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-rw-r--r--ext/mixed/js/scroll.js110
1 files changed, 0 insertions, 110 deletions
diff --git a/ext/mixed/js/scroll.js b/ext/mixed/js/scroll.js
deleted file mode 100644
index 33577795..00000000
--- a/ext/mixed/js/scroll.js
+++ /dev/null
@@ -1,110 +0,0 @@
-/*
- * Copyright (C) 2019-2021 Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-class WindowScroll {
- constructor(node) {
- this._node = node;
- this._animationRequestId = null;
- this._animationStartTime = 0;
- this._animationStartX = 0;
- this._animationStartY = 0;
- this._animationEndTime = 0;
- this._animationEndX = 0;
- this._animationEndY = 0;
- this._requestAnimationFrameCallback = this._onAnimationFrame.bind(this);
- }
-
- get x() {
- return this._node !== null ? this._node.scrollLeft : window.scrollX || window.pageXOffset;
- }
-
- get y() {
- return this._node !== null ? this._node.scrollTop : window.scrollY || window.pageYOffset;
- }
-
- toY(y) {
- this.to(this.x, y);
- }
-
- toX(x) {
- this.to(x, this.y);
- }
-
- to(x, y) {
- this.stop();
- this._scroll(x, y);
- }
-
- animate(x, y, time) {
- this._animationStartX = this.x;
- this._animationStartY = this.y;
- this._animationStartTime = window.performance.now();
- this._animationEndX = x;
- this._animationEndY = y;
- this._animationEndTime = this._animationStartTime + time;
- this._animationRequestId = window.requestAnimationFrame(this._requestAnimationFrameCallback);
- }
-
- stop() {
- if (this._animationRequestId === null) {
- return;
- }
-
- window.cancelAnimationFrame(this._animationRequestId);
- this._animationRequestId = null;
- }
-
- // Private
-
- _onAnimationFrame(time) {
- if (time >= this._animationEndTime) {
- this._scroll(this._animationEndX, this._animationEndY);
- this._animationRequestId = null;
- return;
- }
-
- const t = this._easeInOutCubic((time - this._animationStartTime) / (this._animationEndTime - this._animationStartTime));
- this._scroll(
- this._lerp(this._animationStartX, this._animationEndX, t),
- this._lerp(this._animationStartY, this._animationEndY, t)
- );
-
- this._animationRequestId = window.requestAnimationFrame(this._requestAnimationFrameCallback);
- }
-
- _easeInOutCubic(t) {
- if (t < 0.5) {
- return (4.0 * t * t * t);
- } else {
- t = 1.0 - t;
- return 1.0 - (4.0 * t * t * t);
- }
- }
-
- _lerp(start, end, percent) {
- return (end - start) * percent + start;
- }
-
- _scroll(x, y) {
- if (this._node !== null) {
- this._node.scrollLeft = x;
- this._node.scrollTop = y;
- } else {
- window.scroll(x, y);
- }
- }
-}