Python FigureCanvasAgg.draw方法代码示例

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
 def copy_from_bbox(self, *args):
     """
     If a draw() has been called but the update() has not
     occurred, draw into the agg canvas before copying.
     """
     if self.replot:
         FigureCanvasAgg.draw(self)
         self.replot = False
     return FigureCanvasAgg.copy_from_bbox(self, *args)

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
    def draw(self, repaint=True):
        """
        Render the figure using agg.
        """
        DEBUG_MSG("draw()", 1, self)
        FigureCanvasAgg.draw(self)

        self.bitmap = _convert_agg_to_wx_bitmap(self.get_renderer(), None)
        if repaint:
            self.gui_repaint()

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
 def draw( self ):
     """
     Draw the figure with Agg, and queue a request
     for a Qt draw.
     """
     # The Agg draw is done here; delaying it until the paintEvent
     # causes problems with code that uses the result of the
     # draw() to update plot elements.
     FigureCanvasAgg.draw(self)
     self.update()

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
    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()
        # Added following line to improve realtime pan/zoom on windows:
        QtGui.qApp.processEvents()

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
    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

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
    def _render_figure(self, pixmap, width, height):
        if DEBUG: print 'FigureCanvasGTKAgg.render_figure'
        FigureCanvasAgg.draw(self)
        if DEBUG: print 'FigureCanvasGTKAgg.render_figure pixmap', pixmap
        #agg_to_gtk_drawable(pixmap, self.renderer._renderer, None)

        buf = self.buffer_rgba(0,0)
        ren = self.get_renderer()
        w = int(ren.width)
        h = int(ren.height)
        pixbuf = gtk.gdk.pixbuf_new_from_data(
            buf, gtk.gdk.COLORSPACE_RGB,  True, 8, w, h, w*4)
        pixmap.draw_pixbuf(pixmap.new_gc(), pixbuf, 0, 0, 0, 0, w, h, gtk.gdk.RGB_DITHER_NONE, 0, 0)
        if DEBUG: print 'FigureCanvasGTKAgg.render_figure done'

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
    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.
        """
        p = QtGui.QPainter( self )

        # only replot data when needed
        if type(self.replot) is bool: # might be a bbox for blitting
            if (self.replot ):
                #stringBuffer = str( self.buffer_rgba(0,0) )
                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)
                self.pixmap = self.pixmap.fromImage(qImage)
            p.drawPixmap(QtCore.QPoint(0, 0), self.pixmap)

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

        # we are blitting here
        else:
            bbox = self.replot
            w, h = int(bbox.width), int(bbox.height)
            l, t = bbox.ll().x().get(), bbox.ur().y().get()
            reg = self.copy_from_bbox(bbox)
            stringBuffer = reg.to_string()
            qImage = QtGui.QImage(stringBuffer, w, h, QtGui.QImage.Format_ARGB32)
            self.pixmap = self.pixmap.fromImage(qImage)
            p.drawPixmap(QtCore.QPoint(l, self.renderer.height-t), self.pixmap)

        p.end()
        self.replot = False
        self.drawRect = False

# 需要导入模块: from backend_agg import FigureCanvasAgg [as 别名]
# 或者: from backend_agg.FigureCanvasAgg import draw [as 别名]
 def draw(self):
     FigureCanvasAgg.draw(self)