Google地图矩形可编辑:如何锁定(固定)编辑高度 [英] Google Maps Rectangle editable: how to lock (fixed) height from editing
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问题描述
我有一个Google Map,里面有一个可编辑,可移动和可调整大小的矩形。
我正在寻找的是一种锁定矩形给定高度的方法,所以只有
宽度可以改变。
I have a Google Map, in it a rectangle which is editable, moveable and resizable etc. What I am looking for is a way to lock the given height of the rectangle, so only the width can be changed.
推荐答案
您可以防止矩形在JavaScript中使用bounds_changed事件调整高度。
You can prevent the rectangle from resizing the height with the bounds_changed Event in JavaScript.
下面是一个可用的jsfiddle: http://jsfiddle.net/h7ee4368/
Here is a working jsfiddle: http://jsfiddle.net/h7ee4368/
矩形api参考: https://developers.google.com/maps/documentation/javascript/reference?hl=de#Rectangle
JavaScript src:
JavaScript src:
var rectangle;
var originalBounds;
var map;
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(44.5452, -78.5389),
zoom: 9
};
map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
var bounds = new google.maps.LatLngBounds(
new google.maps.LatLng(44.490, -78.649),
new google.maps.LatLng(44.599, -78.443)
);
originalBounds = bounds;
// Define the rectangle and set its editable property to true.
rectangle = new google.maps.Rectangle({
bounds: bounds,
editable: true,
draggable: true
});
rectangle.setMap(map);
// Add an event listener on the rectangle.
google.maps.event.addListener(rectangle, 'bounds_changed', boundsChangedCb);
}
var skipBoundsChangedCb = false;
function boundsChangedCb(event) {
if(skipBoundsChangedCb) return;
var ne = rectangle.getBounds().getNorthEast();
var sw = rectangle.getBounds().getSouthWest();
var origNe = originalBounds.getNorthEast();
var origSw = originalBounds.getSouthWest();
//avoid recursion
skipBoundsChangedCb = true;
rectangle.setBounds(new google.maps.LatLngBounds(
new google.maps.LatLng(ne.lat() - origNe.lat() + origSw.lat(), sw.lng()),
ne
));
skipBoundsChangedCb = false;
origNe = ne;
origSw = sw;
}
google.maps.event.addDomListener(window, 'load', initialize);
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