207 lines
7.3 KiB
Python
207 lines
7.3 KiB
Python
# Copyright (C) 2020 by ÿnérant, eichhornchen, nicomarg, charlse
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# SPDX-License-Identifier: GPL-3.0-or-later
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import curses
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from typing import Any, Optional, Union
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from squirrelbattle.display.texturepack import TexturePack
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from squirrelbattle.tests.screen import FakePad
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class Display:
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x: int
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y: int
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width: int
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height: int
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pad: Any
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screen_lines: list = []
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def __init__(self, screen: Any, pack: Optional[TexturePack] = None):
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self.screen = screen
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self.pack = pack or TexturePack.get_pack("ascii")
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def newpad(self, height: int, width: int) -> Union[FakePad, Any]:
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return curses.newpad(height, width) if self.screen else FakePad()
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def truncate(self, msg: str, height: int, width: int) -> str:
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height = max(0, height)
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width = max(0, width)
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lines = msg.split("\n")
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lines = lines[:height]
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lines = [line[:width] for line in lines]
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return "\n".join(lines)
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def addstr(self, pad: Any, y: int, x: int, msg: str, *options) -> None:
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"""
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Display a message onto the pad.
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If the message is too large, it is truncated vertically and horizontally
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"""
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height, width = pad.getmaxyx()
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msg = self.truncate(msg, height - y, width - x - 1)
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if msg.replace("\n", "") and x >= 0 and y >= 0:
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return pad.addstr(y, x, msg, *options)
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def init_pair(self, number: int, foreground: int, background: int) -> None:
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return curses.init_pair(number, foreground, background) \
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if self.screen else None
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def color_pair(self, number: int) -> int:
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return curses.color_pair(number) if self.screen else 0
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def resize(self, y: int, x: int, height: int, width: int,
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resize_pad: bool = True) -> None:
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self.x = x
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self.y = y
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self.width = width
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self.height = height
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if hasattr(self, "pad") and resize_pad and \
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self.height >= 0 and self.width >= 0:
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self.pad.resize(self.height + 1, self.width + 1)
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def refresh(self, *args, resize_pad: bool = True) -> None:
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if len(args) == 4:
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self.resize(*args, resize_pad)
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self.display()
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def refresh_pad(self, pad: Any, top_y: int, top_x: int,
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window_y: int, window_x: int,
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last_y: int, last_x: int) -> None:
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"""
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Refresh a pad on a part of the window.
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The refresh starts at coordinates (top_y, top_x) from the pad,
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and is drawn from (window_y, window_x) to (last_y, last_x).
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If coordinates are invalid (negative indexes/length..., then nothing
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is drawn and no error is raised.
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"""
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top_y, top_x = max(0, top_y), max(0, top_x)
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window_y, window_x = max(0, window_y), max(0, window_x)
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screen_max_y, screen_max_x = self.screen.getmaxyx() if self.screen \
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else (42, 42)
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last_y, last_x = min(screen_max_y - 1, last_y), \
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min(screen_max_x - 1, last_x)
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if last_y >= window_y and last_x >= window_x:
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# Refresh the pad only if coordinates are valid
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pad.refresh(top_y, top_x, window_y, window_x, last_y, last_x)
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height, width = self.pad.getmaxyx()
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height = min(height, last_y - window_y + 1)
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width = min(width, last_x - window_x + 1)
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pad_str = "\n".join(pad.instr(y, top_x).decode("utf-8")[:-1]
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for y in range(top_y, top_y + height))
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pad_str = self.truncate(pad_str, height, width)
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Display.insert_message_in_screen(pad_str, window_y, window_x)
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def display(self) -> None:
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raise NotImplementedError
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@property
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def rows(self) -> int:
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return curses.LINES if self.screen else 42
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@property
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def cols(self) -> int:
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return curses.COLS if self.screen else 42
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@classmethod
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def resize_screen_lines(cls, height: int, width: int) -> None:
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cls.screen_lines = cls.screen_lines[:height]
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cls.screen_lines += [width * " "
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for _ in range(height - len(cls.screen_lines))]
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for i in range(len(cls.screen_lines)):
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cls.screen_lines[i] = cls.screen_lines[i][:width]
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@classmethod
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def insert_message_in_screen(cls, message: str, y: int, x: int) -> None:
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for i, line in enumerate(message.split("\n")):
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if i + y <= len(cls.screen_lines):
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line = line[:len(cls.screen_lines[i + y]) - x]
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width = len(line)
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tmp_width = 0
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true_line = ""
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for c in line:
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tmp_width += 1
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true_line += c
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if c in TexturePack.SQUIRREL_PACK and c != " " and c != "█":
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tmp_width += 1
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if tmp_width >= width:
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break
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line = true_line
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cls.screen_lines[i + y] = cls.screen_lines[i + y][:x] + line + \
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cls.screen_lines[i + y][x + len(line):]
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@classmethod
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def erase_screen_lines(cls) -> None:
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cls.screen_lines = [" " * len(cls.screen_lines[i])
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for i in range(len(cls.screen_lines))]
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@classmethod
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def print_screen(cls) -> str:
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return "\n".join(cls.screen_lines)
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class VerticalSplit(Display):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.pad = self.newpad(self.rows, 1)
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@property
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def width(self) -> int:
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return 1
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@width.setter
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def width(self, val: Any) -> None:
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pass
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def display(self) -> None:
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for i in range(self.height):
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self.addstr(self.pad, i, 0, "┃")
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self.refresh_pad(self.pad, 0, 0, self.y, self.x,
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self.y + self.height - 1, self.x)
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class HorizontalSplit(Display):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.pad = self.newpad(1, self.cols)
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@property
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def height(self) -> int:
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return 1
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@height.setter
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def height(self, val: Any) -> None:
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pass
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def display(self) -> None:
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for i in range(self.width):
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self.addstr(self.pad, 0, i, "━")
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self.refresh_pad(self.pad, 0, 0, self.y, self.x, self.y,
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self.x + self.width - 1)
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class Box(Display):
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def __init__(self, *args, fg_border_color: Optional[int] = None, **kwargs):
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super().__init__(*args, **kwargs)
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self.pad = self.newpad(self.rows, self.cols)
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self.fg_border_color = fg_border_color or curses.COLOR_WHITE
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pair_number = 4 + self.fg_border_color
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self.init_pair(pair_number, self.fg_border_color, curses.COLOR_BLACK)
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self.pair = self.color_pair(pair_number)
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def display(self) -> None:
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self.addstr(self.pad, 0, 0, "┏" + "━" * (self.width - 2) + "┓",
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self.pair)
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for i in range(1, self.height - 1):
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self.addstr(self.pad, i, 0, "┃", self.pair)
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self.addstr(self.pad, i, self.width - 1, "┃", self.pair)
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self.addstr(self.pad, self.height - 1, 0,
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"┗" + "━" * (self.width - 2) + "┛", self.pair)
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self.refresh_pad(self.pad, 0, 0, self.y, self.x,
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self.y + self.height - 1, self.x + self.width - 1)
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