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Follow Mouse MFM
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2 changed files with 105 additions and 0 deletions
86
packages/client/src/components/CkFollowMouse.vue
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86
packages/client/src/components/CkFollowMouse.vue
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@ -0,0 +1,86 @@
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<!--
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SPDX-FileCopyrightText: leah and other Cutiekey contributors
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SPDX-License-Identifier: AGPL-3.0-only
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-->
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<template>
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<span ref="container" :class="$style.root">
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<span ref="el" :class="$style.inner" style="position: absolute">
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<slot></slot>
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</span>
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</span>
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</template>
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<script lang="ts" setup>
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import { onMounted, onUnmounted, shallowRef } from 'vue';
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const el = shallowRef<HTMLElement>();
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const container = shallowRef<HTMLElement>();
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const props = defineProps({
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x: {
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type: Boolean,
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default: true,
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},
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y: {
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type: Boolean,
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default: true,
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},
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speed: {
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type: String,
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default: '0.1s',
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},
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rotateByVelocity: {
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type: Boolean,
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default: true,
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},
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});
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let lastX = 0;
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let lastY = 0;
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let oldAngle = 0;
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function lerp(a, b, alpha) {
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return a + alpha * (b - a);
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}
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const updatePosition = (mouseEvent: MouseEvent) => {
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if (el.value && container.value) {
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const containerRect = container.value.getBoundingClientRect();
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const newX = mouseEvent.clientX - containerRect.left;
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const newY = mouseEvent.clientY - containerRect.top;
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let transform = `translate(calc(${props.x ? newX : 0}px - 50%), calc(${props.y ? newY : 0}px - 50%))`;
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if (props.rotateByVelocity) {
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const deltaX = newX - lastX;
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const deltaY = newY - lastY;
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const angle = lerp(
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oldAngle,
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Math.atan2(deltaY, deltaX) * (180 / Math.PI),
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0.1,
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);
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transform += ` rotate(${angle}deg)`;
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oldAngle = angle;
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}
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el.value.style.transform = transform;
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el.value.style.transition = `transform ${props.speed}`;
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lastX = newX;
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lastY = newY;
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}
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};
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onMounted(() => {
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window.addEventListener('mousemove', updatePosition);
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});
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onUnmounted(() => {
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window.removeEventListener('mousemove', updatePosition);
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});
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</script>
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<style lang="scss" module>
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.root {
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position: relative;
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display: inline-block;
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}
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.inner {
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transform-origin: center center;
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}
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</style>
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@ -1,6 +1,7 @@
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import { defineComponent, h } from "vue";
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import * as mfm from "@transfem-org/sfm-js";
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import type { VNode } from "vue";
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import CkFollowMouse from "./CkFollowMouse.vue";
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import MkUrl from "@/components/global/MkUrl.vue";
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import MkTime from '@/components/global/MkTime.vue';
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import MkLink from "@/components/MkLink.vue";
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@ -275,6 +276,24 @@ export default defineComponent({
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style = `transform: ${rotate}(${degrees}deg); transform-origin: center center;`;
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break;
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}
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case 'followmouse': {
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// Make sure advanced MFM is on and that reduced motion is off
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let x = (!!token.props.args.x);
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let y = (!!token.props.args.y);
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if (!x && !y) {
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x = true;
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y = true;
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}
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return h(CkFollowMouse, {
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x: x,
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y: y,
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speed: validTime(token.props.args.speed) ?? '0.1s',
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rotateByVelocity: !!token.props.args.rotateByVelocity,
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}, genEl(token.children));
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}
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case "position": {
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const x = parseFloat(token.props.args.x ?? "0");
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const y = parseFloat(token.props.args.y ?? "0");
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