yhkylin-backup-tools/kybackup/component/myiconbutton.cpp

#include "myiconbutton.h"
#include <QFontMetrics>
#include <QHBoxLayout>
#include <QStyleOptionButton>
#include <QPainter>
#include <QApplication>
#include "imageutil.h"

MyIconButton::MyIconButton(QWidget *parent) :
    QPushButton(parent)
{
    this->setCheckable(false);

    m_iconButton = new QPushButton(this);
    m_iconButton->setCheckable(false);
    m_iconButton->setFixedSize(QSize(24, 24));
    m_iconButton->setFocusPolicy(Qt::NoFocus);
    m_iconButton->setFlat(true);

    m_textLabel = new MyLabel(this);
    QSizePolicy textLabelPolicy = m_textLabel->sizePolicy();
    textLabelPolicy.setHorizontalPolicy(QSizePolicy::Fixed);
    textLabelPolicy.setVerticalPolicy(QSizePolicy::Fixed);
    m_textLabel->setSizePolicy(textLabelPolicy);
    m_textLabel->setScaledContents(true);

    QHBoxLayout *hLayout = new QHBoxLayout();
    hLayout->setContentsMargins(8, 0, 0, 0);
    hLayout->addWidget(m_iconButton, Qt::AlignCenter);
    hLayout->addWidget(m_textLabel);
    hLayout->addStretch();
    setLayout(hLayout);

    connect(m_iconButton, &QPushButton::clicked, this, &MyIconButton::click);
//    connect(this, &QPushButton::toggled, this, [=] (bool checked) {
//        if (checked)
//            m_textLabel->setStyleSheet("color:white");
//        else
//            m_textLabel->setStyleSheet("color:palette(windowText)");
//    });
    connect(this, &QPushButton::toggled, this, &MyIconButton::changePalette);
}

MyIconButton::~MyIconButton()
{}

void MyIconButton::setThemeIcon(const QString &themeIconName, const QString &defaultIconName, int size)
{
    m_themeIconName = themeIconName;
    m_defaultIconName = defaultIconName;

    QIcon icon = QIcon::fromTheme(themeIconName, QIcon(defaultIconName));
    m_iconButton->setIcon(icon.pixmap(icon.actualSize(QSize(size, size))));
}

void MyIconButton::setDesplayText(const QString &text)
{
    m_originalText = text;
    m_textLabel->setDeplayText(text);
}

void MyIconButton::changePalette(bool checked)
{
    // m_iconButton->setChecked(checked);
    QPalette pal(m_textLabel->palette());
    QIcon icon = QIcon::fromTheme(m_themeIconName, QIcon(m_defaultIconName));
    QPixmap pix;
    if (checked) {
        pal.setColor(QPalette::ButtonText, pal.color(QPalette::HighlightedText));
        pix = ImageUtil::loadPixmap(icon, QString("white"));
    } else {
        pal.setColor(QPalette::ButtonText, pal.color(QPalette::WindowText));
        pix = ImageUtil::loadPixmap(icon, QString("default"));
    }
    m_textLabel->setPalette(pal);
    m_iconButton->setIcon(pix);
}

void MyIconButton::paintEvent(QPaintEvent *event)
{
    QPushButton::paintEvent(event);
    m_textLabel->setFixedWidth(this->width() - 38);
    m_textLabel->setDeplayText(m_originalText);
}