Gray out the glyphs as well

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

diff --git a/naja/widgets/text.py b/naja/widgets/text.py
index 12df393f1ff855c8a83aa8cd520c181f5ed19984..fb0c31fd507e3ba3843c7b464c7f052c4b4e566d 100644 (file)
--- a/naja/widgets/text.py
+++ b/naja/widgets/text.py
@@ -1,27 +1,129 @@
 import pygame
 
-from naja.constants import FONT, FONT_SIZE
-from naja.widgets.base import Widget
+from naja.constants import FONT, FONT_SIZE, EIGHT_BIT_SCALE
 from naja.resources import resources
+from naja.resources.mutators import EIGHT_BIT, blender
+from naja.utils import convert_colour
+from naja.widgets.base import Widget
+
+
+MARKUP_MAP = {
+    'NORTH': (1, 'glyphs/arrow_up.png'),
+    'SOUTH': (1, 'glyphs/arrow_down.png'),
+    'EAST': (1, 'glyphs/arrow_right.png'),
+    'WEST': (1, 'glyphs/arrow_left.png'),
+}
 
 
 class TextWidget(Widget):
+
     def __init__(self, pos, text, size=None, fontname=None, fontsize=None,
                  colour=None):
         super(TextWidget, self).__init__(pos, size)
 
         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) // EIGHT_BIT_SCALE
+        self.colour = convert_colour(colour or (0, 0, 0))
+
+    def render_line(self, text):
+        text_surf = self.font.render(text, True, self.colour)
+        text_rect = text_surf.get_rect()
+        return pygame.transform.scale(
+            text_surf, (text_rect.width * EIGHT_BIT_SCALE,
+                        text_rect.height * EIGHT_BIT_SCALE))
+
+    def prepare(self):
+        self.font = resources.get_font(self.fontname, self.fontsize)
+        self.surface = self.render_line(self.text)
+        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, image_map):
+        if self.box_width != 0:
+            return self._wrapped_lines(image_map)
+        else:
+            return self.text.splitlines()
+
+    def _wrapped_lines(self, image_map):
+        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
+
+        line_count = 0
+        for line in self.text.splitlines():
+            current_words = []
+            for word in line.split():
+                suffix = ''
+                if word[-1] in '.,':
+                    suffix = word[-1]
+                    word = word[:-1]
+                markup_data = MARKUP_MAP.get(word, None)
+                if markup_data is not None:
+                    word = ' ' * markup_data[0]
+                word += suffix
+                current_words.append(word)
+                if words_fit(current_words):
+                    if markup_data is not None:
+                        size = self.font.size(
+                            ' '.join(current_words[:-1]) + ' ')
+                        pos = (size[0] * EIGHT_BIT_SCALE,
+                               size[1] * line_count * EIGHT_BIT_SCALE)
+                        pos = (pos[0] + self.padding, pos[1] + self.padding)
+                        image_map[pos] = resources.get_image(
+                            markup_data[1],
+                            transforms=(EIGHT_BIT, blender(self.colour)))
+                        continue
+                else:
+                    line_count += 1
+                    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)
-        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))
+        image_map = {}
+        rendered_lines = []
+        width, height = self.padding * 2, self.padding * 2
+        for line in self.lines(image_map):
+            line_surface = self.render_line(line)
+            line_rect = line_surface.get_rect()
+            rendered_lines.append(line_surface)
+            width = max(width, line_rect.width + self.padding * 2)
+            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
+        for pos, img in image_map.items():
+            self.surface.blit(img, pos)
+
     def draw(self, surface):
         surface.blit(self.surface, self.rect)