DISTRHO Plugin Framework
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  85. <div class="title">Color.hpp</div> </div>
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  87. <div class="contents">
  88. <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
  89. <div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * DISTRHO Plugin Framework (DPF)</span></div>
  90. <div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * Copyright (C) 2012-2014 Filipe Coelho &lt;falktx@falktx.com&gt;</span></div>
  91. <div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> *</span></div>
  92. <div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * Permission to use, copy, modify, and/or distribute this software for any purpose with</span></div>
  93. <div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * or without fee is hereby granted, provided that the above copyright notice and this</span></div>
  94. <div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * permission notice appear in all copies.</span></div>
  95. <div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> *</span></div>
  96. <div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD</span></div>
  97. <div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN</span></div>
  98. <div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL</span></div>
  99. <div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER</span></div>
  100. <div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN</span></div>
  101. <div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div>
  102. <div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> */</span></div>
  103. <div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;</div>
  104. <div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="preprocessor">#ifndef DGL_COLOR_HPP_INCLUDED</span></div>
  105. <div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#define DGL_COLOR_HPP_INCLUDED</span></div>
  106. <div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;</div>
  107. <div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#include &quot;Base.hpp&quot;</span></div>
  108. <div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;</div>
  109. <div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="keyword">struct </span>NVGcolor;</div>
  110. <div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;</div>
  111. <div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;START_NAMESPACE_DGL</div>
  112. <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;</div>
  113. <div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div>
  114. <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div>
  115. <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// TODO: create color from &quot;#333&quot; and &quot;#112233&quot; like strings</span></div>
  116. <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment"></span></div>
  117. <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">/**</span></div>
  118. <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment"> A color made from red, green, blue and alpha floating-point values in [0..1] range.</span></div>
  119. <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">*/</span></div>
  120. <div class="line"><a name="l00033"></a><span class="lineno"><a class="line" href="structColor.html"> 33</a></span>&#160;<span class="keyword">struct </span><a class="code" href="structColor.html">Color</a> {<span class="comment"></span></div>
  121. <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment"> /**</span></div>
  122. <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment"> Direct access to the color values.</span></div>
  123. <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment"> */</span></div>
  124. <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160; <span class="keyword">union </span>{</div>
  125. <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; <span class="keywordtype">float</span> rgba[4];</div>
  126. <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keyword">struct </span>{ <span class="keywordtype">float</span> red, green, blue, alpha; };</div>
  127. <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; };</div>
  128. <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment"></span></div>
  129. <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment"> /**</span></div>
  130. <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160;<span class="comment"> Create black color.</span></div>
  131. <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="comment"> */</span></div>
  132. <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <a class="code" href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color</a>() noexcept;</div>
  133. <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160;<span class="comment"></span></div>
  134. <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160;<span class="comment"> /**</span></div>
  135. <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160;<span class="comment"> Create a color from red, green, blue and alpha numeric values.</span></div>
  136. <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160;<span class="comment"> Values must be in [0..255] range.</span></div>
  137. <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160;<span class="comment"> */</span></div>
  138. <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; <a class="code" href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color</a>(<span class="keywordtype">int</span> red, <span class="keywordtype">int</span> green, <span class="keywordtype">int</span> blue, <span class="keywordtype">int</span> alpha = 255) noexcept;</div>
  139. <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160;<span class="comment"></span></div>
  140. <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160;<span class="comment"> /**</span></div>
  141. <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160;<span class="comment"> Create a color from red, green, blue and alpha floating-point values.</span></div>
  142. <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;<span class="comment"> Values must in [0..1] range.</span></div>
  143. <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;<span class="comment"> */</span></div>
  144. <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <a class="code" href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color</a>(<span class="keywordtype">float</span> red, <span class="keywordtype">float</span> green, <span class="keywordtype">float</span> blue, <span class="keywordtype">float</span> alpha = 1.0f) noexcept;</div>
  145. <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160;<span class="comment"></span></div>
  146. <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160;<span class="comment"> /**</span></div>
  147. <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160;<span class="comment"> Create a color by copying another color.</span></div>
  148. <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160;<span class="comment"> */</span></div>
  149. <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; <a class="code" href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color</a>(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color) noexcept;</div>
  150. <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <a class="code" href="structColor.html">Color</a>&amp; operator=(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color) noexcept;</div>
  151. <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160;<span class="comment"></span></div>
  152. <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160;<span class="comment"> /**</span></div>
  153. <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160;<span class="comment"> Create a color by linearly interpolating two other colors.</span></div>
  154. <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160;<span class="comment"> */</span></div>
  155. <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <a class="code" href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color</a>(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color1, <span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color2, <span class="keywordtype">float</span> u) noexcept;</div>
  156. <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160;<span class="comment"></span></div>
  157. <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160;<span class="comment"> /**</span></div>
  158. <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160;<span class="comment"> Create a color specified by hue, saturation and lightness.</span></div>
  159. <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160;<span class="comment"> Values must in [0..1] range.</span></div>
  160. <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160;<span class="comment"> */</span></div>
  161. <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keyword">static</span> <a class="code" href="structColor.html">Color</a> <a class="code" href="structColor.html#a41820f7349e997489d53f98036e76a0c">fromHSL</a>(<span class="keywordtype">float</span> hue, <span class="keywordtype">float</span> saturation, <span class="keywordtype">float</span> lightness, <span class="keywordtype">float</span> alpha = 1.0f);</div>
  162. <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160;<span class="comment"></span></div>
  163. <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;<span class="comment"> /**</span></div>
  164. <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;<span class="comment"> Create a color from a HTML string like &quot;#333&quot; or &quot;#112233&quot;.</span></div>
  165. <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="comment"> */</span></div>
  166. <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keyword">static</span> <a class="code" href="structColor.html">Color</a> <a class="code" href="structColor.html#a57a79f611e15fb0abd288838a85990cb">fromHTML</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* rgb, <span class="keywordtype">float</span> alpha = 1.0f);</div>
  167. <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;<span class="comment"></span></div>
  168. <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="comment"> /**</span></div>
  169. <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;<span class="comment"> Linearly interpolate this color against another.</span></div>
  170. <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;<span class="comment"> */</span></div>
  171. <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>&#160; <span class="keywordtype">void</span> <a class="code" href="structColor.html#a96283f5b9ad6f6465e40f69012aca00f">interpolate</a>(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; other, <span class="keywordtype">float</span> u) noexcept;</div>
  172. <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160;<span class="comment"></span></div>
  173. <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160;<span class="comment"> /**</span></div>
  174. <div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;<span class="comment"> Check if this color matches another.</span></div>
  175. <div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;<span class="comment"> @note: Comparison is forced within 8-bit color values.</span></div>
  176. <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;<span class="comment"> */</span></div>
  177. <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordtype">bool</span> <a class="code" href="structColor.html#a16880d42b2d52ed23eb307ed2980a9a3">isEqual</a>(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color, <span class="keywordtype">bool</span> withAlpha = <span class="keyword">true</span>) noexcept;</div>
  178. <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordtype">bool</span> isNotEqual(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color, <span class="keywordtype">bool</span> withAlpha = <span class="keyword">true</span>) noexcept;</div>
  179. <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color) noexcept;</div>
  180. <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> <a class="code" href="structColor.html">Color</a>&amp; color) noexcept;</div>
  181. <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160;<span class="comment"></span></div>
  182. <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160;<span class="comment"> /**</span></div>
  183. <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160;<span class="comment"> Fix color bounds if needed.</span></div>
  184. <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;<span class="comment"> */</span></div>
  185. <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; <span class="keywordtype">void</span> <a class="code" href="structColor.html#aad01f46af4cdb18b2bcbddd3f63d14d5">fixBounds</a>() noexcept;</div>
  186. <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160;<span class="comment"></span></div>
  187. <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160;<span class="comment"> /**</span></div>
  188. <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160;<span class="comment"> @internal</span></div>
  189. <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160;<span class="comment"> Needed for NanoVG compatibility.</span></div>
  190. <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;<span class="comment"> */</span></div>
  191. <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <a class="code" href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color</a>(<span class="keyword">const</span> NVGcolor&amp;) noexcept;</div>
  192. <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keyword">operator</span> NVGcolor() <span class="keyword">const</span> noexcept;</div>
  193. <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;};</div>
  194. <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160;</div>
  195. <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div>
  196. <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160;</div>
  197. <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160;END_NAMESPACE_DGL</div>
  198. <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;</div>
  199. <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160;<span class="preprocessor">#endif // DGL_COLOR_HPP_INCLUDED</span></div>
  200. <div class="ttc" id="structColor_html_aad01f46af4cdb18b2bcbddd3f63d14d5"><div class="ttname"><a href="structColor.html#aad01f46af4cdb18b2bcbddd3f63d14d5">Color::fixBounds</a></div><div class="ttdeci">void fixBounds() noexcept</div></div>
  201. <div class="ttc" id="structColor_html"><div class="ttname"><a href="structColor.html">Color</a></div><div class="ttdef"><b>Definition:</b> Color.hpp:33</div></div>
  202. <div class="ttc" id="structColor_html_acbbdba6661c2bbd987ef27de59813b47"><div class="ttname"><a href="structColor.html#acbbdba6661c2bbd987ef27de59813b47">Color::Color</a></div><div class="ttdeci">Color() noexcept</div></div>
  203. <div class="ttc" id="structColor_html_a41820f7349e997489d53f98036e76a0c"><div class="ttname"><a href="structColor.html#a41820f7349e997489d53f98036e76a0c">Color::fromHSL</a></div><div class="ttdeci">static Color fromHSL(float hue, float saturation, float lightness, float alpha=1.0f)</div></div>
  204. <div class="ttc" id="structColor_html_a16880d42b2d52ed23eb307ed2980a9a3"><div class="ttname"><a href="structColor.html#a16880d42b2d52ed23eb307ed2980a9a3">Color::isEqual</a></div><div class="ttdeci">bool isEqual(const Color &amp;color, bool withAlpha=true) noexcept</div></div>
  205. <div class="ttc" id="structColor_html_a96283f5b9ad6f6465e40f69012aca00f"><div class="ttname"><a href="structColor.html#a96283f5b9ad6f6465e40f69012aca00f">Color::interpolate</a></div><div class="ttdeci">void interpolate(const Color &amp;other, float u) noexcept</div></div>
  206. <div class="ttc" id="structColor_html_a57a79f611e15fb0abd288838a85990cb"><div class="ttname"><a href="structColor.html#a57a79f611e15fb0abd288838a85990cb">Color::fromHTML</a></div><div class="ttdeci">static Color fromHTML(const char *rgb, float alpha=1.0f)</div></div>
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