qpaintdevice.h
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上传日期:2022-06-22
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- /****************************************************************************
- **
- ** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
- ** Contact: Qt Software Information (qt-info@nokia.com)
- **
- ** This file is part of the QtGui module of the Qt Toolkit.
- **
- ** Commercial Usage
- ** Licensees holding valid Qt Commercial licenses may use this file in
- ** accordance with the Qt Commercial License Agreement provided with the
- ** Software or, alternatively, in accordance with the terms contained in
- ** a written agreement between you and Nokia.
- **
- **
- ** GNU General Public License Usage
- ** Alternatively, this file may be used under the terms of the GNU
- ** General Public License versions 2.0 or 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 GNU General Public Licensing requirements will be met:
- ** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
- ** http://www.gnu.org/copyleft/gpl.html. In addition, as a special
- ** exception, Nokia gives you certain additional rights. These rights
- ** are described in the Nokia Qt GPL Exception version 1.3, included in
- ** the file GPL_EXCEPTION.txt in this package.
- **
- ** Qt for Windows(R) Licensees
- ** As a special exception, Nokia, as the sole copyright holder for Qt
- ** Designer, grants users of the Qt/Eclipse Integration plug-in the
- ** right for the Qt/Eclipse Integration to link to functionality
- ** provided by Qt Designer and its related libraries.
- **
- ** If you are unsure which license is appropriate for your use, please
- ** contact the sales department at qt-sales@nokia.com.
- **
- ****************************************************************************/
- #ifndef QPAINTDEVICE_H
- #define QPAINTDEVICE_H
- #include <QtGui/qwindowdefs.h>
- #include <QtCore/qrect.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- #if defined(Q_WS_QWS)
- class QWSDisplay;
- #endif
- class QPaintEngine;
- class Q_GUI_EXPORT QPaintDevice // device for QPainter
- {
- public:
- enum PaintDeviceMetric {
- PdmWidth = 1,
- PdmHeight,
- PdmWidthMM,
- PdmHeightMM,
- PdmNumColors,
- PdmDepth,
- PdmDpiX,
- PdmDpiY,
- PdmPhysicalDpiX,
- PdmPhysicalDpiY
- };
- virtual ~QPaintDevice();
- virtual int devType() const;
- bool paintingActive() const;
- virtual QPaintEngine *paintEngine() const = 0;
- #if defined(Q_WS_QWS)
- static QWSDisplay *qwsDisplay();
- #endif
- #ifdef Q_WS_WIN
- virtual HDC getDC() const;
- virtual void releaseDC(HDC hdc) const;
- #endif
- int width() const { return metric(PdmWidth); }
- int height() const { return metric(PdmHeight); }
- int widthMM() const { return metric(PdmWidthMM); }
- int heightMM() const { return metric(PdmHeightMM); }
- int logicalDpiX() const { return metric(PdmDpiX); }
- int logicalDpiY() const { return metric(PdmDpiY); }
- int physicalDpiX() const { return metric(PdmPhysicalDpiX); }
- int physicalDpiY() const { return metric(PdmPhysicalDpiY); }
- int numColors() const { return metric(PdmNumColors); }
- int depth() const { return metric(PdmDepth); }
- protected:
- QPaintDevice();
- virtual int metric(PaintDeviceMetric metric) const;
- ushort painters; // refcount
- private:
- Q_DISABLE_COPY(QPaintDevice)
- #if defined(Q_WS_X11) && defined(QT3_SUPPORT)
- public:
- QT3_SUPPORT Display *x11Display() const;
- QT3_SUPPORT int x11Screen() const;
- QT3_SUPPORT int x11Depth() const;
- QT3_SUPPORT int x11Cells() const;
- QT3_SUPPORT Qt::HANDLE x11Colormap() const;
- QT3_SUPPORT bool x11DefaultColormap() const;
- QT3_SUPPORT void *x11Visual() const;
- QT3_SUPPORT bool x11DefaultVisual() const;
- static QT3_SUPPORT Display *x11AppDisplay();
- static QT3_SUPPORT int x11AppScreen();
- static QT3_SUPPORT int x11AppDepth(int screen = -1);
- static QT3_SUPPORT int x11AppCells(int screen = -1);
- static QT3_SUPPORT Qt::HANDLE x11AppRootWindow(int screen = -1);
- static QT3_SUPPORT Qt::HANDLE x11AppColormap(int screen = -1);
- static QT3_SUPPORT void *x11AppVisual(int screen = -1);
- static QT3_SUPPORT bool x11AppDefaultColormap(int screen =-1);
- static QT3_SUPPORT bool x11AppDefaultVisual(int screen =-1);
- static QT3_SUPPORT int x11AppDpiX(int screen = -1);
- static QT3_SUPPORT int x11AppDpiY(int screen = -1);
- static QT3_SUPPORT void x11SetAppDpiX(int, int);
- static QT3_SUPPORT void x11SetAppDpiY(int, int);
- #endif
- friend class QPainter;
- friend class QFontEngineMac;
- friend class QX11PaintEngine;
- };
- #ifdef QT3_SUPPORT
- QT3_SUPPORT Q_GUI_EXPORT
- void bitBlt(QPaintDevice *dst, int dx, int dy,
- const QPaintDevice *src, int sx=0, int sy=0, int sw=-1, int sh=-1,
- bool ignoreMask=false);
- QT3_SUPPORT Q_GUI_EXPORT
- void bitBlt(QPaintDevice *dst, int dx, int dy,
- const QImage *src, int sx=0, int sy=0, int sw=-1, int sh=-1,
- int conversion_flags=0);
- QT3_SUPPORT Q_GUI_EXPORT
- void bitBlt(QPaintDevice *dst, const QPoint &dp,
- const QPaintDevice *src, const QRect &sr=QRect(0,0,-1,-1),
- bool ignoreMask=false);
- #endif
- /*****************************************************************************
- Inline functions
- *****************************************************************************/
- inline int QPaintDevice::devType() const
- { return QInternal::UnknownDevice; }
- inline bool QPaintDevice::paintingActive() const
- { return painters != 0; }
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QPAINTDEVICE_H