3 #include <QApplication> 4 #include <QColorDialog> 6 #include <QDragEnterEvent> 16 class ColorButtonPrivate {
18 Q_DECLARE_PUBLIC(ColorButton)
21 #ifndef QT_NO_DRAGANDDROP 26 bool m_backgroundCheckered;
29 QColor shownColor()
const;
30 QPixmap generatePixmap()
const;
33 void ColorButtonPrivate::slotEditColor()
35 const QColor newColor = QColorDialog::getColor(m_color, q_ptr, QString(), QColorDialog::ShowAlphaChannel);
36 if (!newColor.isValid() || newColor == q_ptr->color())
38 q_ptr->setColor(newColor);
39 emit q_ptr->colorChanged(m_color);
42 QColor ColorButtonPrivate::shownColor()
const 44 #ifndef QT_NO_DRAGANDDROP 51 QPixmap ColorButtonPrivate::generatePixmap()
const 56 QBrush br(shownColor());
58 QPixmap pm(2 * pixSize, 2 * pixSize);
60 pmp.fillRect(0, 0, pixSize, pixSize, Qt::lightGray);
61 pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::lightGray);
62 pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::darkGray);
63 pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::darkGray);
64 pmp.fillRect(0, 0, 2 * pixSize, 2 * pixSize, shownColor());
69 QRect r = pix.rect().adjusted(corr, corr, -corr, -corr);
70 p.setBrushOrigin((r.width() % pixSize + pixSize) / 2 + corr, (r.height() % pixSize + pixSize) / 2 + corr);
73 p.fillRect(r.width() / 4 + corr, r.height() / 4 + corr, r.width() / 2, r.height() / 2, QColor(shownColor().rgb()));
74 p.drawRect(pix.rect().adjusted(0, 0, -1, -1));
85 , d_ptr(new ColorButtonPrivate)
88 d_ptr->m_dragging =
false;
89 d_ptr->m_backgroundCheckered =
true;
93 connect(
this, SIGNAL(clicked()),
this, SLOT(slotEditColor()));
94 setSizePolicy(QSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred));
103 if (d_ptr->m_color == color)
105 d_ptr->m_color =
color;
111 return d_ptr->m_color;
116 if (d_ptr->m_backgroundCheckered == checkered)
118 d_ptr->m_backgroundCheckered = checkered;
124 return d_ptr->m_backgroundCheckered;
129 QToolButton::paintEvent(event);
133 const int pixSize = 10;
134 QBrush br(d_ptr->shownColor());
135 if (d_ptr->m_backgroundCheckered) {
136 QPixmap pm(2 * pixSize, 2 * pixSize);
138 pmp.fillRect(0, 0, pixSize, pixSize, Qt::white);
139 pmp.fillRect(pixSize, pixSize, pixSize, pixSize, Qt::white);
140 pmp.fillRect(0, pixSize, pixSize, pixSize, Qt::black);
141 pmp.fillRect(pixSize, 0, pixSize, pixSize, Qt::black);
142 pmp.fillRect(0, 0, 2 * pixSize, 2 * pixSize, d_ptr->shownColor());
148 QRect r = rect().adjusted(corr, corr, -corr, -corr);
149 p.setBrushOrigin((r.width() % pixSize + pixSize) / 2 + corr, (r.height() % pixSize + pixSize) / 2 + corr);
169 const QColor frameColor1(0, 0, 0, 26);
170 p.setPen(frameColor1);
171 p.drawRect(r.adjusted(1, 1, -2, -2));
172 const QColor frameColor2(0, 0, 0, 51);
173 p.setPen(frameColor2);
174 p.drawRect(r.adjusted(0, 0, -1, -1));
179 #ifndef QT_NO_DRAGANDDROP 180 if (event->button() == Qt::LeftButton)
181 d_ptr->m_dragStart = event->pos();
183 QToolButton::mousePressEvent(event);
188 #ifndef QT_NO_DRAGANDDROP 189 if (event->buttons() & Qt::LeftButton && (d_ptr->m_dragStart -
event->pos()).manhattanLength() > QApplication::startDragDistance()) {
190 QMimeData *mime =
new QMimeData;
191 mime->setColorData(
color());
192 QDrag *drg =
new QDrag(
this);
193 drg->setMimeData(mime);
194 drg->setPixmap(d_ptr->generatePixmap());
201 QToolButton::mouseMoveEvent(event);
204 #ifndef QT_NO_DRAGANDDROP 207 const QMimeData *mime =
event->mimeData();
208 if (!mime->hasColor())
212 d_ptr->m_dragColor = qvariant_cast<QColor>(mime->colorData());
213 d_ptr->m_dragging =
true;
220 d_ptr->m_dragging =
false;
227 d_ptr->m_dragging =
false;
228 if (d_ptr->m_dragColor ==
color())
236 #include "moc_colorbutton.cpp"