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<?xml version="1.0" encoding="utf-8"?>
<html xmlns="http://www.w3.org/1999/xhtml">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="../resources/test-helper.js"></script>
<head>
<title>Canvas drag and drop: allowed effects 'copy','move','link'</title>
<style type="text/css">
div {
display: inline-block;
vertical-align: top;
background-color: olive;
color: white;
padding: 20px;
width: 100px;
height: 100px;
}
div:nth-child(2) {
background-color: green;
}
div:nth-child(3) {
background-color: teal;
}
</style>
</head>
<body>
<p>
Drag these canvas elements. Each has a different effectAllowed and color
pattern.
</p>
<p>
<canvas id="copy-drag" width="100" height="100" draggable="true"
ondragstart="event.dataTransfer.effectAllowed = 'copy'">Copy
Canvas</canvas>
<canvas id="move-drag" width="100" height="100" draggable="true"
ondragstart="event.dataTransfer.effectAllowed = 'move'">Move
Canvas</canvas>
<canvas id="link-drag" width="100" height="100" draggable="true"
ondragstart="event.dataTransfer.effectAllowed = 'link'">Link
Canvas</canvas>
</p>
<p>
Drop targets for each effect:
</p>
<p>
<div id="copy-drop" ondragover="onDragOver(event, 'copy')">copy</div>
<div id="move-drop" ondragover="onDragOver(event, 'move')">move</div>
<div id="link-drop" ondragover="onDragOver(event, 'link')">link</div>
</p>
</body>
<script>
// Draw patterns on the three canvases with different colors
function drawCanvasPattern(canvasId, primaryColor, secondaryColor) {
var canvas = document.getElementById(canvasId),
c = canvas.getContext('2d');
for (var x = 0; x != 50; x++) {
c.fillStyle = (x % 2 == 0) ? primaryColor : secondaryColor;
c.beginPath();
c.moveTo(x, x);
c.lineTo(100 - x, x);
c.lineTo(100 - x, 100 - x);
c.lineTo(x, 100 - x);
c.closePath();
c.fill();
}
}
// Draw the three canvas patterns
drawCanvasPattern('copy-drag', 'olive', 'white');
drawCanvasPattern('move-drag', 'green', 'white');
drawCanvasPattern('link-drag', 'teal', 'white');
function onDragOver(event, effect) {
event.preventDefault();
event.dataTransfer.dropEffect = effect;
}
async function test() {
await new Promise(loaded => window.addEventListener("load", loaded));
for (const effect of ['copy', 'move', 'link']) {
const dragCanvas = document.getElementById(effect + '-drag');
const dropDiv = document.getElementById(effect + '-drop');
dragDropTest(
dragCanvas, dropDiv, dropEffectOnDropCallBack,
'dropEffect should match effectAllowed on drop for ' + effect);
}
}
test();
</script>
</html>
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