public override Color GetButtonTextColor(IButtonElement button)
{
var styleColor = button.ButtonColor ?? StyleColor.Default;
var color = styleColor.GetColor(button.IsActive ? _activeButtonColor : _buttonColor);
if (button.IsPressed)
{
color = color.Darken(0.3f);
}
else if (button.IsHovered)
{
color = color.Lighten(0.2f);
}
var brightness = color.ToHsl().Luminance;
if (brightness > 0.5f)
{
return(Color.Black);
}
else
{
return(Color.White);
}
}
public static void ElementClicked(VisualElement visualElement, IButtonElement ButtonElementManager)
{
if (visualElement.IsEnabled == true)
{
ButtonElementManager.Command?.Execute(ButtonElementManager.CommandParameter);
ButtonElementManager.PropagateUpClicked();
}
}
public static void ElementPressed(VisualElement visualElement, IButtonElement ButtonElementManager)
{
if (visualElement.IsEnabled == true)
{
ButtonElementManager.SetIsPressed(true);
visualElement.ChangeVisualStateInternal();
ButtonElementManager.PropagateUpPressed();
}
}
static void OnCommandChanging(BindableObject bo, object o, object n)
{
IButtonElement button = (IButtonElement)bo;
if (o != null)
{
(o as ICommand).CanExecuteChanged -= button.OnCommandCanExecuteChanged;
}
}
public static void ElementReleased(VisualElement visualElement, IButtonElement ButtonElementManager)
{
if (visualElement.IsEnabled == true)
{
IButtonController buttonController = ButtonElementManager as IButtonController;
ButtonElementManager.SetIsPressed(false);
visualElement.ChangeVisualStateInternal();
ButtonElementManager.PropagateUpReleased();
}
}
public static void CommandCanExecuteChanged(object sender, EventArgs e)
{
IButtonElement ButtonElementManager = (IButtonElement)sender;
ICommand cmd = ButtonElementManager.Command;
if (cmd != null)
{
ButtonElementManager.IsEnabledCore = cmd.CanExecute(ButtonElementManager.CommandParameter);
}
}
public static void CommandChanged(IButtonElement sender)
{
if (sender.Command != null)
{
CommandCanExecuteChanged(sender, EventArgs.Empty);
}
else
{
sender.IsEnabledCore = true;
}
}
static void OnCommandChanged(BindableObject bo, object o, object n)
{
IButtonElement button = (IButtonElement)bo;
if (n is ICommand newCommand)
{
newCommand.CanExecuteChanged += button.OnCommandCanExecuteChanged;
}
CommandChanged(button);
}
public override void DrawButton(GuiRenderer renderer, IButtonElement button)
{
var styleColor = button.ButtonColor ?? StyleColor.Default;
var color = styleColor.GetColor(button.IsActive ? _activeButtonColor : _buttonColor);
if (button.IsPressed)
{
color = color.Darken(0.3f);
}
else if (button.IsHovered)
{
color = color.Lighten(0.2f);
}
var borderColor = color.Lighten(0.15f);
renderer.FillRectangle(button.BoundingBox, color);
renderer.DrawRectangle(button.BoundingBox, borderColor, 2);
}
public virtual Color GetButtonTextColor(IButtonElement button)
{
return(Color.Black);
}
public abstract void DrawButton(GuiRenderer renderer, IButtonElement button);
