public static Color ColorFromHSV(double hue, double saturation, double value)
{
int hi = Convert.ToInt32(Math.Floor(hue / 60)) % 6;
double f = hue / 60 - Math.Floor(hue / 60);
value = value * 255;
byte v = Convert.ToByte(value);
byte p = Convert.ToByte(value * (1 - saturation));
byte q = Convert.ToByte(value * (1 - f * saturation));
byte t = Convert.ToByte(value * (1 - (1 - f) * saturation));
if (hi == 0)
{
return(CairoEx.ColorArgb(255, v, t, p));
}
if (hi == 1)
{
return(CairoEx.ColorArgb(255, q, v, p));
}
if (hi == 2)
{
return(CairoEx.ColorArgb(255, p, v, t));
}
if (hi == 3)
{
return(CairoEx.ColorArgb(255, p, q, v));
}
if (hi == 4)
{
return(CairoEx.ColorArgb(255, t, p, v));
}
return(CairoEx.ColorArgb(255, v, p, q));
}
public void ShowResult()
{
var surface = CairoEx.BuildSurface((int)rect.Width, (int)rect.Height, CairoEx.ColorMetal, Cairo.Format.Rgb24);
var context = new Cairo.Context(surface);
Draw(context, isClipped);
string outputPath = "D:\\LayoutTest";
if (!System.IO.Directory.Exists(outputPath))
{
System.IO.Directory.CreateDirectory(outputPath);
}
string filePath = outputPath + "\\" + DateTime.UtcNow.ToString("yyyy-MM-dd_HH-mm-ss-fff_") + surface.GetHashCode() + ".png";
surface.WriteToPng(filePath);
surface.Dispose();
context.Dispose();
Process.Start("rundll32.exe", @"""C:\Program Files\Windows Photo Viewer\PhotoViewer.dll"",ImageView_Fullscreen " + filePath);
}
internal void DrawContent(Rect rect, string text, GUIStyle style)
{
var surface = CairoEx.BuildSurface((int)rect.Width, (int)rect.Height, CairoEx.ColorMetal, Format.Rgb24);
var context = new Context(surface);
context.DrawBoxModel(rect, text, style);
string outputPath = "D:\\ContentTest";
if (!System.IO.Directory.Exists(outputPath))
{
System.IO.Directory.CreateDirectory(outputPath);
}
string filePath = outputPath + "\\" + DateTime.UtcNow.ToString("yyyy-MM-dd_HH-mm-ss-fff_") + surface.GetHashCode() + ".png";
surface.WriteToPng(filePath);
surface.Dispose();
context.Dispose();
Process.Start("rundll32.exe", @"""C:\Program Files\Windows Photo Viewer\PhotoViewer.dll"",ImageView_Fullscreen " + filePath);
}
public static void ShowResult(this LayoutGroup group, [System.Runtime.CompilerServices.CallerMemberName] string memberName = null)
{
var rect = group.Rect;
var surface = CairoEx.BuildSurface((int)rect.Width, (int)rect.Height, CairoEx.ColorMetal, Format.Rgb24);
var context = new Cairo.Context(surface);
Draw(group, context, needClip: true);
string outputPath = "D:\\LayoutTest";
if (!System.IO.Directory.Exists(outputPath))
{
System.IO.Directory.CreateDirectory(outputPath);
}
string filePath = outputPath + "\\" + DateTime.UtcNow.ToString("yyyy-MM-dd_HH-mm-ss-fff_") + surface.GetHashCode() + memberName + ".png";
surface.WriteToPng(filePath);
surface.Dispose();
context.Dispose();
Process.Start("rundll32.exe", @"""C:\Program Files\Windows Photo Viewer\PhotoViewer.dll"",ImageView_Fullscreen " + filePath);
}
/// <summary>
/// Draw a box model
/// </summary>
/// <param name="g">the Cairo context</param>
/// <param name="rect">the rect (of the border-box) in which to draw this box model </param>
/// <param name="content">content of the box mode</param>
/// <param name="style">style of the box model</param>
internal static void DrawBoxModel(this Cairo.Context g, Rect rect, string text, GUIStyle style)
{
//Widths of border
var bt = style.BorderTop;
var br = style.BorderRight;
var bb = style.BorderBottom;
var bl = style.BorderLeft;
//Widths of padding
var pt = style.PaddingTop;
var pr = style.PaddingRight;
var pb = style.PaddingBottom;
var pl = style.PaddingLeft;
//4 corner of the border-box
var btl = new Point(rect.Left, rect.Top);
var btr = new Point(rect.Right, rect.Top);
var bbr = new Point(rect.Right, rect.Bottom);
var bbl = new Point(rect.Left, rect.Bottom);
var borderBoxRect = new Rect(btl, bbr);
//4 corner of the padding-box
var ptl = new Point(btl.X + bl, btl.Y + bt);
var ptr = new Point(btr.X - br, btr.Y + bt);
var pbr = new Point(bbr.X - br, bbr.Y - bb);
var pbl = new Point(bbl.X + bl, bbl.Y - bb);
var paddingBoxRect = new Rect(ptl, pbr);
//4 corner of the content-box
var ctl = new Point(ptl.X + pl, ptl.Y + pt);
var ctr = new Point(ptr.X - pr, ptr.Y + pr);
var cbr = new Point(pbr.X - pr, pbr.Y - pb);
var cbl = new Point(pbl.X + pl, pbl.Y - pb);
var contentBoxRect = new Rect(ctl, cbr);
/*
* Render from inner to outer: Content, Padding, Border, Margin, Outline
*/
//Content
//Content-box background(draw as a filled rectangle now)
g.FillRectangle(rect, style.BackgroundColor);
//Content-box
if (text != null)
{
g.DrawText(contentBoxRect, text, style.FontSize, style.FontColor);
}
//Border
// Top
if (bt != 0)
{
g.FillPolygon(new[] { ptl, btl, btr, ptr }, style.BorderTopColor);
}
// Right
if (br != 0)
{
g.FillPolygon(new[] { ptr, btr, bbr, pbr }, style.BorderRightColor);
}
// Bottom
if (bb != 0)
{
g.FillPolygon(new[] { pbr, bbr, bbl, pbl }, style.BorderBottomColor);
}
// Left
if (bl != 0)
{
g.FillPolygon(new[] { pbl, bbl, btl, ptl }, style.BorderLeftColor);
}
//Outline
if (style.OutlineWidth != 0)
{
g.Rectangle(borderBoxRect.TopLeft.ToPointD(), borderBoxRect.Width, borderBoxRect.Height);
g.LineWidth = style.OutlineWidth;
g.SetSourceColor(style.OutlineColor);
g.Stroke();
}
#if DrawPaddingBox
g.Rectangle(paddingBoxRect.TopLeft.ToPointD(), paddingBoxRect.Width, paddingBoxRect.Height);
g.LineWidth = 1;
g.SetSourceColor(CairoEx.ColorRgb(0, 100, 100));
g.Stroke();
#endif
#if DrawContentBox
g.Rectangle(contentBoxRect.TopLeft.ToPointD(), contentBoxRect.Width, contentBoxRect.Height);
g.LineWidth = 1;
g.SetSourceColor(CairoEx.ColorRgb(100, 0, 100));
g.Stroke();
#endif
}