added gif frame updating

messages/lazyloadedimage.cpp

@@ -5,9 +5,12 @@
 #include "ircmanager.h"
 #include "windows.h"
 
+#include <QBuffer>
+#include <QImageReader>
 #include <QNetworkAccessManager>
 #include <QNetworkReply>
 #include <QNetworkRequest>
+#include <QTimer>
 #include <functional>
 
 namespace chatterino {
@@ -16,7 +19,9 @@ namespace messages {
 LazyLoadedImage::LazyLoadedImage(const QString &url, qreal scale,
                                  const QString &name, const QString &tooltip,
                                  const QMargins &margin, bool isHat)
-    : pixmap(NULL)
+    : currentPixmap(NULL)
+    , allFrames()
+    , currentFrame(0)
     , url(url)
     , name(name)
     , tooltip(tooltip)
@@ -31,7 +36,9 @@ LazyLoadedImage::LazyLoadedImage(const QString &url, qreal scale,
 LazyLoadedImage::LazyLoadedImage(QPixmap *image, qreal scale,
                                  const QString &name, const QString &tooltip,
                                  const QMargins &margin, bool isHat)
-    : pixmap(image)
+    : currentPixmap(image)
+    , allFrames()
+    , currentFrame(0)
     , url()
     , name(name)
     , tooltip(tooltip)
@@ -46,7 +53,6 @@ LazyLoadedImage::LazyLoadedImage(QPixmap *image, qreal scale,
 void
 LazyLoadedImage::loadImage()
 {
-    //    QThreadPool::globalInstance()->start(new LambdaQRunnable([=] {
     QNetworkAccessManager *manager = new QNetworkAccessManager();
 
     QUrl url(this->url);
@@ -55,21 +61,54 @@ LazyLoadedImage::loadImage()
     QNetworkReply *reply = manager->get(request);
 
     QObject::connect(reply, &QNetworkReply::finished, [=] {
-        QPixmap *pixmap = new QPixmap();
-        pixmap->loadFromData(reply->readAll());
+        QByteArray array = reply->readAll();
+        QBuffer buffer(&array);
+        buffer.open(QIODevice::ReadOnly);
 
-        if (pixmap->isNull()) {
-            return;
+        QImage image;
+        QImageReader reader(&buffer);
+
+        bool first = true;
+
+        for (int index = 0; index < reader.imageCount(); ++index) {
+            if (reader.read(&image)) {
+                auto pixmap = new QPixmap(QPixmap::fromImage(image));
+
+                if (first) {
+                    first = false;
+                    this->currentPixmap = pixmap;
+                }
+
+                FrameData data;
+                data.duration = std::max(20, reader.nextImageDelay());
+                data.image = pixmap;
+
+                allFrames.push_back(data);
+            }
+        }
+
+        if (allFrames.size() > 1) {
+            QObject::connect(&Emotes::getGifUpdateTimer(), &QTimer::timeout,
+                             [this] { gifUpdateTimout(); });
         }
 
-        this->pixmap = pixmap;
         Emotes::incGeneration();
         Windows::layoutVisibleChatWidgets();
 
         reply->deleteLater();
         manager->deleteLater();
     });
-    //    }));
+}
+
+void
+LazyLoadedImage::gifUpdateTimout()
+{
+    if (this->currentFrame >= this->allFrames.size() - 1) {
+        this->currentFrame = 0;
+        this->currentPixmap = this->allFrames.at(0).image;
+    } else {
+        this->currentPixmap = this->allFrames.at(++this->currentFrame).image;
+    }
 }
 }
 }