qt-material-widgets/components/flatbutton.cpp

#include "flatbutton.h"
#include <QPainter>
#include <QMouseEvent>
#include <QStylePainter>
#include <QStyleOption>
#include <QDebug>
#include "lib/style.h"
#include "lib/rippleoverlay.h"

FlatButton::FlatButton(QWidget *parent)
    : QPushButton(parent),
      _ripple(new RippleOverlay(this))
{
    setStyle(&Style::instance());
    setAttribute(Qt::WA_Hover);
    setMouseTracking(true);

    QFont f(font());
    f.setCapitalization(QFont::AllUppercase);
    f.setPointSizeF(10.5);
    f.setStyleName("Medium");
    setFont(f);
}

FlatButton::FlatButton(const QString &text, QWidget *parent)
    : QPushButton(parent),
      _ripple(new RippleOverlay(this))
{
    setText(text);

    setStyle(&Style::instance());
    setAttribute(Qt::WA_Hover);
    setMouseTracking(true);

    QFont f(font());
    f.setCapitalization(QFont::AllUppercase);
    f.setPointSizeF(10.5);
    f.setStyleName("Medium");
    setFont(f);
}

FlatButton::~FlatButton()
{
}

void FlatButton::resizeEvent(QResizeEvent *event)
{
    if (_ripple) {
        _ripple->setGeometry(rect());
    }

    QPushButton::resizeEvent(event);
}

void FlatButton::paintEvent(QPaintEvent *event)
{
    Q_UNUSED(event)

    //painter.drawRect(rect().adjusted(0, 0, -1, -1));

    QStylePainter painter(this);

    QStyleOptionButton option;
    initStyleOption(&option);
    option.features |= QStyleOptionButton::Flat;

    painter.drawControl(QStyle::CE_PushButtonLabel, option);

    if (testAttribute(Qt::WA_Hover) && underMouse())
    {
        QPainter painter(this);
        QBrush brush;
        brush.setStyle(Qt::SolidPattern);
        painter.setOpacity(0.1);
        painter.fillRect(rect(), brush);
    }

#ifdef DEBUG_LAYOUT
    QPainter debug(this);
    QPen pen;
    pen.setColor(Qt::red);
    pen.setWidth(2);
    debug.setPen(pen);
    debug.drawRect(rect());
#endif
}

void FlatButton::mousePressEvent(QMouseEvent *event)
{
    _ripple->addRipple(event->pos());

    QPushButton::mousePressEvent(event);
}

void FlatButton::enterEvent(QEvent *event)
{
    update();

    QPushButton::enterEvent(event);
}

void FlatButton::leaveEvent(QEvent *event)
{
    update();

    QPushButton::leaveEvent(event);
}