Reorganize codes

Reorganize all parts of codes;
Fix a bug that index page color is not correct when initialized.

src/workerthreads.h

@@ -6,21 +6,35 @@
 #include <QUrl>
 #include <QProcess>
 
-
 namespace AeaQt {
-    class HttpClient;
+class HttpClient;
 }
 
 class SpkAppInfoLoaderThread Q_DECL_FINAL : public QThread
 {
     Q_OBJECT
+
 public:
-    //explicit SpkAppInfoLoaderThread() = default;
+    // explicit SpkAppInfoLoaderThread() = default;
+
+protected:
     void run() Q_DECL_OVERRIDE;
+
+private:
+    QUrl targetUrl;
+    QString serverUrl;
+    bool finishedDownload = false;
+    int downloaderRetval = 0;
+
+    AeaQt::HttpClient *httpClient;
+
+    int waitDownload(QProcess& downloader);
+
 public slots:
     void setUrl(const QUrl &url);
     void setServer(const QString &server);
     void downloadFinished(int exitcode, QProcess::ExitStatus status);
+
 signals:
     void requestResetUi();
     void requestSetTags(QStringList *tagList);
@@ -28,16 +42,9 @@ signals:
                                   QString *website, QString *packageName,
                                   QUrl *fileUrl, bool isInstalled);
     void finishedIconLoad(QPixmap *icon);
-    void finishedScreenshotLoad(QPixmap *icon, int index); // 该信号必须以BlockingQueued方式连接
-    void finishAllLoading(); // 该信号必须以BlockingQueued方式连接
-private:
-    int waitDownload(QProcess& downloader);
-    QUrl targetUrl;
-    QString serverUrl;
-    bool finishedDownload = false;
-    int downloaderRetval = 0;
+    void finishedScreenshotLoad(QPixmap *icon, int index);  // 该信号必须以 BlockingQueued 方式连接
+    void finishAllLoading();                                // 该信号必须以 BlockingQueued 方式连接
 
-    AeaQt::HttpClient *httpClient;
 };
 
 #endif // WORKERTHREADS_H