<div class="modal-trigger-area">
<button class="open-btn" onclick="openModal()">Open Draggable Window</button>
</div>
<div id="dragModal" class="modal-wrapper">
<div class="modal-window" id="windowBox">
<div class="modal-header" id="dragHandle">
<div class="title">
<span>New Project</span>
</div>
<button class="close-btn" onclick="closeModal()">×</button>
</div>
<div class="modal-body">
<h3>Drag me around!</h3>
<p>Grab the gray header bar to move this window. It stays exactly where you leave it.</p>
<div class="modal-footer">
<button class="action-btn" onclick="closeModal()">Close</button>
<button class="action-btn primary">Save Changes</button>
</div>
</div>
</div>
</div>
.modal-trigger-area {
font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
padding: 50px;
text-align: center;
}
.open-btn {
padding: 12px 24px;
background: #1f2937;
color: white;
border: none;
border-radius: 8px;
font-weight: 600;
cursor: pointer;
transition: transform 0.2s;
}
.open-btn:active {
transform: scale(0.96);
}
/* Modal Overlay */
.modal-wrapper {
font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: rgba(0, 0, 0, 0.4);
backdrop-filter: blur(4px);
z-index: 1000;
display: none;
opacity: 0;
transition: opacity 0.3s ease;
}
.modal-wrapper.show {
display: block;
opacity: 1;
}
/* Draggable Window */
.modal-window {
position: absolute;
top: 50%;
left: 50%;
/* Initial centering */
transform: translate(-50%, -50%);
width: 400px;
background: #ffffff;
border-radius: 12px;
box-shadow: 0 20px 50px rgba(0,0,0,0.15);
border: 1px solid #e5e7eb;
overflow: hidden;
}
.modal-header {
padding: 12px 16px;
background: #f3f4f6;
border-bottom: 1px solid #e5e7eb;
display: flex;
justify-content: space-between;
align-items: center;
cursor: grab;
user-select: none;
}
.modal-header:active {
cursor: grabbing;
background: #e5e7eb;
}
.title {
display: flex;
align-items: center;
gap: 8px;
font-weight: 600;
color: #374151;
}
.close-btn {
background: none;
border: none;
font-size: 1.5rem;
line-height: 1;
color: #9ca3af;
cursor: pointer;
padding: 0 4px;
}
.close-btn:hover {
color: #ef4444;
}
.modal-body {
padding: 24px;
}
.modal-body h3 {
margin: 0 0 10px 0;
color: #111827;
}
.modal-body p {
color: #6b7280;
line-height: 1.5;
margin-bottom: 24px;
}
.modal-footer {
display: flex;
justify-content: flex-end;
gap: 12px;
}
.action-btn {
padding: 8px 16px;
border-radius: 6px;
border: 1px solid #d1d5db;
background: white;
font-weight: 500;
cursor: pointer;
color: #374151;
}
.action-btn.primary {
background: #2563eb;
color: white;
border-color: #2563eb;
}
const wrapper = document.getElementById("dragModal");
const modal = document.getElementById("windowBox");
const header = document.getElementById("dragHandle");
let isDragging = false;
let startX, startY, initialLeft, initialTop;
function openModal() {
wrapper.classList.add("show");
// Reset position to center whenever opened
modal.style.top = "50%";
modal.style.left = "50%";
modal.style.transform = "translate(-50%, -50%)";
}
function closeModal() {
wrapper.classList.remove("show");
}
header.addEventListener("mousedown", (e) => {
isDragging = true;
// Get the current computed position
const rect = modal.getBoundingClientRect();
// Calculate the offset from the mouse to the top-left corner
startX = e.clientX - rect.left;
startY = e.clientY - rect.top;
// Important: Switch from CSS centering to absolute pixel positioning
// This prevents the "jump" when removing the transform
modal.style.transform = "none";
modal.style.left = rect.left + "px";
modal.style.top = rect.top + "px";
});
document.addEventListener("mousemove", (e) => {
if (!isDragging) return;
e.preventDefault();
// Calculate new position
const x = e.clientX - startX;
const y = e.clientY - startY;
modal.style.left = `${x}px`;
modal.style.top = `${y}px`;
});
document.addEventListener("mouseup", () => {
isDragging = false;
});
