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Diffstat (limited to 'src/gui/painting/qpaintbuffer_p.h')
| -rw-r--r-- | src/gui/painting/qpaintbuffer_p.h | 439 |
1 files changed, 439 insertions, 0 deletions
diff --git a/src/gui/painting/qpaintbuffer_p.h b/src/gui/painting/qpaintbuffer_p.h new file mode 100644 index 0000000..b360279 --- /dev/null +++ b/src/gui/painting/qpaintbuffer_p.h @@ -0,0 +1,439 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** 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> + +class QPaintBufferPrivate; +class QPaintBufferPlayback; + +class Q_GUI_EXPORT QPaintBuffer : public QPaintDevice +{ +public: + QPaintBuffer(); + QPaintBuffer(const QPaintBuffer &other); + ~QPaintBuffer(); + + bool isEmpty() const; + + void draw(QPainter *painter) const; + 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_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; + + 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); + void process(const QPaintBufferCommand &cmd); + void draw(const QPaintBuffer &buffer, QPainter *painter); + +protected: + QPaintBufferPrivate *d; + QTransform m_world_matrix; + + QPainter *painter; +}; + +class Q_GUI_EXPORT QPaintEngineExReplayer : public QPainterReplayer +{ +public: + QPaintEngineExReplayer() { } + + 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 ®ion, 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 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; +}; + +#endif // QPAINTBUFFER_P_H |