widgets/colorbutton.cpp

Sat, 08 Apr 2023 15:05:57 +0300

author
Teemu Piippo <teemu.s.piippo@gmail.com>
date
Sat, 08 Apr 2023 15:05:57 +0300
changeset 345
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child 346
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permissions
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delete commented out code

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1 #include <QColorDialog>
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2 #include <QStyleFactory>
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3 #include <QHBoxLayout>
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4 #include "widgets/colorbutton.h"
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5
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6 ColorButton::ColorButton(const QColor& color, QWidget* parent) :
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7 ColorButton{parent}
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8 {
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9 this->setColor(color);
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10 }
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11
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12 ColorButton::ColorButton(QWidget* parent) :
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13 QWidget{parent},
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14 lineEdit{new QLineEdit{this}},
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15 button{new QPushButton{"…", this}}
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16 {
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17 auto*const layout = new QHBoxLayout{};
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18 layout->addWidget(this->lineEdit);
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19 layout->addWidget(this->button);
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20 layout->setStretch(0, 1);
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21 layout->setStretch(1, 0);
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22 this->setLayout(layout);
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23 connect(this->button, &QPushButton::clicked, [&](){
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24 const QColor color = QColorDialog::getColor(this->color(), this->parentWidget());
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25 if (color.isValid()) {
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26 this->setColor(color);
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27 }
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28 });
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29 connect(this->lineEdit, &QLineEdit::textChanged, [&]{
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30 const QColor color = this->color();
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31 QPalette palette{color};
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32 const qreal lightness = color.lightnessF();
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33 const QColor foreground = lightness < 0.4 ? Qt::white : Qt::black;
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34 const auto style = QStyleFactory::create("Fusion");
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35 this->setStyle(style);
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36 this->setStyleSheet(QStringLiteral(
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37 "*{background-color: %1; color: %2;}"
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38 ).arg(color.name()).arg(foreground.name()));
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39 Q_EMIT this->colorChanged(this->color());
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40 });
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41 this->setColor(Qt::black);
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42 }
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43
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44 QColor ColorButton::color() const
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45 {
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46 return QColor{this->lineEdit->text()};
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47 }
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48
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49 void ColorButton::setColor(const QColor& color)
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50 {
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51 if (color.isValid() and this->color() != color) {
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52 this->lineEdit->setText(color.name());
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53 }
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54 }

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