Texture.hpp

 
//
// TGUI - Texus' Graphical User Interface
// Copyright (C) 2012-2023 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_TEXTURE_HPP
#define TGUI_TEXTURE_HPP
 
 
#include <TGUI/TextureData.hpp>
#include <TGUI/Vector2.hpp>
#include <TGUI/String.hpp>
#include <TGUI/Global.hpp>
#include <TGUI/Color.hpp>
#include <TGUI/Rect.hpp>
 
#if !TGUI_EXPERIMENTAL_USE_STD_MODULE
 #include <functional>
#endif
 
#if TGUI_HAS_RENDERER_BACKEND_SFML_GRAPHICS && !TGUI_BUILD_AS_CXX_MODULE
 namespace sf
 {
 class Texture;
 class Shader;
 }
#endif
 
 
TGUI_MODULE_EXPORT namespace tgui
{
 class TGUI_API Texture
 {
 public:
 
 using CallbackFunc = std::function<void(std::shared_ptr<TextureData>)>;
 using BackendTextureLoaderFunc = std::function<bool(BackendTexture&, const String&, bool smooth)>;
 using TextureLoaderFunc = std::function<std::shared_ptr<TextureData>(Texture&, const String&, bool smooth)>;
 
 Texture() = default;
 
 Texture(const char* id,
 const UIntRect& partRect = UIntRect(0, 0, 0, 0),
 const UIntRect& middlePart = UIntRect(0, 0, 0, 0),
 bool smooth = m_defaultSmooth)
 : Texture(String{id}, partRect, middlePart, smooth)
 {
 }
 
 Texture(const String& id,
 const UIntRect& partRect = UIntRect(0, 0, 0, 0),
 const UIntRect& middlePart = UIntRect(0, 0, 0, 0),
 bool smooth = m_defaultSmooth);
 
#if TGUI_HAS_RENDERER_BACKEND_SFML_GRAPHICS && !defined(TGUI_REMOVE_DEPRECATED_CODE)
 TGUI_DEPRECATED("Use Texture() and loadFromPixelData(texture.getSize(), texture.copyToImage().getPixelsPtr()) instead")
 Texture(const sf::Texture& texture,
 const UIntRect& partRect = UIntRect(0, 0, 0, 0),
 const UIntRect& middlePart = UIntRect(0, 0, 0, 0));
#endif
 Texture(const Texture&);
 
 Texture(Texture&&) noexcept;
 
 ~Texture();
 
 Texture& operator=(const Texture&);
 
 Texture& operator=(Texture&&) noexcept;
 
 void load(const String& id,
 const UIntRect& partRect = {},
 const UIntRect& middleRect = {},
 bool smooth = m_defaultSmooth);
 
#if TGUI_HAS_RENDERER_BACKEND_SFML_GRAPHICS && !defined(TGUI_REMOVE_DEPRECATED_CODE)
 TGUI_DEPRECATED("Use loadFromPixelData(texture.getSize(), texture.copyToImage().getPixelsPtr()) instead")
 void load(const sf::Texture& texture,
 const UIntRect& partRect = {},
 const UIntRect& middleRect = {});
#endif
 void loadFromMemory(const std::uint8_t* data, std::size_t dataSize, const UIntRect& partRect = {}, const UIntRect& middleRect = {}, bool smooth = m_defaultSmooth);
 
 void loadFromPixelData(Vector2u size, const std::uint8_t* pixels, const UIntRect& partRect = {}, const UIntRect& middleRect = {}, bool smooth = m_defaultSmooth);
 
 void loadFromBase64(CharStringView imageAsBase64, const UIntRect& partRect = {}, const UIntRect& middleRect = {}, bool smooth = m_defaultSmooth);
 
 TGUI_NODISCARD const String& getId() const;
 
 TGUI_NODISCARD std::shared_ptr<TextureData> getData() const;
 
 TGUI_NODISCARD Vector2u getImageSize() const;
 
 TGUI_NODISCARD UIntRect getPartRect() const;
 
 TGUI_NODISCARD bool isSmooth() const;
 
 void setColor(const Color& color);
 
 TGUI_NODISCARD const Color& getColor() const;
 
#if TGUI_HAS_RENDERER_BACKEND_SFML_GRAPHICS
 void setShader(sf::Shader* shader);
 
 
 TGUI_NODISCARD sf::Shader* getShader() const;
#endif
 void setMiddleRect(const UIntRect& middleRect);
 
 TGUI_NODISCARD UIntRect getMiddleRect() const;
 
 TGUI_NODISCARD bool isTransparentPixel(Vector2u pos) const;
 
 void setCopyCallback(const CallbackFunc& func);
 
 void setDestructCallback(const CallbackFunc& func);
 
 TGUI_NODISCARD bool operator==(const Texture& right) const;
 
 TGUI_NODISCARD bool operator!=(const Texture& right) const;
 
 static void setDefaultSmooth(bool smooth);
 
 TGUI_NODISCARD static bool getDefaultSmooth();
 
 static void setBackendTextureLoader(const BackendTextureLoaderFunc& func);
 
 TGUI_NODISCARD static const BackendTextureLoaderFunc& getBackendTextureLoader();
 
 static void setTextureLoader(const TextureLoaderFunc& func);
 
 TGUI_NODISCARD static const TextureLoaderFunc& getTextureLoader();
 
 private:
 
 void setTextureData(std::shared_ptr<TextureData> data, const UIntRect& partRect, const UIntRect& middleRect);
 
 private:
 
#if TGUI_HAS_RENDERER_BACKEND_SFML_GRAPHICS
 sf::Shader* m_shader = nullptr;
#endif
 
 std::shared_ptr<TextureData> m_data = nullptr;
 Color m_color = Color::White;
 
 UIntRect m_partRect;
 UIntRect m_middleRect;
 String m_id;
 
 CallbackFunc m_copyCallback;
 CallbackFunc m_destructCallback;
 
 static bool m_defaultSmooth;
 
 static TextureLoaderFunc m_textureLoader;
 static BackendTextureLoaderFunc m_backendTextureLoader;
 };
 
}
 
 
#endif // TGUI_TEXTURE_HPP