You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@pdfbox.apache.org by Itai <it...@gmail.com> on 2017/11/19 16:01:21 UTC
General method for converting code/unicode to GeneralPath?
Hello,
I am trying to render PDFs in JavaFX using PDFBox, mostly as an exercise
for myself.
I am extending PDFGraphicsStreamEngine, and I have come across a
predicament in the method showFontGlyph(Matrix textRenderingMatrix, PDFont
font, int code, String unicode, Vector displacement), namely - how do I get
a GeneralPath for the glyph in question.
It seems each PDFont class has a slightly different way for achieving this,
and I couldn't find any succinct summary of all the methods. So far I have
come up with this bit of code:
GeneralPath gp;
if (font instanceof PDVectorFont) {
PDVectorFont vFont = (PDVectorFont) font;
gp = vFont.getPath(code);
} else if (font instanceof PDSimpleFont) {
if (font instanceof PDType1Font) {
PDType1Font t1Font = (PDType1Font) font;
gp = t1Font.getType1Font().getPath(t1Font.codeToName(code));
} else if (font instanceof PDType1CFont) {
PDType1CFont t1cFont = (PDType1CFont) font;
gp = t1cFont.getPath(t1cFont.codeToName(code));
} else {
// Presumably this should only be PDType3Font, as
PDTrueTypeFont is also a PDVectorFont
PDSimpleFont sFont = ((PDSimpleFont) font);
gp = sFont.getPath(unicode);
}
} else {
// Should never happen?
throw new RuntimeException("Unknown font type");
}
My question is - did I cover all possibilities? Am I doing this correctly?
Or is there some built-in method for achieving the same purpose, which is
agnostic to the type of PDFont given?
Thanks,
Itai.
Re: General method for converting code/unicode to GeneralPath?
Posted by Itai <it...@gmail.com>.
Thank you. It is at least good to know I wasn't missing something trivial
as it is indeed a tricky issue.
The code in DrawPrintTextLocations seems very helpful.
On Sun, Nov 19, 2017 at 6:50 PM, Tilman Hausherr <TH...@t-online.de>
wrote:
> Yeah it's tricky. See also the source code of DrawPrintTextLocations which
> was written based on showFontGlyph().
>
> I can't tell whether your code is correct because it's all so complex. The
> best is to 1) copy some code that works 2) test with many files.
>
> Tilman
>
>
> Am 19.11.2017 um 17:01 schrieb Itai:
>
>> Hello,
>> I am trying to render PDFs in JavaFX using PDFBox, mostly as an exercise
>> for myself.
>> I am extending PDFGraphicsStreamEngine, and I have come across a
>> predicament in the method showFontGlyph(Matrix textRenderingMatrix, PDFont
>> font, int code, String unicode, Vector displacement), namely - how do I
>> get
>> a GeneralPath for the glyph in question.
>> It seems each PDFont class has a slightly different way for achieving
>> this,
>> and I couldn't find any succinct summary of all the methods. So far I have
>> come up with this bit of code:
>>
>>
>> GeneralPath gp;
>> if (font instanceof PDVectorFont) {
>> PDVectorFont vFont = (PDVectorFont) font;
>> gp = vFont.getPath(code);
>> } else if (font instanceof PDSimpleFont) {
>> if (font instanceof PDType1Font) {
>> PDType1Font t1Font = (PDType1Font) font;
>> gp = t1Font.getType1Font().getPath(
>> t1Font.codeToName(code));
>> } else if (font instanceof PDType1CFont) {
>> PDType1CFont t1cFont = (PDType1CFont) font;
>> gp = t1cFont.getPath(t1cFont.codeToName(code));
>> } else {
>> // Presumably this should only be PDType3Font, as
>> PDTrueTypeFont is also a PDVectorFont
>> PDSimpleFont sFont = ((PDSimpleFont) font);
>> gp = sFont.getPath(unicode);
>> }
>> } else {
>> // Should never happen?
>> throw new RuntimeException("Unknown font type");
>> }
>>
>> My question is - did I cover all possibilities? Am I doing this correctly?
>> Or is there some built-in method for achieving the same purpose, which is
>> agnostic to the type of PDFont given?
>>
>> Thanks,
>> Itai.
>>
>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@pdfbox.apache.org
> For additional commands, e-mail: users-help@pdfbox.apache.org
>
>
Re: General method for converting code/unicode to GeneralPath?
Posted by Tilman Hausherr <TH...@t-online.de>.
Yeah it's tricky. See also the source code of DrawPrintTextLocations
which was written based on showFontGlyph().
I can't tell whether your code is correct because it's all so complex.
The best is to 1) copy some code that works 2) test with many files.
Tilman
Am 19.11.2017 um 17:01 schrieb Itai:
> Hello,
> I am trying to render PDFs in JavaFX using PDFBox, mostly as an exercise
> for myself.
> I am extending PDFGraphicsStreamEngine, and I have come across a
> predicament in the method showFontGlyph(Matrix textRenderingMatrix, PDFont
> font, int code, String unicode, Vector displacement), namely - how do I get
> a GeneralPath for the glyph in question.
> It seems each PDFont class has a slightly different way for achieving this,
> and I couldn't find any succinct summary of all the methods. So far I have
> come up with this bit of code:
>
>
> GeneralPath gp;
> if (font instanceof PDVectorFont) {
> PDVectorFont vFont = (PDVectorFont) font;
> gp = vFont.getPath(code);
> } else if (font instanceof PDSimpleFont) {
> if (font instanceof PDType1Font) {
> PDType1Font t1Font = (PDType1Font) font;
> gp = t1Font.getType1Font().getPath(t1Font.codeToName(code));
> } else if (font instanceof PDType1CFont) {
> PDType1CFont t1cFont = (PDType1CFont) font;
> gp = t1cFont.getPath(t1cFont.codeToName(code));
> } else {
> // Presumably this should only be PDType3Font, as
> PDTrueTypeFont is also a PDVectorFont
> PDSimpleFont sFont = ((PDSimpleFont) font);
> gp = sFont.getPath(unicode);
> }
> } else {
> // Should never happen?
> throw new RuntimeException("Unknown font type");
> }
>
> My question is - did I cover all possibilities? Am I doing this correctly?
> Or is there some built-in method for achieving the same purpose, which is
> agnostic to the type of PDFont given?
>
> Thanks,
> Itai.
>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@pdfbox.apache.org
For additional commands, e-mail: users-help@pdfbox.apache.org