Creating the Presentation
In the previous chapter, we designed our presentation. We know now with
some accuracy the general contents of the talk. We know were we will
Slides should contain a kind of guideline for your talk.
Although the quality of displaying devices did improve considerably over the last years (a good quality beamer with 1024x768 is readily available), they cannot compete with plastic foil. But even with the perfect sharpeness of foils, you shall not put much information on it.
Good slides are sparsely filled.notation of strings in Perl (might also be useful for more experienced Perl programmers).
A presentation in PPresenter is a Perl program. You write a program using objects (Perl can be used as an object oriented language, and PPresenter is doing so). Each slide is an object. But the main object (the only one you create explicitly) is the PPresenter object.
An presentation, without any slides defined, looks as follows:
1: #!/usr/local/bin/perl -w 2: use strict; 3: use PPresenter; 4: my $show = PPresenter->new; 5: $show->run;If you want to copy this example into a file, click this link: "Template for the Presentation".
Also the second line is used to improve our code. By adding
The third line orders Perl to compile the software of PPresenter. On its turn, the PPresenter software will enforce compilation of Tk (the graphical system) and ImageMagick (for image manipulation, if installed). Compilation consumes quite some time (a few seconds) because we are talking about many thousands lines of Perl-script.
At line 4, we create the presentation (-object). In one program, you can
define more than one presentation, but it is usually easier to make
one presentation on more than one screen in such case.
The last line (line 5) starts the show. Between lines 4 and 5, the
actual work has to be done. Inbetween those lines, you change the
defaults, possibly add extra displays, and add the slides to your presentation.
The last line (line 5) starts the show. Between lines 4 and 5, the actual work has to be done. Inbetween those lines, you change the defaults, possibly add extra displays, and add the slides to your presentation.
Portable Presenter is written and maintained by Mark Overmeer. Copyright (C) 2000-2002, Free Software Foundation FSF.