khtml/misc/borderarcstroker.h

   1 /*
   2  * Copyright (C) 2008-2009 Fredrik Höglund <fredrik@kde.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public License
  15  * along with this library; see the file COPYING.LIB.  If not, write to
  16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifndef BORDERARCSTROKER_H
  21 #define BORDERARCSTROKER_H
  22
  23 #include <QPainterPath>
  24 #include <QRect>
  25
  26 namespace khtml {
  27
  28 class BorderArcStroker
  29 {
  30 public:
  31     BorderArcStroker();
  32     ~BorderArcStroker();
  33
  34     void setArc(const QRectF &r, qreal startAngle, qreal _sweepLength) { rect = r; angle = startAngle; sweepLength = _sweepLength; }
  35     void setPenWidth(qreal leftRight, qreal topBottom) { hlw = leftRight; vlw = topBottom; }
  36     void setDashPattern(qreal dashLength, qreal spaceLength) { pattern[0] = dashLength; pattern[1] = spaceLength; }
  37     void setDashOffset(qreal offset) { patternOffset = offset; }
  38
  39     QPainterPath createStroke(qreal *nextOffset = 0) const;
  40
  41 private:
  42     QRectF rect;
  43     qreal angle;
  44     qreal hlw;
  45     qreal vlw;
  46     qreal sweepLength;
  47     qreal patternOffset;
  48     qreal pattern[2];
  49 };
  50
  51 } // namespace khtml
  52
  53 #endif