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<h1>ps-surface.cc</h1> </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"><pre class="fragment"><span class="comment">/* M_PI is defined in math.h in the case of Microsoft Visual C++, Solaris,</span>
<span class="comment"> * et. al.</span>
<span class="comment"> */</span>
<span class="preprocessor">#if defined(_MSC_VER)</span>
<span class="preprocessor"></span><span class="preprocessor">#define _USE_MATH_DEFINES</span>
<span class="preprocessor"></span><span class="preprocessor">#endif </span>
<span class="preprocessor"></span>
<span class="preprocessor">#include <string></span>
<span class="preprocessor">#include <iostream></span>
<span class="preprocessor">#include <cairommconfig.h></span>
<span class="preprocessor">#include <cairomm/context.h></span>
<span class="preprocessor">#include <cairomm/surface.h></span>
<span class="preprocessor">#include <cmath></span>
<span class="keywordtype">int</span> main()
{
<span class="preprocessor">#ifdef CAIRO_HAS_PS_SURFACE</span>
<span class="preprocessor"></span>
<a name="_a0"></a><a class="codeRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a00254.html">std::string</a> filename = <span class="stringliteral">"image.ps"</span>;
<span class="keywordtype">double</span> width = 600;
<span class="keywordtype">double</span> height = 400;
<a name="_a1"></a><a class="code" href="classCairo_1_1RefPtr.html" title="RefPtr&lt;&gt; is a reference-counting shared smartpointer.">Cairo::RefPtr<Cairo::PsSurface></a> surface =
<a name="a2"></a><a class="code" href="classCairo_1_1PsSurface.html#a0d7a34b58211563e2b1f2f4f85818e90" title="Creates a PsSurface with a specified dimensions that will be saved as the given filename.">Cairo::PsSurface::create</a>(filename, width, height);
<a class="code" href="classCairo_1_1RefPtr.html" title="RefPtr&lt;&gt; is a reference-counting shared smartpointer.">Cairo::RefPtr<Cairo::Context></a> cr = <a name="a3"></a><a class="code" href="classCairo_1_1Context.html#a9a27f6ec57d788fd3ecbc310aeb24d99">Cairo::Context::create</a>(surface);
cr->save(); <span class="comment">// save the state of the context</span>
cr->set_source_rgb(0.86, 0.85, 0.47);
cr->paint(); <span class="comment">// fill image with the color</span>
cr->restore(); <span class="comment">// color is back to black now</span>
cr->save();
<span class="comment">// draw a border around the image</span>
cr->set_line_width(20.0); <span class="comment">// make the line wider</span>
cr->rectangle(0.0, 0.0, cairo_image_surface_get_width(surface->cobj()), height);
cr->stroke();
cr->set_source_rgba(0.0, 0.0, 0.0, 0.7);
<span class="comment">// draw a circle in the center of the image</span>
cr->arc(width / 2.0, height / 2.0, height / 4.0, 0.0, 2.0 * M_PI);
cr->stroke();
<span class="comment">// draw a diagonal line</span>
cr->move_to(width / 4.0, height / 4.0);
cr->line_to(width * 3.0 / 4.0, height * 3.0 / 4.0);
cr->stroke();
cr->restore();
cr->show_page();
<a name="a4"></a><a class="codeRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01136.html#aaf93fdf0812752e0e02c501dea1b38f0">std::cout</a> << <span class="stringliteral">"Wrote PostScript file \""</span> << filename << <span class="stringliteral">"\""</span> << <a name="a5"></a><a class="codeRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01136.html#a9e2ba1ed9813a1f03adc9a87dbf491a5">std::endl</a>;
<span class="keywordflow">return</span> 0;
<span class="preprocessor">#else</span>
<span class="preprocessor"></span>
<a class="codeRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01136.html#aaf93fdf0812752e0e02c501dea1b38f0">std::cout</a> << <span class="stringliteral">"You must compile cairo with PS (Postscript) support for this example to work."</span>
<< <a class="codeRef" href="http://gcc.gnu.org/onlinedocs/libstdc++/latest-doxygen/a01136.html#a9e2ba1ed9813a1f03adc9a87dbf491a5">std::endl</a>;
<span class="keywordflow">return</span> 1;
<span class="preprocessor">#endif</span>
<span class="preprocessor"></span>}
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