diff options
Diffstat (limited to 'TurtleArt/taconstants.py')
| -rw-r--r-- | TurtleArt/taconstants.py | 99 |
1 files changed, 90 insertions, 9 deletions
diff --git a/TurtleArt/taconstants.py b/TurtleArt/taconstants.py index 835209e..ba0b5a7 100644 --- a/TurtleArt/taconstants.py +++ b/TurtleArt/taconstants.py @@ -79,20 +79,101 @@ XO4 = 'xo4' UNKNOWN = 'unknown' TMP_SVG_PATH = '/tmp/turtle_output.svg' + + +class Color(object): + """ A color used in block programs (e.g., as pen color). """ + + def __init__(self, name, color=0, shade=50, gray=100): + """ name -- a string with the name of the color, e.g., 'red' + color -- the hue (0-100, or None for white, gray, and black) + shade -- the lightness (0 is black, 100 is white) + gray -- the saturation (0 is gray, 100 is fully saturated) """ + self.name = name + self.color = color + self.shade = shade + self.gray = gray + + def __int__(self): + if self.color is None: + return int(self.shade) + else: + return int(self.color) + + def __float__(self): + return float(int(self)) + + def __str__(self): + return str(self.name) + + def __repr__(self): + return '%s (%s/%d/%d)' % (str(self.name), str(self.color), + self.shade, self.gray) + + def __eq__(self, other): + """ A Color is equivalent to + * another Color with the same color, shade, and gray values + * an integer, float, or long that equals int(self) """ + if isinstance(other, Color): + return (self.color == other.color and self.shade == other.shade + and self.gray == other.gray) + elif isinstance(other, (int, float, long)): + return int(self) == other + ## * a basestring that equals str(self) + #elif isinstance(other, basestring): + # return str(self) == other + else: + return False + + def __lt__(self, other): + """ A Color is less than + * another Color whose name appears earlier in the alphabet + * a number that is less than int(self) + * a string that appears before the underscore in the ASCII table """ + if isinstance(other, Color): + return str(self) < str(other) + elif isinstance(other, (int, float, long)): + return int(self) < other + elif isinstance(other, basestring): + return '_' + str(self) < other + else: + return False + + def __gt__(self, other): + """ A Color is greater than + * another Color whose name appears later in the alphabet + * a number that is greater than int(self) + * a string that appears after the underscore in the ASCII table """ + if isinstance(other, Color): + return str(self) > str(other) + elif isinstance(other, (int, float, long)): + return int(self) > other + elif isinstance(other, basestring): + return '_' + str(self) > other + else: + return False + + def is_gray(self): + """ Return True iff this color is white, gray, or black, i.e. if its + hue is not set or its saturation is zero. """ + return self.color is None or not self.gray + + + CONSTANTS = {'leftpos': None, 'toppos': None, 'rightpos': None, 'bottompos': None, 'width': None, 'height': None, - 'black': '_black', 'white': '_white', 'red': '_red', - 'orange': '_orange', 'yellow': '_yellow', 'green': '_green', - 'cyan': '_cyan', 'blue': '_blue', 'purple': '_purple', + 'black': Color('black', None, 0, 0), + 'white': Color('white', None, 100, 0), + 'red': Color('red', 0, 50, 100), + 'orange': Color('orange', 10, 50, 100), + 'yellow': Color('yellow', 20, 50, 100), + 'green': Color('green', 40, 50, 100), + 'cyan': Color('cyan', 50, 50, 100), + 'blue': Color('blue', 70, 50, 100), + 'purple': Color('purple', 90, 50, 100), 'titlex': None, 'titley': None, 'leftx': None, 'topy': None, 'rightx': None, 'bottomy': None} -COLORDICT = {'_black': [None, 0, 0], '_white': [None, 100, 0], - '_red': [0, 50, 100], '_orange': [10, 50, 100], - '_yellow': [20, 50, 100], '_green': [40, 50, 100], - '_cyan': [50, 50, 100], '_blue': [70, 50, 100], - '_purple': [90, 50, 100]} - # Blocks that are expandable EXPANDABLE_STYLE = ['boolean-style', 'compare-porch-style', 'compare-style', 'number-style-porch', 'number-style', 'basic-style-2arg', |