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 class TextBoxWidget(TextWidget):
  31     def __init__(self, *args, **kwargs):
  32         self.padding = kwargs.pop('padding', 5)
  33         self.border = kwargs.pop('border', 2)
  34         self.bg_colour = convert_colour(kwargs.pop('bg_colour',
  35                                                    (255, 255, 255, 192)))
  36         self.border_colour = convert_colour(kwargs.pop('border_colour',
  37                                                        (0, 0, 0)))
  38         self.box_width = kwargs.pop('box_width', 0)
  39
  40         super(TextBoxWidget,self).__init__(*args, **kwargs)
  41
  42     def prepare(self):
  43         self.font = resources.get_font(self.fontname, self.fontsize)
  44         self.lines = []
  45         height = 0
  46         width = 0
  47         for line in self.text.split('\n'):
  48             if self.box_width is not 0:
  49                 current_line = ''
  50                 current_line_rendered = None
  51                 for word in line.split(' '):
  52                     if len(current_line) > 0:
  53                         current_line += ' '+ word
  54                     else:
  55                         current_line = word
  56                     line = self.font.render(current_line, True, self.colour)
  57                     if line.get_rect().width <= self.box_width:
  58                         current_line_rendered = line
  59                         width = max(width, line.get_rect().width)
  60                         height += line.get_rect().height
  61                     elif current_line_rendered is not None:
  62                         line_rect = current_line_rendered.get_rect()
  63                         self.lines.append(pygame.transform.scale(
  64                             current_line_rendered,(line_rect.width * 2,
  65                                                    line_rect.height * 2)))
  66                         current_line = word
  67                         current_line_rendered = self.font.render(word, True, self.colour)
  68                     else:
  69                         raise Exception('Line too long. Please resize or rephrase')
  70                 if current_line_rendered is not None:
  71                     line_rect = current_line_rendered.get_rect()
  72                     self.lines.append(pygame.transform.scale(
  73                         current_line_rendered,(line_rect.width * 2,
  74                                                line_rect.height * 2)))
  75             else:
  76                 line = self.font.render(line, True, self.colour)
  77                 line_rect = line.get_rect()
  78                 width = max(width, line.get_rect().width)
  79                 height += line.get_rect().height
  80                 self.lines.append(pygame.transform.scale(line, (line_rect.width * 2,
  81                                                              line_rect.height * 2)))
  82
  83         width += 2 + self.padding
  84         height += 2 + self.padding
  85         self.surface = pygame.surface.Surface((width, height),
  86                                               pygame.locals.SRCALPHA)
  87
  88     def draw(self, surface):
  89         self.surface.fill(self.bg_colour)
  90         y = 0
  91         for line in self.lines:
  92             surface.blit(line, (self.padding, y + self.padding))
  93             y += line.get_rect().height
  94         self.text_rect = surface.get_rect()
  95         if not self.size:
  96             self.rect.size = self.text_rect.size
  97