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.
Related
FileName = fullfile('C:\Users\User\Desktop\1cm circle cropped 0.27',sprintf('circle_cropped_%d.jpg',count));
The code I use would give file name
(circle_cropped_1.jpg, circle_cropped_2.jpg, circle_cropped_3.jpg.........)
How to name the images with "circle_cropped_001.jpg, circle_cropped_002.jpg, circle_cropped_003.jpg.........................."
And how to move the counting number? to be "001_circle_cropped.jpg, 002_circle_cropped.jpg, 003_circle_cropped.jpg......................."
FileName = fullfile('C:\Users\User\Desktop\1cm circle cropped 0.27',sprintf('%03d_circle_cropped.jpg',count));
Assuming you want a total field width of 3. If you want more, specify %04d or %05d etc, the prefix 0 there ensures the desired string width is filled by padding with zeros.
I have a text that comes from multiple sources and ends with \n\n for a line break in UILabel that has lines set to 0 through Storyboard.
For example:
let text = “Some text at the beginning of the paragraph that is this long\n\nSecond type of text\n\nSome longer text that is on later on in the paragraph”
The output is correct:
Some text at the beginning of the paragraph that is this long
Second type of text
Some longer text that is on later on in the paragraph
I have changed the line spacing to slightly increase the gaps between lines but can’t change the height of the empty line. I want the line break to be approximately half the size of a normal line break. I tried after/before paragraph settings but can’t get an empty line to be half the size.
Any idea if this is possible and what is the best way to achieve this through storyboard or programmatically.
----- Edit:
This is what I tried:
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.paragraphSpacing = 0.1
paragraphStyle.paragraphSpacingBefore = 0.1
let attrString = NSMutableAttributedString(string: text)
attrString.addAttribute(NSAttributedString.Key.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attrString.length))
cell.firstLabel?.attributedText = attrString
My code
VerticalText vt = new VerticalText(writer.getDirectContent());
vt.setVerticalLayout(marginLeft + squareHeight, 1191.0f - marginTop, squareHeight, 3, 20);
vt.setAlignment(Element.ALIGN_CENTER);
Paragraph p = new Paragraph(imgr.getText(), fontV);
p.setLeading(10);
vt.addText(p);
vt.go();
The result : Text is middle in vertical mode.
I want to display text is center in horizontal mode as below link:
How to solve this problem ?
As documented, left, center and right align has a different meaning in the context of VerticalText. Left is top, center is middle and right is bottom.
With class VerticalText, you always write from right to left. There is currently no way to align the text as shown in the screen shot to the right.
However, you could work around this problem by adding the vertical text in simulation mode first and then calculate the number of lines that have been written.
See for instance the VerticalText1 example from my book. I have adapted the code of that example like this:
BaseFont bf = BaseFont.createFont(
"KozMinPro-Regular", "UniJIS-UCS2-V", BaseFont.NOT_EMBEDDED);
Font font = new Font(bf, 20);
VerticalText vt = new VerticalText(writer.getDirectContent());
vt.setVerticalLayout(390, 570, 540, 12, 30);
vt.addText(new Chunk(MOVIE, font));
vt.go();
System.out.println(vt.getMaxLines());
vt.addText(new Phrase(TEXT1, font));
vt.go();
System.out.println(vt.getMaxLines());
vt.setAlignment(Element.ALIGN_RIGHT);
vt.addText(new Phrase(TEXT2, font));
vt.go();
System.out.println(vt.getMaxLines());
The output of the System.out calls is:
11
4
1
These numbers are the number of lines that are available after each go().
We start with 12 lines as defined in the setVerticalLayout() method.
We add MOVIE and there are 11 lines left. We've defined a leading of 30, which means we've already consumed (12 - 11) x 30pt = 30pt.
Then we add TEXT1 which is distributed over 7 lines, which take 7 * 30pt in width. In total we now have consumed (12 - 4) x 30pt = 240pt.
Finally we add TEXT2 which is distributed over 3 lines. Only 1 line is left. The total horizontal width of all the text is 330pt (we had only 30pt left).
Now that you know this math, you can execute the go() method in simulation mode, calculate the width that was consumed and use that info to add your text for real at the desired position.
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'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;
}