# HG changeset patch
# User Simon Cross <hodgestar@gmail.com>
# Date 1252159324 0
# Node ID 9cc7bc5cd10c0b50e13f71f1923a333ed8e4d6ed
# Parent  390ef4387e05cb8444b1d109105c3e8ee61946b1
Refactor sprite cursor a bit to make sub-classing easier. Add (unused) SmallSpriteCursor sub-class. Remove unnecessary pygame.font import.

diff -r 390ef4387e05 -r 9cc7bc5cd10c gamelib/sprite_cursor.py
--- a/gamelib/sprite_cursor.py	Sat Sep 05 14:01:14 2009 +0000
+++ b/gamelib/sprite_cursor.py	Sat Sep 05 14:02:04 2009 +0000
@@ -4,7 +4,6 @@
    """
 
 import pygame
-import pygame.font
 from pygame.locals import SRCALPHA
 
 import imagecache
@@ -16,23 +15,44 @@
 warnings.filterwarnings("ignore", "os.popen3 is deprecated.")
 
 class SpriteCursor(Sprite):
-    """A Sprite used as an on-board cursor."""
+    """A Sprite used as an on-board cursor.
+       """
 
     def __init__(self, image_name, tv, cost=None):
         self._font = pygame.font.SysFont('Vera', 20, bold=True)
         image = imagecache.load_image(image_name, ["sprite_cursor"])
 
         if cost is not None:
-            image = image.copy()
-            text = self._font.render(str(cost), True, constants.FG_COLOR)
-            w, h = image.get_size()
-            x, y = text.get_size()
-            image.blit(text, (w - x, h - y))
+            image = self._apply_text(image, str(cost))
 
         # Create the sprite somewhere far off screen
         Sprite.__init__(self, image, (-1000, -1000))
         self._tv = tv
 
+    def _apply_text(self, image, stext):
+        """Apply the text to the image."""
+        image = image.copy()
+        text = self._font.render(stext, True, constants.FG_COLOR)
+        w, h = image.get_size()
+        x, y = text.get_size()
+        image.blit(text, (w - x, h - y))
+        return image
+
     def set_pos(self, tile_pos):
         """Set the cursor position on the gameboard."""
         self.rect.x, self.rect.y = self._tv.tile_to_view(tile_pos)
+
+class SmallSpriteCursor(SpriteCursor):
+    """A sprite cursor for use with images too small for the associated text."""
+
+    def _apply_text(self, image, stext):
+        text = self._font.render(stext, True, constants.FG_COLOR)
+        w, h = image.get_size()
+        x, y = text.get_size()
+
+        new_w, new_h = w + x, max(h, y)
+
+        new_image = pygame.Surface((new_w, new_h), SRCALPHA)
+        new_image.blit(image, (0, 0))
+        new_image.blit(text, (w, new_h - y))
+        return new_image