316 lines
10 KiB
C
316 lines
10 KiB
C
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#pragma option push -b -a8 -pc -A- /*P_O_Push*/
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HRESULT WINAPI DXColorFromBSTR( BSTR Color, DWORD *pdwColor );
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typedef struct _COLORVALUE_PAIR
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{
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const CHAR *szName;
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DWORD dwValue;
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} COLORVALUE_PAIR;
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const COLORVALUE_PAIR
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rgColorNames[] =
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{
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{ ("aliceblue"), 0xfff0f8ff },
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{ ("antiquewhite"), 0xfffaebd7 },
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{ ("aqua"), 0xff00ffff },
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{ ("aquamarine"), 0xff7fffd4 },
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{ ("azure"), 0xfff0ffff },
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{ ("beige"), 0xfff5f5dc },
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{ ("bisque"), 0xffffe4c4 },
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{ ("black"), 0xff000000 },
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{ ("blanchedalmond"), 0xffffebcd },
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{ ("blue"), 0xff0000ff },
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{ ("blueviolet"), 0xff8a2be2 },
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{ ("brown"), 0xffa52a2a },
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{ ("burlywood"), 0xffdeb887 },
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{ ("cadetblue"), 0xff5f9ea0 },
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{ ("chartreuse"), 0xff7fff00 },
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{ ("chocolate"), 0xffd2691e },
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{ ("coral"), 0xffff7f50 },
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{ ("cornflowerblue"), 0xff6495ed },
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{ ("cornsilk"), 0xfffff8dc },
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{ ("crimson"), 0xffdc143c },
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{ ("cyan"), 0xff00ffff },
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{ ("darkblue"), 0xff00008b },
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{ ("darkcyan"), 0xff008b8b },
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{ ("darkgoldenrod"), 0xffb8860b },
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{ ("darkgray"), 0xffa9a9a9 },
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{ ("darkgreen"), 0xff006400 },
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{ ("darkkhaki"), 0xffbdb76b },
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{ ("darkmagenta"), 0xff8b008b },
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{ ("darkolivegreen"), 0xff556b2f },
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{ ("darkorange"), 0xffff8c00 },
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{ ("darkorchid"), 0xff9932cc },
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{ ("darkred"), 0xff8b0000 },
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{ ("darksalmon"), 0xffe9967a },
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{ ("darkseagreen"), 0xff8fbc8f },
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{ ("darkslateblue"), 0xff483d8b },
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{ ("darkslategray"), 0xff2f4f4f },
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{ ("darkturquoise"), 0xff00ced1 },
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{ ("darkviolet"), 0xff9400d3 },
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{ ("deeppink"), 0xffff1493 },
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{ ("deepskyblue"), 0xff00bfff },
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{ ("dimgray"), 0xff696969 },
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{ ("dodgerblue"), 0xff1e90ff },
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{ ("firebrick"), 0xffb22222 },
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{ ("floralwhite"), 0xfffffaf0 },
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{ ("forestgreen"), 0xff228b22 },
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{ ("fuchsia"), 0xffff00ff },
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{ ("gainsboro"), 0xffdcdcdc },
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{ ("ghostwhite"), 0xfff8f8ff },
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{ ("gold"), 0xffffd700 },
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{ ("goldenrod"), 0xffdaa520 },
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{ ("gray"), 0xff808080 },
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{ ("green"), 0xff008000 },
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{ ("greenyellow"), 0xffadff2f },
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{ ("honeydew"), 0xfff0fff0 },
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{ ("hotpink"), 0xffff69b4 },
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{ ("indianred"), 0xffcd5c5c },
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{ ("indigo"), 0xff4b0082 },
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{ ("ivory"), 0xfffffff0 },
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{ ("khaki"), 0xfff0e68c },
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{ ("lavender"), 0xffe6e6fa },
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{ ("lavenderblush"), 0xfffff0f5 },
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{ ("lawngreen"), 0xff7cfc00 },
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{ ("lemonchiffon"), 0xfffffacd },
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{ ("lightblue"), 0xffadd8e6 },
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{ ("lightcoral"), 0xfff08080 },
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{ ("lightcyan"), 0xffe0ffff },
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{ ("lightgoldenrodyellow"), 0xfffafad2 },
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{ ("lightgreen"), 0xff90ee90 },
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{ ("lightgrey"), 0xffd3d3d3 },
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{ ("lightpink"), 0xffffb6c1 },
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{ ("lightsalmon"), 0xffffa07a },
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{ ("lightseagreen"), 0xff20b2aa },
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{ ("lightskyblue"), 0xff87cefa },
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{ ("lightslategray"), 0xff778899 },
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{ ("lightsteelblue"), 0xffb0c4de },
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{ ("lightyellow"), 0xffffffe0 },
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{ ("lime"), 0xff00ff00 },
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{ ("limegreen"), 0xff32cd32 },
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{ ("linen"), 0xfffaf0e6 },
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{ ("magenta"), 0xffff00ff },
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{ ("maroon"), 0xff800000 },
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{ ("mediumaquamarine"), 0xff66cdaa },
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{ ("mediumblue"), 0xff0000cd },
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{ ("mediumorchid"), 0xffba55d3 },
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{ ("mediumpurple"), 0xff9370db },
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{ ("mediumseagreen"), 0xff3cb371 },
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{ ("mediumslateblue"), 0xff7b68ee },
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{ ("mediumspringgreen"), 0xff00fa9a },
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{ ("mediumturquoise"), 0xff48d1cc },
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{ ("mediumvioletred"), 0xffc71585 },
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{ ("midnightblue"), 0xff191970 },
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{ ("mintcream"), 0xfff5fffa },
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{ ("mistyrose"), 0xffffe4e1 },
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{ ("moccasin"), 0xffffe4b5 },
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{ ("navajowhite"), 0xffffdead },
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{ ("navy"), 0xff000080 },
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{ ("oldlace"), 0xfffdf5e6 },
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{ ("olive"), 0xff808000 },
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{ ("olivedrab"), 0xff6b8e23 },
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{ ("orange"), 0xffffa500 },
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{ ("orangered"), 0xffff4500 },
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{ ("orchid"), 0xffda70d6 },
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{ ("palegoldenrod"), 0xffeee8aa },
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{ ("palegreen"), 0xff98fb98 },
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{ ("paleturquoise"), 0xffafeeee },
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{ ("palevioletred"), 0xffdb7093 },
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{ ("papayawhip"), 0xffffefd5 },
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{ ("peachpuff"), 0xffffdab9 },
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{ ("peru"), 0xffcd853f },
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{ ("pink"), 0xffffc0cb },
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{ ("plum"), 0xffdda0dd },
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{ ("powderblue"), 0xffb0e0e6 },
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{ ("purple"), 0xff800080 },
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{ ("red"), 0xffff0000 },
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{ ("rosybrown"), 0xffbc8f8f },
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{ ("royalblue"), 0xff4169e1 },
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{ ("saddlebrown"), 0xff8b4513 },
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{ ("salmon"), 0xfffa8072 },
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{ ("sandybrown"), 0xfff4a460 },
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{ ("seagreen"), 0xff2e8b57 },
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{ ("seashell"), 0xfffff5ee },
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{ ("sienna"), 0xffa0522d },
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{ ("silver"), 0xffc0c0c0 },
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{ ("skyblue"), 0xff87ceeb },
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{ ("slateblue"), 0xff6a5acd },
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{ ("slategray"), 0xff708090 },
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{ ("snow"), 0xfffffafa },
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{ ("springgreen"), 0xff00ff7f },
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{ ("steelblue"), 0xff4682b4 },
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{ ("tan"), 0xffd2b48c },
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{ ("teal"), 0xff008080 },
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{ ("thistle"), 0xffd8bfd8 },
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{ ("tomato"), 0xffff6347 },
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{ ("turquoise"), 0xff40e0d0 },
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{ ("violet"), 0xffee82ee },
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{ ("wheat"), 0xfff5deb3 },
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{ ("white"), 0xffffffff },
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{ ("whitesmoke"), 0xfff5f5f5 },
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{ ("yellow"), 0xffffff00 },
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{ ("yellowgreen"), 0xff9acd32 }
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}; // rgColorNames[]
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#define SIZE_OF_COLOR_TABLE (sizeof(rgColorNames) / sizeof(COLORVALUE_PAIR))
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//
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// Used by DXColorFromBSTR to parse the hex string.
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//
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inline HRESULT _HexStrToDWORD( char * pch, DWORD * pdwColor )
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{
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HRESULT hr = S_OK;
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short hexVals[8];
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int numVals;
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int i;
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DWORD dwmult;
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if( !pch || !pdwColor )
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{
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hr = E_FAIL;
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}
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else
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{
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//--- parse input string
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numVals = 0;
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while( *pch && numVals < 8 )
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{
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if( *pch >= '0' && *pch <= '9' )
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{
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hexVals[numVals++] = *pch++ - '0';
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}
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else if( *pch >= 'a' && *pch <= 'f' )
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{
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hexVals[numVals++] = *pch++ - 'a' + 10;
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}
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else if( *pch >= 'A' && *pch <= 'F' )
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{
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hexVals[numVals++] = *pch++ - 'A' + 10;
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}
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else
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{
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break;
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}
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}
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if( numVals < 6 )
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{
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hr = E_FAIL;
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}
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else
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{
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//--- if we were passed 7 hex digits, only use the first 6
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if( numVals == 7 )
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{
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numVals = 6;
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}
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//--- initialize multiplier
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dwmult = 1;
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*pdwColor = 0;
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//--- multiply hexVals by 16^i
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for( i = 0; i < numVals; i++ )
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{
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*pdwColor += (hexVals[numVals-(i+1)]*dwmult);
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dwmult <<= 4;
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}
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}
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}
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return hr;
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}
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//
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// Used by DXColorFromBSTR to convert a string to lower case
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//
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inline void StringToLowerCase( CHAR * pstrKey )
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{
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if( pstrKey )
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{
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while( *pstrKey )
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{
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if( *pstrKey >= 'A' && *pstrKey <= 'Z' )
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{
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*pstrKey = 'a' + *pstrKey - 'A';
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}
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pstrKey++;
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}
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}
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}
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inline HRESULT WINAPI DXColorFromBSTR( BSTR Color, DWORD *pdwColor )
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{
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HRESULT hr = S_OK;
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// validate arguments
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int strLen = wcslen(Color);
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if( strLen < 3 || DXIsBadReadPtr( Color, strLen ) ||
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DXIsBadWritePtr( pdwColor, sizeof(*pdwColor) ) )
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{
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hr = E_INVALIDARG;
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}
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else
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{
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//--- first check for #AARRGGBB and #RRGGBB strings
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if( Color[0] == L'#' )
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{
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CHAR ch[11] = "0xffffffff";
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if( strLen > 9 ) strLen = 9;
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if( strLen >= 7 )
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{
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WideCharToMultiByte( CP_ACP, NULL, &Color[1], strLen-1, &ch[11-strLen], strLen, NULL, NULL );
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hr = _HexStrToDWORD( &ch[2], pdwColor);
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}
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else
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{
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hr = E_FAIL;
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}
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}
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else
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{
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//--- convert the string to lower case
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LPSTR pstrKey = (LPSTR) alloca((strLen + 1) * sizeof(CHAR));
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WideCharToMultiByte( CP_ACP, NULL, Color, strLen+1, pstrKey, strLen+1, NULL, NULL );
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StringToLowerCase( pstrKey );
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//--- search the string table using a binary search
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int nFirst = 0;
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int nLast = SIZE_OF_COLOR_TABLE - 1;
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int nCur, nCmp;
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bool bFound = false;
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while( (nFirst <= nLast) && !bFound )
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{
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nCur = (nFirst + nLast) / 2;
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nCmp = strcmp( rgColorNames[nCur].szName, pstrKey );
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if( nCmp < 0 )
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{
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nFirst = nCur + 1;
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}
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else if( nCmp > 0 )
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{
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nLast = nCur - 1;
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}
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else
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{
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bFound = true;
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*pdwColor = rgColorNames[nCur].dwValue;
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}
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}
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//--- string not in table
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if( !bFound )
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{
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hr = E_FAIL;
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}
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}
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}
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return hr;
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}
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#pragma option pop /*P_O_Pop*/
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