init

author: Determinant <[email protected]> 2024-08-14 11:31:28 -0700
committer: Determinant <[email protected]> 2024-08-14 11:31:28 -0700
commit: 21c23c6cf4b8fe12ffa32030e70c0f71f18feae7 (patch)
tree: dc40700d5dd22995abc274b5a5cec2a7ccf4c838 /index.mjs
1 files changed, 179 insertions, 0 deletions
diff --git a/index.mjs b/index.mjs
new file mode 100644
index 0000000..193b8cd
--- /dev/null
+++ b/index.mjs
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+import { registerFont } from 'canvas';
+
+registerFont('./ocr-a-ext.ttf', { family: 'ocr' });
+
+import { discover } from 'loupedeck'
+
+import { readFile } from 'fs/promises';
+import { parse } from 'yaml'
+
+const pages = parse(await readFile("./profile.yaml", "utf8"));
+
+// Detects and opens first connected device
+const device = await discover()
+
+const isObject = (obj) => {
+ return obj != null && obj.constructor.name === "Object"
+};
+
+const rectifyLabel = (label) => {
+ let text;
+ let font;
+ if (isObject(label)) {
+ text = label.text;
+ font = `${label.size}px ocr`;
+ } else {
+ text = label.toString();
+ font = "24px ocr";
+ }
+ return { text, font }
+}
+
+const drawKey = (key, label, down) => {
+ device.drawKey(key, (c) => {
+ const { text, font } = rectifyLabel(label);
+ const padding = 10;
+ const bg = down ? "white" : "black";
+ const fg = down ? "black" : "white";
+ const w = c.canvas.width;
+ const h = c.canvas.height;
+ c.fillStyle = bg;
+ c.fillRect(0, 0, w, h);
+ c.fillStyle = fg;
+ c.lineWidth = 2;
+ c.strokeStyle = fg;
+ c.strokeRect(padding, padding, w - padding * 2, h - padding * 2);
+ c.font = font;
+ const { width, actualBoundingBoxAscent, actualBoundingBoxDescent } = c.measureText(text);
+ const x_axis = (w - width) / 2;
+ const y_axis = h / 2 + (actualBoundingBoxAscent - actualBoundingBoxDescent) / 2;
+ c.fillText(text, x_axis, y_axis);
+ })
+};
+
+const drawSideKnobs = (side, labels, highlight) => {
+ device.drawScreen(side, (c) => {
+ if (!highlight) {
+ highlight = [false, false, false];
+ }
+ for (let i = 0; i < 3; i++) {
+ const hl = highlight[i];
+ const y_offset = i * c.canvas.height / 3;
+ const x_padding = 8;
+ const y_padding = 3;
+ const bg = hl ? "white" : "black";
+ const fg = hl ? "black" : "white";
+ const w = c.canvas.width;
+ const h = c.canvas.height / 3;
+ c.fillStyle = bg;
+ c.fillRect(0, y_offset, w, h);
+ c.fillStyle = fg;
+ c.lineWidth = 2;
+ c.strokeStyle = fg;
+ c.strokeRect(x_padding, y_padding + y_offset, w - x_padding * 2, h - y_padding * 2);
+ const { text, font } = rectifyLabel(labels[i]);
+ c.font = font;
+ const { width, actualBoundingBoxAscent, actualBoundingBoxDescent } = c.measureText(text);
+ const x_axis = (h - width) / 2;
+ const y_axis = w / 2 + (actualBoundingBoxAscent - actualBoundingBoxDescent) / 2;
+ c.rotate(90 * Math.PI / 180);
+ c.fillText(text, x_axis + y_offset, -(w - y_axis));
+ c.resetTransform();
+ }
+ })
+};
+
+const loadPage = (page) => {
+ const { left, right, keys } = page || {};
+ if (!left) {
+ return
+ }
+ drawSideKnobs('left', left);
+ drawSideKnobs('right', right);
+ for (let i = 0; i < 12; i++) {
+ drawKey(i, keys[i], false);
+ }
+};
+
+let currentPage;
+let pressed = new Set();
+let highlighted = new Set();
+
+// Observe connect events
+device.on('connect', () => {
+ console.info('Connection successful!')
+ currentPage = 1;
+ loadPage(pages[currentPage]);
+})
+
+// React to button presses
+device.on('down', ({ id }) => {
+ console.info(`switch to page: ${id}`)
+ if (id == 0) {
+ return
+ }
+ currentPage = id;
+ loadPage(pages[currentPage]);
+})
+
+// React to knob turns
+device.on('rotate', ({ id, delta }) => {
+ const { left, right, keys } = pages[currentPage] || {};
+ if (!left) {
+ return
+ }
+ let pos = {"T": 0, "C": 1, "B": 2}[id.substring(4, 5)];
+ let side = {"L": ['left', left], "R": ['right', right]}[id.substring(5, 6)];
+ let mask = [false, false, false];
+ mask[pos] = true;
+ drawSideKnobs(side[0], side[1], mask);
+ if (!highlighted.has(id)) {
+ highlighted.add(id);
+ setTimeout(() => {
+ drawSideKnobs(side[0], side[1], [false, false, false]);
+ highlighted.delete(id);
+ }, 200);
+ }
+})
+
+const clearStaleButton = (touches) => {
+ const s = new Set(touches.map(o => o.target.key).filter(k => k !== undefined));
+ for (const key of pressed.keys()) {
+ if (!s.has(key)) {
+ drawKey(key, pages[currentPage].keys[key], false);
+ pressed.delete(key);
+ }
+ }
+};
+
+device.on('touchstart', ({ changedTouches, touches }) => {
+ clearStaleButton(changedTouches);
+ const target = changedTouches[0].target;
+ if (target.key === undefined) {
+ return
+ }
+ pressed.add(target.key);
+ drawKey(target.key, pages[currentPage].keys[target.key], true);
+ //device.vibrate()
+})
+
+device.on('touchmove', ({ changedTouches, touches }) => {
+ clearStaleButton(changedTouches);
+})
+
+device.on('touchend', ({ changedTouches, touches }) => {
+ clearStaleButton(changedTouches);
+ const target = changedTouches[0].target;
+ if (target.key === undefined) {
+ return
+ }
+ pressed.delete(target.key);
+ drawKey(target.key, pages[currentPage].keys[target.key], false)
+})
+
+process.on('SIGINT', () => {
+ device.close().then(() => {
+ console.info("shutdown")
+ process.exit()
+ })
+})
author	Determinant <[email protected]>	2024-08-14 11:31:28 -0700
committer	Determinant <[email protected]>	2024-08-14 11:31:28 -0700
commit	21c23c6cf4b8fe12ffa32030e70c0f71f18feae7 (patch)
tree	dc40700d5dd22995abc274b5a5cec2a7ccf4c838 /index.mjs