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Viewing changes to enthought/enable/qt4/gl.py

  • Committer: Bazaar Package Importer
  • Author(s): Varun Hiremath
  • Date: 2011-04-05 21:54:28 UTC
  • mfrom: (1.1.5 upstream)
  • mto: (8.2.1 sid)
  • mto: This revision was merged to the branch mainline in revision 10.
  • Revision ID: james.westby@ubuntu.com-20110405215428-1x2wtubz3ok2kxaq
Tags: upstream-3.4.1
Import upstream version 3.4.1

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enthought/enable/qt4/gl.py
 
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#------------------------------------------------------------------------------
 
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# Copyright (c) 2011, Enthought, Inc.
 
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# All rights reserved.
 
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#
 
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# This software is provided without warranty under the terms of the BSD
 
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# license included in enthought/LICENSE.txt and may be redistributed only
 
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# under the conditions described in the aforementioned license.  The license
 
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# is also available online at http://www.enthought.com/licenses/BSD.txt
 
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# Thanks for using Enthought open source!
 
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#------------------------------------------------------------------------------
 
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import pyglet
 
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pyglet.options['shadow_window'] = False
 
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from enthought.traits.api import Bool, Instance
 
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from enthought.kiva.gl import CompiledPath, GraphicsContext
 
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from base_window import BaseGLWindow
 
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from scrollbar import NativeScrollBar
 
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class Window(BaseGLWindow):
 
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    def _create_gc(self, size, pix_format=None):
 
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        """ Create a GraphicsContext instance.
 
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        """
 
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        from pyglet.gl import Context
 
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        gc = GraphicsContext((size[0]+1, size[1]+1))
 
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        self._pyglet_gl_context = Context()
 
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        gc.gl_init()
 
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        gc.translate_ctm(0.5, 0.5)
 
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        return gc
 
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    def _init_gc(self):
 
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        """ Gives the GC a chance to initialize itself before components perform layout
 
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        and draw.  This is called every time through the paint loop.
 
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        """
 
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        self._pyglet_gl_context.set_current()
 
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        self.control.makeCurrent()
 
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        super(Window, self)._init_gc()
 
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    def _paint(self, event=None):
 
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        """ Paint the contents of the window.
 
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        """
 
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        if self.control is None:
 
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            return
 
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        size = self._get_control_size()
 
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        self._size = tuple(size)
 
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        self._gc = self._create_gc(size)
 
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        self._init_gc()
 
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        if hasattr(self.component, "do_layout"):
 
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            self.component.do_layout()
 
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        self._gc.clear(self.bgcolor_)
 
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        self.component.draw(self._gc, view_bounds=(0, 0, size[0], size[1]))
 
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        self._update_region = []
 
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def font_metrics_provider():
 
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    from enthought.kiva.fonttools import Font
 
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    gc = GraphicsContext((1, 1))
 
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    gc.set_font(Font())
 
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    return gc
 
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# EOF