qwindowsurface_raster_p.h

Go to the documentation of this file.

/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QWINDOWSURFACE_RASTER_P_H
#define QWINDOWSURFACE_RASTER_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of the QLibrary class.  This header file may change from
// version to version without notice, or even be removed.
//
// We mean it.
//

#include <qglobal.h>
#include "private/qwindowsurface_p.h"

#ifdef QT_MAC_USE_COCOA
# include <private/qt_cocoa_helpers_mac_p.h>
#endif // QT_MAC_USE_COCOA

QT_BEGIN_NAMESPACE

#ifdef Q_WS_WIN
#define Q_WS_EX_LAYERED           0x00080000 // copied from WS_EX_LAYERED in winuser.h
#define Q_LWA_ALPHA               0x00000002 // copied from LWA_ALPHA in winuser.h
#define Q_ULW_ALPHA               0x00000002 // copied from ULW_ALPHA in winuser.h
#define Q_AC_SRC_ALPHA            0x00000001 // copied from AC_SRC_ALPHA in winuser.h

struct Q_UPDATELAYEREDWINDOWINFO {
    DWORD cbSize;
    HDC hdcDst;
    const POINT *pptDst;
    const SIZE *psize;
    HDC hdcSrc;
    const POINT *pptSrc;
    COLORREF crKey;
    const BLENDFUNCTION *pblend;
    DWORD dwFlags;
    const RECT *prcDirty;
};

typedef BOOL (WINAPI *PtrUpdateLayeredWindow)(HWND hwnd, HDC hdcDst, const POINT *pptDst,
             const SIZE *psize, HDC hdcSrc, const POINT *pptSrc, COLORREF crKey,
             const BLENDFUNCTION *pblend, DWORD dwflags);
typedef BOOL (WINAPI *PtrUpdateLayeredWindowIndirect)(HWND hwnd, const Q_UPDATELAYEREDWINDOWINFO *pULWInfo);
extern PtrUpdateLayeredWindow ptrUpdateLayeredWindow;
extern PtrUpdateLayeredWindowIndirect ptrUpdateLayeredWindowIndirect;
#endif

class QPaintDevice;
class QPoint;
class QRegion;
class QRegion;
class QSize;
class QWidget;
class QRasterWindowSurfacePrivate;
class QNativeImage;

class Q_GUI_EXPORT QRasterWindowSurface : public QWindowSurface
{
public:
    QRasterWindowSurface(QWidget *widget, bool setDefaultSurface = true);
    ~QRasterWindowSurface();

    QPaintDevice *paintDevice();
    void flush(QWidget *widget, const QRegion &region, const QPoint &offset);
    void beginPaint(const QRegion &rgn);
    void setGeometry(const QRect &rect);
    bool scroll(const QRegion &area, int dx, int dy);
    WindowSurfaceFeatures features() const;

#ifdef QT_MAC_USE_COCOA
    CGContextRef imageContext();

    bool needsFlush;
    QRegion regionToFlush;
#endif // QT_MAC_USE_COCOA

private:
#if defined(Q_WS_X11) && !defined(QT_NO_MITSHM)
    void syncX();
#endif
    void prepareBuffer(QImage::Format format, QWidget *widget);
    Q_DECLARE_PRIVATE(QRasterWindowSurface)
    QScopedPointer<QRasterWindowSurfacePrivate> d_ptr;
};

QT_END_NAMESPACE

#endif // QWINDOWSURFACE_RASTER_P_H