mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
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109 lines
2.8 KiB
C++
109 lines
2.8 KiB
C++
/*
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* Copyright (c) 2006 Sean C. Rhea (srhea@srhea.net)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*/
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#include "LogTimeScaleDraw.h"
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#include <qpen.h>
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#include <qpainter.h>
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#include "qwt_math.h"
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#include "qwt_painter.h"
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#include "qwt_scale_div.h"
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#include "qwt_scale_map.h"
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#include "qwt_scale_draw.h"
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#if QT_VERSION < 0x040000
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#include <qwmatrix.h>
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#define QwtMatrix QWMatrix
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#define QwtPointArray QPointArray
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#else
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#include <qmatrix.h>
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#define QwtMatrix QMatrix
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#define QwtPointArray QPolygon
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#endif
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struct tick_info_t {
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double x;
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char *label;
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};
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extern tick_info_t tick_info[];
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void
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LogTimeScaleDraw::drawLabel(QPainter *painter, double value) const
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{
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QwtText lbl = tickLabel(painter->font(), value);
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if ( lbl.isEmpty() )
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return;
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const QPoint pos = labelPosition(value);
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QSize labelSize = lbl.textSize(painter->font());
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if ( labelSize.height() % 2 )
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labelSize.setHeight(labelSize.height() + 1);
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const QwtMatrix m = labelMatrix( pos, labelSize);
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painter->save();
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#if QT_VERSION < 0x040000
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painter->setWorldMatrix(m, true);
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#else
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painter->setMatrix(m, true);
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#endif
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lbl.draw (painter, QRect(QPoint(0, 0), labelSize) );
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painter->restore();
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}
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const QwtText &
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LogTimeScaleDraw::tickLabel(const QFont &font, double value) const
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{
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QMap<double, QwtText>::const_iterator it = labelCache.find(value);
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if ( it == labelCache.end() )
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{
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QwtText lbl;
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tick_info_t *walker = tick_info;
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while (walker->label) {
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if (walker->x == value)
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break;
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++walker;
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}
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if (walker->label)
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lbl = QwtText(QString(walker->label));
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else
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lbl = label(value);
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lbl.setRenderFlags(0);
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lbl.setLayoutAttribute(QwtText::MinimumLayout);
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(void)lbl.textSize(font); // initialize the internal cache
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it = labelCache.insert(value, lbl);
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}
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return (*it);
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}
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