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Posted to users@pdfbox.apache.org by Ivan Ridao Freitas <in...@ivanrf.com> on 2016/05/10 16:38:52 UTC
Draw Graphics in a PDF
Is it possible to draw a java.awt.Graphics in a PDF?
I read in previous question from 2009 and 2013 that is not implemented
and will not be.
Would it be possible to add that feature to PDFBox 2.x?
Currently, I'm using Barcode4J which generates an SVG, EPS, Image or
Java2D. I'm doing fine with the PNG option. I wanted to use SVG for
quality but I was not able to. So, my last option is Java2D.
Drawing Graphics on a PDF would have the same quality as a SVG? or using
SVG format is the only way to draw inside a PDF?
Thanks!
Ivan
Re: Draw Graphics in a PDF
Posted by John Hewson <jo...@jahewson.com>.
> On 10 May 2016, at 16:15, Ivan Ridao Freitas <in...@ivanrf.com> wrote:
>
> I got the code working for horizontal barcodes, looks great! just like an SVG. In fact, is better since I can select the code text :)
>
> Question: the function that draws the text has the parameter "String fontName". How can I get a PDType1Font by name?
We don’t have an API to do that but you could just map some known font names to the built-in fonts such as Helvetica or Courier.
— John
> For now, I'm using PDType1Font.HELVETICA which is also the default font for Barcode4J.
>
> I will try to make a post with the code when I finish it. It would be nice to send it to the Barcode4J project, but last release was on 2010...
>
> Ivan
> On 10/5/2016 4:19 p. m., John Hewson wrote:
>> We often get people asking about Barcode4J, so feel free to share the resulting code, if possible. There will be interest.
>>
>> — John
>
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Re: Draw Graphics in a PDF
Posted by Ivan Ridao Freitas <in...@ivanrf.com>.
I got the code working for horizontal barcodes, looks great! just like
an SVG. In fact, is better since I can select the code text :)
Question: the function that draws the text has the parameter "String
fontName". How can I get a PDType1Font by name?
For now, I'm using PDType1Font.HELVETICA which is also the default font
for Barcode4J.
I will try to make a post with the code when I finish it. It would be
nice to send it to the Barcode4J project, but last release was on 2010...
Ivan
On 10/5/2016 4:19 p. m., John Hewson wrote:
> We often get people asking about Barcode4J, so feel free to share the resulting code, if possible. There will be interest.
>
> \u2014 John
Re: Draw Graphics in a PDF
Posted by John Hewson <jo...@jahewson.com>.
> On 10 May 2016, at 11:35, Ivan Ridao Freitas <in...@ivanrf.com> wrote:
>
> Thanks for your reply! it made me realize that I can write a CanvasProvider to draw a barcode and its as easy as draw rectangles and text on a PDPageContentStream. :)
We often get people asking about Barcode4J, so feel free to share the resulting code, if possible. There will be interest.
— John
> Ivan
> On 10/5/2016 2:40 p. m., John Hewson wrote:
>>> Currently, I'm using Barcode4J which generates an SVG, EPS, Image or Java2D. I'm doing fine with the PNG option. I wanted to use SVG for quality but I was not able to. So, my last option is Java2D.
>> You’re likely after only a handful of drawing commands, you could use Java2D’s DebugGraphics to find out which ones and then it wouldn’t be hard to write an absolutely minimal Graphics implementation which draws to a PDPageContentStream.
>>
>>> >Drawing Graphics on a PDF would have the same quality as a SVG? or using SVG format is the only way to draw inside a PDF?
>> Drawing with a PDPageContentStream gives you vector graphics equivalent in quality to SVG, EPS, Java2D, etc.
>>
>> — John
>>
>
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Re: Draw Graphics in a PDF
Posted by Ivan Ridao Freitas <in...@ivanrf.com>.
Thanks for your reply! it made me realize that I can write a
CanvasProvider to draw a barcode and its as easy as draw rectangles and
text on a PDPageContentStream. :)
Ivan
On 10/5/2016 2:40 p. m., John Hewson wrote:
>> Currently, I'm using Barcode4J which generates an SVG, EPS, Image or Java2D. I'm doing fine with the PNG option. I wanted to use SVG for quality but I was not able to. So, my last option is Java2D.
> You\u2019re likely after only a handful of drawing commands, you could use Java2D\u2019s DebugGraphics to find out which ones and then it wouldn\u2019t be hard to write an absolutely minimal Graphics implementation which draws to a PDPageContentStream.
>
>> >Drawing Graphics on a PDF would have the same quality as a SVG? or using SVG format is the only way to draw inside a PDF?
> Drawing with a PDPageContentStream gives you vector graphics equivalent in quality to SVG, EPS, Java2D, etc.
>
> \u2014 John
>
Re: Draw Graphics in a PDF
Posted by John Hewson <jo...@jahewson.com>.
> On 10 May 2016, at 09:38, Ivan Ridao Freitas <in...@ivanrf.com> wrote:
>
> Is it possible to draw a java.awt.Graphics in a PDF?
No, it’s not.
>
> I read in previous question from 2009 and 2013 that is not implemented and will not be.
>
> Would it be possible to add that feature to PDFBox 2.x?
Probably not because AWT has its own notions of Font and Paint which are different from
those found in PDFBox.
> Currently, I'm using Barcode4J which generates an SVG, EPS, Image or Java2D. I'm doing fine with the PNG option. I wanted to use SVG for quality but I was not able to. So, my last option is Java2D.
You’re likely after only a handful of drawing commands, you could use Java2D’s DebugGraphics to find out which ones and then it wouldn’t be hard to write an absolutely minimal Graphics implementation which draws to a PDPageContentStream.
> Drawing Graphics on a PDF would have the same quality as a SVG? or using SVG format is the only way to draw inside a PDF?
Drawing with a PDPageContentStream gives you vector graphics equivalent in quality to SVG, EPS, Java2D, etc.
— John
> Thanks!
> Ivan
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