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<div id="projectname">cairomm
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<div class="title">ps-surface.cc</div> </div>
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<p>An example of using <a class="el" href="classCairo_1_1PsSurface.html" title="A PsSurface provides a way to render PostScript documents from cairo. ">Cairo::PsSurface</a> class to render to PostScript</p>
<div class="fragment"><div class="line"><span class="comment">/* M_PI is defined in math.h in the case of Microsoft Visual C++, Solaris,</span></div>
<div class="line"><span class="comment"> * et. al.</span></div>
<div class="line"><span class="comment"> */</span></div>
<div class="line"><span class="preprocessor">#if defined(_MSC_VER)</span></div>
<div class="line"><span class="preprocessor">#define _USE_MATH_DEFINES</span></div>
<div class="line"><span class="preprocessor">#endif </span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include <string></span></div>
<div class="line"><span class="preprocessor">#include <iostream></span></div>
<div class="line"><span class="preprocessor">#include <cairommconfig.h></span></div>
<div class="line"><span class="preprocessor">#include <cairomm/context.h></span></div>
<div class="line"><span class="preprocessor">#include <cairomm/surface.h></span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include <cmath></span></div>
<div class="line"></div>
<div class="line"><span class="keywordtype">int</span> main()</div>
<div class="line">{</div>
<div class="line"><span class="preprocessor">#ifdef CAIRO_HAS_PS_SURFACE</span></div>
<div class="line"></div>
<div class="line"> <a name="_a0"></a><a class="codeRef" doxygen="libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00454.html">std::string</a> filename = <span class="stringliteral">"image.ps"</span>;</div>
<div class="line"> <span class="keywordtype">double</span> width = 600;</div>
<div class="line"> <span class="keywordtype">double</span> height = 400;</div>
<div class="line"> <span class="keyword">auto</span> surface =</div>
<div class="line"> <a name="a1"></a><a class="code" href="classCairo_1_1PsSurface.html#a0d7a34b58211563e2b1f2f4f85818e90">Cairo::PsSurface::create</a>(filename, width, height);</div>
<div class="line"></div>
<div class="line"> <span class="keyword">auto</span> cr = <a name="a2"></a><a class="code" href="classCairo_1_1Context.html#a9a27f6ec57d788fd3ecbc310aeb24d99">Cairo::Context::create</a>(surface);</div>
<div class="line"></div>
<div class="line"> cr->save(); <span class="comment">// save the state of the context</span></div>
<div class="line"> cr->set_source_rgb(0.86, 0.85, 0.47);</div>
<div class="line"> cr->paint(); <span class="comment">// fill image with the color</span></div>
<div class="line"> cr->restore(); <span class="comment">// color is back to black now</span></div>
<div class="line"></div>
<div class="line"> cr->save();</div>
<div class="line"> <span class="comment">// draw a border around the image</span></div>
<div class="line"> cr->set_line_width(20.0); <span class="comment">// make the line wider</span></div>
<div class="line"> cr->rectangle(0.0, 0.0, cairo_image_surface_get_width(surface->cobj()), height);</div>
<div class="line"> cr->stroke();</div>
<div class="line"></div>
<div class="line"> cr->set_source_rgba(0.0, 0.0, 0.0, 0.7);</div>
<div class="line"> <span class="comment">// draw a circle in the center of the image</span></div>
<div class="line"> cr->arc(width / 2.0, height / 2.0, </div>
<div class="line"> height / 4.0, 0.0, 2.0 * M_PI);</div>
<div class="line"> cr->stroke();</div>
<div class="line"></div>
<div class="line"> <span class="comment">// draw a diagonal line</span></div>
<div class="line"> cr->move_to(width / 4.0, height / 4.0);</div>
<div class="line"> cr->line_to(width * 3.0 / 4.0, height * 3.0 / 4.0);</div>
<div class="line"> cr->stroke();</div>
<div class="line"> cr->restore();</div>
<div class="line"></div>
<div class="line"> cr->show_page();</div>
<div class="line"></div>
<div class="line"> <a name="a3"></a>std::cout << <span class="stringliteral">"Wrote PostScript file \""</span> << filename << <span class="stringliteral">"\""</span> << <a name="a4"></a><a class="codeRef" doxygen="libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01616.html#a8b3758bb8f17c440c7963363f42f69f3">std::endl</a>;</div>
<div class="line"> <span class="keywordflow">return</span> 0;</div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#else</span></div>
<div class="line"></div>
<div class="line"> std::cout << <span class="stringliteral">"You must compile cairo with PS (Postscript) support for this example to work."</span></div>
<div class="line"> << <a class="codeRef" doxygen="libstdc++.tag:http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01616.html#a8b3758bb8f17c440c7963363f42f69f3">std::endl</a>;</div>
<div class="line"> <span class="keywordflow">return</span> 1;</div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line">}</div>
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