def _createColorButtons(self):
"""Generate color buttons based on the presets defined in the `colors`
module.
When a user clicks on the buttons, it changes the current color the
colorspace page is displaying.
"""
# create buttons for each preset color
colorList = list(colorNames)
btnSize = wx.Size(120, 24)
for color in colorList:
btn = GenButton(self, size=btnSize, label=color, name=color)
btn.colorData = col = Color(color, 'named')
btn.SetOwnBackgroundColour(col.rgba255)
# Compute the (perceived) luminance of the color, used to set the
# foreground text to ensure it's legible on the background. Uses the
# the luminance part of formula to convert RGB1 to YIQ.
luminance = np.sum(np.asarray((0.299, 0.587, 0.114)) * col.rgb1)
if luminance < 0.5:
btn.SetForegroundColour(wx.WHITE)
else:
btn.SetForegroundColour(wx.BLACK)
btn.SetBezelWidth(0)
btn.SetUseFocusIndicator(False)
btn.Bind(wx.EVT_BUTTON, self.onClick)
self.sizer.Add(btn, 1, wx.ALL | wx.EXPAND, 0)
def __init__(self, parent):
ScrolledPanel.__init__(self, parent, size=(120,400), style=wx.VSCROLL | wx.BORDER_NONE)
self.sizer = wx.GridBagSizer()
self.parent = parent
for i in range(len(colorNames)):
color = list(colorNames)[i]
btn = GenButton(self, size=(100, 30),
label=color, name=color)
btn.SetOwnBackgroundColour(Color(color, 'named').rgba255)
btn.SetBezelWidth(0)
btn.SetUseFocusIndicator(False)
btn.colorData = color
#btn.SetBackgroundColour(wx.Colour(Color(color, 'named').rgba1))
btn.Bind(wx.EVT_BUTTON, self.onClick)
self.sizer.Add(btn, pos=(i,0))
self.SetSizer(self.sizer)
self.SetupScrolling()