kwinxrenderutils.h

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/*
    KWin - the KDE window manager
    This file is part of the KDE project.
 
    SPDX-FileCopyrightText: 2008 Lubos Lunak <l.lunak@kde.org>
    SPDX-FileCopyrightText: 2022 MBition GmbH
    SPDX-FileContributor: Kai Uwe Broulik <kai_uwe.broulik@mbition.io>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
 
#pragma once
 
// KWin
#include <kwin_export.h>
// Qt
#include <QExplicitlySharedDataPointer>
// XCB
#include <xcb/render.h>
 
#include <memory>
 
class QImage;
 
namespace KWin
{
 
class KWIN_EXPORT XRenderPictureData
    : public QSharedData
{
public:
    explicit XRenderPictureData(xcb_render_picture_t pic = XCB_RENDER_PICTURE_NONE);
    ~XRenderPictureData();
    xcb_render_picture_t value();
 
private:
    xcb_render_picture_t picture;
    Q_DISABLE_COPY(XRenderPictureData)
};
 
class KWIN_EXPORT XRenderPicture
{
public:
    explicit XRenderPicture(xcb_render_picture_t pic = XCB_RENDER_PICTURE_NONE);
    explicit XRenderPicture(const QImage &img);
    XRenderPicture(xcb_pixmap_t pix, int depth);
    operator xcb_render_picture_t();
 
private:
    void fromImage(const QImage &img);
    std::unique_ptr<XRenderPictureData> d;
};
 
inline XRenderPictureData::XRenderPictureData(xcb_render_picture_t pic)
    : picture(pic)
{
}
 
inline xcb_render_picture_t XRenderPictureData::value()
{
    return picture;
}
 
inline XRenderPicture::XRenderPicture(xcb_render_picture_t pic)
    : d(std::make_unique<XRenderPictureData>(pic))
{
}
 
inline XRenderPicture::operator xcb_render_picture_t()
{
    return d->value();
}
 
namespace XRenderUtils
{
KWIN_EXPORT void init(xcb_connection_t *connection, xcb_window_t rootWindow);
 
KWIN_EXPORT xcb_render_pictformat_t findPictFormat(xcb_visualid_t visual);
 
KWIN_EXPORT const xcb_render_directformat_t *findPictFormatInfo(xcb_render_pictformat_t format);
 
KWIN_EXPORT void cleanup();
 
} // namespace XRenderUtils
 
} // namespace KWin