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+/****************************************************************************
+**
+** 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 QCOSMETICSTROKER_P_H
+#define QCOSMETICSTROKER_P_H
+
+#include <private/qdrawhelper_p.h>
+#include <private/qvectorpath_p.h>
+#include <private/qpaintengine_raster_p.h>
+#include <qpen.h>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+QT_MODULE(Gui)
+
+class QCosmeticStroker;
+
+
+typedef void (*StrokeLine)(QCosmeticStroker *stroker, qreal x1, qreal y1, qreal x2, qreal y2, int caps);
+
+class QCosmeticStroker
+{
+public:
+ struct Point {
+ int x;
+ int y;
+ };
+ struct PointF {
+ qreal x;
+ qreal y;
+ };
+
+ enum Caps {
+ NoCaps = 0,
+ CapBegin = 0x1,
+ CapEnd = 0x2,
+ };
+
+ // used to avoid drop outs or duplicated points
+ enum Direction {
+ TopToBottom,
+ BottomToTop,
+ LeftToRight,
+ RightToLeft
+ };
+
+ QCosmeticStroker(QRasterPaintEngineState *s, const QRect &dr)
+ : state(s),
+ clip(dr),
+ pattern(0),
+ reversePattern(0),
+ patternSize(0),
+ patternLength(0),
+ patternOffset(0),
+ current_span(0),
+ lastDir(LeftToRight),
+ lastAxisAligned(false)
+ { setup(); }
+ ~QCosmeticStroker() { free(pattern); free(reversePattern); }
+ void drawLine(const QPointF &p1, const QPointF &p2);
+ void drawPath(const QVectorPath &path);
+ void drawPoints(const QPoint *points, int num);
+ void drawPoints(const QPointF *points, int num);
+
+
+ QRasterPaintEngineState *state;
+ QRect clip;
+ // clip bounds in real
+ qreal xmin, xmax;
+ qreal ymin, ymax;
+
+ StrokeLine stroke;
+ bool drawCaps;
+
+ int *pattern;
+ int *reversePattern;
+ int patternSize;
+ int patternLength;
+ int patternOffset;
+
+ enum { NSPANS = 255 };
+ QT_FT_Span spans[NSPANS];
+ int current_span;
+ ProcessSpans blend;
+
+ int opacity;
+
+ uint color;
+ uint *pixels;
+ int ppl;
+
+ Direction lastDir;
+ Point lastPixel;
+ bool lastAxisAligned;
+
+private:
+ void setup();
+
+ void renderCubic(const QPointF &p1, const QPointF &p2, const QPointF &p3, const QPointF &p4, int caps);
+ void renderCubicSubdivision(PointF *points, int level, int caps);
+ // used for closed subpaths
+ void calculateLastPoint(qreal rx1, qreal ry1, qreal rx2, qreal ry2);
+
+public:
+ bool clipLine(qreal &x1, qreal &y1, qreal &x2, qreal &y2);
+};
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif // QCOSMETICLINE_H