1 files changed, 74 insertions, 0 deletions
diff --git a/scripts/scroll.js b/scripts/scroll.js
new file mode 100644
index 0000000..b7a6fa0
--- /dev/null
+++ b/scripts/scroll.js
@@ -0,0 +1,74 @@
+document.addEventListener('scroll', function () {
+    progress();
+    hideSidebar();
+});
+
+function progress() {
+    const sections = document.getElementsByTagName("section");
+    const nodes = document.getElementsByTagName("nodes");
+
+    if (nodes[0]) {
+        for (var i = 0; i < sections.length; i++) {
+            if (isInViewport(sections[i])) {
+                nodes[i].style.width = "20px";
+                nodes[i].style.height = "20px";
+            }
+            else {
+                nodes[i].style.width = "10px";
+                nodes[i].style.height = "10px";
+            }
+        }
+    }
+}
+
+function hideSidebar() {
+    const sidebar = document.getElementById("sidebar");
+    const progressContainer = document.getElementById("progressContainer");
+    const sections = document.getElementsByTagName("section");
+
+    if (screen.width <= 600) {
+        if (window.scrollY >= 100) {
+            sidebar.style.left = "-80px";
+
+            for (var i = 0; i < sections.length; i++) {
+                sections[i].style.marginLeft = 0;
+            }
+
+            if (progressContainer) {
+                progressContainer.style.left = "-11px";
+            }
+        }
+        else {
+            sidebar.style.left = "0";
+
+            for (var i = 0; i < sections.length; i++) {
+                sections[i].style.marginLeft = "70px";
+            }
+
+            if (progressContainer) {
+                progressContainer.style.left = "61px";
+            }
+        }
+    }
+    else {
+        sidebar.style.left = "0";
+        progressContainer.style.left = "61px";
+    }
+}
+
+function isInViewport(element) {
+    const rect = element.getBoundingClientRect();
+    const visibleHeight = Math.min(rect.bottom, window.innerHeight) - Math.max(rect.top, 0);
+    const visibleWidth = Math.min(rect.right, window.innerWidth) - Math.max(rect.left, 0);
+    const elementHeight = rect.height;
+    const elementWidth = rect.width;
+    const halfElementHeight = elementHeight / 2;
+    const halfElementWidth = elementWidth / 2;
+
+    return (
+        visibleHeight >= halfElementHeight &&
+        visibleWidth >= halfElementWidth
+    );
+}
+
+