/**************************************************************************** | |
** | |
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). | |
** All rights reserved. | |
** Contact: Nokia Corporation (qt-info@nokia.com) | |
** | |
** This file is part of the tools applications of the Qt Toolkit. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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 1.1, 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. | |
** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
** | |
** | |
** | |
** | |
** | |
** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#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() | |
{ | |
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->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" |