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Mini Shell
Mini Shell
import numpy as np
from .. import cbook
try:
from . import backend_cairo
except ImportError as e:
raise ImportError('backend Gtk4Agg requires cairo') from e
from . import backend_agg, backend_gtk4
from .backend_cairo import cairo
from .backend_gtk4 import Gtk, _BackendGTK4
class FigureCanvasGTK4Agg(backend_gtk4.FigureCanvasGTK4,
backend_agg.FigureCanvasAgg):
def __init__(self, figure):
backend_gtk4.FigureCanvasGTK4.__init__(self, figure)
def on_draw_event(self, widget, ctx):
scale = self.device_pixel_ratio
allocation = self.get_allocation()
Gtk.render_background(
self.get_style_context(), ctx,
allocation.x, allocation.y,
allocation.width, allocation.height)
ctx = backend_cairo._to_context(ctx)
buf = cbook._unmultiplied_rgba8888_to_premultiplied_argb32(
np.asarray(self.get_renderer().buffer_rgba()))
height, width, _ = buf.shape
image = cairo.ImageSurface.create_for_data(
buf.ravel().data, cairo.FORMAT_ARGB32, width, height)
image.set_device_scale(scale, scale)
ctx.set_source_surface(image, 0, 0)
ctx.paint()
return False
def draw(self):
# Call these explicitly because GTK's draw is a GObject method which
# isn't cooperative with Python class methods.
backend_agg.FigureCanvasAgg.draw(self)
backend_gtk4.FigureCanvasGTK4.draw(self)
class FigureManagerGTK4Agg(backend_gtk4.FigureManagerGTK4):
pass
@_BackendGTK4.export
class _BackendGTK4Agg(_BackendGTK4):
FigureCanvas = FigureCanvasGTK4Agg
FigureManager = FigureManagerGTK4Agg
Zerion Mini Shell 1.0