naja/widgets/text.py

   1 import pygame
   2
   3 from naja.constants import FONT, FONT_SIZE
   4 from naja.widgets.base import Widget
   5 from naja.resources import resources
   6 from naja.utils import convert_colour
   7
   8
   9 class TextWidget(Widget):
  10     def __init__(self, pos, text, size=None, fontname=None, fontsize=None,
  11                  colour=None):
  12         super(TextWidget, self).__init__(pos, size)
  13
  14         self.text = text
  15         self.fontname = fontname or FONT
  16         self.fontsize = (fontsize or FONT_SIZE) / 2
  17         self.colour = convert_colour(colour or (0, 0, 0))
  18
  19     def prepare(self):
  20         self.font = resources.get_font(self.fontname, self.fontsize)
  21         text = self.font.render(self.text, True, self.colour)
  22         text_rect = text.get_rect()
  23         self.surface = pygame.transform.scale(text, (text_rect.width * 2,
  24                                                      text_rect.height * 2))
  25         self.size = self.surface.get_rect().size
  26
  27     def draw(self, surface):
  28         surface.blit(self.surface, self.rect)
  29
  30
  31 class TextBoxWidget(TextWidget):
  32     def __init__(self, *args, **kwargs):
  33         self.padding = kwargs.pop('padding', 5)
  34         self.border = kwargs.pop('border', 2)
  35         self.bg_colour = convert_colour(kwargs.pop('bg_colour',
  36                                                    (255, 255, 255, 192)))
  37         self.border_colour = convert_colour(kwargs.pop('border_colour',
  38                                                        (0, 0, 0)))
  39         self.box_width = kwargs.pop('box_width', 0)
  40
  41         super(TextBoxWidget, self).__init__(*args, **kwargs)
  42
  43     def prepare(self):
  44         self.font = resources.get_font(self.fontname, self.fontsize)
  45         self.lines = []
  46         height = 0
  47         width = 0
  48         for line in self.text.split('\n'):
  49             if self.box_width is not 0:
  50                 current_line = ''
  51                 current_line_rendered = None
  52                 for word in line.split(' '):
  53                     if len(current_line) > 0:
  54                         current_line += ' ' + word
  55                     else:
  56                         current_line = word
  57                     line = self.font.render(current_line, True, self.colour)
  58                     if line.get_rect().width <= self.box_width:
  59                         current_line_rendered = line
  60                         width = max(width, line.get_rect().width)
  61                         height += line.get_rect().height
  62                     elif current_line_rendered is not None:
  63                         line_rect = current_line_rendered.get_rect()
  64                         self.lines.append(pygame.transform.scale(
  65                             current_line_rendered, (line_rect.width * 2,
  66                                                     line_rect.height * 2)))
  67                         current_line = word
  68                         current_line_rendered = self.font.render(
  69                             word, True, self.colour)
  70                     else:
  71                         raise Exception(
  72                             'Line too long. Please resize or rephrase')
  73                 if current_line_rendered is not None:
  74                     line_rect = current_line_rendered.get_rect()
  75                     self.lines.append(pygame.transform.scale(
  76                         current_line_rendered, (line_rect.width * 2,
  77                                                 line_rect.height * 2)))
  78             else:
  79                 line = self.font.render(line, True, self.colour)
  80                 line_rect = line.get_rect()
  81                 width = max(width, line.get_rect().width)
  82                 height += line.get_rect().height
  83                 self.lines.append(pygame.transform.scale(
  84                     line, (line_rect.width * 2, line_rect.height * 2)))
  85
  86         width += 2 + self.padding
  87         height += 2 + self.padding
  88         self.surface = pygame.surface.Surface((width, height),
  89                                               pygame.locals.SRCALPHA)
  90
  91     def draw(self, surface):
  92         self.surface.fill(self.bg_colour)
  93         y = 0
  94         for line in self.lines:
  95             surface.blit(line, (self.padding, y + self.padding))
  96             y += line.get_rect().height
  97         self.text_rect = surface.get_rect()
  98         if not self.size:
  99             self.rect.size = self.text_rect.size