GuiRender.h

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#pragma once
 
#include <vector>
#include <SFML/Graphics/Font.hpp>
#include <SFML/Graphics/View.hpp>
#include <SFML/Graphics/Text.hpp>
#include <SFML/Graphics/Drawable.hpp>
#include <SFML/Graphics/VertexArray.hpp>
#include <SFML/Graphics/Transformable.hpp>
 
#include "sgui/Core/Shapes.h"
#include "sgui/Render/DrawOptions.h"
#include "sgui/Render/TextureMeshes.h"
#include "sgui/Render/MeshFunctions.h"
#include "sgui/Render/ClippingLayers.h"
#include "sgui/Resources/TextureAtlas.h"
 
namespace sgui
{

class GuiRender : public sf::Drawable, public sf::Transformable
{
public:
  void setResources (sf::Texture& sprite);
  void updateView (const sf::View& newView);
  uint32_t setCurrentClippingLayer (const sf::FloatRect& mask);
  void setTextureAtlas (const TextureAtlas& atlas);
  void clear ();
  void draw (
      const sf::FloatRect& box,
      const WidgetDrawOptions& options = {});
  void draw (
      const std::string& text,
      const sf::Font& font,
      const TextDrawOptions& options = {});
  sf::Vector2f textSize (
      const std::string& text,
      const sf::Font& font,
      const uint32_t fontSize) const;
  void setTooltipMode ();
  void unsetTooltipMode ();
  sf::Vector2f textureSize (const std::string& texture) const;
public:
  ClippingLayers clipping;
private:
  void initializeClippingLayers ();
  void addThreeSlices (const sf::FloatRect& box, const std::string& widgetState, const bool horizontal = true, const float percentToDraw = 1.f);
  void addNineSlices (const sf::FloatRect& box, const std::string& widgetState);
  void appendMesh (Mesh&& mesh, const sf::FloatRect& box, const bool horizontal = true, const float percentToDraw = 1.f);
  void computeMeshFilling (Mesh& mesh, const float percentToDraw, const bool horizontal = true);
  void draw (sf::RenderTarget& target, sf::RenderStates states) const override;
  void drawLayer (sf::RenderTarget& target, sf::RenderStates states, uint32_t layer) const;
  std::string toString (const Widget widget) const;
  std::string toString (const ItemState state) const;
private:
  // define on which render we work
  bool mTooltipMode;
  std::vector <uint32_t> mWidgetLayers;
  std::vector <uint32_t> mTooltipLayers;
  // font and texture
  sf::Texture* mGuiTexture;
  // widget mesh
  std::vector <sf::VertexArray> mWidgets;
  std::vector <std::vector <sf::Text>> mTexts;
  TextureMeshes mTexturesUV;
};
 
} // namespace sgui