/// <summary>
/// Demonstrates the use of XLinearGradientBrush.
/// </summary>
public override void RenderPage(XGraphics gfx)
{
base.RenderPage(gfx);
XRect rect;
XLinearGradientBrush brush;
Graphics grfx = gfx.Internals.Graphics;
XLinearGradientBrush brush2 =
new XLinearGradientBrush(
new XPoint(100, 100),
new XPoint(300, 300),
XColors.DarkRed, XColors.Yellow);
//gfx.FillRectangle(brush, 0, 0, 600, 600);
//gfx.TranslateTransform(35, 200);
//gfx.RotateTransform(17);
rect = new XRect(20, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.DarkRed, XColors.Yellow, XLinearGradientMode.Horizontal);
gfx.DrawRectangle(XPens.Red, brush, rect);
rect = new XRect(140, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.DarkRed, XColors.Yellow, XLinearGradientMode.Vertical);
gfx.DrawRectangle(XPens.Red, brush, rect);
rect = new XRect(260, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.DarkRed, XColors.Yellow, XLinearGradientMode.ForwardDiagonal);
gfx.DrawRectangle(XPens.Red, brush, rect);
rect = new XRect(380, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.DarkRed, XColors.Yellow, XLinearGradientMode.BackwardDiagonal);
gfx.DrawRectangle(XPens.Red, brush, rect);
gfx.TranslateTransform(80, 250);
gfx.ScaleTransform(1.1);
gfx.RotateTransform(20);
rect = new XRect(20, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.Orange, XColors.DarkBlue, XLinearGradientMode.Horizontal);
gfx.DrawRectangle(XPens.Red, brush, rect);
rect = new XRect(140, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.Orange, XColors.DarkBlue, XLinearGradientMode.Vertical);
gfx.DrawRectangle(XPens.Red, brush, rect);
rect = new XRect(260, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.Orange, XColors.DarkBlue, XLinearGradientMode.ForwardDiagonal);
gfx.DrawRectangle(XPens.Red, brush, rect);
rect = new XRect(380, 50, 100, 200);
brush = new XLinearGradientBrush(rect,
XColors.Orange, XColors.DarkBlue, XLinearGradientMode.BackwardDiagonal);
gfx.DrawRectangle(XPens.Red, brush, rect);
}
/// <summary>
/// Setups the shading pattern from the specified brush.
/// </summary>
public void SetupFromBrush(XLinearGradientBrush brush, XMatrix matrix)
{
if (brush == null)
throw new ArgumentNullException("brush");
PdfShading shading = new PdfShading(this.document);
shading.SetupFromBrush(brush);
Elements[Keys.Shading] = shading;
Elements[Keys.Matrix] = new PdfLiteral("[" + PdfEncoders.ToString(matrix) + "]");
}
/// <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);
}
static void Main()
{
const string watermark = "PDFsharp";
const int emSize = 150;
// Get a fresh copy of the sample PDF file
const string filename = "Portable Document Format.pdf";
File.Copy(Path.Combine("../../../../../PDFs/", filename),
Path.Combine(Directory.GetCurrentDirectory(), filename), true);
// Create the font for drawing the watermark
XFont font = new XFont("Times New Roman", emSize, XFontStyle.BoldItalic);
// Open an existing document for editing and loop through its pages
PdfDocument document = PdfReader.Open(filename);
// Set version to PDF 1.4 (Acrobat 5) because we use transparency.
if (document.Version < 14)
document.Version = 14;
for (int idx = 0; idx < document.Pages.Count; idx++)
{
//if (idx == 1) break;
PdfPage page = document.Pages[idx];
switch (idx % 3)
{
case 0:
{
// Variation 1: Draw watermark as text string
// Get an XGraphics object for drawing beneath the existing content
XGraphics gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Prepend);
#if true_
// Fill background with linear gradient color
XRect rect = page.MediaBox.ToXRect();
XLinearGradientBrush gbrush = new XLinearGradientBrush(rect,
XColors.LightSalmon, XColors.WhiteSmoke, XLinearGradientMode.Vertical);
gfx.DrawRectangle(gbrush, rect);
#endif
// Get the size (in point) of the text
XSize size = gfx.MeasureString(watermark, font);
// Define a rotation transformation at the center of the page
gfx.TranslateTransform(page.Width / 2, page.Height / 2);
gfx.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI);
gfx.TranslateTransform(-page.Width / 2, -page.Height / 2);
// Create a string format
XStringFormat format = new XStringFormat();
format.Alignment = XStringAlignment.Near;
format.LineAlignment = XLineAlignment.Near;
// Create a dimmed red brush
XBrush brush = new XSolidBrush(XColor.FromArgb(128, 255, 0, 0));
// Draw the string
gfx.DrawString(watermark, font, brush,
new XPoint((page.Width - size.Width) / 2, (page.Height - size.Height) / 2),
format);
}
break;
case 1:
{
// Variation 2: Draw watermark as outlined graphical path
// Get an XGraphics object for drawing beneath the existing content
XGraphics gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Prepend);
// Get the size (in point) of the text
XSize size = gfx.MeasureString(watermark, font);
// Define a rotation transformation at the center of the page
gfx.TranslateTransform(page.Width / 2, page.Height / 2);
gfx.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI);
gfx.TranslateTransform(-page.Width / 2, -page.Height / 2);
// Create a graphical path
XGraphicsPath path = new XGraphicsPath();
// Add the text to the path
path.AddString(watermark, font.FontFamily, XFontStyle.BoldItalic, 150,
new XPoint((page.Width - size.Width) / 2, (page.Height - size.Height) / 2),
XStringFormats.Default);
// Create a dimmed red pen
XPen pen = new XPen(XColor.FromArgb(128, 255, 0, 0), 2);
// Stroke the outline of the path
gfx.DrawPath(pen, path);
}
break;
case 2:
{
// Variation 3: Draw watermark as transparent graphical path above text
// Get an XGraphics object for drawing above the existing content
XGraphics gfx = XGraphics.FromPdfPage(page, XGraphicsPdfPageOptions.Append);
// Get the size (in point) of the text
XSize size = gfx.MeasureString(watermark, font);
// Define a rotation transformation at the center of the page
gfx.TranslateTransform(page.Width / 2, page.Height / 2);
gfx.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI);
gfx.TranslateTransform(-page.Width / 2, -page.Height / 2);
// Create a graphical path
XGraphicsPath path = new XGraphicsPath();
// Add the text to the path
path.AddString(watermark, font.FontFamily, XFontStyle.BoldItalic, 150,
new XPoint((page.Width - size.Width) / 2, (page.Height - size.Height) / 2),
XStringFormats.Default);
// Create a dimmed red pen and brush
XPen pen = new XPen(XColor.FromArgb(50, 75, 0, 130), 3);
XBrush brush = new XSolidBrush(XColor.FromArgb(50, 106, 90, 205));
// Stroke the outline of the path
gfx.DrawPath(pen, brush, path);
}
break;
}
}
// Save the document...
document.Save(filename);
// ...and start a viewer
Process.Start(filename);
}
public XBrush Gradient(Rect rect, Color color1, Color color2)
{
var brush = new XLinearGradientBrush(rect.ToRectangleF(), color1, color2, XLinearGradientMode.ForwardDiagonal);
//m_items.Add(brush);
return brush;
}
/// <summary>
/// Renders the content of the page.
/// </summary>
public void Render(XGraphics gfx)
{
XRect rect;
XPen pen;
double x = 50, y = 100;
XFont fontH1 = new XFont("Times", 18, XFontStyle.Bold);
XFont font = new XFont("Times", 12);
XFont fontItalic = new XFont("Times", 12, XFontStyle.BoldItalic);
double ls = font.GetHeight(gfx);
// Draw some text
gfx.DrawString("Create PDF on the fly with PDFsharp",
fontH1, XBrushes.Black, x, x);
gfx.DrawString("With PDFsharp you can use the same code to draw graphic, " +
"text and images on different targets.", font, XBrushes.Black, x, y);
y += ls;
gfx.DrawString("The object used for drawing is the XGraphics object.",
font, XBrushes.Black, x, y);
y += 2 * ls;
// Draw an arc
pen = new XPen(XColors.Red, 4);
pen.DashStyle = XDashStyle.Dash;
gfx.DrawArc(pen, x + 20, y, 100, 60, 150, 120);
// Draw a star
XGraphicsState gs = gfx.Save();
gfx.TranslateTransform(x + 140, y + 30);
for (int idx = 0; idx < 360; idx += 10)
{
gfx.RotateTransform(10);
gfx.DrawLine(XPens.DarkGreen, 0, 0, 30, 0);
}
gfx.Restore(gs);
// Draw a rounded rectangle
rect = new XRect(x + 230, y, 100, 60);
pen = new XPen(XColors.DarkBlue, 2.5);
XColor color1 = XColor.FromKnownColor(KnownColor.DarkBlue);
XColor color2 = XColors.Red;
XLinearGradientBrush lbrush = new XLinearGradientBrush(rect, color1, color2,
XLinearGradientMode.Vertical);
gfx.DrawRoundedRectangle(pen, lbrush, rect, new XSize(10, 10));
// Draw a pie
pen = new XPen(XColors.DarkOrange, 1.5);
pen.DashStyle = XDashStyle.Dot;
gfx.DrawPie(pen, XBrushes.Blue, x + 360, y, 100, 60, -130, 135);
// Draw some more text
y += 60 + 2 * ls;
gfx.DrawString("With XGraphics you can draw on a PDF page as well as " +
"on any System.Drawing.Graphics object.", font, XBrushes.Black, x, y);
y += ls * 1.1;
gfx.DrawString("Use the same code to", font, XBrushes.Black, x, y);
x += 10;
y += ls * 1.1;
gfx.DrawString("• draw on a newly created PDF page", font, XBrushes.Black, x, y);
y += ls;
gfx.DrawString("• draw above or beneath of the content of an existing PDF page",
font, XBrushes.Black, x, y);
y += ls;
gfx.DrawString("• draw in a window", font, XBrushes.Black, x, y);
y += ls;
gfx.DrawString("• draw on a printer", font, XBrushes.Black, x, y);
y += ls;
gfx.DrawString("• draw in a bitmap image", font, XBrushes.Black, x, y);
x -= 10;
y += ls * 1.1;
gfx.DrawString("You can also import an existing PDF page and use it like " +
"an image, e.g. draw it on another PDF page.", font, XBrushes.Black, x, y);
y += ls * 1.1 * 2;
gfx.DrawString("Imported PDF pages are neither drawn nor printed; create a " +
"PDF file to see or print them!", fontItalic, XBrushes.Firebrick, x, y);
y += ls * 1.1;
gfx.DrawString("Below this text is a PDF form that will be visible when " +
"viewed or printed with a PDF viewer.", fontItalic, XBrushes.Firebrick, x, y);
y += ls * 1.1;
XGraphicsState state = gfx.Save();
XRect rcImage = new XRect(100, y, 100, 100 * Math.Sqrt(2));
gfx.DrawRectangle(XBrushes.Snow, rcImage);
gfx.DrawImage(XPdfForm.FromFile("../../../../../PDFs/SomeLayout.pdf"), rcImage);
gfx.Restore(state);
}
void RealizeLinearGradientBrush(LinearGradientBrush brush, XForm xform)
{
XMatrix matrix = this.currentTransform;
PdfShadingPattern pattern = new PdfShadingPattern(this.writer.Owner);
pattern.Elements[PdfShadingPattern.Keys.PatternType] = new PdfInteger(2); // shading pattern
// Setup shading
PdfShading shading = new PdfShading(this.writer.Owner);
PdfColorMode colorMode = PdfColorMode.Rgb; //this.document.Options.ColorMode;
PdfDictionary function = BuildShadingFunction(brush.GradientStops, colorMode);
function.Elements.SetString("/@", "This is the shading function of a LinearGradientBrush");
shading.Elements[PdfShading.Keys.Function] = function;
shading.Elements[PdfShading.Keys.ShadingType] = new PdfInteger(2); // Axial shading
//if (colorMode != PdfColorMode.Cmyk)
shading.Elements[PdfShading.Keys.ColorSpace] = new PdfName("/DeviceRGB");
//else
//shading.Elements[Keys.ColorSpace] = new PdfName("/DeviceCMYK");
//double x1 = 0, y1 = 0, x2 = 0, y2 = 0;
double x1 = brush.StartPoint.X;
double y1 = brush.StartPoint.Y;
double x2 = brush.EndPoint.X;
double y2 = brush.EndPoint.Y;
shading.Elements[PdfShading.Keys.Coords] = new PdfLiteral("[{0:0.###} {1:0.###} {2:0.###} {3:0.###}]", x1, y1, x2, y2);
// old: Elements[Keys.Background] = new PdfRawItem("[0 1 1]");
// old: Elements[Keys.Domain] =
shading.Elements[PdfShading.Keys.Extend] = new PdfLiteral("[true true]");
// Setup pattern
pattern.Elements[PdfShadingPattern.Keys.Shading] = shading;
pattern.Elements[PdfShadingPattern.Keys.Matrix] = PdfLiteral.FromMatrix(matrix); // new PdfLiteral("[" + PdfEncoders.ToString(matrix) + "]");
string name = this.writer.Resources.AddPattern(pattern);
this.writer.WriteLiteral("/Pattern cs\n", name);
this.writer.WriteLiteral("{0} scn\n", name);
double alpha = brush.Opacity * brush.GradientStops.GetAverageAlpha();
if (alpha < 1 && this.writer.renderMode == RenderMode.Default)
{
#if true
PdfExtGState extGState = this.writer.Owner.ExtGStateTable.GetExtGStateNonStroke(alpha);
string gs = this.writer.Resources.AddExtGState(extGState);
this.writer.WriteLiteral("{0} gs\n", gs);
#else
#if true
if (xform == null)
{
PdfExtGState extGState = this.writer.Owner.ExtGStateTable.GetExtGStateNonStroke(alpha);
string gs = this.writer.Resources.AddExtGState(extGState);
this.writer.WriteGraphicState(extGState);
}
else
{
//PdfFormXObject pdfForm = this.writer.Owner.FormTable.GetForm(form);
PdfFormXObject pdfForm = xform.pdfForm;
pdfForm.Elements.SetString("/@", "This is the Form XObject of the soft mask");
string formName = this.writer.Resources.AddForm(pdfForm);
PdfTransparencyGroupAttributes tgAttributes = new PdfTransparencyGroupAttributes(this.writer.Owner);
//this.writer.Owner.Internals.AddObject(tgAttributes);
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
// Set reference to transparency group attributes
pdfForm.Elements.SetObject(PdfFormXObject.Keys.Group, tgAttributes);
pdfForm.Elements[PdfFormXObject.Keys.Matrix] = new PdfLiteral("[1.001 0 0 1.001 0.001 0.001]");
PdfSoftMask softmask = new PdfSoftMask(this.writer.Owner);
this.writer.Owner.Internals.AddObject(softmask);
softmask.Elements.SetString("/@", "This is the soft mask");
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, pdfForm);
//pdfForm.Elements.SetName(PdfFormXObject.Keys.Type, "Group");
//pdfForm.Elements.SetName(PdfFormXObject.Keys.ss.Ss.Type, "Group");
PdfExtGState extGState = new PdfExtGState(this.writer.Owner);
this.writer.Owner.Internals.AddObject(extGState);
extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
this.writer.WriteGraphicState(extGState);
}
#else
XForm form = new XForm(this.writer.Owner, 220, 140);
XGraphics formGfx = XGraphics.FromForm(form);
// draw something
//XSolidBrush xbrush = new XSolidBrush(XColor.FromArgb(128, 128, 128));
XLinearGradientBrush xbrush = new XLinearGradientBrush(new XPoint(0, 0), new XPoint(220,0), XColors.White, XColors.Black);
formGfx.DrawRectangle(xbrush, -10000, -10000, 20000, 20000);
//formGfx.DrawString("Text, Graphics, Images, and Forms", new XFont("Verdana", 10, XFontStyle.Regular), XBrushes.Navy, 3, 0, XStringFormat.TopLeft);
formGfx.Dispose();
// Close form
form.Finish();
PdfFormXObject pdfForm = this.writer.Owner.FormTable.GetForm(form);
string formName = this.writer.Resources.AddForm(pdfForm);
//double x = 20, y = 20;
//double cx = 1;
//double cy = 1;
//this.writer.AppendFormat("q {2:0.###} 0 0 -{3:0.###} {0:0.###} {4:0.###} cm 100 Tz {5} Do Q\n",
// x, y, cx, cy, y + 0, formName);
//this.writer.AppendFormat("q {2:0.###} 0 0 -{3:0.###} {0:0.###} {4:0.###} cm 100 Tz {5} Do Q\n",
// x, y, cx, cy, y + 220/1.5, formName);
PdfTransparencyGroupAttributes tgAttributes = new PdfTransparencyGroupAttributes(this.writer.Owner);
this.writer.Owner.Internals.AddObject(tgAttributes);
tgAttributes.Elements.SetName(PdfTransparencyGroupAttributes.Keys.CS, "/DeviceRGB");
// Set reference to transparency group attributes
pdfForm.Elements.SetReference(PdfFormXObject.Keys.Group, tgAttributes);
PdfSoftMask softmask = new PdfSoftMask(this.writer.Owner);
this.writer.Owner.Internals.AddObject(softmask);
softmask.Elements.SetName(PdfSoftMask.Keys.S, "/Luminosity");
softmask.Elements.SetReference(PdfSoftMask.Keys.G, pdfForm);
//pdfForm.Elements.SetName(PdfFormXObject.Keys.Type, "Group");
//pdfForm.Elements.SetName(PdfFormXObject.Keys.ss.Ss.Type, "Group");
PdfExtGState extGState = new PdfExtGState(this.writer.Owner);
this.writer.Owner.Internals.AddObject(extGState);
extGState.Elements.SetReference(PdfExtGState.Keys.SMask, softmask);
this.writer.WriteGraphicState(extGState);
#endif
#endif
}
}
/// <summary>
/// Setups the shading from the specified brush.
/// </summary>
public void SetupFromBrush(XLinearGradientBrush brush)
{
if (brush == null)
throw new ArgumentNullException("brush");
PdfColorMode colorMode = this.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)
{
switch (brush.linearGradientMode)
{
case XLinearGradientMode.Horizontal:
x1 = brush.rect.x;
y1 = brush.rect.y;
x2 = brush.rect.x + brush.rect.width;
y2 = brush.rect.y;
break;
case XLinearGradientMode.Vertical:
x1 = brush.rect.x;
y1 = brush.rect.y;
x2 = brush.rect.x;
y2 = brush.rect.y + brush.rect.height;
break;
case XLinearGradientMode.ForwardDiagonal:
x1 = brush.rect.x;
y1 = brush.rect.y;
x2 = brush.rect.x + brush.rect.width;
y2 = brush.rect.y + brush.rect.height;
break;
case XLinearGradientMode.BackwardDiagonal:
x1 = brush.rect.x + brush.rect.width;
y1 = brush.rect.y;
x2 = brush.rect.x;
y2 = brush.rect.y + brush.rect.height;
break;
}
}
else
{
x1 = brush.point1.x;
y1 = brush.point1.y;
x2 = brush.point2.x;
y2 = brush.point2.y;
}
Elements[Keys.Coords] = new PdfLiteral("[{0:0.###} {1:0.###} {2:0.###} {3:0.###}]", 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);
}
/// <summary>
/// Draws all charts inside the ChartFrame.
/// </summary>
public void Draw(XGraphics gfx)
{
// Draw frame of ChartFrame. First shadow frame.
int dx = 5;
int dy = 5;
gfx.DrawRoundedRectangle(XBrushes.Gainsboro,
this.location.X + dx, this.location.Y + dy,
this.size.Width, this.size.Height, 20, 20);
XRect chartRect = new XRect(this.location.X, this.location.Y, this.size.Width, this.size.Height);
XLinearGradientBrush brush = new XLinearGradientBrush(chartRect, XColor.FromArgb(0xFFD0DEEF), XColors.White,
XLinearGradientMode.Vertical);
XPen penBorder = new XPen(XColors.SteelBlue, 2.5);
gfx.DrawRoundedRectangle(penBorder, brush,
this.location.X, this.location.Y, this.size.Width, this.size.Height,
15, 15);
XGraphicsState state = gfx.Save();
gfx.TranslateTransform(this.location.X, this.location.Y);
// Calculate rectangle for all charts. Y-Position will be moved for each chart.
int charts = this.chartList.Count;
uint dxChart = 20;
uint dyChart = 20;
uint dyBetweenCharts = 30;
XRect rect = new XRect(dxChart, dyChart,
this.size.Width - 2 * dxChart,
(this.size.Height - (charts - 1) * dyBetweenCharts - 2 * dyChart) / charts);
// draw each chart in list
foreach (Chart chart in this.chartList)
{
RendererParameters parms = new RendererParameters(gfx, rect);
parms.DrawingItem = chart;
ChartRenderer renderer = GetChartRenderer(chart, parms);
renderer.Init();
renderer.Format();
renderer.Draw();
rect.Y += rect.Height + dyBetweenCharts;
}
gfx.Restore(state);
// // Calculate rectangle for all charts. Y-Position will be moved for each chart.
// int charts = this.chartList.Count;
// uint dxChart = 0;
// uint dyChart = 0;
// uint dyBetweenCharts = 0;
// XRect rect = new XRect(dxChart, dyChart,
// this.size.Width - 2 * dxChart,
// (this.size.Height - (charts - 1) * dyBetweenCharts - 2 * dyChart) / charts);
//
// // draw each chart in list
// foreach (Chart chart in this.chartList)
// {
// RendererParameters parms = new RendererParameters(gfx, rect);
// parms.DrawingItem = chart;
//
// ChartRenderer renderer = GetChartRenderer(chart, parms);
// renderer.Init();
// renderer.Format();
// renderer.Draw();
//
// rect.Y += rect.Height + dyBetweenCharts;
// }
}
/// <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);
}
/// <summary>
/// Converts a GDI-Brush to a PDF-XBrush.
/// </summary>
/// <remarks>
/// Only Solid- and LinearGradientBrushes are supported.
/// </remarks>
/// <param name="brush">The GDI-Brush to convert.</param>
/// <returns>The converted PDF-XBrush.</returns>
private static XBrush BrushToXBrush(Brush brush)
{
XBrush xbrush;
SolidBrush solidBrush;
LinearGradientBrush lgBrush;
if((solidBrush = brush as SolidBrush) != null)
{
xbrush = new XSolidBrush(solidBrush.Color);
}
else if((lgBrush = brush as LinearGradientBrush) != null)
{
//There is no way to extract the angle of the gradient out of the GDI-brush.
//It only has a transformation matrix. To create a new gradient for pdfsharp,
//we use this matrix as follows:
//Create a "line" (start and end point) through the rectangle at the half of
//the heigth. The two points are p1 and p2. Transform these points with the
//matrix. The transformed points are located on the border of the rectangle.
PointF p1 = new PointF(lgBrush.Rectangle.Left, lgBrush.Rectangle.Top + lgBrush.Rectangle.Height/2.0f);
PointF p2 = new PointF(lgBrush.Rectangle.Right, lgBrush.Rectangle.Top + lgBrush.Rectangle.Height/2.0f);
PointF[] points = new[] {p1, p2};
lgBrush.Transform.TransformPoints(points);
p1 = points[0];
p2 = points[1];
//The direction is ok now. But the line might be to short. That is the case if
//the line is neither horizontal, nor vertical, nor diagonal. To fill the whole
//rectangle with the gradient, the start and end point of the line must be located
//outside the rectangle. To determine this gap we have to use some trigonometry.
//This will happily never the case in NClass. So we don't have to do this here.
xbrush = new XLinearGradientBrush(p1, p2, lgBrush.LinearColors[0], lgBrush.LinearColors[1]);
}
else
{
throw new NotImplementedException("Brush type not supported by PDFsharp.");
}
return xbrush;
}
public static void BeginBox(XGraphics gfx, int number, string title,
double borderWidth, double borderHeight,
XColor shadowColor, XColor backColor, XColor backColor2,
XPen borderPen)
{
const int dEllipse = 15;
XRect rect = new XRect(0, 20, 300, 200);
if (number % 2 == 0)
rect.X = 300 - 5;
rect.Y = 40 + ((number - 1) / 2) * (200 - 5);
rect.Inflate(-10, -10);
XRect rect2 = rect;
rect2.Offset(borderWidth, borderHeight);
gfx.DrawRoundedRectangle(new XSolidBrush(shadowColor), rect2, new XSize(dEllipse + 8, dEllipse + 8));
XLinearGradientBrush brush = new XLinearGradientBrush(rect, backColor, backColor2, XLinearGradientMode.Vertical);
gfx.DrawRoundedRectangle(borderPen, brush, rect, new XSize(dEllipse, dEllipse));
rect.Inflate(-5, -5);
XFont font = new XFont("Verdana", 12, XFontStyle.Regular);
gfx.DrawString(title, font, XBrushes.Navy, rect, XStringFormats.TopCenter);
rect.Inflate(-10, -5);
rect.Y += 20;
rect.Height -= 20;
state = gfx.Save();
gfx.TranslateTransform(rect.X, rect.Y);
}
