Velocity/lambda.py

105 lines
2.7 KiB
Python
Executable File

from core import colors, cursor, mode, files, buffer
import os
import curses
import argparse
def start_screen(stdscr):
# Get window height and width
height, width = stdscr.getmaxyx()
# Startup text
title = "λ Lambda"
subtext = [
"Next generation hackable text editor for nerds",
"",
"Type :h to open the README.md document",
"Type :o <file> to open a file and edit",
"Type :q or <C-c> to quit lambda.py"
]
# Centering calculations
start_x_title = int((width // 2) - (len(title) // 2) - len(title) % 2)
start_y = int((height // 2) - 2)
# Rendering title
stdscr.addstr(start_y, start_x_title, title, curses.color_pair(7) | curses.A_BOLD)
# Print the subtext
for text in subtext:
start_y += 1
start_x = int((width // 2) - (len(text) // 2) - len(text) % 2)
stdscr.addstr(start_y, start_x, text)
def start(stdscr, buffer_name, buffer_list):
# Initialise data before starting
data = {
"cursor_y": 0,
"cursor_x": 0,
"height": 0,
"width": 0,
"mode": "normal",
"icon": "λ",
"info_bar": [" "],
"buffer_name": buffer_name,
"buffer_list": buffer_list,
"statusbar_theme": "filled"
}
# Initialise colors
colors.init_colors()
# Change the cursor shape
cursor.cursor_mode("block")
# Start the screen
if data["buffer_name"] == "[No Name]":
start_screen(stdscr)
# Main loop
while True:
# Get the height and width of the screen
data["height"], data["width"] = stdscr.getmaxyx()
# Write the buffer to the screen
buffer.write_buffer(stdscr, data)
# Activate the next mode
data = mode.activate(stdscr, data)
# Refresh and clear the screen
stdscr.refresh()
stdscr.clear()
def main():
parser = argparse.ArgumentParser(description="Process some integers.")
parser.add_argument("file", metavar="file", type=str, nargs="?",
help="File to open")
args = parser.parse_args()
# Check if a file name has been inputted
if args.file:
buffer_name = args.file
buffer_list = files.open_file(buffer_name)
# Convert each line into a list of lists with each element of the sublist representing one character
for index, line in enumerate(buffer_list):
buffer_list[index] = list(line)
else:
buffer_name = "[No Name]"
buffer_list = [[""]]
# Change the escape delay to 25ms
# Fixes an issue where esc takes too long to press
os.environ.setdefault("ESCDELAY", "25")
# Initialise the screen
curses.wrapper(start, buffer_name, buffer_list)
if __name__ == "__main__":
main()