def make_histogram(self, data, show_axis=None, distance=True):
color = colors.Category.CAT20C[0]
matplotlib.rcParams.update({'font.size': 9.5})
figure = Figure(frameon=False, figsize=(4, 2), dpi=72, edgecolor=color)
specs = matplotlib.gridspec.GridSpec(ncols=8, nrows=1, figure=figure)
plot = figure.add_subplot(specs[0, 1:7])
plot.patch.set_alpha(1.0)
adjust_spines(plot, ['left'], color)
formatter = FormatStrFormatter('%g')
plot.yaxis.set_major_formatter(formatter)
plot.yaxis.set_major_locator(MaxNLocator(5))
if distance:
plot.plot(data[:, 0], data[:, 1], lw=0.75)
else:
plot.vlines(data[:, 0], 0, data[:, 1])
plot.set_xlim(min(data[:, 0]), max(data[:, 0]))
# Ask matplotlib to render the figure to a bitmap using the Agg backend
canvas = FigureCanvasCairo(figure)
width, height = canvas.get_width_height()
renderer = RendererCairo(canvas.figure.dpi)
renderer.set_width_height(width, height)
self.plot_surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width,
height)
renderer.set_ctx_from_surface(self.plot_surface)
canvas.figure.draw(renderer)
self.show_histogram = True
def do_expose_event(self, event):
cr = self.window.cairo_create()
if not self.cached_contents:
self.cached_contents = cr.get_target().create_similar(cairo.CONTENT_COLOR,
self.allocation.width, self.allocation.height)
renderer = RendererCairo(self.figure.dpi)
renderer.set_width_height(self.allocation.width, self.allocation.height)
renderer.set_ctx_from_surface(self.cached_contents)
self.figure.draw(renderer)
# event.region is not bound: http://bugzilla.gnome.org/show_bug.cgi?id=487158
# gdk_context = gtk.gdk.CairoContext(renderer.ctx)
# gdk_context.region(event.region)
# gdk_context.clip()
cr.set_source_surface(self.cached_contents, 0, 0)
cr.paint()
def do_expose_event(self, event):
cr = self.window.cairo_create()
if not self.cached_contents:
self.cached_contents = cr.get_target().create_similar(
cairo.CONTENT_COLOR, self.allocation.width,
self.allocation.height)
renderer = RendererCairo(self.figure.dpi)
renderer.set_width_height(self.allocation.width,
self.allocation.height)
renderer.set_ctx_from_surface(self.cached_contents)
self.figure.draw(renderer)
# event.region is not bound: http://bugzilla.gnome.org/show_bug.cgi?id=487158
# gdk_context = gtk.gdk.CairoContext(renderer.ctx)
# gdk_context.region(event.region)
# gdk_context.clip()
cr.set_source_surface(self.cached_contents, 0, 0)
cr.paint()
