Module enthought.​kiva.​backend_gl

Variables

• Canvas

  Canvas = None
  
  

• CanvasWindow

  CanvasWindow = None
  
  

• GlobalFontCache

  Use a singleton for the font cache

  GlobalFontCache = MRU()
  
  

• GlobalTextCache

  Because Pyglet 1.1 uses persistent Label objects to efficiently lay out and render text, we cache these globally to minimize the creation time. An MRU is not really the right structure to use here, though. (We typically expect that the same numbers of labels will be rendered.)

  GlobalTextCache = MRU()
  
  

Classes

• ArrayImage - pyglet ImageData made from numpy arrays
• GraphicsContext
• MRU

Function summary

• font_metrics_provider()
• get_dpi()
• GetFont(font)
• GetLabel(text, pyglet_font)
• image_as_array(img)

Functions

• font_metrics_provider()
• get_dpi()

  Returns the appropriate DPI setting for the system

• GetFont(font)

  Returns a Pylget Font object for the given Agg or Kiva font

• GetLabel(text, pyglet_font)

  Returns a Pyglet Label object for the given text and font

• image_as_array(img)

  Adapt an image object into a numpy array.

  Typically, this is used to adapt an agg GraphicsContextArray which has been used for image storage in Kiva applications.

Imported Names

© 2002-2008 Enthought, Inc.