <SDL_touch.h>
 
 
namespace tgui
{
    class BackendRenderTargetSDL;
 
    class TGUI_API GuiSDL : public GuiBase
    {
    public:
 
        GuiSDL();
 
 
        GuiSDL(SDL_Window* window);
 
 
        void setWindow(SDL_Window* window);
 
 
        bool handleEvent(const SDL_Event& event);
        using GuiBase::handleEvent;
 
 
        void draw() override;
 
 
        void mainLoop() override;
 
 
        bool convertEvent(const SDL_Event& eventSDL, Event& eventTGUI);
 
 
    protected:
 
        // Function that is called when constructing the Gui
        void init() override;
 
 
        // Updates the view and changes the size of the root container when needed
        void updateContainerSize() override;
 
 
    protected:
 
        std::shared_ptr<BackendRenderTargetSDL> m_renderTarget = nullptr;
 
        Vector2i m_windowSize;
 
        bool m_touchFirstFingerDown = false;
        SDL_FingerID m_touchFirstFingerId = 0;      // Only valid if m_touchFirstFingerDown is true
        SDL_TouchID  m_touchFirstFingerTouchId = 0; // Only valid if m_touchFirstFingerDown is true
 
    };
}
 
 
#endif // TGUI_BACKEND_GUI_SDL_HPP