def draw_image(self, x, y, im, origin, bbox):
"""
Draw the Image instance into the current axes; x is the
distance in pixels from the left hand side of the canvas. y is
the distance from the origin. That is, if origin is upper, y
is the distance from top. If origin is lower, y is the
distance from bottom
"""
#print 'draw_image'
if bbox is not None:
l, b, w, h = bbox.get_bounds()
#rectangle = (int(l), self.height-int(b+h),
# int(w), int(h))
# set clip rect?
flipud = origin == 'lower'
rows, cols, s = im.as_str(flipud)
X = fromstring(s, UInt8)
X.shape = rows, cols, 4
pb = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,
has_alpha=1,
bits_per_sample=8,
width=cols,
height=rows)
try:
pa = pb.get_pixels_array()
except AttributeError:
pa = pb.pixel_array
except RuntimeError, exc: # pygtk was not compiled with Numeric Python support
print >> sys.stderr, 'Error:', exc
return
def draw_image(self, x, y, im, bbox):
# bbox - not currently used
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
if numx.which[0] == "numarray":
warnings.warn("draw_image() currently works for numpy, but not "
"numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo with Numeric support is required for "
"draw_image()")
return
im.flipud_out()
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = numx.fromstring(buf, numx.UInt8)
X.shape = rows, cols, 4
# function does not pass a 'gc' so use renderer.ctx
ctx = self.ctx
surface = cairo.ImageSurface.create_for_array(X)
ctx.set_source_surface(surface, x, y)
ctx.paint()
im.flipud_out()
def draw_image(self, x, y, im, origin, bbox):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
try: import cairo.numpy
except:
verbose.report_error("cairo.numpy module required for draw_image()")
return
# bbox - not currently used
flipud = origin=='lower' # not currently used
ctx = cairo.Context()
ctx.set_target_surface (self.surface)
ctx.set_matrix (self.matrix)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buf, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
try:
# works for numpy image, not a numarray image
surface = cairo.numpy.surface_create_for_array (X)
except TypeError, exc:
verbose.report_error("%s: %s" % (_fn_name(), exc))
return
def draw_image(self, x, y, im, origin, bbox):
if bbox != None:
l, b, w, h = bbox.get_bounds()
#rectangle = (int(l), self.height-int(b+h),
# int(w), int(h))
# set clip rect?
flipud = origin == 'lower'
rows, cols, s = im.as_str(flipud)
X = fromstring(s, UInt8)
X.shape = rows, cols, 4
pb = gtk.gdk.Pixbuf(
gtk.gdk.COLORSPACE_RGB,
#has_alpha=1, bits_per_sample=8,
has_alpha=True,
bits_per_sample=8,
width=cols,
height=rows)
try:
pa = pb.get_pixels_array()
except AttributeError:
pa = pb.pixel_array
except RuntimeError, exc: # pygtk was not compiled with Numeric Python support
verbose.report_error('Error: %s' % exc)
return
def draw_image(self, x, y, im, origin, bbox):
if bbox != None:
l, b, w, h = bbox.get_bounds()
# rectangle = (int(l), self.height-int(b+h),
# int(w), int(h))
# set clip rect?
flipud = origin == "lower"
rows, cols, image_str = im.as_str(flipud)
image_array = fromstring(image_str, UInt8)
image_array.shape = rows, cols, 4
pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, has_alpha=True, bits_per_sample=8, width=cols, height=rows)
array = pixbuf_get_pixels_array(pixbuf)
array[:, :, :] = image_array
gc = self.new_gc()
if flipud:
y = self.height - y - rows
try: # new in 2.2
# can use None instead of gc.gdkGC, if don't need clipping
self.gdkDrawable.draw_pixbuf(gc.gdkGC, pixbuf, 0, 0, int(x), int(y), cols, rows, gdk.RGB_DITHER_NONE, 0, 0)
except AttributeError:
# deprecated in 2.2
pixbuf.render_to_drawable(
self.gdkDrawable, gc.gdkGC, 0, 0, int(x), int(y), cols, rows, gdk.RGB_DITHER_NONE, 0, 0
)
def _rgb(self, im):
h, w, s = im.as_rgba_str()
rgba = fromstring(s, UInt8)
rgba.shape = (h, w, 4)
rgb = rgba[:, :, :3]
return h, w, rgb.tostring()
def _rgb(self, im):
h,w,s = im.as_rgba_str()
rgba = fromstring(s, UInt8)
rgba.shape = (h, w, 4)
rgb = rgba[:,:,:3]
return h, w, rgb.tostring()
def draw_image(self, x, y, im, bbox):
# bbox - not currently used
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
if numx.which[0] == "numarray":
warnings.warn("draw_image() currently works for numpy, but not "
"numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo with Numeric support is required for "
"draw_image()")
return
im.flipud_out()
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = numx.fromstring (buf, numx.UInt8)
X.shape = rows, cols, 4
# function does not pass a 'gc' so use renderer.ctx
ctx = self.ctx
surface = cairo.ImageSurface.create_for_array (X)
ctx.set_source_surface (surface, x, y)
ctx.paint()
im.flipud_out()
def load_hst_data():
"""reconstruct the numerix arrays from the data files"""
import matplotlib.numerix as n
#hst = n.fromfile('hst.dat',typecode=n.UInt8, shape=(812,592,3))/255.
str = open('data/hst.zdat').read()
dstr = zlib.decompress(str)
hst = n.fromstring(dstr, n.UInt8)
hst.shape = (812, 592, 3)
hst = hst/255.
str = open('data/chandra.dat').read()
chandra = n.fromstring(str, n.Int16)
chandra.shape = (812,592)
if sys.byteorder == 'little':
chandra.byteswapped()
# note that both HST and Chandra data are normalized to be between 0 and 1
return hst, chandra/16000.
def draw_image(self, x, y, im, origin, bbox):
# bbox - not currently used
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
if numx.which[0] == "numarray":
warnings.warn("draw_image() currently works for numpy, but not "
"numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo with Numeric support is required for "
"draw_image()")
return
#flipud = origin=='lower' # gtk method (uses RGBA)
#rows, cols, s = im.as_str(flipud)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = numx.fromstring (buf, numx.UInt8)
X.shape = rows, cols, 4
# function does not pass a 'gc' so we create our own context
ctx = cairo.Context (self.surface)
surface = cairo.ImageSurface.create_for_array (X)
ctx.set_source_surface (surface, x, y)
ctx.paint()
def draw_image(self, x, y, im, origin, bbox):
# bbox - not currently used
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
if numx.which[0] == "numarray":
warnings.warn("draw_image() currently works for numpy, but not "
"numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo with Numeric support is required for "
"draw_image()")
return
#flipud = origin=='lower' # gtk method (uses RGBA)
#rows, cols, s = im.as_str(flipud)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = numx.fromstring(buf, numx.UInt8)
X.shape = rows, cols, 4
# function does not pass a 'gc' so we create our own context
ctx = cairo.Context(self.surface)
surface = cairo.ImageSurface.create_for_array(X)
ctx.set_source_surface(surface, x, y)
ctx.paint()
def load_hst_data():
"""reconstruct the numerix arrays from the data files"""
import matplotlib.numerix as n
#hst = n.fromfile('hst.dat',typecode=n.UInt8, shape=(812,592,3))/255.
str = open('data/hst.zdat').read()
dstr = zlib.decompress(str)
hst = n.fromstring(dstr, n.UInt8)
hst.shape = (812, 592, 3)
hst = hst / 255.
str = open('data/chandra.dat').read()
chandra = n.fromstring(str, n.Int16)
chandra.shape = (812, 592)
if sys.byteorder == 'little':
chandra.byteswapped()
# note that both HST and Chandra data are normalized to be between 0 and 1
return hst, chandra / 16000.
def get_two_stock_data():
"""
load stock time and price data for two stocks The return values
(d1,p1,d2,p2) are the trade time (in days) and prices for stocks 1
and 2 (intc and aapl)
"""
ticker1, ticker2 = 'INTC', 'AAPL'
M1 = fromstring( file('data/%s.dat' % ticker1, 'rb').read(), 'd')
M1 = M1.resize( (M1.shape[0]/2,2) )
M2 = fromstring( file('data/%s.dat' % ticker2, 'rb').read(), 'd')
M2 = M2.resize( (M2.shape[0]/2,2) )
d1, p1 = M1[:,0], M1[:,1]
d2, p2 = M2[:,0], M2[:,1]
return (d1,p1,d2,p2)
def _gray(self, im, flipud, rc=0.3, gc=0.59, bc=0.11):
rgbat = im.as_str(flipud)
rgba = fromstring(rgbat[2], UInt8)
rgba.shape = (rgbat[0], rgbat[1], 4)
r = rgba[:, :, 0].astype(Float32)
g = rgba[:, :, 1].astype(Float32)
b = rgba[:, :, 2].astype(Float32)
gray = (r * rc + g * gc + b * bc).astype(UInt8)
return rgbat[0], rgbat[1], gray.tostring()
def _gray(self, im, flipud, rc=0.3, gc=0.59, bc=0.11):
rgbat = im.as_str(flipud)
rgba = fromstring(rgbat[2], UInt8)
rgba.shape = (rgbat[0], rgbat[1], 4)
r = rgba[:,:,0].astype(Float32)
g = rgba[:,:,1].astype(Float32)
b = rgba[:,:,2].astype(Float32)
gray = (r*rc + g*gc + b*bc).astype(UInt8)
return rgbat[0], rgbat[1], gray.tostring()
def _gray(self, im, rc=0.3, gc=0.59, bc=0.11):
rgbat = im.as_rgba_str()
rgba = fromstring(rgbat[2], UInt8)
rgba.shape = (rgbat[0], rgbat[1], 4)
rgba_f = rgba.astype(Float32)
r = rgba_f[:, :, 0]
g = rgba_f[:, :, 1]
b = rgba_f[:, :, 2]
gray = (r * rc + g * gc + b * bc).astype(UInt8)
return rgbat[0], rgbat[1], gray.tostring()
def _gray(self, im, rc=0.3, gc=0.59, bc=0.11):
rgbat = im.as_rgba_str()
rgba = fromstring(rgbat[2], UInt8)
rgba.shape = (rgbat[0], rgbat[1], 4)
rgba_f = rgba.astype(Float32)
r = rgba_f[:,:,0]
g = rgba_f[:,:,1]
b = rgba_f[:,:,2]
gray = (r*rc + g*gc + b*bc).astype(UInt8)
return rgbat[0], rgbat[1], gray.tostring()
def draw_image(self, x, y, im, origin, bbox):
"""
Draw the Image instance into the current axes; x is the
distance in pixels from the left hand side of the canvas. y is
the distance from the origin. That is, if origin is upper, y
is the distance from top. If origin is lower, y is the
distance from bottom
origin is 'upper' or 'lower'
bbox is a matplotlib.transforms.BBox instance for clipping, or
None
"""
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
try:
import cairo.numpy
except:
verbose.report_error(
"cairo.numpy module required for draw_image()")
return
# bbox - not used
flipud = origin == 'lower'
ctx = cairo.Context()
ctx.set_target_surface(self.surface)
ctx.set_matrix(self.matrix)
rows, cols, buffer = im.buffer_argb32(
) # ARGB32, but colors still wrong
X = fromstring(buffer, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
surface = cairo.numpy.surface_create_for_array(X)
# Alternative
#surface = cairo.surface_create_for_image(buffer, cairo.FORMAT_ARGB32, cols, rows) #, stride)
# error: TypeError: Cannot use string as modifiable buffer
ctx.translate(x, y)
ctx.show_surface(surface, cols, rows)
def _draw_mathtext(self, gc, x, y, s, prop, angle):
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
# mathtext using the gtk/gdk method
if numx.which[0] == "numarray":
warnings.warn("_draw_mathtext() currently works for numpy, but "
"not numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo with Numeric support is required for "
"_draw_mathtext()")
return
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(
s, self.dpi.get(), size)
if angle==90:
width, height = height, width
x -= width
y -= height
imw, imh, s = fonts[0].image_as_str()
N = imw*imh
# a numpixels by num fonts array
Xall = numx.zeros((N,len(fonts)), typecode=numx.UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, s = font.image_as_str()
Xall[:,i] = numx.fromstring(s, numx.UInt8)
# get the max alpha at each pixel
Xs = numx.mlab.max (Xall,1)
# convert it to it's proper shape
Xs.shape = imh, imw
pa = numx.zeros(shape=(imh,imw,4), typecode=numx.UInt8)
rgb = gc.get_rgb()
pa[:,:,0] = int(rgb[0]*255)
pa[:,:,1] = int(rgb[1]*255)
pa[:,:,2] = int(rgb[2]*255)
pa[:,:,3] = Xs
# works for numpy pa, not a numarray pa
surface = cairo.ImageSurface.create_for_array (pa)
gc.ctx.set_source_surface (surface, x, y)
gc.ctx.paint()
def _draw_mathtext(self, gc, x, y, s, prop, angle):
if _debug: print '%s.%s()' % (self.__class__.__name__, _fn_name())
# mathtext using the gtk/gdk method
if numx.which[0] == "numarray":
warnings.warn("_draw_mathtext() currently works for numpy, but "
"not numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo with Numeric support is required for "
"_draw_mathtext()")
return
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(s, self.dpi.get(), size)
if angle == 90:
width, height = height, width
x -= width
y -= height
imw, imh, s = fonts[0].image_as_str()
N = imw * imh
# a numpixels by num fonts array
Xall = numx.zeros((N, len(fonts)), typecode=numx.UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, s = font.image_as_str()
Xall[:, i] = numx.fromstring(s, numx.UInt8)
# get the max alpha at each pixel
Xs = numx.mlab.max(Xall, 1)
# convert it to it's proper shape
Xs.shape = imh, imw
pa = numx.zeros(shape=(imh, imw, 4), typecode=numx.UInt8)
rgb = gc.get_rgb()
pa[:, :, 0] = int(rgb[0] * 255)
pa[:, :, 1] = int(rgb[1] * 255)
pa[:, :, 2] = int(rgb[2] * 255)
pa[:, :, 3] = Xs
# works for numpy pa, not a numarray pa
surface = cairo.ImageSurface.create_for_array(pa)
gc.ctx.set_source_surface(surface, x, y)
gc.ctx.paint()
def _draw_mathtext(self, gc, x, y, s, prop, angle):
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(s, self.dpi.get(), size)
if angle == 90:
width, height = height, width
x -= width
y -= height
imw, imh, image_str = fonts[0].image_as_str()
N = imw * imh
# a numpixels by num fonts array
Xall = zeros((N, len(fonts)), typecode=UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, image_str = font.image_as_str()
Xall[:, i] = fromstring(image_str, UInt8)
# get the max alpha at each pixel
Xs = numerix.mlab.max(Xall, 1)
# convert it to it's proper shape
Xs.shape = imh, imw
pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,
has_alpha=True,
bits_per_sample=8,
width=imw,
height=imh)
array = pixbuf_get_pixels_array(pixbuf)
rgb = gc.get_rgb()
array[:, :, 0] = int(rgb[0] * 255)
array[:, :, 1] = int(rgb[1] * 255)
array[:, :, 2] = int(rgb[2] * 255)
array[:, :, 3] = Xs
try: # new in 2.2
# can use None instead of gc.gdkGC, if don't need clipping
self.gdkDrawable.draw_pixbuf(gc.gdkGC, pixbuf, 0, 0, int(x),
int(y), imw, imh, gdk.RGB_DITHER_NONE,
0, 0)
except AttributeError:
# deprecated in 2.2
pixbuf.render_to_drawable(self.gdkDrawable, gc.gdkGC, 0, 0, int(x),
int(y), imw, imh, gdk.RGB_DITHER_NONE, 0,
0)
def _draw_mathtext(self, gc, x, y, s, prop, angle):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
# mathtext using the gtk/gdk method
if numerix.which[0] == "numarray":
warnings.warn("_draw_mathtext() currently works for numpy, but not numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo.numpy module required for _draw_mathtext()")
return
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(
s, self.dpi.get(), size)
if angle==90:
width, height = height, width
x -= width
y -= height
imw, imh, s = fonts[0].image_as_str()
N = imw*imh
# a numpixels by num fonts array
Xall = zeros((N,len(fonts)), typecode=UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, s = font.image_as_str()
Xall[:,i] = fromstring(s, UInt8)
# get the max alpha at each pixel
Xs = numerix.mlab.max(Xall,1)
# convert it to it's proper shape
Xs.shape = imh, imw
pa = zeros(shape=(imh,imw,4), typecode=UInt8)
rgb = gc.get_rgb()
pa[:,:,0] = int(rgb[0]*255)
pa[:,:,1] = int(rgb[1]*255)
pa[:,:,2] = int(rgb[2]*255)
pa[:,:,3] = Xs
# works for numpy pa, not a numarray pa
surface = cairo.numpy.surface_create_for_array(pa)
gc.ctx.translate (x,y)
gc.ctx.show_surface (surface, imw, imh)
def draw_image(self, x, y, im, origin, bbox):
"""
Draw the Image instance into the current axes; x is the
distance in pixels from the left hand side of the canvas. y is
the distance from the origin. That is, if origin is upper, y
is the distance from top. If origin is lower, y is the
distance from bottom
origin is 'upper' or 'lower'
bbox is a matplotlib.transforms.BBox instance for clipping, or
None
"""
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
try: import cairo.numpy
except:
verbose.report_error("cairo.numpy module required for draw_image()")
return
# bbox - not used
flipud = origin=='lower'
ctx = cairo.Context()
ctx.set_target_surface (self.surface)
ctx.set_matrix (self.matrix)
rows, cols, buffer = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buffer, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
surface = cairo.numpy.surface_create_for_array (X)
# Alternative
#surface = cairo.surface_create_for_image(buffer, cairo.FORMAT_ARGB32, cols, rows) #, stride)
# error: TypeError: Cannot use string as modifiable buffer
ctx.translate (x,y)
ctx.show_surface (surface, cols, rows)
def _draw_mathtext(self, gc, x, y, s, prop, angle):
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(
s, self.dpi.get(), size)
if angle==90:
width, height = height, width
x -= width
y -= height
imw, imh, image_str = fonts[0].image_as_str()
N = imw*imh
# a numpixels by num fonts array
Xall = zeros((N,len(fonts)), typecode=UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, image_str = font.image_as_str()
Xall[:,i] = fromstring(image_str, UInt8)
# get the max alpha at each pixel
Xs = numerix.mlab.max(Xall,1)
# convert it to it's proper shape
Xs.shape = imh, imw
pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, has_alpha=True,
bits_per_sample=8, width=imw, height=imh)
array = pixbuf_get_pixels_array(pixbuf)
rgb = gc.get_rgb()
array[:,:,0]=int(rgb[0]*255)
array[:,:,1]=int(rgb[1]*255)
array[:,:,2]=int(rgb[2]*255)
array[:,:,3]=Xs
try: # new in 2.2
# can use None instead of gc.gdkGC, if don't need clipping
self.gdkDrawable.draw_pixbuf (gc.gdkGC, pixbuf, 0, 0,
int(x), int(y), imw, imh,
gdk.RGB_DITHER_NONE, 0, 0)
except AttributeError:
# deprecated in 2.2
pixbuf.render_to_drawable(self.gdkDrawable, gc.gdkGC, 0, 0,
int(x), int(y), imw, imh,
gdk.RGB_DITHER_NONE, 0, 0)
def draw_mathtext(self, gc, x, y, s, prop, angle):
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(s, self.dpi.get(), size)
if angle == 90:
width, height = height, width
x = int(x)
y = int(y)
rgb = gc.get_rgb()
#rgba = (rgb[0], rgb[1], rgb[2], gc.get_alpha())
imw, imh, s = fonts[0].image_as_str()
N = imw * imh
# a numpixels by num fonts array
Xall = zeros((N, len(fonts)), typecode=UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, s = font.image_as_str()
Xall[:, i] = fromstring(s, UInt8)
# get the max alpha at each pixel
Xs = numerix.max(Xall, 1)
# convert it to it's proper shape
Xs.shape = imh, imw
pb = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,
has_alpha=1,
bits_per_sample=8,
width=imw,
height=imh)
try:
pa = pb.get_pixels_array()
except AttributeError:
pa = pb.pixel_array
except RuntimeError, exc: # pygtk was not compiled with Numeric Python support
print >> sys.stderr, 'Error:', exc
return
def _draw_mathtext(self, gc, x, y, s, prop, angle):
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(s, self.dpi.get(), size)
if angle == 90:
width, height = height, width
x -= width
y -= height
imw, imh, s = fonts[0].image_as_str()
N = imw * imh
# a numpixels by num fonts array
Xall = zeros((N, len(fonts)), typecode=UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, s = font.image_as_str()
Xall[:, i] = fromstring(s, UInt8)
# get the max alpha at each pixel
Xs = numerix.max(Xall, 1)
# convert it to it's proper shape
Xs.shape = imh, imw
pb = gtk.gdk.Pixbuf(
gtk.gdk.COLORSPACE_RGB,
#has_alpha=1, bits_per_sample=8, width=imw, height=imh)
has_alpha=True,
bits_per_sample=8,
width=imw,
height=imh)
try:
pa = pb.get_pixels_array()
except AttributeError:
pa = pb.pixel_array
except RuntimeError, exc: # 'pygtk was not compiled with Numeric Python support'
verbose.report_error('mathtext not supported: %s' % exc)
return
def draw_image(self, x, y, im, origin, bbox):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
if numerix.which[0] == "numarray":
warnings.warn(
"draw_image() currently works for numpy, but not numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo.numpy module required for draw_image()")
return
# bbox - not currently used
flipud = origin == 'lower' # not currently used
ctx = cairo.Context()
ctx.set_target_surface(self.surface)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buf, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
# works for numpy X, not numarray X
surface = cairo.numpy.surface_create_for_array(X)
# Alternative
#surface = cairo.surface_create_for_image(buf, cairo.FORMAT_ARGB32, cols, rows) #, stride)
# error: TypeError: Cannot use string as modifiable buffer
ctx.translate(x, y)
ctx.show_surface(surface, cols, rows)
def draw_image(self, x, y, im, origin, bbox):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
if numerix.which[0] == "numarray":
warnings.warn("draw_image() currently works for numpy, but not numarray")
return
if not HAVE_CAIRO_NUMPY:
warnings.warn("cairo.numpy module required for draw_image()")
return
# bbox - not currently used
flipud = origin=='lower' # not currently used
ctx = cairo.Context()
ctx.set_target_surface (self.surface)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buf, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
# works for numpy X, not numarray X
surface = cairo.numpy.surface_create_for_array (X)
# Alternative
#surface = cairo.surface_create_for_image(buf, cairo.FORMAT_ARGB32, cols, rows) #, stride)
# error: TypeError: Cannot use string as modifiable buffer
ctx.translate (x,y)
ctx.show_surface (surface, cols, rows)
def draw_image(self, x, y, im, origin, bbox):
if bbox != None:
l, b, w, h = bbox.get_bounds()
# rectangle = (int(l), self.height-int(b+h),
# int(w), int(h))
# set clip rect?
flipud = origin == "lower"
rows, cols, s = im.as_str(flipud)
X = fromstring(s, UInt8)
X.shape = rows, cols, 4
pb = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB, has_alpha=1, bits_per_sample=8, width=cols, height=rows)
try:
pa = pb.get_pixels_array()
except AttributeError:
pa = pb.pixel_array
except RuntimeError, exc: # pygtk was not compiled with Numeric Python support
verbose.report_error("Error: %s" % exc)
return
def draw_image(self, x, y, im, origin, bbox):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
# works for numpy image, not a numarray image
try:
import cairo.numpy
except:
verbose.report_error(
"cairo.numpy module required for draw_image()")
return
# bbox - not currently used
flipud = origin == 'lower' # not currently used
ctx = cairo.Context()
ctx.set_target_surface(self.surface)
ctx.set_matrix(self.matrix)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buf, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
surface = cairo.numpy.surface_create_for_array(X)
# Alternative
#surface = cairo.surface_create_for_image(buf, cairo.FORMAT_ARGB32, cols, rows) #, stride)
# error: TypeError: Cannot use string as modifiable buffer
ctx.translate(x, y)
ctx.show_surface(surface, cols, rows)
def draw_image(self, x, y, im, bbox):
if bbox != None:
l, b, w, h = bbox.get_bounds()
#rectangle = (int(l), self.height-int(b+h),
# int(w), int(h))
# set clip rect?
im.flipud_out()
rows, cols, image_str = im.as_rgba_str()
image_array = fromstring(image_str, UInt8)
image_array.shape = rows, cols, 4
pixbuf = gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,
has_alpha=True,
bits_per_sample=8,
width=cols,
height=rows)
array = pixbuf_get_pixels_array(pixbuf)
array[:, :, :] = image_array
gc = self.new_gc()
y = self.height - y - rows
try: # new in 2.2
# can use None instead of gc.gdkGC, if don't need clipping
self.gdkDrawable.draw_pixbuf(gc.gdkGC, pixbuf, 0, 0, int(x),
int(y), cols, rows,
gdk.RGB_DITHER_NONE, 0, 0)
except AttributeError:
# deprecated in 2.2
pixbuf.render_to_drawable(self.gdkDrawable, gc.gdkGC, 0, 0, int(x),
int(y), cols, rows, gdk.RGB_DITHER_NONE,
0, 0)
# unflip
im.flipud_out()
def _draw_mathtext(self, gc, x, y, s, prop, angle):
size = prop.get_size_in_points()
width, height, fonts = math_parse_s_ft2font(
s, self.dpi.get(), size)
if angle==90:
width, height = height, width
x -= width
y -= height
imw, imh, s = fonts[0].image_as_str()
N = imw*imh
# a numpixels by num fonts array
Xall = zeros((N,len(fonts)), typecode=UInt8)
for i, font in enumerate(fonts):
if angle == 90:
font.horiz_image_to_vert_image() # <-- Rotate
imw, imh, s = font.image_as_str()
Xall[:,i] = fromstring(s, UInt8)
# get the max alpha at each pixel
Xs = numerix.mlab.max(Xall,1)
# convert it to it's proper shape
Xs.shape = imh, imw
pb=gtk.gdk.Pixbuf(gtk.gdk.COLORSPACE_RGB,
#has_alpha=1, bits_per_sample=8, width=imw, height=imh)
has_alpha=True, bits_per_sample=8, width=imw, height=imh)
try:
pa = pb.get_pixels_array()
except AttributeError:
pa = pb.pixel_array
except RuntimeError, exc: # 'pygtk was not compiled with Numeric Python support'
verbose.report_error('mathtext not supported: %s' % exc)
return
def draw_image(self, x, y, im, origin, bbox):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
# works for numpy image, not a numarray image
try: import cairo.numpy
except:
verbose.report_error("cairo.numpy module required for draw_image()")
return
# bbox - not currently used
flipud = origin=='lower' # not currently used
ctx = cairo.Context()
ctx.set_target_surface (self.surface)
ctx.set_matrix (self.matrix)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buf, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
surface = cairo.numpy.surface_create_for_array (X)
# Alternative
#surface = cairo.surface_create_for_image(buf, cairo.FORMAT_ARGB32, cols, rows) #, stride)
# error: TypeError: Cannot use string as modifiable buffer
ctx.translate (x,y)
ctx.show_surface (surface, cols, rows)
def draw_image(self, x, y, im, origin, bbox):
if DEBUG: print 'backend_cairo.RendererCairo.%s()' % _fn_name()
try:
import cairo.numpy
except:
verbose.report_error(
"cairo.numpy module required for draw_image()")
return
# bbox - not currently used
flipud = origin == 'lower' # not currently used
ctx = cairo.Context()
ctx.set_target_surface(self.surface)
ctx.set_matrix(self.matrix)
rows, cols, buf = im.buffer_argb32() # ARGB32, but colors still wrong
X = fromstring(buf, UInt8)
X.shape = rows, cols, 4
#print dir(im)
#print 'im.get_size()', im.get_size()
#print 'r,c', rows, cols
# GTK method
#rows, cols, s = im.as_str(flipud) # RGBA
#print 'r,c', rows, cols
#X = fromstring(s, UInt8)
#X.shape = rows, cols, 4
# ARGB32
try:
# works for numpy image, not a numarray image
surface = cairo.numpy.surface_create_for_array(X)
except TypeError, exc:
verbose.report_error("%s: %s" % (_fn_name(), exc))
return
def _rgb(self, im, flipud):
rgbat = im.as_str(flipud)
rgba = fromstring(rgbat[2], UInt8)
rgba.shape = (rgbat[0], rgbat[1], 4)
rgb = rgba[:, :, :3]
return rgbat[0], rgbat[1], rgb.tostring()
def _rgb(self, im, flipud):
rgbat = im.as_str(flipud)
rgba = fromstring(rgbat[2], UInt8)
rgba.shape = (rgbat[0], rgbat[1], 4)
rgb = rgba[:,:,:3]
return rgbat[0], rgbat[1], rgb.tostring()
