qscreen_qws.h
上传用户:detong
上传日期:2022-06-22
资源大小:20675k
文件大小:12k
- /****************************************************************************
- **
- ** 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.
- **
- ** 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 QSCREEN_QWS_H
- #define QSCREEN_QWS_H
- #include <QtCore/qnamespace.h>
- #include <QtCore/qpoint.h>
- #include <QtCore/qlist.h>
- #include <QtGui/qrgb.h>
- #include <QtCore/qrect.h>
- #include <QtGui/qimage.h>
- #include <QtGui/qregion.h>
- QT_BEGIN_HEADER
- QT_BEGIN_NAMESPACE
- QT_MODULE(Gui)
- class QScreenCursor;
- class QBrush;
- class QWSWindow;
- class QWSWindowSurface;
- class QPixmapData;
- #ifndef QT_QWS_DEPTH16_RGB
- #define QT_QWS_DEPTH16_RGB 565
- #endif
- static const int qt_rbits = (QT_QWS_DEPTH16_RGB/100);
- static const int qt_gbits = (QT_QWS_DEPTH16_RGB/10%10);
- static const int qt_bbits = (QT_QWS_DEPTH16_RGB%10);
- static const int qt_red_shift = qt_bbits+qt_gbits-(8-qt_rbits);
- static const int qt_green_shift = qt_bbits-(8-qt_gbits);
- static const int qt_neg_blue_shift = 8-qt_bbits;
- static const int qt_blue_mask = (1<<qt_bbits)-1;
- static const int qt_green_mask = (1<<(qt_gbits+qt_bbits))-(1<<qt_bbits);
- static const int qt_red_mask = (1<<(qt_rbits+qt_gbits+qt_bbits))-(1<<(qt_gbits+qt_bbits));
- static const int qt_red_rounding_shift = qt_red_shift + qt_rbits;
- static const int qt_green_rounding_shift = qt_green_shift + qt_gbits;
- static const int qt_blue_rounding_shift = qt_bbits - qt_neg_blue_shift;
- inline ushort qt_convRgbTo16(const int r, const int g, const int b)
- {
- const int tr = r << qt_red_shift;
- const int tg = g << qt_green_shift;
- const int tb = b >> qt_neg_blue_shift;
- return (tb & qt_blue_mask) | (tg & qt_green_mask) | (tr & qt_red_mask);
- }
- inline ushort qt_convRgbTo16(QRgb c)
- {
- const int tr = qRed(c) << qt_red_shift;
- const int tg = qGreen(c) << qt_green_shift;
- const int tb = qBlue(c) >> qt_neg_blue_shift;
- return (tb & qt_blue_mask) | (tg & qt_green_mask) | (tr & qt_red_mask);
- }
- inline QRgb qt_conv16ToRgb(ushort c)
- {
- const int r=(c & qt_red_mask);
- const int g=(c & qt_green_mask);
- const int b=(c & qt_blue_mask);
- const int tr = r >> qt_red_shift | r >> qt_red_rounding_shift;
- const int tg = g >> qt_green_shift | g >> qt_green_rounding_shift;
- const int tb = b << qt_neg_blue_shift | b >> qt_blue_rounding_shift;
- return qRgb(tr,tg,tb);
- }
- inline void qt_conv16ToRgb(ushort c, int& r, int& g, int& b)
- {
- const int tr=(c & qt_red_mask);
- const int tg=(c & qt_green_mask);
- const int tb=(c & qt_blue_mask);
- r = tr >> qt_red_shift | tr >> qt_red_rounding_shift;
- g = tg >> qt_green_shift | tg >> qt_green_rounding_shift;
- b = tb << qt_neg_blue_shift | tb >> qt_blue_rounding_shift;
- }
- const int SourceSolid=0;
- const int SourcePixmap=1;
- #ifndef QT_NO_QWS_CURSOR
- class QScreenCursor;
- extern QScreenCursor *qt_screencursor;
- extern bool qt_sw_cursor;
- class Q_GUI_EXPORT QScreenCursor
- {
- public:
- QScreenCursor();
- virtual ~QScreenCursor();
- virtual void set(const QImage &image, int hotx, int hoty);
- virtual void move(int x, int y);
- virtual void show();
- virtual void hide();
- bool supportsAlphaCursor() const { return supportsAlpha; }
- static bool enabled() { return qt_sw_cursor; }
- QRect boundingRect() const { return QRect(pos - hotspot, size); }
- QImage image() const { return cursor; }
- bool isVisible() const { return enable; }
- bool isAccelerated() const { return hwaccel; }
- static void initSoftwareCursor();
- static QScreenCursor* instance() { return qt_screencursor; }
- protected:
- QImage cursor;
- QSize size;
- QPoint pos;
- QPoint hotspot;
- uint enable : 1;
- uint hwaccel : 1;
- uint supportsAlpha : 1;
- private:
- friend class QProxyScreenCursor;
- };
- #endif // QT_NO_QWS_CURSOR
- struct fb_cmap;
- // A (used) chunk of offscreen memory
- class QPoolEntry
- {
- public:
- unsigned int start;
- unsigned int end;
- int clientId;
- };
- class QScreen;
- class QScreenPrivate;
- class QPixmapDataFactory;
- extern QScreen *qt_screen;
- typedef void(*ClearCacheFunc)(QScreen *obj, int);
- class Q_GUI_EXPORT QScreen {
- public:
- enum ClassId { LinuxFBClass, TransformedClass, VNCClass, MultiClass,
- VFbClass, DirectFBClass, SvgalibClass, ProxyClass,
- GLClass, CustomClass = 1024 };
- QScreen(int display_id, ClassId classId);
- explicit QScreen(int display_id);
- virtual ~QScreen();
- static QScreen* instance() { return qt_screen; }
- virtual bool initDevice() = 0;
- virtual bool connect(const QString &displaySpec) = 0;
- virtual void disconnect() = 0;
- virtual void shutdownDevice();
- virtual void setMode(int,int,int) = 0;
- virtual bool supportsDepth(int) const;
- virtual void save();
- virtual void restore();
- virtual void blank(bool on);
- virtual int pixmapOffsetAlignment() { return 64; }
- virtual int pixmapLinestepAlignment() { return 64; }
- virtual int sharedRamSize(void *) { return 0; }
- virtual bool onCard(const unsigned char *) const;
- virtual bool onCard(const unsigned char *, ulong& out_offset) const;
- enum PixelType { NormalPixel, BGRPixel };
- // sets a single color in the colormap
- virtual void set(unsigned int,unsigned int,unsigned int,unsigned int);
- // allocates a color
- virtual int alloc(unsigned int,unsigned int,unsigned int);
- int width() const { return w; }
- int height() const { return h; }
- int depth() const { return d; }
- virtual int pixmapDepth() const;
- PixelType pixelType() const { return pixeltype; }
- int linestep() const { return lstep; }
- int deviceWidth() const { return dw; }
- int deviceHeight() const { return dh; }
- uchar * base() const { return data; }
- // Ask for memory from card cache with alignment
- virtual uchar * cache(int) { return 0; }
- virtual void uncache(uchar *) {}
- QImage::Format pixelFormat() const;
- int screenSize() const { return size; }
- int totalSize() const { return mapsize; }
- QRgb * clut() { return screenclut; }
- int numCols() { return screencols; }
- virtual QSize mapToDevice(const QSize &) const;
- virtual QSize mapFromDevice(const QSize &) const;
- virtual QPoint mapToDevice(const QPoint &, const QSize &) const;
- virtual QPoint mapFromDevice(const QPoint &, const QSize &) const;
- virtual QRect mapToDevice(const QRect &, const QSize &) const;
- virtual QRect mapFromDevice(const QRect &, const QSize &) const;
- virtual QImage mapToDevice(const QImage &) const;
- virtual QImage mapFromDevice(const QImage &) const;
- virtual QRegion mapToDevice(const QRegion &, const QSize &) const;
- virtual QRegion mapFromDevice(const QRegion &, const QSize &) const;
- virtual int transformOrientation() const;
- virtual bool isTransformed() const;
- virtual bool isInterlaced() const;
- virtual void setDirty(const QRect&);
- virtual int memoryNeeded(const QString&);
- virtual void haltUpdates();
- virtual void resumeUpdates();
- // composition manager methods
- virtual void exposeRegion(QRegion r, int changing);
- // these work directly on the screen
- virtual void blit(const QImage &img, const QPoint &topLeft, const QRegion ®ion);
- virtual void solidFill(const QColor &color, const QRegion ®ion);
- void blit(QWSWindow *bs, const QRegion &clip);
- virtual QWSWindowSurface* createSurface(QWidget *widget) const;
- virtual QWSWindowSurface* createSurface(const QString &key) const;
- virtual QList<QScreen*> subScreens() const { return QList<QScreen*>(); }
- virtual QRegion region() const { return QRect(offset(), QSize(w, h)); }
- int subScreenIndexAt(const QPoint &p) const;
- void setOffset(const QPoint &p);
- QPoint offset() const;
- int physicalWidth() const { return physWidth; } // physical display size in mm
- int physicalHeight() const { return physHeight; } // physical display size in mm
- QPixmapDataFactory* pixmapDataFactory() const;
- #ifdef QT_QWS_CLIENTBLIT
- bool supportsBlitInClients() const;
- void setSupportsBlitInClients(bool);
- #endif
- ClassId classId() const;
- protected:
- void setPixelFormat(QImage::Format format);
- void setPixmapDataFactory(QPixmapDataFactory *factory);
- QRgb screenclut[256];
- int screencols;
- uchar * data;
- // Table of allocated lumps, kept in sorted highest-to-lowest order
- // The table itself is allocated at the bottom of offscreen memory
- // i.e. it's similar to having a stack (the table) and a heap
- // (the allocated blocks). Freed space is implicitly described
- // by the gaps between the allocated lumps (this saves entries and
- // means we don't need to worry about coalescing freed lumps)
- QPoolEntry * entries;
- int * entryp;
- unsigned int * lowest;
- int w;
- int lstep;
- int h;
- int d;
- PixelType pixeltype;
- bool grayscale;
- int dw;
- int dh;
- int size; // Screen size
- int mapsize; // Total mapped memory
- int displayId;
- int physWidth;
- int physHeight;
- friend class QWSServer;
- friend class QWSServerPrivate;
- static ClearCacheFunc clearCacheFunc;
- private:
- void compose(int level, const QRegion &exposed, QRegion &blend,
- QImage **blendbuffer, int changing_level);
- void paintBackground(const QRegion &);
- friend class QWSOnScreenSurface;
- static bool isWidgetPaintOnScreen(const QWidget *w);
- #if Q_BYTE_ORDER == Q_BIG_ENDIAN
- void setFrameBufferLittleEndian(bool littleEndian);
- bool frameBufferLittleEndian() const;
- friend class QVNCScreen;
- friend class QLinuxFbScreen;
- friend class QProxyScreen;
- #endif
- friend void qt_solidFill_setup(QScreen*, const QColor&, const QRegion&);
- friend void qt_blit_setup(QScreen *screen, const QImage &image,
- const QPoint &topLeft, const QRegion ®ion);
- #ifdef QT_QWS_DEPTH_GENERIC
- friend void qt_set_generic_blit(QScreen *screen, int bpp,
- int len_red, int len_green, int len_blue,
- int len_alpha, int off_red, int off_green,
- int off_blue, int off_alpha);
- #endif
- QScreenPrivate *d_ptr;
- };
- // This lives in loadable modules
- #ifndef QT_LOADABLE_MODULES
- extern "C" QScreen * qt_get_screen(int display_id, const char* spec);
- #endif
- // This is in main lib, loads the right module, calls qt_get_screen
- // In non-loadable cases just aliases to qt_get_screen
- const unsigned char * qt_probe_bus();
- QT_END_NAMESPACE
- QT_END_HEADER
- #endif // QSCREEN_QWS_H