File indexing completed on 2024-12-01 04:29:20

0001 /*
0002     SPDX-FileCopyrightText: 2010 Till Theato <root@ttill.de>
0003     SPDX-FileCopyrightText: 2017 Dušan Hanuš <hanus@pixelhouse.cz>
0004     SPDX-License-Identifier: GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
0005 */
0006 
0007 #include "qcolorutils.h"
0008 
0009 #include <QTextStream>
0010 
0011 QColor QColorUtils::stringToColor(QString strColor)
0012 {
0013     bool ok = false;
0014     QColor color("black");
0015     if (strColor.startsWith(QLatin1String("0x"))) {
0016         if (strColor.length() == 10) {
0017             // 0xRRGGBBAA
0018             uint intval = strColor.toUInt(&ok, 16);
0019             color.setRgb((intval >> 24) & 0xff, // r
0020                          (intval >> 16) & 0xff, // g
0021                          (intval >> 8) & 0xff,  // b
0022                          intval & 0xff);        // a
0023         } else {
0024             // 0xRRGGBB, 0xRGB
0025             color.setNamedColor(strColor.replace(0, 2, QLatin1Char('#')));
0026         }
0027     } else {
0028         if (strColor.length() == 9) {
0029             // #AARRGGBB
0030             strColor = strColor.replace('#', QLatin1String("0x"));
0031             uint intval = strColor.toUInt(&ok, 16);
0032             color.setRgb((intval >> 16) & 0xff,  // r
0033                          (intval >> 8) & 0xff,   // g
0034                          intval & 0xff,          // b
0035                          (intval >> 24) & 0xff); // a
0036         } else if (strColor.length() == 8) {
0037             // 0xRRGGBB
0038             strColor = strColor.replace('#', QLatin1String("0x"));
0039             color.setNamedColor(strColor);
0040         } else {
0041             // #RRGGBB, #RGB
0042             color.setNamedColor(strColor);
0043         }
0044     }
0045 
0046     return color;
0047 }
0048 
0049 QString QColorUtils::colorToString(const QColor &color, bool alpha)
0050 {
0051     QString colorStr;
0052     QTextStream stream(&colorStr);
0053     stream << "0x";
0054     stream.setIntegerBase(16);
0055     stream.setFieldWidth(2);
0056     stream.setFieldAlignment(QTextStream::AlignRight);
0057     stream.setPadChar('0');
0058     stream << color.red() << color.green() << color.blue();
0059     if (alpha) {
0060         stream << color.alpha();
0061     } else {
0062         // MLT always wants 0xRRGGBBAA format
0063         stream << "ff";
0064     }
0065     return colorStr;
0066 }
0067 
0068 QColor QColorUtils::complementary(QColor color)
0069 {
0070     color = color.toHsv();
0071     int hue = color.hsvHue() + 180;
0072     if (hue > 359) {
0073         hue -= 360;
0074     }
0075     color.setHsv(hue, color.hsvSaturation(), color.value());
0076     return color;
0077 }
0078 
0079 NegQColor::NegQColor() {}
0080 
0081 NegQColor NegQColor::fromHsvF(qreal h, qreal s, qreal l, qreal a)
0082 {
0083     NegQColor color;
0084     color.qcolor = QColor::fromHsvF(qBound(0., h, 1.), qBound(0., s, 1.), qBound(0., (l < 0 ? -l : l), 1.), a);
0085     color.sign_r = l < 0 ? -1 : 1;
0086     color.sign_g = l < 0 ? -1 : 1;
0087     color.sign_b = l < 0 ? -1 : 1;
0088     return color;
0089 }
0090 
0091 QDebug operator<<(QDebug qd, const NegQColor &c)
0092 {
0093     qd << c.qcolor << "(redF" << c.redF() << "greenF" << c.greenF() << "blueF" << c.blueF() << "valueF" << c.valueF() << "hueF" << c.hueF() << ")";
0094     return qd.maybeSpace();
0095 }
0096 
0097 bool NegQColor::operator==(const NegQColor &other) const
0098 {
0099     return other.redF() == redF() && other.greenF() == greenF() && other.blueF() == blueF() && other.hueF() == hueF();
0100 }
0101 
0102 bool NegQColor::operator!=(const NegQColor &other) const
0103 {
0104     return other.redF() != redF() || other.greenF() != greenF() || other.blueF() != blueF() || other.hueF() != hueF();
0105 }
0106 
0107 NegQColor NegQColor::fromRgbF(qreal r, qreal g, qreal b, qreal a)
0108 {
0109     NegQColor color;
0110     color.qcolor = QColor::fromRgbF(r < 0 ? -r : r, g < 0 ? -g : g, b < 0 ? -b : b, a);
0111     color.sign_r = r < 0 ? -1 : 1;
0112     color.sign_g = g < 0 ? -1 : 1;
0113     color.sign_b = b < 0 ? -1 : 1;
0114     return color;
0115 }
0116 
0117 qreal NegQColor::redF() const
0118 {
0119     return qcolor.redF() * sign_r;
0120 }
0121 
0122 void NegQColor::setRedF(qreal val)
0123 {
0124     sign_r = val < 0 ? -1 : 1;
0125     qcolor.setRedF(val * sign_r);
0126 }
0127 
0128 qreal NegQColor::greenF() const
0129 {
0130     return qcolor.greenF() * sign_g;
0131 }
0132 
0133 void NegQColor::setGreenF(qreal val)
0134 {
0135     sign_g = val < 0 ? -1 : 1;
0136     qcolor.setGreenF(val * sign_g);
0137 }
0138 
0139 qreal NegQColor::blueF() const
0140 {
0141     return qcolor.blueF() * sign_b;
0142 }
0143 
0144 void NegQColor::setBlueF(qreal val)
0145 {
0146     sign_b = val < 0 ? -1 : 1;
0147     qcolor.setBlueF(val * sign_b);
0148 }
0149 
0150 void NegQColor::setValueF(qreal val)
0151 {
0152     qcolor = QColor::fromHsvF(hueF(), saturationF(), qBound(0., (val < 0 ? -val : val), 1.), 1.);
0153     sign_r = val < 0 ? -1 : 1;
0154     sign_g = val < 0 ? -1 : 1;
0155     sign_b = val < 0 ? -1 : 1;
0156 }
0157 
0158 qreal NegQColor::valueF() const
0159 {
0160     return qcolor.valueF() * sign_g;
0161 }
0162 
0163 int NegQColor::hue() const
0164 {
0165     return qcolor.hue();
0166 }
0167 
0168 qreal NegQColor::hueF() const
0169 {
0170     return qcolor.hueF();
0171 }
0172 
0173 qreal NegQColor::saturationF() const
0174 {
0175     return qcolor.saturationF();
0176 }