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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPAINTER_P_H
#define QPAINTER_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 "QtGui/qbrush.h"
#include "QtGui/qfont.h"
#include "QtGui/qpen.h"
#include "QtGui/qregion.h"
#include "QtGui/qmatrix.h"
#include "QtGui/qpainter.h"
#include "QtGui/qpainterpath.h"
#include "QtGui/qpaintengine.h"
#include <QtCore/qhash.h>
#include <private/qpen_p.h>
QT_BEGIN_NAMESPACE
class QPaintEngine;
class QEmulationPaintEngine;
class QPaintEngineEx;
struct QFixedPoint;
struct QTLWExtra;
struct DataPtrContainer {
void *ptr;
};
inline void *data_ptr(const QTransform &t) { return (DataPtrContainer *) &t; }
inline bool qtransform_fast_equals(const QTransform &a, const QTransform &b) { return data_ptr(a) == data_ptr(b); }
// QPen inline functions...
inline QPen::DataPtr &data_ptr(const QPen &p) { return const_cast<QPen &>(p).data_ptr(); }
inline bool qpen_fast_equals(const QPen &a, const QPen &b) { return data_ptr(a) == data_ptr(b); }
inline QBrush qpen_brush(const QPen &p) { return data_ptr(p)->brush; }
inline qreal qpen_widthf(const QPen &p) { return data_ptr(p)->width; }
inline Qt::PenStyle qpen_style(const QPen &p) { return data_ptr(p)->style; }
inline Qt::PenCapStyle qpen_capStyle(const QPen &p) { return data_ptr(p)->capStyle; }
inline Qt::PenJoinStyle qpen_joinStyle(const QPen &p) { return data_ptr(p)->joinStyle; }
// QBrush inline functions...
inline QBrush::DataPtr &data_ptr(const QBrush &p) { return const_cast<QBrush &>(p).data_ptr(); }
inline bool qbrush_fast_equals(const QBrush &a, const QBrush &b) { return data_ptr(a) == data_ptr(b); }
inline Qt::BrushStyle qbrush_style(const QBrush &b) { return data_ptr(b)->style; }
inline const QColor &qbrush_color(const QBrush &b) { return data_ptr(b)->color; }
inline bool qbrush_has_transform(const QBrush &b) { return data_ptr(b)->transform.type() > QTransform::TxNone; }
class QPainterClipInfo
{
public:
enum ClipType { RegionClip, PathClip, RectClip, RectFClip };
QPainterClipInfo(const QPainterPath &p, Qt::ClipOperation op, const QTransform &m) :
clipType(PathClip), matrix(m), operation(op), path(p) { }
QPainterClipInfo(const QRegion &r, Qt::ClipOperation op, const QTransform &m) :
clipType(RegionClip), matrix(m), operation(op), region(r) { }
QPainterClipInfo(const QRect &r, Qt::ClipOperation op, const QTransform &m) :
clipType(RectClip), matrix(m), operation(op), rect(r) { }
QPainterClipInfo(const QRectF &r, Qt::ClipOperation op, const QTransform &m) :
clipType(RectFClip), matrix(m), operation(op), rectf(r) { }
ClipType clipType;
QTransform matrix;
Qt::ClipOperation operation;
QPainterPath path;
QRegion region;
QRect rect;
QRectF rectf;
// ###
// union {
// QRegionData *d;
// QPainterPathPrivate *pathData;
// struct {
// int x, y, w, h;
// } rectData;
// struct {
// qreal x, y, w, h;
// } rectFData;
// };
};
class Q_GUI_EXPORT QPainterState : public QPaintEngineState
{
public:
QPainterState();
QPainterState(const QPainterState *s);
virtual ~QPainterState();
void init(QPainter *p);
QPointF brushOrigin;
QFont font;
QFont deviceFont;
QPen pen;
QBrush brush;
QBrush bgBrush; // background brush
QRegion clipRegion;
QPainterPath clipPath;
Qt::ClipOperation clipOperation;
QPainter::RenderHints renderHints;
QList<QPainterClipInfo> clipInfo; // ### Make me smaller and faster to copy around...
QTransform worldMatrix; // World transformation matrix, not window and viewport
QTransform matrix; // Complete transformation matrix,
QTransform redirectionMatrix;
int wx, wy, ww, wh; // window rectangle
int vx, vy, vw, vh; // viewport rectangle
qreal opacity;
uint WxF:1; // World transformation
uint VxF:1; // View transformation
uint clipEnabled:1;
Qt::BGMode bgMode;
QPainter *painter;
Qt::LayoutDirection layoutDirection;
QPainter::CompositionMode composition_mode;
uint emulationSpecifier;
uint changeFlags;
};
struct QPainterDummyState
{
QFont font;
QPen pen;
QBrush brush;
QTransform transform;
};
class QRawFont;
class QPainterPrivate
{
Q_DECLARE_PUBLIC(QPainter)
public:
QPainterPrivate(QPainter *painter)
: q_ptr(painter), d_ptrs(0), state(0), dummyState(0), txinv(0), inDestructor(false), d_ptrs_size(0),
refcount(1), device(0), original_device(0), helper_device(0), engine(0), emulationEngine(0),
extended(0)
{
}
~QPainterPrivate();
QPainter *q_ptr;
QPainterPrivate **d_ptrs;
QPainterState *state;
QVector<QPainterState*> states;
mutable QPainterDummyState *dummyState;
QTransform invMatrix;
uint txinv:1;
uint inDestructor : 1;
uint d_ptrs_size;
uint refcount;
enum DrawOperation { StrokeDraw = 0x1,
FillDraw = 0x2,
StrokeAndFillDraw = 0x3
};
QPainterDummyState *fakeState() const {
if (!dummyState)
dummyState = new QPainterDummyState();
return dummyState;
}
void updateEmulationSpecifier(QPainterState *s);
void updateStateImpl(QPainterState *state);
void updateState(QPainterState *state);
void draw_helper(const QPainterPath &path, DrawOperation operation = StrokeAndFillDraw);
void drawStretchedGradient(const QPainterPath &path, DrawOperation operation);
void drawOpaqueBackground(const QPainterPath &path, DrawOperation operation);
#if !defined(QT_NO_RAWFONT)
void drawGlyphs(const quint32 *glyphArray, QFixedPoint *positionArray, int glyphCount,
const QRawFont &font, bool overline = false, bool underline = false,
bool strikeOut = false);
#endif
void updateMatrix();
void updateInvMatrix();
int rectSubtraction() const {
return state->pen.style() != Qt::NoPen && state->pen.width() == 0 ? 1 : 0;
}
void checkEmulation();
static QPainterPrivate *get(QPainter *painter)
{
return painter->d_ptr.data();
}
QTransform viewTransform() const;
static bool attachPainterPrivate(QPainter *q, QPaintDevice *pdev);
void detachPainterPrivate(QPainter *q);
QPaintDevice *device;
QPaintDevice *original_device;
QPaintDevice *helper_device;
QPaintEngine *engine;
QEmulationPaintEngine *emulationEngine;
QPaintEngineEx *extended;
QBrush colorBrush; // for fill with solid color
};
Q_GUI_EXPORT void qt_draw_helper(QPainterPrivate *p, const QPainterPath &path, QPainterPrivate::DrawOperation operation);
QString qt_generate_brush_key(const QBrush &brush);
QT_END_NAMESPACE
#endif // QPAINTER_P_H
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