PDFlib 8 Windows COM/.NET Tutorial

esult = p.fit_textflow(tflow, 0, 0, 50, 70, "fitmethod=auto");
if (!result.equals("_stop"))
{ /* ... */ }
/* create URI action */
optlist = "url={http://www.kraxi.com}";
act = p.create_action("URI", optlist);
/* create Link annotation on matchbox "kraxi" */
optlist = "action={activate " + act + "} linewidth=0 usematchbox={kraxi}";
p.create_annotation(0, 0, 0, 0, "Link", optlist);
Even if the text Kraxi Systems, Inc. spans several lines the appropriate number of link annotations
will be created automatically with a single call to create_annotation( ). The result
in shown in Figure 8.42.
For information about
Giant Wing Paper
Planes see the Web
site of Kraxi Systems,
Inc.
Fig. 8.42
Add Weblinks to parts of a Textflow
8.4.3 Matchboxes and Images
Adding a Web link to an image. To add a Web link to the area covered by an image the
image matchbox can be used. The code is similar to »Adding a Web link to the Textflow
matchbox«, page 244, above. However, instead of placing the Textflow, fit the image using
the following option list:
String optlist = "boxsize={130 130} fitmethod=meet matchbox={name=kraxi}";
p.fit_image(image, 10, 10, optlist);
Cookbook A full code sample can be found in the Cookbook topic interactive/link_annotations.
Drawing a frame around an image. In this example we want to use the image matchbox
to draw a frame around the image. We completely fit the image into the supplied
box while maintaining its proportions using fitmethod=meet. We use the matchbox option
with the borderwidth suboption to draw a thick border around the image. The
strokecolor suboption determines the border color, and the linecap and linejoin suboptions
are used to round the corners.
Cookbook A full code sample can be found in the Cookbook topic images/frame_around_image.
The matchbox is always drawn before the image which means it would be partially hidden
by the image. To avoid this we use the offset suboptions with 50 percent of the border
width to enlarge the frame beyond the area covered by the image. Alternatively, we
could increase the border width accordingly. Figure 8.43 shows the option list used with
fit_image( ) to draw the frame.
244 Chapter 8: Text and Table Formatting (Edition for COM, .NET, and REALbasic)