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fdo#74697 Add Bluez 5 support for impress remote.
[LibreOffice.git] / oox / source / drawingml / color.cxx
blob52d5465d46a3575775cbd327258faa9a2a449c49
1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 /*
3 * This file is part of the LibreOffice project.
4 *
5 * This Source Code Form is subject to the terms of the Mozilla Public
6 * License, v. 2.0. If a copy of the MPL was not distributed with this
7 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 *
9 * This file incorporates work covered by the following license notice:
10 *
11 * Licensed to the Apache Software Foundation (ASF) under one or more
12 * contributor license agreements. See the NOTICE file distributed
13 * with this work for additional information regarding copyright
14 * ownership. The ASF licenses this file to you under the Apache
15 * License, Version 2.0 (the "License"); you may not use this file
16 * except in compliance with the License. You may obtain a copy of
17 * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 */
19
20 #include "oox/drawingml/color.hxx"
21 #include <algorithm>
22 #include <math.h>
23 #include "oox/helper/containerhelper.hxx"
24 #include "oox/helper/graphichelper.hxx"
25 #include "oox/drawingml/drawingmltypes.hxx"
26 #include "oox/token/namespaces.hxx"
27 #include "oox/token/tokens.hxx"
28
29 namespace oox {
30 namespace drawingml {
31
32 // ============================================================================
33
34 namespace {
35
36 /** Global storage for predefined color values used in OOXML file formats. */
37 struct PresetColorsPool
38 {
39 typedef ::std::vector< sal_Int32 > ColorVector;
40
41 ColorVector maDmlColors; /// Predefined colors in DrawingML, indexed by XML token.
42 ColorVector maVmlColors; /// Predefined colors in VML, indexed by XML token.
43
44 explicit PresetColorsPool();
45 };
46
47 // ----------------------------------------------------------------------------
48
49 PresetColorsPool::PresetColorsPool() :
50 maDmlColors( static_cast< size_t >( XML_TOKEN_COUNT ), API_RGB_TRANSPARENT ),
51 maVmlColors( static_cast< size_t >( XML_TOKEN_COUNT ), API_RGB_TRANSPARENT )
52 {
53 // predefined colors in DrawingML (map XML token identifiers to RGB values)
54 static const sal_Int32 spnDmlColors[] =
55 {
56 XML_aliceBlue, 0xF0F8FF, XML_antiqueWhite, 0xFAEBD7,
57 XML_aqua, 0x00FFFF, XML_aquamarine, 0x7FFFD4,
58 XML_azure, 0xF0FFFF, XML_beige, 0xF5F5DC,
59 XML_bisque, 0xFFE4C4, XML_black, 0x000000,
60 XML_blanchedAlmond, 0xFFEBCD, XML_blue, 0x0000FF,
61 XML_blueViolet, 0x8A2BE2, XML_brown, 0xA52A2A,
62 XML_burlyWood, 0xDEB887, XML_cadetBlue, 0x5F9EA0,
63 XML_chartreuse, 0x7FFF00, XML_chocolate, 0xD2691E,
64 XML_coral, 0xFF7F50, XML_cornflowerBlue, 0x6495ED,
65 XML_cornsilk, 0xFFF8DC, XML_crimson, 0xDC143C,
66 XML_cyan, 0x00FFFF, XML_deepPink, 0xFF1493,
67 XML_deepSkyBlue, 0x00BFFF, XML_dimGray, 0x696969,
68 XML_dkBlue, 0x00008B, XML_dkCyan, 0x008B8B,
69 XML_dkGoldenrod, 0xB8860B, XML_dkGray, 0xA9A9A9,
70 XML_dkGreen, 0x006400, XML_dkKhaki, 0xBDB76B,
71 XML_dkMagenta, 0x8B008B, XML_dkOliveGreen, 0x556B2F,
72 XML_dkOrange, 0xFF8C00, XML_dkOrchid, 0x9932CC,
73 XML_dkRed, 0x8B0000, XML_dkSalmon, 0xE9967A,
74 XML_dkSeaGreen, 0x8FBC8B, XML_dkSlateBlue, 0x483D8B,
75 XML_dkSlateGray, 0x2F4F4F, XML_dkTurquoise, 0x00CED1,
76 XML_dkViolet, 0x9400D3, XML_dodgerBlue, 0x1E90FF,
77 XML_firebrick, 0xB22222, XML_floralWhite, 0xFFFAF0,
78 XML_forestGreen, 0x228B22, XML_fuchsia, 0xFF00FF,
79 XML_gainsboro, 0xDCDCDC, XML_ghostWhite, 0xF8F8FF,
80 XML_gold, 0xFFD700, XML_goldenrod, 0xDAA520,
81 XML_gray, 0x808080, XML_green, 0x008000,
82 XML_greenYellow, 0xADFF2F, XML_honeydew, 0xF0FFF0,
83 XML_hotPink, 0xFF69B4, XML_indianRed, 0xCD5C5C,
84 XML_indigo, 0x4B0082, XML_ivory, 0xFFFFF0,
85 XML_khaki, 0xF0E68C, XML_lavender, 0xE6E6FA,
86 XML_lavenderBlush, 0xFFF0F5, XML_lawnGreen, 0x7CFC00,
87 XML_lemonChiffon, 0xFFFACD, XML_lime, 0x00FF00,
88 XML_limeGreen, 0x32CD32, XML_linen, 0xFAF0E6,
89 XML_ltBlue, 0xADD8E6, XML_ltCoral, 0xF08080,
90 XML_ltCyan, 0xE0FFFF, XML_ltGoldenrodYellow, 0xFAFA78,
91 XML_ltGray, 0xD3D3D3, XML_ltGreen, 0x90EE90,
92 XML_ltPink, 0xFFB6C1, XML_ltSalmon, 0xFFA07A,
93 XML_ltSeaGreen, 0x20B2AA, XML_ltSkyBlue, 0x87CEFA,
94 XML_ltSlateGray, 0x778899, XML_ltSteelBlue, 0xB0C4DE,
95 XML_ltYellow, 0xFFFFE0, XML_magenta, 0xFF00FF,
96 XML_maroon, 0x800000, XML_medAquamarine, 0x66CDAA,
97 XML_medBlue, 0x0000CD, XML_medOrchid, 0xBA55D3,
98 XML_medPurple, 0x9370DB, XML_medSeaGreen, 0x3CB371,
99 XML_medSlateBlue, 0x7B68EE, XML_medSpringGreen, 0x00FA9A,
100 XML_medTurquoise, 0x48D1CC, XML_medVioletRed, 0xC71585,
101 XML_midnightBlue, 0x191970, XML_mintCream, 0xF5FFFA,
102 XML_mistyRose, 0xFFE4E1, XML_moccasin, 0xFFE4B5,
103 XML_navajoWhite, 0xFFDEAD, XML_navy, 0x000080,
104 XML_oldLace, 0xFDF5E6, XML_olive, 0x808000,
105 XML_oliveDrab, 0x6B8E23, XML_orange, 0xFFA500,
106 XML_orangeRed, 0xFF4500, XML_orchid, 0xDA70D6,
107 XML_paleGoldenrod, 0xEEE8AA, XML_paleGreen, 0x98FB98,
108 XML_paleTurquoise, 0xAFEEEE, XML_paleVioletRed, 0xDB7093,
109 XML_papayaWhip, 0xFFEFD5, XML_peachPuff, 0xFFDAB9,
110 XML_peru, 0xCD853F, XML_pink, 0xFFC0CB,
111 XML_plum, 0xDDA0DD, XML_powderBlue, 0xB0E0E6,
112 XML_purple, 0x800080, XML_red, 0xFF0000,
113 XML_rosyBrown, 0xBC8F8F, XML_royalBlue, 0x4169E1,
114 XML_saddleBrown, 0x8B4513, XML_salmon, 0xFA8072,
115 XML_sandyBrown, 0xF4A460, XML_seaGreen, 0x2E8B57,
116 XML_seaShell, 0xFFF5EE, XML_sienna, 0xA0522D,
117 XML_silver, 0xC0C0C0, XML_skyBlue, 0x87CEEB,
118 XML_slateBlue, 0x6A5ACD, XML_slateGray, 0x708090,
119 XML_snow, 0xFFFAFA, XML_springGreen, 0x00FF7F,
120 XML_steelBlue, 0x4682B4, XML_tan, 0xD2B48C,
121 XML_teal, 0x008080, XML_thistle, 0xD8BFD8,
122 XML_tomato, 0xFF6347, XML_turquoise, 0x40E0D0,
123 XML_violet, 0xEE82EE, XML_wheat, 0xF5DEB3,
124 XML_white, 0xFFFFFF, XML_whiteSmoke, 0xF5F5F5,
125 XML_yellow, 0xFFFF00, XML_yellowGreen, 0x9ACD32
126 };
127 for( const sal_Int32* pnEntry = spnDmlColors; pnEntry < STATIC_ARRAY_END( spnDmlColors ); pnEntry += 2 )
128 maDmlColors[ static_cast< size_t >( pnEntry[ 0 ] ) ] = pnEntry[ 1 ];
129
130 // predefined colors in VML (map XML token identifiers to RGB values)
131 static const sal_Int32 spnVmlColors[] =
132 {
133 XML_aqua, 0x00FFFF, XML_black, 0x000000,
134 XML_blue, 0x0000FF, XML_fuchsia, 0xFF00FF,
135 XML_gray, 0x808080, XML_green, 0x008000,
136 XML_lime, 0x00FF00, XML_maroon, 0x800000,
137 XML_navy, 0x000080, XML_olive, 0x808000,
138 XML_purple, 0x800080, XML_red, 0xFF0000,
139 XML_silver, 0xC0C0C0, XML_teal, 0x008080,
140 XML_white, 0xFFFFFF, XML_yellow, 0xFFFF00
141 };
142 for( const sal_Int32* pnEntry = spnVmlColors; pnEntry < STATIC_ARRAY_END( spnVmlColors ); pnEntry += 2 )
143 maVmlColors[ static_cast< size_t >( pnEntry[ 0 ] ) ] = pnEntry[ 1 ];
144 }
145
146 // ----------------------------------------------------------------------------
147
148 struct StaticPresetColorsPool : public ::rtl::Static< PresetColorsPool, StaticPresetColorsPool > {};
149
150 // ----------------------------------------------------------------------------
151
152 const double DEC_GAMMA = 2.3;
153 const double INC_GAMMA = 1.0 / DEC_GAMMA;
154
155 // ----------------------------------------------------------------------------
156
157 inline void lclRgbToRgbComponents( sal_Int32& ornR, sal_Int32& ornG, sal_Int32& ornB, sal_Int32 nRgb )
158 {
159 ornR = (nRgb >> 16) & 0xFF;
160 ornG = (nRgb >> 8) & 0xFF;
161 ornB = nRgb & 0xFF;
162 }
163
164 inline sal_Int32 lclRgbComponentsToRgb( sal_Int32 nR, sal_Int32 nG, sal_Int32 nB )
165 {
166 return static_cast< sal_Int32 >( (nR << 16) | (nG << 8) | nB );
167 }
168
169 inline sal_Int32 lclRgbCompToCrgbComp( sal_Int32 nRgbComp )
170 {
171 return static_cast< sal_Int32 >( nRgbComp * MAX_PERCENT / 255 );
172 }
173
174 inline sal_Int32 lclCrgbCompToRgbComp( sal_Int32 nCrgbComp )
175 {
176 return static_cast< sal_Int32 >( nCrgbComp * 255 / MAX_PERCENT );
177 }
178
179 inline sal_Int32 lclGamma( sal_Int32 nComp, double fGamma )
180 {
181 return static_cast< sal_Int32 >( pow( static_cast< double >( nComp ) / MAX_PERCENT, fGamma ) * MAX_PERCENT + 0.5 );
182 }
183
184 void lclSetValue( sal_Int32& ornValue, sal_Int32 nNew, sal_Int32 nMax = MAX_PERCENT )
185 {
186 OSL_ENSURE( (0 <= nNew) && (nNew <= nMax), "lclSetValue - invalid value" );
187 if( (0 <= nNew) && (nNew <= nMax) )
188 ornValue = nNew;
189 }
190
191 void lclModValue( sal_Int32& ornValue, sal_Int32 nMod, sal_Int32 nMax = MAX_PERCENT )
192 {
193 OSL_ENSURE( (0 <= nMod), "lclModValue - invalid modificator" );
194 ornValue = getLimitedValue< sal_Int32, double >( static_cast< double >( ornValue ) * nMod / MAX_PERCENT, 0, nMax );
195 }
196
197 void lclOffValue( sal_Int32& ornValue, sal_Int32 nOff, sal_Int32 nMax = MAX_PERCENT )
198 {
199 OSL_ENSURE( (-nMax <= nOff) && (nOff <= nMax), "lclOffValue - invalid offset" );
200 ornValue = getLimitedValue< sal_Int32, sal_Int32 >( ornValue + nOff, 0, nMax );
201 }
202
203 } // namespace
204
205 // ============================================================================
206
207 Color::Color() :
208 meMode( COLOR_UNUSED ),
209 mnC1( 0 ),
210 mnC2( 0 ),
211 mnC3( 0 ),
212 mnAlpha( MAX_PERCENT )
213 {
214 }
215
216 Color::~Color()
217 {
218 }
219
220 sal_Int32 Color::getDmlPresetColor( sal_Int32 nToken, sal_Int32 nDefaultRgb )
221 {
222 /* Do not pass nDefaultRgb to ContainerHelper::getVectorElement(), to be
223 able to catch the existing vector entries without corresponding XML
224 token identifier. */
225 sal_Int32 nRgbValue = ContainerHelper::getVectorElement( StaticPresetColorsPool::get().maDmlColors, nToken, API_RGB_TRANSPARENT );
226 return (nRgbValue >= 0) ? nRgbValue : nDefaultRgb;
227 }
228
229 sal_Int32 Color::getVmlPresetColor( sal_Int32 nToken, sal_Int32 nDefaultRgb )
230 {
231 /* Do not pass nDefaultRgb to ContainerHelper::getVectorElement(), to be
232 able to catch the existing vector entries without corresponding XML
233 token identifier. */
234 sal_Int32 nRgbValue = ContainerHelper::getVectorElement( StaticPresetColorsPool::get().maVmlColors, nToken, API_RGB_TRANSPARENT );
235 return (nRgbValue >= 0) ? nRgbValue : nDefaultRgb;
236 }
237
238 void Color::setUnused()
239 {
240 meMode = COLOR_UNUSED;
241 }
242
243 void Color::setSrgbClr( sal_Int32 nRgb )
244 {
245 OSL_ENSURE( (0 <= nRgb) && (nRgb <= 0xFFFFFF), "Color::setSrgbClr - invalid RGB value" );
246 meMode = COLOR_RGB;
247 lclRgbToRgbComponents( mnC1, mnC2, mnC3, nRgb );
248 }
249
250 void Color::setScrgbClr( sal_Int32 nR, sal_Int32 nG, sal_Int32 nB )
251 {
252 OSL_ENSURE( (0 <= nR) && (nR <= MAX_PERCENT), "Color::setScrgbClr - invalid red value" );
253 OSL_ENSURE( (0 <= nG) && (nG <= MAX_PERCENT), "Color::setScrgbClr - invalid green value" );
254 OSL_ENSURE( (0 <= nB) && (nB <= MAX_PERCENT), "Color::setScrgbClr - invalid blue value" );
255 meMode = COLOR_CRGB;
256 mnC1 = getLimitedValue< sal_Int32, sal_Int32 >( nR, 0, MAX_PERCENT );
257 mnC2 = getLimitedValue< sal_Int32, sal_Int32 >( nG, 0, MAX_PERCENT );
258 mnC3 = getLimitedValue< sal_Int32, sal_Int32 >( nB, 0, MAX_PERCENT );
259 }
260
261 void Color::setHslClr( sal_Int32 nHue, sal_Int32 nSat, sal_Int32 nLum )
262 {
263 OSL_ENSURE( (0 <= nHue) && (nHue <= MAX_DEGREE), "Color::setHslClr - invalid hue value" );
264 OSL_ENSURE( (0 <= nSat) && (nSat <= MAX_PERCENT), "Color::setHslClr - invalid saturation value" );
265 OSL_ENSURE( (0 <= nLum) && (nLum <= MAX_PERCENT), "Color::setHslClr - invalid luminance value" );
266 meMode = COLOR_HSL;
267 mnC1 = getLimitedValue< sal_Int32, sal_Int32 >( nHue, 0, MAX_DEGREE );
268 mnC2 = getLimitedValue< sal_Int32, sal_Int32 >( nSat, 0, MAX_PERCENT );
269 mnC3 = getLimitedValue< sal_Int32, sal_Int32 >( nLum, 0, MAX_PERCENT );
270 }
271
272 void Color::setPrstClr( sal_Int32 nToken )
273 {
274 sal_Int32 nRgbValue = getDmlPresetColor( nToken, API_RGB_TRANSPARENT );
275 OSL_ENSURE( nRgbValue >= 0, "Color::setPrstClr - invalid preset color token" );
276 if( nRgbValue >= 0 )
277 setSrgbClr( nRgbValue );
278 }
279
280 void Color::setSchemeClr( sal_Int32 nToken )
281 {
282 OSL_ENSURE( nToken != XML_TOKEN_INVALID, "Color::setSchemeClr - invalid color token" );
283 meMode = (nToken == XML_phClr) ? COLOR_PH : COLOR_SCHEME;
284 mnC1 = nToken;
285 }
286
287 void Color::setPaletteClr( sal_Int32 nPaletteIdx )
288 {
289 OSL_ENSURE( nPaletteIdx >= 0, "Color::setPaletteClr - invalid palette index" );
290 meMode = COLOR_PALETTE;
291 mnC1 = nPaletteIdx;
292 }
293
294 void Color::setSysClr( sal_Int32 nToken, sal_Int32 nLastRgb )
295 {
296 OSL_ENSURE( (-1 <= nLastRgb) && (nLastRgb <= 0xFFFFFF), "Color::setSysClr - invalid RGB value" );
297 meMode = COLOR_SYSTEM;
298 mnC1 = nToken;
299 mnC2 = nLastRgb;
300 }
301
302 void Color::addTransformation( sal_Int32 nElement, sal_Int32 nValue )
303 {
304 /* Execute alpha transformations directly, store other transformations in
305 a vector, they may depend on a scheme base color which will be resolved
306 in Color::getColor(). */
307 sal_Int32 nToken = getBaseToken( nElement );
308 switch( nToken )
309 {
310 case XML_alpha: lclSetValue( mnAlpha, nValue ); break;
311 case XML_alphaMod: lclModValue( mnAlpha, nValue ); break;
312 case XML_alphaOff: lclOffValue( mnAlpha, nValue ); break;
313 default: maTransforms.push_back( Transformation( nToken, nValue ) );
314 }
315 }
316
317 void Color::addChartTintTransformation( double fTint )
318 {
319 sal_Int32 nValue = getLimitedValue< sal_Int32, double >( fTint * MAX_PERCENT + 0.5, -MAX_PERCENT, MAX_PERCENT );
320 if( nValue < 0 )
321 maTransforms.push_back( Transformation( XML_shade, nValue + MAX_PERCENT ) );
322 else if( nValue > 0 )
323 maTransforms.push_back( Transformation( XML_tint, MAX_PERCENT - nValue ) );
324 }
325
326 void Color::addExcelTintTransformation( double fTint )
327 {
328 sal_Int32 nValue = getLimitedValue< sal_Int32, double >( fTint * MAX_PERCENT + 0.5, -MAX_PERCENT, MAX_PERCENT );
329 maTransforms.push_back( Transformation( XLS_TOKEN( tint ), nValue ) );
330 }
331
332 void Color::clearTransformations()
333 {
334 maTransforms.clear();
335 clearTransparence();
336 }
337
338 void Color::clearTransparence()
339 {
340 mnAlpha = MAX_PERCENT;
341 }
342
343 sal_Int32 Color::getColor( const GraphicHelper& rGraphicHelper, sal_Int32 nPhClr ) const
344 {
345 /* Special handling for theme style list placeholder colors (state
346 COLOR_PH), Color::getColor() may be called with different placeholder
347 colors in the nPhClr parameter. Therefore, the resolved color will not
348 be stored in this object, thus the state COLOR_FINAL will not be
349 reached and the transformation container will not be cleared, but the
350 original COLOR_PH state will be restored instead. */
351 bool bIsPh = false;
352
353 switch( meMode )
354 {
355 case COLOR_UNUSED: mnC1 = API_RGB_TRANSPARENT; break;
356
357 case COLOR_RGB: break; // nothing to do
358 case COLOR_CRGB: break; // nothing to do
359 case COLOR_HSL: break; // nothing to do
360
361 case COLOR_SCHEME: setResolvedRgb( rGraphicHelper.getSchemeColor( mnC1 ) ); break;
362 case COLOR_PALETTE: setResolvedRgb( rGraphicHelper.getPaletteColor( mnC1 ) ); break;
363 case COLOR_SYSTEM: setResolvedRgb( rGraphicHelper.getSystemColor( mnC1, mnC2 ) ); break;
364 case COLOR_PH: setResolvedRgb( nPhClr ); bIsPh = true; break;
365
366 case COLOR_FINAL: return mnC1;
367 }
368
369 // if color is UNUSED or turns to UNUSED in setResolvedRgb, do not perform transformations
370 if( meMode != COLOR_UNUSED )
371 {
372 for( TransformVec::const_iterator aIt = maTransforms.begin(), aEnd = maTransforms.end(); aIt != aEnd; ++aIt )
373 {
374 OSL_ASSERT((aIt->mnToken & sal_Int32(0xFFFF0000))==0);
375 switch( aIt->mnToken )
376 {
377 case XML_red: toCrgb(); lclSetValue( mnC1, aIt->mnValue ); break;
378 case XML_redMod: toCrgb(); lclModValue( mnC1, aIt->mnValue ); break;
379 case XML_redOff: toCrgb(); lclOffValue( mnC1, aIt->mnValue ); break;
380 case XML_green: toCrgb(); lclSetValue( mnC2, aIt->mnValue ); break;
381 case XML_greenMod: toCrgb(); lclModValue( mnC2, aIt->mnValue ); break;
382 case XML_greenOff: toCrgb(); lclOffValue( mnC2, aIt->mnValue ); break;
383 case XML_blue: toCrgb(); lclSetValue( mnC3, aIt->mnValue ); break;
384 case XML_blueMod: toCrgb(); lclModValue( mnC3, aIt->mnValue ); break;
385 case XML_blueOff: toCrgb(); lclOffValue( mnC3, aIt->mnValue ); break;
386
387 case XML_hue: toHsl(); lclSetValue( mnC1, aIt->mnValue, MAX_DEGREE ); break;
388 case XML_hueMod: toHsl(); lclModValue( mnC1, aIt->mnValue, MAX_DEGREE ); break;
389 case XML_hueOff: toHsl(); lclOffValue( mnC1, aIt->mnValue, MAX_DEGREE ); break;
390 case XML_sat: toHsl(); lclSetValue( mnC2, aIt->mnValue ); break;
391 case XML_satMod: toHsl(); lclModValue( mnC2, aIt->mnValue ); break;
392 case XML_satOff: toHsl(); lclOffValue( mnC2, aIt->mnValue ); break;
393
394 case XML_lum:
395 toHsl();
396 lclSetValue( mnC3, aIt->mnValue );
397 // if color changes to black or white, it will stay gray if luminance changes again
398 if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) mnC2 = 0;
399 break;
400 case XML_lumMod:
401 toHsl();
402 lclModValue( mnC3, aIt->mnValue );
403 // if color changes to black or white, it will stay gray if luminance changes again
404 if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) mnC2 = 0;
405 break;
406 case XML_lumOff:
407 toHsl();
408 lclOffValue( mnC3, aIt->mnValue );
409 // if color changes to black or white, it will stay gray if luminance changes again
410 if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) mnC2 = 0;
411 break;
412
413 case XML_shade:
414 // shade: 0% = black, 100% = original color
415 toCrgb();
416 OSL_ENSURE( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT), "Color::getColor - invalid shade value" );
417 if( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT) )
418 {
419 double fFactor = static_cast< double >( aIt->mnValue ) / MAX_PERCENT;
420 mnC1 = static_cast< sal_Int32 >( mnC1 * fFactor );
421 mnC2 = static_cast< sal_Int32 >( mnC2 * fFactor );
422 mnC3 = static_cast< sal_Int32 >( mnC3 * fFactor );
423 }
424 break;
425 case XML_tint:
426 // tint: 0% = white, 100% = original color
427 toCrgb();
428 OSL_ENSURE( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT), "Color::getColor - invalid tint value" );
429 if( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT) )
430 {
431 double fFactor = static_cast< double >( aIt->mnValue ) / MAX_PERCENT;
432 mnC1 = static_cast< sal_Int32 >( MAX_PERCENT - (MAX_PERCENT - mnC1) * fFactor );
433 mnC2 = static_cast< sal_Int32 >( MAX_PERCENT - (MAX_PERCENT - mnC2) * fFactor );
434 mnC3 = static_cast< sal_Int32 >( MAX_PERCENT - (MAX_PERCENT - mnC3) * fFactor );
435 }
436 break;
437 case XLS_TOKEN( tint ):
438 // Excel tint: move luminance relative to current value
439 toHsl();
440 OSL_ENSURE( (-MAX_PERCENT <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT), "Color::getColor - invalid tint value" );
441 if( (-MAX_PERCENT <= aIt->mnValue) && (aIt->mnValue < 0) )
442 {
443 // negative: luminance towards 0% (black)
444 lclModValue( mnC3, aIt->mnValue + MAX_PERCENT );
445 }
446 else if( (0 < aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT) )
447 {
448 // positive: luminance towards 100% (white)
449 mnC3 = MAX_PERCENT - mnC3;
450 lclModValue( mnC3, MAX_PERCENT - aIt->mnValue );
451 mnC3 = MAX_PERCENT - mnC3;
452 }
453 break;
454
455 case XML_gray:
456 // change color to gray, weighted RGB: 22% red, 72% green, 6% blue
457 toRgb();
458 mnC1 = mnC2 = mnC3 = (mnC1 * 22 + mnC2 * 72 + mnC3 * 6) / 100;
459 break;
460
461 case XML_comp:
462 // comp: rotate hue by 180 degrees, do not change lum/sat
463 toHsl();
464 (mnC1 += 180 * PER_DEGREE) %= MAX_DEGREE;
465 break;
466 case XML_inv:
467 // invert percentual RGB values
468 toCrgb();
469 mnC1 = MAX_PERCENT - mnC1;
470 mnC2 = MAX_PERCENT - mnC2;
471 mnC3 = MAX_PERCENT - mnC3;
472 break;
473
474 case XML_gamma:
475 // increase gamma of color
476 toCrgb();
477 mnC1 = lclGamma( mnC1, INC_GAMMA );
478 mnC2 = lclGamma( mnC2, INC_GAMMA );
479 mnC3 = lclGamma( mnC3, INC_GAMMA );
480 break;
481 case XML_invGamma:
482 // decrease gamma of color
483 toCrgb();
484 mnC1 = lclGamma( mnC1, DEC_GAMMA );
485 mnC2 = lclGamma( mnC2, DEC_GAMMA );
486 mnC3 = lclGamma( mnC3, DEC_GAMMA );
487 break;
488 }
489 }
490
491 // store resulting RGB value in mnC1
492 toRgb();
493 mnC1 = lclRgbComponentsToRgb( mnC1, mnC2, mnC3 );
494 }
495 else // if( meMode != COLOR_UNUSED )
496 {
497 mnC1 = API_RGB_TRANSPARENT;
498 }
499
500 meMode = bIsPh ? COLOR_PH : COLOR_FINAL;
501 if( meMode == COLOR_FINAL )
502 maTransforms.clear();
503 return mnC1;
504 }
505
506 bool Color::hasTransparency() const
507 {
508 return mnAlpha < MAX_PERCENT;
509 }
510
511 sal_Int16 Color::getTransparency() const
512 {
513 return static_cast< sal_Int16 >( (MAX_PERCENT - mnAlpha) / PER_PERCENT );
514 }
515
516 // private --------------------------------------------------------------------
517
518 void Color::setResolvedRgb( sal_Int32 nRgb ) const
519 {
520 meMode = (nRgb < 0) ? COLOR_UNUSED : COLOR_RGB;
521 lclRgbToRgbComponents( mnC1, mnC2, mnC3, nRgb );
522 }
523
524 void Color::toRgb() const
525 {
526 switch( meMode )
527 {
528 case COLOR_RGB:
529 // nothing to do
530 break;
531 case COLOR_CRGB:
532 meMode = COLOR_RGB;
533 mnC1 = lclCrgbCompToRgbComp( lclGamma( mnC1, INC_GAMMA ) );
534 mnC2 = lclCrgbCompToRgbComp( lclGamma( mnC2, INC_GAMMA ) );
535 mnC3 = lclCrgbCompToRgbComp( lclGamma( mnC3, INC_GAMMA ) );
536 break;
537 case COLOR_HSL:
538 {
539 meMode = COLOR_RGB;
540 double fR = 0.0, fG = 0.0, fB = 0.0;
541 if( (mnC2 == 0) || (mnC3 == MAX_PERCENT) )
542 {
543 fR = fG = fB = static_cast< double >( mnC3 ) / MAX_PERCENT;
544 }
545 else if( mnC3 > 0 )
546 {
547 // base color from hue
548 double fHue = static_cast< double >( mnC1 ) / MAX_DEGREE * 6.0; // interval [0.0, 6.0)
549 if( fHue <= 1.0 ) { fR = 1.0; fG = fHue; } // red...yellow
550 else if( fHue <= 2.0 ) { fR = 2.0 - fHue; fG = 1.0; } // yellow...green
551 else if( fHue <= 3.0 ) { fG = 1.0; fB = fHue - 2.0; } // green...cyan
552 else if( fHue <= 4.0 ) { fG = 4.0 - fHue; fB = 1.0; } // cyan...blue
553 else if( fHue <= 5.0 ) { fR = fHue - 4.0; fB = 1.0; } // blue...magenta
554 else { fR = 1.0; fB = 6.0 - fHue; } // magenta...red
555
556 // apply saturation
557 double fSat = static_cast< double >( mnC2 ) / MAX_PERCENT;
558 fR = (fR - 0.5) * fSat + 0.5;
559 fG = (fG - 0.5) * fSat + 0.5;
560 fB = (fB - 0.5) * fSat + 0.5;
561
562 // apply luminance
563 double fLum = 2.0 * static_cast< double >( mnC3 ) / MAX_PERCENT - 1.0; // interval [-1.0, 1.0]
564 if( fLum < 0.0 )
565 {
566 double fShade = fLum + 1.0; // interval [0.0, 1.0] (black...full color)
567 fR *= fShade;
568 fG *= fShade;
569 fB *= fShade;
570 }
571 else if( fLum > 0.0 )
572 {
573 double fTint = 1.0 - fLum; // interval [0.0, 1.0] (white...full color)
574 fR = 1.0 - ((1.0 - fR) * fTint);
575 fG = 1.0 - ((1.0 - fG) * fTint);
576 fB = 1.0 - ((1.0 - fB) * fTint);
577 }
578 }
579 mnC1 = static_cast< sal_Int32 >( fR * 255.0 + 0.5 );
580 mnC2 = static_cast< sal_Int32 >( fG * 255.0 + 0.5 );
581 mnC3 = static_cast< sal_Int32 >( fB * 255.0 + 0.5 );
582 }
583 break;
584 default:
585 OSL_FAIL( "Color::toRgb - unexpected color mode" );
586 }
587 }
588
589 void Color::toCrgb() const
590 {
591 switch( meMode )
592 {
593 case COLOR_HSL:
594 toRgb();
595 // run through!
596 case COLOR_RGB:
597 meMode = COLOR_CRGB;
598 mnC1 = lclGamma( lclRgbCompToCrgbComp( mnC1 ), DEC_GAMMA );
599 mnC2 = lclGamma( lclRgbCompToCrgbComp( mnC2 ), DEC_GAMMA );
600 mnC3 = lclGamma( lclRgbCompToCrgbComp( mnC3 ), DEC_GAMMA );
601 break;
602 case COLOR_CRGB:
603 // nothing to do
604 break;
605 default:
606 OSL_FAIL( "Color::toCrgb - unexpected color mode" );
607 }
608 }
609
610 void Color::toHsl() const
611 {
612 switch( meMode )
613 {
614 case COLOR_CRGB:
615 toRgb();
616 // run through!
617 case COLOR_RGB:
618 {
619 meMode = COLOR_HSL;
620 double fR = static_cast< double >( mnC1 ) / 255.0; // red [0.0, 1.0]
621 double fG = static_cast< double >( mnC2 ) / 255.0; // green [0.0, 1.0]
622 double fB = static_cast< double >( mnC3 ) / 255.0; // blue [0.0, 1.0]
623 double fMin = ::std::min( ::std::min( fR, fG ), fB );
624 double fMax = ::std::max( ::std::max( fR, fG ), fB );
625 double fD = fMax - fMin;
626
627 using ::rtl::math::approxEqual;
628
629 // hue: 0deg = red, 120deg = green, 240deg = blue
630 if( fD == 0.0 ) // black/gray/white
631 mnC1 = 0;
632 else if( approxEqual(fMax, fR, 64) ) // magenta...red...yellow
633 mnC1 = static_cast< sal_Int32 >( ((fG - fB) / fD * 60.0 + 360.0) * PER_DEGREE + 0.5 ) % MAX_DEGREE;
634 else if( approxEqual(fMax, fG, 64) ) // yellow...green...cyan
635 mnC1 = static_cast< sal_Int32 >( ((fB - fR) / fD * 60.0 + 120.0) * PER_DEGREE + 0.5 );
636 else // cyan...blue...magenta
637 mnC1 = static_cast< sal_Int32 >( ((fR - fG) / fD * 60.0 + 240.0) * PER_DEGREE + 0.5 );
638
639 // luminance: 0% = black, 50% = full color, 100% = white
640 mnC3 = static_cast< sal_Int32 >( (fMin + fMax) / 2.0 * MAX_PERCENT + 0.5 );
641
642 // saturation: 0% = gray, 100% = full color
643 if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) // black/white
644 mnC2 = 0;
645 else if( mnC3 <= 50 * PER_PERCENT ) // dark...full color
646 mnC2 = static_cast< sal_Int32 >( fD / (fMin + fMax) * MAX_PERCENT + 0.5 );
647 else // full color...light
648 mnC2 = static_cast< sal_Int32 >( fD / (2.0 - fMax - fMin) * MAX_PERCENT + 0.5 );
649 }
650 break;
651 case COLOR_HSL:
652 // nothing to do
653 break;
654 default:
655 OSL_FAIL( "Color::toHsl - unexpected color mode" );
656 }
657 }
658
659 // ============================================================================
660
661 } // namespace drawingml
662 } // namespace oox
663
664 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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