420 lines
13 KiB
C++
420 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 <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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{
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Style &style = Style::instance();
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QState *topState = new QState(QState::ParallelStates);
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QState *fstState = new QState(topState);
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QState *inactiveState = new QState(fstState);
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QState *focusState = new QState(fstState);
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QState *slidingState = new QState(fstState);
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QState *pulseOutState = new QState(focusState);
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QState *pulseInState = new QState(focusState);
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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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QColor fillColor = style.themeColor("primary1");
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inactiveState->assignProperty(track, "fillColor",
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style.themeColor("accent3").lighter(130));
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slidingState->assignProperty(track, "fillColor",
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style.themeColor("accent3"));
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focusState->assignProperty(track, "fillColor",
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style.themeColor("accent3"));
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addState(topState);
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fstState->setInitialState(inactiveState);
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setInitialState(topState);
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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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QState *sndState = new QState(topState);
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QState *minState = new QState(sndState);
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QState *normalState = new QState(sndState);
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QColor minHaloColor = style.themeColor("accent3");
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minHaloColor.setAlphaF(0.15);
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QColor haloColor = style.themeColor("primary1");
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haloColor.setAlphaF(0.15);
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QColor canvasColor = style.themeColor("canvas");
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minState->assignProperty(thumb, "fillColor", canvasColor);
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minState->assignProperty(thumb, "haloColor", minHaloColor);
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minState->assignProperty(thumb, "borderColor", style.themeColor("accent3"));
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minState->assignProperty(thumb, "borderWidth", 2);
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normalState->assignProperty(thumb, "fillColor", fillColor);
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normalState->assignProperty(thumb, "haloColor", haloColor);
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normalState->assignProperty(thumb, "borderColor", fillColor);
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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(200);
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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(200);
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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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}
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SliderStateMachine::~SliderStateMachine()
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{
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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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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.drawEllipse(halo);
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// Knob
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brush.setColor(slider->isEnabled()
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? _fillColor
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: Style::instance().themeColor("disabled"));
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painter.setBrush(brush);
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if (slider->isEnabled()) {
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QPen pen;
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pen.setColor(_borderColor);
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pen.setWidthF(_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.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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QWidget::paintEvent(event);
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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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QPainter painter(this);
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Style &style = Style::instance();
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QBrush fg;
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fg.setStyle(Qt::SolidPattern);
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fg.setColor(slider->isEnabled() ? style.themeColor("primary1")
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: style.themeColor("disabled"));
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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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: style.themeColor("disabled"));
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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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QWidget::paintEvent(event);
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}
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