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Cached sf::Text attributes

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Two optimizations:
- If a value remains the same, nothing happens
- Recompute geometry only before drawing and bound access, not after each set

Closes #413
This commit is contained in:
Jan Haller 2014-03-29 16:46:15 +01:00
parent 59e920cf10
commit 666da801a1
2 changed files with 58 additions and 32 deletions
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22
include/SFML/Graphics/Text.hpp
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@ -275,21 +275,25 @@ private :
virtual void draw(RenderTarget& target, RenderStates states) const;
////////////////////////////////////////////////////////////
/// \brief Update the text's geometry
/// \brief Make sure the text's geometry is updated
///
/// All the attributes related to rendering are cached, such
/// that the geometry is only updated when necessary.
///
////////////////////////////////////////////////////////////
void updateGeometry();
void ensureGeometryUpdate() const;
////////////////////////////////////////////////////////////
// Member data
////////////////////////////////////////////////////////////
String m_string; ///< String to display
const Font* m_font; ///< Font used to display the string
unsigned int m_characterSize; ///< Base size of characters, in pixels
Uint32 m_style; ///< Text style (see Style enum)
Color m_color; ///< Text color
VertexArray m_vertices; ///< Vertex array containing the text's geometry
FloatRect m_bounds; ///< Bounding rectangle of the text (in local coordinates)
String m_string; ///< String to display
const Font* m_font; ///< Font used to display the string
unsigned int m_characterSize; ///< Base size of characters, in pixels
Uint32 m_style; ///< Text style (see Style enum)
Color m_color; ///< Text color
mutable VertexArray m_vertices; ///< Vertex array containing the text's geometry
mutable FloatRect m_bounds; ///< Bounding rectangle of the text (in local coordinates)
mutable bool m_geometryNeedUpdate; ///< Does the geometry need to be recomputed?
};
} // namespace sf