Class TextureManager

libs/drape/texture_manager.hpp:32–235

class HWTextureAllocator;

class TextureManager
{
public:
  class BaseRegion
  {
  public:
    BaseRegion();
    void SetResourceInfo(ref_ptr<Texture::ResourceInfo> info);
    void SetTexture(ref_ptr<Texture> texture);
    ref_ptr<Texture> GetTexture() const { return m_texture; }
    bool IsValid() const;

    m2::PointF GetPixelSize() const;
    float GetPixelHeight() const;
    m2::RectF const & GetTexRect() const;

  protected:
    ref_ptr<Texture::ResourceInfo> m_info;
    ref_ptr<Texture> m_texture;
  };

  class SymbolRegion : public BaseRegion
  {
  public:
    uint32_t GetTextureIndex() const { return m_textureIndex; }
    void SetTextureIndex(uint32_t index) { m_textureIndex = index; }

  private:
    uint32_t m_textureIndex = 0;
  };

  using GlyphRegion = BaseRegion;

  class StippleRegion : public BaseRegion
  {
  public:
    m2::PointU GetMaskPixelSize() const;
  };

  using ColorRegion = BaseRegion;

  struct Params
  {
    std::string m_resPostfix;
    double m_visualScale = 1.0;
    std::string m_colors;
    std::string m_patterns;
    GlyphManager::Params m_glyphMngParams;
    std::string m_arrowTexturePath;  // maybe empty if no custom texture
    bool m_arrowTextureUseDefaultResourceFolder = false;
  };

  TextureManager();
  void Release();

  void Init(ref_ptr<dp::GraphicsContext> context, Params const & params);
  void OnSwitchMapStyle(ref_ptr<dp::GraphicsContext> context);
  void OnVisualScaleChanged(ref_ptr<dp::GraphicsContext> context, Params const & params);