PDFlib 8 Windows COM/.NET Tutorial

Fine-tuning the vertical alignment of cell contents. When we vertically center contents
of various types in the table cells, they will be positioned with varying distance
from the borders. In Figure 8.30a, the four text line cells have been placed with the following
option list:
optlist = "fittextline={position={left center} font=" + font +
" fontsize=8} colwidth=80 margin=4";
The Textflow cell is added without any special options. Since we vertically centered the
text lines, the Benefit line will move down with the height of the Textflow.
Fig. 8.30 Aligning text lines and Textflow in table cells
Generated output
Our Paper Planes
a)
Material
Benefit
Offset print paper 220g/sqm
It is amazingly robust and can
even do aerobatics. But it is
best suited to gliding.
b)
Our Paper Planes
Material
Benefit
Offset print paper 220g/sqm
It is amazingly robust and can
even do aerobatics. But it is
best suited to gliding.
As shown in Figure 8.30b, we want all cell contents to have the same vertical distance
from the cell borders regardless of whether they are Textflows or text lines. To accomplish
this we first prepare the option list for the text lines. We define a fixed row height
of 14 points, and the position of the text line to be on the top left with a margin of 4
points.
The fontsize=8 option which we supplied before doesn’t exactly represent the letter
height but adds some space below and above. However, the height of an uppercase letter
is exactly represented by the capheight value of the font. For this reason we use
fontsize={capheight=6} which will approximately result in a font size of 8 points and
(along with margin=4), will sum up to an overall height of 14 points corresponding to the
rowheight option. The complete option list of add_table_cell( ) for our text line cells looks
as follows:
/* option list for the text line cells */
optlist = "fittextline={position={left top} font=" + font +
" fontsize={capheight=6}} rowheight=14 colwidth=80 margin=4";
To add the Textflow we use fontsize={capheight=6} which will approximately result in a
font size of 8 points and (along with margin=4), will sum up to an overall height of 14
points as for the text lines above.
/* option list for adding the Textflow */
optlist = "font=" + font + " fontsize={capheight=6} leading=110%";
230 Chapter 8: Text and Table Formatting (Edition for COM, .NET, and REALbasic)