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<html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
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<title>gerbv: src/exportimage.c Source File</title>
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<li><a href="main.html"><span>Main Page</span></a></li>
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<li><a href="classes.html"><span>Data Structures</span></a></li>
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<div class="contents">
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<h1>exportimage.c</h1><a href="exportimage_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * gEDA - GNU Electronic Design Automation</span>
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<a name="l00003"></a>00003 <span class="comment"> * This file is a part of gerbv.</span>
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<a name="l00004"></a>00004 <span class="comment"> *</span>
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<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2000-2002 Stefan Petersen (spe@stacken.kth.se)</span>
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<a name="l00006"></a>00006 <span class="comment"> *</span>
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<a name="l00007"></a>00007 <span class="comment"> * Contributed by Dino Ghilardi <dino.ghilardi@ieee.org> </span>
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<a name="l00008"></a>00008 <span class="comment"> *</span>
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<a name="l00009"></a>00009 <span class="comment"> * $Id$</span>
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<a name="l00010"></a>00010 <span class="comment"> *</span>
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<a name="l00011"></a>00011 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
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<a name="l00012"></a>00012 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
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<a name="l00013"></a>00013 <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span>
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<a name="l00014"></a>00014 <span class="comment"> * (at your option) any later version.</span>
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<a name="l00015"></a>00015 <span class="comment"> *</span>
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<a name="l00016"></a>00016 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
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<a name="l00017"></a>00017 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
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<a name="l00018"></a>00018 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
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<a name="l00019"></a>00019 <span class="comment"> * GNU General Public License for more details.</span>
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<a name="l00020"></a>00020 <span class="comment"> *</span>
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<a name="l00021"></a>00021 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
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<a name="l00022"></a>00022 <span class="comment"> * along with this program; if not, write to the Free Software</span>
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<a name="l00023"></a>00023 <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA</span>
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<a name="l00024"></a>00024 <span class="comment"> */</span>
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<a name="l00025"></a>00025
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<a name="l00031"></a>00031 <span class="preprocessor">#ifdef HAVE_CONFIG_H</span>
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<a name="l00032"></a>00032 <span class="preprocessor"></span><span class="preprocessor">#include <config.h></span>
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<a name="l00033"></a>00033 <span class="preprocessor">#endif</span>
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<a name="l00034"></a>00034 <span class="preprocessor"></span>
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<a name="l00035"></a>00035 <span class="preprocessor">#ifdef HAVE_UNISTD_H</span>
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<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#include <unistd.h></span>
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<a name="l00037"></a>00037 <span class="preprocessor">#endif</span>
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<a name="l00038"></a>00038 <span class="preprocessor"></span>
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<a name="l00039"></a>00039 <span class="preprocessor">#include <math.h></span>
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<a name="l00040"></a>00040 <span class="preprocessor">#include <gdk-pixbuf/gdk-pixbuf.h></span>
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<a name="l00041"></a>00041 <span class="preprocessor">#include <png.h></span>
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<a name="l00042"></a>00042
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<a name="l00043"></a>00043 <span class="preprocessor">#include "<a class="code" href="gerbv_8h.html" title="The main header file for the libgerbv library.">gerbv.h</a>"</span>
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<a name="l00044"></a>00044
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<a name="l00045"></a>00045 <span class="preprocessor">#ifdef RENDER_USING_GDK</span>
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<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor"> #include "<a class="code" href="draw-gdk_8h.html" title="Header info for the GDK rendering functions.">draw-gdk.h</a>"</span>
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<a name="l00047"></a>00047 <span class="preprocessor">#else</span>
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<a name="l00048"></a>00048 <span class="preprocessor"></span><span class="preprocessor"> #include "<a class="code" href="draw_8h.html" title="Header info for the cairo rendering functions and the related selection calculating...">draw.h</a>"</span>
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<a name="l00049"></a>00049 <span class="preprocessor"> #include <cairo.h></span>
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<a name="l00050"></a>00050 <span class="preprocessor"> #include <cairo-pdf.h></span>
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<a name="l00051"></a>00051 <span class="preprocessor"> #include <cairo-ps.h></span>
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<a name="l00052"></a>00052 <span class="preprocessor"> #include <cairo-svg.h></span>
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<a name="l00053"></a>00053 <span class="preprocessor">#endif</span>
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<a name="l00054"></a>00054 <span class="preprocessor"></span>
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<a name="l00055"></a>00055 <span class="keyword">extern</span> <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> screenRenderInfo;
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<a name="l00056"></a>00056
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<a name="l00057"></a>00057 <span class="preprocessor">#ifdef RENDER_USING_GDK</span>
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<a name="l00058"></a>00058 <span class="preprocessor"></span><span class="keyword">static</span> gboolean
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<a name="l00059"></a>00059 exportimage_save_pixbuf_to_file (GdkPixbuf* pixbuf, gchar <span class="keyword">const</span>* filename);
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<a name="l00060"></a>00060 <span class="preprocessor">#endif</span>
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<a name="l00061"></a>00061 <span class="preprocessor"></span>
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<a name="l00062"></a>00062 <span class="preprocessor">#ifndef RENDER_USING_GDK</span>
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<a name="l00063"></a>00063 <span class="preprocessor"></span><span class="keywordtype">void</span> exportimage_render_to_surface_and_destroy (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject,
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<a name="l00064"></a>00064 cairo_surface_t *cSurface, <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> *renderInfo, gchar <span class="keyword">const</span>* filename) {
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<a name="l00065"></a>00065 cairo_t *cairoTarget = cairo_create (cSurface);
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<a name="l00066"></a>00066
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<a name="l00067"></a>00067 gerbv_render_all_layers_to_cairo_target_for_vector_output (gerbvProject, cairoTarget, renderInfo);
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<a name="l00068"></a>00068 cairo_destroy (cairoTarget);
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<a name="l00069"></a>00069 cairo_surface_destroy (cSurface);
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<a name="l00070"></a>00070 }
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<a name="l00071"></a>00071 <span class="preprocessor">#endif</span>
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<a name="l00072"></a>00072 <span class="preprocessor"></span>
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<a name="l00073"></a>00073
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<a name="l00074"></a><a class="code" href="gerbv_8h.html#9afeb20672420eaa4998a597c913c818">00074</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#9afeb20672420eaa4998a597c913c818" title="Render a project to a PNG file, autoscaling the layers to fit inside the specified...">gerbv_export_png_file_from_project_autoscaled</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <span class="keywordtype">int</span> widthInPixels,
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<a name="l00075"></a>00075 <span class="keywordtype">int</span> heightInPixels, gchar <span class="keyword">const</span>* filename) {
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<a name="l00076"></a>00076 <span class="preprocessor">#ifdef EXPORT_PNG</span>
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<a name="l00077"></a>00077 <span class="preprocessor"></span><span class="preprocessor">#ifdef RENDER_USING_GDK</span>
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<a name="l00078"></a>00078 <span class="preprocessor"></span> <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> renderInfo = {1.0, 1.0, 0, 0, 0, widthInPixels, heightInPixels};
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<a name="l00079"></a>00079 <span class="preprocessor">#else</span>
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<a name="l00080"></a>00080 <span class="preprocessor"></span> <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> renderInfo = {1.0, 1.0, 0, 0, 3, widthInPixels, heightInPixels};
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<a name="l00081"></a>00081 <span class="preprocessor">#endif </span>
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<a name="l00082"></a>00082 <span class="preprocessor"></span> <a class="code" href="gerbv_8c.html#c4a1b93b36ae9b6cbda1da4441bf087d" title="Calculate the zoom and translations to fit the rendered scene inside the given scene...">gerbv_render_zoom_to_fit_display</a> (gerbvProject, &renderInfo);
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<a name="l00083"></a>00083 <a class="code" href="exportimage_8c.html#0f4275e99b0b5e083dbfca807ceee584" title="Render a project to a PNG file using user-specified render info.">gerbv_export_png_file_from_project</a> (gerbvProject, &renderInfo, filename);
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<a name="l00084"></a>00084 <span class="preprocessor">#endif</span>
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<a name="l00085"></a>00085 <span class="preprocessor"></span>}
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<a name="l00086"></a>00086
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<a name="l00087"></a><a class="code" href="gerbv_8h.html#0f4275e99b0b5e083dbfca807ceee584">00087</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#0f4275e99b0b5e083dbfca807ceee584" title="Render a project to a PNG file using user-specified render info.">gerbv_export_png_file_from_project</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> *renderInfo, gchar <span class="keyword">const</span>* filename) {
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<a name="l00088"></a>00088 <span class="preprocessor">#ifdef EXPORT_PNG</span>
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<a name="l00089"></a>00089 <span class="preprocessor"></span><span class="preprocessor">#ifdef RENDER_USING_GDK</span>
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<a name="l00090"></a>00090 <span class="preprocessor"></span>
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<a name="l00091"></a>00091 GdkPixmap *renderedPixmap = gdk_pixmap_new (NULL, renderInfo-><a class="code" href="structgerbv__render__info__t.html#c1f647d0380e07c39a350f21a37e7a5c">displayWidth</a>,
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<a name="l00092"></a>00092 renderInfo-><a class="code" href="structgerbv__render__info__t.html#465fcc1f9e903179b0f44ac028ad7dbc">displayHeight</a>, 24);
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<a name="l00093"></a>00093 GdkColormap *colormap=NULL;
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<a name="l00094"></a>00094 GdkPixbuf *tempPixbuf=NULL;
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<a name="l00095"></a>00095
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<a name="l00096"></a>00096 gerbv_render_to_pixmap_using_gdk (gerbvProject, renderedPixmap, renderInfo, NULL, NULL);
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<a name="l00097"></a>00097 colormap = gdk_drawable_get_colormap(renderedPixmap);
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<a name="l00098"></a>00098 <span class="keywordflow">if</span> ((tempPixbuf = gdk_pixbuf_get_from_drawable(tempPixbuf, renderedPixmap,
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<a name="l00099"></a>00099 colormap, 0, 0, 0, 0,
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<a name="l00100"></a>00100 renderInfo-><a class="code" href="structgerbv__render__info__t.html#c1f647d0380e07c39a350f21a37e7a5c">displayWidth</a>, renderInfo-><a class="code" href="structgerbv__render__info__t.html#465fcc1f9e903179b0f44ac028ad7dbc">displayHeight</a>))) {
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<a name="l00101"></a>00101 exportimage_save_pixbuf_to_file (tempPixbuf, filename);
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<a name="l00102"></a>00102 gdk_pixbuf_unref(tempPixbuf);
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<a name="l00103"></a>00103 }
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<a name="l00104"></a>00104 gdk_pixmap_unref(renderedPixmap);
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<a name="l00105"></a>00105
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<a name="l00106"></a>00106 <span class="comment">//png_export (NULL, filename);</span>
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<a name="l00107"></a>00107 <span class="preprocessor">#else</span>
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<a name="l00108"></a>00108 <span class="preprocessor"></span> cairo_surface_t *cSurface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
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<a name="l00109"></a>00109 renderInfo-><a class="code" href="structgerbv__render__info__t.html#c1f647d0380e07c39a350f21a37e7a5c">displayWidth</a>, renderInfo-><a class="code" href="structgerbv__render__info__t.html#465fcc1f9e903179b0f44ac028ad7dbc">displayHeight</a>);
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<a name="l00110"></a>00110 cairo_t *cairoTarget = cairo_create (cSurface);
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<a name="l00111"></a>00111 gerbv_render_all_layers_to_cairo_target (gerbvProject, cairoTarget, renderInfo);
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<a name="l00112"></a>00112 cairo_surface_write_to_png (cSurface, filename);
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<a name="l00113"></a>00113 cairo_destroy (cairoTarget);
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<a name="l00114"></a>00114 cairo_surface_destroy (cSurface);
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<a name="l00115"></a>00115 <span class="preprocessor">#endif</span>
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<a name="l00116"></a>00116 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
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<a name="l00117"></a>00117 <span class="preprocessor"></span>}
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<a name="l00118"></a>00118
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<a name="l00119"></a>00119
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<a name="l00120"></a><a class="code" href="gerbv_8h.html#3caaf8b1cbb9e002f2370069f27625ea">00120</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#cc75d663bc66079518be345841deb73b" title="Render a project to a PDF file, autoscaling the layers to fit inside the specified...">gerbv_export_pdf_file_from_project_autoscaled</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <span class="keywordtype">int</span> widthInPoints,
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<a name="l00121"></a>00121 <span class="keywordtype">int</span> heightInPoints, gchar <span class="keyword">const</span>* filename) {
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<a name="l00122"></a>00122 <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> renderInfo = {1.0, 1.0, 0, 0, 3, widthInPoints, heightInPoints};
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<a name="l00123"></a>00123
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<a name="l00124"></a>00124 <a class="code" href="gerbv_8c.html#c4a1b93b36ae9b6cbda1da4441bf087d" title="Calculate the zoom and translations to fit the rendered scene inside the given scene...">gerbv_render_zoom_to_fit_display</a> (gerbvProject, &renderInfo);
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<a name="l00125"></a>00125 <a class="code" href="exportimage_8c.html#bd459f30af80b3fbd4fb59fb6adf7de9" title="Render a project to a PDF file using user-specified render info.">gerbv_export_pdf_file_from_project</a> (gerbvProject, &renderInfo, filename);
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<a name="l00126"></a>00126 }
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<a name="l00127"></a>00127
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<a name="l00128"></a><a class="code" href="gerbv_8h.html#bd459f30af80b3fbd4fb59fb6adf7de9">00128</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#bd459f30af80b3fbd4fb59fb6adf7de9" title="Render a project to a PDF file using user-specified render info.">gerbv_export_pdf_file_from_project</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> *renderInfo,
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<a name="l00129"></a>00129 gchar <span class="keyword">const</span>* filename) {
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<a name="l00130"></a>00130 <span class="preprocessor">#ifndef RENDER_USING_GDK</span>
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<a name="l00131"></a>00131 <span class="preprocessor"></span> cairo_surface_t *cSurface = cairo_pdf_surface_create (filename, renderInfo-><a class="code" href="structgerbv__render__info__t.html#c1f647d0380e07c39a350f21a37e7a5c">displayWidth</a>,
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<a name="l00132"></a>00132 renderInfo-><a class="code" href="structgerbv__render__info__t.html#465fcc1f9e903179b0f44ac028ad7dbc">displayHeight</a>);
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<a name="l00133"></a>00133
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<a name="l00134"></a>00134 exportimage_render_to_surface_and_destroy (gerbvProject, cSurface, renderInfo, filename);
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<a name="l00135"></a>00135 <span class="preprocessor">#endif</span>
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<a name="l00136"></a>00136 <span class="preprocessor"></span>}
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<a name="l00137"></a>00137
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<a name="l00138"></a><a class="code" href="gerbv_8h.html#ea36d9747229e7ae06484e8b9ec0d088">00138</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#5f45a069a25648258f21f2cd4295104f" title="Render a project to a Postscript file, autoscaling the layers to fit inside the specified...">gerbv_export_postscript_file_from_project_autoscaled</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <span class="keywordtype">int</span> widthInPoints,
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<a name="l00139"></a>00139 <span class="keywordtype">int</span> heightInPoints, gchar <span class="keyword">const</span>* filename) {
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<a name="l00140"></a>00140 <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> renderInfo = {1.0, 1.0, 0, 0, 3, widthInPoints, heightInPoints};
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<a name="l00141"></a>00141
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<a name="l00142"></a>00142 <a class="code" href="gerbv_8c.html#c4a1b93b36ae9b6cbda1da4441bf087d" title="Calculate the zoom and translations to fit the rendered scene inside the given scene...">gerbv_render_zoom_to_fit_display</a> (gerbvProject, &renderInfo);
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<a name="l00143"></a>00143 <a class="code" href="exportimage_8c.html#78a0c7a0568ed284975fc84a84bf2b67" title="Render a project to a Postscript file using user-specified render info.">gerbv_export_postscript_file_from_project</a> (gerbvProject, &renderInfo, filename);
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<a name="l00144"></a>00144 }
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<a name="l00145"></a>00145
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<a name="l00146"></a><a class="code" href="gerbv_8h.html#78a0c7a0568ed284975fc84a84bf2b67">00146</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#78a0c7a0568ed284975fc84a84bf2b67" title="Render a project to a Postscript file using user-specified render info.">gerbv_export_postscript_file_from_project</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> *renderInfo,
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<a name="l00147"></a>00147 gchar <span class="keyword">const</span>* filename) {
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<a name="l00148"></a>00148 <span class="preprocessor">#ifndef RENDER_USING_GDK</span>
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<a name="l00149"></a>00149 <span class="preprocessor"></span> cairo_surface_t *cSurface = cairo_ps_surface_create (filename, renderInfo-><a class="code" href="structgerbv__render__info__t.html#c1f647d0380e07c39a350f21a37e7a5c">displayWidth</a>,
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<a name="l00150"></a>00150 renderInfo-><a class="code" href="structgerbv__render__info__t.html#465fcc1f9e903179b0f44ac028ad7dbc">displayHeight</a>);
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<a name="l00151"></a>00151 exportimage_render_to_surface_and_destroy (gerbvProject, cSurface, renderInfo, filename);
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<a name="l00152"></a>00152 <span class="preprocessor">#endif</span>
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<a name="l00153"></a>00153 <span class="preprocessor"></span>}
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<a name="l00154"></a>00154
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<a name="l00155"></a><a class="code" href="gerbv_8h.html#8d9e0126eb4b1e4abfe29e78ef2e4433">00155</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#5a22d680436359e646cffb09850f0b70" title="Render a project to a SVG file, autoscaling the layers to fit inside the specified...">gerbv_export_svg_file_from_project_autoscaled</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <span class="keywordtype">int</span> widthInPoints,
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<a name="l00156"></a>00156 <span class="keywordtype">int</span> heightInPoints, gchar <span class="keyword">const</span>* filename) {
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<a name="l00157"></a>00157 <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> renderInfo = {1.0, 1.0, 0, 0, 3, widthInPoints, heightInPoints};
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<a name="l00158"></a>00158
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<a name="l00159"></a>00159 <a class="code" href="gerbv_8c.html#c4a1b93b36ae9b6cbda1da4441bf087d" title="Calculate the zoom and translations to fit the rendered scene inside the given scene...">gerbv_render_zoom_to_fit_display</a> (gerbvProject, &renderInfo);
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<a name="l00160"></a>00160 <a class="code" href="exportimage_8c.html#367c889e9f661b4502394a3e1b2f3e9e" title="Render a project to a file using user-specified render info.">gerbv_export_svg_file_from_project</a> (gerbvProject, &renderInfo, filename);
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|
<a name="l00161"></a>00161 }
|
|
<a name="l00162"></a>00162
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|
<a name="l00163"></a><a class="code" href="gerbv_8h.html#367c889e9f661b4502394a3e1b2f3e9e">00163</a> <span class="keywordtype">void</span> <a class="code" href="exportimage_8c.html#367c889e9f661b4502394a3e1b2f3e9e" title="Render a project to a file using user-specified render info.">gerbv_export_svg_file_from_project</a> (<a class="code" href="structgerbv__project__t.html">gerbv_project_t</a> *gerbvProject, <a class="code" href="structgerbv__render__info__t.html">gerbv_render_info_t</a> *renderInfo,
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|
<a name="l00164"></a>00164 gchar <span class="keyword">const</span>* filename) {
|
|
<a name="l00165"></a>00165 <span class="preprocessor">#ifndef RENDER_USING_GDK</span>
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|
<a name="l00166"></a>00166 <span class="preprocessor"></span> cairo_surface_t *cSurface = cairo_svg_surface_create (filename, renderInfo-><a class="code" href="structgerbv__render__info__t.html#c1f647d0380e07c39a350f21a37e7a5c">displayWidth</a>,
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|
<a name="l00167"></a>00167 renderInfo-><a class="code" href="structgerbv__render__info__t.html#465fcc1f9e903179b0f44ac028ad7dbc">displayHeight</a>);
|
|
<a name="l00168"></a>00168 exportimage_render_to_surface_and_destroy (gerbvProject, cSurface, renderInfo, filename);
|
|
<a name="l00169"></a>00169 <span class="preprocessor">#endif</span>
|
|
<a name="l00170"></a>00170 <span class="preprocessor"></span>}
|
|
<a name="l00171"></a>00171
|
|
<a name="l00172"></a>00172 <span class="preprocessor">#ifdef EXPORT_PNG</span>
|
|
<a name="l00173"></a>00173 <span class="preprocessor"></span><span class="preprocessor">#ifdef RENDER_USING_GDK</span>
|
|
<a name="l00174"></a>00174 <span class="preprocessor"></span><span class="keyword">static</span> gboolean
|
|
<a name="l00175"></a>00175 exportimage_save_pixbuf_to_file (GdkPixbuf *pixbuf, gchar <span class="keyword">const</span>* filename)
|
|
<a name="l00176"></a>00176 {
|
|
<a name="l00177"></a>00177 FILE *handle;
|
|
<a name="l00178"></a>00178 <span class="keywordtype">int</span> width, height, depth, rowstride;
|
|
<a name="l00179"></a>00179 guchar *pixels;
|
|
<a name="l00180"></a>00180 png_structp png_ptr;
|
|
<a name="l00181"></a>00181 png_infop info_ptr;
|
|
<a name="l00182"></a>00182 png_text text[2];
|
|
<a name="l00183"></a>00183 png_byte **row_ptr;
|
|
<a name="l00184"></a>00184 <span class="keywordtype">int</span> i;
|
|
<a name="l00185"></a>00185
|
|
<a name="l00186"></a>00186 g_return_val_if_fail (pixbuf != NULL, FALSE);
|
|
<a name="l00187"></a>00187 g_return_val_if_fail (filename != NULL, FALSE);
|
|
<a name="l00188"></a>00188 g_return_val_if_fail (filename[0] != <span class="charliteral">'\0'</span>, FALSE);
|
|
<a name="l00189"></a>00189
|
|
<a name="l00190"></a>00190 handle = fopen (filename, <span class="stringliteral">"wb"</span>);
|
|
<a name="l00191"></a>00191 <span class="keywordflow">if</span> (handle == NULL) {
|
|
<a name="l00192"></a>00192 <span class="keywordflow">return</span> FALSE;
|
|
<a name="l00193"></a>00193 }
|
|
<a name="l00194"></a>00194
|
|
<a name="l00195"></a>00195 png_ptr = png_create_write_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
|
|
<a name="l00196"></a>00196 <span class="keywordflow">if</span> (png_ptr == NULL) {
|
|
<a name="l00197"></a>00197 fclose (handle);
|
|
<a name="l00198"></a>00198 <span class="keywordflow">return</span> FALSE;
|
|
<a name="l00199"></a>00199 }
|
|
<a name="l00200"></a>00200
|
|
<a name="l00201"></a>00201 info_ptr = png_create_info_struct (png_ptr);
|
|
<a name="l00202"></a>00202 <span class="keywordflow">if</span> (info_ptr == NULL) {
|
|
<a name="l00203"></a>00203 png_destroy_write_struct (&png_ptr, (png_infopp)NULL);
|
|
<a name="l00204"></a>00204 fclose (handle);
|
|
<a name="l00205"></a>00205 <span class="keywordflow">return</span> FALSE;
|
|
<a name="l00206"></a>00206 }
|
|
<a name="l00207"></a>00207
|
|
<a name="l00208"></a>00208 png_init_io (png_ptr, handle);
|
|
<a name="l00209"></a>00209
|
|
<a name="l00210"></a>00210 width = gdk_pixbuf_get_width (pixbuf);
|
|
<a name="l00211"></a>00211 height = gdk_pixbuf_get_height (pixbuf);
|
|
<a name="l00212"></a>00212 depth = gdk_pixbuf_get_bits_per_sample (pixbuf);
|
|
<a name="l00213"></a>00213 pixels = gdk_pixbuf_get_pixels (pixbuf);
|
|
<a name="l00214"></a>00214 rowstride = gdk_pixbuf_get_rowstride (pixbuf);
|
|
<a name="l00215"></a>00215
|
|
<a name="l00216"></a>00216 png_set_IHDR (png_ptr, info_ptr, width, height,
|
|
<a name="l00217"></a>00217 depth, PNG_COLOR_TYPE_RGB,
|
|
<a name="l00218"></a>00218 PNG_INTERLACE_NONE,
|
|
<a name="l00219"></a>00219 PNG_COMPRESSION_TYPE_DEFAULT,
|
|
<a name="l00220"></a>00220 PNG_FILTER_TYPE_DEFAULT);
|
|
<a name="l00221"></a>00221
|
|
<a name="l00222"></a>00222 <span class="comment">/* Some text to go with the png image */</span>
|
|
<a name="l00223"></a>00223 text[0].key = <span class="stringliteral">"Title"</span>;
|
|
<a name="l00224"></a>00224 text[0].text = g_strdup(filename);
|
|
<a name="l00225"></a>00225 text[0].compression = PNG_TEXT_COMPRESSION_NONE;
|
|
<a name="l00226"></a>00226 text[1].key = <span class="stringliteral">"Generator"</span>;
|
|
<a name="l00227"></a>00227 text[1].text = <span class="stringliteral">"gerbv"</span>;
|
|
<a name="l00228"></a>00228 text[1].compression = PNG_TEXT_COMPRESSION_NONE;
|
|
<a name="l00229"></a>00229 png_set_text (png_ptr, info_ptr, text, 2);
|
|
<a name="l00230"></a>00230 g_free (text[0].text);
|
|
<a name="l00231"></a>00231 <span class="comment">/* Write header data */</span>
|
|
<a name="l00232"></a>00232 png_write_info (png_ptr, info_ptr);
|
|
<a name="l00233"></a>00233
|
|
<a name="l00234"></a>00234 <span class="comment">/* Build up a vector of row pointers */</span>
|
|
<a name="l00235"></a>00235 row_ptr = (png_byte **)g_malloc(height * <span class="keyword">sizeof</span>(png_byte *));
|
|
<a name="l00236"></a>00236 <span class="keywordflow">for</span> (i = 0; i < height; i++) {
|
|
<a name="l00237"></a>00237 row_ptr[i] = (png_byte *)pixels;
|
|
<a name="l00238"></a>00238 pixels += rowstride;
|
|
<a name="l00239"></a>00239 }
|
|
<a name="l00240"></a>00240
|
|
<a name="l00241"></a>00241 <span class="comment">/* Write it and free the row vector */</span>
|
|
<a name="l00242"></a>00242 png_write_image(png_ptr, row_ptr);
|
|
<a name="l00243"></a>00243 g_free(row_ptr);
|
|
<a name="l00244"></a>00244
|
|
<a name="l00245"></a>00245 <span class="comment">/* Finish of PNG writing */</span>
|
|
<a name="l00246"></a>00246 png_write_end (png_ptr, info_ptr);
|
|
<a name="l00247"></a>00247 png_destroy_write_struct (&png_ptr, &info_ptr);
|
|
<a name="l00248"></a>00248
|
|
<a name="l00249"></a>00249 fclose (handle);
|
|
<a name="l00250"></a>00250 <span class="keywordflow">return</span> TRUE;
|
|
<a name="l00251"></a>00251 } <span class="comment">/* pixbuf_to_file_as_png */</span>
|
|
<a name="l00252"></a>00252 <span class="preprocessor">#endif</span>
|
|
<a name="l00253"></a>00253 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
|
|
</pre></div></div>
|
|
<hr size="1"><address style="text-align: right;"><small>Generated on Tue Aug 19 00:14:48 2008 for gerbv by
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|
<a href="http://www.doxygen.org/index.html">
|
|
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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</body>
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</html>
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