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🚸 preserve zoom and pan on image change #42

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merged 2 commits into from
Jul 18, 2023
Merged

🚸 preserve zoom and pan on image change #42

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62e736b
🚸 preserve zoom and pan on image change
danton267 Jul 14, 2023
e603bb6
🔀 Merge branch 'main' into preserve-zoom-and-pan
hannahker Jul 14, 2023
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21 changes: 19 additions & 2 deletions callbacks/image_viewer.py
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
from dash import Input, Output, State, callback, ctx, clientside_callback
from dash import Input, Output, State, callback, ctx, Patch, clientside_callback
import dash_mantine_components as dmc
from tifffile import imread
import plotly.express as px
Expand All @@ -8,6 +8,7 @@

@callback(
Output("image-viewer", "figure"),
Output("annotation-store", "data", allow_duplicate=True),
Output("image-viewer-loading", "zIndex", allow_duplicate=True),
Input("image-selection-slider", "value"),
State("project-name-src", "value"),
Expand Down Expand Up @@ -62,8 +63,17 @@ def render_image(
if str(image_idx) in annotation_store["annotations"]:
fig["layout"]["shapes"] = annotation_store["annotations"][str(image_idx)]

view = annotation_store["view"]
if "xaxis_range_0" in view and annotation_store["image_size"] == tf.size:
fig.update_layout(
xaxis=dict(range=[view["xaxis_range_0"], view["xaxis_range_1"]]),
yaxis=dict(range=[view["yaxis_range_0"], view["yaxis_range_1"]]),
)
patched_annotation_store = Patch()
patched_annotation_store["image_size"] = tf.size
fig_loading_overlay = -1
return fig, fig_loading_overlay

return fig, patched_annotation_store, fig_loading_overlay


clientside_callback(
Expand Down Expand Up @@ -92,6 +102,13 @@ def locally_store_annotations(relayout_data, img_idx, annotation_store):
"""
if "shapes" in relayout_data:
annotation_store["annotations"][str(img_idx - 1)] = relayout_data["shapes"]

if "xaxis.range[0]" in relayout_data:
annotation_store["view"]["xaxis_range_0"] = relayout_data["xaxis.range[0]"]
annotation_store["view"]["xaxis_range_1"] = relayout_data["xaxis.range[1]"]
annotation_store["view"]["yaxis_range_0"] = relayout_data["yaxis.range[0]"]
annotation_store["view"]["yaxis_range_1"] = relayout_data["yaxis.range[1]"]

return annotation_store


Expand Down
8 changes: 7 additions & 1 deletion components/control_bar.py
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Original file line number Diff line number Diff line change
Expand Up @@ -246,7 +246,13 @@ def layout():
),
dcc.Store(
id="annotation-store",
data={"dragmode": "drawopenpath", "visible": True, "annotations": {}},
data={
"dragmode": "drawopenpath",
"visible": True,
"annotations": {},
"view": {},
"image_size": [],
},
),
dcc.Store(id="project-data"),
html.Div(id="dummy-output"),
Expand Down
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