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Diffstat (limited to 'qtcolorbutton/qtcolorbutton.cpp')
| -rw-r--r-- | qtcolorbutton/qtcolorbutton.cpp | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/qtcolorbutton/qtcolorbutton.cpp b/qtcolorbutton/qtcolorbutton.cpp new file mode 100644 index 0000000..21b9848 --- /dev/null +++ b/qtcolorbutton/qtcolorbutton.cpp @@ -0,0 +1,278 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the tools applications of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial Usage +** Licensees holding valid Qt Commercial licenses may use this file in +** accordance with the Qt Commercial License Agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Nokia. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qtcolorbutton.h" +#include <QtGui/QColorDialog> +#include <QtGui/QPainter> +#include <QtCore/QMimeData> +#include <QtGui/QDragEnterEvent> +#include <QtGui/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() +{ + bool ok; + const QRgb rgba = QColorDialog::getRgba(m_color.rgba(), &ok, q_ptr); + if (!ok) + return; + const QColor c = QColor::fromRgba(rgba); + if (c == q_ptr->color()) + return; + q_ptr->setColor(c); + 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() +{ + delete d_ptr; +} + +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->start(); + 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" |