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Allow for zoom on photo with mouse wheel

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This commit is contained in:
Keplyx 2018-06-15 16:32:23 +02:00
parent 5a66c19e4f
commit fcd23e7780
4 changed files with 82 additions and 23 deletions
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8
assets/css/photos.css
View file

@ -100,12 +100,14 @@
margin: 0;
padding: 0;
position: fixed;
max-width: 100%;
max-height: 100%;
z-index: 6;
left: 50%;
top: 50%;
max-width: none;
max-height: none;
transform: translate(-50%, -50%);
cursor: move;
box-shadow: 0 0 5px #000;
}
#close, #right, #left, #fullscreen, #download {
@ -234,7 +236,7 @@
position: fixed;
width: 100%;
height: 100%;
background-color: #212121;
background-color: #212121aa;
z-index: 5;
}

8
assets/scripts/jquery.mousewheel.min.js vendored Normal file
View file

@ -0,0 +1,8 @@
/*!
* jQuery Mousewheel 3.1.13
*
* Copyright 2015 jQuery Foundation and other contributors
* Released under the MIT license.
* http://jquery.org/license
*/
!function(a){"function"==typeof define&&define.amd?define(["jquery"],a):"object"==typeof exports?module.exports=a:a(jQuery)}(function(a){function b(b){var g=b||window.event,h=i.call(arguments,1),j=0,l=0,m=0,n=0,o=0,p=0;if(b=a.event.fix(g),b.type="mousewheel","detail"in g&&(m=-1*g.detail),"wheelDelta"in g&&(m=g.wheelDelta),"wheelDeltaY"in g&&(m=g.wheelDeltaY),"wheelDeltaX"in g&&(l=-1*g.wheelDeltaX),"axis"in g&&g.axis===g.HORIZONTAL_AXIS&&(l=-1*m,m=0),j=0===m?l:m,"deltaY"in g&&(m=-1*g.deltaY,j=m),"deltaX"in g&&(l=g.deltaX,0===m&&(j=-1*l)),0!==m||0!==l){if(1===g.deltaMode){var q=a.data(this,"mousewheel-line-height");j*=q,m*=q,l*=q}else if(2===g.deltaMode){var r=a.data(this,"mousewheel-page-height");j*=r,m*=r,l*=r}if(n=Math.max(Math.abs(m),Math.abs(l)),(!f||f>n)&&(f=n,d(g,n)&&(f/=40)),d(g,n)&&(j/=40,l/=40,m/=40),j=Math[j>=1?"floor":"ceil"](j/f),l=Math[l>=1?"floor":"ceil"](l/f),m=Math[m>=1?"floor":"ceil"](m/f),k.settings.normalizeOffset&&this.getBoundingClientRect){var s=this.getBoundingClientRect();o=b.clientX-s.left,p=b.clientY-s.top}return b.deltaX=l,b.deltaY=m,b.deltaFactor=f,b.offsetX=o,b.offsetY=p,b.deltaMode=0,h.unshift(b,j,l,m),e&&clearTimeout(e),e=setTimeout(c,200),(a.event.dispatch||a.event.handle).apply(this,h)}}function c(){f=null}function d(a,b){return k.settings.adjustOldDeltas&&"mousewheel"===a.type&&b%120===0}var e,f,g=["wheel","mousewheel","DOMMouseScroll","MozMousePixelScroll"],h="onwheel"in document||document.documentMode>=9?["wheel"]:["mousewheel","DomMouseScroll","MozMousePixelScroll"],i=Array.prototype.slice;if(a.event.fixHooks)for(var j=g.length;j;)a.event.fixHooks[g[--j]]=a.event.mouseHooks;var k=a.event.special.mousewheel={version:"3.1.12",setup:function(){if(this.addEventListener)for(var c=h.length;c;)this.addEventListener(h[--c],b,!1);else this.onmousewheel=b;a.data(this,"mousewheel-line-height",k.getLineHeight(this)),a.data(this,"mousewheel-page-height",k.getPageHeight(this))},teardown:function(){if(this.removeEventListener)for(var c=h.length;c;)this.removeEventListener(h[--c],b,!1);else this.onmousewheel=null;a.removeData(this,"mousewheel-line-height"),a.removeData(this,"mousewheel-page-height")},getLineHeight:function(b){var c=a(b),d=c["offsetParent"in a.fn?"offsetParent":"parent"]();return d.length||(d=a("body")),parseInt(d.css("fontSize"),10)||parseInt(c.css("fontSize"),10)||16},getPageHeight:function(b){return a(b).height()},settings:{adjustOldDeltas:!0,normalizeOffset:!0}};a.fn.extend({mousewheel:function(a){return a?this.bind("mousewheel",a):this.trigger("mousewheel")},unmousewheel:function(a){return this.unbind("mousewheel",a)}})});

85
assets/scripts/photosScript.js
View file

@ -1,11 +1,56 @@
var showcase = $("#img-big");
var showcaseButton = $("#photo-buttons");
var showcaseLink = $("#img_big_link");
var showcaseDownload = $("#img_big_download");
var photoOverlay = $("#photo-overlay");
var headerTop = $("#header-top");
var sideNav = $("#menuSidenav");
var loading = $("#loading");
let showcase = $("#img-big");
let showcaseButton = $("#photo-buttons");
let showcaseLink = $("#img_big_link");
let showcaseDownload = $("#img_big_download");
let photoOverlay = $("#photo-overlay");
let headerTop = $("#header-top");
let sideNav = $("#menuSidenav");
let loading = $("#loading");
$(document).ready(
function () {
showcase.bind("mousewheel", function(event, delta) {
let min_width = $(window).width() / 5;
let min_height = $(window).height() / 5;
let max_width = $(window).width() * 5;
let max_height = $(window).height() * 5;
let scale = 150 / 100;
if (delta < 0)
scale = 1/scale;
let cursorY = event.pageY - $(window).scrollTop();
let offsetX = event.pageX - (showcase.position().left + showcase.width()/2);
let offsetY = cursorY - (showcase.position().top + showcase.height()/2);
let new_width = showcase.width() * scale;
let new_height = showcase.height() * scale;
if (new_width > max_width || new_width < min_width)
new_width = 0;
if (new_height > max_height || new_height < min_height)
new_height = 0;
if (new_width !== 0 && new_height !== 0){
let new_left = event.pageX - (offsetX * scale);
let new_top = cursorY - (offsetY * scale);
showcase.width(new_width);
showcase.height(new_height);
if (new_height > $(window).height() || new_width > $(window).width()){
showcase.css('left', new_left +'px');
showcase.css('top', new_top +'px');
}
else{
showcase.css('left', $(window).width()/2 +'px');
showcase.css('top', $(window).height()/2 +'px');
}
}
return false;
});
}
);
/*
* Display selected image in showcase
@ -35,7 +80,7 @@ function closeBig() {
* Toggle display of buttons/header
*/
function toggleFullscreen() {
if (showcaseButton.css("display") == "none")
if (showcaseButton.css("display") === "none")
disableFullscreen();
else
enableFullscreen();
@ -59,7 +104,7 @@ function showTopBar() {
sideNav.fadeIn(500);
}
$(document).ready(function() {
$(document).ready(function () {
document.getElementById("photos_title").scrollIntoView();
});
@ -67,8 +112,8 @@ $(document).ready(function() {
/*
* Control images with keyboard arrows
*/
$(document).keydown(function(e) {
switch(e.which) {
$(document).keydown(function (e) {
switch (e.which) {
case 37: // left
displayNext(-1);
break;
@ -77,7 +122,8 @@ $(document).keydown(function(e) {
displayNext(1);
break;
default: return; // exit this handler for other keys
default:
return; // exit this handler for other keys
}
e.preventDefault(); // prevent the default action (scroll / move caret)
});
@ -94,19 +140,16 @@ var Swipe = new Hammer.Swipe();
manager.add(Swipe);
// Subscribe to the swipe event
manager.on('swipe', function(e) {
manager.on('swipe', function (e) {
var direction = e.offsetDirection;
if (direction === 4) { // right
displayNext(-1);
} else if (direction === 2){ // left
} else if (direction === 2) { // left
displayNext(1);
}
});
/*
* Display next/last image in showcase. When reaching end/start, loop back to start/end
*/
@ -138,11 +181,15 @@ function displayNext(direction) {
*/
function changeImage(thumb) {
displayLoading();
showcase.on('load', function() {
showcase.on('load', function () {
hideLoading();
});
var source = getSourceFromThumbnail(thumb);
showcase.attr("src", source);
showcase.css({
width: 'auto',
height: '90%'
});
showcaseLink.attr("href", source);
showcaseDownload.attr("href", source);
}

4
photos.php
View file

@ -220,7 +220,8 @@ function generatePath($path)
?>
<div id="photo-overlay" style="display:none">
<img src="" id="img-big" onclick="toggleFullscreen()">
<img src="" id="img-big">
<div id="close-back" onclick="closeBig()"></div>
<div id="loading" onclick="closeBig()">
<i class="fas fa-spinner fa-spin"></i>
@ -284,6 +285,7 @@ $pageTitle = "Photos";
ob_start(); // Start reading html
?>
<link rel="stylesheet" type="text/css" media="screen" href="assets/css/photos.css">
<script type="text/javascript" src="assets/scripts/jquery.mousewheel.min.js"></script>
<?php
$pageMeta = ob_get_clean(); // Store html content in variable
include("template.php"); // Display template with variable content