PDFlib 8 Windows COM/.NET Tutorial

Fig. 8.43 Using the image matchbox to draw a frame around the image
Generated output Option list for fit_image( )
boxsize={60 60} position={center} fitmethod=meet
matchbox={name=kraxi borderwidth=4 offsetleft=-2 offsetright=2
offsetbottom=-2 offsettop=2 linecap=round linejoin=round
strokecolor {rgb 0.0 0.3 0.3}}
Align text at an image. The following code fragment shows how to align vertical text
at the right margin of an image. The image is proportionally fit into the supplied box
with a fit method of meet. The actual coordinates of the fitbox are retrieved with info_
matchbox( ) and a vertical text line is placed relative to the lower right (x2, y2) corner of
the fitbox. The border of the matchbox is stroked (see Figure 8.44).
Cookbook A full code sample can be found in the Cookbook topic images/align_text_at_image.
/* use this option list to load and fit the image */
String optlist = "boxsize={300 200} position={center} fitmethod=meet " +
"matchbox={name=giantwing borderwidth=3 strokecolor={rgb 0.85 0.83 0.85}}";
/* load and fit the image */
...
/* retrieve the coordinates of the lower right (second) matchbox corner */
if ((int) p.info_matchbox("giantwing", 1, "exists") == 1)
{
x1 = p.info_matchbox("giantwing", 1, "x2");
y1 = p.info_matchbox("giantwing", 1, "y2");
}
/* start the text line at that corner with a small distance of 2 */
p.fit_textline("Foto: Kraxi", x2+2, y2+2, "font=" + font + " fontsize=8 orientate=west");
Fig. 8.44 Use the coordinates of the image matchbox to fit a text line
Generated output
Generation steps
Foto: Kraxi
(x2, y2)
Step 1: Fit image with matchbox
Step 2: Retrieve matchbox info for coordinates (x2, y2)
Step 3: Fit text line starting at retrieved coordinates (x2, y2) with option
orientate=west
8.4 Matchboxes 245