source: trunk/src/gui/painting/qpaintengine.h@ 113

/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information ([email protected])
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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 [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QPAINTENGINE_H
#define QPAINTENGINE_H

#include <QtCore/qnamespace.h>
#include <QtCore/qobjectdefs.h>
#include <QtGui/qpainter.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

class QFontEngine;
class QLineF;
class QPaintDevice;
class QPaintEnginePrivate;
class QPainterPath;
class QPointF;
class QPolygonF;
class QRectF;
struct QGlyphLayout;
class QTextItemInt;
class QPaintEngineState;

class Q_GUI_EXPORT QTextItem {
public:
    enum RenderFlag {
        RightToLeft = 0x1,
        Overline = 0x10,
        Underline = 0x20,
        StrikeOut = 0x40,

        Dummy = 0xffffffff
    };
    Q_DECLARE_FLAGS(RenderFlags, RenderFlag)
    qreal descent() const;
    qreal ascent() const;
    qreal width() const;

    RenderFlags renderFlags() const;
    QString text() const;
    QFont font() const;
};
Q_DECLARE_TYPEINFO(QTextItem, Q_PRIMITIVE_TYPE);


class Q_GUI_EXPORT QPaintEngine
{
    Q_DECLARE_PRIVATE(QPaintEngine)
public:
    enum PaintEngineFeature {
        PrimitiveTransform          = 0x00000001, // Can transform primitives brushes
        PatternTransform            = 0x00000002, // Can transform pattern brushes
        PixmapTransform             = 0x00000004, // Can transform pixmaps
        PatternBrush                = 0x00000008, // Can fill with pixmaps and standard patterns
        LinearGradientFill          = 0x00000010, // Can fill gradient areas
        RadialGradientFill          = 0x00000020, // Can render radial gradients
        ConicalGradientFill         = 0x00000040, // Can render conical gradients
        AlphaBlend                  = 0x00000080, // Can do source over alpha blend
        PorterDuff                  = 0x00000100, // Can do general porter duff compositions
        PainterPaths                = 0x00000200, // Can fill, outline and clip paths
        Antialiasing                = 0x00000400, // Can antialias lines
        BrushStroke                 = 0x00000800, // Can render brush based pens
        ConstantOpacity             = 0x00001000, // Can render at constant opacity
        MaskedBrush                 = 0x00002000, // Can fill with textures that has an alpha channel or mask
        PerspectiveTransform        = 0x00004000, // Can do perspective transformations
        BlendModes                  = 0x00008000, // Can do extended Porter&Duff composition