diff options
Diffstat (limited to 'basegfx/source/color/bcolormodifier.cxx')
| -rw-r--r-- | basegfx/source/color/bcolormodifier.cxx | 334 |
1 files changed, 301 insertions, 33 deletions
diff --git a/basegfx/source/color/bcolormodifier.cxx b/basegfx/source/color/bcolormodifier.cxx index a53715b62304..c1f70267769c 100644 --- a/basegfx/source/color/bcolormodifier.cxx +++ b/basegfx/source/color/bcolormodifier.cxx @@ -23,47 +23,315 @@ namespace basegfx { - ::basegfx::BColor BColorModifier::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + BColorModifier::~BColorModifier() { - switch(meMode) + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_gray::~BColorModifier_gray() + { + } + + bool BColorModifier_gray::operator==(const BColorModifier& rCompare) const + { + return 0 != dynamic_cast< const BColorModifier_gray* >(&rCompare); + } + + ::basegfx::BColor BColorModifier_gray::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + const double fLuminance(aSourceColor.luminance()); + + return ::basegfx::BColor(fLuminance, fLuminance, fLuminance); + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_invert::~BColorModifier_invert() + { + } + + bool BColorModifier_invert::operator==(const BColorModifier& rCompare) const + { + return 0 != dynamic_cast< const BColorModifier_invert* >(&rCompare); + } + + ::basegfx::BColor BColorModifier_invert::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + return ::basegfx::BColor(1.0 - aSourceColor.getRed(), 1.0 - aSourceColor.getGreen(), 1.0 - aSourceColor.getBlue()); + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_luminance_to_alpha::~BColorModifier_luminance_to_alpha() + { + } + + bool BColorModifier_luminance_to_alpha::operator==(const BColorModifier& rCompare) const + { + return 0 != dynamic_cast< const BColorModifier_luminance_to_alpha* >(&rCompare); + } + + ::basegfx::BColor BColorModifier_luminance_to_alpha::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + const double fAlpha(1.0 - ((aSourceColor.getRed() * 0.2125) + (aSourceColor.getGreen() * 0.7154) + (aSourceColor.getBlue() * 0.0721))); + + return ::basegfx::BColor(fAlpha, fAlpha, fAlpha); + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_replace::~BColorModifier_replace() + { + } + + bool BColorModifier_replace::operator==(const BColorModifier& rCompare) const + { + const BColorModifier_replace* pCompare = dynamic_cast< const BColorModifier_replace* >(&rCompare); + + if(!pCompare) { - case BCOLORMODIFYMODE_INTERPOLATE : - { - return interpolate(maBColor, aSourceColor, mfValue); - } - case BCOLORMODIFYMODE_GRAY : - { - const double fLuminance(aSourceColor.luminance()); - return ::basegfx::BColor(fLuminance, fLuminance, fLuminance); - } - case BCOLORMODIFYMODE_BLACKANDWHITE : - { - const double fLuminance(aSourceColor.luminance()); - - if(fLuminance < mfValue) - { - return ::basegfx::BColor::getEmptyBColor(); - } - else - { - return ::basegfx::BColor(1.0, 1.0, 1.0); - } - } - case BCOLORMODIFYMODE_INVERT : - { - return ::basegfx::BColor(1.0 - aSourceColor.getRed(), 1.0 - aSourceColor.getGreen(), 1.0 - aSourceColor.getBlue()); - } - case BCOLORMODIFYMODE_LUMINANCE_TO_ALPHA: + return false; + } + + return getBColor() == pCompare->getBColor(); + } + + ::basegfx::BColor BColorModifier_replace::getModifiedColor(const ::basegfx::BColor& /*aSourceColor*/) const + { + return maBColor; + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_interpolate::~BColorModifier_interpolate() + { + } + + bool BColorModifier_interpolate::operator==(const BColorModifier& rCompare) const + { + const BColorModifier_interpolate* pCompare = dynamic_cast< const BColorModifier_interpolate* >(&rCompare); + + if(!pCompare) + { + return false; + } + + return getBColor() == pCompare->getBColor() && getValue() == pCompare->getValue(); + } + + ::basegfx::BColor BColorModifier_interpolate::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + return interpolate(maBColor, aSourceColor, mfValue); + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_black_and_white::~BColorModifier_black_and_white() + { + } + + bool BColorModifier_black_and_white::operator==(const BColorModifier& rCompare) const + { + const BColorModifier_black_and_white* pCompare = dynamic_cast< const BColorModifier_black_and_white* >(&rCompare); + + if(!pCompare) + { + return false; + } + + return getValue() == pCompare->getValue(); + } + + ::basegfx::BColor BColorModifier_black_and_white::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + const double fLuminance(aSourceColor.luminance()); + + if(fLuminance < mfValue) + { + return ::basegfx::BColor::getEmptyBColor(); + } + else + { + return ::basegfx::BColor(1.0, 1.0, 1.0); + } + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_gamma::BColorModifier_gamma(double fValue) + : BColorModifier(), + mfValue(fValue), + mfInvValue(fValue), + mbUseIt(!basegfx::fTools::equal(fValue, 1.0) && basegfx::fTools::more(fValue, 0.0) && basegfx::fTools::lessOrEqual(fValue, 10.0)) + { + if(mbUseIt) + { + mfInvValue = 1.0 / mfValue; + } + } + + BColorModifier_gamma::~BColorModifier_gamma() + { + } + + bool BColorModifier_gamma::operator==(const BColorModifier& rCompare) const + { + const BColorModifier_gamma* pCompare = dynamic_cast< const BColorModifier_gamma* >(&rCompare); + + if(!pCompare) + { + return false; + } + + // getValue is sufficient, mfInvValue and mbUseIt are only helper values + return getValue() == pCompare->getValue(); + } + + ::basegfx::BColor BColorModifier_gamma::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + if(mbUseIt) + { + ::basegfx::BColor aRetval( + pow(aSourceColor.getRed(), mfInvValue), + pow(aSourceColor.getGreen(), mfInvValue), + pow(aSourceColor.getBlue(), mfInvValue)); + + aRetval.clamp(); + return aRetval; + } + else + { + return aSourceColor; + } + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + BColorModifier_RGBLuminanceContrast::BColorModifier_RGBLuminanceContrast(double fRed, double fGreen, double fBlue, double fLuminance, double fContrast) + : BColorModifier(), + mfRed(basegfx::clamp(fRed, -1.0, 1.0)), + mfGreen(basegfx::clamp(fGreen, -1.0, 1.0)), + mfBlue(basegfx::clamp(fBlue, -1.0, 1.0)), + mfLuminance(basegfx::clamp(fLuminance, -1.0, 1.0)), + mfContrast(basegfx::clamp(fContrast, -1.0, 1.0)), + mfContrastOff(1.0), + mfRedOff(0.0), + mfGreenOff(0.0), + mfBlueOff(0.0), + mbUseIt(false) + { + if(!basegfx::fTools::equalZero(mfRed) + || !basegfx::fTools::equalZero(mfGreen) + || !basegfx::fTools::equalZero(mfBlue) + || !basegfx::fTools::equalZero(mfLuminance) + || !basegfx::fTools::equalZero(mfContrast)) + { + // calculate slope + if(mfContrast >= 0.0) { - const double fAlpha(1.0 - ((aSourceColor.getRed() * 0.2125) + (aSourceColor.getGreen() * 0.7154) + (aSourceColor.getBlue() * 0.0721))); - return ::basegfx::BColor(fAlpha, fAlpha, fAlpha); + mfContrastOff = 128.0 / (128.0 - (mfContrast * 127.0)); } - default : // BCOLORMODIFYMODE_REPLACE + else { - return maBColor; + mfContrastOff = ( 128.0 + (mfContrast * 127.0)) / 128.0; } + + // calculate unified contrast offset + const double fPreparedContrastOff((128.0 - mfContrastOff * 128.0) / 255.0); + const double fCombinedOffset(mfLuminance + fPreparedContrastOff); + + // set full offsets + mfRedOff = mfRed + fCombinedOffset; + mfGreenOff = mfGreen + fCombinedOffset; + mfBlueOff = mfBlue + fCombinedOffset; + + mbUseIt = true; } } + + BColorModifier_RGBLuminanceContrast::~BColorModifier_RGBLuminanceContrast() + { + } + + bool BColorModifier_RGBLuminanceContrast::operator==(const BColorModifier& rCompare) const + { + const BColorModifier_RGBLuminanceContrast* pCompare = dynamic_cast< const BColorModifier_RGBLuminanceContrast* >(&rCompare); + + if(!pCompare) + { + return false; + } + + // no need to compare other values, these are just helpers + return getRed() == pCompare->getRed() + && getGreen() == pCompare->getGreen() + && getBlue() == pCompare->getBlue() + && getLuminance() == pCompare->getLuminance() + && getContrast() == pCompare->getContrast(); + } + + ::basegfx::BColor BColorModifier_RGBLuminanceContrast::getModifiedColor(const ::basegfx::BColor& aSourceColor) const + { + if(mbUseIt) + { + return basegfx::BColor( + basegfx::clamp(aSourceColor.getRed() * mfContrastOff + mfRedOff, 0.0, 1.0), + basegfx::clamp(aSourceColor.getGreen() * mfContrastOff + mfGreenOff, 0.0, 1.0), + basegfx::clamp(aSourceColor.getBlue() * mfContrastOff + mfBlueOff, 0.0, 1.0)); + } + else + { + return aSourceColor; + } + } +} // end of namespace basegfx + +////////////////////////////////////////////////////////////////////////////// + +namespace basegfx +{ + ::basegfx::BColor BColorModifierStack::getModifiedColor(const ::basegfx::BColor& rSource) const + { + if(maBColorModifiers.empty()) + { + return rSource; + } + + ::basegfx::BColor aRetval(rSource); + + for(sal_uInt32 a(maBColorModifiers.size()); a;) + { + a--; + aRetval = maBColorModifiers[a]->getModifiedColor(aRetval); + } + + return aRetval; + } } // end of namespace basegfx /* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |