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Diffstat (limited to 'src/gui/painting/qtessellator_p.h')
-rw-r--r-- | src/gui/painting/qtessellator_p.h | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/src/gui/painting/qtessellator_p.h b/src/gui/painting/qtessellator_p.h new file mode 100644 index 0000000000..ad3ef9776f --- /dev/null +++ b/src/gui/painting/qtessellator_p.h @@ -0,0 +1,102 @@ +/**************************************************************************** +** +** 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 QTESSELATOR_P_H +#define QTESSELATOR_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists for the convenience +// of other Qt classes. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <qpoint.h> +#include <qrect.h> + +QT_BEGIN_NAMESPACE + +class QTessellatorPrivate; + +typedef int Q27Dot5; +#define Q27Dot5ToDouble(i) ((i)/32.) +#define FloatToQ27Dot5(i) (int)((i) * 32) +#define IntToQ27Dot5(i) ((i) << 5) +#define Q27Dot5ToXFixed(i) ((i) << 11) +#define Q27Dot5Factor 32 + +class Q_GUI_EXPORT QTessellator { +public: + QTessellator(); + virtual ~QTessellator(); + + QRectF tessellate(const QPointF *points, int nPoints); + void tessellateConvex(const QPointF *points, int nPoints); + void tessellateRect(const QPointF &a, const QPointF &b, qreal width); + + void setWinding(bool w); + + struct Vertex { + Q27Dot5 x; + Q27Dot5 y; + }; + struct Trapezoid { + Q27Dot5 top; + Q27Dot5 bottom; + const Vertex *topLeft; + const Vertex *bottomLeft; + const Vertex *topRight; + const Vertex *bottomRight; + }; + virtual void addTrap(const Trapezoid &trap) = 0; + +private: + friend class QTessellatorPrivate; + QTessellatorPrivate *d; +}; + +QT_END_NAMESPACE + +#endif |