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enthought/enable/qt4/cairo.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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from enthought.qt import QtCore, QtGui

 

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from enthought.kiva.cairo import CompiledPath, GraphicsContext, font_metrics_provider

 

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from base_window import BaseWindow

 

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from scrollbar import NativeScrollBar

 

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class Window(BaseWindow):

 

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    def _create_gc(self, size, pix_format="bgra32"):

 

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        gc = GraphicsContext((size[0]+1, size[1]+1))

 

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        gc.translate_ctm(0.5, 0.5)

 

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        return gc

 

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    def _window_paint(self, event):

 

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        if self.control is None:

 

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           return

 

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        # self._gc is an image context

 

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        w = self._gc.width()

 

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        h = self._gc.height()

 

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        data = self._gc.pixel_map.convert_to_argbarray()

 

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        image = QtGui.QImage(data, w, h, QtGui.QImage.Format_ARGB32)

 

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        rect = QtCore.QRect(0,0,w,h)

 

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        painter = QtGui.QPainter(self.control)

 

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        painter.drawImage(rect, image)

 

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# EOF

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