| <!DOCTYPE html> |
| <meta charset="utf-8"> |
| <title>ScrollTimeline current time algorithm - interaction with writing modes</title> |
| <link rel="help" href="https://wicg.github.io/scroll-animations/#current-time-algorithm"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="./testcommon.js"></script> |
| |
| <body></body> |
| |
| <script> |
| 'use strict'; |
| |
| promise_test(async t => { |
| const scrollerOverrides = new Map([['direction', 'rtl']]); |
| const scroller = setupScrollTimelineTest(scrollerOverrides); |
| const verticalScrollRange = scroller.scrollHeight - scroller.clientHeight; |
| const horizontalScrollRange = scroller.scrollWidth - scroller.clientWidth; |
| |
| const blockScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'block'}); |
| const inlineScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'inline'}); |
| const horizontalScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'horizontal'}); |
| const verticalScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'vertical'}); |
| |
| // Unscrolled, all timelines should read a current time of 0 even though the |
| // X-axis will have started at the right hand side for rtl. |
| assert_percents_equal(blockScrollTimeline.currentTime, 0, |
| 'Unscrolled block timeline'); |
| assert_percents_equal(inlineScrollTimeline.currentTime, 0, |
| 'Unscrolled inline timeline'); |
| assert_percents_equal(horizontalScrollTimeline.currentTime, 0, |
| 'Unscrolled horizontal timeline'); |
| assert_percents_equal(verticalScrollTimeline.currentTime, 0, |
| 'Unscrolled vertical timeline'); |
| |
| // The offset in the inline/horizontal direction should be inverted. The |
| // block/vertical direction should be unaffected. |
| scroller.scrollTop = 0.1 * verticalScrollRange; |
| scroller.scrollLeft = -0.8 * horizontalScrollRange; |
| // Wait for new animation frame which allows the timeline to compute new |
| // current time. |
| await waitForNextFrame(); |
| |
| assert_percents_equal(blockScrollTimeline.currentTime, 10, |
| 'Scrolled block timeline'); |
| assert_percents_equal(inlineScrollTimeline.currentTime, 80, |
| 'Scrolled inline timeline'); |
| assert_percents_equal(horizontalScrollTimeline.currentTime, 80, |
| 'Scrolled horizontal timeline'); |
| assert_percents_equal(verticalScrollTimeline.currentTime, 10, |
| 'Scrolled vertical timeline'); |
| }, 'currentTime handles direction: rtl correctly'); |
| |
| promise_test(async t => { |
| const scrollerOverrides = new Map([['writing-mode', 'vertical-rl']]); |
| const scroller = setupScrollTimelineTest(scrollerOverrides); |
| const verticalScrollRange = scroller.scrollHeight - scroller.clientHeight; |
| const horizontalScrollRange = scroller.scrollWidth - scroller.clientWidth; |
| |
| const blockScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'block'}); |
| const inlineScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'inline'}); |
| const horizontalScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'horizontal'}); |
| const verticalScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'vertical'}); |
| |
| // Unscrolled, all timelines should read a current time of 0 even though the |
| // X-axis will have started at the right hand side for vertical-rl. |
| assert_percents_equal(blockScrollTimeline.currentTime, 0, |
| 'Unscrolled block timeline'); |
| assert_percents_equal(inlineScrollTimeline.currentTime, 0, |
| 'Unscrolled inline timeline'); |
| assert_percents_equal(horizontalScrollTimeline.currentTime, 0, |
| 'Unscrolled horizontal timeline'); |
| assert_percents_equal(verticalScrollTimeline.currentTime, 0, |
| 'Unscrolled vertical timeline'); |
| |
| // For vertical-rl, the X-axis starts on the right-hand-side and is the block |
| // axis. The Y-axis is normal but is the inline axis. For the |
| // horizontal/vertical cases, horizontal starts on the right-hand-side and |
| // vertical is normal. |
| scroller.scrollTop = 0.1 * verticalScrollRange; |
| scroller.scrollLeft = -0.8 * horizontalScrollRange; |
| // Wait for new animation frame which allows the timeline to compute new |
| // current time. |
| await waitForNextFrame(); |
| |
| assert_percents_equal(blockScrollTimeline.currentTime, 80, |
| 'Scrolled block timeline'); |
| assert_percents_equal(inlineScrollTimeline.currentTime, 10, |
| 'Scrolled inline timeline'); |
| assert_percents_equal(horizontalScrollTimeline.currentTime, 80, |
| 'Scrolled horizontal timeline'); |
| assert_percents_equal(verticalScrollTimeline.currentTime, 10, |
| 'Scrolled vertical timeline'); |
| }, 'currentTime handles writing-mode: vertical-rl correctly'); |
| |
| promise_test(async t => { |
| const scrollerOverrides = new Map([['writing-mode', 'vertical-lr']]); |
| const scroller = setupScrollTimelineTest(scrollerOverrides); |
| const verticalScrollRange = scroller.scrollHeight - scroller.clientHeight; |
| const horizontalScrollRange = scroller.scrollWidth - scroller.clientWidth; |
| |
| const blockScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'block'}); |
| const inlineScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'inline'}); |
| const horizontalScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'horizontal'}); |
| const verticalScrollTimeline = new ScrollTimeline( |
| {source: scroller, orientation: 'vertical'}); |
| |
| // Unscrolled, all timelines should read a current time of 0. |
| assert_percents_equal(blockScrollTimeline.currentTime, 0, |
| 'Unscrolled block timeline'); |
| assert_percents_equal(inlineScrollTimeline.currentTime, 0, |
| 'Unscrolled inline timeline'); |
| assert_percents_equal(horizontalScrollTimeline.currentTime, 0, |
| 'Unscrolled horizontal timeline'); |
| assert_percents_equal(verticalScrollTimeline.currentTime, 0, |
| 'Unscrolled vertical timeline'); |
| |
| // For vertical-lr, both axes start at their 'normal' positions but the X-axis |
| // is the block direction and the Y-axis is the inline direction. This does |
| // not affect horizontal/vertical. |
| scroller.scrollTop = 0.1 * verticalScrollRange; |
| scroller.scrollLeft = 0.2 * horizontalScrollRange; |
| // Wait for new animation frame which allows the timeline to compute new |
| // current time. |
| await waitForNextFrame(); |
| |
| assert_percents_equal(blockScrollTimeline.currentTime, 20, |
| 'Scrolled block timeline'); |
| assert_percents_equal(inlineScrollTimeline.currentTime, 10, |
| 'Scrolled inline timeline'); |
| assert_percents_equal(horizontalScrollTimeline.currentTime, 20, |
| 'Scrolled horizontal timeline'); |
| assert_percents_equal(verticalScrollTimeline.currentTime, 10, |
| 'Scrolled vertical timeline'); |
| }, 'currentTime handles writing-mode: vertical-lr correctly'); |
| </script> |