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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| ** This file is part of the tools applications of the Qt Toolkit. |
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| ** $QT_BEGIN_LICENSE:LGPL$ |
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| ** Alternatively, this file may be used under the terms of the GNU |
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| ** Public license version 3 or any later version approved by the KDE Free |
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| ****************************************************************************/ |
| |
| #include "qtcolorbutton.h" |
| #include <QtWidgets/QColorDialog> |
| #include <QtGui/QPainter> |
| #include <QtCore/QMimeData> |
| #include <QtGui/QDragEnterEvent> |
| #include <QtGui/QDrag> |
| #include <QtWidgets/QApplication> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QtColorButtonPrivate |
| { |
| QtColorButton *q_ptr; |
| Q_DECLARE_PUBLIC(QtColorButton) |
| public: |
| QColor m_color; |
| #ifndef QT_NO_DRAGANDDROP |
| QColor m_dragColor; |
| QPoint m_dragStart; |
| bool m_dragging; |
| #endif |
| bool m_backgroundCheckered; |
| |
| void slotEditColor(); |
| QColor shownColor() const; |
| QPixmap generatePixmap() const; |
| }; |
| |
| void QtColorButtonPrivate::slotEditColor() |
| { |
| const QColor newColor = QColorDialog::getColor(m_color, q_ptr, QString(), QColorDialog::ShowAlphaChannel); |
| if (!newColor.isValid() || newColor == q_ptr->color()) |
| return; |
| q_ptr->setColor(newColor); |
| emit q_ptr->colorChanged(m_color); |
| } |
| |
| QColor QtColorButtonPrivate::shownColor() const |
| { |
| #ifndef QT_NO_DRAGANDDROP |
| if (m_dragging) |
| return m_dragColor; |
| #endif |
| return m_color; |
| } |
| |
| QPixmap QtColorButtonPrivate::generatePixmap() const |
| { |
| QPixmap pix(24, 24); |
| |
| int pixSize = 20; |
| QBrush br(shownColor()); |
| |
| QPixmap pm(2 * pixSize, 2 * pixSize); |
| QPainter pmp(&pm); |
| pmp.fillRect(0, 0, pixSize, pixSize, Qt::lightGray); |
| pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::lightGray); |
| pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::darkGray); |
| pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::darkGray); |
| pmp.fillRect(0, 0, 2 * pixSize, 2 * pixSize, shownColor()); |
| br = QBrush(pm); |
| |
| QPainter p(&pix); |
| int corr = 1; |
| QRect r = pix.rect().adjusted(corr, corr, -corr, -corr); |
| p.setBrushOrigin((r.width() % pixSize + pixSize) / 2 + corr, (r.height() % pixSize + pixSize) / 2 + corr); |
| p.fillRect(r, br); |
| |
| p.fillRect(r.width() / 4 + corr, r.height() / 4 + corr, |
| r.width() / 2, r.height() / 2, |
| QColor(shownColor().rgb())); |
| p.drawRect(pix.rect().adjusted(0, 0, -1, -1)); |
| |
| return pix; |
| } |
| |
| /////////////// |
| |
| QtColorButton::QtColorButton(QWidget *parent) |
| : QToolButton(parent), d_ptr(new QtColorButtonPrivate) |
| { |
| d_ptr->q_ptr = this; |
| d_ptr->m_dragging = false; |
| d_ptr->m_backgroundCheckered = true; |
| |
| setAcceptDrops(true); |
| |
| connect(this, SIGNAL(clicked()), this, SLOT(slotEditColor())); |
| setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred)); |
| } |
| |
| QtColorButton::~QtColorButton() |
| { |
| } |
| |
| void QtColorButton::setColor(const QColor &color) |
| { |
| if (d_ptr->m_color == color) |
| return; |
| d_ptr->m_color = color; |
| update(); |
| } |
| |
| QColor QtColorButton::color() const |
| { |
| return d_ptr->m_color; |
| } |
| |
| void QtColorButton::setBackgroundCheckered(bool checkered) |
| { |
| if (d_ptr->m_backgroundCheckered == checkered) |
| return; |
| d_ptr->m_backgroundCheckered = checkered; |
| update(); |
| } |
| |
| bool QtColorButton::isBackgroundCheckered() const |
| { |
| return d_ptr->m_backgroundCheckered; |
| } |
| |
| void QtColorButton::paintEvent(QPaintEvent *event) |
| { |
| QToolButton::paintEvent(event); |
| if (!isEnabled()) |
| return; |
| |
| const int pixSize = 10; |
| QBrush br(d_ptr->shownColor()); |
| if (d_ptr->m_backgroundCheckered) { |
| QPixmap pm(2 * pixSize, 2 * pixSize); |
| QPainter pmp(&pm); |
| pmp.fillRect(0, 0, pixSize, pixSize, Qt::white); |
| pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::white); |
| pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::black); |
| pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::black); |
| pmp.fillRect(0, 0, 2 * pixSize, 2 * pixSize, d_ptr->shownColor()); |
| br = QBrush(pm); |
| } |
| |
| QPainter p(this); |
| const int corr = 4; |
| QRect r = rect().adjusted(corr, corr, -corr, -corr); |
| p.setBrushOrigin((r.width() % pixSize + pixSize) / 2 + corr, (r.height() % pixSize + pixSize) / 2 + corr); |
| p.fillRect(r, br); |
| |
| //const int adjX = qRound(r.width() / 4.0); |
| //const int adjY = qRound(r.height() / 4.0); |
| //p.fillRect(r.adjusted(adjX, adjY, -adjX, -adjY), |
| // QColor(d_ptr->shownColor().rgb())); |
| /* |
| p.fillRect(r.adjusted(0, r.height() * 3 / 4, 0, 0), |
| QColor(d_ptr->shownColor().rgb())); |
| p.fillRect(r.adjusted(0, 0, 0, -r.height() * 3 / 4), |
| QColor(d_ptr->shownColor().rgb())); |
| */ |
| /* |
| const QColor frameColor0(0, 0, 0, qRound(0.2 * (0xFF - d_ptr->shownColor().alpha()))); |
| p.setPen(frameColor0); |
| p.drawRect(r.adjusted(adjX, adjY, -adjX - 1, -adjY - 1)); |
| */ |
| |
| const QColor frameColor1(0, 0, 0, 26); |
| p.setPen(frameColor1); |
| p.drawRect(r.adjusted(1, 1, -2, -2)); |
| const QColor frameColor2(0, 0, 0, 51); |
| p.setPen(frameColor2); |
| p.drawRect(r.adjusted(0, 0, -1, -1)); |
| } |
| |
| void QtColorButton::mousePressEvent(QMouseEvent *event) |
| { |
| #ifndef QT_NO_DRAGANDDROP |
| if (event->button() == Qt::LeftButton) |
| d_ptr->m_dragStart = event->pos(); |
| #endif |
| QToolButton::mousePressEvent(event); |
| } |
| |
| void QtColorButton::mouseMoveEvent(QMouseEvent *event) |
| { |
| #ifndef QT_NO_DRAGANDDROP |
| if (event->buttons() & Qt::LeftButton && |
| (d_ptr->m_dragStart - event->pos()).manhattanLength() > QApplication::startDragDistance()) { |
| QMimeData *mime = new QMimeData; |
| mime->setColorData(color()); |
| QDrag *drg = new QDrag(this); |
| drg->setMimeData(mime); |
| drg->setPixmap(d_ptr->generatePixmap()); |
| setDown(false); |
| event->accept(); |
| drg->exec(Qt::CopyAction); |
| return; |
| } |
| #endif |
| QToolButton::mouseMoveEvent(event); |
| } |
| |
| #ifndef QT_NO_DRAGANDDROP |
| void QtColorButton::dragEnterEvent(QDragEnterEvent *event) |
| { |
| const QMimeData *mime = event->mimeData(); |
| if (!mime->hasColor()) |
| return; |
| |
| event->accept(); |
| d_ptr->m_dragColor = qvariant_cast<QColor>(mime->colorData()); |
| d_ptr->m_dragging = true; |
| update(); |
| } |
| |
| void QtColorButton::dragLeaveEvent(QDragLeaveEvent *event) |
| { |
| event->accept(); |
| d_ptr->m_dragging = false; |
| update(); |
| } |
| |
| void QtColorButton::dropEvent(QDropEvent *event) |
| { |
| event->accept(); |
| d_ptr->m_dragging = false; |
| if (d_ptr->m_dragColor == color()) |
| return; |
| setColor(d_ptr->m_dragColor); |
| emit colorChanged(color()); |
| } |
| #endif |
| |
| QT_END_NAMESPACE |
| |
| #include "moc_qtcolorbutton.cpp" |