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Spinner: fade in

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krepa098 2015-02-06 14:02:31 +01:00
parent 3c349e29ad
commit f525fa83f3
2 changed files with 14 additions and 1 deletions
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11
src/chatlog/content/spinner.cpp
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@ -20,6 +20,7 @@
#include <QPainter> #include <QPainter>
#include <QGraphicsScene> #include <QGraphicsScene>
#include <QTime> #include <QTime>
#include <QVariantAnimation>
#include <QDebug> #include <QDebug>
Spinner::Spinner(const QString &img, QSize Size, qreal speed) Spinner::Spinner(const QString &img, QSize Size, qreal speed)
@ -31,6 +32,14 @@ Spinner::Spinner(const QString &img, QSize Size, qreal speed)
timer.setInterval(1000/30); // 30Hz timer.setInterval(1000/30); // 30Hz
timer.setSingleShot(false); timer.setSingleShot(false);
blendAnimation = new QVariantAnimation(this);
blendAnimation->setStartValue(0.0);
blendAnimation->setEndValue(1.0);
blendAnimation->setDuration(350);
blendAnimation->setEasingCurve(QEasingCurve::InCubic);
blendAnimation->start(QAbstractAnimation::DeleteWhenStopped);
connect(blendAnimation, &QVariantAnimation::valueChanged, this, [this](const QVariant& val) { alpha = val.toDouble(); });
QObject::connect(&timer, &QTimer::timeout, this, &Spinner::timeout); QObject::connect(&timer, &QTimer::timeout, this, &Spinner::timeout);
} }
@ -45,7 +54,7 @@ void Spinner::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, Q
QTransform trans = QTransform().rotate(QTime::currentTime().msecsSinceStartOfDay() / 1000.0 * rotSpeed) QTransform trans = QTransform().rotate(QTime::currentTime().msecsSinceStartOfDay() / 1000.0 * rotSpeed)
.translate(-size.width()/2.0, -size.height()/2.0); .translate(-size.width()/2.0, -size.height()/2.0);
painter->setOpacity(alpha);
painter->setTransform(trans, true); painter->setTransform(trans, true);
painter->setRenderHint(QPainter::SmoothPixmapTransform); painter->setRenderHint(QPainter::SmoothPixmapTransform);
painter->drawPixmap(0, 0, pmap); painter->drawPixmap(0, 0, pmap);

4
src/chatlog/content/spinner.h
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@ -23,6 +23,8 @@
#include <QObject> #include <QObject>
#include <QPixmap> #include <QPixmap>
class QVariantAnimation;
class Spinner : public QObject, public ChatLineContent class Spinner : public QObject, public ChatLineContent
{ {
Q_OBJECT Q_OBJECT
@ -43,6 +45,8 @@ private:
QPixmap pmap; QPixmap pmap;
qreal rotSpeed; qreal rotSpeed;
QTimer timer; QTimer timer;
qreal alpha = 0.0;
QVariantAnimation* blendAnimation;
}; };