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tacaswelltacaswell
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split backend_gtk3agg.py into two parts, the gcf dependent and
gcf independent parts. Same poor naming scheme as everything else in this branch.
1 parent 4f9f5b5 commit 03e86ee

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2 files changed

+135
-110
lines changed

2 files changed

+135
-110
lines changed

‎lib/matplotlib/backends/_backend_gtk3agg.py

Lines changed: 117 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,117 @@
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from __future__ import (absolute_import, division, print_function,
2+
unicode_literals)
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import six
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import numpy as np
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import sys
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import warnings
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from . import backend_agg
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from . import backend_gtk3
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from .backend_cairo import cairo, HAS_CAIRO_CFFI
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from matplotlib.figure import Figure
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from matplotlib import transforms
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if six.PY3 and not HAS_CAIRO_CFFI:
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warnings.warn(
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"The Gtk3Agg backend is known to not work on Python 3.x with pycairo. "
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"Try installing cairocffi.")
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21+
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class FigureCanvasGTK3Agg(backend_gtk3.FigureCanvasGTK3,
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backend_agg.FigureCanvasAgg):
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def __init__(self, figure):
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backend_gtk3.FigureCanvasGTK3.__init__(self, figure)
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self._bbox_queue = []
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def _renderer_init(self):
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pass
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def _render_figure(self, width, height):
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backend_agg.FigureCanvasAgg.draw(self)
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def on_draw_event(self, widget, ctx):
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""" GtkDrawable draw event, like expose_event in GTK 2.X
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"""
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allocation = self.get_allocation()
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w, h = allocation.width, allocation.height
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if not len(self._bbox_queue):
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if self._need_redraw:
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self._render_figure(w, h)
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bbox_queue = [transforms.Bbox([[0, 0], [w, h]])]
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else:
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return
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else:
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bbox_queue = self._bbox_queue
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for bbox in bbox_queue:
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area = self.copy_from_bbox(bbox)
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buf = np.fromstring(area.to_string_argb(), dtype='uint8')
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x = int(bbox.x0)
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y = h - int(bbox.y1)
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width = int(bbox.x1) - int(bbox.x0)
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height = int(bbox.y1) - int(bbox.y0)
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58+
if HAS_CAIRO_CFFI:
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ctx = cairo.Context._from_pointer(
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cairo.ffi.cast('cairo_t **',
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id(ctx) + object.__basicsize__)[0],
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incref=True)
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image = cairo.ImageSurface.create_for_data(
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buf.data, cairo.FORMAT_ARGB32, width, height)
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else:
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image = cairo.ImageSurface.create_for_data(
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buf, cairo.FORMAT_ARGB32, width, height)
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ctx.set_source_surface(image, x, y)
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ctx.paint()
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if len(self._bbox_queue):
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self._bbox_queue = []
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return False
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def blit(self, bbox=None):
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# If bbox is None, blit the entire canvas to gtk. Otherwise
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# blit only the area defined by the bbox.
79+
if bbox is None:
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bbox = self.figure.bbox
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allocation = self.get_allocation()
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w, h = allocation.width, allocation.height
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x = int(bbox.x0)
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y = h - int(bbox.y1)
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width = int(bbox.x1) - int(bbox.x0)
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height = int(bbox.y1) - int(bbox.y0)
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self._bbox_queue.append(bbox)
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self.queue_draw_area(x, y, width, height)
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def print_png(self, filename, *args, **kwargs):
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# Do this so we can save the resolution of figure in the PNG file
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agg = self.switch_backends(backend_agg.FigureCanvasAgg)
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return agg.print_png(filename, *args, **kwargs)
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97+
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def new_figure_manager(num, *args, **kwargs):
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"""
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Create a new figure manager instance
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"""
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FigureClass = kwargs.pop('FigureClass', Figure)
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thisFig = FigureClass(*args, **kwargs)
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return new_figure_manager_given_figure(num, thisFig)
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106+
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def new_figure_manager_given_figure(num, figure):
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"""
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Create a new figure manager instance for the given figure.
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"""
111+
canvas = FigureCanvasGTK3Agg(figure)
112+
manager = _backend_gtk3.FigureManagerGTK3(canvas, num)
113+
return manager
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115+
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FigureCanvas = FigureCanvasGTK3Agg
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FigureManager = _backend_gtk3.FigureManagerGTK3

‎lib/matplotlib/backends/backend_gtk3agg.py

Lines changed: 18 additions & 110 deletions
Original file line numberDiff line numberDiff line change
@@ -2,121 +2,29 @@
22
unicode_literals)
33

44
import six
5-
6-
import numpy as np
7-
import sys
85
import warnings
96

10-
from . import backend_agg
11-
from . import backend_gtk3
12-
from .backend_cairo import cairo, HAS_CAIRO_CFFI
13-
from matplotlib.figure import Figure
14-
from matplotlib import transforms
15-
16-
if six.PY3 and not HAS_CAIRO_CFFI:
17-
warnings.warn(
18-
"The Gtk3Agg backend is known to not work on Python 3.x with pycairo. "
19-
"Try installing cairocffi.")
20-
21-
22-
class FigureCanvasGTK3Agg(backend_gtk3.FigureCanvasGTK3,
23-
backend_agg.FigureCanvasAgg):
24-
def __init__(self, figure):
25-
backend_gtk3.FigureCanvasGTK3.__init__(self, figure)
26-
self._bbox_queue = []
27-
28-
def _renderer_init(self):
29-
pass
30-
31-
def _render_figure(self, width, height):
32-
backend_agg.FigureCanvasAgg.draw(self)
33-
34-
def on_draw_event(self, widget, ctx):
35-
""" GtkDrawable draw event, like expose_event in GTK 2.X
36-
"""
37-
allocation = self.get_allocation()
38-
w, h = allocation.width, allocation.height
39-
40-
if not len(self._bbox_queue):
41-
if self._need_redraw:
42-
self._render_figure(w, h)
43-
bbox_queue = [transforms.Bbox([[0, 0], [w, h]])]
44-
else:
45-
return
46-
else:
47-
bbox_queue = self._bbox_queue
48-
49-
for bbox in bbox_queue:
50-
area = self.copy_from_bbox(bbox)
51-
buf = np.fromstring(area.to_string_argb(), dtype='uint8')
52-
53-
x = int(bbox.x0)
54-
y = h - int(bbox.y1)
55-
width = int(bbox.x1) - int(bbox.x0)
56-
height = int(bbox.y1) - int(bbox.y0)
57-
58-
if HAS_CAIRO_CFFI:
59-
ctx = cairo.Context._from_pointer(
60-
cairo.ffi.cast('cairo_t **',
61-
id(ctx) + object.__basicsize__)[0],
62-
incref=True)
63-
image = cairo.ImageSurface.create_for_data(
64-
buf.data, cairo.FORMAT_ARGB32, width, height)
65-
else:
66-
image = cairo.ImageSurface.create_for_data(
67-
buf, cairo.FORMAT_ARGB32, width, height)
68-
ctx.set_source_surface(image, x, y)
69-
ctx.paint()
7+
from matplotlib._pylab_helpers import Gcf
8+
from ._backend_gtk3agg import (FigureCanvasGTK3Agg,
9+
new_figure_manager,
10+
new_figure_manager_given_figure
11+
)
7012

71-
if len(self._bbox_queue):
72-
self._bbox_queue = []
13+
from ._backend_gtk3 import FigureManagerGTK3
14+
from .backend_gtk3 import (show,
15+
draw_if_interactive,
16+
_gtk_cleanup,
17+
key_press_handler)
7318

74-
return False
7519

76-
def blit(self, bbox=None):
77-
# If bbox is None, blit the entire canvas to gtk. Otherwise
78-
# blit only the area defined by the bbox.
79-
if bbox is None:
80-
bbox = self.figure.bbox
81-
82-
allocation = self.get_allocation()
83-
w, h = allocation.width, allocation.height
84-
x = int(bbox.x0)
85-
y = h - int(bbox.y1)
86-
width = int(bbox.x1) - int(bbox.x0)
87-
height = int(bbox.y1) - int(bbox.y0)
88-
89-
self._bbox_queue.append(bbox)
90-
self.queue_draw_area(x, y, width, height)
91-
92-
def print_png(self, filename, *args, **kwargs):
93-
# Do this so we can save the resolution of figure in the PNG file
94-
agg = self.switch_backends(backend_agg.FigureCanvasAgg)
95-
return agg.print_png(filename, *args, **kwargs)
96-
97-
98-
class FigureManagerGTK3Agg(backend_gtk3.FigureManagerGTK3):
99-
pass
100-
101-
102-
def new_figure_manager(num, *args, **kwargs):
103-
"""
104-
Create a new figure manager instance
105-
"""
106-
FigureClass = kwargs.pop('FigureClass', Figure)
107-
thisFig = FigureClass(*args, **kwargs)
108-
return new_figure_manager_given_figure(num, thisFig)
109-
110-
111-
def new_figure_manager_given_figure(num, figure):
112-
"""
113-
Create a new figure manager instance for the given figure.
114-
"""
115-
canvas = FigureCanvasGTK3Agg(figure)
116-
manager = FigureManagerGTK3Agg(canvas, num)
117-
return manager
20+
if six.PY3:
21+
warnings.warn("The Gtk3Agg backend is not known to work on Python 3.x.")
11822

11923

12024
FigureCanvas = FigureCanvasGTK3Agg
121-
FigureManager = FigureManagerGTK3Agg
122-
show = backend_gtk3.show
25+
FigureManager = FigureManagerGTK3
26+
27+
# set the call backs
28+
FigureManager._key_press_handler = staticmethod(key_press_handler)
29+
FigureManager._destroy_callback = staticmethod(Gcf.destroy)
30+
FigureManager._gtk_cleanup = staticmethod(_gtk_cleanup)

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