internal static bool Begin(string Title)
{
var FullTitle = $"{LGuiContext.GetCurrentFrame().Title}/{Title}";
var ID = LGuiHash.CalculateID(FullTitle);
LGuiContext.SetPreviousControlID(ID);
var Rect = LGuiLayout.DoLayout(new LGuiVec2(LGuiStyle.GetValue(LGuiStyleValueIndex.LargeControlLength), LGuiStyle.GetValue(LGuiStyleValueIndex.HeaderSize)));
if (!LGuiMisc.CheckVisible(ref Rect))
{
return(false);
}
LGuiMisc.CheckAndSetContextID(ref Rect, ID);
var BgColorIndex = LGuiContext.ActiveID == ID ? LGuiStyleColorIndex.GroupActived :
LGuiContext.HoveredID == ID ? LGuiStyleColorIndex.GroupHovered : LGuiStyleColorIndex.Group;
LGuiGraphics.DrawRect(Rect, BgColorIndex, true);
LGuiGraphics.DrawRect(Rect, LGuiStyleColorIndex.Border, false);
LGuiGraphics.DrawText(Title, new LGuiVec2(Rect.X + LGuiStyle.GetValue(LGuiStyleValueIndex.GroupChildSpacing), Rect.Y), LGuiStyleColorIndex.Text);
var Expand = LGuiContextCache.GetGroupExpand(FullTitle);
if (Expand)
{
LGuiGraphics.DrawTriangle(
new LGuiVec2(Rect.X + 5, Rect.Y + 3),
new LGuiVec2(Rect.X + 15, Rect.Y + 3),
new LGuiVec2(Rect.X + 10, Rect.Bottom - 3),
LGuiStyle.GetColor(LGuiStyleColorIndex.Text),
true);
}
else
{
LGuiGraphics.DrawTriangle(
new LGuiVec2(Rect.X + 5, Rect.Y + 3),
new LGuiVec2(Rect.X + 15, Rect.CenterY),
new LGuiVec2(Rect.X + 5, Rect.Bottom - 3),
LGuiStyle.GetColor(LGuiStyleColorIndex.Text),
true);
}
if (LGuiMisc.CheckAndSetFocusID(ID))
{
Expand = !Expand;
LGuiContextCache.SetGroupExpand(FullTitle, Expand);
}
if (Expand)
{
LGuiContext.BeginGroup(FullTitle, Rect.X + LGuiStyle.GetValue(LGuiStyleValueIndex.GroupChildSpacing));
}
return(Expand);
}
internal static void RenderHueArrow(LGuiRect HueRect, float Hue)
{
var ArrowX = HueRect.X + HueRect.Width * Hue;
var ArrowY1 = HueRect.Y;
var ArrowY2 = HueRect.Bottom;
LGuiGraphics.DrawTriangle(
new LGuiVec2(ArrowX, ArrowY1 + 5),
new LGuiVec2(ArrowX - 5, ArrowY1),
new LGuiVec2(ArrowX + 5, ArrowY1),
LGuiColor.White, true);
LGuiGraphics.DrawTriangle(
new LGuiVec2(ArrowX, ArrowY2 - 5),
new LGuiVec2(ArrowX - 5, ArrowY2),
new LGuiVec2(ArrowX + 5, ArrowY2),
LGuiColor.White, true);
}
internal static bool OnProcess(string Title, ref int ItemIndex, string[] Items, LGuiRect Rect, float PopupHeight)
{
var ID = LGuiHash.CalculateID(Title);
LGuiContext.SetPreviousControlID(ID);
if (!LGuiMisc.CheckVisible(ref Rect))
{
return(false);
}
var TitleBgColorIndex = LGuiContext.ActiveID == ID ? LGuiStyleColorIndex.FrameActived :
LGuiContext.HoveredID == ID ? LGuiStyleColorIndex.FrameHovered : LGuiStyleColorIndex.Frame;
LGuiMisc.CheckAndSetContextID(ref Rect, ID);
LGuiGraphics.DrawRect(Rect, TitleBgColorIndex, true);
LGuiGraphics.DrawText(Items[ItemIndex], Rect.Pos + new LGuiVec2(LGuiStyle.GetValue(LGuiStyleValueIndex.ControlSpacingX), 0), LGuiStyleColorIndex.Text);
var GrabRect = new LGuiRect(Rect.Right - LGuiContext.Font.FontHeight, Rect.Y, LGuiContext.Font.FontHeight, LGuiContext.Font.FontHeight);
var GrabBgColorIndex = LGuiContext.ActiveID == ID ? LGuiStyleColorIndex.ButtonActived :
LGuiContext.HoveredID == ID ? LGuiStyleColorIndex.ButtonHovered : LGuiStyleColorIndex.Button;
LGuiGraphics.DrawRect(GrabRect, GrabBgColorIndex, true);
LGuiGraphics.DrawTriangle(
new LGuiVec2(GrabRect.Left + 4, GrabRect.Top + 4),
new LGuiVec2(GrabRect.Right - 4, GrabRect.Top + 4),
new LGuiVec2(GrabRect.CenterX, GrabRect.Bottom - 4),
LGuiStyle.GetColor(LGuiStyleColorIndex.Text), true);
LGuiGraphics.DrawRect(Rect, LGuiStyleColorIndex.Border, false);
var PopupID = $"{Title}_ItemPopup";
if (LGuiMisc.CheckAndSetFocusID(ID))
{
LGuiPopup.Open(PopupID);
}
var NewIndex = ItemIndex;
if (LGuiPopup.Begin(PopupID, new LGuiRect(Rect.X, Rect.Bottom + 1, Rect.Width, PopupHeight)))
{
var ItemWidth = Rect.Width - LGuiStyle.GetValue(LGuiStyleValueIndex.FrameChildSpacingX) * 2.0f - LGuiStyle.GetValue(LGuiStyleValueIndex.SliderSize);
for (var Index = 0; Index < Items.Length; ++Index)
{
if (LGuiSelectable.OnProcess(Items[Index], ItemIndex == Index, ItemWidth))
{
NewIndex = Index;
LGuiPopup.Close(PopupID);
}
}
LGuiPopup.End();
}
if (ItemIndex != NewIndex)
{
ItemIndex = NewIndex;
return(true);
}
return(false);
}
internal static bool BeginWindow(string Title, LGuiRect InitRect, LGuiWindowFlags Flags)
{
if (CurrentWindow_ != 0)
{
return(false);
}
var ID = LGuiHash.Calculate(Title);
if (!WindowList_.ContainsKey(ID))
{
WindowList_.Add(ID, new LGuiWindowContext(Title, ID, WindowList_.Count, InitRect,
(Flags & LGuiWindowFlags.NoMove) != LGuiWindowFlags.NoMove,
(Flags & LGuiWindowFlags.NoFocus) != LGuiWindowFlags.NoFocus));
FocusOrder++;
}
var Rect = WindowList_[ID].Rect;
if (!LGuiMisc.CheckVisible(ref Rect))
{
return(false);
}
CurrentWindow_ = ID;
if (FocusWindow_ == 0)
{
FocusWindow_ = CurrentWindow_;
WindowList_[FocusWindow_].Order = FocusOrder;
}
LGuiGraphics.SetTargetCommandList(WindowList_[ID].DrawList);
if ((Flags & LGuiWindowFlags.NoTitle) != LGuiWindowFlags.NoTitle)
{
var TitleRect = new LGuiRect(Rect.Pos, new LGuiVec2(Rect.Width, LGuiContext.Font.FontHeight));
var NoCollapse = ((Flags & LGuiWindowFlags.NoCollapse) == LGuiWindowFlags.NoCollapse);
var Expand = LGuiContextCache.GetWindowExpand(Title);
var TitleTextOffset = NoCollapse ? 5.0f : 20.0f;
if (Expand)
{
LGuiGraphics.DrawRect(Rect, LGuiStyleColorIndex.Frame, true);
}
LGuiGraphics.DrawRect(TitleRect, LGuiStyleColorIndex.HeaderActive, true);
LGuiGraphics.DrawText(Title, new LGuiVec2(TitleRect.X + TitleTextOffset, TitleRect.Y), LGuiStyleColorIndex.Text);
if (!NoCollapse)
{
if (Expand)
{
LGuiGraphics.DrawTriangle(
new LGuiVec2(TitleRect.X + 5, TitleRect.Top + 5),
new LGuiVec2(TitleRect.X + 15, TitleRect.Top + 5),
new LGuiVec2(TitleRect.X + 10, TitleRect.Bottom - 5),
LGuiStyle.GetColor(LGuiStyleColorIndex.Text), true);
}
else
{
LGuiGraphics.DrawTriangle(
new LGuiVec2(TitleRect.X + 5, TitleRect.Top + 5),
new LGuiVec2(TitleRect.X + 15, TitleRect.CenterY),
new LGuiVec2(TitleRect.X + 5, TitleRect.Bottom - 5),
LGuiStyle.GetColor(LGuiStyleColorIndex.Text), true);
}
var ArrowRect = new LGuiRect(TitleRect.X, TitleRect.Y, 20.0f, 20.0f);
LGuiMisc.CheckAndSetContextID(ref ArrowRect, ID);
if (LGuiMisc.CheckAndSetFocusID(ID))
{
Expand = !Expand;
LGuiContextCache.SetWindowExpand(Title, Expand);
}
if (!Expand)
{
HandleMouseMsg(ref TitleRect);
CurrentWindow_ = 0;
LGuiGraphics.SetTargetCommandList(null);
return(false);
}
}
LGuiGraphics.DrawRect(TitleRect, LGuiStyleColorIndex.Border, false);
var ContextRect = new LGuiRect(Rect.X, TitleRect.Bottom, Rect.Width, Rect.Height - TitleRect.Height);
LGuiFrame.Begin(Title, ContextRect, false);
}
else
{
LGuiGraphics.DrawRect(Rect, LGuiStyleColorIndex.Frame, true);
LGuiFrame.Begin(Title, Rect, false);
}
return(true);
}