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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>Exiv2: Exiv2::TiffVisitor Class Reference</title>
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<a class="el" href="namespaceExiv2.html">Exiv2</a>::<a class="el" href="classExiv2_1_1TiffVisitor.html">TiffVisitor</a></div>
<h1>Exiv2::TiffVisitor Class Reference</h1><!-- doxytag: class="Exiv2::TiffVisitor" -->Abstract base class defining the interface for TIFF composite vistors (Visitor pattern).
<a href="#_details">More...</a>
<p>
<code>#include <tiffvisitor.hpp></code>
<p>
Inheritance diagram for Exiv2::TiffVisitor:<p><center><img src="classExiv2_1_1TiffVisitor__inherit__graph.png" border="0" usemap="#Exiv2_1_1TiffVisitor__inherit__map" alt="Inheritance graph"></center>
<map name="Exiv2_1_1TiffVisitor__inherit__map">
<area href="classExiv2_1_1TiffFinder.html" shape="rect" coords="5,81,123,105" alt="">
<area href="classExiv2_1_1TiffMetadataDecoder.html" shape="rect" coords="147,81,333,105" alt="">
<area href="classExiv2_1_1TiffPrinter.html" shape="rect" coords="357,81,477,105" alt="">
<area href="classExiv2_1_1TiffReader.html" shape="rect" coords="501,81,624,105" alt="">
</map>
<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center><a href="classExiv2_1_1TiffVisitor-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Creators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e04d9cbc195b65285eff5439e9e9e876"></a><!-- doxytag: member="Exiv2::TiffVisitor::TiffVisitor" ref="e04d9cbc195b65285eff5439e9e9e876" args="()" -->
</td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#e04d9cbc195b65285eff5439e9e9e876">TiffVisitor</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Default constructor. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="62133836d82afb9731d2cf72ee8f7d2f"></a><!-- doxytag: member="Exiv2::TiffVisitor::~TiffVisitor" ref="62133836d82afb9731d2cf72ee8f7d2f" args="()" -->
virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#62133836d82afb9731d2cf72ee8f7d2f">~TiffVisitor</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Virtual destructor. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Manipulators</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#34eb6f03a7596a7ab81e4dec44c018eb">setGo</a> (bool go)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Set the stop/go flag: true for go, false for stop. <a href="#34eb6f03a7596a7ab81e4dec44c018eb"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2ff552f0b1b54a7b16b8bff4581246d2"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitEntry" ref="2ff552f0b1b54a7b16b8bff4581246d2" args="(TiffEntry *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#2ff552f0b1b54a7b16b8bff4581246d2">visitEntry</a> (<a class="el" href="classExiv2_1_1TiffEntry.html">TiffEntry</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF entry. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="cbd78a56a30eb7350771780b705378f5"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitDataEntry" ref="cbd78a56a30eb7350771780b705378f5" args="(TiffDataEntry *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#cbd78a56a30eb7350771780b705378f5">visitDataEntry</a> (<a class="el" href="classExiv2_1_1TiffDataEntry.html">TiffDataEntry</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF data entry. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b7551b0fb41ec6e7d7f0cba180989f68"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitSizeEntry" ref="b7551b0fb41ec6e7d7f0cba180989f68" args="(TiffSizeEntry *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#b7551b0fb41ec6e7d7f0cba180989f68">visitSizeEntry</a> (<a class="el" href="classExiv2_1_1TiffSizeEntry.html">TiffSizeEntry</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF size entry. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6f4a388a4f940a7475a4eab08d50ce7f"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitDirectory" ref="6f4a388a4f940a7475a4eab08d50ce7f" args="(TiffDirectory *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#6f4a388a4f940a7475a4eab08d50ce7f">visitDirectory</a> (<a class="el" href="classExiv2_1_1TiffDirectory.html">TiffDirectory</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF directory. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ec91f1b3a1858e02998fa34cadb1f894"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitDirectoryNext" ref="ec91f1b3a1858e02998fa34cadb1f894" args="(TiffDirectory *object)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#ec91f1b3a1858e02998fa34cadb1f894">visitDirectoryNext</a> (<a class="el" href="classExiv2_1_1TiffDirectory.html">TiffDirectory</a> *object)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF directory, after all components and before the next entry is processed. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="368873d97063e1484514ab68f62f6f75"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitDirectoryEnd" ref="368873d97063e1484514ab68f62f6f75" args="(TiffDirectory *object)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#368873d97063e1484514ab68f62f6f75">visitDirectoryEnd</a> (<a class="el" href="classExiv2_1_1TiffDirectory.html">TiffDirectory</a> *object)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF directory, at the end of the processing. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="3fad869bac5beab83dc884504b274d19"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitSubIfd" ref="3fad869bac5beab83dc884504b274d19" args="(TiffSubIfd *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#3fad869bac5beab83dc884504b274d19">visitSubIfd</a> (<a class="el" href="classExiv2_1_1TiffSubIfd.html">TiffSubIfd</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for a TIFF sub-IFD. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2be22ab2ed01b526bda0b817d5a70840"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitMnEntry" ref="2be22ab2ed01b526bda0b817d5a70840" args="(TiffMnEntry *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#2be22ab2ed01b526bda0b817d5a70840">visitMnEntry</a> (<a class="el" href="classExiv2_1_1TiffMnEntry.html">TiffMnEntry</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for the makernote component. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7b6c62f7e435ce6a0671968f603a0263"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitIfdMakernote" ref="7b6c62f7e435ce6a0671968f603a0263" args="(TiffIfdMakernote *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#7b6c62f7e435ce6a0671968f603a0263">visitIfdMakernote</a> (<a class="el" href="classExiv2_1_1TiffIfdMakernote.html">TiffIfdMakernote</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for an IFD makernote. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="30d2fe84ad7e669d72ff93f50ad469f2"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitIfdMakernoteEnd" ref="30d2fe84ad7e669d72ff93f50ad469f2" args="(TiffIfdMakernote *object)" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#30d2fe84ad7e669d72ff93f50ad469f2">visitIfdMakernoteEnd</a> (<a class="el" href="classExiv2_1_1TiffIfdMakernote.html">TiffIfdMakernote</a> *object)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform after processing an IFD makernote. <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="51b3ace9411cf84ba52ff61c8dedd12a"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitArrayEntry" ref="51b3ace9411cf84ba52ff61c8dedd12a" args="(TiffArrayEntry *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#51b3ace9411cf84ba52ff61c8dedd12a">visitArrayEntry</a> (<a class="el" href="classExiv2_1_1TiffArrayEntry.html">TiffArrayEntry</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for an array entry (as found in Canon makernotes). <br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="fa83aa3ccbabc5160f9ffcc8145780b9"></a><!-- doxytag: member="Exiv2::TiffVisitor::visitArrayElement" ref="fa83aa3ccbabc5160f9ffcc8145780b9" args="(TiffArrayElement *object)=0" -->
virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#fa83aa3ccbabc5160f9ffcc8145780b9">visitArrayElement</a> (<a class="el" href="classExiv2_1_1TiffArrayElement.html">TiffArrayElement</a> *object)=0</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Operation to perform for an array element. <br></td></tr>
<tr><td colspan="2"><div class="groupHeader">Accessors</div></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="09c7bc62f717b219d9ff0c71efe32613"></a><!-- doxytag: member="Exiv2::TiffVisitor::go" ref="09c7bc62f717b219d9ff0c71efe32613" args="()" -->
bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classExiv2_1_1TiffVisitor.html#09c7bc62f717b219d9ff0c71efe32613">go</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Check if stop flag is clear, return true if it's clear. <br></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
Abstract base class defining the interface for TIFF composite vistors (Visitor pattern).
<p>
A concrete visitor class is used as shown in the example below. Accept() will invoke the member function corresponding to the concrete type of each component in the composite.<p>
<div class="fragment"><pre class="fragment"> <span class="keywordtype">void</span> visitorExample(<a class="code" href="classExiv2_1_1TiffComponent.html">Exiv2::TiffComponent</a>* tiffComponent, <a class="code" href="classExiv2_1_1TiffVisitor.html">Exiv2::TiffVisitor</a>& visitor)
{
tiffComponent-><a class="code" href="classExiv2_1_1TiffComponent.html#0572488189b0c63452f3f1ef5ef07f7b">accept</a>(visitor);
}
</pre></div>
<p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="34eb6f03a7596a7ab81e4dec44c018eb"></a><!-- doxytag: member="Exiv2::TiffVisitor::setGo" ref="34eb6f03a7596a7ab81e4dec44c018eb" args="(bool go)" --><p>
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<td class="md" nowrap valign="top">void Exiv2::TiffVisitor::setGo </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname1" valign="top" nowrap> <em>go</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [inline]</code></td>
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</td>
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<p>
Set the stop/go flag: true for go, false for stop.
<p>
This mechanism can be used by concrete visitors to signal certain events. For example, <a class="el" href="classExiv2_1_1TiffFinder.html">TiffFinder</a> sets the stop flag as soon as it finds the correct component to signal to that the search should be stopped. <a class="el" href="classExiv2_1_1TiffReader.html">TiffReader</a> uses it to signal problems reading a makernote. As the flag doesn't carry any information on the type of event which triggered it, it is for each visitor to establish and adhere to conventions about its meaning. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="tiffvisitor_8hpp.html">tiffvisitor.hpp</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Fri Jun 2 23:55:33 2006 for Exiv2 by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
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