Text
Text is the heart of a PDF file. As such, there are many options for changing the appearance and layout of text. In this section, we’ll discuss the coordinate system used in PDF documents, functions for inserting text and changing text attributes, and font usage.
Coordinates
The origin ((0,0)
) in a PDF
document with the FPDF library is in the top-left corner of the
defined page. All of the measurements are specified in points,
millimeters, inches, or centimeters. A point (the default) is equal to
1/72 of an inch, or 0.35 mm. In the following code (Example 10-2) we change the
defaults of the page dimensions to inches with the FPDF( )
class instantiation-constructor
method. The other options with this call are the orientation of the
page (Portrait or Landscape), and the page size (typically Legal or
Letter). The full options of this instantiation are shown in the
following table:
FPDF ( ) constructor parameters | Parameter options |
Orientation |
|
Units of Measurement |
|
Page Size | |
| |
A5 | |
A3 | |
A4- or a customizable size (see FPDF documentation) |
Also in Example
10-2, we use the ln( )
method call to manage what line of the page we are on. The ln( )
method can take an optional argument instructing it how many units to move (units being the defined unit of measurement in the constructor call). In our case we have defined the page to be in inches, so we are moving down in inch measurements. ...
Get Programming PHP, 2nd Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.