internal void SetupFromBrush(XRadialGradientBrush brush, XGraphicsPdfRenderer renderer)
{
if (brush == null)
{
throw new ArgumentNullException("brush");
}
PdfColorMode colorMode = _document.Options.ColorMode;
XColor color1 = ColorSpaceHelper.EnsureColorMode(colorMode, brush._color1);
XColor color2 = ColorSpaceHelper.EnsureColorMode(colorMode, brush._color2);
PdfDictionary function = new PdfDictionary();
Elements[Keys.ShadingType] = new PdfInteger(3);
if (colorMode != PdfColorMode.Cmyk)
{
Elements[Keys.ColorSpace] = new PdfName("/DeviceRGB");
}
else
{
Elements[Keys.ColorSpace] = new PdfName("/DeviceCMYK");
}
XPoint p1 = renderer.WorldToView(brush._center1);
XPoint p2 = renderer.WorldToView(brush._center2);
var rv1 = renderer.WorldToView(new XPoint(brush._r1 + brush._center1.X, brush._center1.Y));
var rv2 = renderer.WorldToView(new XPoint(brush._r2 + brush._center2.X, brush._center2.Y));
var dx1 = rv1.X - p1.X;
var dy1 = rv1.Y - p1.Y;
var dx2 = rv2.X - p2.X;
var dy2 = rv2.Y - p2.Y;
var r1 = Math.Sqrt(dx1 * dx1 + dy1 * dy1);
var r2 = Math.Sqrt(dx2 * dx2 + dy2 * dy2);
const string format = Config.SignificantFigures3;
Elements[Keys.Coords] = new PdfLiteral("[{0:" + format + "} {1:" + format + "} {2:" + format + "} {3:" + format + "} {4:" + format + "} {5:" + format + "}]", p1.X, p1.Y, r1, p2.X, p2.Y, r2);
//Elements[Keys.Background] = new PdfRawItem("[0 1 1]");
//Elements[Keys.Domain] =
Elements[Keys.Function] = function;
//Elements[Keys.Extend] = new PdfRawItem("[true true]");
string clr1 = "[" + PdfEncoders.ToString(color1, colorMode, true) + "]";
string clr2 = "[" + PdfEncoders.ToString(color2, colorMode, true) + "]";
function.Elements["/FunctionType"] = new PdfInteger(2);
function.Elements["/C0"] = new PdfLiteral(clr1);
function.Elements["/C1"] = new PdfLiteral(clr2);
function.Elements["/Domain"] = new PdfLiteral("[0 1]");
function.Elements["/N"] = new PdfInteger(1);
}
/// <summary>
/// Setups the shading pattern from the specified brush.
/// </summary>
internal void SetupFromBrush(XLinearGradientBrush brush, XMatrix matrix, XGraphicsPdfRenderer renderer)
{
if (brush == null)
{
throw new ArgumentNullException("brush");
}
PdfShading shading = new PdfShading(_document);
shading.SetupFromBrush(brush, renderer);
Elements[Keys.Shading] = shading;
//Elements[Keys.Matrix] = new PdfLiteral("[" + PdfEncoders.ToString(matrix) + "]");
Elements.SetMatrix(Keys.Matrix, matrix);
}
internal void SetupFromBrush(XBaseGradientBrush brush, XGraphicsPdfRenderer renderer)
{
if (brush is XRadialGradientBrush radialBrush)
{
SetupFromBrush(radialBrush, renderer);
}
else if (brush is XLinearGradientBrush linearBrush)
{
SetupFromBrush(linearBrush, renderer);
}
else
{
throw new ArgumentException("Unsupoorted XGradientBrush: " + brush);
}
}
/// <summary>
/// Setups the shading from the specified brush.
/// </summary>
internal void SetupFromBrush(XLinearGradientBrush brush, XGraphicsPdfRenderer renderer)
{
if (brush == null)
{
throw new ArgumentNullException("brush");
}
PdfColorMode colorMode = _document.Options.ColorMode;
XColor color1 = ColorSpaceHelper.EnsureColorMode(colorMode, brush._color1);
XColor color2 = ColorSpaceHelper.EnsureColorMode(colorMode, brush._color2);
PdfDictionary function = new PdfDictionary();
Elements[Keys.ShadingType] = new PdfInteger(2);
if (colorMode != PdfColorMode.Cmyk)
{
Elements[Keys.ColorSpace] = new PdfName("/DeviceRGB");
}
else
{
Elements[Keys.ColorSpace] = new PdfName("/DeviceCMYK");
}
double x1 = 0, y1 = 0, x2 = 0, y2 = 0;
if (brush._useRect)
{
XPoint pt1 = renderer.WorldToView(brush._rect.TopLeft);
XPoint pt2 = renderer.WorldToView(brush._rect.BottomRight);
switch (brush._linearGradientMode)
{
case XLinearGradientMode.Horizontal:
x1 = pt1.X;
y1 = pt1.Y;
x2 = pt2.X;
y2 = pt1.Y;
break;
case XLinearGradientMode.Vertical:
x1 = pt1.X;
y1 = pt1.Y;
x2 = pt1.X;
y2 = pt2.Y;
break;
case XLinearGradientMode.ForwardDiagonal:
x1 = pt1.X;
y1 = pt1.Y;
x2 = pt2.X;
y2 = pt2.Y;
break;
case XLinearGradientMode.BackwardDiagonal:
x1 = pt2.X;
y1 = pt1.Y;
x2 = pt1.X;
y2 = pt2.Y;
break;
}
}
else
{
XPoint pt1 = renderer.WorldToView(brush._point1);
XPoint pt2 = renderer.WorldToView(brush._point2);
x1 = pt1.X;
y1 = pt1.Y;
x2 = pt2.X;
y2 = pt2.Y;
}
const string format = Config.SignificantFigures3;
Elements[Keys.Coords] = new PdfLiteral("[{0:" + format + "} {1:" + format + "} {2:" + format + "} {3:" + format + "}]", x1, y1, x2, y2);
//Elements[Keys.Background] = new PdfRawItem("[0 1 1]");
//Elements[Keys.Domain] =
Elements[Keys.Function] = function;
//Elements[Keys.Extend] = new PdfRawItem("[true true]");
string clr1 = "[" + PdfEncoders.ToString(color1, colorMode) + "]";
string clr2 = "[" + PdfEncoders.ToString(color2, colorMode) + "]";
function.Elements["/FunctionType"] = new PdfInteger(2);
function.Elements["/C0"] = new PdfLiteral(clr1);
function.Elements["/C1"] = new PdfLiteral(clr2);
function.Elements["/Domain"] = new PdfLiteral("[0 1]");
function.Elements["/N"] = new PdfInteger(1);
}
public PdfGraphicsState(XGraphicsPdfRenderer renderer)
{
_renderer = renderer;
}
