Added map listening function

gee-community · Mar 10, 2020 · 24f8345 · 24f8345
1 parent 670f805
commit 24f8345
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Showing 2 changed files with 111 additions and 8 deletions.
diff --git a/examples/template.ipynb b/examples/template.ipynb
@@ -67,7 +67,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "52f3f95c6d8c42f2989cfca1fda19b41",
+       "model_id": "0e4633b38a204fde9a92189750d15c65",
        "version_major": 2,
        "version_minor": 0
       },
@@ -210,7 +210,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "2d7a5832df964ccc80313222d5b5d399",
+       "model_id": "6e6d1cb853654442b904479bab917e2a",
        "version_major": 2,
        "version_minor": 0
       },
@@ -224,7 +224,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "69ce5d2c3d1c4ce5b4b420f6ccd33893",
+       "model_id": "ed6bdb6285ac4b98b080e72159e97fc9",
        "version_major": 2,
        "version_minor": 0
       },
@@ -263,14 +263,14 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 13,
+   "execution_count": 11,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
-      "[[36.95208671786997, -106.95516114945306], [40.78262115769853, -84.89031816016386], [46.19028890427803, -108.09796178236444]]\n"
+      "[]\n"
      ]
     }
    ],
@@ -293,7 +293,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "6ac9daec1eb943358f1c204af1e7d57f",
+       "model_id": "46c6d1c32b26403998753c23a0054e75",
        "version_major": 2,
        "version_minor": 0
       },
@@ -307,7 +307,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "18f395fa020044ca843b2b324d340b23",
+       "model_id": "efabed93955d427ba6644e1b8d2eccec",
        "version_major": 2,
        "version_minor": 0
       },
@@ -321,7 +321,7 @@
     {
      "data": {
       "application/vnd.jupyter.widget-view+json": {
-       "model_id": "4cfc7fea73c94e05a2cf9e89fcd2af50",
+       "model_id": "ebc2d97a64644ff9bde4718f2124c28a",
        "version_major": 2,
        "version_minor": 0
       },
@@ -373,6 +373,86 @@
     "Map"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## A simplifed version for capturing user interaction"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "application/vnd.jupyter.widget-view+json": {
+       "model_id": "a292e5d857e34ac3a46f8f2c57712e96",
+       "version_major": 2,
+       "version_minor": 0
+      },
+      "text/plain": [
+       "Map(center=[40, -100], controls=(ZoomControl(options=['position', 'zoom_in_text', 'zoom_in_title', 'zoom_out_t…"
+      ]
+     },
+     "metadata": {},
+     "output_type": "display_data"
+    }
+   ],
+   "source": [
+    "import geemap\n",
+    "Map = geemap.Map(center=(40, -100), zoom=4)\n",
+    "Map.listening(event='click', add_marker=True)\n",
+    "Map"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[40.40617642341373, -113.46033398294868]"
+      ]
+     },
+     "execution_count": 16,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Get the last mouse clicked coordinates\n",
+    "Map.last_click"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 17,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[[43.859286990143055, -106.95516114945306],\n",
+       " [42.12369172732473, -93.15364581352316],\n",
+       " [36.20106624342554, -93.15364581352316],\n",
+       " [34.914088616906106, -102.64768184078703],\n",
+       " [40.40617642341373, -113.46033398294868]]"
+      ]
+     },
+     "execution_count": 17,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# Get all the mouse clicked coordinates\n",
+    "Map.all_clicks"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,

diff --git a/geemap/geemap.py b/geemap/geemap.py
@@ -158,6 +158,29 @@ def addTileLayer(self, url='https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
 ipyleaflet.Map.addTileLayer = addTileLayer
 
 
+def listening(self, event='click', add_marker=True):
+
+    coordinates = []
+
+    def handle_interaction(**kwargs):
+        latlon = kwargs.get('coordinates')
+
+        if event == 'click' and kwargs.get('type') == 'click':
+            coordinates.append(latlon)
+            self.last_click = latlon
+            self.all_clicks = coordinates
+            if add_marker:
+                self.add_layer(Marker(location=latlon))
+        elif kwargs.get('type') == 'mousemove':
+            pass
+
+    self.on_interaction(handle_interaction)
+
+ipyleaflet.Map.listening = listening
+ipyleaflet.Map.last_click = []
+ipyleaflet.Map.all_clicks = []
+
+
 if __name__ == '__main__':
 
     map = Map()