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"""These widgets are all grouped together because they are non-interactive widgets.
"""
import pygame
from const import *
import widget
# Turns a descriptive string or a tuple into a pygame color
def parse_color(desc):
if (isinstance(desc, pygame.Color)):
# Already a color
return desc
elif (desc and desc[0] == "#"):
# Because of a bug in pygame 1.8.1 we need to explicitly define the
# alpha value otherwise it will default to transparent.
if (len(desc) == 7):
desc += "FF"
return pygame.Color(desc)
class Spacer(widget.Widget):
"""A invisible space.
<pre>Spacer(width,height)</pre>
"""
def __init__(self,width,height,**params):
params.setdefault('focusable',False)
widget.Widget.__init__(self,width=width,height=height,**params)
class Color(widget.Widget):
"""A block of color.
<p>The color can be changed at run-time.</p>
<pre>Color(value=None)</pre>
<strong>Example</strong>
<code>
c = Color()
c.value = (255,0,0)
c.value = (0,255,0)
</code>
"""
def __init__(self,value=None,**params):
params.setdefault('focusable',False)
if value != None: params['value']=value
widget.Widget.__init__(self,**params)
def paint(self,s):
if hasattr(self,'value'): s.fill(self.value)
def __setattr__(self,k,v):
if k == 'value' and type(v) == str:
v = parse_color(v)
_v = self.__dict__.get(k,NOATTR)
self.__dict__[k]=v
if k == 'value' and _v != NOATTR and _v != v:
self.send(CHANGE)
self.repaint()
class Label(widget.Widget):
"""A text label.
<pre>Label(value)</pre>
<dl>
<dt>value<dd>text to be displayed
</dl>
<strong>Example</strong>
<code>
w = Label(value="I own a rubber chicken!")
w = Label("3 rubber chickens")
</code>
"""
def __init__(self,value,**params):
params.setdefault('focusable',False)
params.setdefault('cls','label')
widget.Widget.__init__(self,**params)
self.value = value
self.font = self.style.font
self.style.width, self.style.height = self.font.size(self.value)
def paint(self,s):
s.blit(self.font.render(self.value, 1, self.style.color),(0,0))
class Image(widget.Widget):
"""An image.
<pre>Image(value)</pre>
<dl>
<dt>value<dd>a file name or a pygame.Surface
</dl>
"""
def __init__(self,value,**params):
params.setdefault('focusable',False)
widget.Widget.__init__(self,**params)
if type(value) == str: value = pygame.image.load(value)
ow,oh = iw,ih = value.get_width(),value.get_height()
sw,sh = self.style.width,self.style.height
if sw and not sh:
iw,ih = sw,ih*sw/iw
elif sh and not sw:
iw,ih = iw*sh/ih,sh
elif sw and sh:
iw,ih = sw,sh
if (ow,oh) != (iw,ih):
value = pygame.transform.scale(value,(iw,ih))
self.style.width,self.style.height = iw,ih
self.value = value
def paint(self,s):
s.blit(self.value,(0,0))
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