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<h1>pldibsect.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: pldibsect_8h-source.html,v 1.2 2004/09/15 15:26:29 uzadow Exp $</span>
00005 <span class="comment">|</span>
00006 <span class="comment">| Copyright (c) 1996-2002 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_DIBSECT</span>
00012 <span class="preprocessor"></span><span class="preprocessor">#define INCL_DIBSECT</span>
00013 <span class="preprocessor"></span>
00014 <span class="preprocessor">#ifndef INCL_WINBMP</span>
00015 <span class="preprocessor"></span><span class="preprocessor">#include "plwinbmp.h"</span>
00016 <span class="preprocessor">#endif</span>
00017 <span class="preprocessor"></span><span class="comment"></span>
00018 <span class="comment">//! This is a windows DIBSection wrapped in a PLBmp-derived class.</span>
00019 <span class="comment">//! It can be used just like a PLWinBmp can be used. In addition,</span>
00020 <span class="comment">//! PLDIBSection can give access to the bitmap as a GDI bitmap handle.</span>
00021 <span class="comment">//! This bitmap handle can be selected into a device context. All</span>
00022 <span class="comment">//! normal GDI drawing functions can be used to write on the bitmap</span>
00023 <span class="comment">//! in this way.</span>
00024 <span class="comment">//!</span>
00025 <span class="comment">//! Internally, PLDIBSections are stored with header and bits in two</span>
00026 <span class="comment">//! separate buffers.</span>
<a name="l00027"></a><a class="code" href="classPLDIBSection.html">00027</a> <span class="comment"></span><span class="keyword">class </span><a class="code" href="classPLDIBSection.html">PLDIBSection</a> : <span class="keyword">public</span> <a class="code" href="classPLWinBmp.html">PLWinBmp</a>
00028 {
00029
00030 <span class="keyword">public</span>:<span class="comment"></span>
00031 <span class="comment"> //! Creates an empty bitmap.</span>
00032 <span class="comment"></span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a>
00033 ();
00034 <span class="comment"></span>
00035 <span class="comment"> //! Destroys the bitmap.</span>
00036 <span class="comment"></span> <span class="keyword">virtual</span> ~<a class="code" href="classPLDIBSection.html">PLDIBSection</a>
00037 ();
00038 <span class="comment"></span>
00039 <span class="comment"> //! Copy constructor</span>
00040 <span class="comment"></span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a>
00041 ( <span class="keyword">const</span> <a class="code" href="classPLBmpBase.html">PLBmpBase</a> &Orig
00042 );
00043 <span class="comment"></span>
00044 <span class="comment"> //! Copy constructor</span>
00045 <span class="comment"></span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a>
00046 ( <span class="keyword">const</span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a> &Orig
00047 );
00048 <span class="comment"></span>
00049 <span class="comment"> //! Assignment operator.</span>
00050 <span class="comment"></span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a> &<span class="keyword">operator</span>=
00051 ( <a class="code" href="classPLBmpBase.html">PLBmpBase</a> <span class="keyword">const</span> &Orig
00052 );
00053 <span class="comment"></span>
00054 <span class="comment"> //! Assignment operator.</span>
00055 <span class="comment"></span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a> &<span class="keyword">operator</span>=
00056 ( <a class="code" href="classPLDIBSection.html">PLDIBSection</a> <span class="keyword">const</span> &Orig
00057 );
00058
00059 <span class="preprocessor">#ifdef _DEBUG</span>
00060 <span class="preprocessor"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> AssertValid
00061 () <span class="keyword">const</span>; <span class="comment">// Tests internal object state</span>
00062 <span class="preprocessor">#endif</span>
00063 <span class="preprocessor"></span><span class="comment"></span>
00064 <span class="comment"> //! Calling this function causes the windows DIBSection to be detached</span>
00065 <span class="comment"> //! from the PLDIBSection object. The bitmap data are not deleted in</span>
00066 <span class="comment"> //! this function. This means that the bitmap handle and</span>
00067 <span class="comment"> //! the bitmap memory (bits and BMI) must be deleted by some other object.</span>
00068 <span class="comment"> //! The PLDIBSection object is in the same state as after a constructor</span>
00069 <span class="comment"> //! call after this function is called.</span>
00070 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLDIBSection.html#a6">Detach</a>
00071 ();
00072
00073 <span class="comment">// PLDIBSection output</span>
00074 <span class="comment"></span>
00075 <span class="comment"> //! Draws the bitmap on the given device context using</span>
00076 <span class="comment"> //! BitBlt.</span>
00077 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLDIBSection.html#a7">Draw</a>
00078 ( HDC hDC,
00079 <span class="keywordtype">int</span> x,
00080 <span class="keywordtype">int</span> y,
00081 DWORD rop = SRCCOPY
00082 );
00083 <span class="comment"></span>
00084 <span class="comment"> //! Draws a portion of the bitmap on the given device context</span>
00085 <span class="comment"></span> <span class="keyword">virtual</span> BOOL <a class="code" href="classPLDIBSection.html#a8">DrawExtract</a>
00086 ( HDC hDC,
00087 POINT pntDest,
00088 RECT rcSrc
00089 );
00090
00091 <span class="comment">// PLDIBSection member access</span>
00092 <span class="comment"></span>
00093 <span class="comment"> //! Returns a GDI handle to the bitmap. This handle can be selected</span>
00094 <span class="comment"> //! into a DC and used in normal GDI operations.</span>
00095 <span class="comment"> //! Under Windows NT, GDI operations can be queued. This means that</span>
00096 <span class="comment"> //! a program running under NT must call GdiFlush() before the</span>
00097 <span class="comment"> //! DIBSection can be used again after GetHandle() has been called.</span>
00098 <span class="comment"> //! See the documentation for GdiFlush() for details.</span>
00099 <span class="comment"></span> HBITMAP <a class="code" href="classPLDIBSection.html#a9">GetHandle</a>
00100 ();
00101
00102
00103 <span class="keyword">protected</span>:
00104
00105 <span class="comment">// Protected callbacks</span>
00106 <span class="comment"></span>
00107 <span class="comment"> //! Create a new empty DIB. Bits are uninitialized.</span>
00108 <span class="comment"> //! Assumes that no memory is allocated before the call.</span>
00109 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLDIBSection.html#b0">internalCreate</a>
00110 ( LONG Width,
00111 LONG Height,
00112 <span class="keyword">const</span> PLPixelFormat& pf
00113 );
00114
00115 <span class="comment">// Creates a PLDIBSection from an existing bitmap pointer.</span>
00116 <span class="comment">// Assumes that no memory is allocated before the call.</span>
00117 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLDIBSection.html#b0">internalCreate</a>
00118 ( BITMAPINFOHEADER* pBMI
00119 );
00120 <span class="comment"></span>
00121 <span class="comment"> //! Deletes memory allocated by member variables.</span>
00122 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLDIBSection.html#b2">freeMembers</a>
00123 ();
00124 <span class="comment"></span>
00125 <span class="comment"> //! Creates a copy of the current bitmap in a global memory block</span>
00126 <span class="comment"> //! and returns a handle to this block.</span>
00127 <span class="comment"></span> <span class="keyword">virtual</span> HANDLE <a class="code" href="classPLDIBSection.html#b3">createCopyHandle</a>
00128 ();
00129 <span class="comment"></span>
00130 <span class="comment"> //! Set color table pointer & pointer to bits based on m_pBMI.</span>
00131 <span class="comment"></span> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classPLDIBSection.html#b4">initPointers</a>
00132 ();
00133
00134
00135 <span class="keyword">private</span>:
00136 <span class="comment">// Local functions</span>
00137
00138 <span class="comment">// Member variables.</span>
00139 HBITMAP m_hBitmap;
00140
00141 <span class="keywordtype">bool</span> m_bOwnsBitmap;
00142 };
00143
00144 <span class="comment">// Note that _both_ these copy constructors are needed. If only the </span>
00145 <span class="comment">// second one is there, the compiler generates a default copy </span>
00146 <span class="comment">// constructor anyway :-(.</span>
00147 <span class="keyword">inline</span> <a class="code" href="classPLDIBSection.html#a0">PLDIBSection::PLDIBSection</a>
<a name="l00148"></a><a class="code" href="classPLDIBSection.html#a3">00148</a> ( <span class="keyword">const</span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a> &Orig
00149 )
00150 {
00151 <span class="comment">// Delete everything the base class allocated.</span>
00152 free(m_pBMI);
00153 m_pBMI = NULL;
00154
00155 <span class="keyword">delete</span> [] m_pLineArray;
00156 m_pLineArray = NULL;
00157
00158 internalCopy (Orig);
00159 }
00160
00161 <span class="keyword">inline</span> <a class="code" href="classPLDIBSection.html#a0">PLDIBSection::PLDIBSection</a>
<a name="l00162"></a><a class="code" href="classPLDIBSection.html#a2">00162</a> ( <span class="keyword">const</span> <a class="code" href="classPLBmpBase.html">PLBmpBase</a> &Orig
00163 )
00164 {
00165 <span class="comment">// Delete everything the base class allocated.</span>
00166 free(m_pBMI);
00167 m_pBMI = NULL;
00168
00169 <span class="keyword">delete</span> [] m_pLineArray;
00170 m_pLineArray = NULL;
00171
00172 internalCopy (Orig);
00173 }
00174
00175
00176 <span class="keyword">inline</span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a> & PLDIBSection::operator=
<a name="l00177"></a><a class="code" href="classPLDIBSection.html#a4">00177</a> ( <a class="code" href="classPLBmpBase.html">PLBmpBase</a> <span class="keyword">const</span> &Orig
00178 )
00179 {
00180 <a class="code" href="classPLBmp.html#a2">PLBmp::operator=</a>(Orig);
00181 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
00182 }
00183
00184 <span class="keyword">inline</span> <a class="code" href="classPLDIBSection.html">PLDIBSection</a> & PLDIBSection::operator=
<a name="l00185"></a><a class="code" href="classPLDIBSection.html#a5">00185</a> ( <a class="code" href="classPLDIBSection.html">PLDIBSection</a> <span class="keyword">const</span> &Orig
00186 )
00187 {
00188 <a class="code" href="classPLBmp.html#a2">PLBmp::operator=</a>(Orig);
00189 <span class="keywordflow">return</span> *<span class="keyword">this</span>;
00190 }
00191
00192
00193 <span class="preprocessor">#endif</span>
00194 <span class="preprocessor"></span><span class="comment">/*</span>
00195 <span class="comment">/--------------------------------------------------------------------</span>
00196 <span class="comment">|</span>
00197 <span class="comment">| $Log: pldibsect_8h-source.html,v $
00197 <span class="comment">| Revision 1.2 2004/09/15 15:26:29 uzadow
00197 <span class="comment">| Linux compatibility changes, doc update.
00197 <span class="comment">|</span>
00198 <span class="comment">| Revision 1.5 2004/09/09 16:52:50 artcom</span>
00199 <span class="comment">| refactored PixelFormat</span>
00200 <span class="comment">|</span>
00201 <span class="comment">| Revision 1.4 2004/06/15 14:17:25 uzadow</span>
00202 <span class="comment">| First working version of PLSubBmp.</span>
00203 <span class="comment">|</span>
00204 <span class="comment">| Revision 1.3 2002/08/04 20:08:01 uzadow</span>
00205 <span class="comment">| Added PLBmpInfo class, ability to extract metainformation from images without loading the whole image and proper greyscale support.</span>
00206 <span class="comment">|</span>
00207 <span class="comment">| Revision 1.2 2002/03/31 13:36:42 uzadow</span>
00208 <span class="comment">| Updated copyright.</span>
00209 <span class="comment">|</span>
00210 <span class="comment">| Revision 1.1 2001/09/16 19:03:23 uzadow</span>
00211 <span class="comment">| Added global name prefix PL, changed most filenames.</span>
00212 <span class="comment">|</span>
00213 <span class="comment">| Revision 1.12 2001/01/21 14:28:22 uzadow</span>
00214 <span class="comment">| Changed array cleanup from delete to delete[].</span>
00215 <span class="comment">|</span>
00216 <span class="comment">| Revision 1.11 2000/12/09 12:16:26 uzadow</span>
00217 <span class="comment">| Fixed several memory leaks.</span>
00218 <span class="comment">|</span>
00219 <span class="comment">| Revision 1.10 2000/11/02 21:28:47 uzadow</span>
00220 <span class="comment">| Fixed copy constructors.</span>
00221 <span class="comment">|</span>
00222 <span class="comment">| Revision 1.9 2000/07/19 12:23:15 Ulrich von Zadow</span>
00223 <span class="comment">| Changed HANDLE to HBITMAP.</span>
00224 <span class="comment">|</span>
00225 <span class="comment">| Revision 1.8 2000/07/07 13:20:03 Ulrich von Zadow</span>
00226 <span class="comment">| Comments</span>
00227 <span class="comment">|</span>
00228 <span class="comment">| Revision 1.7 2000/01/17 23:37:12 Ulrich von Zadow</span>
00229 <span class="comment">| Corrected bug in assignment operator.</span>
00230 <span class="comment">|</span>
00231 <span class="comment">| Revision 1.6 2000/01/16 20:43:17 anonymous</span>
00232 <span class="comment">| Removed MFC dependencies</span>
00233 <span class="comment">|</span>
00234 <span class="comment">|</span>
00235 <span class="comment">\--------------------------------------------------------------------</span>
00236 <span class="comment">*/</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Mon Sep 13 16:16:40 2004 for paintlib by
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