/**************************************************************************** | |
** | |
** 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. | |
** | |
** $QT_BEGIN_LICENSE:LGPL$ | |
** GNU Lesser General Public License Usage | |
** 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. | |
** | |
** 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: | |
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** | |
** Other Usage | |
** Alternatively, this file may be used in accordance with the terms and | |
** conditions contained in a signed written agreement between you and Nokia. | |
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** $QT_END_LICENSE$ | |
** | |
****************************************************************************/ | |
#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 ®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 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 |