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All,
A simple tweak to the getFullUnicodeFont method to cache the loaded
font made a huge difference. The resulting file is now only 20% of the
original size when not embedding the same font over and over again.
Just so I have things sorted in my own mind: each font used will still
show on each page where it's used, right? In the "smaller" file, I can
still see the font mentioned on more than one page, but it's got the
same "CID" and the same font name ("AAAROV+ArialUnicodeMS" -- no more
"AAA???+ArialUnicodeMS" coming up multiple times with slightly
different names).
Of course, I'm also seeing the Type1 fonts show up repeated on
multiple pages as well -- that's normal, right?
Thanks,
- -chris
On 5/16/19 16:06, Christopher Schultz wrote:
> Tilman,
>
> On 5/16/19 12:17, Tilman Hausherr wrote:
>> PDFDebugger.
>
>> Look at the resources. If the same font occurs several times,
>> then you did something wrong. It should occur only once in a
>> document.
>
> Okay, it looks like it is indeed showing multiple times. Here's
> what I can see in the document:
>
>> Page 1 Contents MediaBox Parent Resources (1) [8 0 R] Font (12)
>> [15 0 R]
> F1 (6) [19 0 R] /T:Font /S:Type0 (AAAGXI+ArialUnicodeMS) F10 (4)
> [28 0 R] /T:Font /S:Type1 (Times-Italic) F11 (6) [29 0 R] /T:Font
> /S:Type0 (AAABJI+ArialUnicodeMS) (9 more listed: 3 total type 1
> fonts, 9 total type 0 fonts including those above) The font
> AAA???I+ArialUnicodeMS shows up for all of the "type 0" entries .
>
>> Page 2 [...] Resources Font (3)
> F1 (4) [20 0 R] /T:Font /S:Type1 (Times-Roman) F2 (6) [31 0 R]
> /T:Font /S:Type0 (AAAYGI+ArialUnicodeMS) F3 (4) [28 0 R] /T:Font
> /S:Type1 (Times-Italic)
>
>> Page 3 [...] Resources Font (2)
> F1 (4) [20 0 R] /T:Font /S:Type1 (Times-Roman) F2 (4) [28 0 R]
> /T:Font /S:Type1 (Times-Italic)
>
>> Page 4 [...] Resources Font (2)
> F1 (4) [20 0 R] /T:Font /S:Type1 (Times-Roman) F2 (4) [28 0 R]
> /T:Font /S:Type1 (Times-Italic)
>
> So perhaps I am even using the built-in fonts incorrectly if they
> are being mentioned on every page. Or is each page which uses a
> font expected to have its own Font entry in the resources?
>
> Does this mean I am "adding" the font too many times somehow?
>
> My code looks like this:
>
> private void writeWrappedText(PDFont font, int fontSize, String
> text, Color color) throws IOException { int paragraphWidth = 500;
> boolean indented = false;
>
> String strippedText = sanitizeString(text); int start = 0; int end
> = 0; int wrappedLineCnt = 1;
>
> if(!isAnsiEncoding(strippedText)) { if(logger.isDebugEnabled())
> logger.debug("Text contains non-ansi characters: " + text);
>
> font = getFullUnicodeFont(); }
>
> for ( int i : getPossibleWrapPoints(strippedText) ) { float width
> = font.getStringWidth(strippedText.substring(start,i)) / 1000 *
> fontSize; if ( start < end && width > paragraphWidth ) { if
> (wrappedLineCnt == 1) setOffsetX(getOffsetXforMargin());
> printSanitizedLine(font, fontSize,
> strippedText.substring(start,end), indented ? _pageIndent : 0,
> color); wrappedLineCnt++; start = end; } end = i; } if
> (wrappedLineCnt == 1) setOffsetX(getOffsetXforMargin()); // Last
> piece of text printSanitizedLine(font, fontSize,
> strippedText.substring(start), indented ? _pageIndent : 0, color);
> }
>
> The getFullUnicodeFont method is:
>
> private PDFont getFullUnicodeFont() { if(null == _doc) throw new
> IllegalStateException("Document has not yet been created; cannot
> load a new font");
>
> InputStream in = null; try { String fullUnicodeFontFile =
> "/resources/fonts/ARIALUNI.TTF" ; in =
> getClass().getResourceAsStream(fullUnicodeFontFile); if(null ==
> in) throw new MissingResourceException("Cannot load font file " +
> fullUnicodeFontFile, this.getClass().getName(),
> fullUnicodeFontFile);
>
> PDFont font = PDType0Font.load(_doc, in);
>
> return font; } catch (IOException ioe) { throw new
> RuntimeException("Cannot load font", ioe); }
>
> }
>
> Re-reading that code, it's obvious that I should be storing the
> font once loaded and re-using it. I'm guessing that
> PDType0Font.load(PDDocument,InputStream) doesn't recognize that
> the font has already been loaded and just adds it a second (or
> third, etc.) time. Can anyone confirm that?
>
> I know that my code isn't the best in terms of only choosing to
> render certain glyphs in this "full" font. I am working to improve
> that, and I know there is example code for choosing the "best" font
> for each character in a string, which I'll be reviewing
> separately.
>
> Thanks, -chris
>
>> Am 16.05.2019 um 18:09 schrieb Christopher Schultz: All,
>
>> We have a process that generates PDF documents usually using the
>> default Type-1 built-in fonts, so the documents do not embed
>> the font information.
>
>> We recently added the ability for the documents to include font
>> information if certain glyphs were not available in the default
>> font(s) and, as expected, the file sizes end up being bigger
>> when that happens.
>
>> What is the best tool to look at a particular document to see
>> why it ended up being so large? I'm not sure I can visually tell
>> by looking at the document which character triggered the
>> inclusion of the font, and then why that font was used for what I
>> can only assume was a lot of text. By inspecting the file, I'm
>> sure I can improve my code so that we have fewer uses of this
>> additional font and therefore keep the file sizes to a minimum.
>
>> Thanks, -chris
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