<!DOCTYPE html>
<html>
<head>
<title>OpenSeadragon fitBoundsWithConstraints() Demo</title>
<script type="text/javascript" src='../../build/openseadragon/openseadragon.js'></script>
<style type="text/css">
.openseadragon1 {
width: 800px;
height: 600px;
}
#highlights li {
cursor: pointer;
}
</style>
</head>
<body>
<div>
Simple demo page to show 'viewport.fitBounds().applyConstraints()' issue.
</div>
<div id="contentDiv" class="openseadragon1"></div>
<div id="highlights"></div>
<select onchange="changeMethod(this.value);">
<option value=0>viewport.fitBoundsWithConstraints(bounds);</option>
<option value=1>viewport.fitBounds(bounds);</option>
<option value=2>viewport.fitBounds(bounds).applyConstraints();</option>
</select>
<input type="button" value="Go home" onclick="goHome()"/>
<script type="text/javascript">
var _viewer;
var _fittingMethod = 0;
var _highlights = [
{"queryPoint":[0.13789887359998443,0.43710575899579285], "radius":0.004479581945070337,"text":"Pipe"},
{"queryPoint":[0.5923298766583593,0.6461653354541856], "radius":0.013175241014912752,"text":"Fuel here"},
{"queryPoint":[0.43920338711232304,0.7483181389302148], "radius":0.09222668710438928, "text":"Wheel"},
{"queryPoint":[0.07341677959486298,0.9028719921872319], "radius":0.08996845561083797, "text":"Nothing special"}
];
var generateUniqueHash = (function() {
var counter = 0;
return function() {
return "openseadragon_" + (counter++);
};
})();
var _viewer = OpenSeadragon({
element: document.getElementById("contentDiv"),
showNavigationControl: false,
prefixUrl: "../../build/openseadragon/images/",
hash: generateUniqueHash(), //this is only needed if you want to instantiate more than one viewer at a time.
tileSources: {
Image: {
xmlns: "http://schemas.microsoft.com/deepzoom/2008",
Url: 'http://cdn.photosynth.net/ps2/19d5cf2b-77ed-439f-ac21-d3046320384c/packet/undistorted/img0043/',
Format: "jpg",
Overlap: 1,
TileSize: 510,
Size: {
Width: 4592,
Height: 3448
}
}
}
});
_viewer.addHandler("open", function() {
var str = "<ul>";
for (var i=0; i<_highlights.length; ++i) {
var highlight = _highlights[i];
str += "<li onclick='gotoHighlight("+i+")'>"+highlight.text+"</li>";
}
str += "</ul>";
document.getElementById("highlights").innerHTML = str;
});
function gotoHighlight(index) {
var highlight = _highlights[index];
var viewport = _viewer.viewport;
var contentSize = viewport.contentSize;
var scaling = 1.0 / viewport.viewportToImageZoom(viewport.getZoom());
var radius = highlight.radius*Math.min(contentSize.x, contentSize.y);/*annotation.accurateRadius*scaling;*/
var center = new OpenSeadragon.Point(contentSize.x*highlight.queryPoint[0], contentSize.y*highlight.queryPoint[1]);
var bounds = viewport.imageToViewportRectangle(new OpenSeadragon.Rect(center.x-radius, center.y-radius, radius*2, radius*2));
if (_fittingMethod === 0) {
viewport.fitBoundsWithConstraints(bounds, false);
}
else if (_fittingMethod === 1) {
viewport.fitBounds(bounds, false);
}
else if (_fittingMethod === 2) {
viewport.fitBounds(bounds, false).applyConstraints();
}
}
function changeMethod(value) {
_fittingMethod = parseInt(value, 10);
}
function goHome() {
_viewer.viewport.goHome();
}
</script>
</body>
</html>