BackendTexture.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_BACKEND_TEXTURE_HPP
#define TGUI_BACKEND_TEXTURE_HPP
 
#include <TGUI/Font.hpp>
#include <TGUI/String.hpp>
 
#include <memory>

 
namespace tgui
{
    class TGUI_API BackendTexture
    {
    public:
        // Don't allow copying or moving, because we don't expect derived classes to handle it correctly
        BackendTexture(const BackendTexture&) = delete;
        BackendTexture(BackendTexture&&) = delete;
        BackendTexture& operator=(const BackendTexture&) = delete;
        BackendTexture& operator=(BackendTexture&&) = delete;

        BackendTexture() = default;

        virtual ~BackendTexture() = default;

        bool load(Vector2u size, std::unique_ptr<std::uint8_t[]> pixels, bool smooth);

        virtual bool loadTextureOnly(Vector2u size, const std::uint8_t* pixels, bool smooth);

        [[nodiscard]] Vector2u getSize() const;

        virtual void setSmooth(bool smooth);

        [[nodiscard]] bool isSmooth() const
        {
            return m_isSmooth;
        }

        [[nodiscard]] bool isTransparentPixel(Vector2u pixel) const;

        [[nodiscard]] const std::uint8_t* getPixels() const;

 
    protected:
        Vector2u m_imageSize;
        std::unique_ptr<std::uint8_t[]> m_pixels;
        bool m_isSmooth = true;
    };
} // namespace tgui
 
#endif // TGUI_BACKEND_TEXTURE_HPP