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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<h1>plsdlbmp.h</h1><div class="fragment"><pre>00001 <span class="comment">/*</span>
00002 <span class="comment">/--------------------------------------------------------------------</span>
00003 <span class="comment">|</span>
00004 <span class="comment">| $Id: plsdlbmp_8h-source.html,v 1.3 2004/07/28 15:15:29 uzadow Exp $</span>
00005 <span class="comment">|</span>
00006 <span class="comment">| Copyright (c) 1996-2003 Ulrich von Zadow</span>
00007 <span class="comment">|</span>
00008 <span class="comment">\--------------------------------------------------------------------</span>
00009 <span class="comment">*/</span>
00010
00011 <span class="preprocessor">#ifndef INCL_PLSDLBMP</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_PLSDLBMP</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#ifndef INCL_PLBITMAP</span>
00015 <span class="preprocessor"></span><span class="preprocessor">#include "plbitmap.h"</span>
00016 <span class="preprocessor">#endif</span>
00017 <span class="preprocessor"></span>
00018 <span class="preprocessor">#include <SDL/SDL.h></span>
00019 <span class="comment"></span>
00020 <span class="comment">//! Manipulates uncompressed bitmaps stored as SDL surfaces.</span>
00021 <span class="comment">//! 32 bpp only. </span>
<a name="l00022"></a><a class="code" href="classPLSDLBmp.html">00022</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> : <span class="keyword">public</span> <a class="code" href="classPLBmp.html">PLBmp</a>
00023 {
00024
00025 <span class="keyword">public</span>:<span class="comment"></span>
00026 <span class="comment"> //! Creates an empty bitmap.</span>
00027 <span class="comment"></span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a>
00028 ( <span class="keywordtype">int</span> SurfFlags = SDL_SWSURFACE
00029 );
00030 <span class="comment"></span>
00031 <span class="comment"> //! Destroys the bitmap.</span>
00032 <span class="comment"></span> <span class="keyword">virtual</span> ~<a class="code" href="classPLSDLBmp.html">PLSDLBmp</a>
00033 ();
00034 <span class="comment"></span>
00035 <span class="comment"> //! Copy constructor</span>
00036 <span class="comment"></span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a>
00037 ( <span class="keyword">const</span> <a class="code" href="classPLBmpBase.html">PLBmpBase</a> &Orig
00038 );
00039 <span class="comment"></span>
00040 <span class="comment"> //! Copy constructor</span>
00041 <span class="comment"></span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a>
00042 ( <span class="keyword">const</span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> &Orig
00043 );
00044 <span class="comment"></span>
00045 <span class="comment"> //! Attach to an existing SDL surface. After the attach, the </span>
00046 <span class="comment"> //! bitmap object besomes the owner of the surface. Any previous contents</span>
00047 <span class="comment"> //! are destroyed.</span>
00048 <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classPLSDLBmp.html#a4">Attach</a>
00049 ( SDL_Surface * pSurface
00050 );
00051
00052 <span class="preprocessor">#ifdef _DEBUG</span>
00053 <span class="preprocessor"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> AssertValid
00054 () <span class="keyword">const</span>; <span class="comment">// Tests internal object state</span>
00055 <span class="preprocessor">#endif</span>
00056 <span class="preprocessor"></span><span class="comment"></span>
00057 <span class="comment"> //! Assignment operator.</span>
00058 <span class="comment"></span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> &<span class="keyword">operator</span>=
00059 ( <span class="keyword">const</span> <a class="code" href="classPLBmpBase.html">PLBmpBase</a> &Orig
00060 );
00061 <span class="comment"></span>
00062 <span class="comment"> //! Assignment operator.</span>
00063 <span class="comment"></span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> &<span class="keyword">operator</span>=
00064 ( <span class="keyword">const</span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> &Orig
00065 );
00066
00067 <span class="comment">// PLSDLBmp information</span>
00068 <span class="comment"></span>
00069 <span class="comment"> //! Returns a pointer to the internal SDL surface.</span>
00070 <span class="comment"> //! Using this pointer, you can bring SDL and paintlib data out of sync</span>
00071 <span class="comment"> //! easily. Handle with care.</span>
00072 <span class="comment"></span> SDL_Surface * <a class="code" href="classPLSDLBmp.html#a7">GetSurface</a>
00073 ();
00074 <span class="comment"></span>
00075 <span class="comment"> //! Returns the amount of memory used by the object.</span>
00076 <span class="comment"></span> <span class="keywordtype">long</span> <a class="code" href="classPLSDLBmp.html#a8">GetMemUsed</a>
00077 ();
00078 <span class="comment"></span>
00079 <span class="comment"> //! Returns number of bytes used per line.</span>
00080 <span class="comment"></span> <span class="keywordtype">long</span> <a class="code" href="classPLSDLBmp.html#a9">GetBytesPerLine</a>
00081 ();
00082
00083 <span class="comment">// Static functions</span>
00084 <span class="comment"></span>
00085 <span class="comment"> //! Returns memory needed by a bitmap with the specified attributes.</span>
00086 <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">long</span> <a class="code" href="classPLSDLBmp.html#e0">GetMemNeeded</a>
00087 ( PLLONG width,
00088 PLLONG height,
00089 PLWORD BitsPerPixel
00090 );
00091 <span class="comment"></span>
00092 <span class="comment"> //! Returns memory needed by bitmap bits.</span>
00093 <span class="comment"></span> <span class="keyword">static</span> <span class="keywordtype">long</span> <a class="code" href="classPLSDLBmp.html#e1">GetBitsMemNeeded</a>
00094 ( PLLONG width,
00095 PLLONG height,
00096 PLWORD BitsPerPixel
00097 );
00098
00099
00100 <span class="keyword">protected</span>:
00101 <span class="comment">// Local functions</span>
00102
00103 <span class="comment">// Create a new bitmap with uninitialized bits. Assumes no memory</span>
00104 <span class="comment">// is allocated yet.</span>
00105 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLSDLBmp.html#b0">internalCreate</a>
00106 ( PLLONG Width,
00107 PLLONG Height,
00108 PLWORD BitsPerPixel,
00109 <span class="keywordtype">bool</span> bAlphaChannel,
00110 <span class="keywordtype">bool</span> bIsGreyscale
00111 );
00112
00113 <span class="comment">// Deletes memory allocated by member variables.</span>
00114 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLSDLBmp.html#b1">freeMembers</a>
00115 ();
00116
00117 <span class="comment">// Initializes internal table of line addresses.</span>
00118 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLSDLBmp.html#b2">initLineArray</a>
00119 ();
00120
00121 <span class="keyword">private</span>:
00122 SDL_Surface * m_pSurface; <span class="comment">// Pointer to the bits.</span>
00123 <span class="keywordtype">int</span> m_SurfFlags;
00124 };
00125
00126 <span class="comment">// Note that _both_ these copy constructors are needed. If only the</span>
00127 <span class="comment">// second one is there, MSVC generates a default copy</span>
00128 <span class="comment">// constructor anyway :-(.</span>
00129 <span class="keyword">inline</span> <a class="code" href="classPLSDLBmp.html#a0">PLSDLBmp::PLSDLBmp</a>
<a name="l00130"></a><a class="code" href="classPLSDLBmp.html#a3">00130</a> ( <span class="keyword">const</span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> &Orig
00131 )
00132 : <a class="code" href="classPLBmp.html">PLBmp</a> ()
00133 {
00134 m_SurfFlags = Orig.m_SurfFlags;
00135 internalCopy (Orig);
00136 }
00137
00138 <span class="keyword">inline</span> <a class="code" href="classPLSDLBmp.html#a0">PLSDLBmp::PLSDLBmp</a>
<a name="l00139"></a><a class="code" href="classPLSDLBmp.html#a2">00139</a> ( <span class="keyword">const</span> <a class="code" href="classPLBmpBase.html">PLBmpBase</a> &Orig
00140 )
00141 : <a class="code" href="classPLBmp.html">PLBmp</a> ()
00142 {
00143 m_SurfFlags = SDL_SWSURFACE;
00144 internalCopy (Orig);
00145 }
00146
00147 <span class="keyword">inline</span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> & PLSDLBmp::operator=
<a name="l00148"></a><a class="code" href="classPLSDLBmp.html#a5">00148</a> ( <span class="keyword">const</span> <a class="code" href="classPLBmpBase.html">PLBmpBase</a> &Orig
00149 )
00150 {
00151 <a class="code" href="classPLBmp.html#a2">PLBmp::operator=</a>(Orig);
00152 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
00153 }
00154
00155 <span class="keyword">inline</span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> & PLSDLBmp::operator=
<a name="l00156"></a><a class="code" href="classPLSDLBmp.html#a6">00156</a> ( <span class="keyword">const</span> <a class="code" href="classPLSDLBmp.html">PLSDLBmp</a> &Orig
00157 )
00158 {
00159 m_SurfFlags = Orig.<a class="code" href="classPLSDLBmp.html#r1">m_SurfFlags</a>;
00160 <a class="code" href="classPLBmp.html#a2">PLBmp::operator=</a>(Orig);
00161 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
00162 }
00163
00164
00165 <span class="preprocessor">#endif</span>
00166 <span class="preprocessor"></span><span class="comment">/*</span>
00167 <span class="comment">/--------------------------------------------------------------------</span>
00168 <span class="comment">|</span>
00169 <span class="comment">| $Log: plsdlbmp_8h-source.html,v $
00169 <span class="comment">| Revision 1.3 2004/07/28 15:15:29 uzadow
00169 <span class="comment">| Added missing documentation files.
00169 <span class="comment">|</span>
00170 <span class="comment">| Revision 1.3 2004/06/15 14:32:22 uzadow</span>
00171 <span class="comment">| Linux build fix.</span>
00172 <span class="comment">|</span>
00173 <span class="comment">| Revision 1.2 2003/03/08 15:15:51 uzadow</span>
00174 <span class="comment">| Added PLSDLBmp::Attach().</span>
00175 <span class="comment">|</span>
00176 <span class="comment">| Revision 1.1 2003/03/08 14:32:08 uzadow</span>
00177 <span class="comment">| Added support for bitmaps in SDL surface format.</span>
00178 <span class="comment">|</span>
00179 <span class="comment">|</span>
00180 <span class="comment">\--------------------------------------------------------------------</span>
00181 <span class="comment">*/</span>
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