[reportlab-users] Re: long tables
Henning von Bargen
reportlab-users@reportlab.com
Tue, 15 Apr 2003 14:10:03 +0200
> Message: 6
> From: "Andy Robinson" <andy@reportlab.com>
> To: <reportlab-users@reportlab.com>
> Subject: RE: [reportlab-users] long tables
> Date: Mon, 14 Apr 2003 17:24:37 +0100
> Reply-To: reportlab-users@reportlab.com
>
> > Then the calc() function could just stop as soon as the
> > computed height
> > for the first m rows is greater than availHeight.
> > It could then return the height computed so far
> > and maybe set a flag stating that even more rows follow.
> > With this solution, the size calculation would occur only
> > once for each row.
> >
> > Just an idea. Has anyone tried it? Could it cause trouble?
> >
>
> That's exactly what I wanted to do all along, but never
> got around to. Feel free to try :-)
>
> There are 2 headaches at present we should think about.
>
> (1) the frame used on page 2 may not be the same size as
> the one used on page 1 and so on. So you could cache the
> sizing info for the table, but would have to recheck that
> page 2 was flowing into a frame of the same size before
> reusing it. (IMHO we should size enough stuff to figure
> out the stuff for the current page, then not calculate
> the rest of the cells, as it sidesteps this).
This is exactly what I meant:
Don't try to calculate the size of the whole table,
just enough to know that we have to split.
>
>
> (2) we have a basic problem with paragraphs in table
> cells, as Robin outlined a few days back. Paragraphs
> don't have a preferred width. What algorithm should
> be applied in a case like this (generalized to many
> rows and columns)?
>
> <tr>
> <td>
> Really really long text here in cell one, would wrap
> over many lines of text. Blah blah blah.
> </td>
> <td>
> Short column two.
> </td>
> </tr>
> <tr>
> <td>
> Short column one
> </td> <td>
> Really really long text here in cell two, would wrap
> over many lines of text. Blah blah blah.
> </td>
> </tr>
>
> The full HTML table algorithm will kill performance
> for big multi page tables, and what's more it requires
> paper to have scrollvars which is generally not true
> in real life. So we need to define some sensible goals.
>
> Ideas welcome!
Well, in the general case things are getting complicated...
I'd suggest not to use the optimized calc() if columns are not fixed width.
Henning
>
> - Andy
>
> --__--__--
>
> Message: 7
> From: "Andy Robinson" <andy@reportlab.com>
> To: <reportlab-users@reportlab.com>
> Subject: RE: [reportlab-users] carriage return in paragraph?
> Date: Mon, 14 Apr 2003 17:53:58 +0100
> Reply-To: reportlab-users@reportlab.com
>
> > > actually a feature ;)
> >
> > And a pretty nice one, believe me !
>
> And even documented, on the very first page
> of the tables chapter.
>
> - Andy
>
> p.s. I don't get to say that often. It feels good ;-)
>
> --__--__--
>
> Message: 8
> Date: Tue, 15 Apr 2003 02:19:41 -0700 (PDT)
> From: saravanan annamalai <saravanan_anna@yahoo.com>
> To: reportlab-users@reportlab.com
> Subject: [reportlab-users] Missing T1 files!...error
> Reply-To: reportlab-users@reportlab.com
>
> --0-589539648-1050398381=:57596
> Content-Type: text/plain; charset=us-ascii
>
> Hi all,
> I am a newbie to reportlab graphics.. I have installed rl graphics and i
tried to run the following... from reportlab import rl_config
> from reportlab.lib import colors
> from reportlab.graphics.shapes import *
> from reportlab.pdfgen.canvas import Canvasd = Drawing(400, 200)
> d.add(Rect(50, 50, 300, 100, fillColor=colors.yellow))
> d.add(String(150,100, 'Hello World',fontName='Times-Roman',
> fontSize=18, fillColor=colors.red))from reportlab.graphics import renderPM
> renderPM.drawToFile(d,'./example1.png',fmt='PNG') Its saying an
error...Cant setfont(times-roman)..Missing T1 files....
> But I am able to make pdf files...and font works perfectly..............
> Hope some one will get me out of this situation Thanx from saravanan
annamalai
>
>
> ---------------------------------
> Do you Yahoo!?
> The New Yahoo! Search - Faster. Easier. Bingo.
> --0-589539648-1050398381=:57596
> Content-Type: text/html; charset=us-ascii
>
> <DIV>
> <DIV>Hi all,<BR> I am a newbie to reportlab graphics.. I have
installed rl graphics and i tried to run the following...</DIV>
> <DIV> </DIV>
> <DIV>from reportlab import rl_config<BR>from reportlab.lib import
colors<BR>from reportlab.graphics.shapes import *<BR>from
reportlab.pdfgen.canvas import Canvas</DIV>
> <DIV>d = Drawing(400, 200)<BR>d.add(Rect(50, 50, 300, 100,
fillColor=colors.yellow))<BR>d.add(String(150,100, 'Hello
World',fontName='Times-Roman',<BR>fontSize=18, fillColor=colors.red))</DIV>
> <DIV>from reportlab.graphics import
renderPM<BR>renderPM.drawToFile(d,'./example1.png',fmt='PNG')</DIV>
> <DIV> </DIV>
> <DIV> Its saying an error...Cant
setfont(times-roman)..Missing T1 files....<BR>But I am able to make pdf
files...and font works perfectly..............<BR>Hope some one will get me
out of this situation</DIV>
> <DIV> </DIV>
> <DIV>Thanx from saravanan annamalai</DIV></DIV><p><br><hr size=1>Do you
Yahoo!?<br>
> <a
href="http://us.rd.yahoo.com/search/mailsig/*http://search.yahoo.com">The
New Yahoo! Search</a> - Faster. Easier. Bingo.
> --0-589539648-1050398381=:57596--
>
>
> --__--__--
>
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