FM / backends

/usr/lib64/python2.6/site-packages/matplotlib/backends/

/usr/lib64/python2.6/site-packages/matplotlib/backends

Name	Size	Mode	Actions
Matplotlib.nib/	-	0755	rm
backend_agg.py	13037	0644	edit dl rm
backend_agg.pyc	14578	0644	edit dl rm
backend_agg.pyo	13367	0644	edit dl rm
backend_cairo.py	16493	0644	edit dl rm
backend_cairo.pyc	18270	0644	edit dl rm
backend_cairo.pyo	18270	0644	edit dl rm
backend_cocoaagg.py	8988	0644	edit dl rm
backend_cocoaagg.pyc	11930	0644	edit dl rm
backend_cocoaagg.pyo	11930	0644	edit dl rm
backend_emf.py	22336	0644	edit dl rm
backend_emf.pyc	25220	0644	edit dl rm
backend_emf.pyo	25220	0644	edit dl rm
backend_fltkagg.py	20852	0644	edit dl rm
backend_fltkagg.pyc	26631	0644	edit dl rm
backend_fltkagg.pyo	26631	0644	edit dl rm
backend_gdk.py	15968	0644	edit dl rm
backend_gdk.pyc	17157	0644	edit dl rm
backend_gdk.pyo	17157	0644	edit dl rm
backend_gtk.py	40707	0644	edit dl rm
backend_gtk.pyc	45101	0644	edit dl rm
backend_gtk.pyo	45101	0644	edit dl rm
backend_gtkagg.py	4134	0644	edit dl rm
backend_gtkagg.pyc	5088	0644	edit dl rm
backend_gtkagg.pyo	5088	0644	edit dl rm
backend_gtkcairo.py	2079	0644	edit dl rm
backend_gtkcairo.pyc	3740	0644	edit dl rm
backend_gtkcairo.pyo	3740	0644	edit dl rm
backend_macosx.py	14644	0644	edit dl rm
backend_macosx.pyc	20536	0644	edit dl rm
backend_macosx.pyo	20439	0644	edit dl rm
backend_mixed.py	5166	0644	edit dl rm
backend_mixed.pyc	4844	0644	edit dl rm
backend_mixed.pyo	4773	0644	edit dl rm
backend_pdf.py	77716	0644	edit dl rm
backend_pdf.pyc	66626	0644	edit dl rm
backend_pdf.pyo	66508	0644	edit dl rm
backend_ps.py	51444	0644	edit dl rm
backend_ps.pyc	48055	0644	edit dl rm
backend_ps.pyo	48055	0644	edit dl rm
backend_qt.py	16846	0644	edit dl rm
backend_qt.pyc	21065	0644	edit dl rm
backend_qt.pyo	21065	0644	edit dl rm
backend_qt4.py	21006	0644	edit dl rm
backend_qt4.pyc	24697	0644	edit dl rm
backend_qt4.pyo	24697	0644	edit dl rm
backend_qt4agg.py	4799	0644	edit dl rm
backend_qt4agg.pyc	5883	0644	edit dl rm
backend_qt4agg.pyo	5883	0644	edit dl rm
backend_qtagg.py	4972	0644	edit dl rm
backend_qtagg.pyc	6014	0644	edit dl rm
backend_qtagg.pyo	6014	0644	edit dl rm
backend_svg.py	25951	0644	edit dl rm
backend_svg.pyc	24476	0644	edit dl rm
backend_svg.pyo	24368	0644	edit dl rm
backend_template.py	8806	0644	edit dl rm
backend_template.pyc	9385	0644	edit dl rm
backend_template.pyo	9385	0644	edit dl rm
backend_wx.py	78921	0644	edit dl rm
backend_wx.pyc	79007	0644	edit dl rm
backend_wx.pyo	78931	0644	edit dl rm
backend_wxagg.py	9099	0644	edit dl rm
backend_wxagg.pyc	9363	0644	edit dl rm
backend_wxagg.pyo	9363	0644	edit dl rm
_backend_agg.so	430792	0775	edit dl rm
_backend_gdk.so	8168	0775	edit dl rm
_gtkagg.so	143816	0775	edit dl rm
__init__.py	2225	0644	edit dl rm
__init__.pyc	2120	0644	edit dl rm
__init__.pyo	2120	0644	edit dl rm

Edit: /usr/lib64/python2.6/site-packages/matplotlib/backends/backend_qt4agg.py (4799B)

"""
Render to qt from agg
"""
from __future__ import division

import os, sys

import matplotlib
from matplotlib.figure import Figure

from backend_agg import FigureCanvasAgg
from backend_qt4 import QtCore, QtGui, FigureManagerQT, FigureCanvasQT,\
     show, draw_if_interactive, backend_version, \
     NavigationToolbar2QT

DEBUG = False

def new_figure_manager( num, *args, **kwargs ):
    """
    Create a new figure manager instance
    """
    if DEBUG: print 'backend_qtagg.new_figure_manager'
    FigureClass = kwargs.pop('FigureClass', Figure)
    thisFig = FigureClass( *args, **kwargs )
    canvas = FigureCanvasQTAgg( thisFig )
    return FigureManagerQT( canvas, num )

class NavigationToolbar2QTAgg(NavigationToolbar2QT):
    def _get_canvas(self, fig):
        return FigureCanvasQTAgg(fig)

class FigureManagerQTAgg(FigureManagerQT):
    def _get_toolbar(self, canvas, parent):
        # must be inited after the window, drawingArea and figure
        # attrs are set
        if matplotlib.rcParams['toolbar']=='classic':
            print "Classic toolbar is not supported"
        elif matplotlib.rcParams['toolbar']=='toolbar2':
            toolbar = NavigationToolbar2QTAgg(canvas, parent)
        else:
            toolbar = None
        return toolbar

class FigureCanvasQTAgg( FigureCanvasQT, FigureCanvasAgg ):
    """
    The canvas the figure renders into.  Calls the draw and print fig
    methods, creates the renderers, etc...

Public attribute

figure - A Figure instance
   """

def __init__( self, figure ):
        if DEBUG: print 'FigureCanvasQtAgg: ', figure
        FigureCanvasQT.__init__( self, figure )
        FigureCanvasAgg.__init__( self, figure )
        self.drawRect = False
        self.rect = []
        self.replot = True
        self.setAttribute(QtCore.Qt.WA_OpaquePaintEvent)

def drawRectangle( self, rect ):
        self.rect = rect
        self.drawRect = True
        self.repaint( )

def paintEvent( self, e ):
        """
        Draw to the Agg backend and then copy the image to the qt.drawable.
        In Qt, all drawing should be done inside of here when a widget is
        shown onscreen.
        """

#FigureCanvasQT.paintEvent( self, e )
        if DEBUG: print 'FigureCanvasQtAgg.paintEvent: ', self, \
           self.get_width_height()

# only replot data when needed
        if type(self.replot) is bool: # might be a bbox for blitting
            if self.replot:
                FigureCanvasAgg.draw(self)

# matplotlib is in rgba byte order.  QImage wants to put the bytes
            # into argb format and is in a 4 byte unsigned int.  Little endian
            # system is LSB first and expects the bytes in reverse order
            # (bgra).
            if QtCore.QSysInfo.ByteOrder == QtCore.QSysInfo.LittleEndian:
                stringBuffer = self.renderer._renderer.tostring_bgra()
            else:
                stringBuffer = self.renderer._renderer.tostring_argb()

qImage = QtGui.QImage(stringBuffer, self.renderer.width,
                                  self.renderer.height,
                                  QtGui.QImage.Format_ARGB32)
            p = QtGui.QPainter(self)
            p.drawPixmap(QtCore.QPoint(0, 0), QtGui.QPixmap.fromImage(qImage))

# draw the zoom rectangle to the QPainter
            if self.drawRect:
                p.setPen( QtGui.QPen( QtCore.Qt.black, 1, QtCore.Qt.DotLine ) )
                p.drawRect( self.rect[0], self.rect[1], self.rect[2], self.rect[3] )

p.end()
        # we are blitting here
        else:
            bbox = self.replot
            l, b, r, t = bbox.extents
            w = int(r) - int(l)
            h = int(t) - int(b)
            t = int(b) + h
            reg = self.copy_from_bbox(bbox)
            stringBuffer = reg.to_string_argb()
            qImage = QtGui.QImage(stringBuffer, w, h, QtGui.QImage.Format_ARGB32)
            pixmap = QtGui.QPixmap.fromImage(qImage)
            p = QtGui.QPainter( self )
            p.drawPixmap(QtCore.QPoint(l, self.renderer.height-t), pixmap)
            p.end()
        self.replot = False
        self.drawRect = False

def draw( self ):
        """
        Draw the figure when xwindows is ready for the update
        """

if DEBUG: print "FigureCanvasQtAgg.draw", self
        self.replot = True
        FigureCanvasAgg.draw(self)
        self.update()

def blit(self, bbox=None):
        """
        Blit the region in bbox
        """

self.replot = bbox
        l, b, w, h = bbox.bounds
        t = b + h
        self.update(l, self.renderer.height-t, w, h)

def print_figure(self, *args, **kwargs):
        FigureCanvasAgg.print_figure(self, *args, **kwargs)
        self.draw()

cmd: