private static void ChangeAllWindowCommandsBrush(this MetroWindow window, Brush brush, Position position = Position.Top)
{
if (brush == null)
{
// set the theme to light by default
window.InvokeActionOnWindowCommands(x => x.SetValue(WindowCommands.ThemeProperty, Theme.Light),
x => x.SetValue(WindowButtonCommands.ThemeProperty, Theme.Light), position);
// clear the foreground property
window.InvokeActionOnWindowCommands(x => x.ClearValue(Control.ForegroundProperty), null, position);
}
else
{
// calculate brush color lightness
var color = ((SolidColorBrush)brush).Color;
var r = color.R / 255.0f;
var g = color.G / 255.0f;
var b = color.B / 255.0f;
var max = r;
var min = r;
if (g > max)
{
max = g;
}
if (b > max)
{
max = b;
}
if (g < min)
{
min = g;
}
if (b < min)
{
min = b;
}
var lightness = (max + min) / 2;
// set the theme based on color lightness
if (lightness > 0.1)
{
window.InvokeActionOnWindowCommands(x => x.SetValue(WindowCommands.ThemeProperty, Theme.Light),
x => x.SetValue(WindowButtonCommands.ThemeProperty, Theme.Light), position);
}
else
{
window.InvokeActionOnWindowCommands(x => x.SetValue(WindowCommands.ThemeProperty, Theme.Dark),
x => x.SetValue(WindowButtonCommands.ThemeProperty, Theme.Dark), position);
}
// set the foreground property
window.InvokeActionOnWindowCommands(x => x.SetValue(Control.ForegroundProperty, brush), null, position);
}
}
