def stop_rasterizing(self):
"""
Exit "raster" mode. All of the drawing that was done since
the last start_rasterizing command will be copied to the
vector backend by calling draw_image.
If stop_rasterizing is called multiple times before
start_rasterizing is called, this method has no effect.
"""
self._rasterizing -= 1
if self._rasterizing == 0:
self._set_current_renderer(self._vector_renderer)
width, height = self._width * self.dpi, self._height * self.dpi
buffer, bounds = self._raster_renderer.tostring_rgba_minimized()
l, b, w, h = bounds
if w > 0 and h > 0:
image = frombuffer(buffer, w, h, True)
image.is_grayscale = False
image.flipud_out()
self._renderer.draw_image(
float(l)/self.dpi*72.,
(float(height) - b - h)/self.dpi*72.,
image, None)
self._raster_renderer = None
self._rasterizing = False
self.figure.set_dpi(72)
if self._bbox_inches_restore: # when tight bbox is used
r = process_figure_for_rasterizing(self.figure,
self._bbox_inches_restore,
mode="pdf")
self._bbox_inches_restore = r
def stop_rasterizing(self):
"""
Exit "raster" mode. All of the drawing that was done since
the last start_rasterizing command will be copied to the
vector backend by calling draw_image.
If stop_rasterizing is called multiple times before
start_rasterizing is called, this method has no effect.
"""
self._rasterizing -= 1
if self._rasterizing == 0:
self._set_current_renderer(self._vector_renderer)
width, height = self._width * self.dpi, self._height * self.dpi
buffer, bounds = self._raster_renderer.tostring_rgba_minimized()
l, b, w, h = bounds
if w > 0 and h > 0:
image = frombuffer(buffer, w, h, True)
image.is_grayscale = False
image.flipud_out()
self._renderer.draw_image(
int(float(l) / self.dpi * 72.),
int((float(height) - b - h) / self.dpi * 72.), image, None)
self._raster_renderer = None
self._rasterizing = False
# restore the figure dpi.
self.figure.set_dpi(72)
if self._bbox_inches_restore: # when tight bbox is used
r = process_figure_for_rasterizing(self.figure,
self._bbox_inches_restore,
mode="pdf")
self._bbox_inches_restore = r
def stop_rasterizing(self):
"""
Exit "raster" mode. All of the drawing that was done since
the last start_rasterizing command will be copied to the
vector backend by calling draw_image.
If stop_rasterizing is called multiple times before
start_rasterizing is called, this method has no effect.
"""
self._rasterizing -= 1
if self._rasterizing == 0:
self._set_current_renderer(self._vector_renderer)
width, height = self._width * self.dpi, self._height * self.dpi
buffer, bounds = self._raster_renderer.tostring_rgba_minimized()
l, b, w, h = bounds
if w > 0 and h > 0:
image = frombuffer(buffer, w, h, True)
image.is_grayscale = False
image.flipud_out()
gc = self._renderer.new_gc()
# TODO: If the mixedmode resolution differs from the figure's
# dpi, the image must be scaled (dpi->_figdpi). Not all
# backends support this.
self._renderer.draw_image(
gc,
float(l) / self.dpi * self._figdpi,
(float(height)-b-h) / self.dpi * self._figdpi,
image)
self._raster_renderer = None
self._rasterizing = False
# restore the figure dpi.
self.figure.set_dpi(self._figdpi)
if self._bbox_inches_restore: # when tight bbox is used
r = process_figure_for_rasterizing(self.figure,
self._bbox_inches_restore,
mode="pdf")
self._bbox_inches_restore = r
def stop_rasterizing(self):
"""
Exit "raster" mode. All of the drawing that was done since
the last start_rasterizing command will be copied to the
vector backend by calling draw_image.
If stop_rasterizing is called multiple times before
start_rasterizing is called, this method has no effect.
"""
self._rasterizing -= 1
if self._rasterizing == 0:
self._set_current_renderer(self._vector_renderer)
width, height = self._width * self.dpi, self._height * self.dpi
buffer, bounds = self._raster_renderer.tostring_rgba_minimized()
l, b, w, h = bounds
if w > 0 and h > 0:
image = frombuffer(buffer, w, h, True)
image.is_grayscale = False
image.flipud_out()
gc = self._renderer.new_gc()
# TODO: If the mixedmode resolution differs from the figure's
# dpi, the image must be scaled (dpi->_figdpi). Not all
# backends support this.
self._renderer.draw_image(
gc,
float(l) / self.dpi * self._figdpi,
(float(height)-b-h) / self.dpi * self._figdpi,
image)
self._raster_renderer = None
self._rasterizing = False
# restore the figure dpi.
self.figure.set_dpi(self._figdpi)
if self._bbox_inches_restore: # when tight bbox is used
r = process_figure_for_rasterizing(self.figure,
self._bbox_inches_restore,
self._figdpi)
self._bbox_inches_restore = r
def stop_rasterizing(self):
"""
Exit "raster" mode. All of the drawing that was done since
the last start_rasterizing command will be copied to the
vector backend by calling draw_image.
If stop_rasterizing is called multiple times before
start_rasterizing is called, this method has no effect.
"""
if self._rasterizing:
self._set_current_renderer(self._vector_renderer)
width, height = self._width * self._dpi, self._height * self._dpi
buffer, bounds = self._raster_renderer.tostring_rgba_minimized()
l, b, w, h = bounds
if w > 0 and h > 0:
image = frombuffer(buffer, w, h, True)
image.is_grayscale = False
self._renderer.draw_image(l, height - b - h, image, None)
self._raster_renderer = None
self._rasterizing = False
def stop_rasterizing(self):
"""
Exit "raster" mode. All of the drawing that was done since
the last start_rasterizing command will be copied to the
vector backend by calling draw_image.
If stop_rasterizing is called multiple times before
start_rasterizing is called, this method has no effect.
"""
if self._rasterizing:
self._set_current_renderer(self._vector_renderer)
width, height = self._width * self._dpi, self._height * self._dpi
buffer, bounds = self._raster_renderer.tostring_rgba_minimized()
l, b, w, h = bounds
if w > 0 and h > 0:
image = frombuffer(buffer, w, h, True)
image.is_grayscale = False
self._renderer.draw_image(l, height - b - h, image, None)
self._raster_renderer = None
self._rasterizing = False
def device_draw_image(self, img, rect):
"""
draw_image(img_gc, rect=(x,y,w,h))
Draws another gc into this one. If 'rect' is not provided, then
the image gc is drawn into this one, rooted at (0,0) and at full
pixel size. If 'rect' is provided, then the image is resized
into the (w,h) given and drawn into this GC at point (x,y).
img_gc is either a Numeric array (WxHx3 or WxHx4) or a GC from Kiva's
Agg backend (kiva.agg.GraphicsContextArray).
Requires the Python Imaging Library (PIL).
"""
from PIL import Image as PilImage
from matplotlib import _image
# We turn img into a PIL object, since that is what ReportLab
# requires. To do this, we first determine if the input image
# GC needs to be converted to RGBA/RGB. If so, we see if we can
# do it nicely (using convert_pixel_format), and if not, we do
# it brute-force using Agg.
if type(img) == type(array([])):
# Numeric array
converted_img = agg.GraphicsContextArray(img, pix_format='rgba32')
format = 'RGBA'
elif isinstance(img, agg.GraphicsContextArray):
if img.format().startswith('RGBA'):
format = 'RGBA'
elif img.format().startswith('RGB'):
format = 'RGB'
else:
converted_img = img.convert_pixel_format('rgba32', inplace=0)
format = 'RGBA'
# Should probably take this into account
# interp = img.get_image_interpolation()
else:
warnings.warn("Cannot render image of type %r into SVG context."
% type(img))
return
if rect == None:
rect = (0, 0, img.width(), img.height())
width, height = img.width(), img.height()
# converted_img now holds an Agg graphics context with the image
pil_img = PilImage.fromstring(format,
(converted_img.width(),
converted_img.height()),
converted_img.bmp_array.tostring())
left, top, width, height = rect
if width != img.width() or height != img.height():
# This is not strictly required.
pil_img = pil_img.resize((int(width), int(height)), PilImage.NEAREST)
pil_img = pil_img.transpose(PilImage.FLIP_TOP_BOTTOM)
# Fix for the SVG backend, which seems to flip x when a transform is provided.
if self._backend.flipy():
pil_img = pil_img.transpose(PilImage.FLIP_LEFT_RIGHT)
mpl_img = _image.frombuffer(pil_img.tostring(), width, height, True)
mpl_img.is_grayscale = False
gc = self._backend.new_gc()
if self.state.clipping_path:
gc.set_clip_path(self._get_transformed_clip_path())
transform = Affine2D.from_values(*affine.affine_params(self.get_ctm()))
self._backend.draw_image(gc, left, top, mpl_img,
dx=width, dy=height, transform=transform)
gc.restore()
def device_draw_image(self, img, rect):
"""
draw_image(img_gc, rect=(x,y,w,h))
Draws another gc into this one. If 'rect' is not provided, then
the image gc is drawn into this one, rooted at (0,0) and at full
pixel size. If 'rect' is provided, then the image is resized
into the (w,h) given and drawn into this GC at point (x,y).
img_gc is either a Numeric array (WxHx3 or WxHx4) or a GC from Kiva's
Agg backend (kiva.agg.GraphicsContextArray).
Requires the Python Imaging Library (PIL).
"""
from PIL import Image as PilImage
from matplotlib import _image
# We turn img into a PIL object, since that is what ReportLab
# requires. To do this, we first determine if the input image
# GC needs to be converted to RGBA/RGB. If so, we see if we can
# do it nicely (using convert_pixel_format), and if not, we do
# it brute-force using Agg.
if type(img) == type(array([])):
# Numeric array
converted_img = agg.GraphicsContextArray(img, pix_format='rgba32')
format = 'RGBA'
elif isinstance(img, agg.GraphicsContextArray):
if img.format().startswith('RGBA'):
format = 'RGBA'
elif img.format().startswith('RGB'):
format = 'RGB'
else:
converted_img = img.convert_pixel_format('rgba32', inplace=0)
format = 'RGBA'
# Should probably take this into account
# interp = img.get_image_interpolation()
else:
warnings.warn("Cannot render image of type %r into SVG context." %
type(img))
return
if rect == None:
rect = (0, 0, img.width(), img.height())
width, height = img.width(), img.height()
# converted_img now holds an Agg graphics context with the image
pil_img = PilImage.fromstring(
format, (converted_img.width(), converted_img.height()),
converted_img.bmp_array.tostring())
left, top, width, height = rect
if width != img.width() or height != img.height():
# This is not strictly required.
pil_img = pil_img.resize((int(width), int(height)),
PilImage.NEAREST)
pil_img = pil_img.transpose(PilImage.FLIP_TOP_BOTTOM)
# Fix for the SVG backend, which seems to flip x when a transform is provided.
if self._backend.flipy():
pil_img = pil_img.transpose(PilImage.FLIP_LEFT_RIGHT)
mpl_img = _image.frombuffer(pil_img.tostring(), width, height, True)
mpl_img.is_grayscale = False
gc = self._backend.new_gc()
if self.state.clipping_path:
gc.set_clip_path(self._get_transformed_clip_path())
transform = Affine2D.from_values(*affine.affine_params(self.get_ctm()))
self._backend.draw_image(gc,
left,
top,
mpl_img,
dx=width,
dy=height,
transform=transform)
gc.restore()
