Python Figure.draw方法代码示例

# 需要导入模块: from matplotlib.figure import Figure [as 别名]
# 或者: from matplotlib.figure.Figure import draw [as 别名]
def _draw_unsampled_image(self, renderer, gc):
        """
        draw unsampled image. The renderer should support a draw_image method
        with scale parameter.
        """

        im, l, b, trans = self.make_image(renderer, unsampled=True)

        if im is None:
            return

        trans = Affine2D().scale(im.shape[1], im.shape[0]) + trans

        renderer.draw_image(gc, l, b, im, trans) 

# 需要导入模块: from matplotlib.figure import Figure [as 别名]
# 或者: from matplotlib.figure.Figure import draw [as 别名]
def draw(self, renderer, *args, **kwargs):
        # if not visible, declare victory and return
        if not self.get_visible():
            self.stale = False
            return

        # for empty images, there is nothing to draw!
        if self.get_array().size == 0:
            self.stale = False
            return

        # actually render the image.
        gc = renderer.new_gc()
        self._set_gc_clip(gc)
        gc.set_alpha(self.get_alpha())
        gc.set_url(self.get_url())
        gc.set_gid(self.get_gid())

        if (self._check_unsampled_image(renderer) and
                self.get_transform().is_affine):
            self._draw_unsampled_image(renderer, gc)
        else:
            im, l, b, trans = self.make_image(
                renderer, renderer.get_image_magnification())
            if im is not None:
                renderer.draw_image(gc, l, b, im)
        gc.restore()
        self.stale = False 

# 需要导入模块: from matplotlib.figure import Figure [as 别名]
# 或者: from matplotlib.figure.Figure import draw [as 别名]
def _draw_list_compositing_images(
        renderer, parent, artists, suppress_composite=None):
    """
    Draw a sorted list of artists, compositing images into a single
    image where possible.

    For internal matplotlib use only: It is here to reduce duplication
    between `Figure.draw` and `Axes.draw`, but otherwise should not be
    generally useful.
    """
    has_images = any(isinstance(x, _ImageBase) for x in artists)

    # override the renderer default if suppressComposite is not None
    not_composite = (suppress_composite if suppress_composite is not None
                     else renderer.option_image_nocomposite())

    if not_composite or not has_images:
        for a in artists:
            a.draw(renderer)
    else:
        # Composite any adjacent images together
        image_group = []
        mag = renderer.get_image_magnification()

        def flush_images():
            if len(image_group) == 1:
                image_group[0].draw(renderer)
            elif len(image_group) > 1:
                data, l, b = composite_images(image_group, renderer, mag)
                if data.size != 0:
                    gc = renderer.new_gc()
                    gc.set_clip_rectangle(parent.bbox)
                    gc.set_clip_path(parent.get_clip_path())
                    renderer.draw_image(gc, np.round(l), np.round(b), data)
                    gc.restore()
            del image_group[:]

        for a in artists:
            if isinstance(a, _ImageBase) and a.can_composite():
                image_group.append(a)
            else:
                flush_images()
                a.draw(renderer)
        flush_images()