| Index: third_party/WebKit/PerformanceTests/Layout/large-table-background-change-with-collapsed-borders.html
|
| diff --git a/third_party/WebKit/PerformanceTests/Layout/large-table-background-change-with-collapsed-borders.html b/third_party/WebKit/PerformanceTests/Layout/large-table-background-change-with-collapsed-borders.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..24de45e503b8ff2e8d070a655a4c36908bda5746
|
| --- /dev/null
|
| +++ b/third_party/WebKit/PerformanceTests/Layout/large-table-background-change-with-collapsed-borders.html
|
| @@ -0,0 +1,62 @@
|
| +<!DOCTYPE html>
|
| +<script src="../resources/runner.js"></script>
|
| +<pre id="log"></pre>
|
| +<script>
|
| +// We discard the first iteration to avoid a cold outlier.
|
| +var iterations = 11;
|
| +var results = [];
|
| +var previousFrameTime = -1;
|
| +var now = function(){
|
| + return window.performance ? performance.now() : Date.now();
|
| +};
|
| +
|
| +function createTable(rows, columns) {
|
| + var table = document.createElement("TABLE");
|
| + // Collapsing border is not necessary to see the slowness
|
| + // but it makes the painting phase ~2x slower.
|
| + table.style.borderCollapse = "collapse";
|
| + for (var i = 0; i < rows; ++i) {
|
| + var tr = document.createElement("TR");
|
| + for (var j = 0; j < columns; ++j) {
|
| + var td = document.createElement("TD");
|
| + tr.appendChild(td);
|
| + }
|
| + table.appendChild(tr);
|
| + }
|
| + return table;
|
| +}
|
| +
|
| +
|
| +var table = createTable(300, 320);
|
| +document.body.appendChild(table);
|
| +
|
| +ix=30;
|
| +iy=30;
|
| +
|
| +function toggleBackgroundColor()
|
| +{
|
| + var thisFrameTime = now();
|
| + if (previousFrameTime != -1)
|
| + results.push(thisFrameTime - previousFrameTime);
|
| + previousFrameTime = thisFrameTime;
|
| +
|
| + if (iterations == 0) {
|
| + PerfTestRunner.logStatistics(results, 'ms', "Time:");
|
| + if (window.testRunner)
|
| + testRunner.notifyDone();
|
| + } else {
|
| + iterations--;
|
| + window.requestAnimationFrame(toggleBackgroundColor);
|
| + }
|
| +
|
| + table.childNodes[iy].childNodes[ix].style.backgroundColor = 'teal';
|
| + ix++;
|
| + iy++;
|
| +}
|
| +
|
| +if (window.testRunner)
|
| + testRunner.waitUntilDone();
|
| +
|
| +// Start the test after two frame to ensure we have set-up, laid out and painted the table.
|
| +window.requestAnimationFrame(function() { window.requestAnimationFrame(toggleBackgroundColor) });
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 1529223002:
Land a collapsing border test case (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master