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/* abGate Knob Style
*
* Copyright 2012 Antanas Bružas
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "abgatestyle.h"
#include <QStyleOptionSlider>
#include <QtGui>
#include <cmath>
#include <iostream>
inline int valueAngle(const QStyleOptionSlider *dial) {
return -((dial->sliderValue - dial->minimum) * 300 * 16) /
(dial->maximum - dial->minimum);
}
inline void paintArc(QPainter *p, const QStyleOptionSlider *dial) {
QColor color_0f0f0f(15, 15, 15);
QColor color_b10a0a(170, 10, 10);
QColor arcColor =
(dial->state & QStyle::State_Enabled) ? color_0f0f0f : color_b10a0a;
QLinearGradient linGrad(80, 100, 140, 140);
linGrad.setColorAt(0, arcColor.darker(140));
linGrad.setColorAt(1, arcColor.lighter().lighter());
linGrad.setSpread(QGradient::PadSpread);
p->setBrush(linGrad);
p->setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
QRectF rectangle(1, 1, 198, 198);
int spanAngle = valueAngle(dial);
int startAngle = 240 * 16;
p->drawPie(rectangle, startAngle, spanAngle);
}
inline void paintDial(QPainter *painter) {
// Metal color
QColor color_d0d2c2(208, 210, 194);
// Color for cirles
QColor transparent_black(0, 0, 0, 15);
// Color #1 for plastic bg gradient
QColor color_1b1b1b(27, 27, 27);
// Color #2 for plastic bg gradient
QColor color_63635c(70, 70, 65);
painter->setPen(Qt::NoPen);
// Shadow for plastic
QRadialGradient radGrad1(100, 100, 100, 100, 100);
// radGrad1.setColorAt(0, Qt::black);
radGrad1.setColorAt(0.8, Qt::black);
radGrad1.setColorAt(1, Qt::transparent);
painter->setBrush(radGrad1);
painter->drawEllipse(1, 1, 198, 198);
// Black plastic gradient background
QConicalGradient coneGradient1(100, 100, 135.0);
coneGradient1.setColorAt(0.0, color_1b1b1b);
coneGradient1.setColorAt(0.17, color_63635c);
coneGradient1.setColorAt(0.34, color_1b1b1b);
coneGradient1.setColorAt(0.51, color_63635c);
coneGradient1.setColorAt(0.68, color_1b1b1b);
coneGradient1.setColorAt(0.85, color_63635c);
coneGradient1.setColorAt(1.0, color_1b1b1b);
painter->setBrush(coneGradient1);
// Drawing plastic gradiented ellipse
painter->drawEllipse(5, 5, 190, 190);
// Shadow for metal
QRadialGradient radGrad2(100, 100, 60, 100, 100);
radGrad2.setColorAt(0, Qt::black);
radGrad2.setColorAt(1, Qt::transparent);
painter->setBrush(radGrad2);
painter->drawEllipse(40, 40, 120, 120);
// First metal gradient background
QConicalGradient coneGradient2(100, 100, 90.0);
coneGradient2.setColorAt(0.0, color_d0d2c2);
coneGradient2.setColorAt(0.17, Qt::white);
coneGradient2.setColorAt(0.34, color_d0d2c2);
coneGradient2.setColorAt(0.51, Qt::white);
coneGradient2.setColorAt(0.68, color_d0d2c2);
coneGradient2.setColorAt(0.85, Qt::white);
coneGradient2.setColorAt(1.0, color_d0d2c2);
painter->setBrush(coneGradient2);
// Drawing first metal gradiented ellipse
painter->drawEllipse(45, 45, 110, 110);
painter->setBrush(Qt::NoBrush);
painter->setPen(
QPen(transparent_black, 1, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
// Drawing small circle
painter->drawEllipse(50, 50, 100, 100);
// Second Metal gradient background
QConicalGradient coneGradient3(100, 100, 135.0);
coneGradient3.setColorAt(0.0, color_d0d2c2);
coneGradient3.setColorAt(0.17, Qt::white);
coneGradient3.setColorAt(0.34, color_d0d2c2);
coneGradient3.setColorAt(0.51, Qt::white);
coneGradient3.setColorAt(0.68, color_d0d2c2);
coneGradient3.setColorAt(0.85, Qt::white);
coneGradient3.setColorAt(1.0, color_d0d2c2);
painter->setBrush(coneGradient3);
// Drawing second metal gradiented ellipse
painter->drawEllipse(53, 53, 94, 94);
}
inline void paintDot(QPainter *painter, const QStyleOptionSlider *dial) {
int startPoint = (240 * 16) + valueAngle(dial);
QColor color_0f0f0f(15, 15, 15, 150);
QColor color_b10a0a(170, 10, 10, 224);
QPalette pal = dial->palette;
QPen dotPen((dial->state & QStyle::State_Enabled) ? color_b10a0a
: pal.mid().color(),
9, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin);
QRect rectangle1(63, 63, 74, 74);
painter->setPen(dotPen);
painter->drawArc(rectangle1, startPoint, 5);
painter->setPen(
QPen(Qt::transparent, 0, Qt::SolidLine, Qt::FlatCap, Qt::RoundJoin));
// Red pointer gradient
QRadialGradient radGrad1(100, 100, 104, 100, 100);
radGrad1.setColorAt(0.0, Qt::transparent);
radGrad1.setColorAt(0.69, Qt::transparent);
radGrad1.setColorAt(0.7, color_b10a0a);
radGrad1.setColorAt(1.0, color_b10a0a);
painter->setBrush(radGrad1);
painter->drawPie(5, 5, 190, 190, startPoint - 30, 60);
// Dark pointer gradient
QRadialGradient radGrad2(100, 100, 104, 100, 100);
radGrad2.setColorAt(0.0, Qt::transparent);
radGrad2.setColorAt(0.69, Qt::transparent);
radGrad2.setColorAt(0.7, color_0f0f0f);
radGrad2.setColorAt(1.0, color_0f0f0f);
painter->setBrush(radGrad2);
for (int i = 1; i < 16; ++i) {
painter->drawPie(6, 6, 188, 188, startPoint - 30 - 16 * 22.5 * i, 60);
}
/*painter->translate(100, 100);
for (int j = 0; j < 16; ++j) {
// if ((j % 5) != 0)
painter->drawLine(74, 0, 93, 0);
painter->rotate(22.5 + valueAngle(dial));
}*/
}
inline void paintScale(QPainter *painter, const QStyleOptionSlider *dial) {
if (dial->subControls & QStyle::SC_DialTickmarks) {
QRect rectangle2(5, 5, 190, 190);
int ns = dial->tickInterval;
int dot = -1 + (dial->maximum + ns - dial->minimum) / ns; // int dot = 25;
double delta = 300.0 * 16.0 / dot;
painter->setPen(
QPen(Qt::black, 5, Qt::SolidLine, Qt::RoundCap, Qt::RoundJoin));
for (int i = 0; i <= dot; i++) {
painter->drawArc(rectangle2, int(240 * 16 - delta * i), 5);
}
}
}
void abGateStyle::drawComplexControl(ComplexControl cc,
const QStyleOptionComplex *opt,
QPainter *p, const QWidget *widget) const {
if (cc != QStyle::CC_Dial) {
QCommonStyle::drawComplexControl(cc, opt, p, widget);
return;
}
const QStyleOptionSlider *dial =
qstyleoption_cast<const QStyleOptionSlider *>(opt);
if (dial == NULL) {
return;
}
p->save();
int size = dial->rect.width() < dial->rect.height() ? dial->rect.width()
: dial->rect.height();
p->setViewport((dial->rect.width() - size) / 2,
(dial->rect.height() - size) / 2, size, size);
p->setWindow(0, 0, 200, 200);
p->setRenderHint(QPainter::Antialiasing);
// paintArc(p, dial);
paintScale(p, dial);
paintDial(p);
paintDot(p, dial);
// done
p->restore();
}
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