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Adding support for imageOverlay #112

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Adding support for imageOverlay #112

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18 changes: 18 additions & 0 deletions index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -42,9 +42,27 @@ module.exports = function leafletImage(map, callback) {

function drawTileLayer(l) {
if (l instanceof L.TileLayer) layerQueue.defer(handleTileLayer, l);
else if (l instanceof L.ImageOverlay) layerQueue.defer(handleImageOverlay, l);
else if (l._heat) layerQueue.defer(handlePathRoot, l._canvas);
}

function handleImageOverlay(imgOverlay, callback) {
var imgBounds = imgOverlay.getBounds(),
bounds = new L.Bounds(
map.latLngToLayerPoint(imgBounds.getNorthWest()),
map.latLngToLayerPoint(imgBounds.getSouthEast())),
size = bounds.getSize();
var imageObj = new Image();
imageObj.src = imgOverlay._url;
imageObj.onload = function () {
var ctx = canvas.getContext('2d');
ctx.drawImage(this, bounds.min.x, bounds.min.y, size.x, size.y);
callback(null, {
canvas: canvas
});
};
}

function drawMarkerLayer(l) {
if (l instanceof L.Marker && l.options.icon instanceof L.Icon) {
layerQueue.defer(handleMarkerLayer, l);
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20 changes: 20 additions & 0 deletions leaflet-image.js
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Original file line number Diff line number Diff line change
Expand Up @@ -43,9 +43,27 @@ module.exports = function leafletImage(map, callback) {

function drawTileLayer(l) {
if (l instanceof L.TileLayer) layerQueue.defer(handleTileLayer, l);
else if (l instanceof L.ImageOverlay) layerQueue.defer(handleImageOverlay, l);
else if (l._heat) layerQueue.defer(handlePathRoot, l._canvas);
}

function handleImageOverlay(imgOverlay, callback) {
var imgBounds = imgOverlay.getBounds(),
bounds = new L.Bounds(
map.latLngToLayerPoint(imgBounds.getNorthWest()),
map.latLngToLayerPoint(imgBounds.getSouthEast())),
size = bounds.getSize();
var imageObj = new Image();
imageObj.src = imgOverlay._url;
imageObj.onload = function () {
var ctx = canvas.getContext('2d');
ctx.drawImage(this, bounds.min.x, bounds.min.y, size.x, size.y);
callback(null, {
canvas: canvas
});
};
}

function drawMarkerLayer(l) {
if (l instanceof L.Marker && l.options.icon instanceof L.Icon) {
layerQueue.defer(handleMarkerLayer, l);
Expand Down Expand Up @@ -250,6 +268,8 @@ module.exports = function leafletImage(map, callback) {
}

function addCacheString(url) {
// workaround for https://github.com/mapbox/leaflet-image/issues/84
if (!url) return url;
// If it's a data URL we don't want to touch this.
if (isDataURL(url) || url.indexOf('mapbox.com/styles/v1') !== -1) {
return url;
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