qt-material-widgets/components/drawer.cpp

124 lines
2.4 KiB
C++

#include "drawer.h"
#include "drawer_p.h"
#include <QPainter>
#include <QEvent>
#include <QApplication>
#include <QLayout>
#include <QLinearGradient>
#include <QVBoxLayout>
#include "drawer_internal.h"
DrawerPrivate::DrawerPrivate(Drawer *q)
: q_ptr(q),
stateMachine(new DrawerStateMachine(q)),
window(new QWidget),
width(250)
{
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(window);
q->setLayout(layout);
q->setFixedWidth(width+16);
stateMachine->start();
QCoreApplication::processEvents();
}
Drawer::Drawer(QWidget *parent)
: OverlayWidget(parent),
d_ptr(new DrawerPrivate(this))
{
}
Drawer::~Drawer()
{
}
void Drawer::setDrawerWidth(int width)
{
Q_D(Drawer);
d->width = width;
d->stateMachine->updatePropertyAssignments();
setFixedWidth(width+16);
}
int Drawer::drawerWidth() const
{
Q_D(const Drawer);
return d->width;
}
void Drawer::setDrawerLayout(QLayout *layout)
{
Q_D(Drawer);
d->window->setLayout(layout);
}
QLayout *Drawer::drawerLayout() const
{
Q_D(const Drawer);
return d->window->layout();
}
void Drawer::openDrawer()
{
Q_D(Drawer);
emit d->stateMachine->enterOpenedState();
}
void Drawer::closeDrawer()
{
Q_D(Drawer);
emit d->stateMachine->enterClosedState();
}
bool Drawer::eventFilter(QObject *obj, QEvent *event)
{
const QEvent::Type type = event->type();
if (QEvent::Move == type || QEvent::Resize == type) {
QLayout *t = layout();
if (t && 16 != t->contentsMargins().right()) {
t->setContentsMargins(0, 0, 16, 0);
}
}
return OverlayWidget::eventFilter(obj, event);
}
void Drawer::paintEvent(QPaintEvent *event)
{
Q_UNUSED(event)
QPainter painter(this);
QBrush brush;
brush.setStyle(Qt::SolidPattern);
brush.setColor(Qt::white);
painter.setBrush(brush);
painter.setPen(Qt::NoPen);
painter.drawRect(rect().adjusted(0, 0, -16, 0));
QLinearGradient gradient(QPointF(width()-16, 0), QPointF(width(), 0));
gradient.setColorAt(0, QColor(0, 0, 0, 80));
gradient.setColorAt(0.5, QColor(0, 0, 0, 20));
gradient.setColorAt(1, QColor(0, 0, 0, 0));
painter.setBrush(QBrush(gradient));
painter.drawRect(width()-16, 0, 16, height());
}
QRect Drawer::overlayGeometry() const
{
Q_D(const Drawer);
return OverlayWidget::overlayGeometry().translated(d->stateMachine->offset(), 0);
}