On Thursday, August 12, 2010, DevHour <ja...@devhour.net> wrote: > Currently I am trying to export maps to a canvas element by using the example > posted at > http://trac.openlayers.org/browser/sandbox/camptocamp/canvas/openlayers/examples/exportMapCanvas.html > by tsauerwein. So far i've grabbed that html file and the exportMap.js > file. The issue i'm having is that it won't export the WMS layers, although > it will export vector layers. > > I've gone through and tried to debug the script (using Firebug) and this is > the part where its failing: > > ExportMap.js - line 128 through 136 > exportGridLayer: function(layer) { > if (layer.useCanvas != OpenLayers.Layer.Grid.ONECANVASPERLAYER) { > return; > } > > if (layer.canvas != null) { > this.drawLayer(layer.canvas); > } > }, > > Now it is passing the layer correctly into the function but layer.useCanvas > is undefined. So it'll automatically pass over that first if statement, and > also layer.canvas is also undefined there so it'll pass over the next if > statement as well. Meaning that the layer won't get passed through to the > draw canvas. Like I said it works for vectors, just not the others. Is there > any reason why these 2 properties (useCanvas and canvas) are both undefined? > am I missing a reference to something? > > Any help I get will be greatly appreciated!
This sandbox also includes code for displaying tiles using canvas. And it looks like only WMS layers that use canvas with the ONECANVASPERLAYER mode can be exported. Hope it helps, -- Eric Lemoine Camptocamp France SAS Savoie Technolac, BP 352 73377 Le Bourget du Lac, Cedex Tel : 00 33 4 79 44 44 96 Mail : eric.lemo...@camptocamp.com http://www.camptocamp.com _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users
