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Added scroll-snapping #15

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33 changes: 24 additions & 9 deletions src/App.tsx
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Original file line number Diff line number Diff line change
@@ -1,6 +1,6 @@
import theme from "./theme";
import { ThemeProvider } from "@emotion/react";
import { useState } from "react";
import { useState, useRef, useEffect } from "react";
import Hero from "./views/Hero";
import Navbar from "./components/Navbar";
import WeAreSprout from "./views/WeAreSprout";
Expand All @@ -9,23 +9,38 @@ import OurVision from "./views/OurVision";
import OurCases from "./views/OurCases";
import Contact from "./views/Contact";
import { useCurrentView } from "./hooks";

import styled from "@emotion/styled";
function App() {
useCurrentView();

const [introVisited, setIntroVisited] = useState(false);
const scrollContainer = useRef(null);

return (
<ThemeProvider theme={theme}>
{!introVisited && <Wave setIntroVisited={setIntroVisited}></Wave>}
<Navbar showMenu={true}></Navbar>
<Hero></Hero>
<WeAreSprout></WeAreSprout>
<OurVision></OurVision>
<OurCases></OurCases>
<Contact></Contact>
<ScrollSnapContainer ref={scrollContainer} >
{!introVisited && <Wave setIntroVisited={setIntroVisited}></Wave>}
<Navbar introVisited={introVisited} scrollContainer={scrollContainer}></Navbar>
<Hero></Hero>
<WeAreSprout></WeAreSprout>
<OurVision></OurVision>
<OurCases></OurCases>
<Contact></Contact>
</ScrollSnapContainer>
</ThemeProvider>
);
}

const ScrollSnapContainer = styled.div`
position : relative;
scroll-snap-type: y mandatory;
height : 100%;
scroll-behavior: smooth;
overflow : auto;
> * {
scroll-snap-align: start;
}
`;


export default App;
102 changes: 62 additions & 40 deletions src/components/Navbar.tsx
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
import { useState, useEffect } from "react";
import { useState, useEffect, Ref } from "react";
import styled from "@emotion/styled";
import { css } from "@emotion/react";

Expand All @@ -7,11 +7,14 @@ import HamburgerMenu from "./HamburgerMenu";
import { mq } from "../theme";
import NavLink from "./NavLink";


interface Props {
showMenu: boolean;
introVisited: boolean;
scrollContainer : React.MutableRefObject<HTMLDivElement | null>
}

function Navbar({ showMenu }: Props) {
function Navbar({ scrollContainer, introVisited }: Props) {

function handleOpen(open: boolean) {
if (open) {
document.documentElement.classList.add("fullscreen-modal");
Expand All @@ -20,64 +23,77 @@ function Navbar({ showMenu }: Props) {
}
setOpen(open);
}

const [fixed, setFixed] = useState(false);
const [open, setOpen] = useState(false);
const [visible, setVisible] = useState(true);
const [visible, setVisible] = useState(false);

useEffect(() => {
if(scrollContainer.current) {

setVisible(scrollContainer.current?.scrollTop > 0 || scrollContainer.current?.scrollTop === 0 && introVisited)

type ScrollDirection = "up" | "down";

const scrollOffset = 50;
const visibleOffset = -100;
const fixedOffset = 0;

let prevScrollPos = window.scrollY;
let prevScrollPos = scrollContainer.current?.scrollTop;
let totalScrollDiff = 0;
let prevScrollDirection: ScrollDirection = "down";

const handleScroll = () => {
const currentScrollPos = window.scrollY;
const scrollDirection = prevScrollPos > currentScrollPos ? "up" : "down";
let alwaysVisible = false;

// Handle fixed/static menu
const homeRect = document.getElementById("Home")?.getBoundingClientRect();
if (homeRect) {
if (homeRect.top > visibleOffset) {
alwaysVisible = true;
}

if (homeRect.top < fixedOffset && scrollDirection == "up") {
setFixed(true);
} else {
setFixed(false);
if(scrollContainer.current) {
setVisible(scrollContainer.current?.scrollTop > 0 || scrollContainer.current?.scrollTop === 0 && introVisited)
const currentScrollPos = scrollContainer.current?.scrollTop;
if(currentScrollPos) {
const scrollDirection = prevScrollPos > currentScrollPos ? "up" : "down";
let alwaysVisible = false;

// Handle fixed/static menu
const homeRect = document.getElementById("Home")?.getBoundingClientRect();
if (homeRect) {
if (homeRect.top > visibleOffset) {
alwaysVisible = true;
}

if (homeRect.top < fixedOffset && scrollDirection == "up") {
setFixed(scrollContainer.current?.scrollTop > 10 && introVisited || scrollContainer.current?.scrollTop !== 0 && !introVisited );

} else {
setFixed(false);
}
}

if (scrollDirection === prevScrollDirection) {
totalScrollDiff += currentScrollPos - prevScrollPos;
} else {
totalScrollDiff = 0;
prevScrollDirection = scrollDirection;
}

if (Math.abs(totalScrollDiff) > scrollOffset || alwaysVisible) {
setVisible(scrollDirection === "up" ? true : alwaysVisible);
}

prevScrollPos = currentScrollPos;
}
}

if (scrollDirection === prevScrollDirection) {
totalScrollDiff += currentScrollPos - prevScrollPos;
} else {
totalScrollDiff = 0;
prevScrollDirection = scrollDirection;
}

if (Math.abs(totalScrollDiff) > scrollOffset || alwaysVisible) {
setVisible(scrollDirection === "up" ? true : alwaysVisible);
}

prevScrollPos = currentScrollPos;


};

window.addEventListener("scroll", handleScroll, { passive: true });
scrollContainer.current.addEventListener("scroll", handleScroll, { passive: true });
return () => {
window.removeEventListener("scroll", handleScroll);
scrollContainer.current?.removeEventListener("scroll", handleScroll);
};
}, []);
}
}, [scrollContainer, introVisited]);

return (
<Nav fixed={fixed} open={open} visible={visible}>
{showMenu && (
{(
<>
<NavHeader>
<NavLink id={"#Contact"} title="Contact" subtitle="We are sprout" text="Lorum ipsum"></NavLink>
Expand Down Expand Up @@ -118,8 +134,9 @@ const NavHeader = styled.header`
`;

const Nav = styled.nav<{ fixed: boolean; open: boolean; visible: boolean }>`
position: absolute;
top: auto;
position: fixed;

top: 0;
z-index: 10;
background: ${(props) => (props.open ? "black" : "transparent")};
display: flex;
Expand All @@ -131,12 +148,17 @@ const Nav = styled.nav<{ fixed: boolean; open: boolean; visible: boolean }>`
transition: opacity 0.2s linear;
opacity: ${(props) => (props.visible ? "1" : "0")};

${mq["sm"]} {
right : 1rem;
}

${(props) =>
props.fixed &&
css`
position: fixed;
top: 0;
background: black;

`}

${(props) =>
Expand Down
11 changes: 9 additions & 2 deletions src/index.css
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Original file line number Diff line number Diff line change
Expand Up @@ -40,13 +40,19 @@ body {
-webkit-overflow-scrolling: touch;
}

#root {
overflow: hidden;
height : 100%;

}

html,
body {
padding: 0;
margin: 0;
overflow-y: auto;
overflow-y: hidden;
background-color: rgba(255 255 255 / 100%);

height : 100%;
.circle {
width: 20px;
height: 20px;
Expand All @@ -66,6 +72,7 @@ body * {
-webkit-tap-highlight-color: transparent;
user-select: none;
-webkit-user-drag: none;

}

:root {
Expand Down