/// <summary>Get the rectangle representation of the intersection between this rectangle and the passed rectangle
/// </summary>
/// <param name="rect">the rectangle to find the intersection with</param>
/// <returns>
/// the intersection rectangle if the passed rectangles intersects with this rectangle,
/// a rectangle representing a line if the intersection is along an edge or
/// a rectangle representing a point if the intersection is a single point,
/// null otherwise
/// </returns>
public virtual iText.Kernel.Geom.Rectangle GetIntersection(iText.Kernel.Geom.Rectangle rect)
{
iText.Kernel.Geom.Rectangle result = null;
//Calculate possible lower-left corner and upper-right corner
float llx = Math.Max(x, rect.x);
float lly = Math.Max(y, rect.y);
float urx = Math.Min(GetRight(), rect.GetRight());
float ury = Math.Min(GetTop(), rect.GetTop());
//If width or height is non-negative, there is overlap and we can construct the intersection rectangle
float width = urx - llx;
float height = ury - lly;
if (JavaUtil.FloatCompare(width, 0) >= 0 && JavaUtil.FloatCompare(height, 0) >= 0)
{
if (JavaUtil.FloatCompare(width, 0) < 0)
{
width = 0;
}
if (JavaUtil.FloatCompare(height, 0) < 0)
{
height = 0;
}
result = new iText.Kernel.Geom.Rectangle(llx, lly, width, height);
}
return(result);
}
public void ManipulatePdf(
string pdfSrc,
string pdfDest,
string text,
string imageName,
float fontSize,
string fontName)
{
MemoryStream pdfStream = new(File.ReadAllBytes(pdfSrc));
PdfDocument pdfDoc = new(new PdfReader(pdfStream), new PdfWriter(pdfDest));
Document doc = new(pdfDoc);
PdfFont font = PdfFontFactory.CreateFont(FontProgramFactory.CreateFont(fontName));
Paragraph paragraph = new Paragraph(text).SetFont(font).SetFontSize(fontSize).SetFontColor(iText.Kernel.Colors.ColorConstants.CYAN);
//DrawText(text, new Font(StandardFonts.HELVETICA, 14.0f), System.Drawing.Color.Aqua, 500, IMG + imageName);
//ImageData img = ImageDataFactory.Create(IMG + imageName);
//float w = img.GetWidth();
//float h = img.GetHeight();
float radio = 20.2f;
PdfExtGState gs1 = new PdfExtGState().SetFillOpacity(0.3f);
// Implement transformation matrix usage in order to scale image
for (int i = 1; i <= pdfDoc.GetNumberOfPages(); i++)
{
PdfPage pdfPage = pdfDoc.GetPage(i);
Rectangle pageSize = pdfPage.GetPageSize();
float x = (pageSize.GetLeft() + pageSize.GetRight()) / 2;
float y = (pageSize.GetTop() + pageSize.GetBottom()) / 2;
PdfCanvas over = new PdfCanvas(pdfPage);
over.SaveState();
over.SetExtGState(gs1);
//if (i % 2 == 1)
//{
// doc.ShowTextAligned(paragraph, x, y-200, i, TextAlignment.CENTER, VerticalAlignment.TOP, 10);
// doc.ShowTextAligned(paragraph, x, y, i, TextAlignment.CENTER, VerticalAlignment.TOP, 10);
// }
// else
//{
doc.ShowTextAligned(paragraph, x - 200, y + 160, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x - 100, y + 80, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x, y, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x + 100, y - 80, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x + 200, y - 160, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 80), true);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 60), true);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 40), true);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 2), true);
//}
over.RestoreState();
}
doc.Close();
}
public Task <byte[]> ManipulatePdf(
StampSimple fileSource)
{
using MemoryStream pdfDest = new();
using MemoryStream pdfStream = new(fileSource.ImageSource);
var pdfDoc = new PdfDocument(new PdfReader(pdfStream), new PdfWriter(pdfDest));
var doc = new Document(pdfDoc);
foreach (TextProperties text in fileSource.Texts)
{
var font = PdfFontFactory.CreateFont(FontProgramFactory.CreateFont(text.FontName));
iText.Kernel.Colors.Color fontColor = iText.Kernel.Colors.ColorConstants.CYAN;
switch (text.Color)
{
case "WHITE": fontColor = iText.Kernel.Colors.ColorConstants.WHITE; break;
case "BLACK": fontColor = iText.Kernel.Colors.ColorConstants.BLACK; break;
case "BLUE": fontColor = iText.Kernel.Colors.ColorConstants.BLUE; break;
case "DARKGRAY": fontColor = iText.Kernel.Colors.ColorConstants.DARK_GRAY; break;
case "GRAY": fontColor = iText.Kernel.Colors.ColorConstants.GRAY; break;
case "GREEN": fontColor = iText.Kernel.Colors.ColorConstants.GREEN; break;
case "MAGENTA": fontColor = iText.Kernel.Colors.ColorConstants.MAGENTA; break;
case "ORANGE": fontColor = iText.Kernel.Colors.ColorConstants.ORANGE; break;
case "PINK": fontColor = iText.Kernel.Colors.ColorConstants.PINK; break;
case "RED": fontColor = iText.Kernel.Colors.ColorConstants.RED; break;
case "YELLOW": fontColor = iText.Kernel.Colors.ColorConstants.YELLOW; break;
}
var paragraph = new Paragraph(text.Text).SetFont(font).SetFontSize(text.FontSize).SetFontColor(fontColor);
var gs1 = new PdfExtGState().SetFillOpacity(text.Opacity);
for (int i = 1; i <= pdfDoc.GetNumberOfPages(); i++)
{
PdfPage pdfPage = pdfDoc.GetPage(i);
Rectangle pageSize = pdfPage.GetPageSize();
float x = (pageSize.GetLeft() + pageSize.GetRight()) / 2;
float y = (pageSize.GetTop() + pageSize.GetBottom()) / 2;
var over = new PdfCanvas(pdfPage);
over.SaveState();
over.SetExtGState(gs1);
doc.ShowTextAligned(paragraph, text.PosX, text.PosY, i, TextAlignment.CENTER, VerticalAlignment.TOP, text.Radio);
over.RestoreState();
}
}
doc.Close();
return(Task.FromResult(pdfDest.ToArray()));
}
/// <summary>
/// Gets the rectangle as it looks on the rotated page
/// and returns the rectangle in coordinates relevant to the true page origin.
/// </summary>
/// <remarks>
/// Gets the rectangle as it looks on the rotated page
/// and returns the rectangle in coordinates relevant to the true page origin.
/// This rectangle can be used to add annotations, fields, and other objects
/// to the rotated page.
/// </remarks>
/// <param name="rect">the rectangle as it looks on the rotated page.</param>
/// <param name="page">the page on which one want to process the rectangle.</param>
/// <returns>the newly created rectangle with translated coordinates.</returns>
public static iText.Kernel.Geom.Rectangle GetRectangleOnRotatedPage(iText.Kernel.Geom.Rectangle rect, PdfPage
page)
{
iText.Kernel.Geom.Rectangle resultRect = rect;
int rotation = page.GetRotation();
if (0 != rotation)
{
iText.Kernel.Geom.Rectangle pageSize = page.GetPageSize();
switch ((rotation / 90) % 4)
{
case 1: {
// 90 degrees
resultRect = new iText.Kernel.Geom.Rectangle(pageSize.GetWidth() - resultRect.GetTop(), resultRect.GetLeft
(), resultRect.GetHeight(), resultRect.GetWidth());
break;
}
case 2: {
// 180 degrees
resultRect = new iText.Kernel.Geom.Rectangle(pageSize.GetWidth() - resultRect.GetRight(), pageSize.GetHeight
() - resultRect.GetTop(), resultRect.GetWidth(), resultRect.GetHeight());
break;
}
case 3: {
// 270 degrees
resultRect = new iText.Kernel.Geom.Rectangle(resultRect.GetLeft(), pageSize.GetHeight() - resultRect.GetRight
(), resultRect.GetHeight(), resultRect.GetWidth());
break;
}
case 4:
default: {
// 0 degrees
break;
}
}
}
return(resultRect);
}