Re: Res: [fw-formats] Upcoming Zend_Pdf Enhancements

Yeah, thanks!!

It would be great to have all that features in Zend_Pdf.
In this case it would be some documented, test cases added, etc,
etc ... ...officially released.

Its a pity but right now it is just a third party component that is not
allowed to be used in serious projects :/

On Tue, 2009-04-07 at 05:33 -0700, Luiz Fernando wrote:
> Same question.
>
> Please look at
>
> http://www.refw.org/
>
> It's Zend_Pdf based and they like to contribute to ZF.
>
> This component, Re_Pdf, have a lot of goodies over Zend_Pdf.
>
> But don't have a good documentation, only API PHPDOC, no reference
> guide, tutorials...
> Only a IRC channel where nobody returns.
>
> Best regards,
> Luiz Fernando
>
>
>
>
> ______________________________________________________________________
> De: Joseph <joseph007@ukr.net>
> Para: fw-formats <fw-formats@lists.zend.com>
> Enviadas: Terça-feira, 7 de Abril de 2009 7:00:01
> Assunto: Re: [fw-formats] Upcoming Zend_Pdf Enhancements
>
> Same question!!
>
>
> On Wed, 2009-02-04 at 14:49 -0800, mvug wrote:
> > Does anybody know what the status is? And especially the status of
> the
> > enhancements to the memory usage and template system of zend pdf?
> > Thanks!
> >
> >
> >
> >
> > Willie Alberty wrote:
> > >
> > > For the last few months I have been working with Kevin McArthur on
> a
> > > comprehensive PDF generation project for a client [Streamflow] who
> has
> > > some pretty advanced layout needs. The project is nearing
> completion
> > > and we have been discussing the possibility of contributing
> large
> > > portions of the code back to the Zend Framework as improvements
> to
> > > Zend_Pdf.
> > >
> > > In light of several recent postings to fw-general and fw-formats,
> as
> > > well as a few encouraging proposals recently submitted to the
> Wiki, we
> > > would like to formally announce our plans and describe the new
> > > functionality at a high level here.
> > >
> > > We will be submitting proposals in the coming weeks that
> describe
> > > these new components in more detail along with fully-functional
> > > reference implementations. Our hope is to join forces with other
> > > interested developers to help fast-track these proposals through
> the
> > > feedback and approval process, write tests, user documentation,
> and
> > > examples, and exercise the code as much as possible.
> > >
> > > We're really proud of this work and are excited to share it with
> the
> > > community. We believe that these enhancements will further
> establish
> > > Zend_Pdf's role as the gold standard for PDF generation using PHP.
> > >
> > >
> > > Text Layout Engine
> > > ------------------
> > >
> > > "How do I wrap long lines of text?" This is probably the most
> commonly-
> > > asked question regarding Zend_Pdf. I'm pleased to report that not
> only
> > > have we solved the problem of text-wrapping, but a whole host of
> > > others as well. The new engine provides fully-automatic text
> layout,
> > > and has customization hooks in a variety of places.
> > >
> > > Line breaks are calculated using the Unicode Line Breaking
> Algorithm
> > > (UAX #14), providing linguistically-appropriate line breaks, not
> just
> > > at whitespace characters.
> > >
> > > Paragraph styles allow you to specify left-, center-, and right-
> > > alignment, as well as full justification, line leading, line
> height,
> > > line multiple (double-space, triple-space, etc.), pre- and post-
> > > paragraph spacing, left- and right-side margins, and first-line
> > > indentation. Paragraph styles also support left-, center-, right-,
> and
> > > decimal-aligned tab stops, with or without leaders, for
> intra-line
> > > alignment needs.
> > >
> > > In addition to the left-to-right line sweep used by most
> Latin-based
> > > scripts, right-to-left line sweep is also supported, and is
> > > automatically detected by the layout engine; you never need to
> supply
> > > strings in reverse character order for right-to-left text layout.
> > >
> > > The layout engine is based around the concept of an attributed
> string.
> > > These are Unicode strings of unlimited length, and fully support
> the
> > > entire Unicode character set, including characters outside the
> Basic
> > > Multilingual Plane (BMP).
> > >
> > > Attributed strings allow you to assign stylistic attributes to
> > > arbitrary ranges of characters within the string. These attributes
> are
> > > used by typesetters to determine the specific look and location
> for
> > > every character. This means that you can make unlimited style
> changes
> > > within a block of text, even changing styles
> character-by-character if
> > > desired.
> > >
> > > The layout engine automatically manages all of these style
> changes,
> > > applying them as necessary when drawing the text on the page.
> The
> > > following style attributes are supported:
> > >
> > > - Font
> > > - Font size
> > > - Fill color
> > > - Stroke width and color
> > > - Underline and strikethrough
> > > - Super- and sub-script
> > > - Background color
> > >
> > > You can add your own custom attributes as well, which you can use
> in
> > > your own subclasses to completely customize the layout engine's
> > > behavior.
> > >
> > > These attributed strings will eventually be shared with Zend_Rtf
> > > (recently proposed by Andries Seutens), as each attributed string
> is
> > > essentially a self-contained RTF document. This opens up the
> > > possibility for generating fully-styled PDF or RTF output from
> the
> > > same source with only a couple of lines of code. It will also
> > > eventually be possible to use existing styled RTF documents as
> the
> > > basis for PDF text drawing, eliminating the need to manually
> apply
> > > style attributes in your PHP code.
> > >
> > > A layout manager class is responsible for drawing these
> attributed
> > > strings. It lays out the text in a series of arbitrarily-shaped
> text
> > > containers, automatically moving from one to the next as each is
> > > filled. Rectangular and circular containers will be provided, but
> you
> > > can easily create your own custom containers for other shapes or
> to
> > > flow text around images.
> > >
> > > Multi-column output is as easy as creating two adjacent text
> > > containers on the same page. Text containers don't even need to be
> on
> > > the same PDF page: you can start your text in a small container
> on
> > > page 1, then continue it on page 17.
> > >
> > > Callback functions are provided to allow you to create text
> additional
> > > containers as needed, which can be located on new pages. This is
> > > useful if you do not know the length of the text you are drawing
> ahead
> > > of time, or if you want to adapt your layout on-the-fly.
> > >
> > > You can also use multiple layout managers on a single page,
> allowing
> > > you to create complex multi-page flows for a series of text
> runs.
> > > These can be useful for creating page headers and footers, or
> for
> > > running stories side-by-side in a newsletter.
> > >
> > >
> > > Drawing Model
> > > -------------
> > >
> > > Three new primitive geometry classes allow you to precisely
> define
> > > drawing locations, sizes, and regions. They also provide a host
> of
> > > convenience functions allowing for calculation, conversion,
> > > intersection testing, etc.:
> > >
> > > - Point: x and y coordinate
> > > - Size: height and width
> > > - Rectangle: combination of a point and size
> > >
> > > PDF pages are drawn using a series of content streams, which
> contain
> > > all of the low-level drawing commands. Zend_Pdf_Page currently
> manages
> > > its own private content stream.
> > >
> > > We've separated content streams from Zend_Pdf_Page, promoting them
> to
> > > first-class objects. This allows us to use these content streams
> as
> > > templates that can be reused again and again, either on a single
> page
> > > or multiple pages. Templates can greatly reduce PDF file sizes
> and
> > > improve memory use and performance in PDF viewer applications.
> > >
> > > It is also possible to create a template from any page in an
> existing
> > > PDF document. You can then reuse the template in the same PDF, or
> even
> > > copy it to a new PDF document, where you can use it as a page
> > > background, draw it as a thumbnail, perform imposition, etc.
> > >
> > >
> > > Performance and Memory
> > > ----------------------
> > >
> > > We've also made numerous performance and memory-usage
> improvements
> > > throughout the code. Most data is now lazily-loaded, allowing you
> to
> > > manipulate very large documents, containing thousands or millions
> of
> > > individual objects or hundreds of megabytes or gigabytes in size,
> with
> > > a very low memory footprint.
> > >
> > >
> > > Future Enhancements
> > > -------------------
> > >
> > > All of this new functionality lays the groundwork for even more
> > > powerful enhancements down the road:
> > >
> > > - Top-to-bottom line sweep for Asian scripts
> > > - Bi-directional text (for Hebrew, Arabic, and others)
> > > - Bulleted and numbered text lists
> > > - HTML-inspired inline text tables
> > > - Inline attachments (for example, images that flow with text)
> > > - Advanced typographic features such as tracking, pairwise
> kerning,
> > > ligatures, etc.
> > > - Hyphenation support
> > > - Glyph substitution using fallback fonts
> > > - and more...
> > >
> > >
> > > Again, we're really excited to be sharing this code with the
> > > community. We'll be creating the proposals for the various
> components
> > > in the coming weeks and announcing them on the fw-formats list
> when
> > > they're ready for review. In the meantime, if you have any
> high-level
> > > questions, please don't hesitate to ask.
> > >
> > > --
> > >
> > > Willie Alberty, Owner
> > > Spenlen Media
> > > willie@spenlen.com
> > >
> > > http://www.spenlen.com/
> > >
> > >
> > >
> >
>
>
>
>
> ______________________________________________________________________
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