From 949736af9b1ec22bfabf0586097c26bae5427c30 Mon Sep 17 00:00:00 2001
From: Anthony Lapenna <lapenna.anthony@gmail.com>
Date: Wed, 11 May 2016 19:08:21 +1200
Subject: [PATCH 1/2] Added support for minZoomOverride flag. If set to true,
 the minZoom option will be used instead of being calculated.

---
 src/google_map.js | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/google_map.js b/src/google_map.js
index 60d8b0f..0597072 100644
--- a/src/google_map.js
+++ b/src/google_map.js
@@ -306,6 +306,13 @@ export default class GoogleMap extends Component {
     return DEFAULT_MIN_ZOOM;
   }
 
+  _computeMinZoom = (minZoomOverride, minZoom) => {
+    if (minZoomOverride) {
+      return minZoom ? minZoom : DEFAULT_MIN_ZOOM;
+    }
+    return this._getMinZoom();
+  }
+
   _initMap = () => {
     // only initialize the map once
     if (this.initialized_) {
@@ -356,7 +363,7 @@ export default class GoogleMap extends Component {
       const draggableOptions = this.props.draggable !== undefined &&
         {draggable: this.props.draggable};
 
-      const minZoom = this._getMinZoom();
+      const minZoom = this._computeMinZoom(options.minZoomOverride, options.minZoom);
       this.minZoom_ = minZoom;
 
       const preMapOptions = {
@@ -494,7 +501,9 @@ export default class GoogleMap extends Component {
       maps.event.addListener(map, 'idle', () => {
         if (this.resetSizeOnIdle_) {
           this._setViewSize();
-          const currMinZoom = this._getMinZoom();
+          const currMinZoom = this._computeMinZoom(
+            this.props.options.minZoomOverride,
+            this.props.options.minZoom);
 
           if (currMinZoom !== this.minZoom_) {
             this.minZoom_ = currMinZoom;

From b2671d185affb99de8d3158986fefa1f7ad24a12 Mon Sep 17 00:00:00 2001
From: Anthony Lapenna <lapenna.anthony@gmail.com>
Date: Wed, 11 May 2016 20:26:25 +1200
Subject: [PATCH 2/2] add a section in README about overriding minimum zoom

---
 README.md | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/README.md b/README.md
index 34d3d3e..6c3d817 100644
--- a/README.md
+++ b/README.md
@@ -385,6 +385,21 @@ and if so, uses it, so it won't load a second copy of the library.
 <script type="text/javascript" src="https://maps.google.com/maps/api/js?libraries=places&sensor=false"></script>
 ```
 
+### Override the default minimum zoom
+
+*WARNING*: Setting these options can break markers calculation, causing no homeomorphism between screen coordinates and map.
+
+You can use the `minZoomOverride` associated with the `minZoom` in the custom map options to prevent a minimum zoom from being calculated:
+
+```javascript
+function createMapOptions() {
+  return {
+    minZoomOverride: true,
+    minZoom: 2,
+  };
+}
+```
+
 ---
 
 (*Really big thanks to [April Arcus](https://github.com/AprilArcus) for documentation fixes*)