public int GetID <T>(T obj) where T : class
{
int seed = this.IDStack.Peek();
var id = this.Hash(seed, obj.GetHashCode());
GUIContext g = Application.ImGuiContext;
g.KeepAliveID(id);
return(id);
}
public int GetID(int int_id)
{
int seed = this.IDStack.Peek();
var id = this.Hash(seed, int_id);
GUIContext g = Form.current.uiContext;
g.KeepAliveID(id);
return(id);
}
public int GetID(int int_id)
{
int seed = this.IDStack.Peek();
var id = this.Hash(seed, int_id);
GUIContext g = Application.ImGuiContext;
g.KeepAliveID(id);
return(id);
}
public static double SliderBehavior(Rect sliderRect, int id, bool horizontal, double value, double minValue, double maxValue, out bool hovered, out bool held)
{
GUIContext g = Form.current.uiContext;
hovered = false;
held = false;
hovered = g.IsHovered(sliderRect, id);
g.KeepAliveID(id);
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed) //start track
{
g.SetActiveID(id);
}
}
if (g.ActiveId == id)
{
if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
var mousePos = Mouse.Instance.Position;
if (horizontal)
{
var leftPoint = new Point(sliderRect.X + 10, sliderRect.Y + sliderRect.Height / 2);
var rightPoint = new Point(sliderRect.Right - 10, sliderRect.Y + sliderRect.Height / 2);
var minX = leftPoint.X;
var maxX = rightPoint.X;
var currentPointX = MathEx.Clamp(mousePos.X, minX, maxX);
value = minValue + (currentPointX - minX) / (maxX - minX) * (maxValue - minValue);
}
else
{
var upPoint = new Point(sliderRect.X + sliderRect.Width / 2, sliderRect.Y + 10);
var bottomPoint = new Point(sliderRect.X + sliderRect.Width / 2, sliderRect.Bottom - 10);
var minY = upPoint.Y;
var maxY = bottomPoint.Y;
var currentPointY = MathEx.Clamp(mousePos.Y, minY, maxY);
value = (float)(minValue + (currentPointY - minY) / (maxY - minY) * (maxValue - minValue));
}
}
else //end track
{
g.SetActiveID(0);
}
}
if (g.ActiveId == id)
{
held = true;
}
return(value);
}
public int GetID(ITexture texture)
{
int seed = IDStack.Peek();
int int_id = texture.GetHashCode();
var id = Hash(seed, int_id);
GUIContext g = Form.current.uiContext;
g.KeepAliveID(id);
return(id);
}
public int GetID(string str_id)
{
var seed = this.IDStack.Peek();
var hashCharIndex = str_id.IndexOf("##", StringComparison.Ordinal);
string customId = null;
if (hashCharIndex > 0)
{
customId = str_id.Substring(hashCharIndex + 1);
}
var subId = string.IsNullOrWhiteSpace(customId) ? str_id.GetHashCode() : customId.GetHashCode();
var id = this.Hash(seed, subId);
GUIContext g = Form.current.uiContext;
g.KeepAliveID(id);
return(id);
}
public static bool ToggleBehavior(Rect rect, int id, bool value, out bool hovered)
{
GUIContext g = Form.current.uiContext;
hovered = g.IsHovered(rect, id);
g.KeepAliveID(id);
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed)
{
g.SetActiveID(id);
}
if (g.ActiveId == id && Mouse.Instance.LeftButtonReleased)
{
value = !value;
g.SetActiveID(0);
}
}
return(value);
}
public void NewFrame(GUIContext g)
{
// Handle user moving window (at the beginning of the frame to avoid input lag or sheering). Only valid for root windows.
if (this.MovedWindowMoveId != 0 && this.MovedWindowMoveId == g.ActiveId)
{
g.KeepAliveID(this.MovedWindowMoveId);
Debug.Assert(this.MovedWindow != null && this.MovedWindow.RootWindow != null);
Debug.Assert(this.MovedWindow.RootWindow.MoveID == this.MovedWindowMoveId);
if (Mouse.Instance.LeftButtonState == KeyState.Down)
{
if (!this.MovedWindow.Flags.HaveFlag(WindowFlags.NoMove))
{
this.MovedWindow.Position += Mouse.Instance.MouseDelta;
}
this.FocusWindow(this.MovedWindow);
}
else
{
g.SetActiveID(0);
this.MovedWindow = null;
this.MovedWindowMoveId = 0;
}
}
else
{
this.MovedWindow = null;
this.MovedWindowMoveId = 0;
}
// Find the window we are hovering. Child windows can extend beyond the limit of their parent so we need to derive HoveredRootWindow from HoveredWindow
this.HoveredWindow = this.MovedWindow ?? this.FindHoveredWindow(Mouse.Instance.Position, false);
if (this.HoveredWindow != null && (this.HoveredWindow.Flags.HaveFlag(WindowFlags.ChildWindow)))
{
this.HoveredRootWindow = this.HoveredWindow.RootWindow;
}
else
{
this.HoveredRootWindow = (this.MovedWindow != null) ? this.MovedWindow.RootWindow : this.FindHoveredWindow(Mouse.Instance.Position, true);
}
// Scale & Scrolling
if (this.HoveredWindow != null && Mouse.Instance.MouseWheel != 0.0 && !this.HoveredWindow.Collapsed)
{
Window window = this.HoveredWindow;
if (Keyboard.Instance.KeyDown(Key.LeftControl))
{
//Scale
//TODO
}
else
{
// Scroll
if (!(window.Flags.HaveFlag(WindowFlags.NoScrollWithMouse)))
{
var newScrollY = window.Scroll.Y - Math.Sign(Mouse.Instance.MouseWheel) * 20 /*scroll step*/;
float window_rounding = (float)window.WindowContainer.RuleSet.Get <double>(GUIStyleName.WindowRounding);
double resize_corner_size = Math.Max(window.WindowContainer.RuleSet.FontSize * 1.35, window_rounding + 1.0 + window.WindowContainer.RuleSet.FontSize * 0.2);
var contentSize = window.ContentRect.Size;
var vH = window.Rect.Height - window.TitleBarHeight - window.WindowContainer.RuleSet.BorderVertical - window.WindowContainer.RuleSet.PaddingVertical;
var cH = contentSize.Height;
if (cH > vH)
{
newScrollY = MathEx.Clamp(newScrollY, 0, cH - vH);
window.SetWindowScrollY(newScrollY);
}
}
}
}
// Mark all windows as not visible
for (int i = 0; i != this.Windows.Count; i++)
{
Window window = this.Windows[i];
window.WasActive = window.Active;
window.Active = false;
window.Accessed = false;
}
// No window should be open at the beginning of the frame.
// But in order to allow the user to call NewFrame() multiple times without calling Render(), we are doing an explicit clear.
this.WindowStack.Clear();
}
internal static bool DoPolygonButton(Rect rect, IReadOnlyList <Point> points, Rect textRect, string text)
{
Form form = Form.current;
GUIContext g = form.uiContext;
Window window = g.WindowManager.CurrentWindow;
DrawList d = window.DrawList;
int id = window.GetID(text);
var mousePos = Mouse.Instance.Position;
var clicked = false;
var hovered = MathEx.IsPointInPolygon(mousePos, points, new Vector(rect.X, rect.Y));
textRect.Offset(rect.X, rect.Y);
//control logic
g.KeepAliveID(id);
if (hovered)
{
g.SetHoverID(id);
if (Mouse.Instance.LeftButtonPressed)//start track
{
g.SetActiveID(id);
}
if (Mouse.Instance.LeftButtonReleased)//end track
{
clicked = true;
g.SetActiveID(GUIContext.None);
}
}
// ui representation
var state = GUI.Normal;
if (hovered)
{
state = GUI.Hover;
if (g.ActiveId == id && Mouse.Instance.LeftButtonState == KeyState.Down)
{
state = GUI.Active;
}
}
// ui painting
{
var style = GUISkin.Instance[GUIControlName.PolygonButton];
d.PathClear();
foreach (var point in points)
{
d.PathMoveTo(point + new Vector(rect.X, rect.Y));
}
d.PathFill(style.FillColor);
d.PathClear();
foreach (var point in points)
{
d.PathMoveTo(point + new Vector(rect.X, rect.Y));
}
d.PathStroke(style.LineColor, true, 2);
d.DrawBoxModel(textRect, text, style, state);
}
return(clicked);
}
