/// <summary>
/// Create a polyon-button.
/// </summary>
/// <param name="rect">position and size of the control</param>
/// <param name="points"><see cref="Point"/> list of the polygon.</param>
/// <param name="textRect">the rect that occupied by the text</param>
/// <param name="text">text to display on the button</param>
/// <returns>true when the users clicks the button.</returns>
public static bool PolygonButton(Rect rect, IReadOnlyList <Point> points, Rect textRect, string text)
{
var window = GetCurrentWindow();
if (window.SkipItems)
{
return(false);
}
//get or create the root node
var id = window.GetID(text);
var container = window.AbsoluteVisualList;
var node = (Node)container.Find(visual => visual.Id == id);
text = Utility.FindRenderedText(text);
if (node == null)
{
//create button node
node = new Node(id, $"PolygonButton<{text}>");
container.Add(node);
node.UseBoxModel = true;
node.RuleSet.Replace(GUISkin.Current[GUIControlName.Button]);
}
node.ActiveSelf = true;
// rect
node.Rect = window.GetRect(rect);
textRect = window.GetRect(textRect);
// interact
var mousePos = Mouse.Instance.Position;
var g = GetCurrentContext();
var clicked = false;
var hovered = MathEx.IsPointInPolygon(mousePos, points, (Vector)node.Rect.Location);
g.KeepAliveID(id);
var state = GUIState.Normal;
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed)//start track
{
g.SetActiveID(id);
}
if (Mouse.Instance.LeftButtonReleased)//end track
{
clicked = true;
g.SetActiveID(0);
}
}
if (hovered)
{
state = GUIState.Hover;
if (g.ActiveId == id && Mouse.Instance.LeftButtonState == KeyState.Down)
{
state = GUIState.Active;
}
}
node.State = state;
// last item state
window.TempData.LastItemState = node.State;
// draw
GUIAppearance.DrawPolygonButton(points, textRect, text, node);
return(clicked);
}
/// <summary>
/// Create an auto-layout polyon-button.
/// </summary>
/// <param name="points"><see cref="Point"/> list of the polygon.</param>
/// <param name="textRect">the rect that occupied by the text</param>
/// <param name="text">text to display on the button</param>
/// <param name="options">layout options that specify layouting properties. See also <see cref="GUILayout.Width"/>, <see cref="GUILayout.Height"/>, <see cref="GUILayout.ExpandWidth"/>, <see cref="GUILayout.ExpandHeight"/>, <see cref="GUILayout.StretchWidth"/>, <see cref="GUILayout.StretchHeight"/></param>
/// <returns>true when the users clicks the button.</returns>
internal static bool PolygonButton(IReadOnlyList <Point> points, Rect textRect, string text, LayoutOptions?options)
{
if (points.Count < 3)
{
return(false);
}
var window = GetCurrentWindow();
if (window.SkipItems)
{
return(false);
}
//get or create the root node
var id = window.GetID(text);
var container = window.RenderTree.CurrentContainer;
var node = container.GetNodeById(id);
text = Utility.FindRenderedText(text);
if (node == null)
{
//create node
node = new Node(id, $"PolygonButton<{text}>");
node.UseBoxModel = true;
node.RuleSet.Replace(GUISkin.Current[GUIControlName.Button]);
var boundingRect = new Rect(points[0], points[1]);
foreach (var point in points)
{
boundingRect = Rect.Union(boundingRect, point);
}
node.AttachLayoutEntry(boundingRect.Size);
}
container.AppendChild(node);
node.RuleSet.ApplyOptions(options);
node.ActiveSelf = true;
// rect
node.Rect = window.GetRect(id);
textRect.Offset((Vector)node.Rect.Location);
// interact
var mousePos = Mouse.Instance.Position;
var g = GetCurrentContext();
var clicked = false;
var hovered = MathEx.IsPointInPolygon(mousePos, points, (Vector)node.Rect.Location);
g.KeepAliveID(id);
var state = GUIState.Normal;
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed)//start track
{
g.SetActiveID(id);
}
if (Mouse.Instance.LeftButtonReleased)//end track
{
clicked = true;
g.SetActiveID(0);
}
}
if (hovered)
{
state = GUIState.Hover;
if (g.ActiveId == id && Mouse.Instance.LeftButtonState == KeyState.Down)
{
state = GUIState.Active;
}
}
node.State = state;
// last item state
window.TempData.LastItemState = node.State;
// draw
GUIAppearance.DrawPolygonButton(points, textRect, text, node);
return(clicked);
}
