Mercurial > boomslang
diff pyntnclick/resources.py @ 854:79b5c1be9a5e default tip
Remove pyntnclick, it's its own library, now
author | Stefano Rivera <stefano@rivera.za.net> |
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date | Sat, 21 Jun 2014 22:06:09 +0200 |
parents | f95830b58336 |
children |
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--- a/pyntnclick/resources.py Sat Jun 21 22:04:35 2014 +0200 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,117 +0,0 @@ -# -*- test-case-name: pyntnclick.tests.test_resources -*- - -import os -from pkg_resources import resource_filename - -import pygame - - -class ResourceNotFound(Exception): - pass - - -class Resources(object): - """Resource loader and manager. - - The `CONVERT_ALPHA` flag allows alpha conversions to be disabled so that - images may be loaded without having a display initialised. This is useful - in unit tests, for example. - """ - - DEFAULT_RESOURCE_MODULE = "pyntnclick.data" - CONVERT_ALPHA = True - - def __init__(self, resource_module, language=None): - self.resource_module = resource_module - self.lang_dialect = language - self.language = language - if language: - self.language = language.split('_', 1)[0] - self._image_cache = {} - self._font_cache = {} - self._transformed_image_cache = {} - - def get_resource_path(self, *resource_path_fragments): - """Find the resource in one of a number of different places. - - The following directories are searched, in order: - - * /<lang>_<dialect>/<resource_module>/ - * /<lang>/<resource_module>/ - * <resource_module>/ - * /<lang>_<dialect>/<default_resource_module>/ - * /<lang>/<default_resource_module>/ - * <default_resource_module>/ - - If the `language` attribute is `None`, the paths with <lang> in them - are skipped. - """ - resource_name = '/'.join(resource_path_fragments) - resource_name = os.path.join(*resource_name.split('/')) - for path in self.get_paths(resource_name): - if os.path.exists(path): - return path - raise ResourceNotFound(resource_name) - - def get_paths(self, resource_path): - """Get list of resource paths to search. - """ - paths = [] - for module in [self.resource_module, self.DEFAULT_RESOURCE_MODULE]: - if self.lang_dialect: - fn = os.path.join(self.lang_dialect, resource_path) - paths.append(resource_filename(module, fn)) - if self.language != self.lang_dialect: - fn = os.path.join(self.language, resource_path) - paths.append(resource_filename(module, fn)) - paths.append(resource_filename(module, resource_path)) - return paths - - def get_image(self, *image_name_fragments, **kw): - """Load an image and optionally apply mutators. - - All positional params end up in `image_name_fragments` and are joined - with the path separator. - - Two keyword parameters are also accepted: - - * `transforms` may contain transforms, which modify an image in-place - to apply various effects. - - * `basedir` defaults to 'images', but may be overridden to load images - from other places. ('icons', for example.) - """ - - transforms = kw.get('transforms', ()) - basedir = kw.get('basedir', 'images') - - image_path = self.get_resource_path(basedir, *image_name_fragments) - - key = (image_path, transforms) - if key in self._transformed_image_cache: - # We already have this cached, so shortcut the whole process. - return self._transformed_image_cache[key] - - if image_path not in self._image_cache: - image = pygame.image.load(image_path) - if self.CONVERT_ALPHA: - image = image.convert_alpha(pygame.display.get_surface()) - self._image_cache[image_path] = image - image = self._image_cache[image_path] - - # Apply any transforms we're given. - for transform in transforms: - image = transform(image) - self._transformed_image_cache[key] = image - - return image - - def get_font(self, file_name, font_size, basedir=None): - """Load a a font, cached if possible.""" - if basedir is None: - basedir = 'fonts' - key = (basedir, file_name, font_size) - if key not in self._font_cache: - fontfn = self.get_resource_path(basedir, file_name) - self._font_cache[key] = pygame.font.Font(fontfn, font_size) - return self._font_cache[key]