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index.html
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<!DOCTYPE html>
<html lang="en">
<title>Badge Generator - OMG - Developer Student Clubs</title>
<meta
name="description"
content="Badge Generator - OMG - Developer Student Clubs"
/>
<meta name="viewport" content="width=device-width, initial-scale=1" />
<link rel="shortcut icon" href="./favicon.png" />
<link
crossorigin="anonymous"
href="https://fonts.googleapis.com/icon?family=Google+Sans:400&display=swap"
rel="stylesheet"
/>
<style>
* {
box-sizing: border-box;
--shadow-elevation-1: 0 2px 4px -1px rgba(0, 0, 0, 0.2),
0 4px 5px 0 rgba(0, 0, 0, 0.14), 0 1px 10px 0 rgba(0, 0, 0, 0.12);
--shadow-elevation-2: 0 3px 5px -1px rgba(0, 0, 0, 0.2),
0 6px 10px 0 rgba(0, 0, 0, 0.14), 0 1px 18px 0 rgba(0, 0, 0, 0.12);
--button-color: #2979ff;
--button-color-hover: #3580fd;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
}
body {
background: #e0e0e0;
margin: 0;
font-family: "Google Sans", sans-serif;
display: flex;
flex-direction: column;
color: #4a4a4a;
min-height: 100vh;
}
header {
background-color: #fff;
height: 76px;
display: flex;
align-items: center;
justify-content: center;
font-size: 24px;
box-shadow: 0 2px 4px -1px rgba(0, 0, 0, 0.2),
0 4px 5px 0 rgba(0, 0, 0, 0.14), 0 1px 10px 0 rgba(0, 0, 0, 0.12);
z-index: 1;
}
.main-container {
display: flex;
flex: 1;
}
.input-panel {
padding: 24px;
width: 40%;
max-width: 420px;
background-color: #f5f5f5;
box-shadow: 0 1px 5px 0 rgba(0, 0, 0, 0.2),
0 2px 2px 0 rgba(0, 0, 0, 0.14), 0 3px 1px -2px rgba(0, 0, 0, 0.12);
}
.input {
margin-bottom: 36px;
display: flex;
flex-direction: column;
align-items: flex-start;
}
.input:last-child {
margin-bottom: 0;
}
.input label {
font-size: 13px;
margin-bottom: 8px;
font-weight: 500;
}
.button {
color: #fff;
font-size: 15px;
border-radius: 4px;
padding: 10px 12px;
box-shadow: var(--shadow-elevation-1);
background-color: var(--button-color);
cursor: pointer;
border: none;
transition: box-shadow 100ms ease, background-color 100ms ease;
}
.button:hover {
box-shadow: var(--shadow-elevation-2);
background-color: var(--button-color-hover);
}
input.category-input {
font-size: 15px;
padding: 8px;
background: #fff;
border: 1px solid #cacaca;
border-radius: 4px;
width: 100%;
max-width: 360px;
}
input.category-input:focus {
outline: none;
border-color: #8e8e8e;
}
.select-container {
display: flex;
border-radius: 4px;
border: 1px solid #cacaca;
overflow: hidden;
}
.select-container .select {
background-color: #fff;
padding: 6px 12px;
font-size: 15px;
cursor: pointer;
transition: background-color 100ms ease;
}
.select-container .select:not(:last-child) {
border-right: 1px solid #cacaca;
}
.select-container .select[selected] {
color: #fff;
background-color: var(--button-color);
}
.preview-panel {
padding: 36px 0;
flex: 1;
display: flex;
align-items: center;
justify-content: center;
position: relative;
}
canvas {
width: 500px;
max-width: 80%;
}
.download-fab {
cursor: pointer;
position: absolute;
bottom: 24px;
right: 24px;
display: flex;
align-items: center;
justify-content: center;
border-radius: 50%;
width: 64px;
height: 64px;
background-color: #2979ff;
box-shadow: var(--shadow-elevation-1);
transition: background-color 100ms ease, box-shadow 100ms ease;
}
.download-fab:hover {
background-color: #3580fd;
box-shadow: var(--shadow-elevation-2);
}
@media screen and (max-width: 860px) {
header {
height: 56px;
font-size: 20px;
}
.main-container {
flex-direction: column;
}
.input-panel,
.preview-panel {
width: 100%;
max-width: initial;
}
.preview-panel {
padding: 24px 0 96px 0;
flex: 1;
}
.input {
margin-bottom: 24px;
}
.download-fab {
width: 56px;
height: 56px;
}
}
</style>
<header style="padding: 1rem">
<div class="title">OMG Badge Generator</div>
</header>
<div class="main-container">
<div class="input-panel">
<div class="input">
<label>Profile Picture</label>
<button class="button" onclick="uploadImage()">Upload Image</button>
<input
class="profile-input"
type="file"
accept="image/*"
onchange="upload(event)"
hidden
/>
</div>
<div class="input">
<label>Image Shape</label>
<div class="select-container">
<div
class="select"
id="original"
selected
onclick="changeShape('original')"
>
Original
</div>
<div class="select" id="square" onclick="changeShape('square')">
Square
</div>
<div class="select" id="circle" onclick="changeShape('circle')">
Circle
</div>
</div>
</div>
<div class="input">
<a href="https://dscomg.com">🎉 Developer Student Clubs OMG</a>
</div>
</div>
<div class="preview-panel">
<canvas></canvas>
<div class="download-fab" onclick="download()">
<svg
xmlns="http://www.w3.org/2000/svg"
height="24"
viewBox="0 0 24 24"
width="24"
fill="#fff"
>
<path d="M0 0h24v24H0V0z" fill="none" />
<path
d="M16.59 9H15V4c0-.55-.45-1-1-1h-4c-.55 0-1 .45-1 1v5H7.41c-.89 0-1.34 1.08-.71 1.71l4.59 4.59c.39.39 1.02.39 1.41 0l4.59-4.59c.63-.63.19-1.71-.7-1.71zM5 19c0 .55.45 1 1 1h12c.55 0 1-.45 1-1s-.45-1-1-1H6c-.55 0-1 .45-1 1z"
/>
</svg>
</div>
</div>
</div>
<script>
const canvas = document.querySelector("canvas");
const ctx = canvas.getContext("2d");
let image = "";
let shape = "original";
let append = "";
let who = "attendee";
var banner;
const uploadImage = () => {
document.querySelector("input.profile-input").click();
};
const changeShape = (type) => {
const original = document.querySelector(
".select-container .select#original"
);
const square = document.querySelector(".select-container .select#square");
const circle = document.querySelector(".select-container .select#circle");
shape = type;
switch (type) {
case "original": {
append = "";
original.setAttribute("selected", "");
square.removeAttribute("selected");
circle.removeAttribute("selected");
break;
}
case "square": {
append = "";
square.setAttribute("selected", "");
original.removeAttribute("selected");
circle.removeAttribute("selected");
break;
}
case "circle": {
append = "-circle";
circle.setAttribute("selected", "");
original.removeAttribute("selected");
square.removeAttribute("selected");
break;
}
}
draw(who);
};
const upload = (e) => {
if (e && e.target.files && e.target.files[0]) {
const reader = new FileReader();
reader.onload = (event) => {
const img = new Image();
img.onload = () => {
image = img;
draw(who);
};
img.src = event.target.result;
};
reader.readAsDataURL(e.target.files[0]);
}
};
const draw = (who) => {
banner = new Image();
banner.src = "./" + who + append + ".png";
banner.onload = () => {
if (image) {
switch (shape) {
case "original": {
canvas.width = image.width;
canvas.height = image.height;
ctx.drawImage(image, 0, 0);
break;
}
default: {
const size = Math.min(image.width, image.height);
canvas.width = 500;
canvas.height = 500;
const hRatio = canvas.width / image.width;
const vRatio = canvas.height / image.height;
const ratio = Math.max(hRatio, vRatio);
const x = (canvas.width - image.width * ratio) / 2;
const y = (canvas.height - image.height * ratio) / 2;
ctx.drawImage(
image,
0,
0,
image.width,
image.height,
x,
y,
image.width * ratio,
image.height * ratio
);
break;
}
}
} else {
ctx.canvas.width = 500;
ctx.canvas.height = 500;
ctx.fillStyle = "#0d47a1";
ctx.fillRect(0, 0, canvas.width, canvas.height);
}
const height = (banner.height / banner.width) * canvas.width;
const y = canvas.height - height;
const fontSize = canvas.width / 17.2;
const fontY = y + height * 0.7;
ctx.drawImage(
banner,
0,
0,
banner.width,
banner.height,
0,
y,
canvas.width,
height
);
ctx.fillStyle = "#757575";
ctx.textAlign = "center";
ctx.textBaseline = "middle";
ctx.font = `${fontSize}px Google Sans, sans-serif`;
// ctx.fillText(category, canvas.width / 2, fontY)
if (shape === "circle") {
ctx.globalCompositeOperation = "destination-in";
ctx.beginPath();
ctx.arc(
canvas.width / 2,
canvas.height / 2,
canvas.height / 2,
0,
Math.PI * 2
);
ctx.closePath();
ctx.fill();
}
};
};
const download = () => {
const a = document.createElement("a");
const url = canvas.toDataURL("image/png;base64");
a.download = "badge.png";
a.href = url;
a.click();
};
draw(who);
</script>
</html>