2016-04-04 14:49:40 +02:00
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#include "./colorbutton.h"
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2017-05-01 03:16:25 +02:00
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#include <QApplication>
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2016-04-04 14:49:40 +02:00
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#include <QColorDialog>
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#include <QDrag>
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2017-05-01 03:16:25 +02:00
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#include <QDragEnterEvent>
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#include <QMimeData>
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#include <QPainter>
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2016-04-04 14:49:40 +02:00
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2019-06-10 21:57:46 +02:00
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namespace QtUtilities {
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2016-04-04 14:49:40 +02:00
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2016-07-16 23:12:02 +02:00
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/*!
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* \cond
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*/
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2017-05-01 03:16:25 +02:00
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class ColorButtonPrivate {
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2016-04-04 14:49:40 +02:00
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ColorButton *q_ptr;
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Q_DECLARE_PUBLIC(ColorButton)
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public:
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QColor m_color;
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#ifndef QT_NO_DRAGANDDROP
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QColor m_dragColor;
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QPoint m_dragStart;
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bool m_dragging;
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#endif
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bool m_backgroundCheckered;
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void slotEditColor();
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QColor shownColor() const;
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QPixmap generatePixmap() const;
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};
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void ColorButtonPrivate::slotEditColor()
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{
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const QColor newColor = QColorDialog::getColor(m_color, q_ptr, QString(), QColorDialog::ShowAlphaChannel);
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if (!newColor.isValid() || newColor == q_ptr->color())
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return;
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q_ptr->setColor(newColor);
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}
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QColor ColorButtonPrivate::shownColor() const
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{
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#ifndef QT_NO_DRAGANDDROP
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if (m_dragging)
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return m_dragColor;
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#endif
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return m_color;
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}
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QPixmap ColorButtonPrivate::generatePixmap() const
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{
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QPixmap pix(24, 24);
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int pixSize = 20;
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QBrush br(shownColor());
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QPixmap pm(2 * pixSize, 2 * pixSize);
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QPainter pmp(&pm);
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pmp.fillRect(0, 0, pixSize, pixSize, Qt::lightGray);
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pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::lightGray);
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pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::darkGray);
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pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::darkGray);
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pmp.fillRect(0, 0, 2 * pixSize, 2 * pixSize, shownColor());
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br = QBrush(pm);
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QPainter p(&pix);
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int corr = 1;
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QRect r = pix.rect().adjusted(corr, corr, -corr, -corr);
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p.setBrushOrigin((r.width() % pixSize + pixSize) / 2 + corr, (r.height() % pixSize + pixSize) / 2 + corr);
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p.fillRect(r, br);
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2017-05-01 03:16:25 +02:00
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p.fillRect(r.width() / 4 + corr, r.height() / 4 + corr, r.width() / 2, r.height() / 2, QColor(shownColor().rgb()));
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p.drawRect(pix.rect().adjusted(0, 0, -1, -1));
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return pix;
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}
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2016-07-16 23:12:02 +02:00
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/*!
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* \endcond
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*/
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2016-04-04 14:49:40 +02:00
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ColorButton::ColorButton(QWidget *parent)
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: QToolButton(parent)
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, d_ptr(new ColorButtonPrivate)
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2016-04-04 14:49:40 +02:00
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{
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d_ptr->q_ptr = this;
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d_ptr->m_dragging = false;
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d_ptr->m_backgroundCheckered = true;
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setAcceptDrops(true);
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connect(this, SIGNAL(clicked()), this, SLOT(slotEditColor()));
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setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred));
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}
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ColorButton::~ColorButton()
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{
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}
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void ColorButton::setColor(const QColor &color)
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{
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if (d_ptr->m_color == color)
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return;
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update();
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2019-05-19 17:47:34 +02:00
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emit colorChanged(d_ptr->m_color = color);
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2016-04-04 14:49:40 +02:00
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}
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QColor ColorButton::color() const
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{
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return d_ptr->m_color;
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}
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void ColorButton::setBackgroundCheckered(bool checkered)
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{
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if (d_ptr->m_backgroundCheckered == checkered)
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return;
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d_ptr->m_backgroundCheckered = checkered;
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update();
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}
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bool ColorButton::isBackgroundCheckered() const
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{
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return d_ptr->m_backgroundCheckered;
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}
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void ColorButton::paintEvent(QPaintEvent *event)
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{
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QToolButton::paintEvent(event);
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if (!isEnabled())
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return;
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const int pixSize = 10;
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QBrush br(d_ptr->shownColor());
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if (d_ptr->m_backgroundCheckered) {
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QPixmap pm(2 * pixSize, 2 * pixSize);
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QPainter pmp(&pm);
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pmp.fillRect(0, 0, pixSize, pixSize, Qt::white);
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pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::white);
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pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::black);
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pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::black);
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pmp.fillRect(0, 0, 2 * pixSize, 2 * pixSize, d_ptr->shownColor());
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br = QBrush(pm);
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}
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QPainter p(this);
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const int corr = 4;
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QRect r = rect().adjusted(corr, corr, -corr, -corr);
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p.setBrushOrigin((r.width() % pixSize + pixSize) / 2 + corr, (r.height() % pixSize + pixSize) / 2 + corr);
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p.fillRect(r, br);
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const QColor frameColor1(0, 0, 0, 26);
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p.setPen(frameColor1);
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p.drawRect(r.adjusted(1, 1, -2, -2));
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const QColor frameColor2(0, 0, 0, 51);
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p.setPen(frameColor2);
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p.drawRect(r.adjusted(0, 0, -1, -1));
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}
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void ColorButton::mousePressEvent(QMouseEvent *event)
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{
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#ifndef QT_NO_DRAGANDDROP
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if (event->button() == Qt::LeftButton)
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d_ptr->m_dragStart = event->pos();
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#endif
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QToolButton::mousePressEvent(event);
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}
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void ColorButton::mouseMoveEvent(QMouseEvent *event)
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{
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#ifndef QT_NO_DRAGANDDROP
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if (event->buttons() & Qt::LeftButton && (d_ptr->m_dragStart - event->pos()).manhattanLength() > QApplication::startDragDistance()) {
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2019-06-25 13:16:35 +02:00
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auto *const mime = new QMimeData;
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mime->setColorData(color());
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auto *const drg = new QDrag(this);
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drg->setMimeData(mime);
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drg->setPixmap(d_ptr->generatePixmap());
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setDown(false);
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event->accept();
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drg->exec(Qt::CopyAction);
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2016-04-04 14:49:40 +02:00
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return;
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}
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#endif
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QToolButton::mouseMoveEvent(event);
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}
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#ifndef QT_NO_DRAGANDDROP
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void ColorButton::dragEnterEvent(QDragEnterEvent *event)
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{
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const QMimeData *mime = event->mimeData();
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if (!mime->hasColor())
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return;
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event->accept();
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d_ptr->m_dragColor = qvariant_cast<QColor>(mime->colorData());
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d_ptr->m_dragging = true;
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update();
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}
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void ColorButton::dragLeaveEvent(QDragLeaveEvent *event)
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{
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event->accept();
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d_ptr->m_dragging = false;
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update();
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}
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void ColorButton::dropEvent(QDropEvent *event)
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{
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event->accept();
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d_ptr->m_dragging = false;
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if (d_ptr->m_dragColor == color())
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return;
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setColor(d_ptr->m_dragColor);
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}
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#endif
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2019-06-10 21:57:46 +02:00
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} // namespace QtUtilities
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2016-04-04 14:49:40 +02:00
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#include "moc_colorbutton.cpp"
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