From f525fa83f3c08ee342fbf894f42ada771e9dc97c Mon Sep 17 00:00:00 2001
From: krepa098 <krepa098@users.noreply.github.com>
Date: Fri, 6 Feb 2015 14:02:31 +0100
Subject: [PATCH] Spinner: fade in

---
 src/chatlog/content/spinner.cpp | 11 ++++++++++-
 src/chatlog/content/spinner.h   |  4 ++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/src/chatlog/content/spinner.cpp b/src/chatlog/content/spinner.cpp
index 9f7901b48..0f43a22b2 100644
--- a/src/chatlog/content/spinner.cpp
+++ b/src/chatlog/content/spinner.cpp
@@ -20,6 +20,7 @@
 #include <QPainter>
 #include <QGraphicsScene>
 #include <QTime>
+#include <QVariantAnimation>
 #include <QDebug>
 
 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.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);
 }
 
@@ -45,7 +54,7 @@ void Spinner::paint(QPainter* painter, const QStyleOptionGraphicsItem* option, Q
 
     QTransform trans = QTransform().rotate(QTime::currentTime().msecsSinceStartOfDay() / 1000.0 * rotSpeed)
                                     .translate(-size.width()/2.0, -size.height()/2.0);
-
+    painter->setOpacity(alpha);
     painter->setTransform(trans, true);
     painter->setRenderHint(QPainter::SmoothPixmapTransform);
     painter->drawPixmap(0, 0, pmap);
diff --git a/src/chatlog/content/spinner.h b/src/chatlog/content/spinner.h
index c35b5a4a4..cdec722e1 100644
--- a/src/chatlog/content/spinner.h
+++ b/src/chatlog/content/spinner.h
@@ -23,6 +23,8 @@
 #include <QObject>
 #include <QPixmap>
 
+class QVariantAnimation;
+
 class Spinner : public QObject, public ChatLineContent
 {
     Q_OBJECT
@@ -43,6 +45,8 @@ private:
     QPixmap pmap;
     qreal rotSpeed;
     QTimer timer;
+    qreal alpha = 0.0;
+    QVariantAnimation* blendAnimation;
 
 };