419 lines
13 KiB
C++
419 lines
13 KiB
C++
#include "slider_internal.h"
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#include <QEvent>
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#include <QPainter>
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#include <QDebug>
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#include <QPalette>
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#include <QPropertyAnimation>
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#include <QSignalTransition>
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#include <QEventTransition>
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#include "lib/style.h"
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#include "slider.h"
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SliderStateMachine::SliderStateMachine(Slider *parent,
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SliderThumb *thumb,
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SliderTrack *track)
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: QStateMachine(parent),
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slider(parent),
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_track(track),
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_thumb(thumb),
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_topState(new QState(QState::ParallelStates)),
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_fstState(new QState(_topState)),
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_inactiveState(new QState(_fstState)),
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_focusState(new QState(_fstState)),
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_slidingState(new QState(_fstState)),
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_pulseOutState(new QState(_focusState)),
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_pulseInState(new QState(_focusState)),
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_sndState(new QState(_topState)),
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_minState(new QState(_sndState)),
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_normalState(new QState(_sndState))
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{
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_focusState->setInitialState(_pulseOutState);
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_inactiveState->assignProperty(thumb, "haloSize", 0);
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_slidingState->assignProperty(thumb, "haloSize", 0);
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_pulseOutState->assignProperty(thumb, "haloSize", 35);
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_pulseInState->assignProperty(thumb, "haloSize", 28);
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_inactiveState->assignProperty(thumb, "diameter", 11);
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_focusState->assignProperty(thumb, "diameter", 11);
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_slidingState->assignProperty(thumb, "diameter", 17);
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addState(_topState);
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setInitialState(_topState);
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_fstState->setInitialState(_inactiveState);
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QAbstractTransition *transition;
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QPropertyAnimation *animation;
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// Show halo on mouse enter
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transition = new QSignalTransition(this, SIGNAL(noFocusMouseEnter()));
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transition->setTargetState(_focusState);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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transition->addAnimation(animation);
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transition->addAnimation(new QPropertyAnimation(track, "fillColor"));
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_inactiveState->addTransition(transition);
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// Show halo on focus in
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transition = new QEventTransition(parent, QEvent::FocusIn);
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transition->setTargetState(_focusState);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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transition->addAnimation(animation);
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transition->addAnimation(new QPropertyAnimation(track, "fillColor"));
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_inactiveState->addTransition(transition);
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// Hide halo on focus out
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transition = new QEventTransition(parent, QEvent::FocusOut);
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transition->setTargetState(_inactiveState);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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transition->addAnimation(animation);
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transition->addAnimation(new QPropertyAnimation(track, "fillColor"));
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_focusState->addTransition(transition);
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// Hide halo on mouse leave, except if widget has focus
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transition = new QSignalTransition(this, SIGNAL(noFocusMouseLeave()));
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transition->setTargetState(_inactiveState);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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transition->addAnimation(animation);
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transition->addAnimation(new QPropertyAnimation(track, "fillColor"));
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_focusState->addTransition(transition);
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// Pulse in
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transition = new QSignalTransition(_pulseOutState, SIGNAL(propertiesAssigned()));
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transition->setTargetState(_pulseInState);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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animation->setDuration(1000);
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transition->addAnimation(animation);
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_pulseOutState->addTransition(transition);
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// Pulse out
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transition = new QSignalTransition(_pulseInState, SIGNAL(propertiesAssigned()));
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transition->setTargetState(_pulseOutState);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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animation->setDuration(1000);
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transition->addAnimation(animation);
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_pulseInState->addTransition(transition);
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// Slider pressed
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transition = new QSignalTransition(parent, SIGNAL(sliderPressed()));
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transition->setTargetState(_slidingState);
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animation = new QPropertyAnimation(thumb, "diameter");
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animation->setDuration(70);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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transition->addAnimation(animation);
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_focusState->addTransition(transition);
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// Slider released
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transition = new QSignalTransition(parent, SIGNAL(sliderReleased()));
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transition->setTargetState(_focusState);
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animation = new QPropertyAnimation(thumb, "diameter");
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animation->setDuration(70);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "haloSize");
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animation->setEasingCurve(QEasingCurve::InOutSine);
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transition->addAnimation(animation);
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_slidingState->addTransition(transition);
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// Min. value transitions
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_minState->assignProperty(thumb, "borderWidth", 2);
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_normalState->assignProperty(thumb, "borderWidth", 0);
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_sndState->setInitialState(_minState);
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transition = new QSignalTransition(this, SIGNAL(changedFromMinimum()));
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transition->setTargetState(_normalState);
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animation = new QPropertyAnimation(thumb, "fillColor");
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animation->setDuration(200);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "haloColor");
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animation->setDuration(300);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "borderColor");
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animation->setDuration(200);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "borderWidth");
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animation->setDuration(200);
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transition->addAnimation(animation);
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_minState->addTransition(transition);
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transition = new QSignalTransition(this, SIGNAL(changedToMinimum()));
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transition->setTargetState(_minState);
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animation = new QPropertyAnimation(thumb, "fillColor");
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animation->setDuration(200);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "haloColor");
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animation->setDuration(300);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "borderColor");
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animation->setDuration(200);
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transition->addAnimation(animation);
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animation = new QPropertyAnimation(thumb, "borderWidth");
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animation->setDuration(200);
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transition->addAnimation(animation);
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_normalState->addTransition(transition);
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updatePalette();
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}
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SliderStateMachine::~SliderStateMachine()
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{
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}
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void SliderStateMachine::updatePalette()
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{
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QColor trackColor = slider->trackColor();
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QColor thumbColor = slider->thumbColor();
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_inactiveState->assignProperty(_track, "fillColor", trackColor.lighter(130));
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_slidingState->assignProperty(_track, "fillColor", trackColor);
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_focusState->assignProperty(_track, "fillColor", trackColor);
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_minState->assignProperty(_thumb, "fillColor", slider->palette().color(QPalette::Base));
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_minState->assignProperty(_thumb, "haloColor", trackColor);
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_minState->assignProperty(_thumb, "borderColor", trackColor);
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_normalState->assignProperty(_thumb, "fillColor", thumbColor);
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_normalState->assignProperty(_thumb, "haloColor", thumbColor);
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_normalState->assignProperty(_thumb, "borderColor", thumbColor);
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slider->update();
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}
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SliderThumb::SliderThumb(Slider *slider)
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: QWidget(slider->parentWidget()),
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slider(slider),
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_diameter(11),
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_borderWidth(2),
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_haloSize(0)
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{
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slider->installEventFilter(this);
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setAttribute(Qt::WA_TransparentForMouseEvents, true);
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connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(update()));
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connect(slider, SIGNAL(valueChanged(int)), this, SLOT(update()));
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}
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SliderThumb::~SliderThumb()
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{
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}
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bool SliderThumb::eventFilter(QObject *obj, QEvent *event)
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{
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QEvent::Type type = event->type();
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if (QEvent::ParentChange == type) {
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setParent(slider->parentWidget());
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} else if (QEvent::Resize == type || QEvent::Move == type) {
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QWidget *widget;
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if ((widget = parentWidget())) {
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setGeometry(widget->rect());
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}
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}
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return QWidget::eventFilter(obj, event);
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}
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void SliderThumb::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event)
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QPainter painter(this);
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// Halo
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QBrush brush;
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brush.setStyle(Qt::SolidPattern);
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brush.setColor(_haloColor);
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painter.setBrush(brush);
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painter.setPen(Qt::NoPen);
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painter.setRenderHint(QPainter::Antialiasing);
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QPointF disp = Qt::Horizontal == slider->orientation()
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? QPointF(SLIDER_MARGIN + slider->thumbOffset(), slider->height()/2)
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: QPointF(slider->width()/2, SLIDER_MARGIN + slider->thumbOffset());
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QRectF halo((slider->pos() - QPointF(_haloSize, _haloSize)/2) + disp,
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QSizeF(_haloSize, _haloSize));
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painter.setOpacity(0.15);
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painter.drawEllipse(halo);
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// Knob
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const bool isMin = slider->value() == slider->minimum();
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brush.setColor(slider->isEnabled()
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? _fillColor
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: slider->disabledColor());
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painter.setBrush(!slider->isEnabled() && isMin
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? Qt::NoBrush
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: brush);
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if (slider->isEnabled() || isMin) {
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QPen pen;
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pen.setColor(_borderColor);
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pen.setWidthF((isMin && !slider->isEnabled()) ? 1.7 : _borderWidth);
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painter.setPen(pen);
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} else {
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painter.setPen(Qt::NoPen);
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}
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QRectF geometry = Qt::Horizontal == slider->orientation()
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? QRectF(slider->thumbOffset(), slider->height()/2 - SLIDER_MARGIN,
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SLIDER_MARGIN*2, SLIDER_MARGIN*2).translated(slider->pos())
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: QRectF(slider->width()/2 - SLIDER_MARGIN, slider->thumbOffset(),
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SLIDER_MARGIN*2, SLIDER_MARGIN*2).translated(slider->pos());
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qreal s = slider->isEnabled() ? _diameter : 7;
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QRectF thumb(0, 0, s, s);
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thumb.moveCenter(geometry.center());
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painter.setOpacity(1);
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painter.drawEllipse(thumb);
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#ifdef DEBUG_LAYOUT
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QPen pen;
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pen.setColor(Qt::red);
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pen.setWidth(2);
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painter.setPen(pen);
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painter.setBrush(Qt::NoBrush);
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painter.drawRect(geometry);
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painter.drawRect(rect().adjusted(0, 0, -2, -2));
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#endif
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}
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SliderTrack::SliderTrack(Slider *slider)
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: QWidget(slider->parentWidget()),
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slider(slider),
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_trackWidth(2)
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{
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slider->installEventFilter(this);
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setAttribute(Qt::WA_TransparentForMouseEvents, true);
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connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(update()));
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}
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SliderTrack::~SliderTrack()
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{
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}
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bool SliderTrack::eventFilter(QObject *obj, QEvent *event)
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{
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QEvent::Type type = event->type();
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if (QEvent::ParentChange == type) {
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setParent(slider->parentWidget());
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} else if (QEvent::Resize == type || QEvent::Move == type) {
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if (parentWidget()) {
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setGeometry(parentWidget()->rect());
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}
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}
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return QWidget::eventFilter(obj, event);
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}
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void SliderTrack::paintEvent(QPaintEvent *event)
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{
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Q_UNUSED(event)
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QPainter painter(this);
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QBrush fg;
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fg.setStyle(Qt::SolidPattern);
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fg.setColor(slider->isEnabled() ? slider->thumbColor()
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: slider->disabledColor());
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QBrush bg;
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bg.setStyle(Qt::SolidPattern);
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bg.setColor(slider->isEnabled() ? _fillColor
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: slider->disabledColor());
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painter.setRenderHint(QPainter::Antialiasing);
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qreal offset = slider->thumbOffset();
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if (Qt::Horizontal == slider->orientation()) {
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painter.translate(slider->x() + SLIDER_MARGIN,
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slider->y() + slider->height()/2
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- static_cast<qreal>(_trackWidth)/2);
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} else {
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painter.translate(slider->x() + slider->width()/2
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- static_cast<qreal>(_trackWidth)/2,
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slider->y() + SLIDER_MARGIN);
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}
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QRectF geometry = Qt::Horizontal == slider->orientation()
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? QRectF(0, 0, slider->width() - SLIDER_MARGIN*2, _trackWidth)
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: QRectF(0, 0, _trackWidth, slider->height() - SLIDER_MARGIN*2);
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QRectF bgRect;
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QRectF fgRect;
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if (Qt::Horizontal == slider->orientation()) {
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fgRect = QRectF(0, 0, offset, _trackWidth);
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bgRect = QRectF(offset, 0, slider->width(), _trackWidth).intersected(geometry);
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} else {
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fgRect = QRectF(0, 0, _trackWidth, offset);
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bgRect = QRectF(0, offset, _trackWidth, slider->height()).intersected(geometry);
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}
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if (!slider->isEnabled()) {
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fgRect = fgRect.width() < 9 ? QRectF() : fgRect.adjusted(0, 0, -6, 0);
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bgRect = bgRect.width() < 9 ? QRectF() : bgRect.adjusted(6, 0, 0, 0);
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}
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if (slider->invertedAppearance()) {
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qSwap(bgRect, fgRect);
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}
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painter.fillRect(bgRect, bg);
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painter.fillRect(fgRect, fg);
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#ifdef DEBUG_LAYOUT
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if (slider->hovered()) {
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painter.save();
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painter.setPen(Qt::red);
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painter.drawRect(geometry);
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painter.restore();
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}
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#endif
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}
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