<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.5"/>
<title>libg15render: screen.c File Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
$(document).ready(initResizable);
$(window).load(resizeHeight);
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">libg15render
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.5 -->
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul>
</div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
<div id="nav-tree">
<div id="nav-tree-contents">
<div id="nav-sync" class="sync"></div>
</div>
</div>
<div id="splitbar" style="-moz-user-select:none;"
class="ui-resizable-handle">
</div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('screen_8c.html','');});
</script>
<div id="doc-content">
<div class="header">
<div class="summary">
<a href="#func-members">Functions</a> </div>
<div class="headertitle">
<div class="title">screen.c File Reference</div> </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><code>#include "<a class="el" href="libg15render_8h_source.html">libg15render.h</a>"</code><br/>
</div>
<p><a href="screen_8c_source.html">Go to the source code of this file.</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a79439b23f960f2701cd33b24d98adc88"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="screen_8c.html#a79439b23f960f2701cd33b24d98adc88">g15r_clearScreen</a> (<a class="el" href="structg15canvas.html">g15canvas</a> *canvas, int color)</td></tr>
<tr class="memdesc:a79439b23f960f2701cd33b24d98adc88"><td class="mdescLeft"> </td><td class="mdescRight">Fills the screen with pixels of color. <a href="#a79439b23f960f2701cd33b24d98adc88">More...</a><br/></td></tr>
<tr class="separator:a79439b23f960f2701cd33b24d98adc88"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ab71c2319a2892031f45c7cb685387d76"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="screen_8c.html#ab71c2319a2892031f45c7cb685387d76">g15r_getPixel</a> (<a class="el" href="structg15canvas.html">g15canvas</a> *canvas, unsigned int x, unsigned int y)</td></tr>
<tr class="memdesc:ab71c2319a2892031f45c7cb685387d76"><td class="mdescLeft"> </td><td class="mdescRight">Gets the value of the pixel at (x, y) <a href="#ab71c2319a2892031f45c7cb685387d76">More...</a><br/></td></tr>
<tr class="separator:ab71c2319a2892031f45c7cb685387d76"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9fca67171d0100a4bde88a9c8f6023ab"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="screen_8c.html#a9fca67171d0100a4bde88a9c8f6023ab">g15r_initCanvas</a> (<a class="el" href="structg15canvas.html">g15canvas</a> *canvas)</td></tr>
<tr class="memdesc:a9fca67171d0100a4bde88a9c8f6023ab"><td class="mdescLeft"> </td><td class="mdescRight">Clears the canvas and resets the mode switches. <a href="#a9fca67171d0100a4bde88a9c8f6023ab">More...</a><br/></td></tr>
<tr class="separator:a9fca67171d0100a4bde88a9c8f6023ab"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a55ea1758ff829b3cab04383f8a5eccd4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="screen_8c.html#a55ea1758ff829b3cab04383f8a5eccd4">g15r_setPixel</a> (<a class="el" href="structg15canvas.html">g15canvas</a> *canvas, unsigned int x, unsigned int y, int val)</td></tr>
<tr class="memdesc:a55ea1758ff829b3cab04383f8a5eccd4"><td class="mdescLeft"> </td><td class="mdescRight">Sets the value of the pixel at (x, y) <a href="#a55ea1758ff829b3cab04383f8a5eccd4">More...</a><br/></td></tr>
<tr class="separator:a55ea1758ff829b3cab04383f8a5eccd4"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="a79439b23f960f2701cd33b24d98adc88"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void g15r_clearScreen </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structg15canvas.html">g15canvas</a> * </td>
<td class="paramname"><em>canvas</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>color</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Fills the screen with pixels of color. </p>
<p>Clears the screen and fills it with pixels of color</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">canvas</td><td>A pointer to a <a class="el" href="structg15canvas.html" title="This structure holds the data need to render objects to the LCD screen. ">g15canvas</a> struct in which the buffer to be operated on is found. </td></tr>
<tr><td class="paramname">color</td><td>Screen will be filled with this color. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="screen_8c_source.html#l00080">80</a> of file <a class="el" href="screen_8c_source.html">screen.c</a>.</p>
<p>References <a class="el" href="libg15render_8h_source.html#l00039">g15canvas::buffer</a>, and <a class="el" href="libg15render_8h_source.html#l00022">G15_BUFFER_LEN</a>.</p>
<div class="fragment"><div class="line"><a name="l00081"></a><span class="lineno"> 81</span> {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  memset (canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>, (color ? 0xFF : 0), <a class="code" href="libg15render_8h.html#abe1086e7ddda5f7600019031f76fb7b6">G15_BUFFER_LEN</a>);</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> }</div>
<div class="ttc" id="structg15canvas_html_a4216bb87453363bae6c4418583015e76"><div class="ttname"><a href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">g15canvas::buffer</a></div><div class="ttdeci">unsigned char buffer[G15_BUFFER_LEN]</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00039">libg15render.h:39</a></div></div>
<div class="ttc" id="libg15render_8h_html_abe1086e7ddda5f7600019031f76fb7b6"><div class="ttname"><a href="libg15render_8h.html#abe1086e7ddda5f7600019031f76fb7b6">G15_BUFFER_LEN</a></div><div class="ttdeci">#define G15_BUFFER_LEN</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00022">libg15render.h:22</a></div></div>
</div><!-- fragment -->
</div>
</div>
<a class="anchor" id="ab71c2319a2892031f45c7cb685387d76"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">int g15r_getPixel </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structg15canvas.html">g15canvas</a> * </td>
<td class="paramname"><em>canvas</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>x</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>y</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Gets the value of the pixel at (x, y) </p>
<p>Retrieves the value of the pixel at (x, y)</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">canvas</td><td>A pointer to a <a class="el" href="structg15canvas.html" title="This structure holds the data need to render objects to the LCD screen. ">g15canvas</a> struct in which the buffer to be operated on is found. </td></tr>
<tr><td class="paramname">x</td><td>X offset for pixel to be retrieved. </td></tr>
<tr><td class="paramname">y</td><td>Y offset for pixel to be retrieved. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="screen_8c_source.html#l00029">29</a> of file <a class="el" href="screen_8c_source.html">screen.c</a>.</p>
<p>References <a class="el" href="libg15render_8h_source.html#l00039">g15canvas::buffer</a>, <a class="el" href="libg15render_8h_source.html#l00021">BYTE_SIZE</a>, <a class="el" href="libg15render_8h_source.html#l00024">G15_LCD_HEIGHT</a>, and <a class="el" href="libg15render_8h_source.html#l00025">G15_LCD_WIDTH</a>.</p>
<p>Referenced by <a class="el" href="pixel_8c_source.html#l00045">g15r_pixelReverseFill()</a>, and <a class="el" href="screen_8c_source.html#l00050">g15r_setPixel()</a>.</p>
<div class="fragment"><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> {</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">if</span> (x >= <a class="code" href="libg15render_8h.html#a1f1337297f4dd068563a5ee3db597fa0">G15_LCD_WIDTH</a> || y >= <a class="code" href="libg15render_8h.html#ac4e62328af8f7e892528121bd90079cf">G15_LCD_HEIGHT</a>)</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pixel_offset = y * <a class="code" href="libg15render_8h.html#a1f1337297f4dd068563a5ee3db597fa0">G15_LCD_WIDTH</a> + x;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> byte_offset = pixel_offset / <a class="code" href="libg15render_8h.html#a86fd4404b140711fdb77326609c0f393">BYTE_SIZE</a>;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bit_offset = 7 - (pixel_offset % <a class="code" href="libg15render_8h.html#a86fd4404b140711fdb77326609c0f393">BYTE_SIZE</a>);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">return</span> (canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>[byte_offset] & (1 << bit_offset)) >> bit_offset;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> }</div>
<div class="ttc" id="libg15render_8h_html_a1f1337297f4dd068563a5ee3db597fa0"><div class="ttname"><a href="libg15render_8h.html#a1f1337297f4dd068563a5ee3db597fa0">G15_LCD_WIDTH</a></div><div class="ttdeci">#define G15_LCD_WIDTH</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00025">libg15render.h:25</a></div></div>
<div class="ttc" id="structg15canvas_html_a4216bb87453363bae6c4418583015e76"><div class="ttname"><a href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">g15canvas::buffer</a></div><div class="ttdeci">unsigned char buffer[G15_BUFFER_LEN]</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00039">libg15render.h:39</a></div></div>
<div class="ttc" id="libg15render_8h_html_a86fd4404b140711fdb77326609c0f393"><div class="ttname"><a href="libg15render_8h.html#a86fd4404b140711fdb77326609c0f393">BYTE_SIZE</a></div><div class="ttdeci">#define BYTE_SIZE</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00021">libg15render.h:21</a></div></div>
<div class="ttc" id="libg15render_8h_html_ac4e62328af8f7e892528121bd90079cf"><div class="ttname"><a href="libg15render_8h.html#ac4e62328af8f7e892528121bd90079cf">G15_LCD_HEIGHT</a></div><div class="ttdeci">#define G15_LCD_HEIGHT</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00024">libg15render.h:24</a></div></div>
</div><!-- fragment -->
</div>
</div>
<a class="anchor" id="a9fca67171d0100a4bde88a9c8f6023ab"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void g15r_initCanvas </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structg15canvas.html">g15canvas</a> * </td>
<td class="paramname"><em>canvas</em></td><td>)</td>
<td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Clears the canvas and resets the mode switches. </p>
<p>Clears the screen and resets the mode values for a canvas</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">canvas</td><td>A pointer to a <a class="el" href="structg15canvas.html" title="This structure holds the data need to render objects to the LCD screen. ">g15canvas</a> struct </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="screen_8c_source.html#l00091">91</a> of file <a class="el" href="screen_8c_source.html">screen.c</a>.</p>
<p>References <a class="el" href="libg15render_8h_source.html#l00039">g15canvas::buffer</a>, <a class="el" href="libg15render_8h_source.html#l00047">g15canvas::ftLib</a>, <a class="el" href="libg15render_8h_source.html#l00022">G15_BUFFER_LEN</a>, <a class="el" href="libg15render_8h_source.html#l00043">g15canvas::mode_cache</a>, <a class="el" href="libg15render_8h_source.html#l00045">g15canvas::mode_reverse</a>, and <a class="el" href="libg15render_8h_source.html#l00041">g15canvas::mode_xor</a>.</p>
<div class="fragment"><div class="line"><a name="l00092"></a><span class="lineno"> 92</span> {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  memset (canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>, 0, <a class="code" href="libg15render_8h.html#abe1086e7ddda5f7600019031f76fb7b6">G15_BUFFER_LEN</a>);</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  canvas-><a class="code" href="structg15canvas.html#ac7c366d9889cc757beea4d3679bf4a15">mode_cache</a> = 0;</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  canvas-><a class="code" href="structg15canvas.html#ae840b2364440434884f8c34a5be6150d">mode_reverse</a> = 0;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  canvas-><a class="code" href="structg15canvas.html#a09c9ae8f508cbfd0c3dc8e2a239fc1b5">mode_xor</a> = 0;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="preprocessor">#ifdef TTF_SUPPORT</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="preprocessor"></span> <span class="keywordflow">if</span> (FT_Init_FreeType (&canvas-><a class="code" href="structg15canvas.html#a497342d92d60f2bd38f26f539422c77c">ftLib</a>))</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  printf (<span class="stringliteral">"Freetype couldnt initialise\n"</span>);</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor"></span>}</div>
<div class="ttc" id="structg15canvas_html_ae840b2364440434884f8c34a5be6150d"><div class="ttname"><a href="structg15canvas.html#ae840b2364440434884f8c34a5be6150d">g15canvas::mode_reverse</a></div><div class="ttdeci">int mode_reverse</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00045">libg15render.h:45</a></div></div>
<div class="ttc" id="structg15canvas_html_a4216bb87453363bae6c4418583015e76"><div class="ttname"><a href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">g15canvas::buffer</a></div><div class="ttdeci">unsigned char buffer[G15_BUFFER_LEN]</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00039">libg15render.h:39</a></div></div>
<div class="ttc" id="structg15canvas_html_a09c9ae8f508cbfd0c3dc8e2a239fc1b5"><div class="ttname"><a href="structg15canvas.html#a09c9ae8f508cbfd0c3dc8e2a239fc1b5">g15canvas::mode_xor</a></div><div class="ttdeci">int mode_xor</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00041">libg15render.h:41</a></div></div>
<div class="ttc" id="libg15render_8h_html_abe1086e7ddda5f7600019031f76fb7b6"><div class="ttname"><a href="libg15render_8h.html#abe1086e7ddda5f7600019031f76fb7b6">G15_BUFFER_LEN</a></div><div class="ttdeci">#define G15_BUFFER_LEN</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00022">libg15render.h:22</a></div></div>
<div class="ttc" id="structg15canvas_html_ac7c366d9889cc757beea4d3679bf4a15"><div class="ttname"><a href="structg15canvas.html#ac7c366d9889cc757beea4d3679bf4a15">g15canvas::mode_cache</a></div><div class="ttdeci">int mode_cache</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00043">libg15render.h:43</a></div></div>
<div class="ttc" id="structg15canvas_html_a497342d92d60f2bd38f26f539422c77c"><div class="ttname"><a href="structg15canvas.html#a497342d92d60f2bd38f26f539422c77c">g15canvas::ftLib</a></div><div class="ttdeci">FT_Library ftLib</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00047">libg15render.h:47</a></div></div>
</div><!-- fragment -->
</div>
</div>
<a class="anchor" id="a55ea1758ff829b3cab04383f8a5eccd4"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">void g15r_setPixel </td>
<td>(</td>
<td class="paramtype"><a class="el" href="structg15canvas.html">g15canvas</a> * </td>
<td class="paramname"><em>canvas</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>x</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">unsigned int </td>
<td class="paramname"><em>y</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>val</em> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td>
</tr>
</table>
</div><div class="memdoc">
<p>Sets the value of the pixel at (x, y) </p>
<p>Sets the value of the pixel at (x, y)</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">canvas</td><td>A pointer to a <a class="el" href="structg15canvas.html" title="This structure holds the data need to render objects to the LCD screen. ">g15canvas</a> struct in which the buffer to be operated on is found. </td></tr>
<tr><td class="paramname">x</td><td>X offset for pixel to be set. </td></tr>
<tr><td class="paramname">y</td><td>Y offset for pixel to be set. </td></tr>
<tr><td class="paramname">val</td><td>Value to which pixel should be set. </td></tr>
</table>
</dd>
</dl>
<p>Definition at line <a class="el" href="screen_8c_source.html#l00050">50</a> of file <a class="el" href="screen_8c_source.html">screen.c</a>.</p>
<p>References <a class="el" href="libg15render_8h_source.html#l00039">g15canvas::buffer</a>, <a class="el" href="libg15render_8h_source.html#l00021">BYTE_SIZE</a>, <a class="el" href="libg15render_8h_source.html#l00024">G15_LCD_HEIGHT</a>, <a class="el" href="libg15render_8h_source.html#l00025">G15_LCD_WIDTH</a>, <a class="el" href="screen_8c_source.html#l00029">g15r_getPixel()</a>, <a class="el" href="libg15render_8h_source.html#l00045">g15canvas::mode_reverse</a>, and <a class="el" href="libg15render_8h_source.html#l00041">g15canvas::mode_xor</a>.</p>
<p>Referenced by <a class="el" href="text_8c_source.html#l00233">draw_ttf_char()</a>, <a class="el" href="pixel_8c_source.html#l00203">g15r_drawCircle()</a>, <a class="el" href="pixel_8c_source.html#l00411">g15r_drawIcon()</a>, <a class="el" href="pixel_8c_source.html#l00099">g15r_drawLine()</a>, <a class="el" href="pixel_8c_source.html#l00252">g15r_drawRoundBox()</a>, <a class="el" href="pixel_8c_source.html#l00443">g15r_drawSprite()</a>, <a class="el" href="pixel_8c_source.html#l00163">g15r_pixelBox()</a>, <a class="el" href="pixel_8c_source.html#l00074">g15r_pixelOverlay()</a>, <a class="el" href="pixel_8c_source.html#l00045">g15r_pixelReverseFill()</a>, <a class="el" href="text_8c_source.html#l00022">g15r_renderCharacterLarge()</a>, <a class="el" href="text_8c_source.html#l00050">g15r_renderCharacterMedium()</a>, and <a class="el" href="text_8c_source.html#l00077">g15r_renderCharacterSmall()</a>.</p>
<div class="fragment"><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> {</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (x >= <a class="code" href="libg15render_8h.html#a1f1337297f4dd068563a5ee3db597fa0">G15_LCD_WIDTH</a> || y >= <a class="code" href="libg15render_8h.html#ac4e62328af8f7e892528121bd90079cf">G15_LCD_HEIGHT</a>)</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> pixel_offset = y * <a class="code" href="libg15render_8h.html#a1f1337297f4dd068563a5ee3db597fa0">G15_LCD_WIDTH</a> + x;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> byte_offset = pixel_offset / <a class="code" href="libg15render_8h.html#a86fd4404b140711fdb77326609c0f393">BYTE_SIZE</a>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> bit_offset = 7 - (pixel_offset % <a class="code" href="libg15render_8h.html#a86fd4404b140711fdb77326609c0f393">BYTE_SIZE</a>);</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">if</span> (canvas-><a class="code" href="structg15canvas.html#a09c9ae8f508cbfd0c3dc8e2a239fc1b5">mode_xor</a>)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  val ^= <a class="code" href="libg15render_8h.html#ab71c2319a2892031f45c7cb685387d76">g15r_getPixel</a> (canvas, x, y);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (canvas-><a class="code" href="structg15canvas.html#ae840b2364440434884f8c34a5be6150d">mode_reverse</a>)</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  val = !val;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (val)</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>[byte_offset] =</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>[byte_offset] | 1 << bit_offset;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>[byte_offset] =</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  canvas-><a class="code" href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">buffer</a>[byte_offset] & ~(1 << bit_offset);</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> }</div>
<div class="ttc" id="libg15render_8h_html_ab71c2319a2892031f45c7cb685387d76"><div class="ttname"><a href="libg15render_8h.html#ab71c2319a2892031f45c7cb685387d76">g15r_getPixel</a></div><div class="ttdeci">int g15r_getPixel(g15canvas *canvas, unsigned int x, unsigned int y)</div><div class="ttdoc">Gets the value of the pixel at (x, y) </div><div class="ttdef"><b>Definition:</b> <a href="screen_8c_source.html#l00029">screen.c:29</a></div></div>
<div class="ttc" id="structg15canvas_html_ae840b2364440434884f8c34a5be6150d"><div class="ttname"><a href="structg15canvas.html#ae840b2364440434884f8c34a5be6150d">g15canvas::mode_reverse</a></div><div class="ttdeci">int mode_reverse</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00045">libg15render.h:45</a></div></div>
<div class="ttc" id="libg15render_8h_html_a1f1337297f4dd068563a5ee3db597fa0"><div class="ttname"><a href="libg15render_8h.html#a1f1337297f4dd068563a5ee3db597fa0">G15_LCD_WIDTH</a></div><div class="ttdeci">#define G15_LCD_WIDTH</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00025">libg15render.h:25</a></div></div>
<div class="ttc" id="structg15canvas_html_a4216bb87453363bae6c4418583015e76"><div class="ttname"><a href="structg15canvas.html#a4216bb87453363bae6c4418583015e76">g15canvas::buffer</a></div><div class="ttdeci">unsigned char buffer[G15_BUFFER_LEN]</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00039">libg15render.h:39</a></div></div>
<div class="ttc" id="structg15canvas_html_a09c9ae8f508cbfd0c3dc8e2a239fc1b5"><div class="ttname"><a href="structg15canvas.html#a09c9ae8f508cbfd0c3dc8e2a239fc1b5">g15canvas::mode_xor</a></div><div class="ttdeci">int mode_xor</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00041">libg15render.h:41</a></div></div>
<div class="ttc" id="libg15render_8h_html_a86fd4404b140711fdb77326609c0f393"><div class="ttname"><a href="libg15render_8h.html#a86fd4404b140711fdb77326609c0f393">BYTE_SIZE</a></div><div class="ttdeci">#define BYTE_SIZE</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00021">libg15render.h:21</a></div></div>
<div class="ttc" id="libg15render_8h_html_ac4e62328af8f7e892528121bd90079cf"><div class="ttname"><a href="libg15render_8h.html#ac4e62328af8f7e892528121bd90079cf">G15_LCD_HEIGHT</a></div><div class="ttdeci">#define G15_LCD_HEIGHT</div><div class="ttdef"><b>Definition:</b> <a href="libg15render_8h_source.html#l00024">libg15render.h:24</a></div></div>
</div><!-- fragment -->
</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="navelem"><a class="el" href="screen_8c.html">screen.c</a></li>
<li class="footer">Generated on Tue Oct 22 2013 07:42:17 for libg15render by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.5 </li>
</ul>
</div>
</body>
</html>
