Threaded image downloading (#118)

src/messages/lazyloadedimage.cpp

@@ -5,6 +5,7 @@
 #include "util/urlfetch.hpp"
 #include "windowmanager.hpp"
 
+#include <thread>
 #include <QBuffer>
 #include <QImageReader>
 #include <QNetworkAccessManager>
@@ -50,8 +51,17 @@ LazyLoadedImage::LazyLoadedImage(EmoteManager &_emoteManager, WindowManager &_wi
 
 void LazyLoadedImage::loadImage()
 {
-    util::urlFetch(this->url, [=](QNetworkReply &reply) {
-        QByteArray array = reply.readAll();
+	std::thread([=] () {
+		QNetworkRequest request;
+		request.setUrl(QUrl(this->url));
+		QNetworkAccessManager NaM;
+		QEventLoop eventLoop;
+		QNetworkReply *reply = NaM.get(request);
+		QObject::connect(reply, &QNetworkReply::finished, &eventLoop, &QEventLoop::quit);
+		eventLoop.exec(); // Wait until response is read.
+
+		qDebug() << "Received emote " << this->url;
+		QByteArray array = reply->readAll();
 		QBuffer buffer(&array);
 		buffer.open(QIODevice::ReadOnly);
 
@@ -79,19 +89,19 @@ void LazyLoadedImage::loadImage()
 
 		if (this->allFrames.size() > 1) {
 			this->animated = true;
-
-            this->emoteManager.getGifUpdateSignal().connect([this] {
-                gifUpdateTimout();  //
-            });
 		}
 
 		this->emoteManager.incGeneration();
 		this->windowManager.layoutVisibleChatWidgets();
-    });
+
+		delete reply;
+	}).detach();
+	this->emoteManager.getGifUpdateSignal().connect([=] () { this->gifUpdateTimout(); }); // For some reason when Boost signal is in thread scope and thread deletes the signal doesn't work, so this is the fix.
 }
 
 void LazyLoadedImage::gifUpdateTimout()
 {
+	if (animated) {
 		this->currentFrameOffset += GIF_FRAME_LENGTH;
 
 		while (true) {
@@ -105,6 +115,7 @@ void LazyLoadedImage::gifUpdateTimout()
 
 		this->currentPixmap = this->allFrames[this->currentFrame].image;
 	}
+}
 
 const QPixmap *LazyLoadedImage::getPixmap()
 {

src/messages/lazyloadedimage.hpp

@@ -63,7 +63,6 @@ private:
     bool isLoading;
 
     void loadImage();
-
     void gifUpdateTimout();
 };