qt-everywhere-src-5.15.1/qtquickcontrols2/src/imports/platform/qquickplatformiconloader.cpp

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#include "qquickplatformiconloader_p.h"

#include <QtCore/qobject.h>
#include <QtCore/qmetaobject.h>
#include <QtQml/qqml.h>

QT_BEGIN_NAMESPACE

QQuickPlatformIconLoader::QQuickPlatformIconLoader(int slot, QObject *parent)
    : m_parent(parent),
      m_slot(slot),
      m_enabled(false)
{
    Q_ASSERT(slot != -1 && parent);
}

bool QQuickPlatformIconLoader::isEnabled() const
{
    return m_enabled;
}

void QQuickPlatformIconLoader::setEnabled(bool enabled)
{
    m_enabled = enabled;
    if (m_enabled)
        loadIcon();
}

QIcon QQuickPlatformIconLoader::toQIcon() const
{
    QIcon fallback = QPixmap::fromImage(image());
    QIcon icon = QIcon::fromTheme(m_icon.name(), fallback);
    icon.setIsMask(m_icon.isMask());
    return icon;
}

QQuickPlatformIcon QQuickPlatformIconLoader::icon() const
{
    return m_icon;
}

void QQuickPlatformIconLoader::setIcon(const QQuickPlatformIcon& icon)
{
    m_icon = icon;
    if (m_enabled)
        loadIcon();
}

void QQuickPlatformIconLoader::loadIcon()
{
    if (m_icon.source().isEmpty()) {
        clear(m_parent);
    } else {
        load(qmlEngine(m_parent), m_icon.source());
        if (m_slot != -1 && isLoading()) {
            connectFinished(m_parent, m_slot);
            m_slot = -1;
        }
    }

    if (!isLoading())
        m_parent->metaObject()->method(m_slot).invoke(m_parent);
}

QT_END_NAMESPACE