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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12

1 files changed, 461 insertions, 0 deletions

diff --git a/src/gui/painting/qpaintbuffer_p.h b/src/gui/painting/qpaintbuffer_p.h
new file mode 100644
index 0000000000..6272dd912d
--- /dev/null
+++ b/src/gui/painting/qpaintbuffer_p.h
@@ -0,0 +1,461 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QPAINTBUFFER_P_H
+#define QPAINTBUFFER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <qpaintdevice.h>
+
+#include <private/qpaintengineex_p.h>
+#include <private/qtextengine_p.h>
+#include <QDebug>
+
+QT_BEGIN_NAMESPACE
+
+class QPaintBufferPrivate;
+class QPaintBufferPlayback;
+
+class Q_GUI_EXPORT QPaintBuffer : public QPaintDevice
+{
+    Q_DECLARE_PRIVATE(QPaintBuffer)
+public:
+    QPaintBuffer();
+    QPaintBuffer(const QPaintBuffer &other);
+    ~QPaintBuffer();
+
+    bool isEmpty() const;
+
+    void beginNewFrame();
+    int numFrames() const;
+
+    void draw(QPainter *painter, int frame = 0) const;
+
+    int frameStartIndex(int frame) const;
+    int frameEndIndex(int frame) const;
+    int processCommands(QPainter *painter, int begin, int end) const;
+#ifndef QT_NO_DEBUG_STREAM
+    QString commandDescription(int command) const;
+#endif
+
+    void setBoundingRect(const QRectF &rect);
+    QRectF boundingRect() const;
+
+    virtual QPaintEngine *paintEngine() const;
+    virtual int metric(PaintDeviceMetric m) const;
+    virtual int devType() const;
+
+    QPaintBuffer &operator=(const QPaintBuffer &other);
+
+private:
+    friend class QPainterReplayer;
+    friend class QOpenGLReplayer;
+
+    friend Q_GUI_EXPORT QDataStream &operator<<(QDataStream &stream, const QPaintBuffer &buffer);
+    friend Q_GUI_EXPORT QDataStream &operator>>(QDataStream &stream, QPaintBuffer &buffer);
+
+    QPaintBufferPrivate *d_ptr;
+};
+
+Q_GUI_EXPORT QDataStream &operator<<(QDataStream &stream, const QPaintBuffer &buffer);
+Q_GUI_EXPORT QDataStream &operator>>(QDataStream &stream, QPaintBuffer &buffer);
+
+class QPaintBufferEngine;
+
+class QTextItemIntCopy
+{
+public:
+    QTextItemIntCopy(const QTextItem &item);
+    ~QTextItemIntCopy();
+    QTextItemInt &operator () () {return m_item;}
+private:
+    QTextItemInt m_item;
+    QFont m_font;
+};
+
+struct QPaintBufferCommand
+{
+    uint id : 8;
+    uint size : 24;
+
+    int offset;
+    int offset2;
+    int extra;
+};
+
+QDataStream &operator<<(QDataStream &stream, const QPaintBufferCommand &command);
+QDataStream &operator>>(QDataStream &stream, QPaintBufferCommand &command);
+
+Q_DECLARE_TYPEINFO(QPaintBufferCommand, Q_MOVABLE_TYPE);
+
+class QPaintBufferPrivate
+{
+public:
+    enum Command {
+        Cmd_Save,
+        Cmd_Restore,
+
+        Cmd_SetBrush,
+        Cmd_SetBrushOrigin,
+        Cmd_SetClipEnabled,
+        Cmd_SetCompositionMode,
+        Cmd_SetOpacity,
+        Cmd_SetPen,
+        Cmd_SetRenderHints,
+        Cmd_SetTransform,
+        Cmd_SetBackgroundMode,
+
+        Cmd_ClipPath,
+        Cmd_ClipRect,
+        Cmd_ClipRegion,
+        Cmd_ClipVectorPath,
+
+        Cmd_DrawVectorPath,
+        Cmd_FillVectorPath,
+        Cmd_StrokeVectorPath,
+
+        Cmd_DrawConvexPolygonF,
+        Cmd_DrawConvexPolygonI,
+        Cmd_DrawEllipseF,
+        Cmd_DrawEllipseI,
+        Cmd_DrawLineF,
+        Cmd_DrawLineI,
+        Cmd_DrawPath,
+        Cmd_DrawPointsF,
+        Cmd_DrawPointsI,
+        Cmd_DrawPolygonF,
+        Cmd_DrawPolygonI,
+        Cmd_DrawPolylineF,
+        Cmd_DrawPolylineI,
+        Cmd_DrawRectF,
+        Cmd_DrawRectI,
+
+        Cmd_FillRectBrush,
+        Cmd_FillRectColor,
+
+        Cmd_DrawText,
+        Cmd_DrawTextItem,
+
+        Cmd_DrawImagePos,
+        Cmd_DrawImageRect,
+        Cmd_DrawPixmapPos,
+        Cmd_DrawPixmapRect,
+        Cmd_DrawTiledPixmap,
+
+        Cmd_SystemStateChanged,
+        Cmd_Translate,
+        Cmd_DrawStaticText,
+
+        // new commands must be added above this line
+
+        Cmd_LastCommand
+    };
+
+    QPaintBufferPrivate();
+    ~QPaintBufferPrivate();
+
+    int addData(const int *data, int count) {
+        if (count <= 0)
+            return 0;
+        int pos = ints.size();
+        ints.resize(pos + count);
+        memcpy(ints.data() + pos, data, count * sizeof(int));
+        return pos;
+    }
+
+    int addData(const qreal *data, int count) {
+        if (count <= 0)
+            return 0;
+        int pos = floats.size();
+        floats.resize(pos + count);
+        memcpy(floats.data() + pos, data, count * sizeof(qreal));
+        return pos;
+    }
+
+    int addData(const QVariant &var) {
+        variants << var;
+        return variants.size() - 1;
+    }
+
+    QPaintBufferCommand *addCommand(Command command) {
+        QPaintBufferCommand cmd;
+        cmd.id = command;
+        cmd.size = cmd.offset = cmd.offset2 = cmd.extra = 0;
+        commands << cmd;
+        return &commands.last();
+    }
+
+    QPaintBufferCommand *addCommand(Command command, const QVariant &var) {
+        QPaintBufferCommand cmd;
+        cmd.id = command;
+        cmd.offset = addData(var);
+        cmd.size = cmd.offset2 = cmd.extra = 0;
+        commands << cmd;
+        return &commands.last();
+    }
+
+    QPaintBufferCommand *addCommand(Command command, const QVectorPath &path) {
+        QPaintBufferCommand cmd;
+        cmd.id = command;
+        cmd.offset = addData(path.points(), path.elementCount() * 2);
+        cmd.offset2 = ints.size();
+        ints << path.hints();
+        // The absence of path elements is indicated by setting the highest bit in 'cmd.offset2'.
+        if (path.elements())
+            addData((const int *) path.elements(), path.elementCount());
+        else
+            cmd.offset2 |= 0x80000000;
+        cmd.size = path.elementCount();
+        cmd.extra = 0;
+        commands << cmd;
+        return &commands.last();
+    }
+
+    QPaintBufferCommand *addCommand(Command command , const qreal *pts, int arrayLength, int elementCount) {
+        QPaintBufferCommand cmd;
+        cmd.id = command;
+        cmd.offset = addData(pts, arrayLength);
+        cmd.size = elementCount;
+        cmd.offset2 = cmd.extra = 0;
+        commands << cmd;
+        return &commands.last();
+    }
+
+    QPaintBufferCommand *addCommand(Command command , const int *pts, int arrayLength, int elementCount) {
+        QPaintBufferCommand cmd;
+        cmd.id = command;
+        cmd.offset = addData(pts, arrayLength);
+        cmd.size = elementCount;
+        cmd.offset2 = cmd.extra = 0;
+        commands << cmd;
+        return &commands.last();
+    }
+
+    inline void updateBoundingRect(const QRectF &rect);
+
+    QAtomicInt ref;
+
+    QVector<int> ints;
+    QVector<qreal> floats;
+    QVector<QVariant> variants;
+
+    QVector<QPaintBufferCommand> commands;
+    QList<int> frames;
+
+    QPaintBufferEngine *engine;
+    QRectF boundingRect;
+    qreal penWidthAdjustment;
+    uint calculateBoundingRect : 1;
+
+    void *cache;
+};
+
+
+struct QVectorPathCmd
+{
+    // The absence of path elements is indicated by setting the highest bit in 'cmd.offset2'.
+    QVectorPathCmd(QPaintBufferPrivate *d, const QPaintBufferCommand &cmd)
+        : vectorPath(d->floats.constData() + cmd.offset,
+                     cmd.size,
+                     cmd.offset2 & 0x80000000
+                     ? 0
+                     : (const QPainterPath::ElementType *) (d->ints.constData() + cmd.offset2 + 1),
+                     *(d->ints.constData() + (cmd.offset2 & 0x7fffffff))) {}
+
+    inline const QVectorPath &operator()() const { return vectorPath; }
+
+    QVectorPath vectorPath;
+};
+
+
+class Q_GUI_EXPORT QPainterReplayer
+{
+public:
+    QPainterReplayer() { }
+
+    virtual ~QPainterReplayer() { }
+
+    void setupTransform(QPainter *painter);
+    virtual void process(const QPaintBufferCommand &cmd);
+    void processCommands(const QPaintBuffer &buffer, QPainter *painter, int begin, int end);
+
+protected:
+    QPaintBufferPrivate *d;
+    QTransform m_world_matrix;
+
+    QPainter *painter;
+};
+
+class Q_GUI_EXPORT QPaintEngineExReplayer : public QPainterReplayer
+{
+public:
+    QPaintEngineExReplayer() { }
+
+    virtual void process(const QPaintBufferCommand &cmd);
+};
+
+class QPaintBufferEnginePrivate;
+
+class QPaintBufferEngine : public QPaintEngineEx
+{
+    Q_DECLARE_PRIVATE(QPaintBufferEngine)
+public:
+    QPaintBufferEngine(QPaintBufferPrivate *buffer);
+
+    virtual bool begin(QPaintDevice *device);
+    virtual bool end();
+
+    virtual Type type() const { return QPaintEngine::PaintBuffer; }
+
+    virtual QPainterState *createState(QPainterState *orig) const;
+
+    virtual void draw(const QVectorPath &path);
+    virtual void fill(const QVectorPath &path, const QBrush &brush);
+    virtual void stroke(const QVectorPath &path, const QPen &pen);
+
+    virtual void clip(const QVectorPath &path, Qt::ClipOperation op);
+    virtual void clip(const QRect &rect, Qt::ClipOperation op);
+    virtual void clip(const QRegion &region, Qt::ClipOperation op);
+    virtual void clip(const QPainterPath &path, Qt::ClipOperation op);
+
+    virtual void clipEnabledChanged();
+    virtual void penChanged();
+    virtual void brushChanged();
+    virtual void brushOriginChanged();
+    virtual void opacityChanged();
+    virtual void compositionModeChanged();
+    virtual void renderHintsChanged();
+    virtual void transformChanged();
+    virtual void backgroundModeChanged();
+
+    virtual void fillRect(const QRectF &rect, const QBrush &brush);
+    virtual void fillRect(const QRectF &rect, const QColor &color);
+
+    virtual void drawRects(const QRect *rects, int rectCount);
+    virtual void drawRects(const QRectF *rects, int rectCount);
+
+    virtual void drawLines(const QLine *lines, int lineCount);
+    virtual void drawLines(const QLineF *lines, int lineCount);
+
+    virtual void drawEllipse(const QRectF &r);
+    virtual void drawEllipse(const QRect &r);
+
+    virtual void drawPath(const QPainterPath &path);
+
+    virtual void drawPoints(const QPointF *points, int pointCount);
+    virtual void drawPoints(const QPoint *points, int pointCount);
+
+    virtual void drawPolygon(const QPointF *points, int pointCount, PolygonDrawMode mode);
+    virtual void drawPolygon(const QPoint *points, int pointCount, PolygonDrawMode mode);
+
+    virtual void drawPixmap(const QRectF &r, const QPixmap &pm, const QRectF &sr);
+    virtual void drawPixmap(const QPointF &pos, const QPixmap &pm);
+
+    virtual void drawImage(const QRectF &r, const QImage &pm, const QRectF &sr,
+                           Qt::ImageConversionFlags flags = Qt::AutoColor);
+    virtual void drawImage(const QPointF &pos, const QImage &image);
+
+    virtual void drawTiledPixmap(const QRectF &r, const QPixmap &pixmap, const QPointF &s);
+
+    virtual void drawTextItem(const QPointF &pos, const QTextItem &ti);
+    virtual void drawStaticTextItem(QStaticTextItem *staticTextItem);
+
+    virtual void setState(QPainterState *s);
+    virtual uint flags() const {return QPaintEngineEx::DoNotEmulate;}
+
+    QPaintBufferPrivate *buffer;
+
+    mutable int m_begin_detected : 1;
+    mutable int m_save_detected : 1;
+    mutable int m_stream_raw_text_items : 1;
+    mutable int m_unused : 29;
+
+    mutable QPainterState *m_created_state;
+};
+
+class Q_GUI_EXPORT QPaintBufferSignalProxy : public QObject
+{
+    Q_OBJECT
+public:
+    QPaintBufferSignalProxy() : QObject() {}
+    void emitAboutToDestroy(const QPaintBufferPrivate *buffer) {
+        emit aboutToDestroy(buffer);
+    }
+    static QPaintBufferSignalProxy *instance();
+Q_SIGNALS:
+    void aboutToDestroy(const QPaintBufferPrivate *buffer);
+};
+
+// One resource per paint buffer and vice versa.
+class Q_GUI_EXPORT QPaintBufferResource : public QObject
+{
+    Q_OBJECT
+public:
+    typedef void (*FreeFunc)(void *);
+
+    QPaintBufferResource(FreeFunc f, QObject *parent = 0);
+    ~QPaintBufferResource();
+    // Set resource 'value' for 'key'.
+    void insert(const QPaintBufferPrivate *key, void *value);
+    // Return resource for 'key'.
+    void *value(const QPaintBufferPrivate *key);
+public slots:
+    // Remove entry 'key' from cache and delete resource.
+    void remove(const QPaintBufferPrivate *key);
+private:
+    typedef QHash<const QPaintBufferPrivate *, void *> Cache;
+    Cache m_cache;
+    FreeFunc free;
+};
+
+QT_END_NAMESPACE
+
+#endif // QPAINTBUFFER_P_H