internal static void RenderHueRect(LGuiRect Rect)
{
var Width = (int)Rect.Width;
var Height = (int)Rect.Height;
var Vertices = new LGuiVec2[Width * Height];
var Colors = new LGuiColor[Width * Height];
var Indices = new int[Width * Height * 2];
var Index = 0;
for (var Y = 0; Y < Height; ++Y)
{
for (var X = 0; X < Width; ++X)
{
Colors[Index] = LGuiColor.Hsv2Rgb(new LGuiColor(X / (float)(Width - 1), 1, 1));
Vertices[Index] = new LGuiVec2(X, Y);
Indices[Index * 2 + 0] = Index;
Indices[Index * 2 + 1] = Index;
Index++;
}
}
LGuiGraphics.DrawPrimitive(Rect, Vertices, Colors, Indices);
}
internal static bool OnProcess(string Title, LGuiRect Rect, ref LGuiColor Color)
{
LGuiFrame.Begin(Title, Rect);
var ID = LGuiHash.CalculateID(Title);
LGuiContext.SetPreviousControlID(ID);
if (!LGuiMisc.CheckVisible(ref Rect))
{
return(false);
}
var Hsv = LGuiContextCache.GetColorPickerHsv(Title);
var FrameSpacing = LGuiStyle.GetFrameChildSpacing();
var SpacingY = LGuiStyle.GetValue(LGuiStyleValueIndex.ControlSpacingY);
var SliderSize = LGuiStyle.GetValue(LGuiStyleValueIndex.SliderSize);
var ColorRect = new LGuiRect(Rect.Pos + FrameSpacing, new LGuiVec2(Rect.Width - FrameSpacing.X * 2.0f, Rect.Height - (SliderSize + SpacingY) * 4.0f - SpacingY * 3.0f - 20));
RenderColorRect(ColorRect, Hsv.R);
RenderColorCross(ColorRect, Hsv.G, Hsv.B);
var IDColor = LGuiHash.CalculateID($"{Title}_ColorSelector");
LGuiMisc.CheckAndSetContextID(ref ColorRect, IDColor);
var HsvValueChanged = false;
if (LGuiContext.ActiveID == IDColor)
{
var X = LGuiMisc.Lerp(0.0f, 1.0f, (LGuiContext.IO.MousePos.X - ColorRect.X) / ColorRect.Width);
var Y = LGuiMisc.Lerp(0.0f, 1.0f, (ColorRect.Height - (LGuiContext.IO.MousePos.Y - ColorRect.Y)) / ColorRect.Height);
if (X != Hsv.G || Y != Hsv.B)
{
HsvValueChanged = true;
Hsv.G = X;
Hsv.B = Y;
}
}
var HueRect = new LGuiRect(Rect.X + FrameSpacing.X, ColorRect.Bottom + FrameSpacing.Y, ColorRect.Width, 20);
RenderHueRect(HueRect);
RenderHueArrow(HueRect, Hsv.R);
var IDHue = LGuiHash.CalculateID($"{Title}_HueSelector");
LGuiMisc.CheckAndSetContextID(ref HueRect, IDHue);
if (LGuiContext.ActiveID == IDHue)
{
var Hue = LGuiMisc.Lerp(0.0f, 1.0f, (LGuiContext.IO.MousePos.X - HueRect.X) / HueRect.Width);
if (Hue != Hsv.R)
{
HsvValueChanged = true;
Hsv.R = Hue;
}
}
HsvValueChanged |= HandleHsvSlider(Title, ref Hsv, new LGuiVec2(HueRect.X, HueRect.Bottom + SpacingY), HueRect.Width / 2.0f);
if (HsvValueChanged)
{
Color = LGuiColor.Hsv2Rgb(Hsv);
LGuiContextCache.SetColorPickerHsv(Title, Hsv);
}
var RgbValueChanged = false;
if (HandleRgbSlider(Title, ref Color, new LGuiVec2(HueRect.X + HueRect.Width / 2.0f + 2.5f, HueRect.Bottom + SpacingY), HueRect.Width / 2.0f))
{
RgbValueChanged = true;
LGuiContextCache.SetColorPickerHsv(Title, LGuiColor.Rgb2Hsv(Color));
}
var CurrentTitleWidth = LGuiContext.Font.FontWidth * 8.5f;
LGuiGraphics.DrawText("Current:", new LGuiVec2(HueRect.X, HueRect.Bottom + SpacingY + (SliderSize + SpacingY) * 3.0f), LGuiStyleColorIndex.Text);
LGuiGraphics.DrawRect(new LGuiRect(HueRect.X + CurrentTitleWidth, HueRect.Bottom + SpacingY + (SliderSize + SpacingY) * 3.0f, HueRect.Width / 2.0f - CurrentTitleWidth, SliderSize), Color, true, false);
LGuiFrame.End();
return(HsvValueChanged | RgbValueChanged);
}