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#include <QPainter>
#include <QGraphicsProxyWidget>
#include <QGraphicsRotation>
#include <QList>
#include <QGraphicsTransform>
#include <QPropertyAnimation>
#include <QParallelAnimationGroup>
#include <QState>
#include <QEventTransition>
#include <QGraphicsSceneHoverEvent>
#include "graphicstoolbar.h"
bool HoverOutEventTransition::eventTest(QEvent *e) {
if (! QEventTransition::eventTest(e))
return false;
QGraphicsWidget *toolbar = qobject_cast<QGraphicsWidget*>(eventSource());
// if focus is now on a widget contained within the toolbar, don't transition
if (toolbar && toolbar->scene() && toolbar->isAncestorOf(toolbar->scene()->focusItem()))
return false;
return true;
}
GraphicsToolBar::GraphicsToolBar(QGraphicsScene *scene, QGraphicsItem * parent, Qt::WindowFlags wFlags)
: QGraphicsWidget(parent, wFlags)
, m_scene(scene)
, m_fillLevel(100)
{
m_scene->addItem(this);
m_layout = new QGraphicsLinearLayout(Qt::Horizontal, this);
setLayout(m_layout);
layout()->setContentsMargins(20, 20, 20, 20);
setFlag(QGraphicsItem::ItemIsMovable);
setAcceptHoverEvents(true);
m_fillLevelBrush = QBrush(Qt::transparent);
QLinearGradient bgGradient;
bgGradient.setCoordinateMode(QGradient::ObjectBoundingMode);
bgGradient.setStart(0, 0);
bgGradient.setFinalStop(0, 1);
bgGradient.setColorAt(0, QColor(Qt::gray).lighter(100));
bgGradient.setColorAt(1, QColor(Qt::gray).lighter(200));
m_bgBrush = bgGradient;
QPalette palette;
palette.setBrush(QPalette::Background, Qt::transparent);
setPalette(palette);
setOpacity(0.7);
m_blurEffect = new QGraphicsBlurEffect(this);
m_blurEffect->setProperty("blurRadius", 5);
setGraphicsEffect(m_blurEffect);
setGraphicsEffectsEnabled(true);
m_rotation = new QGraphicsRotation(this);
m_rotation->setAxis(Qt::YAxis);
m_rotation->setAngle(0);
QList<QGraphicsTransform *> txs;
txs << m_rotation;
setTransformations(txs);
QState *blurredState = new QState;
QState *normalState = new QState;
m_stateMachine.addState(blurredState);
m_stateMachine.addState(normalState);
m_stateMachine.setInitialState(normalState);
m_makeBlurred = new HoverOutEventTransition(this, QEvent::GraphicsSceneHoverLeave, normalState);
m_makeBlurred->setTargetState(blurredState);
m_makeNormal = new QEventTransition(this, QEvent::GraphicsSceneHoverEnter, blurredState);
m_makeNormal->setTargetState(normalState);
QParallelAnimationGroup *makeBlurAnimation = new QParallelAnimationGroup(this);
QParallelAnimationGroup *makeNormalAnimation = new QParallelAnimationGroup(this);
QPropertyAnimation *blurAnimation = new QPropertyAnimation(m_blurEffect, "blurRadius", makeBlurAnimation);
blurAnimation->setEndValue(5);
QPropertyAnimation *transparentizeAnimation = new QPropertyAnimation(this, "opacity", makeBlurAnimation);
transparentizeAnimation->setEndValue(0.7);
makeBlurAnimation->addAnimation(blurAnimation);
makeBlurAnimation->addAnimation(transparentizeAnimation);
QPropertyAnimation *unblurAnimation = new QPropertyAnimation(m_blurEffect, "blurRadius", makeNormalAnimation);
unblurAnimation->setEndValue(0);
QPropertyAnimation *untransparentizeAnimation = new QPropertyAnimation(this, "opacity", makeBlurAnimation);
untransparentizeAnimation->setEndValue(1.0);
makeNormalAnimation->addAnimation(unblurAnimation);
makeNormalAnimation->addAnimation(untransparentizeAnimation);
m_makeBlurred->addAnimation(makeBlurAnimation);
m_makeNormal->addAnimation(makeNormalAnimation);
m_stateMachine.start();
}
void GraphicsToolBar::setGraphicsEffectsEnabled(bool enabled) {
m_isGraphicsEffectsEnabled = enabled;
if (!enabled)
setGraphicsEffect(0);
else
setGraphicsEffect(m_blurEffect);
}
bool GraphicsToolBar::graphicsEffectsEnabled() const {
return m_isGraphicsEffectsEnabled;
}
QGraphicsRotation* GraphicsToolBar::rotation() const {
return m_rotation;
}
void GraphicsToolBar::addWidget(QWidget *widget) {
QGraphicsWidget *gw = m_scene->addWidget(widget);
m_layout->addItem(gw);
}
void GraphicsToolBar::setBackgroundBrush(QBrush brush) {
m_bgBrush = brush;
}
QBrush GraphicsToolBar::backgroundBrush() const {
return m_bgBrush;
}
void GraphicsToolBar::setFillLevelBrush(QBrush brush) {
m_fillLevelBrush = brush;
}
QBrush GraphicsToolBar::fillLevelBrush() const {
return m_fillLevelBrush;
}
void GraphicsToolBar::setFillLevel(int percent) {
m_fillLevel = qMax(0, qMin(percent, 100));
}
void GraphicsToolBar::paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) {
Q_UNUSED(option);
Q_UNUSED(widget);
painter->save();
painter->setPen(Qt::NoPen);
painter->setBrush(m_bgBrush);
painter->drawRoundedRect(boundingRect(), 10, 10);
if (m_fillLevel < 100) {
painter->setClipRect(boundingRect().adjusted(boundingRect().width() * (m_fillLevel / 100.0), 0, 0, 0));
painter->setBrush(m_fillLevelBrush);
painter->drawRoundedRect(boundingRect(), 10, 10);
}
painter->restore();
}
void GraphicsToolBar::transitionBlurEnabledTo(bool enabled) {
if (! graphicsEffectsEnabled())
return;
QParallelAnimationGroup *animGroup = new QParallelAnimationGroup(this);
QPropertyAnimation *blurAnimation = new QPropertyAnimation(m_blurEffect, "blurRadius", animGroup);
blurAnimation->setStartValue(enabled ? 0 : 5);
blurAnimation->setEndValue(enabled? 5 : 0);
blurAnimation->setDuration(enabled? 200 : 200);
QPropertyAnimation *opacityAnimation = new QPropertyAnimation(this, "opacity", animGroup);
opacityAnimation->setStartValue(enabled? 1.0 : 0.7);
opacityAnimation->setEndValue(enabled? 0.7 : 1.0);
animGroup->addAnimation(blurAnimation);
animGroup->addAnimation(opacityAnimation);
animGroup->start(QAbstractAnimation::DeleteWhenStopped);
}
void GraphicsToolBar::show() {
QGraphicsWidget::show();
setOpacity(1.0);
m_blurEffect->setProperty("blurRadius", 0);
}
void GraphicsToolBar::hide() {
QGraphicsWidget::hide();
}
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