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elif ha == "right":
ax -= w
if va == "top":
ay -= h
elif va == "center":
ay -= h / 2
if mtext.get_rotation_mode() != "anchor":
# if not anchor mode, rotation is undone last
v_offset = np.dot(dir_vert, [(x - ax), (y - ay)])
ax = ax + v_offset * dir_vert[0]
ay = ay + v_offset * dir_vert[1]
x, y = ax, ay
x += self.widget.x
y += self.widget.y
if ismath:
self.draw_mathtext(gc, x, y, s, prop, angle)
else:
font = resource_find(prop.get_name() + ".ttf")
color = gc.get_rgb()
if font is None:
plot_text = CoreLabel(font_size=prop.get_size_in_points(), color=color)
else:
plot_text = CoreLabel(font_size=prop.get_size_in_points(),
font_name=prop.get_name(), color=color)
plot_text.text = six.text_type("{}".format(s))
if prop.get_style() == 'italic':
plot_text.italic = True
if self.weight_as_number(prop.get_weight()) > 500:
plot_text.bold = True
plot_text.refresh()
with self.widget.canvas:
if isinstance(angle, float):
PushMatrix()
Rotate(angle=angle, origin=(int(x), int(y)))
Rectangle(pos=(int(x), int(y)), texture=plot_text.texture,
size=plot_text.texture.size)
PopMatrix()
else:
Rectangle(pos=(int(x), int(y)), texture=plot_text.texture,
size=plot_text.texture.size)
def draw_mathtext(self, gc, x, y, s, prop, angle):
'''Draw the math text using matplotlib.mathtext. The position
x,y is given in Kivy coordinates.
'''
ftimage, depth = self.mathtext_parser.parse(s, self.dpi, prop)
w = ftimage.get_width()
h = ftimage.get_height()
texture = Texture.create(size=(w, h))
if _mpl_ge_1_5:
texture.blit_buffer(ftimage.as_rgba_str()[0][0], colorfmt='rgba',
bufferfmt='ubyte')
else:
texture.blit_buffer(ftimage.as_rgba_str(), colorfmt='rgba',
bufferfmt='ubyte')
texture.flip_vertical()
with self.widget.canvas:
Rectangle(texture=texture, pos=(x, y), size=(w, h))
def draw_path(self, gc, path, transform, rgbFace=None):
'''Produce the rendering of the graphics elements using
:class:`kivy.graphics.Line` and :class:`kivy.graphics.Mesh` kivy
graphics instructions. The paths are converted into polygons and
assigned either to a clip rectangle or to the same canvas for
rendering. Paths are received in matplotlib coordinates. The
aesthetics is defined by the `GraphicsContextKivy` gc.
'''
if _mpl_ge_2_0:
polygons = path.to_polygons(transform, self.widget.width,
self.widget.height, closed_only=False)
else:
polygons = path.to_polygons(transform, self.widget.width,
self.widget.height)
list_canvas_instruction = self.get_path_instructions(gc, polygons,
closed=True, rgbFace=rgbFace)
for widget, instructions in list_canvas_instruction:
widget.canvas.add(instructions)
def draw_markers(self, gc, marker_path, marker_trans, path,
trans, rgbFace=None):
'''Markers graphics instructions are stored on a dictionary and
hashed through graphics context and rgbFace values. If a marker_path
with the corresponding graphics context exist then the instructions
are pulled from the markers dictionary.
'''
if not len(path.vertices):
return
# get a string representation of the path
path_data = self._convert_path(
marker_path,
marker_trans + Affine2D().scale(1.0, -1.0),
simplify=False)
# get a string representation of the graphics context and rgbFace.
style = str(gc._get_style_dict(rgbFace))
dictkey = (path_data, str(style))
# check whether this marker has been created before.