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Smooth GDragging at last. Thanks to overstdr for digging up the getDragObject method. With v2.93 and later we no longer get flickers on panning. Non-API smooth dragging is no longer supported. r=crschmidt,me (closes #1402)

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git-svn-id: http://svn.openlayers.org/trunk/openlayers@6492 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
2008-03-11 18:32:17 +00:00
parent 008c820e2b
commit d12fd7c04c
6 changed files with 47 additions and 45 deletions
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lib/OpenLayers/Layer/EventPane.js
+3 -16
View File
@@ -241,10 +241,9 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
if (dragging && this.dragPanMapObject &&
this.smoothDragPan) {
var resolution = this.map.getResolution();
var dX = (newCenter.lon - oldCenter.lon) / resolution;
var dY = (newCenter.lat - oldCenter.lat) / resolution;
this.dragPanMapObject(dX, dY);
var oldPx = this.map.getViewPortPxFromLonLat(oldCenter);
var newPx = this.map.getViewPortPxFromLonLat(newCenter);
this.dragPanMapObject(newPx.x-oldPx.x, oldPx.y-newPx.y);
} else {
var center = this.getMapObjectLonLatFromOLLonLat(newCenter);
var zoom = this.getMapObjectZoomFromOLZoom(newZoom);
@@ -281,18 +280,6 @@ OpenLayers.Layer.EventPane = OpenLayers.Class(OpenLayers.Layer, {
var moPixel = this.getMapObjectPixelFromOLPixel(viewPortPx);
var moLonLat = this.getMapObjectLonLatFromMapObjectPixel(moPixel);
lonlat = this.getOLLonLatFromMapObjectLonLat(moLonLat);
var xrem = this.map.size.w % 2;
var yrem = this.map.size.h % 2;
if(xrem != 0 || yrem != 0) {
// odd sized viewport
var olPx = viewPortPx.add(xrem, yrem);
var moPx = this.getMapObjectPixelFromOLPixel(olPx);
var moLoc = this.getMapObjectLonLatFromMapObjectPixel(moPx);
var olLoc = this.getOLLonLatFromMapObjectLonLat(moLoc);
// adjust by half a pixel in odd dimension(s)
lonlat.lon += (olLoc.lon - lonlat.lon) / 2;
lonlat.lat += (olLoc.lat - lonlat.lat) / 2;
}
}
return lonlat;
},