Line data    Source code

       1             : // Copyright (c) 2011-2019 The Bitcoin Core developers
       2             : // Distributed under the MIT software license, see the accompanying
       3             : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       4             : 
       5             : #ifndef BITCOIN_QT_INTRO_H
       6             : #define BITCOIN_QT_INTRO_H
       7             : 
       8             : #include <QDialog>
       9             : #include <QMutex>
      10             : #include <QThread>
      11             : 
      12             : static const bool DEFAULT_CHOOSE_DATADIR = false;
      13             : 
      14             : class FreespaceChecker;
      15             : 
      16             : namespace interfaces {
      17             :     class Node;
      18             : }
      19             : 
      20             : namespace Ui {
      21             :     class Intro;
      22             : }
      23             : 
      24             : /** Introduction screen (pre-GUI startup).
      25             :   Allows the user to choose a data directory,
      26             :   in which the wallet and block chain will be stored.
      27             :  */
      28             : class Intro : public QDialog
      29             : {
      30           0 :     Q_OBJECT
      31             : 
      32             : public:
      33             :     explicit Intro(QWidget *parent = nullptr,
      34             :                    int64_t blockchain_size_gb = 0, int64_t chain_state_size_gb = 0);
      35             :     ~Intro();
      36             : 
      37             :     QString getDataDirectory();
      38             :     void setDataDirectory(const QString &dataDir);
      39             : 
      40             :     /**
      41             :      * Determine data directory. Let the user choose if the current one doesn't exist.
      42             :      * Let the user configure additional preferences such as pruning.
      43             :      *
      44             :      * @returns true if a data directory was selected, false if the user cancelled the selection
      45             :      * dialog.
      46             :      *
      47             :      * @note do NOT call global GetDataDir() before calling this function, this
      48             :      * will cause the wrong path to be cached.
      49             :      */
      50             :     static bool showIfNeeded(bool& did_show_intro, bool& prune);
      51             : 
      52             : Q_SIGNALS:
      53             :     void requestCheck();
      54             : 
      55             : public Q_SLOTS:
      56             :     void setStatus(int status, const QString &message, quint64 bytesAvailable);
      57             : 
      58             : private Q_SLOTS:
      59             :     void on_dataDirectory_textChanged(const QString &arg1);
      60             :     void on_ellipsisButton_clicked();
      61             :     void on_dataDirDefault_clicked();
      62             :     void on_dataDirCustom_clicked();
      63             : 
      64             : private:
      65             :     Ui::Intro *ui;
      66             :     QThread *thread;
      67             :     QMutex mutex;
      68             :     bool signalled;
      69             :     QString pathToCheck;
      70             :     const int64_t m_blockchain_size_gb;
      71             :     const int64_t m_chain_state_size_gb;
      72             :     //! Total required space (in GB) depending on user choice (prune or not prune).
      73             :     int64_t m_required_space_gb{0};
      74             :     uint64_t m_bytes_available{0};
      75             :     const int64_t m_prune_target_gb;
      76             : 
      77             :     void startThread();
      78             :     void checkPath(const QString &dataDir);
      79             :     QString getPathToCheck();
      80             :     void UpdatePruneLabels(bool prune_checked);
      81             :     void UpdateFreeSpaceLabel();
      82             : 
      83             :     friend class FreespaceChecker;
      84             : };
      85             : 
      86             : #endif // BITCOIN_QT_INTRO_H