#
# Albow - Layout widgets
#
from pygame import Rect
from widget import Widget
[docs]class RowOrColumn(Widget):
_is_gl_container = True
def __init__(self, size, items, kwds):
align = kwds.pop('align', 'c')
self.spacing = spacing = kwds.pop('spacing', 10)
expand = kwds.pop('expand', None)
if isinstance(expand, int):
expand = items[expand]
#-# Translation live update preparation
self.expand = expand
self.align = align
self._size = size
#-#
#if kwds:
# raise TypeError("Unexpected keyword arguments to Row or Column: %s"
# % kwds.keys())
Widget.__init__(self, **kwds)
#-# Translation live update preparation
self.calc_size(items)
[docs] def calc_size(self, _items=None):
if _items:
items = _items
else:
items = self.subwidgets
expand = self.expand
align = self.align
size = self._size
spacing = self.spacing
#-#
# If the 'expand' value is in 'h' or 'v', resize the widgets according
# to the larger one.
if type(expand) in (str, unicode):
w = 'n'
h = 'n'
if 'h' in expand:
# Expand horizontally
w = max([a.width for a in items])
if 'v' in expand:
# Expand vertically
h = max([a.height for a in items])
if w != 'n' and h == 'n':
for item in items:
item.width = w
elif w == 'n' and h != 'n':
for item in items:
item.height = h
elif w != 'n' and h != 'n':
for item in items:
item.width = w
item.height = h
d = self.d
longways = self.longways
crossways = self.crossways
axis = self.axis
k, attr2, attr3 = self.align_map[align]
w = 0
length = 0
if items:
if isinstance(expand, int):
expand = items[expand]
elif not expand:
expand = items[-1]
move = ''
for item in items:
r = item.rect
w = max(w, getattr(r, crossways))
if item is expand:
item.set_resizing(axis, 's')
move = 'm'
else:
item.set_resizing(axis, move)
length += getattr(r, longways)
if size is not None:
n = len(items)
if n > 1:
length += spacing * (n - 1)
setattr(expand.rect, longways, max(1, size - length))
h = w * k // 2
m = self.margin
px = h * d[1] + m
py = h * d[0] + m
sx = spacing * d[0]
sy = spacing * d[1]
for item in items:
setattr(item.rect, attr2, (px, py))
#-# Translation live update preparation
if _items:
self.add(item)
#-#
p = getattr(item.rect, attr3)
px = p[0] + sx
py = p[1] + sy
self.shrink_wrap()
[docs] def call_handler(self, name, *args):
# Automatically call the parent *_action methods
if Widget.call_handler(self, name, *args) == 'pass':
return self.call_parent_handler(name, *args)
#---------------------------------------------------------------------------
[docs]class Row(RowOrColumn):
d = (1, 0)
axis = 'h'
longways = 'width'
crossways = 'height'
align_map = {
't': (0, 'topleft', 'topright'),
'c': (1, 'midleft', 'midright'),
'b': (2, 'bottomleft', 'bottomright'),
}
def __init__(self, items, width=None, **kwds):
"""
Row(items, align=alignment, spacing=10, width=None, expand=None)
align = 't', 'c' or 'b'
"""
RowOrColumn.__init__(self, width, items, kwds)
#---------------------------------------------------------------------------
[docs]class Column(RowOrColumn):
d = (0, 1)
axis = 'v'
longways = 'height'
crossways = 'width'
align_map = {
'l': (0, 'topleft', 'bottomleft'),
'c': (1, 'midtop', 'midbottom'),
'r': (2, 'topright', 'bottomright'),
}
def __init__(self, items, height=None, **kwds):
"""
Column(items, align=alignment, spacing=10, height=None, expand=None)
align = 'l', 'c' or 'r'
"""
RowOrColumn.__init__(self, height, items, kwds)
#---------------------------------------------------------------------------
[docs]class Grid(Widget):
_is_gl_container = True
def __init__(self, rows, row_spacing=10, column_spacing=10, **kwds):
col_widths = [0] * len(rows[0])
row_heights = [0] * len(rows)
for j, row in enumerate(rows):
for i, widget in enumerate(row):
if widget:
col_widths[i] = max(col_widths[i], widget.width)
row_heights[j] = max(row_heights[j], widget.height)
row_top = 0
for j, row in enumerate(rows):
h = row_heights[j]
y = row_top + h // 2
col_left = 0
for i, widget in enumerate(row):
if widget:
w = col_widths[i]
x = col_left
widget.midleft = (x, y)
col_left += w + column_spacing
row_top += h + row_spacing
width = max(1, col_left - column_spacing)
height = max(1, row_top - row_spacing)
r = Rect(0, 0, width, height)
#print "albow.controls.Grid: r =", r ###
#print "...col_widths =", col_widths ###
#print "...row_heights =", row_heights ###
Widget.__init__(self, r, **kwds)
self.add(rows)
#---------------------------------------------------------------------------
[docs]class Frame(Widget):
# margin int spacing between border and widget
border_width = 1
margin = 2
def __init__(self, client, border_spacing=None, **kwds):
Widget.__init__(self, **kwds)
self.client = client
if border_spacing is not None:
self.margin = self.border_width + border_spacing
d = self.margin
w, h = client.size
self.size = (w + 2 * d, h + 2 * d)
client.topleft = (d, d)
self.add(client)
[docs] def call_handler(self, name, *args):
# Automatically call the parent *_action methods
if Widget.call_handler(self, name, *args) == 'pass':
return self.call_parent_handler(name, *args)
