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<!DOCTYPE html>
<html>
<head>
<title>Dyer</title>
<style type="text/css">
.viewport {
border:solid 1px #000000;
display: inline-block;
height: 400px;
overflow: scroll;
width: 600px;
}
</style>
<script src="js/mp/dye.js"></script>
<script src="js/mp/resource.js"></script>
</head>
<body>
<div class="viewport" dropzone="link" ondrop="dyeDrop(event);" ondragover="event.preventDefault();">
<canvas id="dyeCanvas"></canvas>
</div>
<div class="viewport" dropzone="link" ondrop="referenceDrop(event);" ondragover="event.preventDefault();"></div>
<div style="display: none" >
<canvas id="rawCanvas"></canvas>
</div>
<div><input type="text" id="dyeStringInput" size="100"/><button onclick="applyDye(event);">Apply</button></div>
<script>
var dyeCanvas = document.getElementById("dyeCanvas"),
dyeStringInput = document.getElementById("dyeStringInput");
var loadedImage = null;
function applyDye(event) {
if (loadedImage == null) {
return;
}
var ctx = dyeCanvas.getContext("2d");
ctx.clearRect(0, 0, dyeCanvas.width, dyeCanvas.height);
var clone = mp.resource.copyImageData(ctx, loadedImage);
mp.dye.dyeImage(clone.data, mp.dye.parseDyeString(dyeStringInput.value));
ctx.putImageData(clone, 0, 0);
}
function dyeDrop(event) {
event.stopPropagation();
event.preventDefault();
var file = event.dataTransfer.files[0],
reader = new FileReader();
reader.onload = function (event) {
mp.resource.loadImage(event.target.result, function(err, imageData) {
if (!err) {
loadedImage = imageData;
dyeCanvas.width = loadedImage.width;
dyeCanvas.height = loadedImage.height;
applyDye(null);
}
});
};
reader.readAsDataURL(file);
return false;
}
function referenceDrop(event) {
event.stopPropagation();
event.preventDefault();
var file = event.dataTransfer.files[0],
reader = new FileReader();
reader.onload = function (event) {
var img = new Image();
img.src = event.target.result;
referenceViewport.innerHTML = '';
referenceViewport.appendChild(img);
};
reader.readAsDataURL(file);
return false;
}
</script>
</body>
</html>
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