I'm creating a PDF document consisting of text only, where all the text is the same point size and font family but each character could potentially be a different color. Everything seems to work fine using the code snippet below, but the default space between the lines is slightly greater than I consider ideal. Is there a way to control this? (FYI, type "ColoredText" in the code below merely contains a string and its color. Also, the reason I am treating the newline character separately is that for some reason it doesn't cause a newline if it's in a Chunk.)
Thanks,
Ray
List<byte[]> pdfFilesAsBytes = new List<byte[]>();
iTextSharp.text.Document document = new iTextSharp.text.Document();
MemoryStream memStream = new MemoryStream();
iTextSharp.text.pdf.PdfWriter.GetInstance(document, memStream);
document.SetPageSize(isLandscape ? iTextSharp.text.PageSize.LETTER.Rotate() : iTextSharp.text.PageSize.LETTER);
document.Open();
foreach (ColoredText coloredText in coloredTextList)
{
Font font = new Font(Font.FontFamily.COURIER, pointSize, Font.NORMAL, coloredText.Color);
if (coloredText.Text == "\n")
document.Add(new Paragraph("", font));
else
document.Add(new Chunk(coloredText.Text, font));
}
document.Close();
pdfFilesAsBytes.Add(memStream.ToArray());
According to the PDF specification, the distance between the baseline of two lines is called the leading. In iText, the default leading is 1.5 times the size of the font. For instance: the default font size is 12 pt, hence the default leading is 18.
You can change the leading of a Paragraph by using one of the other constructors. See for instance: public Paragraph(float leading, String string, Font font)
You can also change the leading using one of the methods that sets the leading:
paragraph.SetLeading(fixed, multiplied);
The first parameter is the fixed leading: if you want a leading of 15 no matter which font size is used, you can choose fixed = 15 and multiplied = 0.
The second parameter is a factor: for instance if you want the leading to be twice the font size, you can choose fixed = 0 and multiplied = 2. In this case, the leading for a paragraph with font size 12 will be 24, for a font size 10, it will be 20, and son on.
You can also combine fixed and multiplied leading.
private static Paragraph addSpace(int size = 1)
{
Font LineBreak = FontFactory.GetFont("Arial", size);
Paragraph paragraph = new Paragraph("\n\n", LineBreak);
return paragraph;
}
Related
how to let long text change to multiple lines when adding annotation to image
and make the length of each line are equal, like rectangle?
image temp:=getfrontimage()
temp.ShowImage()
imageDisplay disp = front.ImageGetImageDisplay(0)
getsize(temp,x,y)
le=x*2/3
to1=y*80/100
component text1 = NewTextAnnotation(le,to1,string1+","+string2+","+string3,100)
I tried to add 3 strings to an image, each string has more than 15 letters/characters, Total more than 50 letters.
If I put all 3 strings in one text annotation in on line, it is too long.
If I put them as 3 text annotations, as the each line does not have exactly same numbers of letters, it shows ugly.
Is there any could let the text as multiple line, and the background of texts in each line has the same length?
Or the 3 text annotations has the same length, I mean the background of the texts has the same length, when the letters in each text annotations are not same, for example, 1st text annotation with 16 letters, 2nd text annotation with 20 letters, 3rd text annotation with 14 letters, but their background of the text have the same length.
Thanks,
You can add line-breaks as with all strings by simply adding the line-break escape string \n.
Example script:
number sx = 512
number sy = 512
image img := RealImage("test",4,sx,sy)
img = icol
img.ShowImage()
imageDisplay disp = img.ImageGetImageDisplay(0)
number l = sx * 2/3
number t = sy * 80/100
String mLstr = "Some text line\nSome more text lines\nShort text"
number fontSize = 12
Component Line = disp.NewTextAnnotation(l,t,mLstr,fontSize)
Line.TextAnnotationSetAlignment(1) // 1=Left, 2=Center, 3=Right
Line.ComponentSetDrawingMode(1) // 1=with background, 2=without background
Line.ComponentSetBackgroundColor(0.5,0.0,0)
Line.ComponentSetForegroundColor(0,1,0)
disp.ComponentAddChildAtEnd(line)
A note: When creating the new component, there are two different variants of the NewTextAnnotation command:
Component NewTextAnnotation( Component ref_par_comp, Number left, Number top, String text, Number size )
Component NewTextAnnotation( Number left, Number top, String text, Number size )
The first one takes the addtional "parent" component. If you use that one, then the font-size will scale with the default display-size of the parent component on the screen, i.e. will not be different for differently sizes images.
To test: Just try the above script with sx and sy values. Then do the same without the disp. in the line-annotation creating line.
I need to add Space between two lines in iTextSharp pdfPCell
Chunk chunk = new Chunk("Received Rs(In Words) : " + " " + myDataTable.Tables[1].Rows[0]["Recieved"].ToString(), font8);
PdfPTable PdfPTable = new PdfPTable(1);
PdfPCell PdfPCell =new PdfPCell(new Phrase(Chunk ));
PdfPCell .Border = PdfCell.NO_BORDER;
PdfPTable .AddCell(PdfPCell );
Please take a look at the following screen shot:
Based on your code snippet, I assume that you want to separate "Received Rs (in Words):" from "Priceless", but it's not clear to me what you want to happen if there is more than one line, so I have written 3 examples:
Example 1:
table = new PdfPTable(2);
table.setHorizontalAlignment(Element.ALIGN_LEFT);
table.setWidthPercentage(60);
table.setSpacingAfter(20);
cell = new PdfPCell(new Phrase("Received Rs (in Words):"));
cell.setBorder(PdfPCell.LEFT | PdfPCell.TOP | PdfPCell.BOTTOM);
table.addCell(cell);
cell = new PdfPCell(new Phrase("Priceless"));
cell.setHorizontalAlignment(Element.ALIGN_RIGHT);
cell.setBorder(PdfPCell.RIGHT | PdfPCell.TOP | PdfPCell.BOTTOM);
table.addCell(cell);
document.add(table);
In this example, I put "Received Rs (in Words):" and "Priceless" in two different cells, and I align the content of the first cell to the left and the content of the second cell to the right. This creates space between the two Chunks.
Example 2
// same code as above, except for:
table.setWidthPercentage(50);
I decreased the width of the table to show you what happens if some content doesn't fit a cell. As we didn't define any widths for the columns, the two columns will have an equal width, but as "Received Rs (in Words):" needs more space than "Priceless", the text doesn't fit the width of the cell and it is wrapped. We could avoid this, by defining a larger with for the first column when compared to the second column.
Example 3:
table = new PdfPTable(1);
table.setHorizontalAlignment(Element.ALIGN_LEFT);
table.setWidthPercentage(50);
Phrase p = new Phrase();
p.add(new Chunk("Received Rs (In Words):"));
p.add(new Chunk(new VerticalPositionMark()));
p.add(new Chunk("Priceless"));
table.addCell(p);
document.add(table);
This example is very close to what you have, but instead of introducing space characters to create space, I introduce a special chunk: new VerticalPositionMark()). This chunk will separate the two parts of the Phrase by introducing as much space as possible.
If this doesn't answer your question, you were probably looking for the concept known as leading. Leading is the space between the baseline of two lines of text. If that is the case, please read the following Q&As:
Changing text line spacing
Spacing/Leading PdfPCell's elements
Paragraph leading inside table cell
Adding more text to a cell in table in itext
How to maintain indentation if a paragraph takes new line in PdfPCell?
If your question isn't about leading, then maybe you're just looking for the concept known as non-breaking space:
How to use non breaking space in iTextSharp
Generating pdf file using Itext
I have string like below, and i can't split the string.
String result="Developed By : Mr.XXXXX";
i can create a paragraph in itext and set font with color like below,
Font dataGreenFont = FontFactory.getFont("Garamond", 10,Color.GREEN);
preface.add(new Paragraph(result, dataGreenFont));
it set the green color to entire text result but i want to set color only for Mr.XXXXX part. How do i do this?
First this: you are using an obsolete version of iText. Please upgrade!
As for your question: a Paragraph consists of a series of Chunk objects. A Chunk is an atomic part of text in which all the glyphs are in the same font, have the same font size, color, etc...
Hence you need to split your String in two parts:
Font dataGreenFont = FontFactory.getFont("Garamond", 10, BaseColor.GREEN);
Font dataBlackFont = FontFactory.getFont("Garamond", 10, BaseColor.BLACK);
Paragraph p = new Paragraph();
p.Add(new Chunk("Developed By : ", dataGreenFont));
p.Add(new Chunk("Mr.XXXXX", dataBlackFont));
document.add(p);
I would like to find out information about the layout of text in a PdfPCell. I'm aware of BaseFont.getWidthPointKerned(), but I'm looking for more detailed information like:
How many lines would a string need if rendered in a cell of a given width (say, 30pt)? What would the height in points of the PdfPCell be?
Give me the prefix or suffix of a string that fits in a cell of a given width and height. That is, if I have to render the text "Today is a good day to die" in a specific font in a PdfPCell of width 12pt and height 20pt, what portion of the string would fit in the available space?
Where does iText break a given string when asked to render it in a cell of a given width?
This is with regard to iText 2.1.6. Thanks.
iText uses the ColumnText class to render content to a cell. This is explained in my book on page 98-99. This means that, just like with ColumnText, you need to make the distinction between text mode and composite mode.
In any case, ColumnText measures the width of the characters and tests if they fit the available width. If not, the text is split. You can change the split behavior in different ways: by introducing hyphenation or by defining a custom split character.
I've written a small proof of concept to show how you could implement custom "truncation" behavior. See the TruncateTextInCell example.
Instead of adding the content to the cell, I have an empty cell for which I define a cell event. I pass the long text "D2 is a cell with more content than we can fit into the cell." to this event.
In the event, I use a fancy algorithm: I want the text to be truncated in the middle and insert "..." at the place where I truncated the text.
BaseFont bf = BaseFont.createFont();
Font font = new Font(bf, 12);
float availableWidth = position.getWidth();
int contentLength = content.length();
int leftChar = 0;
int rightChar = contentLength - 1;
availableWidth -= bf.getWidthPoint("...", 12);
while (leftChar < contentLength && rightChar != leftChar) {
availableWidth -= bf.getWidthPoint(content.charAt(leftChar), 12);
if (availableWidth > 0)
leftChar++;
else
break;
availableWidth -= bf.getWidthPoint(content.charAt(rightChar), 12);
if (availableWidth > 0)
rightChar--;
else
break;
}
String newContent = content.substring(0, leftChar) + "..." + content.substring(rightChar);
PdfContentByte canvas = canvases[PdfPTable.TEXTCANVAS];
ColumnText ct = new ColumnText(canvas);
ct.setSimpleColumn(position);
ct.addElement(new Paragraph(newContent, font));
ct.go();
As you can see, we get the available width from the position parameter and we check how many characters match, alternating between a character at the start and a character at the end of the content.
The result is shown in the resulting PDF: the content is truncated like this: "D2 is a c... the cell."
Your question about "how many lines" can be solved in a similar way. The ColumnText class has a getLinesWritten() method that gives you that information. You can find more info about positioning a ColumnText object in my answer to your other question: Can I tell iText how to clip text to fit in a cell
I am using CoreText to render multiple columns of text. However, when I set the first letter of the 1st paragraph to a bold, larger font than the rest of the text, I incur 2 issues (both visible in the attached image):
The spacing underneath the first line is too big (I understand that this is because the 1st character could be a g,y,p,q etc.
Lines below the first line now do not line up with corresponding lines in the next column.
Any advice on how to overcome these 2 issues would be greatly appreciated, thank you.
According to the documentation kCTParagraphStyleSpecifierMaximumLineHeight should have solved the problem, but unfortunately does not seem to work at least on IOS 4.3.
CTParagraphStyleSetting theSettings[5] =
{
{ kCTParagraphStyleSpecifierParagraphSpacing, sizeof(CGFloat), &spaceBetweenParaghraphs },
{ kCTParagraphStyleSpecifierParagraphSpacingBefore, sizeof(CGFloat), &topSpacing },
{ kCTParagraphStyleSpecifierLineSpacing, sizeof(CGFloat), &spaceBetweenLines },
{ kCTParagraphStyleSpecifierMinimumLineHeight, sizeof(CGFloat), &lineHeight},
{ kCTParagraphStyleSpecifierMaximumLineHeight, sizeof(CGFloat), &lineHeight}
};
CTParagraphStyleRef paragraphStyle = CTParagraphStyleCreate(theSettings, 5);
To be fair documentation says it's available in OS v10.5 and later.
kCTParagraphStyleSpecifierMaximumLineHeight:
The maximum height that any line in the frame will occupy, regardless of the font size or size of any attached graphic. Glyphs and graphics exceeding this height will overlap neighboring lines. A maximum height of 0 implies no line height limit. This value is always nonnegative.Type: CGFloat.
Default: 0.0.
Application: CTFramesetter.
Available in Mac OS X v10.5 and later.
Declared in CTParagraphStyle.h.
It seems the only way to fix this is with a workaround, which is to create 3 frames for the first column,1 for the W, 1 for the rest of the first sentence and 1 for the rest of the first column.