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- matplotlib.backend_bases.FigureCanvasBase
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- FigureCanvasPaint
- matplotlib.backend_bases.RendererBase
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- RendererPaint
class FigureCanvasPaint(matplotlib.backend_bases.FigureCanvasBase) |
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Methods defined here:
- draw(self)
- Render the figure using RendererPaint instance renderer
- 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
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 RendererPaint(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, width, height, dpi)
- creates a new image
- dash_path(self, gc, path)
- Add dashes to the path and return it if dashes are set
- draw_arc(self, gcEdge, 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.
If rgbFace is not None, fill the rectangle with it. gcEdge
is a GraphicsContext instance
- 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, gcEdge, rgbFace, points)
- Draw a polygon. points is a len vertices tuple, each element
giving the x,y coords a vertex.
If rgbFace is not None, fill the rectangle with it. gcEdge
is a GraphicsContext instance
- draw_rectangle(self, gcEdge, rgbFace, x, y, width, height)
- Draw a rectangle at lower left x,y with width and height.
If rgbFace is not None, fill the rectangle with it. gcEdge
is a GraphicsContext instance
- draw_text(self, gc, x, y, s, prop, angle, ismath)
- Render the text using the RendererPaint instance
- flipy(self)
- return true if y small numbers are top for renderer
- get_canvas_width_height(self)
- return the canvas width and height in display coords
- get_paint_color(self, rgb)
- returns a paint color object based on the given rgb tuple
- 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
- points_to_pixels(self, points)
Data and other attributes defined here:
- fontd = {}
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
- new_gc(self)
- Return an instance of a GraphicsContextBase
- 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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