public void RealizeBrush(XBrush brush, PdfColorMode colorMode, XGraphicsPdfRendererOptions options, double fontEmSize)
{
// Rendering mode 2 is used for bold simulation.
// Reference: TABLE 5.3 Text rendering modes / Page 402
XSolidBrush solidBrush = brush as XSolidBrush;
if (solidBrush != null)
{
XColor color = solidBrush.Color;
bool overPrint = solidBrush.Overprint;
if (options.RenderMode == XGraphicsPdfRenderMode.Text_Render_Mode_Fill)
{
RealizeFillColor(color, overPrint, colorMode);
}
else if (options.RenderMode == XGraphicsPdfRenderMode.Text_Render_Mode_Fill_Stroke)
{
// Come here in case of bold simulation.
RealizeFillColor(color, false, colorMode);
//color = XColors.Green;
RealizePen(new XPen(color, fontEmSize * Const.BoldEmphasis), colorMode);
}
else
{
throw new InvalidOperationException("Only rendering modes 0 and 2 are currently supported.");
}
}
else
{
if (options.RenderMode != 0)
{
throw new InvalidOperationException("Rendering modes other than 0 can only be used with solid color brushes.");
}
XLinearGradientBrush gradientBrush = brush as XLinearGradientBrush;
if (gradientBrush != null)
{
Debug.Assert(UnrealizedCtm.IsIdentity, "Must realize ctm first.");
XMatrix matrix = _renderer.DefaultViewMatrix;
matrix.Prepend(EffectiveCtm);
PdfShadingPattern pattern = new PdfShadingPattern(_renderer.Owner);
pattern.SetupFromBrush(gradientBrush, matrix, _renderer);
string name = _renderer.Resources.AddPattern(pattern);
_renderer.AppendFormatString("/Pattern cs\n", name);
_renderer.AppendFormatString("{0} scn\n", name);
// Invalidate fill color.
_realizedFillColor = XColor.Empty;
}
}
}
double _realizedCharSpace; // Reference: TABLE 5.2 Text state operators / Page 398
public void RealizeFont(XFont font, XBrush brush, XGraphicsPdfRendererOptions options = null)
{
const string format = Config.SignificantFigures3;
// So far rendering mode 0 (fill text) and 2 (fill, then stroke text) only.
RealizeBrush(brush, _renderer._colorMode, options, font.Size); // _renderer.page.document.Options.ColorMode);
// Realize rendering mode.
if (_realizedRenderingMode != options.RenderMode || options.IncludeRenderModeForObject)
{
_renderer.AppendFormatInt("{0} Tr\n", Convert.ToInt32(options.RenderMode));
_realizedRenderingMode = options.RenderMode;
}
// Realize character spacing.
if (_realizedRenderingMode == XGraphicsPdfRenderMode.Text_Render_Mode_Fill)
{
if (_realizedCharSpace != 0)
{
_renderer.Append("0 Tc\n");
_realizedCharSpace = 0;
}
}
else // _realizedRenderingMode is 2.
{
double charSpace = font.Size * Const.BoldEmphasis;
if (_realizedCharSpace != charSpace)
{
_renderer.AppendFormatDouble("{0:" + format + "} Tc\n", charSpace);
_realizedCharSpace = charSpace;
}
}
_realizedFont = null;
string fontName = _renderer.GetFontName(font, out _realizedFont);
if (fontName != _realizedFontName || _realizedFontSize != font.Size)
{
if (_renderer.Gfx.PageDirection == XPageDirection.Downwards)
{
_renderer.AppendFormatFont("{0} {1:" + format + "} Tf\n", fontName, font.Size);
}
else
{
_renderer.AppendFormatFont("{0} {1:" + format + "} Tf\n", fontName, font.Size);
}
_realizedFontName = fontName;
_realizedFontSize = font.Size;
}
}
