def make_default_figure(
images=[DEFAULT_IMAGE_PATH],
stroke_color=class_to_color(DEFAULT_LABEL_CLASS),
stroke_width=DEFAULT_STROKE_WIDTH,
shapes=[],
):
fig = plot_common.dummy_fig()
plot_common.add_layout_images_to_fig(fig, images)
fig.update_layout({
"dragmode": "drawopenpath",
"shapes": shapes,
"newshape.line.color": stroke_color,
"newshape.line.width": stroke_width,
"margin": dict(l=0, r=0, b=0, t=0, pad=4),
})
return fig
def make_default_figure(
images=[],
stroke_color=DEFAULT_STROKE_COLOR,
stroke_width=DEFAULT_STROKE_WIDTH,
shapes=[],
img_args=dict(layer="above"),
width_scale=1,
height_scale=1,
):
fig = plot_common.dummy_fig()
plot_common.add_layout_images_to_fig(
fig,
images,
img_args=img_args,
width_scale=width_scale,
height_scale=height_scale,
update_figure_dims="height",
)
# add an empty image with the same size as the greatest of the already added
# images so that we can add computed masks clientside later
mwidth, mheight = [
max([im[sz] for im in fig["layout"]["images"]]) for sz in ["sizex", "sizey"]
]
fig.add_layout_image(
dict(
source="",
xref="x",
yref="y",
x=0,
y=0,
sizex=mwidth,
sizey=mheight,
sizing="contain",
layer="above",
)
)
fig.update_layout(
{
"dragmode": "drawopenpath",
"shapes": shapes,
"newshape.line.color": stroke_color,
"newshape.line.width": stroke_width,
"margin": dict(l=0, r=0, b=0, t=0, pad=4),
}
)
return fig
def test_image_figure(shape=(300, 500), color="#002EA7"):
""" Make a figure containing an image that is just a constant color for
testing. """
fig = plot_common.dummy_fig()
im = np.ones(shape, dtype="uint8")
imc = image_utils.label_to_colors(im, ["#000000", color], alpha=255)
imcu = plot_common.img_array_to_uri(imc)
fig = plot_common.add_layout_images_to_fig(fig, [imcu])
# and we make it so you can draw for fun
fig.update_layout({
"dragmode": "drawopenpath",
"shapes": [],
"newshape.line.color": "purple",
"newshape.line.width": 5,
"margin": dict(l=0, r=0, b=0, t=0, pad=4),
})
return fig
app=dash.Dash(server=server)
app.layout=html.Div(children=[
dcc.Store(id='img_array'),
dcc.Upload(
id='uploader',
children=html.Button('Load Image'),
multiple=False),
html.Button(
'Rotate Clockwise',
id='rotate_cw'),
html.Button(
'Rotate Counter-clockwise',
id='rotate_ccw'),
html.Div(id='dummy'),
dcc.Graph(id='graph',figure=plot_common.dummy_fig()),
html.Div(id='button1_n_clicks_display'),
html.A(id='download',children='Download image',href='/0000.png')
])
@app.callback(
[dash.dependencies.Output('download','href')],
[dash.dependencies.Input('download','n_clicks')])
def update_image_num(download_n_clicks):
"""
This is used simply to update the href so that browsers don't just use a
cached image.
"""
return ("/%s.png" % (uuid.uuid4().hex,),)
img_array = [None]