| <!doctype html> |
| <html> |
| <head> |
| <title>Viewport: Offset</title> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="width=device-width, minimum-scale=1"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="viewport_support.js"></script> |
| <script> |
| setup({explicit_done: true, explicit_timeout: true}); |
| </script> |
| <style> |
| html { |
| width: 100%; |
| height: 100%; |
| } |
| #fullscreenBox { |
| position: fixed; |
| left: 0; |
| top: 0; |
| width: 100%; |
| height: 100%; |
| visibility: hidden; |
| } |
| </style> |
| </head> |
| <body> |
| <h1>Viewport: Offset</h1> |
| <h4> |
| Test Description: Tests the offset scrolling properties on an |
| unscrollable page. |
| </h4> |
| <h2 style="color: red">THIS IS A MANUAL TEST</h2> |
| <p id="skip"> |
| <button id="skipbtn" onclick="skipManualTest();">Skip Test</button> |
| </p> |
| <h4>Instruction</h4> |
| <p id="instruction"></p> |
| <button id="continue">Start Test</button> |
| <div id="log"></div> |
| <div id="fullscreenBox"> |
| <!-- Invisible but needed to get maximum scrollable extents in the |
| presence of a collapsible URL bar. --> |
| </div> |
| </body> |
| <script> |
| var continueBtn = document.getElementById("continue"); |
| |
| function continueTest() { |
| nextStep(function(instructionText) { |
| var instruction = document.getElementById("instruction"); |
| continueBtn.innerText = "Continue"; |
| instruction.innerText = instructionText; |
| }); |
| } |
| |
| continueBtn.addEventListener('click', continueTest); |
| |
| // Prevent scrolling (though there should be no overflow) so that all |
| // scrolling must happen as panning the visual viewport within the |
| // layout viewport. |
| document.documentElement.style.overflow = "hidden"; |
| |
| addManualTestStep( |
| function() {}, |
| null, |
| '1. Ensure the browser is at the default pinch and browser zoom ' + |
| 'levels (100%). Most browsers: ctrl+0'); |
| |
| var scale = 3.0; |
| var xTarget = 2 * window.innerWidth / scale; |
| var yTarget = 2 * window.innerHeight / scale; |
| addManualTestStep( |
| showPinchWidget.bind(null, scale, xTarget, yTarget, continueTest), |
| null, |
| '2.Follow instructions on pinch zoom dialog.'); |
| |
| addManualTestStep( |
| function() { |
| var actualScale = window.visualViewport.scale; |
| var actualOffsetLeft = window.visualViewport.offsetLeft; |
| var actualOffsetTop = window.visualViewport.offsetTop; |
| |
| // This needs to happen before assertions in case they fail. A |
| // failed assertion stops running this function. |
| window.scrollTo(0, 0); |
| |
| // Ensure we zoomed in to about what we expect. |
| assert_approx_equals(actualScale, scale, 0.2, |
| "window.visualViewport.scale reflects pinch-zoom level"); |
| assert_approx_equals(actualOffsetLeft, xTarget, 5, |
| "offsetLeft value is correct."); |
| assert_approx_equals(actualOffsetTop, yTarget, 5, |
| "offsetTop value is correct."); |
| }, |
| 'With ~300% pinch-zoom', |
| '3. Pinch-zoom back out to the minimum scale'); |
| |
| addManualTestStep( |
| showPinchWidget.bind(null, 2, 0, 0, continueTest), |
| null, |
| '4.Follow instructions on pinch zoom dialog.'); |
| |
| addManualTestStep( |
| function() { |
| document.documentElement.style.overflow = ""; |
| continueBtn.style.position = "absolute"; |
| continueBtn.style.left = "150%"; |
| continueBtn.style.top = "150%"; |
| |
| assert_approx_equals(window.visualViewport.scale, 2, 0.2, |
| "window.visualViewport.scale reflects pinch-zoom level"); |
| }, |
| 'Tester pinch zoomed in correctly', |
| '5. Scroll fully to the bottom right. Click the continue button ' + |
| 'there.'); |
| |
| addManualTestStep( |
| function() { |
| var fullscreenBox = document.getElementById('fullscreenBox'); |
| var expectedLeft = fullscreenBox.clientWidth / 2; |
| var expectedTop = fullscreenBox.clientHeight / 2; |
| var viewOffsetLeft = window.visualViewport.offsetLeft; |
| var viewOffsetTop = window.visualViewport.offsetTop; |
| |
| // This needs to happen before assertions in case they fail. A |
| // failed assertion stops running this function. |
| continueBtn.style.position = ""; |
| continueBtn.style.left = ""; |
| continueBtn.style.top = ""; |
| |
| window.scrollTo(0, 0); |
| |
| assert_approx_equals(viewOffsetLeft, expectedLeft, 10, |
| "OffsetLeft is correct"); |
| assert_approx_equals(viewOffsetTop, expectedTop, 10, |
| "OffsetTop"); |
| }, |
| 'OffsetLeft and OffsetTop correct when there\'s some layout ' + |
| 'viewport scrolling as well.', |
| '6. Pinch-zoom out fully'); |
| |
| addManualTestStep( |
| function() { |
| continueBtn.remove(); |
| }, |
| null, |
| 'Test Complete'); |
| </script> |
| </html> |