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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
****************************************************************************/
#include "detailsbutton.h"
#include <utils/hostosinfo.h>
#include <QGraphicsOpacityEffect>
#include <QPropertyAnimation>
#include <QPaintEvent>
#include <QPainter>
#include <QStyleOption>
#if QT_VERSION >= 0x050100
#include <QGuiApplication>
#endif
using namespace Utils;
FadingWidget::FadingWidget(QWidget *parent) :
FadingPanel(parent),
m_opacityEffect(new QGraphicsOpacityEffect)
{
m_opacityEffect->setOpacity(0);
setGraphicsEffect(m_opacityEffect);
// Workaround for issue with QGraphicsEffect. GraphicsEffect
// currently clears with Window color. Remove if flickering
// no longer occurs on fade-in
QPalette pal;
pal.setBrush(QPalette::All, QPalette::Window, Qt::transparent);
setPalette(pal);
}
void FadingWidget::setOpacity(qreal value)
{
m_opacityEffect->setOpacity(value);
}
void FadingWidget::fadeTo(qreal value)
{
QPropertyAnimation *animation = new QPropertyAnimation(m_opacityEffect, "opacity");
animation->setDuration(200);
animation->setEndValue(value);
animation->start(QAbstractAnimation::DeleteWhenStopped);
}
qreal FadingWidget::opacity()
{
return m_opacityEffect->opacity();
}
DetailsButton::DetailsButton(QWidget *parent) : QAbstractButton(parent), m_fader(0)
{
setCheckable(true);
setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Minimum);
setText(tr("Details"));
}
QSize DetailsButton::sizeHint() const
{
// TODO: Adjust this when icons become available!
const int w = fontMetrics().width(text()) + 32;
if (HostOsInfo::isMacHost())
return QSize(w, 34);
return QSize(w, 22);
}
bool DetailsButton::event(QEvent *e)
{
switch (e->type()) {
case QEvent::Enter:
{
QPropertyAnimation *animation = new QPropertyAnimation(this, "fader");
animation->setDuration(200);
animation->setEndValue(1.0);
animation->start(QAbstractAnimation::DeleteWhenStopped);
}
break;
case QEvent::Leave:
{
QPropertyAnimation *animation = new QPropertyAnimation(this, "fader");
animation->setDuration(200);
animation->setEndValue(0.0);
animation->start(QAbstractAnimation::DeleteWhenStopped);
}
break;
default:
return QAbstractButton::event(e);
}
return false;
}
void DetailsButton::paintEvent(QPaintEvent *e)
{
QWidget::paintEvent(e);
QPainter p(this);
// draw hover animation
if (!HostOsInfo::isMacHost() && !isDown() && m_fader > 0)
p.fillRect(rect().adjusted(1, 1, -2, -2), QColor(255, 255, 255, int(m_fader*180)));
qreal checkedPixmapRatio = 1.0;
qreal uncheckedPixmapRatio = 1.0;
#if QT_VERSION >= 0x050100
checkedPixmapRatio = m_checkedPixmap.devicePixelRatio();
uncheckedPixmapRatio = m_uncheckedPixmap.devicePixelRatio();
#endif
if (isChecked()) {
if (m_checkedPixmap.isNull() || m_checkedPixmap.size() / checkedPixmapRatio != contentsRect().size())
m_checkedPixmap = cacheRendering(contentsRect().size(), true);
p.drawPixmap(contentsRect(), m_checkedPixmap);
} else {
if (m_uncheckedPixmap.isNull() || m_uncheckedPixmap.size() / uncheckedPixmapRatio != contentsRect().size())
m_uncheckedPixmap = cacheRendering(contentsRect().size(), false);
p.drawPixmap(contentsRect(), m_uncheckedPixmap);
}
if (isDown()) {
p.setPen(Qt::NoPen);
p.setBrush(QColor(0, 0, 0, 20));
p.drawRoundedRect(rect().adjusted(1, 1, -1, -1), 1, 1);
}
}
QPixmap DetailsButton::cacheRendering(const QSize &size, bool checked)
{
QLinearGradient lg;
lg.setCoordinateMode(QGradient::ObjectBoundingMode);
lg.setFinalStop(0, 1);
qreal pixelRatio = 1.0;
#if QT_VERSION >= 0x050100
pixelRatio = devicePixelRatio();
#endif
QPixmap pixmap(size * pixelRatio);
#if QT_VERSION >= 0x050100
pixmap.setDevicePixelRatio(pixelRatio);
#endif
pixmap.fill(Qt::transparent);
QPainter p(&pixmap);
p.setRenderHint(QPainter::Antialiasing, true);
p.translate(0.5, 0.5);
p.setPen(Qt::NoPen);
if (!checked) {
lg.setColorAt(0, QColor(0, 0, 0, 10));
lg.setColorAt(1, QColor(0, 0, 0, 16));
} else {
lg.setColorAt(0, QColor(255, 255, 255, 0));
lg.setColorAt(1, QColor(255, 255, 255, 50));
}
p.setBrush(lg);
p.setPen(QColor(255,255,255,140));
p.drawRoundedRect(1, 1, size.width()-3, size.height()-3, 1, 1);
p.setPen(QPen(QColor(0, 0, 0, 40)));
p.drawLine(0, 1, 0, size.height() - 2);
if (checked)
p.drawLine(1, size.height() - 1, size.width() - 1, size.height() - 1);
p.setPen(palette().color(QPalette::Text));
QRect textRect = p.fontMetrics().boundingRect(text());
textRect.setWidth(textRect.width() + 15);
textRect.setHeight(textRect.height() + 4);
textRect.moveCenter(rect().center());
p.drawText(textRect, Qt::AlignLeft | Qt::AlignVCenter, text());
int arrowsize = 15;
QStyleOption arrowOpt;
arrowOpt.initFrom(this);
QPalette pal = arrowOpt.palette;
pal.setBrush(QPalette::All, QPalette::Text, QColor(0, 0, 0));
arrowOpt.rect = QRect(size.width() - arrowsize - 6, height()/2-arrowsize/2, arrowsize, arrowsize);
arrowOpt.palette = pal;
style()->drawPrimitive(checked ? QStyle::PE_IndicatorArrowUp : QStyle::PE_IndicatorArrowDown, &arrowOpt, &p, this);
return pixmap;
}
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