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"""All sliders and scroll bar widgets have the same parameters.
<pre>Slider(value,min,max,size)</pre>
<dl>
<dt>value<dd>initial value
<dt>min<dd>minimum value
<dt>max<dd>maximum value
<dt>size<dd>size of bar in pixels
</dl>
"""
import pygame
from pygame.locals import *
from const import *
import widget
import app
import table
import basic
_SLIDER_HORIZONTAL = 0
_SLIDER_VERTICAL = 1
class _slider(widget.Widget):
def __init__(self,value,orient,min,max,size,step=1,**params):
params.setdefault('cls','slider')
widget.Widget.__init__(self,**params)
self.min,self.max,self.value,self.orient,self.size,self.step = min,max,value,orient,size,step
def paint(self,s):
self.value = self.value
r = pygame.rect.Rect(0,0,self.style.width,self.style.height)
if self.orient == _SLIDER_HORIZONTAL:
r.x = (self.value-self.min) * (r.w-self.size) / max(1,self.max-self.min);
r.w = self.size;
else:
r.y = (self.value-self.min) * (r.h-self.size) / max(1,self.max-self.min);
r.h = self.size;
self.bar = r
app.App.app.theme.render(s,self.style.bar,r)
def event(self,e):
used = None
r = pygame.rect.Rect(0,0,self.style.width,self.style.height)
adj = 0
if e.type == ENTER: self.repaint()
elif e.type == EXIT: self.repaint()
elif e.type == MOUSEBUTTONDOWN:
if self.bar.collidepoint(e.pos):
self.grab = e.pos[0],e.pos[1]
self.grab_value = self.value
else:
x,y,adj = e.pos[0],e.pos[1],1
self.grab = None
self.repaint()
elif e.type == MOUSEBUTTONUP:
#x,y,adj = e.pos[0],e.pos[1],1
self.repaint()
elif e.type == MOUSEMOTION:
if 1 in e.buttons and self.container.myfocus is self:
if self.grab != None:
rel = e.pos[0]-self.grab[0],e.pos[1]-self.grab[1]
if self.orient == _SLIDER_HORIZONTAL:
d = (r.w - self.size)
if d != 0: self.value = self.grab_value + ((self.max-self.min) * rel[0] / d)
else:
d = (r.h - self.size)
if d != 0: self.value = self.grab_value + ((self.max-self.min) * rel[1] / d)
else:
x,y,adj = e.pos[0],e.pos[1],1
elif e.type is KEYDOWN:
if self.orient == _SLIDER_HORIZONTAL and e.key == K_LEFT:
self.value -= self.step
used = True
elif self.orient == _SLIDER_HORIZONTAL and e.key == K_RIGHT:
self.value += self.step
used = True
elif self.orient == _SLIDER_VERTICAL and e.key == K_UP:
self.value -= self.step
used = True
elif self.orient == _SLIDER_VERTICAL and e.key == K_DOWN:
self.value += self.step
used = True
if adj:
if self.orient == _SLIDER_HORIZONTAL:
d = self.size/2 - (r.w/(self.max-self.min+1))/2
self.value = (x-d) * (self.max-self.min) / (r.w-self.size+1) + self.min
else:
d = self.size/2 - (r.h/(self.max-self.min+1))/2
self.value = (y-d) * (self.max-self.min) / (r.h-self.size+1) + self.min
self.pcls = ""
if self.container.myhover is self: self.pcls = "hover"
if (self.container.myfocus is self and 1 in pygame.mouse.get_pressed()): self.pcls = "down"
return used
def __setattr__(self,k,v):
if k == 'value':
v = int(v)
v = max(v,self.min)
v = min(v,self.max)
_v = self.__dict__.get(k,NOATTR)
self.__dict__[k]=v
if k == 'value' and _v != NOATTR and _v != v:
self.send(CHANGE)
self.repaint()
if hasattr(self,'size'):
sz = min(self.size,max(self.style.width,self.style.height))
sz = max(sz,min(self.style.width,self.style.height))
self.__dict__['size'] = sz
if hasattr(self,'max') and hasattr(self,'min'):
if self.max < self.min: self.max = self.min
class VSlider(_slider):
"""A verticle slider.
<pre>VSlider(value,min,max,size)</pre>
"""
def __init__(self,value,min,max,size,step=1,**params):
params.setdefault('cls','vslider')
_slider.__init__(self,value,_SLIDER_VERTICAL,min,max,size,step,**params)
class HSlider(_slider):
"""A horizontal slider.
<pre>HSlider(value,min,max,size)</pre>
"""
def __init__(self,value,min,max,size,step=1,**params):
params.setdefault('cls','hslider')
_slider.__init__(self,value,_SLIDER_HORIZONTAL,min,max,size,step,**params)
class HScrollBar(table.Table):
"""A horizontal scroll bar.
<pre>HScrollBar(value,min,max,size,step=1)</pre>
"""
def __init__(self,value,min,max,size,step=1,**params):
params.setdefault('cls','hscrollbar')
table.Table.__init__(self,**params)
self.slider = _slider(value,_SLIDER_HORIZONTAL,min,max,size,step=step,cls=self.cls+'.slider')
self.minus = basic.Image(self.style.minus)
self.minus.connect(MOUSEBUTTONDOWN,self._click,-1)
self.slider.connect(CHANGE,self.send,CHANGE)
self.minus2 = basic.Image(self.style.minus)
self.minus2.connect(MOUSEBUTTONDOWN,self._click,-1)
self.plus = basic.Image(self.style.plus)
self.plus.connect(MOUSEBUTTONDOWN,self._click,1)
self.size = size
def _click(self,value):
self.slider.value += self.slider.step*value
def resize(self,width=None,height=None):
self.clear()
self.tr()
w = self.style.width
h = self.slider.style.height
ww = 0
if w > (h*2 + self.minus.style.width+self.plus.style.width):
self.td(self.minus)
ww += self.minus.style.width
self.td(self.slider)
if w > (h*2 + self.minus.style.width+self.minus2.style.width+self.plus.style.width):
self.td(self.minus2)
ww += self.minus2.style.width
if w > (h*2 + self.minus.style.width+self.plus.style.width):
self.td(self.plus)
ww += self.plus.style.width
#HACK: handle theme sizing properly
from app import App
xt,xr,xb,xl = App.app.theme.getspacing(self.slider)
ww += xr+xl
self.slider.style.width = self.style.width - ww
setattr(self.slider,'size',self.size * self.slider.style.width / max(1,self.style.width))
return table.Table.resize(self,width,height)
def __setattr__(self,k,v):
if k in ('min','max','value','step'):
return setattr(self.slider,k,v)
self.__dict__[k]=v
def __getattr__(self,k):
if k in ('min','max','value','step'):
return getattr(self.slider,k)
return table.Table.__getattr__(self,k) #self.__dict__[k]
class VScrollBar(table.Table):
"""A vertical scroll bar.
<pre>VScrollBar(value,min,max,size,step=1)</pre>
"""
def __init__(self,value,min,max,size,step=1,**params):
params.setdefault('cls','vscrollbar')
table.Table.__init__(self,**params)
self.minus = basic.Image(self.style.minus)
self.minus.connect(MOUSEBUTTONDOWN,self._click,-1)
self.minus2 = basic.Image(self.style.minus)
self.minus2.connect(MOUSEBUTTONDOWN,self._click,-1)
self.plus = basic.Image(self.style.plus)
self.plus.connect(MOUSEBUTTONDOWN,self._click,1)
self.slider = _slider(value,_SLIDER_VERTICAL,min,max,size,step=step,cls=self.cls+'.slider')
self.slider.connect(CHANGE,self.send,CHANGE)
self.size = size
def _click(self,value):
self.slider.value += self.slider.step*value
def resize(self,width=None,height=None):
self.clear()
h = self.style.height
w = self.slider.style.width
hh = 0
if h > (w*2 + self.minus.style.height+self.plus.style.height):
self.tr()
self.td(self.minus)
hh += self.minus.style.height
self.tr()
self.td(self.slider)
if h > (w*2 + self.minus.style.height+self.minus2.style.height+self.plus.style.height):
self.tr()
self.td(self.minus2)
hh += self.minus2.style.height
if h > (w*2 + self.minus.style.height+self.plus.style.height):
self.tr()
self.td(self.plus)
hh += self.plus.style.height
#HACK: handle theme sizing properly
from app import App
xt,xr,xb,xl = App.app.theme.getspacing(self.slider)
hh += xt+xb
self.slider.style.height = self.style.height - hh
setattr(self.slider,'size',self.size * self.slider.style.height / max(1,self.style.height))
return table.Table.resize(self,width,height)
def __setattr__(self,k,v):
if k in ('min','max','value','step'):
return setattr(self.slider,k,v)
self.__dict__[k]=v
def __getattr__(self,k):
if k in ('min','max','value','step'):
return getattr(self.slider,k)
return table.Table.__getattr__(self,k)
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