Initial commit of 001code-html Scratch frontend project.

Includes scratch-gui, scratch-vm, scratch-blocks, scratch-render, scratch-l10n, and deployment config.

Co-authored-by: Cursor <cursoragent@cursor.com>

scratch-vm/test/unit/io_mouse_tw.js

@@ -0,0 +1,148 @@
+const test = require('tap').test;
+const Mouse = require('../../src/io/mouse');
+const Runtime = require('../../src/engine/runtime');
+
+test('position clamping', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    const BIG = 9999;
+    m.postData({
+        x: BIG,
+        y: BIG,
+        canvasWidth: 480,
+        canvasHeight: 360
+    });
+    t.strictEquals(m.getClientX(), BIG);
+    t.strictEquals(m.getClientY(), BIG);
+    t.strictEquals(m.getScratchX(), 240);
+    t.strictEquals(m.getScratchY(), -180);
+    t.end();
+});
+
+test('mouseButtonDown', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    t.strictEquals(m.getButtonIsDown(0), false);
+    t.strictEquals(m.getButtonIsDown(1), false);
+    t.strictEquals(m.getButtonIsDown(2), false);
+    m.postData({
+        isDown: true,
+        button: 0
+    });
+    t.strictEquals(m.getButtonIsDown(0), true);
+    t.strictEquals(m.getButtonIsDown(1), false);
+    t.strictEquals(m.getButtonIsDown(2), false);
+    m.postData({
+        isDown: true,
+        button: 2
+    });
+    t.strictEquals(m.getButtonIsDown(0), true);
+    t.strictEquals(m.getButtonIsDown(1), false);
+    t.strictEquals(m.getButtonIsDown(2), true);
+    m.postData({
+        isDown: false,
+        button: 2
+    });
+    t.strictEquals(m.getButtonIsDown(0), true);
+    t.strictEquals(m.getButtonIsDown(1), false);
+    t.strictEquals(m.getButtonIsDown(2), false);
+    t.end();
+});
+
+test('mouseDown with buttons', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    t.strictEquals(m.getIsDown(), false);
+    m.postData({
+        isDown: true,
+        button: 0
+    });
+    t.strictEquals(m.getIsDown(), true);
+    m.postData({
+        isDown: true,
+        button: 2
+    });
+    t.strictEquals(m.getIsDown(), true);
+    m.postData({
+        isDown: false,
+        button: 2
+    });
+    t.strictEquals(m.getIsDown(), false);
+    t.end();
+});
+
+test('missing button is treated as left', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    t.strictEquals(m.getButtonIsDown(0), false);
+    m.postData({
+        isDown: true
+    });
+    t.strictEquals(m.getButtonIsDown(0), true);
+    m.postData({
+        isDown: false
+    });
+    t.strictEquals(m.getButtonIsDown(0), false);
+    t.end();
+});
+
+test('usesRightClickDown', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    t.strictEquals(m.usesRightClickDown, false);
+    t.strictEquals(m.getButtonIsDown(2), false);
+    t.strictEquals(m.usesRightClickDown, true);
+    t.end();
+});
+
+test('no rounding when misc limits disabled', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    m.postData({
+        x: 241,
+        y: 541,
+        canvasWidth: 960,
+        canvasHeight: 720
+    });
+    t.equal(m.getScratchX(), -119);
+    t.equal(m.getScratchY(), -90);
+
+    rt.setRuntimeOptions({
+        miscLimits: false
+    });
+    t.equal(m.getScratchX(), -119.5);
+    t.equal(m.getScratchY(), -90.5);
+
+    t.end();
+});
+
+test('accepts 0 as x and y position', t => {
+    const rt = new Runtime();
+    const m = new Mouse(rt);
+
+    m.postData({
+        x: 1,
+        y: 2,
+        canvasWidth: 480,
+        canvasHeight: 360
+    });
+    t.equal(m.getClientX(), 1);
+    t.equal(m.getClientY(), 2);
+
+    m.postData({
+        x: 0,
+        y: 0,
+        canvasWidth: 480,
+        canvasHeight: 360
+    });
+    t.equal(m.getClientX(), 0);
+    t.equal(m.getClientY(), 0);
+
+    t.end();
+});