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""" text.text - letters, texts and scaling and coloring of fonts """
import pygame
from sliceitoff.display import Scaling, CGA_COLORS
from .fonts import Fonts
from .explode import ExplodingSprite
scaled_fonts = {}
def get_letter_surface(font_key, ch):
""" Get letter surface at given properties hopefully from cache
args:
font_key: (font name, width to scale, color)
ch: 0-255 character on cp473
color: 0-15 as in CGA palette
"""
font, w, color = font_key
if font not in Fonts.fonts:
return None
if font_key not in scaled_fonts:
scaled_fonts[font_key]=[None for _ in range(256)]
if scaled_fonts[font_key][ch] is None:
scaled_fonts[font_key][ch] = pygame.transform.scale_by(
Fonts.fonts[font].get(ch),
w/8 * Scaling.factor)
scaled_fonts[font_key][ch].fill(
CGA_COLORS[color],
special_flags = pygame.BLEND_RGBA_MULT)
return scaled_fonts[font_key][ch]
class LetterSprite(ExplodingSprite):
""" Make sprite out of letter surface at given position """
def __init__(self, font_key, ch, pos):
super().__init__()
self.dead = True
self.image = get_letter_surface(font_key, ch)
self.rect = self.image.get_rect().move(pos)
class TextPage(pygame.sprite.Group):
""" Creates sprite group out of given text and parameters
args:
text Just text. \xe0 - \xef to cahnge color on cga palette
pos Position of right top corner in internal cooordinates
size Single character size (w,h)
grid Space for a character (w,h)
font Font loaded in Fonts.fonts dict
"""
# pylint: disable = too-many-arguments # all argumets necessaary
def __init__(
self,
text,
pos = (0,0),
size = (8_000,16_000),
grid = None,
font = 'lcd'):
super().__init__()
if grid is None:
grid = size
color = 0xf
col, row = 0, 0
for ch_txt in text:
if ch_txt == '\n':
row += 1
col = 0
continue
if ch_txt == '\t':
col = (col + 4) % 4
continue
ch = ord(ch_txt)
if ch in range(0xe0,0xf0):
color = ch - 0xe0
continue
font_key = (font, size[0], color)
sprite_pos = Scaling.scale_to_display(
(pos[0]+col*grid[0], pos[1]+row*grid[1]) )
self.add(LetterSprite(font_key, ch, sprite_pos))
col += 1
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