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Add stac opacity control #62

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merged 3 commits into from
Jun 8, 2023
Merged

Add stac opacity control #62

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1fa2008
add opacity slider to control stac layer
emmalu Jun 6, 2023
3786aa7
use selected item dropdown value for layer opacity
emmalu Jun 6, 2023
a10aa97
slider label update to match basemap
emmalu Jun 7, 2023
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34 changes: 28 additions & 6 deletions stac_ipyleaflet/stac_discovery/stac_widget.py
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Original file line number Diff line number Diff line change
@@ -1,11 +1,12 @@
from datetime import datetime
from ipywidgets import Box, Combobox, DatePicker, Dropdown, HBox, HTML
from ipywidgets import Layout, Output, RadioButtons, Tab, ToggleButtons, VBox
from ipywidgets import Box, DatePicker, Dropdown, HBox, HTML
from ipywidgets import Layout, Output, RadioButtons, SelectionSlider, Tab, ToggleButtons, VBox
from pystac_client import Client
from stac_ipyleaflet.stac_discovery.stac import Stac

class StacDiscoveryWidget():
def template(self) -> Box( style={"max_height: 200px"}):
opacity_values = [i*10 for i in range(10+1)] # [0.001, 0.002, ...]
titiler_stac_endpoint = "https://titiler.maap-project.org"
standard_width = "440px"
styles = {
Expand All @@ -15,7 +16,7 @@ def template(self) -> Box( style={"max_height: 200px"}):
layouts = {
"default": Layout(width=standard_width, padding="2px 6px"),
"header": Layout(width=standard_width, padding="2px 6px", margin="2px 2px -6px 2px"),
"buttons": Layout(display="flex", flex_flow="row", justify_content="flex-end", margin="0.5rem 1.5rem"),
"buttons": Layout(display="flex", flex_flow="row", align_items="flex-end", justify_content="flex-end", margin="0.5rem 1.5rem"),
"radio": Layout(display="flex", width="max-content", padding="2px 6px"),
}

Expand Down Expand Up @@ -304,7 +305,16 @@ def list_palette_categories():
disabled=True,
tooltips=["Display selected Item on the Map"],
)
buttons_box = Box([stac_buttons], layout=layouts["buttons"])
stac_opacity_slider = SelectionSlider(
value=1,
options=[("%g"%i, i/100) for i in opacity_values],
description="STAC Layer",
continuous_update=False,
orientation='horizontal',
layout=Layout(margin="-12px 0 4px 0")
)

buttons_box = Box([ stac_opacity_slider, stac_buttons], layout=layouts["buttons"])
stac_tab_labels = ['Catalog', 'Visualization']
tab_widget_children = []
stac_tab_widget = Tab()
Expand Down Expand Up @@ -341,10 +351,15 @@ def list_palette_categories():
output
]

def handle_stac_layer_opacity(change):
if self.stac_data["layer_added"] == True:
l = self.find_layer(items_dropdown.value)
if l.name:
l.opacity = change["new"]

def prep_data_display_settings():
is_displayable = False

stac_opacity_slider.disabled = True
assets = [i for i in self.stac_data["items"] if i["id"] == items_dropdown.value][0]["assets"]
item_href = [i for i in self.stac_data["items"] if i["id"] == items_dropdown.value][0]["href"]
metadata = Stac.get_item_info(url=item_href)
Expand All @@ -362,7 +377,7 @@ def prep_data_display_settings():
data_types = data_asset.media_type
# print(f"{asset} data type:", data_types)
if "application=geotiff" in data_types and "profile=cloud-optimized" in data_types:
is_displayable = True
is_displayable = True
# if "statistics" in metadata:
# minv, maxv = metadata["statistics"]["1"]["min"], metadata["statistics"]["1"]["max"]
# print("MIN/MAX", minv, maxv)
Expand Down Expand Up @@ -391,6 +406,8 @@ def prep_data_display_settings():
output.clear_output()
print("Item is ready for display.")
else:
stac_buttons.disabled = True
stac_opacity_slider.disabled = True
with output:
output.clear_output()
print("This item cannot displayed. Only Cloud-Optimized GeoTIFFs are supported at this time.")
Expand Down Expand Up @@ -515,6 +532,9 @@ def palette_category_changed(change):
# palette.value = None
# raster_options.children = [] """

def reset_stac_opacity_slider():
stac_opacity_slider.value = 1
stac_opacity_slider.disabled = False

def button_clicked(change):
if change["new"] == "Display ":
Expand Down Expand Up @@ -571,7 +591,9 @@ def button_clicked(change):
self.layers = self.layers[:len(self.layers)-1]
self.stac_data["layer_added"] = False
self.add_tile_layer(url=tile_url, name=items_dropdown.value, attribution=items_dropdown.value)
stac_opacity_slider.observe(handle_stac_layer_opacity, names="value")
self.stac_data["layer_added"] = True
reset_stac_opacity_slider()
if len(bounds) > 0:
self.fit_bounds([[bounds[1], bounds[0]], [bounds[3], bounds[2]]])
output.clear_output()
Expand Down