Refactor text boxes.

[naja.git] / naja / widgets / text.py

diff --git a/naja/widgets/text.py b/naja/widgets/text.py
index 12df393f1ff855c8a83aa8cd520c181f5ed19984..6ca239d6fbdc08d9e467a718fcf86d955d4cf252 100644 (file)
--- a/naja/widgets/text.py
+++ b/naja/widgets/text.py
@@ -3,6 +3,7 @@ import pygame
 from naja.constants import FONT, FONT_SIZE
 from naja.widgets.base import Widget
 from naja.resources import resources
+from naja.utils import convert_colour
 
 
 class TextWidget(Widget):
@@ -12,16 +13,84 @@ class TextWidget(Widget):
 
         self.text = text
         self.fontname = fontname or FONT
-        self.fontsize = (fontsize or FONT_SIZE) / 2
-        self.colour = colour or (0, 0, 0)
+        self.fontsize = (fontsize or FONT_SIZE) // 4
+        self.colour = convert_colour(colour or (0, 0, 0))
 
     def prepare(self):
         self.font = resources.get_font(self.fontname, self.fontsize)
         text = self.font.render(self.text, True, self.colour)
         text_rect = text.get_rect()
-        self.surface = pygame.transform.scale(text, (text_rect.width * 2,
-                                                     text_rect.height * 2))
+        self.surface = pygame.transform.scale(text, (text_rect.width * 4,
+                                                     text_rect.height * 4))
         self.size = self.surface.get_rect().size
 
+    def draw(self, surface):
+        surface.blit(self.surface, self.pos)
+
+
+class TextBoxWidget(TextWidget):
+    def __init__(self, *args, **kwargs):
+        self.padding = kwargs.pop('padding', 5)
+        self.border = kwargs.pop('border', 2)
+        self.bg_colour = convert_colour(kwargs.pop('bg_colour',
+                                                   (255, 255, 255, 192)))
+        self.border_colour = convert_colour(kwargs.pop('border_colour',
+                                                       (0, 0, 0)))
+        self.box_width = kwargs.pop('box_width', 0)
+
+        super(TextBoxWidget, self).__init__(*args, **kwargs)
+
+    def lines(self):
+        if self.box_width != 0:
+            return self._wrapped_lines()
+        else:
+            return self.text.splitlines()
+
+    def _wrapped_lines(self):
+        def words_fit(words):
+            words_line = ' '.join(words)
+            width = self.font.size(words_line)[0]
+            if width < self.box_width:
+                return True
+            elif len(words) == 1:
+                Exception("Word %r too long for box." % (words[0],))
+            return False
+
+        for line in self.text.splitlines():
+            current_words = []
+            for word in line.split():
+                current_words.append(word)
+                if words_fit(current_words):
+                    continue
+                else:
+                    yield ' '.join(current_words[:-1])
+                    current_words = current_words[-1:]
+            if current_words and words_fit(current_words):
+                yield ' '.join(current_words)
+
+    def prepare(self):
+        self.font = resources.get_font(self.fontname, self.fontsize)
+        rendered_lines = []
+        width, height = self.padding, self.padding
+        for line in self.lines():
+            line_surface = self.font.render(line, True, self.colour)
+            line_rect = line_surface.get_rect()
+            line_surface = pygame.transform.scale(
+                line_surface, (line_rect.width * 2, line_rect.height * 2))
+            line_rect = line_surface.get_rect()
+            rendered_lines.append(line_surface)
+            width = max(width, line_rect.width)
+            height += line_rect.height
+
+        self.surface = pygame.surface.Surface((width, height),
+                                              pygame.locals.SRCALPHA)
+        self.surface.fill(self.bg_colour)
+        self.size = self.surface.get_rect().size
+
+        x, y = self.padding, self.padding
+        for line_surface in rendered_lines:
+            self.surface.blit(line_surface, (x, y))
+            y += line_surface.get_rect().height
+
     def draw(self, surface):
         surface.blit(self.surface, self.rect)