| <!doctype html> |
| <script src="../../../resources/testharness.js"></script> |
| <script src="../../../resources/testharnessreport.js"></script> |
| <style> |
| body { |
| margin: 0; |
| width: 2000px; |
| height: 2000px; |
| } |
| </style> |
| <h1>Viewport: Scale is inert</h1> |
| <h4> |
| Test Description: This test checks that window scroll and size properties |
| are unaffected by page scale. |
| </h4> |
| <script> |
| addEventListener("load", function() { |
| if (!window.internals) |
| return; |
| |
| var initialWidth = window.innerWidth; |
| var initialHeight = window.innerHeight; |
| |
| // Zoom into the page, innerWidth and innerHeight shouldn't be affected. |
| window.internals.setPageScaleFactor(2); |
| |
| test(function() { |
| assert_equals(window.innerWidth, initialWidth); |
| assert_equals(window.innerHeight, initialHeight); |
| }, "window.innerWidth and window.innerHeight don't change"); |
| |
| // Pan just the visual viepwort. scrollX and scrollY shouldn't be |
| // affected. |
| window.internals.setVisualViewportOffset(10, 20); |
| |
| test(function() { |
| assert_equals(window.scrollX, 0); |
| assert_equals(window.scrollY, 0); |
| assert_equals(window.visualViewport.offsetLeft, 10); |
| assert_equals(window.visualViewport.offsetTop, 20); |
| }, "window.scrollX and window.scrollY don't change when visual viewport moved."); |
| |
| // Scroll to maximum extent |
| window.scrollTo(2000, 2000); |
| |
| test(function() { |
| assert_equals(window.scrollX, 1200); |
| assert_equals(window.scrollY, 1400); |
| assert_equals(window.visualViewport.offsetLeft, 10); |
| assert_equals(window.visualViewport.offsetTop, 20); |
| }, "Visual viewport not moved by window.scrollTo"); |
| }); |
| </script> |
