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83 lines
3.3 KiB
83 lines
3.3 KiB
#!/usr/bin/env python3
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import re
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import sys
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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.text_measure import measure_text_cached
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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, Widget
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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 measure_text_cached(font, test_line, font_size).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 TextWindow(Widget):
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def __init__(self, text: str):
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super().__init__()
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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, rect: rl.Rectangle):
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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(rect.width - MARGIN - BUTTON_SIZE.x - SPACING, rect.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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if __name__ == "__main__":
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text = sys.argv[1] if len(sys.argv) > 1 else DEMO_TEXT
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gui_app.init_window("Text Viewer")
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text_window = TextWindow(text)
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for _ in gui_app.render():
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text_window.render(rl.Rectangle(0, 0, gui_app.width, gui_app.height))
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