86 lines
2.1 KiB
Python
Executable File
86 lines
2.1 KiB
Python
Executable File
#!/usr/bin/python
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import os
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import curses
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from core import colors, cursor
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from modes import normal
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def start_screen(stdscr):
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# Get window height and width
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height, width = stdscr.getmaxyx()
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# Startup text
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title = "λ Lambda"
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subtext = [
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"A performant, efficient and hackable text editor",
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"",
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"Type :h to open the README.md document",
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"Type :o <file> to open a file and edit",
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"Type :q or <C-c> to quit lambda"
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]
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# Centering calculations
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start_x_title = int((width // 2) - (len(title) // 2) - len(title) % 2)
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start_y = int((height // 2) - 2)
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# Rendering title
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stdscr.addstr(start_y, start_x_title, title, curses.color_pair(7) | curses.A_BOLD)
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# Print the subtext
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for text in subtext:
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start_y += 1
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start_x = int((width // 2) - (len(text) // 2) - len(text) % 2)
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stdscr.addstr(start_y, start_x, text)
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def start(stdscr):
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# Initialise data before starting
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data = {"cursor_y": 0, "cursor_x": 0, "commands": []}
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# Clear and refresh the screen for a blank canvas
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stdscr.clear()
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stdscr.refresh()
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# Initialise colors
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colors.init_colors()
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# Load the start screen
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start_screen(stdscr)
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# Change the cursor shape
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cursor.cursor_mode("block")
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# Main loop
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while True:
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# Get the height and width of the screen
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height, width = stdscr.getmaxyx()
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# Activate normal mode
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data = normal.activate(stdscr, height, width, data)
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# Calculate a valid cursor position from data
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cursor_x = max(2, data["cursor_x"])
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cursor_x = min(width - 1, cursor_x)
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cursor_y = max(0, data["cursor_y"])
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cursor_y = min(height - 3, cursor_y)
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# Move the cursor
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stdscr.move(cursor_y, cursor_x)
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# Refresh and clear the screen
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stdscr.refresh()
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stdscr.clear()
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def main():
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# Change the escape delay to 25ms
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# Fixes an issue where esc takes too long to press
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os.environ.setdefault("ESCDELAY", "25")
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# Initialise the screen
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curses.wrapper(start)
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if __name__ == "__main__":
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main()
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