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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment">// Copyright 2005-2007 Adobe Systems Incorporated</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment">//</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#ifndef BOOST_GIL_PIXEL_ITERATOR_ADAPTOR_HPP</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define BOOST_GIL_PIXEL_ITERATOR_ADAPTOR_HPP</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &lt;boost/gil/concepts.hpp&gt;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;boost/gil/pixel_iterator.hpp&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &lt;boost/iterator/iterator_facade.hpp&gt;</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &lt;iterator&gt;</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="keyword">namespace </span>boost { <span class="keyword">namespace </span>gil {</div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator,    <span class="comment">// Models Iterator</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;          <span class="keyword">typename</span> DFn&gt;  <span class="comment">// Models Returns the result of dereferencing a given iterator of type Iterator</span></div><div class="line"><a name="l00029"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">   29</a></span>&#160;<span class="keyword">class </span><a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a> : <span class="keyword">public</span> iterator_adaptor&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt;,</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;                                                             Iterator,</div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;                                                             typename DFn::value_type,</div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;                                                             typename std::iterator_traits&lt;Iterator&gt;::iterator_category,</div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;                                                             typename DFn::reference,</div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;                                                             use_default&gt; {</div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;    DFn _deref_fn;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="keyword">public</span>:</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;    <span class="keyword">using</span> parent_t = iterator_adaptor&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt;,</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;                                    Iterator,</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;                                    <span class="keyword">typename</span> DFn::value_type,</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;                                    <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::iterator_category,</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;                                    <span class="keyword">typename</span> DFn::reference,</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;                                    use_default&gt;;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;    <span class="keyword">using</span> reference = <span class="keyword">typename</span> DFn::result_type;</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;    <span class="keyword">using</span> difference_type = <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    <span class="keyword">using</span> dereference_fn = DFn;</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>() {}</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator1&gt;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator1,DFn&gt;</a>&amp; dit) : parent_t(dit.base()), _deref_fn(dit._deref_fn) {}</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>(Iterator it, DFn deref_fn=DFn()) : parent_t(it), _deref_fn(deref_fn) {}</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator1, <span class="keyword">typename</span> DFn1&gt;</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator1,DFn1&gt;</a>&amp; it) : parent_t(it.base()), _deref_fn(it._deref_fn) {}</div><div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801">   55</a></span>&#160;    reference <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801">operator[]</a>(difference_type d)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *(*<span class="keyword">this</span>+d);}</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    <span class="comment">// although iterator_adaptor defines these, the default implementation computes distance and compares for zero.</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    <span class="comment">// it is often faster to just apply the relation operator to the base</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="keywordtype">bool</span>    operator&gt; (<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&gt; p.base_reference(); }</div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="keywordtype">bool</span>    operator&lt; (<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&lt; p.base_reference(); }</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="keywordtype">bool</span>    operator&gt;=(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&gt;=p.base_reference(); }</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordtype">bool</span>    operator&lt;=(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()&lt;=p.base_reference(); }</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordtype">bool</span>    operator==(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()==p.base_reference(); }</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;    <span class="keywordtype">bool</span>    operator!=(<span class="keyword">const</span> dereference_iterator_adaptor&amp; p)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> this-&gt;base_reference()!=p.base_reference(); }</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;</div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;    Iterator&amp; base()              { <span class="keywordflow">return</span> this-&gt;base_reference(); }</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;    <span class="keyword">const</span> Iterator&amp; base()<span class="keyword"> const  </span>{ <span class="keywordflow">return</span> this-&gt;base_reference(); }</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;    <span class="keyword">const</span> DFn&amp; deref_fn()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _deref_fn; }</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;<span class="keyword">private</span>:</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;    <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator1, <span class="keyword">typename</span> DFn1&gt;</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <span class="keyword">friend</span> <span class="keyword">class </span>dereference_iterator_adaptor;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;    <span class="keyword">friend</span> <span class="keyword">class </span>boost::iterator_core_access;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    reference dereference()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _deref_fn(*(this-&gt;base_reference())); }</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;};</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="keyword">struct </span>const_iterator_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; {</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <span class="keyword">using</span> type = dereference_iterator_adaptor&lt;typename const_iterator_type&lt;I&gt;::type,<span class="keyword">typename</span> DFn::const_t&gt;;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;};</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="keyword">struct </span>iterator_is_mutable&lt;dereference_iterator_adaptor&lt;I, DFn&gt;&gt;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;    : std::integral_constant&lt;bool, DFn::is_mutable&gt;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;{};</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="keyword">struct </span>is_iterator_adaptor&lt;dereference_iterator_adaptor&lt;I, DFn&gt;&gt; : std::true_type {};</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;<span class="keyword">struct </span>iterator_adaptor_get_base&lt;dereference_iterator_adaptor&lt;I, DFn&gt;&gt;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;{</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keyword">using</span> type = I;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;};</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn, <span class="keyword">typename</span> NewBaseIterator&gt;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;<span class="keyword">struct </span>iterator_adaptor_rebind&lt;dereference_iterator_adaptor&lt;I,DFn&gt;,NewBaseIterator&gt; {</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;    <span class="keyword">using</span> type = dereference_iterator_adaptor&lt;NewBaseIterator,DFn&gt;;</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;};</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;<span class="comment">//  PixelBasedConcept</span></div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="keyword">struct </span>color_space_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> color_space_type&lt;typename DFn::value_type&gt; {};</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;<span class="keyword">struct </span>channel_mapping_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> channel_mapping_type&lt;typename DFn::value_type&gt; {};</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;<span class="keyword">struct </span>is_planar&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> is_planar&lt;typename DFn::value_type&gt; {};</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> I, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;<span class="keyword">struct </span>channel_type&lt;dereference_iterator_adaptor&lt;I,DFn&gt; &gt; : <span class="keyword">public</span> channel_type&lt;typename DFn::value_type&gt; {};</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment">//  MemoryBasedIteratorConcept</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;<span class="keyword">struct </span>byte_to_memunit&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt; &gt; : <span class="keyword">public</span> byte_to_memunit&lt;Iterator&gt; {};</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="keyword">inline</span> <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;memunit_step(<span class="keyword">const</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p) {</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    <span class="keywordflow">return</span> memunit_step(p.base());</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;}</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;<span class="keyword">inline</span> <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;memunit_distance(<span class="keyword">const</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p1,</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;              <span class="keyword">const</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p2) {</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;    <span class="keywordflow">return</span> memunit_distance(p1.base(),p2.base());</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;}</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">void</span> memunit_advance(dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p,</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                         <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type diff) {</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;    memunit_advance(p.base(), diff);</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;}</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="keyword">inline</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;memunit_advanced(<span class="keyword">const</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p,</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;              <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type diff) {</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;    <span class="keywordflow">return</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;(memunit_advanced(p.base(), diff), p.deref_fn());</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;}</div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;</div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;</div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="keyword">inline</span></div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;<span class="keyword">typename</span> std::iterator_traits&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt; &gt;::reference</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;memunit_advanced_ref(<span class="keyword">const</span> dereference_iterator_adaptor&lt;Iterator,DFn&gt;&amp; p,</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;                  <span class="keyword">typename</span> std::iterator_traits&lt;Iterator&gt;::difference_type diff) {</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;    <span class="keywordflow">return</span> *memunit_advanced(p, diff);</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;}</div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="comment">//  HasDynamicXStepTypeConcept</span></div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;<span class="comment"></span></div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> DFn&gt;</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;<span class="keyword">struct </span>dynamic_x_step_type&lt;dereference_iterator_adaptor&lt;Iterator,DFn&gt; &gt; {</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;    <span class="keyword">using</span> type = dereference_iterator_adaptor&lt;typename dynamic_x_step_type&lt;Iterator&gt;::type,DFn&gt;;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;};</div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;</div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> Deref&gt;</div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="keyword">struct </span>iterator_add_deref {</div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;    GIL_CLASS_REQUIRE(Deref, boost::gil, PixelDereferenceAdaptorConcept)</div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    <span class="keyword">using</span> type = dereference_iterator_adaptor&lt;Iterator, Deref&gt;;</div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;    <span class="keyword">static</span> type make(<span class="keyword">const</span> Iterator&amp; it, <span class="keyword">const</span> Deref&amp; d) { <span class="keywordflow">return</span> type(it,d); }</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;};</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;</div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="keyword">template</span> &lt;<span class="keyword">typename</span> Iterator, <span class="keyword">typename</span> PREV_DEREF, <span class="keyword">typename</span> Deref&gt;</div><div class="line"><a name="l00184"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1iterator__add__deref_3_01dereference__iterator__adaptor_3_01_iterator_00_0927b7f3fa453e9b4decea8a0c8e52f27.html">  184</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structboost_1_1gil_1_1iterator__add__deref.html">iterator_add_deref</a>&lt;<a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor</a>&lt;Iterator, PREV_DEREF&gt;,Deref&gt; {</div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment">//    GIL_CLASS_REQUIRE(Deref, boost::gil, PixelDereferenceAdaptorConcept)</span></div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;    <span class="keyword">using</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a> = <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator, deref_compose&lt;Deref,PREV_DEREF&gt;</a>&gt;;</div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;    <span class="keyword">static</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a> make(<span class="keyword">const</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">dereference_iterator_adaptor&lt;Iterator, PREV_DEREF&gt;</a>&amp; it, <span class="keyword">const</span> Deref&amp; d) {</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;        <span class="keywordflow">return</span> <a class="code" href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">type</a>(it.base(),<a class="code" href="classboost_1_1gil_1_1deref__compose.html">deref_compose&lt;Deref,PREV_DEREF&gt;</a>(d,it.deref_fn()));</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;    }</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;};</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;</div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;}}  <span class="comment">// namespace boost::gil</span></div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;</div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="preprocessor">#endif</span></div><div class="ttc" id="structboost_1_1gil_1_1iterator__add__deref_html"><div class="ttname"><a href="structboost_1_1gil_1_1iterator__add__deref.html">boost::gil::iterator_add_deref</a></div><div class="ttdoc">Returns the type (and creates an instance) of an iterator that invokes the given dereference adaptor ...</div><div class="ttdef"><b>Definition:</b> locator.hpp:27</div></div>
  51 <div class="ttc" id="classboost_1_1gil_1_1dereference__iterator__adaptor_html"><div class="ttname"><a href="classboost_1_1gil_1_1dereference__iterator__adaptor.html">boost::gil::dereference_iterator_adaptor</a></div><div class="ttdoc">An adaptor over an existing iterator that provides for custom filter on dereferencing the object....</div><div class="ttdef"><b>Definition:</b> pixel_iterator_adaptor.hpp:29</div></div>
  52 <div class="ttc" id="classboost_1_1gil_1_1deref__compose_html"><div class="ttname"><a href="classboost_1_1gil_1_1deref__compose.html">boost::gil::deref_compose</a></div><div class="ttdoc">Composes two dereference function objects. Similar to std::unary_compose but needs to pull some alias...</div><div class="ttdef"><b>Definition:</b> utilities.hpp:121</div></div>
  53 <div class="ttc" id="classboost_1_1gil_1_1dereference__iterator__adaptor_html_a16d8e6857dd561244ca73764f2b94801"><div class="ttname"><a href="classboost_1_1gil_1_1dereference__iterator__adaptor.html#a16d8e6857dd561244ca73764f2b94801">boost::gil::dereference_iterator_adaptor::operator[]</a></div><div class="ttdeci">reference operator[](difference_type d) const</div><div class="ttdef"><b>Definition:</b> pixel_iterator_adaptor.hpp:55</div></div>
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