I have been able to draw the label, still I can't get the positioning
right. This is the code in case someone wants to do something similar:
public class MapLabel {
private Element div;
private LatLng latLng;
private SimplePanel textPanel;
private String text;
private OverlayView overlay = OverlayView.create();
public MapLabel(LatLng latLng, String text, GoogleMap map) {
this.latLng = latLng;
this.text = text;
HTML textWidget = new HTML(text);
textPanel = new SimplePanel();
textPanel.setStyleName("textOverlayPanel");
textPanel.add(textWidget);
initOverlay(overlay);
overlay.setMap(map);
}
private final native void initOverlay(JavaScriptObject jso) /*-{
var instance = this;
jso.draw = function() {
$entry([email protected]::myDraw()());
};
jso.onAdd = function() {
$entry([email protected]::myOnAdd()());
};
jso.onRemove = function() {
$entry([email protected]::myOnRemove()());
};
}-*/;
public void myDraw() {
Point ne =
overlay.getProjection().fromLatLngToDivPixel(overlay.getMap().getBounds().getNorthEast());
Point sw =
overlay.getProjection().fromLatLngToDivPixel(overlay.getMap().getBounds().getSouthWest());
Point p = overlay.getProjection().fromLatLngToDivPixel(latLng);
div.getParentElement().getStyle().setTop(p.getY(), Unit.PX);
div.getParentElement().getStyle().setLeft(p.getX(), Unit.PX);
div.getStyle().setWidth(100, Unit.PX);
div.getStyle().setHeight(25, Unit.PX);
}
public void myOnAdd() {
div = DOM.createDiv();
div.appendChild(textPanel.getElement());
overlay.getPanes().getFloatPane().appendChild(div);
}
public void myOnRemove() {
div.removeFromParent();
textPanel.removeFromParent();
div = null;
textPanel = null;
}
}
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