Function parsePixelForgeHeaderToRgb565

app.js:862–901

(text)

}

function parsePixelForgeHeaderToRgb565(text) {
  if (!text || typeof text !== "string") {
    throw new Error("No export text received from PixelForge. Click Convert first.");
  }

  const widthMatch = text.match(/const\s+uint16_t\s+([A-Za-z0-9_]+)_width\s*=\s*(\d+)\s*;/);
  const heightMatch = text.match(/const\s+uint16_t\s+([A-Za-z0-9_]+)_height\s*=\s*(\d+)\s*;/);
  if (!widthMatch || !heightMatch) {
    throw new Error("Couldn't find width/height in PixelForge export.");
  }

  const baseName = widthMatch[1];
  const w = parseInt(widthMatch[2], 10);
  const h = parseInt(heightMatch[2], 10);
  if (!Number.isFinite(w) || !Number.isFinite(h) || w <= 0 || h <= 0) {
    throw new Error("Invalid width/height in PixelForge export.");
  }

  // Prefer the base symbol if present; otherwise take the first uint16_t PROGMEM array.
  const preferredRe = new RegExp(
    `const\\s+uint16_t\\s+(${baseName}(?:_\\d+)?)\\s*\\[\\]\\s*PROGMEM\\s*=\\s*\\{([\\s\\S]*?)\\};`
  );
  let arrayMatch = text.match(preferredRe);
  if (!arrayMatch) {
    arrayMatch = text.match(/const\s+uint16_t\s+([A-Za-z0-9_]+)\s*\[\]\s*PROGMEM\s*=\s*\{([\s\S]*?)\};/);
  }
  if (!arrayMatch) {
    throw new Error("Couldn't find a uint16_t RGB565 array in PixelForge export (TFT mode only).");
  }

  const symbol = arrayMatch[1];
  const body = arrayMatch[2];
  const hexes = body.match(/0x[0-9A-Fa-f]{1,4}/g) || [];
  if (!hexes.length) {
    throw new Error("No pixel data found in PixelForge export.");
  }
  const rgb565 = hexes.map((hx) => parseInt(hx, 16) & 0xffff);

  return { symbol, baseName, w, h, rgb565 };
}

function rgb565ToDataUrl(w, h, rgb565) {
  const canvas = document.createElement("canvas");