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Diffstat (limited to 'src/gui/styles/qstylehelper.cpp')
| -rw-r--r-- | src/gui/styles/qstylehelper.cpp | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/src/gui/styles/qstylehelper.cpp b/src/gui/styles/qstylehelper.cpp new file mode 100644 index 0000000..79a1075 --- /dev/null +++ b/src/gui/styles/qstylehelper.cpp @@ -0,0 +1,295 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qstylehelper_p.h" + +#include <qstyleoption.h> +#include <qpainter.h> +#include <qpixmapcache.h> +#include <private/qmath_p.h> +#include <private/qstyle_p.h> +#include <qmath.h> + +QT_BEGIN_NAMESPACE + +const bool QStyleHelper::UsePixmapCache = true; + +QString QStyleHelper::uniqueName(const QString &key, const QStyleOption *option, const QSize &size) +{ + QString tmp; + const QStyleOptionComplex *complexOption = qstyleoption_cast<const QStyleOptionComplex *>(option); + tmp.sprintf("%s-%d-%d-%lld-%dx%d-%d", key.toLatin1().constData(), uint(option->state), + complexOption ? uint(complexOption->activeSubControls) : uint(0), + option->palette.cacheKey(), size.width(), size.height(), option->direction); +#ifndef QT_NO_SPINBOX + if (const QStyleOptionSpinBox *spinBox = qstyleoption_cast<const QStyleOptionSpinBox *>(option)) { + tmp.append(QLatin1Char('-')); + tmp.append(QString::number(spinBox->buttonSymbols)); + tmp.append(QLatin1Char('-')); + tmp.append(QString::number(spinBox->stepEnabled)); + tmp.append(QLatin1Char('-')); + tmp.append(QLatin1Char(spinBox->frame ? '1' : '0')); + } +#endif // QT_NO_SPINBOX + return tmp; +} + +#ifndef QT_NO_DIAL + +int QStyleHelper::calcBigLineSize(int radius) +{ + int bigLineSize = radius / 6; + if (bigLineSize < 4) + bigLineSize = 4; + if (bigLineSize > radius / 2) + bigLineSize = radius / 2; + return bigLineSize; +} + +static QPointF calcRadialPos(const QStyleOptionSlider *dial, float offset) +{ + const int width = dial->rect.width(); + const int height = dial->rect.height(); + const int r = qMin(width, height) / 2; + const int currentSliderPosition = dial->upsideDown ? dial->sliderPosition : (dial->maximum - dial->sliderPosition); + float a = 0; + if (dial->maximum == dial->minimum) + a = Q_PI / 2; + else if (dial->dialWrapping) + a = Q_PI * 3 / 2 - (currentSliderPosition - dial->minimum) * 2 * Q_PI + / (dial->maximum - dial->minimum); + else + a = (Q_PI * 8 - (currentSliderPosition - dial->minimum) * 10 * Q_PI + / (dial->maximum - dial->minimum)) / 6; + float xc = width / 2.0; + float yc = height / 2.0; + float len = r - QStyleHelper::calcBigLineSize(r) - 3; + float back = offset * len; + QPointF pos(QPointF(xc + back * qCos(a), yc - back * qSin(a))); + return pos; +} + +qreal QStyleHelper::angle(const QPointF &p1, const QPointF &p2) +{ + static const qreal rad_factor = 180 / Q_PI; + qreal _angle = 0; + + if (p1.x() == p2.x()) { + if (p1.y() < p2.y()) + _angle = 270; + else + _angle = 90; + } else { + qreal x1, x2, y1, y2; + + if (p1.x() <= p2.x()) { + x1 = p1.x(); y1 = p1.y(); + x2 = p2.x(); y2 = p2.y(); + } else { + x2 = p1.x(); y2 = p1.y(); + x1 = p2.x(); y1 = p2.y(); + } + + qreal m = -(y2 - y1) / (x2 - x1); + _angle = atan(m) * rad_factor; + + if (p1.x() < p2.x()) + _angle = 180 - _angle; + else + _angle = -_angle; + } + return _angle; +} + +QPolygonF QStyleHelper::calcLines(const QStyleOptionSlider *dial) +{ + QPolygonF poly; + int width = dial->rect.width(); + int height = dial->rect.height(); + qreal r = qMin(width, height) / 2; + int bigLineSize = calcBigLineSize(int(r)); + + qreal xc = width / 2 + 0.5; + qreal yc = height / 2 + 0.5; + int ns = dial->tickInterval; + int notches = (dial->maximum + ns - 1 - dial->minimum) / ns; + if (notches <= 0) + return poly; + if (dial->maximum < dial->minimum || dial->maximum - dial->minimum > 1000) { + int maximum = dial->minimum + 1000; + notches = (maximum + ns - 1 - dial->minimum) / ns; + } + + poly.resize(2 + 2 * notches); + int smallLineSize = bigLineSize / 2; + for (int i = 0; i <= notches; ++i) { + qreal angle = dial->dialWrapping ? Q_PI * 3 / 2 - i * 2 * Q_PI / notches + : (Q_PI * 8 - i * 10 * Q_PI / notches) / 6; + qreal s = qSin(angle); + qreal c = qCos(angle); + if (i == 0 || (((ns * i) % (dial->pageStep ? dial->pageStep : 1)) == 0)) { + poly[2 * i] = QPointF(xc + (r - bigLineSize) * c, + yc - (r - bigLineSize) * s); + poly[2 * i + 1] = QPointF(xc + r * c, yc - r * s); + } else { + poly[2 * i] = QPointF(xc + (r - 1 - smallLineSize) * c, + yc - (r - 1 - smallLineSize) * s); + poly[2 * i + 1] = QPointF(xc + (r - 1) * c, yc -(r - 1) * s); + } + } + return poly; +} + + +// This will draw a nice and shiny QDial for us. We don't want +// all the shinyness in QWindowsStyle, hence we place it here + +void QStyleHelper::drawDial(const QStyleOptionSlider *option, QPainter *painter) +{ + QPalette pal = option->palette; + QColor buttonColor = pal.button().color(); + const int width = option->rect.width(); + const int height = option->rect.height(); + const bool enabled = option->state & QStyle::State_Enabled; + qreal r = qMin(width, height) / 2; + r -= r/50; + const qreal penSize = r/20.0; + + painter->save(); + painter->setRenderHint(QPainter::Antialiasing); + + // Draw notches + if (option->subControls & QStyle::SC_DialTickmarks) { + painter->setPen(option->palette.dark().color().darker(120)); + painter->drawLines(QStyleHelper::calcLines(option)); + } + + // Cache dial background + BEGIN_STYLE_PIXMAPCACHE(QString::fromLatin1("qdial")); + p->setRenderHint(QPainter::Antialiasing); + + const qreal d_ = r / 6; + const qreal dx = option->rect.x() + d_ + (width - 2 * r) / 2 + 1; + const qreal dy = option->rect.y() + d_ + (height - 2 * r) / 2 + 1; + + QRectF br = QRectF(dx + 0.5, dy + 0.5, + int(r * 2 - 2 * d_ - 2), + int(r * 2 - 2 * d_ - 2)); + buttonColor.setHsv(buttonColor .hue(), + qMin(140, buttonColor .saturation()), + qMax(180, buttonColor.value())); + QColor shadowColor(0, 0, 0, 20); + + if (enabled) { + // Drop shadow + qreal shadowSize = qMax(1.0, penSize/2.0); + QRectF shadowRect= br.adjusted(-2*shadowSize, -2*shadowSize, + 2*shadowSize, 2*shadowSize); + QRadialGradient shadowGradient(shadowRect.center().x(), + shadowRect.center().y(), shadowRect.width()/2.0, + shadowRect.center().x(), shadowRect.center().y()); + shadowGradient.setColorAt(0.91, QColor(0, 0, 0, 40)); + shadowGradient.setColorAt(1.0, Qt::transparent); + p->setBrush(shadowGradient); + p->setPen(Qt::NoPen); + p->translate(shadowSize, shadowSize); + p->drawEllipse(shadowRect); + p->translate(-shadowSize, -shadowSize); + + // Main gradient + QRadialGradient gradient(br.center().x() - br.width()/3, dy, + br.width()*1.3, br.center().x(), + br.center().y() - br.height()/2); + gradient.setColorAt(0, buttonColor.lighter(110)); + gradient.setColorAt(0.5, buttonColor); + gradient.setColorAt(0.501, buttonColor.darker(102)); + gradient.setColorAt(1, buttonColor.darker(115)); + p->setBrush(gradient); + } else { + p->setBrush(Qt::NoBrush); + } + + p->setPen(QPen(buttonColor.darker(280))); + p->drawEllipse(br); + p->setBrush(Qt::NoBrush); + p->setPen(buttonColor.lighter(110)); + p->drawEllipse(br.adjusted(1, 1, -1, -1)); + if (option->state & QStyle::State_HasFocus) { + QColor highlight = pal.highlight().color(); + highlight.setHsv(highlight.hue(), + qMin(160, highlight.saturation()), + qMax(230, highlight.value())); + highlight.setAlpha(127); + p->setPen(QPen(highlight, 2.0)); + p->setBrush(Qt::NoBrush); + p->drawEllipse(br.adjusted(-1, -1, 1, 1)); + } + + END_STYLE_PIXMAPCACHE + + QPointF dp = calcRadialPos(option, 0.70); + buttonColor = buttonColor.lighter(104); + buttonColor.setAlphaF(0.8); + const float ds = r/7.0; + QRectF dialRect(dp.x() - ds, dp.y() - ds, 2*ds, 2*ds); + QRadialGradient dialGradient(dialRect.center().x() + dialRect.width()/2, + dialRect.center().y() + dialRect.width(), + dialRect.width()*2, + dialRect.center().x(), dialRect.center().y()); + dialGradient.setColorAt(1, buttonColor.darker(130)); + dialGradient.setColorAt(0.201, buttonColor.darker(105)); + dialGradient.setColorAt(0.2, buttonColor.darker(104)); + dialGradient.setColorAt(0, buttonColor.darker(102)); + + painter->setBrush(dialGradient); + painter->setPen(QColor(255, 255, 255, 150)); + painter->drawEllipse(dialRect.adjusted(-1, -1, 1, 1)); + painter->setPen(QColor(0, 0, 0, 50)); + painter->drawEllipse(dialRect); + if (penSize > 3.0) { + painter->setPen(QPen(QColor(0, 0, 0, 16), penSize/2.0)); + painter->drawLine(calcRadialPos(option, 0.95), calcRadialPos(option, 0.97)); + } + painter->restore(); +} +#endif //QT_NO_DIAL + +QT_END_NAMESPACE |