#
# Albow - Text Screen
#
from pygame import Rect
from pygame.locals import *
from screen import Screen
from theme import FontProperty
from resource import get_text
from vectors import add, maximum
from controls import Button
#------------------------------------------------------------------------------
[docs]class Page(object):
def __init__(self, text_screen, heading, lines):
self.text_screen = text_screen
self.heading = heading
self.lines = lines
# width, height = text_screen.heading_font.size(heading)
width, height = text_screen.heading_font.size(heading), text_screen.heading_font.get_linesize()
for line in lines:
# w, h = text_screen.font.size(line)
w, h = text_screen.font.size(line)[0], text_screen.font.get_linesize()
width = max(width, w)
height += h
self.size = (width, height)
[docs] def draw(self, surface, color, pos):
heading_font = self.text_screen.heading_font
text_font = self.text_screen.font
x, y = pos
buf = heading_font.render(self.heading, True, color)
surface.blit(buf, (x, y))
# y += buf.get_rect().height
y += heading_font.get_linesize()
for line in self.lines:
buf = text_font.render(line, True, color)
surface.blit(buf, (x, y))
# y += buf.get_rect().height
y += text_font.get_linesize()
#------------------------------------------------------------------------------
[docs]class TextScreen(Screen):
# bg_color = (0, 0, 0)
# fg_color = (255, 255, 255)
# border = 20
heading_font = FontProperty('heading_font')
button_font = FontProperty('button_font')
def __init__(self, shell, filename, **kwds):
text = get_text(filename)
text_pages = text.split("\nPAGE\n")
pages = []
page_size = (0, 0)
for text_page in text_pages:
lines = text_page.strip().split("\n")
page = Page(self, lines[0], lines[1:])
pages.append(page)
page_size = maximum(page_size, page.size)
self.pages = pages
bf = self.button_font
b1 = Button("Prev Page", font=bf, action=self.prev_page)
b2 = Button("Menu", font=bf, action=self.go_back)
b3 = Button("Next Page", font=bf, action=self.next_page)
b = self.margin
page_rect = Rect((b, b), page_size)
gap = (0, 18)
b1.topleft = add(page_rect.bottomleft, gap)
b2.midtop = add(page_rect.midbottom, gap)
b3.topright = add(page_rect.bottomright, gap)
Screen.__init__(self, shell, **kwds)
self.size = add(b3.bottomright, (b, b))
self.add(b1)
self.add(b2)
self.add(b3)
self.prev_button = b1
self.next_button = b3
self.set_current_page(0)
[docs] def draw(self, surface):
b = self.margin
self.pages[self.current_page].draw(surface, self.fg_color, (b, b))
[docs] def at_first_page(self):
return self.current_page == 0
[docs] def at_last_page(self):
return self.current_page == len(self.pages) - 1
[docs] def set_current_page(self, n):
self.current_page = n
self.prev_button.enabled = not self.at_first_page()
self.next_button.enabled = not self.at_last_page()
[docs] def prev_page(self):
if not self.at_first_page():
self.set_current_page(self.current_page - 1)
[docs] def next_page(self):
if not self.at_last_page():
self.set_current_page(self.current_page + 1)
[docs] def go_back(self):
self.parent.show_menu()
