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listing4.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
<html>
<head>
<!-- BEGIN META TAG INFO -->
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<link rel="home" href="http://developer.apple.com/">
<link rel="find" href="http://developer.apple.com/search/">
<link rel="stylesheet" type="text/css" href="../../documentation/css/adcstyle.css" title="fonts">
<script language="JavaScript" src="../../documentation/js/adc.js" type="text/javascript"></script>
<!-- END META TAG INFO -->
<!-- BEGIN TITLE -->
<title>Link Snoop - /LinkData.m</title>
<!-- END TITLE -->
<script language="JavaScript">
function JumpToNewPage() {
window.location=document.scpopupmenu.gotop.value;
return true;
}
</script>
</head>
<!-- BEGIN BODY OPEN -->
<body>
<!--END BODY OPEN -->
<!-- START CENTER OPEN -->
<center>
<!-- END CENTER OPEN -->
<!-- BEGIN LOGO AND SEARCH -->
<!--#include virtual="/includes/adcnavbar"-->
<!-- END LOGO AND SEARCH -->
<!-- START BREADCRUMB -->
<div id="breadcrumb">
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td scope="row"><img width="340" height="10" src="images/1dot.gif" alt=""></td>
<td><img width="340" height="10" src="images/1dot.gif" alt=""></td>
</tr>
<tr valign="middle">
<td align="left" colspan="2">
<a href="http://developer.apple.com/">ADC Home</a> > <a href="../../referencelibrary/index.html">Reference Library</a> > <a href="../../samplecode/index.html">Sample Code</a> > <a href="../../samplecode/Cocoa/index.html">Cocoa</a> > <a href="../../samplecode/Cocoa/idxGraphicsImaging-date.html">Graphics & Imaging</a> > <A HREF="javascript:location.replace('index.html');">Link Snoop</A> >
</td>
</tr>
<tr>
<td colspan="2" scope="row"><img width="680" height="35" src="images/1dot.gif" alt=""></td>
</tr>
</table>
</div>
<!-- END BREADCRUMB -->
<!-- START MAIN CONTENT -->
<!-- START TITLE GRAPHIC AND INTRO-->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td><h1><div id="pagehead">Link Snoop</div></h1></td>
</tr>
</table>
<!-- END TITLE GRAPHIC AND INTRO -->
<!-- START WIDE COLUMN -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr align="left" valign="top">
<td id="scdetails">
<h2>/LinkData.m</h2>
<form name="scpopupmenu" onSubmit="return false;" method=post>
<p><strong>View Source Code:</strong>
<select name="gotop" onChange="JumpToNewPage();" style="width:340px"><option selected value="ingnore">Select File</option>
<option value="listing1.html">/Controller.h</option>
<option value="listing2.html">/Controller.m</option>
<option value="listing3.html">/LinkData.h</option>
<option value="listing4.html">/LinkData.m</option>
<option value="listing5.html">/main.m</option>
<option value="listing6.html">/MyDocument.h</option>
<option value="listing7.html">/MyDocument.m</option>
<option value="listing8.html">/MyPDFView.h</option>
<option value="listing9.html">/MyPDFView.m</option>
<option value="listing10.html">/MyWindowController.h</option>
<option value="listing11.html">/MyWindowController.m</option></select>
</p>
</form>
<p><strong><a href="LinkSnoop.zip">Download Sample</a></strong> (“LinkSnoop.zip”, 77.5K)<BR>
<strong><a href="LinkSnoop.dmg">Download Sample</a></strong> (“LinkSnoop.dmg”, 137.9K)</p>
<!--
<p><strong><a href="#">Download Sample</a></strong> (“filename.sit”, 500K)</p>
-->
</td>
</tr>
<tr>
<td scope="row"><img width="680" height="10" src="images/1dot.gif" alt=""><br>
<img height="1" width="680" src="images/1dot_919699.gif" alt=""><br>
<img width="680" height="20" src="images/1dot.gif" alt=""></td>
</tr>
<tr>
<td scope="row">
<!--googleon: index -->
<pre class="sourcecodebox">// ======================================================================================================================
// LinkData.m
// ======================================================================================================================
#import "LinkData.h"
@implementation LinkData
// ============================================================================================================= LinkData
// --------------------------------------------------------------------------------------------------- initWithAnnotation
- (id) initWithAnnotation: (PDFAnnotation *) annotation
{
// Super.
[super init];
// Simple pointer (no retain or release).
_annotation = annotation;
return self;
}
// -------------------------------------------------------------------------------------------------------------- dealloc
- (void) dealloc
{
// Instance vars.
[_text release];
// Call super.
[super dealloc];
}
// ----------------------------------------------------------------------------------------------------------- annotation
- (PDFAnnotation *) annotation
{
return _annotation;
}
// ----------------------------------------------------------------------------------------------------------------- text
- (NSString *) text
{
// Evaluate lazily and retain.
if (_text == NULL)
{
NSString *boundedText;
// Try to get the string enclosed by the annotation bounds - remove linefeeds and the like.
boundedText = [[[self selection] string] stringByTrimmingCharactersInSet: [NSCharacterSet controlCharacterSet]];
// If we got back nothing, then we presume there is no text bounded by the link - other wise return the text.
if (boundedText == NULL)
_text = [[NSString stringWithString: @"(no text bounded)"] retain];
else
_text = [[NSString stringWithString: boundedText] retain];
}
return _text;
}
// ------------------------------------------------------------------------------------------------------------ selection
- (PDFSelection *) selection
{
// Create a PDFSelection using the link bounds (padded out an arbitrary amount so that text is more likely...
// to fall within the selection/annotation bounds.
return [[_annotation page] selectionForRect: NSInsetRect([_annotation bounds], -4.0, -4.0)];
}
// ------------------------------------------------------------------------------------------------------------ selection
- (PDFDestination *) destination
{
PDFPage *page;
NSRect bounds;
PDFDestination *dest = NULL;
// Somehwat complicated ... we want to represent a point (for the destination) that is above the top-left...
// corner of the annotation bounds. If all PDF's were non-rotated this would be trivial. Though unusual, here...
// we account for rotations of 90, 180 and 270 as well.
page = [_annotation page];
bounds = [_annotation bounds];
switch ([page rotation])
{
case 0:
dest = [[PDFDestination alloc] initWithPage: page atPoint: NSMakePoint(NSMinX(bounds), NSMaxY(bounds) + 8.0)];
break;
case 90:
dest = [[PDFDestination alloc] initWithPage: page atPoint: NSMakePoint(NSMaxX(bounds) + 8.0, NSMaxY(bounds))];
break;
case 180:
dest = [[PDFDestination alloc] initWithPage: page atPoint: NSMakePoint(NSMaxX(bounds), NSMinY(bounds) - 8.0)];
break;
case 270:
dest = [[PDFDestination alloc] initWithPage: page atPoint: NSMakePoint(NSMinX(bounds) - 8.0, NSMinY(bounds))];
break;
}
return dest;
}
@end
</pre>
<!--googleoff: index -->
</td>
</tr>
</table>
<!-- END WIDE COLUMN -->
<!-- END MAIN CONTENT -->
<table width="680" border="0" cellpadding="0" cellspacing="0">
<tr>
<td><div style="width: 100%; height: 1px; background-color: #919699; margin-top: 5px; margin-bottom: 15px"></div></td>
</tr>
<tr>
<td align="center"><br/>
<table border="0" cellpadding="0" cellspacing="0" class="graybox">
<tr>
<th>Did this document help you?</th>
</tr>
<tr>
<td>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=1&url=/samplecode/LinkSnoop/listing4.html%3Fid%3DDTS10003593-1.0&media=dvd" target=_new>Yes</a>: Tell us what works for you.</div>
<div style="margin-bottom: 8px"><a href="http://developer.apple.com/feedback/?v=2&url=/samplecode/LinkSnoop/listing4.html%3Fid%3DDTS10003593-1.0&media=dvd" target=_new>It’s good, but:</a> Report typos, inaccuracies, and so forth.</div>
<div><a href="http://developer.apple.com/feedback/?v=3&url=/samplecode/LinkSnoop/listing4.html%3Fid%3DDTS10003593-1.0&media=dvd" target=_new>It wasn’t helpful</a>: Tell us what would have helped.</div>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-- START BOTTOM APPLE NAVIGATION -->
<!--#include virtual="/includes/footer"-->
<!-- END BOTTOM APPLE NAVIGATION -->
<!-- START CENTER CLOSE -->
</center>
<!-- END CENTER CLOSE -->
</body>
</html>