trezor-core/src/trezor/ui/text.py

from micropython import const
from trezor import ui

TEXT_HEADER_HEIGHT = const(48)
TEXT_LINE_HEIGHT = const(26)
TEXT_MARGIN_LEFT = const(14)


class Text(ui.Widget):

    def __init__(self, header_text, header_icon, *content, icon_color=ui.ORANGE_ICON, max_lines=None):
        self.header_text = header_text
        self.header_icon = header_icon
        self.icon_color = icon_color
        self.content = content
        self.max_lines = max_lines

    def render(self):
        offset_x = TEXT_MARGIN_LEFT
        offset_y = TEXT_LINE_HEIGHT + TEXT_HEADER_HEIGHT
        style = ui.NORMAL
        fg = ui.FG
        bg = ui.BG
        ui.header(self.header_text, self.header_icon, ui.TITLE_GREY, ui.BG, self.icon_color)

        line = 1
        for item in self.content:
            if isinstance(item, str):
                if self.max_lines is not None and line >= self.max_lines:
                    ui.display.text(offset_x, offset_y, item + '...', style, fg, bg)
                    break
                else:
                    ui.display.text(offset_x, offset_y, item, style, fg, bg)
                offset_y += TEXT_LINE_HEIGHT
                line += 1
            elif item == ui.MONO or item == ui.NORMAL or item == ui.BOLD:
                style = item
            else:
                fg = item