Mercurial > boomslang
annotate gamelib/cursor.py @ 135:b43599b7f8a2
Cursor highlights
author | Stefano Rivera <stefano@rivera.za.net> |
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date | Tue, 24 Aug 2010 20:33:20 +0200 |
parents | 4223d66d88b4 |
children | a5972444ad1e |
rev | line source |
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66 | 1 # cursor.py |
2 # Copyright Boomslang team, 2010 (see COPYING File) | |
3 # Sprite Cursor | |
4 | |
135 | 5 from albow.resource import get_image |
70 | 6 from albow.widget import Widget |
66 | 7 from pygame.sprite import Sprite, RenderUpdates |
135 | 8 import pygame |
9 import pygame.color | |
70 | 10 import pygame.cursors |
11 import pygame.mouse | |
12 | |
66 | 13 class CursorSprite(Sprite): |
14 "A Sprite that follows the Cursor" | |
15 | |
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16 def __init__(self, filename, x, y): |
66 | 17 Sprite.__init__(self) |
135 | 18 self.filename = filename |
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19 self.pointer_x = x |
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20 self.pointer_y = y |
66 | 21 |
135 | 22 def load(self): |
23 if not hasattr(self, 'plain_image'): | |
24 self.plain_image = get_image('items', self.filename) | |
25 self.image = self.plain_image | |
26 self.rect = self.image.get_rect() | |
27 self.highlight = pygame.Surface(self.rect.size) | |
28 color = pygame.color.Color(255, 100, 100, 0) | |
29 self.highlight.fill(color) | |
30 | |
66 | 31 def update(self): |
135 | 32 pos = pygame.mouse.get_pos() |
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33 self.rect.left = pos[0] - self.pointer_x |
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34 self.rect.top = pos[1] - self.pointer_y |
66 | 35 |
135 | 36 def set_highlight(self, enable): |
37 self.image = self.plain_image.copy() | |
38 if enable: | |
39 self.image.blit(self.highlight, self.highlight.get_rect(), None, pygame.BLEND_MULT) | |
40 | |
41 | |
42 HAND = CursorSprite('hand.png', 12, 0) | |
43 | |
124 | 44 |
70 | 45 class CursorWidget(Widget): |
46 """Mix-in widget to ensure that mouse_move is propogated to parents""" | |
47 | |
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48 cursor = HAND |
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49 |
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50 def __init__(self, *args, **kwargs): |
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51 Widget.__init__(self, *args, **kwargs) |
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52 self._cursor_group = RenderUpdates() |
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53 self._loaded_cursor = None |
66 | 54 |
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55 def draw_all(self, _surface): |
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56 Widget.draw_all(self, _surface) |
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57 surface = self.get_root().surface |
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58 if self.cursor != self._loaded_cursor: |
135 | 59 self._loaded_cursor = self.cursor |
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60 if self.cursor is None: |
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61 pygame.mouse.set_visible(1) |
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62 self._cursor_group.empty() |
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63 else: |
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64 pygame.mouse.set_visible(0) |
135 | 65 self.cursor.load() |
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66 self._cursor_group.empty() |
135 | 67 self._cursor_group.add(self.cursor) |
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68 if self.cursor is not None: |
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69 self._cursor_group.update() |
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70 self._cursor_group.draw(surface) |
66 | 71 |
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72 def mouse_delta(self, event): |
66 | 73 self.invalidate() |
70 | 74 |
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75 def set_cursor(self, cursor): |
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76 CursorWidget.cursor = cursor |
135 | 77 |
78 def cursor_highlight(self, enable): | |
79 self.cursor.set_highlight(enable) |