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add smoothscroll property

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This commit is contained in:
Shin'ya Ueoka 2018-01-13 15:31:39 +09:00
parent 42839161bb
commit 2ca1b54faa
4 changed files with 36 additions and 23 deletions
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36
src/content/scrolls.js
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@ -108,54 +108,62 @@ const roughScroll = (element, x, y) => {
element.scrollTo(x, y);
};
const scrollVertically = (count) => {
const scroll = (element, x, y, smooth) => {
if (smooth) {
smoothScroll(element, x, y);
} else {
roughScroll(element, x, y);
}
};
const scrollVertically = (count, smooth) => {
let target = scrollTarget();
let x = target.scrollLeft;
let y = target.scrollTop + SCROLL_DELTA_Y * count;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
const scrollHorizonally = (count) => {
const scrollHorizonally = (count, smooth) => {
let target = scrollTarget();
let x = target.scrollLeft + SCROLL_DELTA_X * count;
let y = target.scrollTop;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
const scrollPages = (count) => {
const scrollPages = (count, smooth) => {
let target = scrollTarget();
let height = target.clientHeight;
let x = target.scrollLeft;
let y = target.scrollTop + height * count;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
const scrollTop = () => {
const scrollTop = (smooth) => {
let target = scrollTarget();
let x = target.scrollLeft;
let y = 0;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
const scrollBottom = () => {
const scrollBottom = (smooth) => {
let target = scrollTarget();
let x = target.scrollLeft;
let y = target.scrollHeight;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
const scrollHome = () => {
const scrollHome = (smooth) => {
let target = scrollTarget();
let x = 0;
let y = target.scrollTop;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
const scrollEnd = () => {
const scrollEnd = (smooth) => {
let target = scrollTarget();
let x = target.scrollWidth;
let y = target.scrollTop;
roughScroll(target, x, y);
scroll(target, x, y, smooth);
};
export {