def _paint_palette_layout(self, cr):
if self._palette is None:
return
state = self.get_state()
style = self.get_style()
dx, dy = self.get_painting_offset()
bg_col = RGBColor.new_from_gdk_color(style.bg[state])
self._palette.render(cr, rows=self._rows, columns=self._columns,
swatch_size=self._swatch_size,
bg_color=bg_col,
offset_x=dx, offset_y=dy,
rtl=False)
def _draw_cb(self, widget, cr):
if self._palette is None:
return
alloc = widget.get_allocation()
w, h = alloc.width, alloc.height
s_max = 16 # min(w, h)
s_min = 4
ncolumns = self._palette.get_columns()
ncolors = len(self._palette)
if ncolors == 0:
return
if not ncolumns == 0:
s = w / ncolumns
s = clamp(s, s_min, s_max)
s = int(s)
if s*ncolumns > w:
ncolumns = 0
if ncolumns == 0:
s = math.sqrt(float(w*h) / ncolors)
s = clamp(s, s_min, s_max)
s = int(s)
ncolumns = max(1, int(w / s))
nrows = int(ncolors // ncolumns)
if ncolors % ncolumns != 0:
nrows += 1
nrows = max(1, nrows)
dx, dy = 0, 0
if nrows*s < h:
dy = int(h - nrows*s) / 2
if ncolumns*s < w:
dx = int(w - ncolumns*s) / 2
state = self.get_state()
style = self.get_style()
bg_color = RGBColor.new_from_gdk_color(style.bg[state])
self._palette.render(cr, rows=nrows, columns=ncolumns,
swatch_size=s, bg_color=bg_color,
offset_x=dx, offset_y=dy,
rtl=False)
