Method Draw

libs/drape_frontend/text_shape.cpp:235–282

}

void TextShape::Draw(ref_ptr<dp::GraphicsContext> context, ref_ptr<dp::Batcher> batcher,
                     ref_ptr<dp::TextureManager> textures) const
{
  auto const & titleDecl = m_params.m_titleDecl;

  ASSERT(!titleDecl.m_primaryText.empty(), ());
  StraightTextLayout primaryLayout(titleDecl.m_primaryText, titleDecl.m_primaryTextFont.m_size, textures,
                                   titleDecl.m_anchor, titleDecl.m_forceNoWrap, titleDecl.m_primaryTextLanguageIndex);

  if (m_params.m_limitedText)
  {
    if (auto const y = primaryLayout.GetPixelSize().y; y >= m_params.m_limits.y)
    {
      float const newFontSize = titleDecl.m_primaryTextFont.m_size * m_params.m_limits.y / y;
      primaryLayout = StraightTextLayout(titleDecl.m_primaryText, newFontSize, textures, titleDecl.m_anchor,
                                         titleDecl.m_forceNoWrap, titleDecl.m_primaryTextLanguageIndex);
    }
  }

  glsl::vec2 primaryOffset;
  glsl::vec2 secondaryOffset;
  if (titleDecl.m_secondaryText.empty())
  {
    CalculateTextOffsets(titleDecl, primaryLayout.GetPixelSize(), m2::PointF{0.f, 0.f}, primaryOffset, secondaryOffset);
    primaryOffset += glsl::vec2{m_symbolOffset.x, m_symbolOffset.y};
  }
  else
  {
    StraightTextLayout secondaryLayout{
        titleDecl.m_secondaryText, titleDecl.m_secondaryTextFont.m_size,  textures, titleDecl.m_anchor,
        titleDecl.m_forceNoWrap,   titleDecl.m_secondaryTextLanguageIndex};

    if (secondaryLayout.GetGlyphCount() > 0)
    {
      CalculateTextOffsets(titleDecl, primaryLayout.GetPixelSize(), secondaryLayout.GetPixelSize(), primaryOffset,
                           secondaryOffset);
      secondaryOffset += glsl::vec2(m_symbolOffset.x, m_symbolOffset.y);
      DrawSubString(context, secondaryLayout, titleDecl.m_secondaryTextFont, secondaryOffset, batcher, textures,
                    false /* isPrimary */, titleDecl.m_secondaryOptional);
    }
  }

  // The order of drawing secondary and primary texts has been changed after a minor refactoring for better performance.
  // If there are any issues caused by a swapped order, it should be changed back.
  if (primaryLayout.GetGlyphCount() > 0)
    DrawSubString(context, primaryLayout, titleDecl.m_primaryTextFont, primaryOffset, batcher, textures,
                  true /* isPrimary */, titleDecl.m_primaryOptional);
}

void TextShape::DrawSubString(ref_ptr<dp::GraphicsContext> context, StraightTextLayout & layout,
                              dp::FontDecl const & font, glm::vec2 const & baseOffset, ref_ptr<dp::Batcher> batcher,