[gnome-maps] Improve zoom travel

[Jonas Danielsson <jonasdn src gnome org>]

commit d5b807d914e42315cd2bac1f790d5c951b79f82a
Author: Jonas Danielsson <jonas threetimestwo org>
Date:   Sat Oct 10 23:46:12 2015 +0200

    Improve zoom travel

 src/mapMarker.js |    6 ++++--
 src/mapWalker.js |    3 +--
 2 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/src/mapMarker.js b/src/mapMarker.js
index e31290f..92cc4e9 100644
--- a/src/mapMarker.js
+++ b/src/mapMarker.js
@@ -70,8 +70,10 @@ const MapMarker = new Lang.Class({
     _onButtonPress: function(marker, event) {
         // Zoom in on marker on double-click
         if (event.get_click_count() > 1) {
-            this._view.zoom_level = this._view.max_zoom_level - 1;
-            this._view.center_on(this.latitude, this.longitude);
+            if (this._view.zoom_level < this._view.max_zoom_level - 1) {
+                this._view.zoom_level = this._view.max_zoom_level - 1;
+                this._view.center_on(this.latitude, this.longitude);
+            }
         }
     },
 
diff --git a/src/mapWalker.js b/src/mapWalker.js
index 301ff70..b8365e3 100644
--- a/src/mapWalker.js
+++ b/src/mapWalker.js
@@ -56,9 +56,8 @@ const MapWalker = new Lang.Class({
     // Zoom to the maximal zoom-level that fits the place type
     zoomToFit: function() {
         let zoom;
-
         if (this._boundingBox !== null) {
-            this._view.zoom_level = this._view.max_zoom_level;
+            this._view.zoom_level = this._view.max_zoom_level - 1;
             this._view.ensure_visible(this._boundingBox, false);
         } else {
             switch (this.place.place_type) {