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122 lines
4.0 KiB
122 lines
4.0 KiB
#!/usr/bin/env python3
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import os
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import re
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import threading
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import time
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import pyray as rl
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from openpilot.system.hardware import HARDWARE, PC
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from openpilot.system.ui.lib.button import gui_button, ButtonStyle
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from openpilot.system.ui.lib.scroll_panel import GuiScrollPanel
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from openpilot.system.ui.lib.application import gui_app
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MARGIN = 50
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SPACING = 40
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FONT_SIZE = 72
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LINE_HEIGHT = 80
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BUTTON_SIZE = rl.Vector2(310, 160)
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DEMO_TEXT = """This is a sample text that will be wrapped and scrolled if necessary.
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The text is long enough to demonstrate scrolling and word wrapping.""" * 30
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def wrap_text(text, font_size, max_width):
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lines = []
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font = gui_app.font()
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for paragraph in text.split("\n"):
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if not paragraph.strip():
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# Don't add empty lines first, ensuring wrap_text("") returns []
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if lines:
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lines.append("")
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continue
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indent = re.match(r"^\s*", paragraph).group()
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current_line = indent
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words = re.split(r"(\s+)", paragraph[len(indent):])
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while len(words):
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word = words.pop(0)
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test_line = current_line + word + (words.pop(0) if words else "")
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if rl.measure_text_ex(font, test_line, font_size, 0).x <= max_width:
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current_line = test_line
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else:
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lines.append(current_line)
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current_line = word + " "
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current_line = current_line.rstrip()
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if current_line:
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lines.append(current_line)
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return lines
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class TextWindowRenderer:
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def __init__(self, text: str):
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self._textarea_rect = rl.Rectangle(MARGIN, MARGIN, gui_app.width - MARGIN * 2, gui_app.height - MARGIN * 2)
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self._wrapped_lines = wrap_text(text, FONT_SIZE, self._textarea_rect.width - 20)
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self._content_rect = rl.Rectangle(0, 0, self._textarea_rect.width - 20, len(self._wrapped_lines) * LINE_HEIGHT)
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self._scroll_panel = GuiScrollPanel(show_vertical_scroll_bar=True)
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self._scroll_panel._offset.y = -max(self._content_rect.height - self._textarea_rect.height, 0)
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def render(self):
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scroll = self._scroll_panel.handle_scroll(self._textarea_rect, self._content_rect)
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rl.begin_scissor_mode(int(self._textarea_rect.x), int(self._textarea_rect.y), int(self._textarea_rect.width), int(self._textarea_rect.height))
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for i, line in enumerate(self._wrapped_lines):
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position = rl.Vector2(self._textarea_rect.x + scroll.x, self._textarea_rect.y + scroll.y + i * LINE_HEIGHT)
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if position.y + LINE_HEIGHT < self._textarea_rect.y or position.y > self._textarea_rect.y + self._textarea_rect.height:
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continue
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rl.draw_text_ex(gui_app.font(), line, position, FONT_SIZE, 0, rl.WHITE)
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rl.end_scissor_mode()
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button_bounds = rl.Rectangle(gui_app.width - MARGIN - BUTTON_SIZE.x - SPACING, gui_app.height - MARGIN - BUTTON_SIZE.y, BUTTON_SIZE.x, BUTTON_SIZE.y)
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ret = gui_button(button_bounds, "Exit" if PC else "Reboot", button_style=ButtonStyle.TRANSPARENT)
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if ret:
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if PC:
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gui_app.request_close()
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else:
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HARDWARE.reboot()
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return ret
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class TextWindow:
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def __init__(self, text: str):
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self._text = text
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self._renderer: TextWindowRenderer | None = None
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self._stop_event = threading.Event()
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self._thread = threading.Thread(target=self._run)
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self._thread.start()
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# wait for the renderer to be initialized
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while self._renderer is None and self._thread.is_alive():
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time.sleep(0.01)
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def _run(self):
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if os.getenv("CI") is not None:
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return
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gui_app.init_window("Text")
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self._renderer = renderer = TextWindowRenderer(self._text)
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try:
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for _ in gui_app.render():
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if self._stop_event.is_set():
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break
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renderer.render()
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finally:
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gui_app.close()
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def __enter__(self):
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return self
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def close(self):
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if self._thread.is_alive():
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self._stop_event.set()
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self._thread.join(timeout=2.0)
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if self._thread.is_alive():
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print("WARNING: failed to join text window thread")
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def __del__(self):
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self.close()
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def __exit__(self, exc_type, exc_val, exc_tb):
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self.close()
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if __name__ == "__main__":
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with TextWindow(DEMO_TEXT):
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time.sleep(5)
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