C++ QCheckBox::setIconSize方法代码示例

QAbstractButton* MainWindow::createIconButton(const QString &iconPath, const QString &text, QWidget *parent) const
{
    QCheckBox *button = new QCheckBox(text, parent);

    //button->setIcon(QIcon(iconPath));
    button->setStyleSheet("QCheckBox::indicator { image: url(" + iconPath.arg("") + "); }"
                          "QCheckBox::indicator:hover { image: url(" + iconPath.arg("_hovered") + "); }"
                          "QCheckBox::indicator:pressed { image: url(" + iconPath.arg("_pressed") + "); }");
    button->setIconSize(QImage(iconPath).size());
    button->setContentsMargins(0, 0, 0, 0);
    button->setCursor(Qt::PointingHandCursor);
    button->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Fixed);

    return button;
}

///
/// \brief Widget::loadIcons
/// load all icons from items.json
void Widget::loadIcons() {
    QFile file;
    QString txt;
    file.setFileName(":/resources/items.json");

    file.open(QIODevice::ReadOnly | QIODevice::Text);
    txt = file.readAll();
    file.close();

    // parse JSON
    QJsonDocument doc = QJsonDocument::fromJson(txt.toUtf8());
    QJsonObject obj = doc.object();
    for (auto it = obj.begin(); it != obj.end(); ++it) {
        QCheckBox* check = new QCheckBox();
        check->setText((*it).toObject().value("complete_name").toString());
        check->setIcon(QIcon((*it).toObject().value("icon").toString()));
        check->setIconSize(QSize(50,50));
        ui->gridLayout->addWidget(check);
    }
}

void rareColorsDialog::processNewMin(int min) {

    // clean out the old rows
    for (int i = checkboxes_.size() - 1; i >= 0; --i) {
        delete checkboxes_.takeAt(i);
    }
    // see sarcastic note about this krap at the bottom of this bleepin
    // function
    delete scrollWidget_; // deletes any children
    scrollWidget_ = new QWidget(scroll_);
    colorsLayout_ = new QVBoxLayout;
    scrollWidget_->setLayout(colorsLayout_);

    QList<QRgb> rareColors;
    QList<QRgb> commonColors;
    for (QHash<QRgb, int>::const_iterator it = colorCounts_.begin();
            it != colorCounts_.end(); ++it) {
        if (it.value() <= min) {
            rareColors.push_back(it.key());
        }
        else {
            commonColors.push_back(it.key());
        }
    }
    // sort the rare colors by intensity
    qSort(rareColors.begin(), rareColors.end(), qRgbIntensity());
    if (!commonColors.isEmpty() && !rareColors.isEmpty()) {
        // each row consists of a checkbox saying whether or not to include
        // the row's color, followed by the rare color and its count and then
        // the replacement color for the rare color
        for (int i = 0, size = rareColors.size(); i < size; ++i) {

            QRgb thisOldColor = rareColors[i];

            // find the new color
            QRgb thisNewColor = ::closestMatch(thisOldColor, commonColors);
            const int thisColorCount = colorCounts_[thisOldColor];
            const QString squareString = (thisColorCount == 1) ?
                                         " square " : " squares ";
            const QString iconString(::itoqs(thisColorCount) + squareString +
                                     ::colorToPrettyString(thisOldColor) + " --> " +
                                     ::colorToPrettyString(thisNewColor));
            QCheckBox* checkBox = new QCheckBox(iconString);
            const QPixmap iconPixmap = createIconPixmap(thisOldColor, thisNewColor);
            checkBox->setIconSize(QSize(ICON_SIZE, ICON_SIZE));
            checkBox->setIcon(QIcon(iconPixmap));
            checkBox->setChecked(true);
            checkboxes_.push_back(checkBox);
            colorsLayout_->addWidget(checkBox);
        }
    }
    else if (rareColors.isEmpty()) {
        noRareColorsLabel_ =
            new QLabel(tr("There aren't any colors that occur ") +
                       ::itoqs(minCountBox_->value()) + " or fewer times!");
        colorsLayout_->addWidget(noRareColorsLabel_);
    }
    else if (commonColors.isEmpty()) {
        noReplacementColorsLabel_ =
            new QLabel(tr("There are no replacement colors available!"));
        colorsLayout_->addWidget(noReplacementColorsLabel_);
    }

    scrollWidget_->resize(colorsLayout_->sizeHint());
    // if you put this up where the other stuff gets recreated (or you don't
    // recreate the other stuff) then on the second and all later runs
    // through this function colorsLayout_->sizeHint() will return (18, 18).
    // Obviously.
    scroll_->setWidget(scrollWidget_);
}