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import curses
class FieldPad:
def __init__(self, size=(1,1), charSize=1, colours=False):
self.pad = curses.newpad(size[1]+1, (size[0]+1)*charSize)
self.size = size
self.charSize = charSize
self.center = (0, 0)
self.colours = colours
self.changed = False
self.widget = None
def setWidget(self, widget):
self.widget = widget
def resize(self, width, height):
self.size = (width, height)
self.pad.resize(height+1, width*self.charSize)
self.widget.change()
win = self.widget.getWin()
if win:
win.erase()
win.noutrefresh()
def changeCell(self, x, y, sprites):
""" sprites must always have at least one element """
char, colour, bgcolour = sprites[0]
if bgcolour == None:
for (ch, co, bg) in sprites:
if bg != None:
bgcolour = bg
break
else:
bgcolour = 0
if colour != None and self.colours:
self.pad.addstr(y, x*self.charSize, char, self.colours.get(colour, bgcolour))
else:
self.pad.addstr(y, x*self.charSize, char)
self.widget.change()
def setCenter(self, pos):
self.center = pos
self.widget.change()
def getWidth(self):
return self.size[0]*self.charSize
def getHeight(self):
return self.size[1]
def _roundWidth(self, x):
return x // self.charSize * self.charSize
def update(self):
win = self.widget.getWin()
width, height = win.getSize()
x, y = win.getPos()
xmax = x + width
ymax = y + height
self.pad.noutrefresh(
max(0, min(self.getHeight()-height, self.center[1] - int(height/2))),
max(0, min(
self._roundWidth(self.getWidth()-width),
self._roundWidth(self.center[0]*self.charSize - int(width/2)))),
y,
x + max(0, (width - self.getWidth()) // 2),
ymax,
xmax)
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