Initial commit

4 months ago · ea0c1a1ff6
parent adbfafe702
commit ea0c1a1ff6
4 changed files with 104 additions and 4 deletions
--- a/.gitignore
+++ b/.gitignore
@ -1,3 +1,4 @@
 .direnv
 /result
-main
+main
+main.js
--- a/index.html
+++ b/index.html
@ -0,0 +1,17 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+    <link rel="stylesheet" href="style.css">
+</head>
+<body>
+    <main>
+        <button id="button-add-card">Add card</button>
+        <br>
+        <div id="canvas"></div>
+    </main>
+    <script src="main.js"></script>
+</body>
+</html>
--- a/main.nim
+++ b/main.nim
@ -1,3 +1,51 @@
-echo "Hello world!"
-var name: string = readLine(stdin)
-echo "Hi, ", name, "!"
+import std/dom
+import std/strutils
+import std/strformat
+let canvas = document.getElementById("canvas")
+canvas.addEventListener("mousedown", proc(e: Event) =
+    let e = cast[MouseEvent](e)
+
+    if e.button != 1:
+        return
+
+    canvas.style.cursor = "move"
+    canvas.onmousemove = proc(e: Event) =
+        let e = cast[MouseEvent](e)
+        canvas.scrollTop = e.clientY
+)
+canvas.addEventListener("mouseup", proc(e: Event) =
+    canvas.style.cursor = "auto"
+    canvas.onmousemove = nil
+)
+document.getElementById("button-add-card").onclick = proc(e: Event) =
+    var card = document.createElement("div")
+    card.className = "card"
+    card.innerText = "New card"
+    var x_offset, y_offset = 0.0
+    let drag = proc(e: Event) =
+        let e = cast[MouseEvent](e)
+
+        card.style.left = fmt"{cast[float](e.clientX) - x_offset}px"
+
+        card.style.top = fmt"{cast[float](e.clientY) - y_offset}px"
+
+        echo e.clientX
+    card.addEventListener("mousedown", proc(e: Event) =
+        let e = cast[MouseEvent](e)
+
+        if e.button != 0:
+            return
+
+        let left = if card.style.left != "": parseInt(($(card.style.left))[0..^3]) else: 0
+        x_offset = cast[float](e.clientX - left)
+
+        let top = if card.style.top != "": parseInt(($(card.style.top))[0..^3]) else: 0
+        y_offset = cast[float](e.clientY - top)
+
+        document.onmousemove = drag
+        document.onmouseup = proc(e: Event) = document.onmousemove = nil
+    )
+    canvas.appendChild(card)
+proc example(e: Event) =
+    echo "Document is ready"
+document.addEventListener("DOMContentLoaded", example)
--- a/style.css
+++ b/style.css
@ -0,0 +1,34 @@
+body {
+    font-family: sans-serif;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    height: 100vh;
+    margin: 0;
+    background: darkgrey;
+}
+
+#canvas {
+    background: gray;
+    width: 800px;
+    height: 600px;
+    border-radius: 4px;
+    overflow: hidden;
+    position: relative;
+}
+
+.card {
+    background: white;
+    position: absolute;
+    font-size: 1.25em;
+    width: 8em;
+    padding: 0.5em;
+    box-shadow: 0.25em 0.25em black;
+    cursor: pointer;
+    user-select: none;
+
+    &:active {
+        background: lightgrey;
+        z-index: 1;
+    }
+}