public static bool ButtonBehavior(Rect bb, int id, out bool outHovered, out bool outHeld, ButtonFlags flags = 0)
{
GUIContext g = Form.current.uiContext;
WindowManager w = g.WindowManager;
Window window = w.CurrentWindow;
if (flags.HaveFlag(ButtonFlags.Disabled))
{
outHovered = false;
outHeld = false;
if (g.ActiveId == id)
{
g.SetActiveID(0);
}
return(false);
}
if (!flags.HaveFlag(ButtonFlags.PressedOnClickRelease | ButtonFlags.PressedOnClick | ButtonFlags.PressedOnRelease | ButtonFlags.PressedOnDoubleClick))
{
flags |= ButtonFlags.PressedOnClickRelease;
}
bool pressed = false;
bool hovered = g.IsHovered(bb, id, flags.HaveFlag(ButtonFlags.FlattenChilds));
if (hovered)
{
g.SetHoverID(id);
if (!flags.HaveFlag(ButtonFlags.NoKeyModifiers) || (!Keyboard.Instance.KeyPressed(Key.LeftControl) && !Keyboard.Instance.KeyPressed(Key.LeftShift) && !Keyboard.Instance.KeyPressed(Key.LeftAlt)))
{
// | CLICKING | HOLDING with ButtonFlags.Repeat
// PressedOnClickRelease | <on release>* | <on repeat> <on repeat> .. (NOT on release) <-- MOST COMMON! (*) only if both click/release were over bounds
// PressedOnClick | <on click> | <on click> <on repeat> <on repeat> ..
// PressedOnRelease | <on release> | <on repeat> <on repeat> .. (NOT on release)
// PressedOnDoubleClick | <on dclick> | <on dclick> <on repeat> <on repeat> ..
if (flags.HaveFlag(ButtonFlags.PressedOnClickRelease) && Mouse.Instance.LeftButtonPressed)
{
g.SetActiveID(id, window); // Hold on ID
w.FocusWindow(window);
g.ActiveIdClickOffset = Mouse.Instance.Position - bb.Min;
}
if (((flags.HaveFlag(ButtonFlags.PressedOnClick) && Mouse.Instance.LeftButtonPressed) ||
(flags.HaveFlag(ButtonFlags.PressedOnDoubleClick) && Mouse.Instance.LeftButtonDoubleClicked)))
{
pressed = true;
g.SetActiveID(0);
w.FocusWindow(window);
}
if (flags.HaveFlag(ButtonFlags.PressedOnRelease) && Mouse.Instance.LeftButtonReleased)
{
if (!(flags.HaveFlag(ButtonFlags.Repeat) && Mouse.Instance.LeftButtonDownDurationPrev >= Keyboard.KeyRepeatDelay)) // Repeat mode trumps <on release>
{
pressed = true;
}
g.SetActiveID(0);
}
// 'Repeat' mode acts when held regardless of _PressedOn flags (see table above).
// Relies on repeat logic of IsMouseClicked() but we may as well do it ourselves if we end up exposing finer RepeatDelay/RepeatRate settings.
if (flags.HaveFlag(ButtonFlags.Repeat) && g.ActiveId == id && Mouse.Instance.LeftButtonDownDuration > 0.0f && g.IsMouseLeftButtonClicked(true))
{
pressed = true;
}
}
}
bool held = false;
if (g.ActiveId == id)
{
if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
held = true;
}
else
{
if (hovered && flags.HaveFlag(ButtonFlags.PressedOnClickRelease))
{
if (!(flags.HaveFlag(ButtonFlags.Repeat) && Mouse.Instance.LeftButtonDownDurationPrev >= Keyboard.KeyRepeatDelay)) // Repeat mode trumps <on release>
{
pressed = true;
}
}
g.SetActiveID(0);
}
}
// AllowOverlap mode (rarely used) requires previous frame HoveredId to be null or to match. This allows using patterns where a later submitted widget overlaps a previous one.
if (hovered && flags.HaveFlag(ButtonFlags.AllowOverlapMode) && (g.HoveredIdPreviousFrame != id && g.HoveredIdPreviousFrame != 0))
{
hovered = pressed = held = false;
}
outHovered = hovered;
outHeld = held;
return(pressed);
}