// Copyright (C) 2016 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

// Qt-Security score:significant reason:default

#include "qshapedpixmapdndwindow_p.h"

#include "qplatformwindow.h"

#include <QtGui/QPainter>

#include <QtGui/QCursor>

#include <QtGui/QGuiApplication>

#include <QtGui/QPalette>

#include <QtGui/QBitmap>

QT_BEGIN_NAMESPACE

QShapedPixmapWindow::QShapedPixmapWindow(QScreen *screen)

    : m_useCompositing(true)

{

    setScreen(screen);

    QSurfaceFormat format;

    format.setAlphaBufferSize(8);

    setFormat(format);

    setFlags(Qt::FramelessWindowHint | Qt::BypassWindowManagerHint

             | Qt::WindowTransparentForInput | Qt::WindowDoesNotAcceptFocus);

}

QShapedPixmapWindow::~QShapedPixmapWindow()

{

}

void QShapedPixmapWindow::setPixmap(const QPixmap &pixmap)

{

    m_pixmap = pixmap;

    if (!m_useCompositing) {

        const QBitmap mask = m_pixmap.mask();

        if (!mask.isNull()) {

            if (!handle())

                create();

            if (auto platformWindow = handle()) {

                const auto pixmapDpr = m_pixmap.devicePixelRatio();

                const auto winDpr = devicePixelRatio();

                const auto maskSize = (QSizeF(m_pixmap.size()) * winDpr / pixmapDpr).toSize();

                platformWindow->setMask(QBitmap::fromPixmap(mask.scaled(maskSize)));

            }

        }

    }

}

void QShapedPixmapWindow::setHotspot(const QPoint &hotspot)

{

    m_hotSpot = hotspot;

}

void QShapedPixmapWindow::paintEvent(QPaintEvent *)

{

    if (!m_pixmap.isNull()) {

        const QRect rect(QPoint(0, 0), size());

        QPainter painter(this);

        if (m_useCompositing)

            painter.setCompositionMode(QPainter::CompositionMode_Source);

        else

            painter.fillRect(rect, QGuiApplication::palette().base());

        painter.drawPixmap(rect, m_pixmap);

    }

}

void QShapedPixmapWindow::updateGeometry(const QPoint &pos)

{

    QSize size(1, 1);

    if (!m_pixmap.isNull()) {

        size = m_pixmap.deviceIndependentSize().toSize();

    }

    setGeometry(QRect(pos - m_hotSpot, size));

}

QT_END_NAMESPACE

#include "moc_qshapedpixmapdndwindow_p.cpp"