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//=============================================================================
// Awl
// Audio Widget Library
// $Id:$
//
// Copyright (C) 1999-2011 by Werner Schweer and others
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License
// as published by the Free Software Foundation; version 2 of
// the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//=============================================================================
#include "drawbar.h"
#include <QPainter>
namespace Awl {
//---------------------------------------------------------
// Drawbar
//---------------------------------------------------------
Drawbar::Drawbar(QWidget* parent)
: Slider(parent)
{
_sliderColor = Qt::darkGray;
setOrientation(Qt::Vertical);
setInvertedAppearance(true);
setRange(0.0, 8.0);
setLineStep(1.0);
setPageStep(1.0);
setInteger(true);
}
Drawbar::~Drawbar()
{
}
//---------------------------------------------------------
// setSliderColor
//---------------------------------------------------------
void Drawbar::setSliderColor(const QColor& c)
{
if (c != _sliderColor) {
_sliderColor = c;
update();
}
}
//---------------------------------------------------------
// paint
//---------------------------------------------------------
void Drawbar::paintEvent(QPaintEvent*)
{
int h = height();
int w = width();
int kh = w * 2; // knob height
int kw = w;
int pixel = h - kh;
int ppos = int(pixel * value() / 8.0);
QPainter p(this);
QColor sc(Qt::darkGray);
QColor svc(Qt::gray);
p.setBrush(svc);
//---------------------------------------------------
// draw scale
//---------------------------------------------------
int sx = (w + 9) / 10;
int sw = w - 2 * sx;
p.fillRect(sx, 0, sw, ppos, sc);
QPen pen(Qt::white);
int lw = 2;
pen.setWidth(lw);
p.setPen(pen);
int sx1 = sx + lw/2;
p.drawLine(sx1, 0, sx1, ppos);
int sx2 = sx + sw - lw/2;
p.drawLine(sx2, 0, sx2, ppos);
//---------------------------------------------------
// draw numbers
//---------------------------------------------------
p.save();
p.setClipRect(QRect(sx, 0, sw, ppos));
QFont f = p.font();
f.setPixelSize(8);
int ch = pixel / 8;
QString num("%1");
for (int i = 0; i < 8; ++i) {
p.drawText(0, i * pixel / 8 - (pixel - ppos), w, ch, Qt::AlignCenter, num.arg(8-i));
}
p.restore();
//---------------------------------------------------
// draw slider
//---------------------------------------------------
p.fillRect(0, ppos, kw, kh, _sliderColor);
pen.setWidth(1);
pen.setColor(Qt::black);
p.setPen(pen);
int y1 = ppos + kh / 5 * 2;
int y2 = ppos + kh / 5 * 3;
p.drawLine(0, y1, kw, y1);
p.drawLine(0, y2, kw, y2);
}
}
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