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- matplotlib.backend_bases.FigureCanvasBase
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- FigureCanvasGD
- matplotlib.backend_bases.FigureManagerBase
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- FigureManagerGD
- FigureManagerGD
- matplotlib.backend_bases.GraphicsContextBase
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- GraphicsContextGD
- matplotlib.backend_bases.RendererBase
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- RendererGD
class FigureCanvasGD(matplotlib.backend_bases.FigureCanvasBase) |
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Methods defined here:
- draw(self)
- Draw to a gd image and return the image instance
- print_figure(self, filename, dpi=150, facecolor='w', edgecolor='w', orientation='portrait')
- Render the figure to hardcopy using self.renderer as the
renderer if neccessary
filename can be a string filename or writable file instance
Methods inherited from matplotlib.backend_bases.FigureCanvasBase:
- __init__(self, figure)
- button_press_event(self, x, y, button, guiEvent=None)
- Backend derived classes should call this function on any mouse
button press. x,y are the canvas coords: 0,0 is lower, left.
button and key are as defined in MouseEvent
- button_release_event(self, x, y, button, guiEvent=None)
- Backend derived classes should call this function on any mouse
button release. x,y are the canvas coords: 0,0 is lower, left.
button and key are as defined in MouseEvent
- draw_cursor(self, event)
- Draw a cursor in the event.axes if inaxes is not None. Use
native GUI drawing for efficiency if possible
- key_press_event(self, key, guiEvent=None)
- key_release_event(self, key, guiEvent=None)
- motion_notify_event(self, x, y, guiEvent=None)
- Backend derived classes should call this function on any mouse
button release. x,y are the canvas coords: 0,0 is lower, left.
button and key are as defined in MouseEvent
- mpl_connect(self, s, func)
- Connect event with string s to func. The signature of func is
def func(event)
where event is a MplEvent. The following events are recognized
'key_press_event'
'button_press_event'
'button_release_event'
'motion_notify_event'
For the three events above, if the mouse is over the axes,
the variable event.inaxes will be set to the axes it is over,
and additionally, the variables event.xdata and event.ydata
will be defined. This is the mouse location in data coords.
See backend_bases.MplEvent.
return value is a connection id that can be used with
mpl_disconnect
- mpl_disconnect(self, cid)
- Connect s to func. return an id that can be used with disconnect
Method should return None
- switch_backends(self, FigureCanvasClass)
- instantiate an instance of FigureCanvasClass
This is used for backend switching, eg, to instantiate a
FigureCanvasPS from a FigureCanvasGTK. Note, deep copying is
not done, so any changes to one of the instances (eg, setting
figure size or line props), will be reflected in the other
Data and other attributes inherited from matplotlib.backend_bases.FigureCanvasBase:
- events = ('key_press_event', 'key_release_event', 'button_press_event', 'button_release_event', 'motion_notify_event')
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class GraphicsContextGD(matplotlib.backend_bases.GraphicsContextBase) |
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The graphics context provides the color, line styles, etc... See
the gtk and postscript backends for examples of mapping the
graphics context attributes (cap styles, join styles, line widths,
colors) to a particular backend.
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Methods defined here:
- __init__(self, im, renderer)
- Initialize with a gd image
- set_clip_rectangle(self, rectangle)
- set_linestyle(self, style)
- set_linewidth(self, lw)
Methods inherited from matplotlib.backend_bases.GraphicsContextBase:
- copy_properties(self, gc)
- Copy properties from gc to self
- get_alpha(self)
- Return the alpha value used for blending - not supported on
all backends
- get_antialiased(self)
- Return true if the object should try to do antialiased rendering
- get_capstyle(self)
- Return the capstyle as a string in ('butt', 'round', 'projecting')
- get_clip_rectangle(self)
- Return the clip rectangle as (left, bottom, width, height)
- get_dashes(self)
- Return the dash information as an offset dashlist tuple The
dash list is a even size list that gives the ink on, ink off
in pixels. See p107 of to postscript BLUEBOOK for more info
Default value is None
- get_joinstyle(self)
- Return the line join style as one of ('miter', 'round', 'bevel')
- get_linestyle(self, style)
- Return the linestyle: one of ('solid', 'dashed', 'dashdot',
'dotted').
- get_linewidth(self)
- Return the line width in points as a scalar
- get_rgb(self)
- returns a tuple of three floats from 0-1. color can be a
matlab format string, a html hex color string, or a rgb tuple
- set_alpha(self, alpha)
- Set the alpha value used for blending - not supported on
all backends
- set_antialiased(self, b)
- True if object should be drawn with antialiased rendering
- set_capstyle(self, cs)
- Set the capstyle as a string in ('butt', 'round', 'projecting')
- set_dashes(self, dash_offset, dash_list)
- Set the dash style for the gc.
dash_offset is the offset (usually 0).
dash_list specifies the on-off sequence as points
(None, None) specifies a solid line
- set_foreground(self, fg, isRGB=False)
- Set the foreground color. fg can be a matlab format string, a
html hex color string, an rgb unit tuple, or a float between 0
and 1. In the latter case, grayscale is used.
The GraphicsContext converts colors to rgb internally. If you
know the color is rgb already, you can set isRGB to True to
avoid the performace hit of the conversion
- set_graylevel(self, frac)
- Set the foreground color to be a gray level with frac frac
- set_joinstyle(self, js)
- Set the join style to be one of ('miter', 'round', 'bevel')
Data and other attributes inherited from matplotlib.backend_bases.GraphicsContextBase:
- dashd = {'dashdot': (0, (3.0, 5.0, 1.0, 5.0)), 'dashed': (0, (6.0, 6.0)), 'dotted': (0, (1.0, 3.0)), 'solid': (None, None)}
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class RendererGD(matplotlib.backend_bases.RendererBase) |
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The renderer handles all the drawing primitives using a graphics
context instance that controls the colors/styles
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Methods defined here:
- __init__(self, im, dpi)
- Initialize the renderer with a gd image instance
- draw_arc(self, gc, rgbFace, x, y, width, height, angle1, angle2)
- Draw an arc centered at x,y with width and height and angles
from 0.0 to 360.0
- draw_line(self, gc, x1, y1, x2, y2)
- Draw a single line from x1,y1 to x2,y2
- draw_lines(self, gc, x, y)
- x and y are equal length arrays, draw lines connecting each
point in x, y
- draw_point(self, gc, x, y)
- Draw a single point at x,y
- draw_polygon(self, gc, rgbFace, points)
- Draw a polygon. points is a len vertices tuple, each element
giving the x,y coords a vertex
- draw_rectangle(self, gc, rgbFace, x, y, width, height)
- Draw a rectangle at lower left x,y with width and height
If filled=True, fill the rectangle with the gc foreground
gc is a GraphicsContext instance
- draw_text(self, gc, x, y, s, prop, angle, ismath)
- Render the text using the RendererGD instance
- finish(self)
- flipy(self)
- return true if y small numbers are top for renderer
- flush_clip(self)
- get_canvas_width_height(self)
- return the canvas width and height in display coords
- get_gd_color(self, rgb)
- RGB is a unit RGB tuple, return a gd color
- get_text_scale(self)
- Return the scale factor for fontsize taking screendpi and pixels per
inch into account
- get_text_width_height(self, s, prop, ismath)
- get the width and height in display coords of the string s
with fontsize in points
- new_gc(self)
- Return an instance of a GraphicsContextGD
- points_to_pixels(self, points)
- convert point measures to pixes using dpi and the pixels per
inch of the display
Methods inherited from matplotlib.backend_bases.RendererBase:
- close_group(self, s)
- close a grouping element with label s
Is only currently used by backend_svg
- 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
- draw_line_collection(self, segments, transform, clipbox, colors, linewidths, linestyle, antialiaseds, offsets, transOffset)
- This is a function for optimized line drawing. If you need to draw
many line segments with similar properties, it is faster to avoid the
overhead of all the object creation etc. The lack of total
configurability is compensated for with efficiency. Hence we don't use
a GC and many of the line props it supports. See
matplotlib.collections for more details.
segments is a sequence of ( line0, line1, line2), where linen =
(x0, y0), (x1, y1), ... (xm, ym). Each line can be a
different length
transform is used to Transform the lines
clipbox is a xmin, ymin, width, height clip rect
colors is a tuple of RGBA tuples
linewidths is a tuple of linewidths
*** really should be called 'dashes' not 'linestyle', since
we call gc.set_dashes() not gc.set_linestyle() ***
linestyle is an (offset, onoffseq) tuple or None,None for solid
antialiseds is a tuple of ones or zeros indicating whether the
segment should be aa or not
offsets, if not None, is a list of x,y offsets to translate the lines
by after transform is used to transform the offset coords
This function could be overridden in the backend to possibly implement
faster drawing, but it is already much faster than using draw_lines()
by itself.
- draw_poly_collection(self, verts, transform, clipbox, facecolors, edgecolors, linewidths, antialiaseds, offsets, transOffset)
- Draw a polygon collection
verts are a sequence of polygon vectors, where each polygon
vector is a sequence of x,y tuples of vertices
facecolors and edgecolors are a sequence of RGBA tuples
linewidths are a sequence of linewidths
antialiaseds are a sequence of 0,1 integers whether to use aa
- draw_regpoly_collection(self, clipbox, offsets, transOffset, verts, sizes, facecolors, edgecolors, linewidths, antialiaseds)
- Draw a regular poly collection
offsets - is a sequence is x,y tuples
transOffset - maps this to display coords
verts - are the vertices of the regular polygon at the origin
sizes are the area of the circle that circumscribes the
polygon in points^2
facecolors and edgecolors are a sequence of RGBA tuples
linewidths are a sequence of linewidths
antialiaseds are a sequence of 0,1 integers whether to use aa
- get_text_extent(self, text)
- Get the text extent in window coords
- open_group(self, s)
- open a grouping element with label s
Is only currently used by backend_svg
- strip_math(self, s)
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