Fullscreen Scrolling Slideshow

import { lerp, getCursorPos } from './utils';

// Track the cursor position
let cursor = {x: 0, y: 0};
window.addEventListener('mousemove', ev => cursor = getCursorPos(ev));

/**
 * Class representing a .cursor element
 */
export class CursorText {
	// DOM elements
	DOM = {
		// Main element (.cursor)
		el: null,
		// Inner element (.cursor__text)
		text: null,
	}
	// Element style properties
	renderedStyles = {
		// With interpolation, we can achieve a smooth animation effect when moving the cursor. 
		// The "previous" and "current" values are the values that will interpolate. 
		// The returned value will be one between these two (previous and current) at a specific increment. 
		// The "amt" is the amount to interpolate. 
		// As an example, the following formula calculates the x-axis translation value to apply to the cursor element:
		// this.renderedStyles.tx.previous = lerp(this.renderedStyles.tx.previous, this.renderedStyles.tx.current, this.renderedStyles.tx.amt);
		
		// translation values
		// The lower the amt, the slower the cursor "follows" the user gesture
		tx: {previous: 0, current: 0, amt: 0.15},
		ty: {previous: 0, current: 0, amt: 0.15},
	};
	// Element size and position
	bounds;

	/**
	 * Constructor.
	 */
	constructor(DOM_el) {
		this.DOM.el = DOM_el;
		this.DOM.text = this.DOM.el.querySelector('.cursor__text');
		
		// Hide it initially
		this.DOM.el.style.opacity = 0;
		
		// Calculate size and position
		this.bounds = this.DOM.el.getBoundingClientRect();

		for (const key in this.renderedStyles) {
			this.renderedStyles[key].amt = this.DOM.el.dataset.amt || this.renderedStyles[key].amt;
		}
		
		// Show the element and start tracking its position as soon as the user moves the cursor.
		const onMouseMoveEv = () => {
			// Set up the initial values to be the same
			this.renderedStyles.tx.previous = this.renderedStyles.tx.current = cursor.x + 20;
			this.renderedStyles.ty.previous = this.renderedStyles.ty.previous = cursor.y - this.bounds.height/2;
			// Show it
			this.DOM.el.style.opacity = 1;
			// Start rAF loop
			requestAnimationFrame(() => this.render());
			// Remove the initial mousemove event
			window.removeEventListener('mousemove', onMouseMoveEv);
		};
		window.addEventListener('mousemove', onMouseMoveEv);
	}

	/**
	 * Loop / Interpolation
	 */
	render() {
		// New cursor positions
		this.renderedStyles['tx'].current = cursor.x + 20;
		this.renderedStyles['ty'].current = cursor.y - this.bounds.height/2;
		
		// Interpolation
		for (const key in this.renderedStyles ) {
			this.renderedStyles[key].previous = lerp(this.renderedStyles[key].previous, this.renderedStyles[key].current, this.renderedStyles[key].amt);
		}
		
		// Apply interpolated values (smooth effect)
		this.DOM.el.style.transform = `translateX(${(this.renderedStyles['tx'].previous)}px) translateY(${this.renderedStyles['ty'].previous}px)`;

		// loop...
		requestAnimationFrame(() => this.render());
	}
}

import { gsap } from 'gsap';
import "splitting/dist/splitting.css";
import "splitting/dist/splitting-cells.css";
import Splitting from "splitting";
import { preloadImages } from './utils';
import { CursorText } from './cursor';
import { Slide } from './slide';
import { Observer } from 'gsap/Observer.js';
gsap.registerPlugin(Observer);

// Call the splittingjs to transform the data-splitting texts to spans of chars 
Splitting();

// Some DOM elements
const DOM = {
    slides: [...document.querySelectorAll('.slide')],
    cursor: document.querySelector('.cursor'),
    backCtrl: document.querySelector('.frame__back'),
    navigationItems: document.querySelectorAll('.frame__nav > .frame__nav-button'),
};
// cursor text chars
DOM.cursorChars = DOM.cursor.querySelectorAll('.word > .char, .whitespace');
// backCtrl text chars
DOM.backChars = DOM.backCtrl.querySelectorAll('.word > .char, .whitespace');

// total number of slides
const totalSlides = DOM.slides.length;

let slidesArr = [];
DOM.slides.forEach(slide => {
    slidesArr.push(new Slide(slide));
});

// current slide position
let current = -1;
// check if animation is in progress
let isAnimating = false;


const setCurrentSlide = position => {
    if ( current !== -1 ) {
        slidesArr[current].DOM.el.classList.remove('slide--current');
    }

    current = position;
    slidesArr[current].DOM.el.classList.add('slide--current');

    DOM.navigationItems[current].classList.add('frame__nav-button--current');
};

const next = () => {
    const newPosition = current < totalSlides - 1 ? current + 1 : 0;
    navigate(newPosition);
};

const prev = () => {
    const newPosition = current > 0 ? current - 1 : totalSlides - 1;
    navigate(newPosition);
};

const navigate = newPosition => {
    isAnimating = true;
    
    // change navigation current class
    DOM.navigationItems[current].classList.remove('frame__nav-button--current');
    DOM.navigationItems[newPosition].classList.add('frame__nav-button--current');
    
    // navigation direction
    const direction = current < newPosition ? current === 0 && newPosition === totalSlides - 1 ? 'prev' : 'next' : current === totalSlides - 1 && newPosition === 0 ? 'next' : 'prev';
    
    const currentSlide = slidesArr[current];
    current = newPosition;
    const upcomingSlide = slidesArr[current];

    gsap.timeline({
        defaults: {
            duration: 1.6,
            ease: 'power3.inOut'
        },
        onComplete: () => {
            currentSlide.DOM.el.classList.remove('slide--current');
            // Close the current slide if it was open
            if ( currentSlide.isOpen ) {
                hideContent(currentSlide);
            }

            isAnimating = false;
        }
    })
    .addLabel('start', 0)

    .set([currentSlide.DOM.imgInner, upcomingSlide.DOM.imgInner], {
        transformOrigin: direction === 'next' ? '50% 0%' : '50% 100%'
    }, 'start')

    // Place coming slide either above (translate -100%) or below (translate 100%) and the slide__inner to the opposite translate.
    .set(upcomingSlide.DOM.el, {
        yPercent: direction === 'next' ? 100 : -100
    }, 'start')
    .set(upcomingSlide.DOM.inner, {
        yPercent: direction === 'next' ? -100 : 100
    }, 'start')
    
    // Add current class
    .add(() => {
        upcomingSlide.DOM.el.classList.add('slide--current');
    }, 'start')

    // hide the back button and show back the cursor text if the current slide was open
    .add(() => {
        if ( currentSlide.isOpen ) {
            toggleCursorBackTexts();
        }
    }, 'start')
    
    // Current slide moves either up or down (translate 100% or -100%)
    .to(currentSlide.DOM.el, {
        yPercent: direction === 'next' ? -100 : 100
    }, 'start')
    .to(currentSlide.DOM.imgInner, {
        scaleY: 2
    }, 'start')
    // Upcoming slide translates to 0
    .to([upcomingSlide.DOM.el, upcomingSlide.DOM.inner], {
        yPercent: 0
    }, 'start')
    .to(upcomingSlide.DOM.imgInner, {
        ease: 'power2.inOut',
        startAt: {scaleY: 2},
        scaleY: 1
    }, 'start')
};

const toggleCursorBackTexts = isContent => {
    return gsap.timeline({
        onStart: () => {
            gsap.set(DOM.backChars, {opacity: isContent ? 0 : 1});
            if ( isContent ) {
                DOM.backCtrl.classList.add('frame__back--show');
            }
        },
        onComplete: () => {
            DOM.backCtrl.classList[isContent ? 'add' : 'remove']('frame__back--show');
            if ( !isContent ) {
                DOM.backCtrl.classList.remove('frame__back--show');
            }
        }
    })
    .to(DOM.cursorChars, {
        duration: 0.1,
        ease: 'expo',
        opacity: isContent ? 0 : 1,
        stagger: {
            amount: 0.5,
            grid: 'auto',
            from: 'random'
        }
    })
    .to(DOM.backChars, {
        duration: 0.1,
        ease: 'expo',
        opacity: isContent ? 1 : 0,
        stagger: {
            amount: 0.5,
            grid: 'auto',
            from: 'random'
        }
    }, 0);
};

const showContent = position => {
    if ( isAnimating ) return;
    isAnimating = true;

    const slide = slidesArr[position];

    slide.isOpen = true;

    gsap.timeline({
        defaults: {
            duration: 1.6,
            ease: 'power3.inOut'
        },
        onStart: () => {
            
        },
        onComplete: () => {
            isAnimating = false;
        }
    })
    .addLabel('start', 0)
    .add(() => {
        toggleCursorBackTexts('content');
    }, 'start')
    .to(slide.DOM.img, {
        yPercent: -100
    }, 'start')
    .set(slide.DOM.imgInner, {
        transformOrigin: '50% 100%'
    }, 'start')
    .to(slide.DOM.imgInner, {
        yPercent: 100,
        scaleY: 2
    }, 'start')
    .to(slide.DOM.contentImg, {
        startAt: {
            transformOrigin: '50% 0%',
            scaleY: 1.5
        },
        scaleY: 1
    }, 'start')
};

const hideContent = (slide, animate = false) => {
    // reset values
    isAnimating = true;

    const complete = () => {
        slide.isOpen = false;
        isAnimating = false;
    };

    if ( animate ) {
        gsap.timeline({
            defaults: {
                duration: 1.6,
                ease: 'power3.inOut'
            },
            onComplete: complete
        })
        .addLabel('start', 0)
        .to(slide.DOM.img, {
            yPercent: 0
        }, 'start')
        .to(slide.DOM.imgInner, {
            yPercent: 0,
            scaleY: 1
        }, 'start');
    }
    else {
        gsap.set(slide.DOM.img, {
            yPercent: 0
        });
        gsap.set(slide.DOM.imgInner, {
            yPercent: 0,
            scaleY: 1
        });
        complete();
    }
};

const initEvents = () => {
    // Links navigation
    [...DOM.navigationItems].forEach((item, position) => {
        item.addEventListener('click', () => {
            if ( current === position || isAnimating ) return;
            navigate(position);
        });
    });

    // Back click
    DOM.backCtrl.addEventListener('click', () => {
        if ( isAnimating ) return;
        isAnimating = true;
        toggleCursorBackTexts();
        hideContent(slidesArr[current], true);
    });

    // Initialize the GSAP Observer plugin
    Observer.create({
        type: 'wheel,touch,pointer',
        onDown: () => !isAnimating && prev(),
        onUp: () => !isAnimating && next(),
        // invert the mouse wheel delta
        wheelSpeed: -1,
        tolerance: 10
    });

    for (const [position, slide] of slidesArr.entries()) {
        slide.DOM.img.addEventListener('click', () => {
            showContent(position);
        });
    }
};

// Set current slide
setCurrentSlide(0);

// Initialize custom cursor
new CursorText(DOM.cursor);

// Initialize the events
initEvents();

// Preload images and initialize scrolling animations
preloadImages('.slide__img-inner').then( _ => {
	document.body.classList.remove('loading');
});

/**
 * Class representing a Slide element (.slide)
 */
export class Slide {
	// DOM elements
	DOM = {
		// main element (.slide)
		el: null,
		// slide inner element (.slide__inner)
		inner: null,
        // slide image element (.slide__img)
        img: null,
        // slide image inner element (.slide__img-inner)
        imgInner: null,
        // slide content element (.slide__content)
        content: null,
        // slide content image (slide__content-img)
        contentImg: null,
        // other content elements besides the image
        contentTexts: null,
	};
	
	/**
	 * Constructor.
	 * @param {Element} DOM_el - main element (.slide)
	 */
	constructor(DOM_el) {
        this.DOM.el = DOM_el;
        this.DOM.inner = this.DOM.el.querySelector('.slide__inner');
        this.DOM.img = this.DOM.el.querySelector('.slide__img');
        this.DOM.imgInner = this.DOM.el.querySelector('.slide__img-inner');
        this.DOM.content = this.DOM.el.querySelector('.slide__content');
        this.DOM.contentImg = this.DOM.content.querySelector('.slide__content-img');
        this.DOM.contentTexts = [...this.DOM.content.children].filter(item => item != this.DOM.contentImg);
	}
}

const imagesLoaded = require('imagesloaded');

/**
 * Preload images
 * @param {String} selector - Selector/scope from where images need to be preloaded. Default is 'img'
 */
const preloadImages = (selector = 'img') => {
    return new Promise((resolve) => {
        imagesLoaded(document.querySelectorAll(selector), {background: true}, resolve);
    });
};

/**
 * Linear interpolation
 * @param {Number} a - first value to interpolate
 * @param {Number} b - second value to interpolate 
 * @param {Number} n - amount to interpolate
 */
 const lerp = (a, b, n) => (1 - n) * a + n * b;

 /**
  * Gets the cursor position
  * @param {Event} ev - mousemove event
  */
 const getCursorPos = ev => {
     return { 
         x : ev.clientX, 
         y : ev.clientY 
     };
 };

export {
    preloadImages,
    lerp,
    getCursorPos,
};

README.md
## Credits

- Images from [Unsplash](https://unsplash.com/)


## License
[MIT](LICENSE)

Made with :blue_heart:  by [Codrops](http://www.codrops.com)

MIT License

Copyright (c) 2009 - 2021 [Codrops](https://tympanus.net/codrops)

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

GSAP standard license snapshot
Source: https://gsap.com/community/standard-license/
Retrieved: 2026-09-22T04:22:49.089Z
Original distribution copyright and version headers remain in the runtime code.

Standard "No Charge" GSAP License

 I. DEFINITIONS

 “GSAP License” means the terms and conditions of this GSAP Software License Agreement.

 "GSAP Products" means any Software made available at gsap.com (https://gsap.com) or any successor sites, including but not limited to the GSAP animation library and related plugins, tools, or extensions.

 "Permitted Uses" means the implementation and/or use of GSAP Products on any website, web application, or digital interface by any person or entity (which may include, for clarity, those of companies that compete with Webflow in other areas of business).

 "Prohibited Uses" means any implementation and/or use of GSAP Products in tools that allow users to build visual animations without code that encourages, induces, or materially assists in creating a solution that competes with Webflow’s visual animation building capabilities.

 "Competitive Products" means any software, tool, or service that enables users to create, edit, or manage animations through a visual interface or builder similar to Webflow (https://webflow.com).

 II. GRANT OF LICENSE

 Subject to the terms and conditions of this GSAP License, Webflow grants you a non-exclusive, worldwide license to use, reproduce, display, and implement GSAP Products solely for Permitted Uses.

 III. RESTRICTIONS

 You may not:

 Use any GSAP Products for any Prohibited Uses without prior written consent;

 Reverse engineer any GSAP Products for the purpose of creating Competitive Products;

 Remove or alter any proprietary notices or branding from GSAP Products.

 IV. OWNERSHIP AND INTELLECTUAL PROPERTY

 All intellectual property rights in GSAP Products, including but not limited to copyright, patents, trademarks, and trade secrets, remain the exclusive property of Webflow. This GSAP License does not transfer any ownership rights in GSAP Products to you.

 V. TERMINATION

 Webflow may terminate this GSAP License and revoke your access in its discretion if you fail to comply with any of these terms and conditions. Upon termination, you must cease all use of GSAP Products and destroy all copies in your possession.

 VI. MISCELLANEOUS PROVISIONS

 General: This GSAP License is incorporated into and subject to Webflow’s Terms of Service available here (https://webflow.com/legal/terms) ("Terms of Service"). In the event of any conflict or inconsistency between this GSAP License and the Terms of Service, the terms of this GSAP License shall govern in relation to your use of any GSAP Products.

 Amendments: Webflow reserves the right to update or modify this GSAP License at any time by posting the revised terms on this website, provided that any such updates or modifications shall not result in any material degradation to the security, integrity, or functionality of any GSAP Products. You understand and agree that your continued use of any GSAP Products after such revisions to this GSAP License constitutes your acceptance of this GSAP License as revised. If you do not accept the revised GSAP License, you are prohibited from using versions of the GSAP Products released after the effective date of the revised GSAP License (as well as any updates made to previous versions). Notwithstanding, you may continue using previous versions of GSAP Products under the applicable terms licensed to you prior to the effective date of the revised GSAP License (for clarity, excluding any updates made thereto).

 No Waiver: Failure of Webflow to enforce any provision of this GSAP License shall not constitute a waiver of future enforcement of that or any other provision.

 FAQ

 Is it acceptable for AI tools like ChatGPT, Cursor, Lovable, Webstudio, etc. to generate GSAP code?
 Absolutely! AI-generated code is not a "Prohibited Use".

 What if a WordPress plugin or theme or other niche tool allows users to create GSAP-driven effects through a visual interface? Is that prohibited?
 We want to encourage developers to build on top of GSAP, including visual tools that don't directly compete with Webflow's rich animation-building capabilities. If you are not sure if your product might be considered a "Prohibited Use", feel free to contact us (https://gsap.com/contact) so we can talk through it!

 Can I really use GSAP in commercial projects without paying anything?
 Yes, really! Commercial usage is covered under the standard license. All of GSAP including the plugins that were formerly "members-only" like SplitText (https://gsap.com/docs/v3/Plugins/SplitText/) and MorphSVG (https://gsap.com/docs/v3/Plugins/MorphSVGPlugin) can be used in commercial projects at no charge. Enjoy! 💚

 Effective date: April 30, 2025

 Last modified date: May 30, 2025

 Copyright (©) 2025, Webflow


splitting@1.1.0 — LICENSE.md
MIT License

Copyright (c) 2018 Stephen Shaw

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.


ev-emitter@2.1.2 — LICENSE.md
Copyright (c) 2016-2021 [David DeSandro](https://desandro.com)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.


imagesloaded@5.0.0 — LICENSE.md
Copyright (c) 2011-2022 [David DeSandro](https://desandro.com) and [contributors](https://github.com/desandro/imagesloaded/graphs/contributors)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.