Add demo script for QRCodeWidget in nano-gui

gui/demos/qrcode.py

@@ -0,0 +1,47 @@
+# qrcode_test.py Test/demo of QRCodeWidget for nano-gui
+
+# Inicialize o hardware e o framebuf antes de importar módulos.
+from color_setup import ssd  # Configuração do display
+from gui.core.nanogui import refresh
+from gui.core.writer import CWriter
+from gui.core.colors import *
+import gui.fonts.arial10 as arial10  # Substitua pela fonte disponível
+from gui.core.widgets import QRCodeWidget
+import asyncio
+
+# Argumentos comuns
+qrcode_args = {
+    "version": 6,
+    "scale": 3,
+    "fgcolor": BLUE,
+    "bdcolor": RED,
+    "bgcolor": WHITE,  # Garantir fundo branco
+}
+
+async def demo_qr(wri):
+    # Inicializa o widget QRCode
+    qr = QRCodeWidget(wri, 10, 10, **qrcode_args)  # Row=10, Col=10
+    qr.value("https://example.com")  # Texto ou URL para o QR Code
+    qr.show()
+    refresh(ssd)  # Atualiza o display
+
+    await asyncio.sleep(3)  # Exibe o QR Code por 3 segundos
+
+    # Testa outro QR Code
+    qr.value("Hello, NanoGUI!")
+    qr.show()
+    refresh(ssd)  # Atualiza o display novamente
+    await asyncio.sleep(3)
+
+async def main(wri):
+    await demo_qr(wri)
+
+def test():
+    refresh(ssd, True)  # Inicializa e limpa o display
+    CWriter.set_textpos(ssd, 0, 0)  # Garante posição inicial
+    wri = CWriter(ssd, arial10, WHITE, BLACK, verbose=False)
+    wri.set_clip(True, True, False)
+    asyncio.run(main(wri))
+
+test()
+