Merge pull request #70 from Samweli/add_footprint

Support for loading item footprints when they are available
stac-utils · Dec 21, 2021 · 885b26c · 885b26c
2 parents 504834e + 532e847
commit 885b26c
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Showing 5 changed files with 51 additions and 5 deletions.
diff --git a/src/qgis_stac/api/client.py b/src/qgis_stac/api/client.py
@@ -60,6 +60,8 @@ def handle_items(
                 assets=assets
 
             )
+            if item.geometry:
+                item_result.geometry = item.geometry
             items.append(item_result)
 
         self.items_received.emit(items, pagination)

diff --git a/src/qgis_stac/api/models.py b/src/qgis_stac/api/models.py
@@ -190,7 +190,7 @@ class Item:
     type: ResourceType = None
     stac_version: str = None
     stac_extensions: typing.List[str] = None
-    geometry: ResourceGeometry = None
+    geometry: typing.Optional[dict] = None
     bbox: typing.List[float] = None
     properties: ResourceProperties = None
     links: typing.List[ResourceLink] = None

diff --git a/src/qgis_stac/gui/result_item_widget.py b/src/qgis_stac/gui/result_item_widget.py
@@ -5,6 +5,9 @@
 
 import os
 
+import json
+import tempfile
+
 from functools import partial
 
 from qgis.PyQt import (
@@ -114,6 +117,42 @@ def initialize_ui(self):
             'selection-color: white;'
         )
 
+        self.footprint_box.setEnabled(self.item.geometry is not None)
+        self.footprint_box.clicked.connect(self.add_footprint)
+
+    def add_footprint(self):
+        """ Adds the item footprint inside QGIS as a map layer"""
+        layer_file = tempfile.NamedTemporaryFile(
+            mode="w+",
+            suffix='.geojson',
+            delete=False
+        )
+        layer_name = f"{self.item.id}_footprint"
+        json.dump(self.item.geometry, layer_file)
+
+        layer_file.flush()
+
+        layer = QgsVectorLayer(
+            layer_file.name,
+            layer_name,
+            AssetLayerType.VECTOR.value
+        )
+        if layer.isValid():
+            QgsProject.instance().addMapLayer(layer)
+            self.main_widget.show_message(
+                tr("Successfully loaded footprint layer."),
+                level=Qgis.Info
+            )
+
+        else:
+            self.main_widget.show_message(
+                tr(
+                    "Couldn't load footprint into QGIS,"
+                    " its layer is not valid."
+                ),
+                level=Qgis.Critical
+            )
+
     def update_inputs(self, enabled):
         """ Updates the inputs widgets state in the main search item widget.
 
@@ -156,7 +195,6 @@ def download_asset(self, index):
         except Exception as e:
             self.main_widget.show_message("Error in downloading file")
 
-
     def load_asset(self, index):
         """ Loads asset into QGIS.
             Checks if the asset type is a loadable layer inside QGIS.

diff --git a/src/qgis_stac/ui/qgis_stac_widget.ui b/src/qgis_stac/ui/qgis_stac_widget.ui
@@ -29,7 +29,7 @@
       </sizepolicy>
      </property>
      <property name="currentIndex">
-      <number>2</number>
+      <number>0</number>
      </property>
      <widget class="QWidget" name="search">
       <attribute name="title">

diff --git a/src/qgis_stac/ui/result_item_widget.ui b/src/qgis_stac/ui/result_item_widget.ui
@@ -146,7 +146,7 @@
           <item>
            <widget class="QToolButton" name="footprint_box">
             <property name="toolTip">
-             <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;Open resource in Browser&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+             <string>Add item footprint as a layer</string>
             </property>
             <property name="text">
              <string>Add footprint</string>
@@ -155,6 +155,9 @@
           </item>
           <item>
            <widget class="QComboBox" name="assets_load_box">
+            <property name="toolTip">
+             <string>Add item assets as layers</string>
+            </property>
             <item>
              <property name="text">
               <string>Add assets as layers</string>
@@ -164,6 +167,9 @@
           </item>
           <item>
            <widget class="QComboBox" name="assets_download_box">
+            <property name="toolTip">
+             <string>Download item assets</string>
+            </property>
             <item>
              <property name="text">
               <string>Download assets</string>
@@ -195,7 +201,7 @@
            <enum>QFrame::StyledPanel</enum>
           </property>
           <property name="text">
-           <string>Thumbnail</string>
+           <string>No Thumbnail</string>
           </property>
           <property name="alignment">
            <set>Qt::AlignCenter</set>