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<div class="title">Canvas.hpp</div> </div>
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<a href="Canvas_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* This file is part of FlowCanvas.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (C) 2007-2009 David Robillard <http://drobilla.net></span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * FlowCanvas is free software; you can redistribute it and/or modify it under the</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * terms of the GNU General Public License as published by the Free Software</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * Foundation; either version 2 of the License, or (at your option) any later</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * version.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * FlowCanvas is distributed in the hope that it will be useful, but WITHOUT ANY</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * You should have received a copy of the GNU General Public License along</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * with this program; if not, write to the Free Software Foundation, Inc.,</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifndef FLOWCANVAS_CANVAS_HPP</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor"></span><span class="preprocessor">#define FLOWCANVAS_CANVAS_HPP</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <list></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <boost/enable_shared_from_this.hpp></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include <boost/utility.hpp></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <libgnomecanvasmm.h></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="Connection_8hpp.html">flowcanvas/Connection.hpp</a>"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "<a class="code" href="Item_8hpp.html">flowcanvas/Item.hpp</a>"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="Module_8hpp.html">flowcanvas/Module.hpp</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"><a class="code" href="namespaceFlowCanvas.html"> 38</a></span> <span class="keyword">namespace </span>FlowCanvas {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">class </span><a class="code" href="classFlowCanvas_1_1Port.html" title="A port on a Module.">Port</a>;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">class </span><a class="code" href="classFlowCanvas_1_1Module.html" title="A named block (possibly) containing input and output ports.">Module</a>;</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">class </span>GVNodes;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html"> 58</a></span> <span class="keyword">class </span><a class="code" href="classFlowCanvas_1_1Canvas.html" title="The 'master' canvas widget which contains all other objects.">Canvas</a> : boost::noncopyable</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  , <span class="keyword">public</span> boost::enable_shared_from_this<Canvas></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  , <span class="keyword">public</span> Gnome::Canvas::CanvasAA</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="classFlowCanvas_1_1Canvas.html#adb6d329147bd6fa21715d9015b194878">Canvas</a>(<span class="keywordtype">double</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a1c9037faa9d9cdf17a517156b917fdb6">width</a>, <span class="keywordtype">double</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a5344c073d3efa7099dc6310344aba6d1">height</a>);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">virtual</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#adb89ef7b5107696429f2058890e3fafc">~Canvas</a>();</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#aae22e84b6cb70a62e85945b1a9b0d8c1">destroy</a>();</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a9f6f42b50ee32f2f7386f030950c1d4b">add_item</a>(boost::shared_ptr<Item> i);</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordtype">bool</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#addb7bc9d24f7a70c5032ff17064c1abd">remove_item</a>(boost::shared_ptr<Item> i);</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  boost::shared_ptr<Connection></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="classFlowCanvas_1_1Canvas.html#a6f2f92b5e15557e90207a92ed5eed700">get_connection</a>(boost::shared_ptr<Connectable> tail,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  boost::shared_ptr<Connectable> head) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">bool</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a8da18cae326c944e45abecf46d5c5463">add_connection</a>(boost::shared_ptr<Connectable> tail,</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  boost::shared_ptr<Connectable> head,</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  uint32_t color);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordtype">bool</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a8da18cae326c944e45abecf46d5c5463">add_connection</a>(boost::shared_ptr<Connection> connection);</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  boost::shared_ptr<Connection> <a class="code" href="classFlowCanvas_1_1Canvas.html#a899f3eb2b839759cb63a6bec8d230b51">remove_connection</a>(boost::shared_ptr<Connectable> tail,</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  boost::shared_ptr<Connectable> head);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#ac2967d8ce851ec3c390821b31d6736dc">set_default_placement</a>(boost::shared_ptr<Module> m);</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#ad7580ac84131228bfec5770a476e853b">clear_selection</a>();</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#aa8a0963dd933af64ae6ab97d44bc55c8">select_item</a>(boost::shared_ptr<Item> item);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a8365cb46d22f3a240415d5a3536ca984">unselect_ports</a>();</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#af4cd3c2aad497174e722acb31cb47964">unselect_item</a>(boost::shared_ptr<Item> item);</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a7b834d0b6acbdf07c1951b4e027057f0">unselect_connection</a>(<a class="code" href="classFlowCanvas_1_1Connection.html" title="A connection (line) between two canvas objects.">Connection</a>* c);</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> </div>
<div class="line"><a name="l00092"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a390de2dc3ac251bfae01bc2fe6ec9ba3"> 92</a></span>  <a class="code" href="namespaceFlowCanvas.html#ab4c39f25b89c40708f2478a262fa4726">ItemList</a>& <a class="code" href="classFlowCanvas_1_1Canvas.html#a390de2dc3ac251bfae01bc2fe6ec9ba3">items</a>() { <span class="keywordflow">return</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#ac1f899d52cb5081609fb4f6f40916223" title="All items on this canvas.">_items</a>; }</div>
<div class="line"><a name="l00093"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a44fff730c57afe5ab93eee68d6d8c87b"> 93</a></span>  <a class="code" href="namespaceFlowCanvas.html#ab4c39f25b89c40708f2478a262fa4726">ItemList</a>& <a class="code" href="classFlowCanvas_1_1Canvas.html#a44fff730c57afe5ab93eee68d6d8c87b">selected_items</a>() { <span class="keywordflow">return</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#ad6b14aca9902a4a58d6da522864088be" title="All currently selected modules.">_selected_items</a>; }</div>
<div class="line"><a name="l00094"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#aacfaeeecab89658eed7a8a787daaee70"> 94</a></span>  <a class="code" href="namespaceFlowCanvas.html#a95ded2c688bc4a98564a47ebb93a8c73">ConnectionList</a>& <a class="code" href="classFlowCanvas_1_1Canvas.html#aacfaeeecab89658eed7a8a787daaee70">connections</a>() { <span class="keywordflow">return</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a4879659380dc9a174f1fd0ae047d8b73" title="All connections on this canvas.">_connections</a>; }</div>
<div class="line"><a name="l00095"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a539a767af30b45beb29f7fac6085d480"> 95</a></span>  <a class="code" href="namespaceFlowCanvas.html#a95ded2c688bc4a98564a47ebb93a8c73">ConnectionList</a>& <a class="code" href="classFlowCanvas_1_1Canvas.html#a539a767af30b45beb29f7fac6085d480">selected_connections</a>() { <span class="keywordflow">return</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a6f910a0f700b81bd63eb48319c5044ae" title="All currently selected connections.">_selected_connections</a>; }</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a6988d81b0db8d62ec67ebcfbaf687095">lock</a>(<span class="keywordtype">bool</span> l);</div>
<div class="line"><a name="l00098"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a0d6cbfbec25d6d871aa552784533ac26"> 98</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a0d6cbfbec25d6d871aa552784533ac26">locked</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _locked; }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> </div>
<div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#ad70fffade471e1c2d9923fd3ffac6fe7"> 100</a></span>  <span class="keywordtype">double</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#ad70fffade471e1c2d9923fd3ffac6fe7">get_zoom</a>() { <span class="keywordflow">return</span> _zoom; }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a6c3dd94b67c37e688e6759d3bd805385">set_zoom</a>(<span class="keywordtype">double</span> pix_per_unit);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#adc99561da3f9885d32ce1fc46dbd1c51">zoom_full</a>();</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a3a107569d9a2bbfb38df6e90bd178b04">render_to_dot</a>(<span class="keyword">const</span> std::string& filename);</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#aec42e5149e4f738c095ffda1eb09e4e4">arrange</a>(<span class="keywordtype">bool</span> use_length_hints=<span class="keyword">false</span>, <span class="keywordtype">bool</span> center=<span class="keyword">true</span>);</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#abf4e2624cc5aaa6e3555f2bc1fee3e79">move_contents_to</a>(<span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y);</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a1c9037faa9d9cdf17a517156b917fdb6"> 109</a></span>  <span class="keywordtype">double</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a1c9037faa9d9cdf17a517156b917fdb6">width</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _width; }</div>
<div class="line"><a name="l00110"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a5344c073d3efa7099dc6310344aba6d1"> 110</a></span>  <span class="keywordtype">double</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a5344c073d3efa7099dc6310344aba6d1">height</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _height; }</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#afa99a58b37ec3060f0ee22ce18a1cc7f">resize</a>(<span class="keywordtype">double</span> width, <span class="keywordtype">double</span> height);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a89550a9a43e5eebb7053ad56387d10e5">resize_all_items</a>();</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a1ab1ecd92047653a758c1b0322d4ccc4">scroll_to_center</a>();</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00117"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1"> 117</a></span>  <span class="keyword">enum</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1">FlowDirection</a> {</div>
<div class="line"><a name="l00118"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1ac2d244ef156d5dd7df1cb1eafc8a5ca8"> 118</a></span>  <a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1ac2d244ef156d5dd7df1cb1eafc8a5ca8">HORIZONTAL</a>,</div>
<div class="line"><a name="l00119"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1a81696b43e13610f7f178760722d326d2"> 119</a></span>  <a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1a81696b43e13610f7f178760722d326d2">VERTICAL</a></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  };</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a34a617bf11e26323aea49ce99422dd19"> 122</a></span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a34a617bf11e26323aea49ce99422dd19">set_direction</a>(<a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1">FlowDirection</a> d) { _direction = d; }</div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#afb2bf401066616f85384acfa4ebf51b4"> 123</a></span>  <a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1">FlowDirection</a> <a class="code" href="classFlowCanvas_1_1Canvas.html#afb2bf401066616f85384acfa4ebf51b4">direction</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> _direction; }</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a716ce9815b2be3afb9314b7a14364340"> 127</a></span>  ArtVpathDash* <a class="code" href="classFlowCanvas_1_1Canvas.html#a716ce9815b2be3afb9314b7a14364340" title="Dash applied to selected items.">select_dash</a>() { <span class="keywordflow">return</span> _select_dash; }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a2265d7b989dfe12691aecdc53d5f7938"> 130</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a2265d7b989dfe12691aecdc53d5f7938" title="Make a connection.">connect</a>(boost::shared_ptr<Connectable> <span class="comment">/*tail*/</span>,</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  boost::shared_ptr<Connectable> <span class="comment">/*head*/</span>) {}</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a560d18c5919e4d2353a151335c82151a"> 134</a></span>  <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a560d18c5919e4d2353a151335c82151a" title="Disconnect two ports.">disconnect</a>(boost::shared_ptr<Connectable> <span class="comment">/*tail*/</span>,</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  boost::shared_ptr<Connectable> <span class="comment">/*head*/</span>) {}</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a4462cf8ed219bd84d8e7043a2d91d677"> 137</a></span>  <span class="keyword">static</span> sigc::signal<void, Gnome::Canvas::Item*> <a class="code" href="classFlowCanvas_1_1Canvas.html#a4462cf8ed219bd84d8e7043a2d91d677">signal_item_entered</a>;</div>
<div class="line"><a name="l00138"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a12ecf160f322298bda3f40b927c54944"> 138</a></span>  <span class="keyword">static</span> sigc::signal<void, Gnome::Canvas::Item*> <a class="code" href="classFlowCanvas_1_1Canvas.html#a12ecf160f322298bda3f40b927c54944">signal_item_left</a>;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#ac1f899d52cb5081609fb4f6f40916223"> 141</a></span>  <a class="code" href="namespaceFlowCanvas.html#ab4c39f25b89c40708f2478a262fa4726">ItemList</a> <a class="code" href="classFlowCanvas_1_1Canvas.html#ac1f899d52cb5081609fb4f6f40916223" title="All items on this canvas.">_items</a>; </div>
<div class="line"><a name="l00142"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a4879659380dc9a174f1fd0ae047d8b73"> 142</a></span>  <a class="code" href="namespaceFlowCanvas.html#a95ded2c688bc4a98564a47ebb93a8c73">ConnectionList</a> <a class="code" href="classFlowCanvas_1_1Canvas.html#a4879659380dc9a174f1fd0ae047d8b73" title="All connections on this canvas.">_connections</a>; </div>
<div class="line"><a name="l00143"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#ad6b14aca9902a4a58d6da522864088be"> 143</a></span>  std::list< boost::shared_ptr<Item> > <a class="code" href="classFlowCanvas_1_1Canvas.html#ad6b14aca9902a4a58d6da522864088be" title="All currently selected modules.">_selected_items</a>; </div>
<div class="line"><a name="l00144"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a6f910a0f700b81bd63eb48319c5044ae"> 144</a></span>  std::list< boost::shared_ptr<Connection> > <a class="code" href="classFlowCanvas_1_1Canvas.html#a6f910a0f700b81bd63eb48319c5044ae" title="All currently selected connections.">_selected_connections</a>; </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#ac9a5c9d447ed6dca8e2af47370d9738c">canvas_event</a>(GdkEvent* event);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#adf31ebec99e1979546ddd515615ef0a5">frame_event</a>(GdkEvent* ev);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00150"></a><span class="lineno"><a class="code" href="classFlowCanvas_1_1Canvas.html#a21f639900c480510650969df9c74d17d"> 150</a></span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classFlowCanvas_1_1Module.html" title="A named block (possibly) containing input and output ports.">Module</a>;</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordtype">bool</span> port_event(GdkEvent* event, boost::weak_ptr<Port> port);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  GVNodes layout_dot(<span class="keywordtype">bool</span> use_length_hints, <span class="keyword">const</span> std::string& filename);</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordtype">void</span> <a class="code" href="classFlowCanvas_1_1Canvas.html#a899f3eb2b839759cb63a6bec8d230b51">remove_connection</a>(boost::shared_ptr<Connection> c);</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordtype">bool</span> are_connected(boost::shared_ptr<const Connectable> tail,</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  boost::shared_ptr<const Connectable> head);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordtype">void</span> select_port(boost::shared_ptr<Port> p, <span class="keywordtype">bool</span> unique = <span class="keyword">false</span>);</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordtype">void</span> select_port_toggle(boost::shared_ptr<Port> p, <span class="keywordtype">int</span> mod_state);</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordtype">void</span> unselect_port(boost::shared_ptr<Port> p);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordtype">void</span> selection_joined_with(boost::shared_ptr<Port> port);</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordtype">void</span> join_selection();</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> </div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  boost::shared_ptr<Port> get_port_at(<span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y);</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordtype">bool</span> scroll_drag_handler(GdkEvent* event);</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordtype">bool</span> select_drag_handler(GdkEvent* event);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">bool</span> connection_drag_handler(GdkEvent* event);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordtype">void</span> ports_joined(boost::shared_ptr<Port> port1, boost::shared_ptr<Port> port2);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordtype">bool</span> animate_selected();</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordtype">void</span> move_contents_to_internal(<span class="keywordtype">double</span> x, <span class="keywordtype">double</span> y, <span class="keywordtype">double</span> min_x, <span class="keywordtype">double</span> min_y);</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordtype">void</span> on_parent_changed(Gtk::Widget* old_parent);</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  sigc::connection _parent_event_connection;</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">typedef</span> std::list< boost::shared_ptr<Port> > SelectedPorts;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  SelectedPorts _selected_ports; </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  boost::shared_ptr<Port> _connect_port; </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  boost::shared_ptr<Port> _last_selected_port;</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> </div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  Gnome::Canvas::Rect _base_rect; </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  Gnome::Canvas::Rect* _select_rect; </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  ArtVpathDash* _select_dash; </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordtype">double</span> _zoom; </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordtype">double</span> _width;</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordtype">double</span> _height;</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">enum</span> DragState { NOT_DRAGGING, CONNECTION, SCROLL, SELECT };</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  DragState _drag_state;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="classFlowCanvas_1_1Canvas.html#aa23cb275264c537348d083a3d43f4ec1">FlowDirection</a> _direction;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordtype">bool</span> _remove_objects :1; <span class="comment">// flag to avoid removing objects from destructors when unnecessary</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">bool</span> _locked :1;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> };</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> } <span class="comment">// namespace FlowCanvas</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> </div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span> <span class="preprocessor">#endif // FLOWCANVAS_CANVAS_HPP</span></div>
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