add support for billboard setting from URL

libraries/avatars/src/AvatarData.cpp

@@ -11,6 +11,9 @@
 #include <stdint.h>
 
 #include <QtCore/QDataStream>
+#include <QtNetwork/QNetworkAccessManager>
+#include <QtNetwork/QNetworkReply>
+#include <QtNetwork/QNetworkRequest>
 
 #include <NodeList.h>
 #include <PacketHeaders.h>
@@ -24,6 +27,8 @@ using namespace std;
 
 static const float fingerVectorRadix = 4; // bits of precision when converting from float<->fixed
 
+QNetworkAccessManager* AvatarData::networkAccessManager = NULL;
+
 AvatarData::AvatarData() :
     NodeData(),
     _handPosition(0,0,0),
@@ -338,6 +343,28 @@ void AvatarData::setBillboard(const QByteArray& billboard) {
     qDebug() << "Changing billboard for avatar.";
 }
 
+void AvatarData::setBillboardFromURL(const QString &billboardURL) {
+    _billboardURL = billboardURL;
+    
+    if (AvatarData::networkAccessManager) {
+        qDebug() << "Changing billboard for avatar to PNG at" << qPrintable(billboardURL);
+        
+        QNetworkRequest billboardRequest;
+        billboardRequest.setUrl(QUrl(billboardURL));
+        
+        QNetworkReply* networkReply = AvatarData::networkAccessManager->get(billboardRequest);
+        connect(networkReply, SIGNAL(finished()), this, SLOT(setBillboardFromNetworkReply()));
+        
+    } else {
+        qDebug() << "Billboard PNG download requested but no network access manager is available.";
+    }
+}
+
+void AvatarData::setBillboardFromNetworkReply() {
+    QNetworkReply* networkReply = reinterpret_cast<QNetworkReply*>(sender());
+    setBillboard(networkReply->readAll());
+}
+
 void AvatarData::setClampedTargetScale(float targetScale) {
     
     targetScale =  glm::clamp(targetScale, MIN_AVATAR_SCALE, MAX_AVATAR_SCALE);

libraries/avatars/src/AvatarData.h

@@ -68,6 +68,8 @@ enum KeyState {
 
 const glm::vec3 vec3Zero(0.0f);
 
+class QNetworkAccessManager;
+
 class AvatarData : public NodeData {
     Q_OBJECT
 
@@ -88,6 +90,7 @@ class AvatarData : public NodeData {
 
     Q_PROPERTY(QString faceModelURL READ getFaceModelURLFromScript WRITE setFaceModelURLFromScript)
     Q_PROPERTY(QString skeletonModelURL READ getSkeletonModelURLFromScript WRITE setSkeletonModelURLFromScript)
+    Q_PROPERTY(QString billboardURL READ getBillboardURL WRITE setBillboardFromURL)
 public:
     AvatarData();
     ~AvatarData();
@@ -170,6 +173,9 @@ public:
     virtual void setBillboard(const QByteArray& billboard);
     const QByteArray& getBillboard() const { return _billboard; }
     
+    void setBillboardFromURL(const QString& billboardURL);
+    const QString& getBillboardURL() { return _billboardURL; }
+    
     QString getFaceModelURLFromScript() const { return _faceModelURL.toString(); }
     void setFaceModelURLFromScript(const QString& faceModelString) { setFaceModelURL(faceModelString); }
     
@@ -178,10 +184,12 @@ public:
     
     virtual float getBoundingRadius() const { return 1.f; }
     
+    static void setNetworkAccessManager(QNetworkAccessManager* sharedAccessManager) { networkAccessManager = sharedAccessManager; }
+
 public slots:
     void sendIdentityPacket();
     void sendBillboardPacket();
-
+    void setBillboardFromNetworkReply();
 protected:
     glm::vec3 _position;
     glm::vec3 _handPosition;
@@ -217,6 +225,9 @@ protected:
     float _displayNameAlpha;
 
     QByteArray _billboard;
+    QString _billboardURL;
+    
+    static QNetworkAccessManager* networkAccessManager;
 
 private:
     // privatize the copy constructor and assignment operator so they cannot be called