Openlayers / Openstreetmap背景是垂直条纹和压扁

Question

因此，我的openlayers实现的背景似乎被压缩成垂直条纹。奇怪的是它并不总是这样，但即使我把所有的变化都藏回到我知道它正在工作的地方，它仍然被打破了。这让我想知道是否有些东西已经改变了瓷砖资产的交付方式。我已经尝试过在使用osm和wms图层之间切换而没有任何变化，任何帮助都会受到赞赏。

以下是相关代码：

initMap: function() {
  var view = this;
  var map = this.map = new OpenLayers.Map();
  map.render(this.$map[0]);

  var wmsLayer = new OpenLayers.Layer.WMS( "OpenLayers WMS",
    "http://vmap0.tiles.osgeo.org/wms/vmap0?", {layers: 'basic'});

  var osmLayer = new OpenLayers.Layer.OSM();

  this.layers = {
    point: new OpenLayers.Layer.Vector("Point Layer"),
    line: new OpenLayers.Layer.Vector("Line Layer"),
    polygon: new OpenLayers.Layer.Vector("Polygon Layer")
  };

  this.setValue(this.value);

  map.addLayers([this.layers.point, this.layers.line, this.layers.polygon, osmLayer]);

  drawControls = {
    point: new OpenLayers.Control.DrawFeature(this.layers.point,
      OpenLayers.Handler.Point),
    line: new OpenLayers.Control.DrawFeature(this.layers.line,
      OpenLayers.Handler.Path),
    polygon: new OpenLayers.Control.DrawFeature(this.layers.polygon,
      OpenLayers.Handler.Polygon)
  };

  this.layers[this.layerType].events.on({'sketchcomplete': function(feature) {

    if (!view.multiple) {
      // deactivate polygon layer once a polygon has been added
      drawControls[view.layerType].deactivate();
    }

  }});

  for(var key in drawControls) {
    map.addControl(drawControls[key]);
  }

  if (this.layers[this.layerType].features.length) {
    var bounds = this.layers[this.layerType].getDataExtent();
    var zoom = this.layers[this.layerType].getZoomForExtent(bounds);
    var lon = (bounds.top - bounds.bottom) / 2;
    var lat = (bounds.right - bounds.left) / 2;
    map.setCenter(new OpenLayers.LonLat(lon,lat), 3);
    map.zoomToExtent(bounds);

    if (view.multiple) {
      drawControls[view.layerType].activate();
    }

  } else {
    map.setCenter(new OpenLayers.LonLat(-11174482.03751,4861394.9982606), 4);
    drawControls[view.layerType].activate();
  }

  this.$('.clear').click(function(e) {
    e.preventDefault();
    view.layers[view.layerType].destroyFeatures();
    drawControls[view.layerType].activate();
  });
},

这是输出：

Answer 1

所以我发现了问题。 Twitter引导程序在其重置文件中有一行设置：

img { max-width: 100% }

这是在压缩图像。您可以通过执行以下操作来解决此问题：

img { max-width: none; }

Answer 2

I was having the same problem, are you using bootstrap of twitter? 

I found out there was a selector for img elements that was affecting the map. I had the next selector into the bootstrap.css"

img {
  max-width: 100%;
  vertical-align: middle;
  border: 0;
  -ms-interpolation-mode: bicubic;
}

I don't know whay the parameter max-width: 100%; makes the vertical stripes in my case. I remove the propertie max-width: 100% and now is working.

Answer 3

将img { max-width: 100% }设置为img { max-width:none; }可以解决问题。

然而这会对您网站上的图片产生意想不到的影响。我也使用Bootstrap Twitter的旋转木马组件进行图像处理，当我上面改变时，图像不适合旋转木马。因此我更改了它，以便它只针对OpenLayers / OpenStreetMap div中的图像。

div#outlet_map img { max-width:none; }