/***************************************************************************
**
** Copyright (C) 2015 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author Tobias Koenig <tobias.koenig@kdab.com>
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
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** accordance with the commercial license agreement provided with the
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** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
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** $QT_END_LICENSE$
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****************************************************************************/

#include "qhaikurasterbackingstore.h"
#include "qhaikurasterwindow.h"

#include <Bitmap.h>
#include <View.h>

QT_BEGIN_NAMESPACE

QHaikuRasterBackingStore::QHaikuRasterBackingStore(QWindow *window)
    : QPlatformBackingStore(window)
    , m_bitmap(nullptr)
{
}

QHaikuRasterBackingStore::~QHaikuRasterBackingStore()
{
    delete m_bitmap;
    m_bitmap = nullptr;
}

QPaintDevice *QHaikuRasterBackingStore::paintDevice()
{
    if (!m_bufferSize.isEmpty() && m_bitmap)
        return m_buffer.image();

    return nullptr;
}

void QHaikuRasterBackingStore::flush(QWindow *window, const QRegion &region, const QPoint &offset)
{
    Q_UNUSED(region);
    Q_UNUSED(offset);

    if (!window)
        return;

    QHaikuRasterWindow *targetWindow = static_cast<QHaikuRasterWindow*>(window->handle());

    BView *view = targetWindow->nativeViewHandle();

    view->LockLooper();
    view->DrawBitmap(m_bitmap);
    view->UnlockLooper();
}

void QHaikuRasterBackingStore::resize(const QSize &size, const QRegion &staticContents)
{
    Q_UNUSED(staticContents);

    if (m_bufferSize == size)
        return;

    delete m_bitmap;
    m_bitmap = new BBitmap(BRect(0, 0, size.width(), size.height()), B_RGB32, false, true);
    m_buffer = QHaikuBuffer(m_bitmap);
    m_bufferSize = size;
}

QT_END_NAMESPACE
