Long live Qt 4.5!

1 files changed, 387 insertions, 0 deletions

diff --git a/src/gui/embedded/qscreen_qws.h b/src/gui/embedded/qscreen_qws.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 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.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, 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.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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 QGraphicsSystem;
+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 Q_GUI_EXPORT 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 &region);
+    virtual void solidFill(const QColor &color, const QRegion &region);
+    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; // Deprecated, will be removed in 4.6
+    QGraphicsSystem* graphicsSystem() 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); // Deprecated, will be removed in 4.6
+    void setGraphicsSystem(QGraphicsSystem* system);
+
+    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 QVFbScreen;
+    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 &region);
+#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