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74 lines
3.6 KiB
HTML
74 lines
3.6 KiB
HTML
<!DOCTYPE HTML>
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<html style="overflow:hidden">
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<head>
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<meta charset="utf-8">
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<!-- The viewport tag will result in APZ being in a "zoomed-in" state, assuming
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the device width is less than 980px. -->
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<meta name="viewport" content="width=980; initial-scale=1.0">
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<title>Test for bug 1280013</title>
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<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
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<script type="application/javascript" src="apz_test_utils.js"></script>
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<script type="application/javascript" src="/tests/SimpleTest/paint_listener.js"></script>
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<script type="application/javascript">
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function* test(testDriver) {
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SimpleTest.ok(screen.height > 500, "Screen height must be at least 500 pixels for this test to work");
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// This listener will trigger the test to continue once APZ is done with
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// processing the scroll.
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SpecialPowers.Services.obs.addObserver(testDriver, "APZ:TransformEnd", false);
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// Scroll down to the iframe. Do it in two drags instead of one in case the
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// device screen is short
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yield synthesizeNativeTouchDrag(document.body, 10, 400, 0, -(350 + TOUCH_SLOP));
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yield synthesizeNativeTouchDrag(document.body, 10, 400, 0, -(350 + TOUCH_SLOP));
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// Now the top of the visible area should be at y=700 of the top-level page,
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// so if the screen is >= 500px tall, the entire iframe should be visible, at
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// least vertically.
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// However, because of the overflow:hidden on the root elements, all this
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// scrolling is happening in APZ and is not reflected in the main-thread
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// scroll position (it is stored in the callback transform instead). We check
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// this by checking the scroll offset.
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yield flushApzRepaints(testDriver);
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SimpleTest.is(window.scrollY, 0, "Main-thread scroll position is still at 0");
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// Scroll the iframe by 300px. Note that since the main-thread scroll position
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// is still 0, the subframe's getBoundingClientRect is going to be off by
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// 700 pixels, so we compensate for that here.
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var subframe = document.getElementById('subframe');
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yield synthesizeNativeTouchDrag(subframe, 10, 200 - 700, 0, -(300 + TOUCH_SLOP));
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// Remove the observer, we don't need it any more.
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SpecialPowers.Services.obs.removeObserver(testDriver, "APZ:TransformEnd", false);
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// Flush any pending paints
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yield flushApzRepaints(testDriver);
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// get the displayport for the subframe
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var utils = SpecialPowers.getDOMWindowUtils(window);
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var contentPaints = utils.getContentAPZTestData().paints;
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var lastPaint = convertScrollFrameData(contentPaints[contentPaints.length - 1].scrollFrames);
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var foundIt = 0;
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for (var scrollId in lastPaint) {
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if (('contentDescription' in lastPaint[scrollId]) &&
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(lastPaint[scrollId]['contentDescription'].includes('tall_html'))) {
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var dp = getPropertyAsRect(lastPaint, scrollId, 'criticalDisplayport');
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SimpleTest.ok(dp.y <= 0, 'The critical displayport top should be less than or equal to zero to cover the visible part of the subframe; it is ' + dp.y);
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SimpleTest.ok(dp.y + dp.h >= subframe.clientHeight, 'The critical displayport bottom should be greater than the clientHeight; it is ' + (dp.y + dp.h));
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foundIt++;
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}
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}
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SimpleTest.is(foundIt, 1, "Found exactly one critical displayport for the subframe we were interested in.");
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}
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waitUntilApzStable()
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.then(runContinuation(test))
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.then(subtestDone);
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</script>
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</head>
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<body style="overflow:hidden">
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The iframe below is at (0, 800). Scroll it into view, and then scroll the contents. The content should be fully rendered in high-resolution.
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<iframe id="subframe" style="position:absolute; left: 0px; top: 800px; width: 600px; height: 350px" src="helper_tall.html"></iframe>
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</body>
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</html>
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