Merge #17453: gui: Fix intro dialog labels when the prune button is toggled

4f7127d1e3 gui: Make Intro consistent with prune checkbox (Hennadii Stepanov)
4824a7d36c gui: Add Intro::UpdateFreeSpaceLabel() (Hennadii Stepanov)
daa3f3fa90 refactor: Add Intro::UpdatePruneLabels() (Hennadii Stepanov)
e4caa82a03 refactor: Replace static variable with data member (Hennadii Stepanov)
2bede28cd9 util: Add PruneGBtoMiB() function (Hennadii Stepanov)
e35e4b2ba0 util: Add PruneMiBtoGB() function (Hennadii Stepanov)

Pull request description:

  On master (a6f6333ba2) and on 0.19.0.1 the intro dialog with prune enabled (checkbox "Discard blocks..." is checked) provides a user with wrong info about the required disk space:

  ![DeepinScreenshot_bitcoin-qt_20191208112228](https://user-images.githubusercontent.com/32963518/70387510-8daab400-19ae-11ea-9338-29add9c31118.png)

  Also the paragraph "If you have chosen to limit..." is missed.

  ---

  With this PR when prune checkbox is toggled, the related text labels and the amount of required space shown are updated (previously they were only updated when the data directory was updated):
  ![Screenshot from 2019-12-08 11-34-53](https://user-images.githubusercontent.com/32963518/70387542-eed28780-19ae-11ea-9565-49d8a64b2f33.png)

  ---

  This PR is an alternative to #17035.

  **ryanofsky**'s [suggestion](https://github.com/bitcoin/bitcoin/pull/17035#discussion_r337594268) also has been implemented.

ACKs for top commit:
  emilengler:
    ACK 4f7127d1e3
  Sjors:
    tACK 4f7127d1e3
  ryanofsky:
    Code review ACK 4f7127d1e3. It seems like there are a few visible changes here:
  jonasschnelli:
    utACK 4f7127d1e3

Tree-SHA512: fa0bbdcfafde97d7906cda066cbd4608b936a71cae1b4cda3ee3aa2eed3a9795f279f14c6b1b4997278e094db891c7d3bb695368ba0882347aa42165a86e5172
This commit is contained in:
Jonas Schnelli
2020-01-27 18:15:32 +01:00
4 changed files with 82 additions and 48 deletions

View File

@@ -240,9 +240,8 @@ void OptionsModel::SetPruneEnabled(bool prune, bool force)
{
QSettings settings;
settings.setValue("bPrune", prune);
// Convert prune size from GB to MiB:
const uint64_t nPruneSizeMiB = (settings.value("nPruneSize").toInt() * GB_BYTES) >> 20;
std::string prune_val = prune ? std::to_string(nPruneSizeMiB) : "0";
const int64_t prune_target_mib = PruneGBtoMiB(settings.value("nPruneSize").toInt());
std::string prune_val = prune ? std::to_string(prune_target_mib) : "0";
if (force) {
m_node.forceSetArg("-prune", prune_val);
return;