labels init
commit
5d6490eac3
@ -0,0 +1,16 @@
|
||||
<!DOCTYPE html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="UTF-8" />
|
||||
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
|
||||
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
|
||||
<script src="script.js" defer></script>
|
||||
<link rel="stylesheet" href="style.css" />
|
||||
<title>Concrete Label</title>
|
||||
</head>
|
||||
<body>
|
||||
<div id="container">
|
||||
<div id="editor"></div>
|
||||
</div>
|
||||
</body>
|
||||
</html>
|
||||
@ -0,0 +1,131 @@
|
||||
// Get the container to use as a canvas
|
||||
const container = document.getElementById("container");
|
||||
const editor = document.getElementById("editor");
|
||||
|
||||
// List of labels
|
||||
let labels = [];
|
||||
let closing = false;
|
||||
|
||||
// Start is where the mouse is pressed, End is where the mouse is released
|
||||
let startX;
|
||||
let startY;
|
||||
let endX;
|
||||
let endY;
|
||||
|
||||
// Minimum size for the label to be created
|
||||
let minimumSizeX = 25;
|
||||
let minimumSizeY = 25;
|
||||
|
||||
// Boolean for showing the editor during drawing
|
||||
let showEditor = false;
|
||||
|
||||
// Store the coordinates and trigger the function
|
||||
container.addEventListener("mousedown", (e) => {
|
||||
if (e.target.tagName !== "BUTTON") {
|
||||
startX = e.x;
|
||||
startY = e.y;
|
||||
|
||||
// activate the editor
|
||||
showEditor = true;
|
||||
editor.classList.add("show-editor");
|
||||
}
|
||||
});
|
||||
|
||||
container.addEventListener("mouseup", (e) => {
|
||||
if (e.target.tagName !== "BUTTON") {
|
||||
endX = e.x;
|
||||
endY = e.y;
|
||||
|
||||
// disable the editor
|
||||
showEditor = false;
|
||||
editor.classList.remove("show-editor");
|
||||
editor.style.width = 0;
|
||||
editor.style.height = 0;
|
||||
|
||||
// draw label
|
||||
drawLabel();
|
||||
}
|
||||
});
|
||||
|
||||
// Edit the editor box using transform instead of left / top in order to be more efficient
|
||||
// (but still with width and height ehm idk if this affects the performance a lot)
|
||||
// (and it is something we must care of because this event is called like every frame that the mouse is dragged)
|
||||
container.addEventListener("mousemove", (e) => {
|
||||
if (showEditor) {
|
||||
let minX = Math.min(startX, e.x);
|
||||
let minY = Math.min(startY, e.y);
|
||||
|
||||
let maxX = Math.max(startX, e.x);
|
||||
let maxY = Math.max(startY, e.y);
|
||||
|
||||
let width = maxX - minX;
|
||||
let height = maxY - minY;
|
||||
|
||||
// Apply a different class when the sizes pass the minimum size
|
||||
// (i don't know if is good made like this)
|
||||
if (width > minimumSizeX && height > minimumSizeY) {
|
||||
editor.classList.add("can-draw");
|
||||
} else {
|
||||
editor.classList.remove("can-draw");
|
||||
}
|
||||
|
||||
editor.style.transform = `translate(${minX}px, ${minY}px)`;
|
||||
editor.style.width = `${maxX - minX}px`;
|
||||
editor.style.height = `${maxY - minY}px`;
|
||||
}
|
||||
});
|
||||
|
||||
// Check the mouse direction and create the Label
|
||||
// The origin points of the label (because is positioned with top left) are always the lowest x and y values
|
||||
// The width and height are the greater x and y values (because width and height cannot be negative)
|
||||
function drawLabel() {
|
||||
let minX = Math.min(startX, endX);
|
||||
let minY = Math.min(startY, endY);
|
||||
|
||||
let maxX = Math.max(startX, endX);
|
||||
let maxY = Math.max(startY, endY);
|
||||
|
||||
let width = maxX - minX;
|
||||
let height = maxY - minY;
|
||||
|
||||
if (width > minimumSizeX && height > minimumSizeY) {
|
||||
// Create a label and push it into the array of labels
|
||||
// The index is +1 because it is
|
||||
let label = createLabel(minX, minY, width, height, labels.length);
|
||||
labels.push(label);
|
||||
container.appendChild(label);
|
||||
}
|
||||
}
|
||||
|
||||
// Create the label element
|
||||
function createLabel(x, y, width, height, index) {
|
||||
let label = document.createElement("div");
|
||||
label.classList.add("label");
|
||||
label.style.left = `${x}px`;
|
||||
label.style.top = `${y}px`;
|
||||
label.style.width = `${width}px`;
|
||||
label.style.height = `${height}px`;
|
||||
|
||||
// data attribute index maybe we will need it later maybe not
|
||||
// with the index number of the label
|
||||
label.setAttribute("data-index", index);
|
||||
|
||||
// Insert the number in the label
|
||||
let labelNumber = document.createElement("p");
|
||||
labelNumber.classList.add("label--number");
|
||||
labelNumber.innerHTML = index + 1;
|
||||
label.appendChild(labelNumber);
|
||||
|
||||
// Add a button for deleting the label
|
||||
// TODO: reactive numbering oh no
|
||||
let close = document.createElement("button");
|
||||
close.classList.add("label--close");
|
||||
close.innerHTML = "x";
|
||||
close.addEventListener("click", (e) => {
|
||||
label.remove();
|
||||
});
|
||||
|
||||
label.appendChild(close);
|
||||
|
||||
return label;
|
||||
}
|
||||
@ -0,0 +1,61 @@
|
||||
html,
|
||||
body {
|
||||
margin: 0;
|
||||
font-family: Arial, Helvetica, sans-serif;
|
||||
}
|
||||
|
||||
#container {
|
||||
width: 100%;
|
||||
height: 100vh;
|
||||
background-color: #fcc;
|
||||
}
|
||||
|
||||
#editor {
|
||||
position: absolute;
|
||||
display: none;
|
||||
border: 1px solid white;
|
||||
opacity: 0.5;
|
||||
width: 0;
|
||||
height: 0;
|
||||
z-index: 100;
|
||||
}
|
||||
|
||||
#editor.can-draw {
|
||||
opacity: 1;
|
||||
}
|
||||
|
||||
#editor.show-editor {
|
||||
display: block;
|
||||
}
|
||||
|
||||
.label {
|
||||
position: absolute;
|
||||
background-color: tomato;
|
||||
box-shadow: 0px 0px 8px 0px rgba(0, 0, 0, 0.2);
|
||||
}
|
||||
|
||||
.label--number {
|
||||
display: inline-block;
|
||||
margin: 0;
|
||||
padding: 0 4px;
|
||||
|
||||
user-select: none;
|
||||
|
||||
background-color: white;
|
||||
}
|
||||
|
||||
.label--close {
|
||||
position: absolute;
|
||||
right: 0;
|
||||
|
||||
border: none;
|
||||
|
||||
padding: 0 4px;
|
||||
|
||||
font-size: 1rem;
|
||||
|
||||
background: none;
|
||||
color: white;
|
||||
|
||||
cursor: pointer;
|
||||
}
|
||||
Loading…
Reference in New Issue