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Diffstat (limited to 'src/plugins/platforms/xcb/nativepainting/qtessellator_p.h')
-rw-r--r-- | src/plugins/platforms/xcb/nativepainting/qtessellator_p.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/nativepainting/qtessellator_p.h b/src/plugins/platforms/xcb/nativepainting/qtessellator_p.h new file mode 100644 index 0000000000..65ae6bdc41 --- /dev/null +++ b/src/plugins/platforms/xcb/nativepainting/qtessellator_p.h @@ -0,0 +1,83 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 The Qt Company. For licensing terms +** and conditions see http://www.qt.io/terms-conditions. For further +** information use the contact form at http://www.qt.io/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 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QTESSELATOR_P_H +#define QTESSELATOR_P_H + +#include <QPoint> +#include <QRect> + +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 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 |