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Merge bitcoin-core/gui#125: Enable changing the autoprune block space size in intro dialog

Browse Source 
415fb2e1ab GUI/Intro: Move prune setting below explanation (Luke Dashjr)
2a84c6bcf6 GUI/Intro: Estimate max age of backups that can be restored with pruning (Luke Dashjr)
e2dcd957fa GUI/Intro: Rework UI flow to let the user set prune size in GBs (Luke Dashjr)
f2e5a6b54f GUI/Intro: Abstract GUI-to-option into Intro::getPrune (Luke Dashjr)
62932cc686 GUI/Intro: Return actual prune setting from showIfNeeded (Luke Dashjr)

Pull request description:

  ![Screenshot_20200911_095102](https://user-images.githubusercontent.com/1095675/92933661-0c4cea00-f436-11ea-9853-2456091ffab3.png)

  Moved from https://github.com/bitcoin/bitcoin/pull/18728

ACKs for top commit:
  ryanofsky:
    Code review ACK 415fb2e1ab. Changes since last review: mb/gib suffixes, constexpr QOverload expected_backup_days tweaks, new moveonly layout commit
  jarolrod:
    Tested ACK 415fb2e.
  Talkless:
    tACK 415fb2e1ab, tested on Debian Sid with Qt 5.15.2.
  hebasto:
    ACK 415fb2e1ab, my unresolved comments are not blockers, and they could be resolved in follow ups.

Tree-SHA512: bd4882a9c08e6a6eb14b7fb6366983db8581425b4949fea212785d34d8fad9e32fb81ca8c8cdbfb2c05ea394aaf5a746ba2cf16623795c7252c3bdb61d455f00
pull/826/head
Hennadii Stepanov 4 years ago
parent 298fd02e4a 415fb2e1ab
commit e1e1e708fa
No known key found for this signature in database
GPG Key ID: 410108112E7EA81F
5 changed files with 79 additions and 24 deletions
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12
src/qt/bitcoin.cpp
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@ -319,11 +319,9 @@ void BitcoinApplication::parameterSetup()
InitParameterInteraction(gArgs);
}
void BitcoinApplication::InitializePruneSetting(bool prune)
void BitcoinApplication::InitPruneSetting(int64_t prune_MiB)
{
// If prune is set, intentionally override existing prune size with
// the default size since this is called when choosing a new datadir.
optionsModel->SetPruneTargetGB(prune ? DEFAULT_PRUNE_TARGET_GB : 0, true);
optionsModel->SetPruneTargetGB(PruneMiBtoGB(prune_MiB), true);
}
void BitcoinApplication::requestInitialize()
@ -533,9 +531,9 @@ int GuiMain(int argc, char* argv[])
/// 5. Now that settings and translations are available, ask user for data directory
// User language is set up: pick a data directory
bool did_show_intro = false;
bool prune = false; // Intro dialog prune check box
int64_t prune_MiB = 0; // Intro dialog prune configuration
// Gracefully exit if the user cancels
if (!Intro::showIfNeeded(did_show_intro, prune)) return EXIT_SUCCESS;
if (!Intro::showIfNeeded(did_show_intro, prune_MiB)) return EXIT_SUCCESS;
/// 6. Determine availability of data directory and parse bitcoin.conf
/// - Do not call GetDataDir(true) before this step finishes
@ -617,7 +615,7 @@ int GuiMain(int argc, char* argv[])
if (did_show_intro) {
// Store intro dialog settings other than datadir (network specific)
app.InitializePruneSetting(prune);
app.InitPruneSetting(prune_MiB);
}
if (gArgs.GetBoolArg("-splash", DEFAULT_SPLASHSCREEN) && !gArgs.GetBoolArg("-min", false))

2
src/qt/bitcoin.h
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@ -68,7 +68,7 @@ public:
/// Create options model
void createOptionsModel(bool resetSettings);
/// Initialize prune setting
void InitializePruneSetting(bool prune);
void InitPruneSetting(int64_t prune_MiB);
/// Create main window
void createWindow(const NetworkStyle *networkStyle);
/// Create splash screen

53
src/qt/forms/intro.ui
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@ -7,7 +7,7 @@
<x>0</x>
<y>0</y>
<width>674</width>
<height>415</height>
<height>447</height>
</rect>
</property>
<property name="windowTitle">
@ -210,16 +210,6 @@
</property>
</widget>
</item>
<item>
<widget class="QCheckBox" name="prune">
<property name="toolTip">
<string>Reverting this setting requires re-downloading the entire blockchain. It is faster to download the full chain first and prune it later. Disables some advanced features.</string>
</property>
<property name="text">
<string></string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="lblExplanation2">
<property name="text">
@ -240,6 +230,47 @@
</property>
</widget>
</item>
<item>
<layout class="QHBoxLayout" name="pruneOptLayout">
<item>
<widget class="QCheckBox" name="prune">
<property name="text">
<string>Limit block chain storage to</string>
</property>
<property name="toolTip">
<string>Reverting this setting requires re-downloading the entire blockchain. It is faster to download the full chain first and prune it later. Disables some advanced features.</string>
</property>
</widget>
</item>
<item>
<widget class="QSpinBox" name="pruneGB">
<property name="suffix">
<string> GB</string>
</property>
</widget>
</item>
<item>
<widget class="QLabel" name="lblPruneSuffix">
<property name="buddy">
<cstring>pruneGB</cstring>
</property>
</widget>
</item>
<item>
<spacer name="horizontalSpacer_2">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<spacer name="verticalSpacer">
<property name="orientation">

31
src/qt/intro.cpp
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@ -17,6 +17,7 @@
#include <interfaces/node.h>
#include <util/system.h>
#include <validation.h>
#include <QFileDialog>
#include <QSettings>
@ -139,17 +140,26 @@ Intro::Intro(QWidget *parent, int64_t blockchain_size_gb, int64_t chain_state_si
);
ui->lblExplanation2->setText(ui->lblExplanation2->text().arg(PACKAGE_NAME));
const int min_prune_target_GB = std::ceil(MIN_DISK_SPACE_FOR_BLOCK_FILES / 1e9);
ui->pruneGB->setRange(min_prune_target_GB, std::numeric_limits<int>::max());
if (gArgs.GetArg("-prune", 0) > 1) { // -prune=1 means enabled, above that it's a size in MiB
ui->prune->setChecked(true);
ui->prune->setEnabled(false);
}
ui->prune->setText(tr("Discard blocks after verification, except most recent %1 GB (prune)").arg(m_prune_target_gb));
ui->pruneGB->setValue(m_prune_target_gb);
ui->pruneGB->setToolTip(ui->prune->toolTip());
ui->lblPruneSuffix->setToolTip(ui->prune->toolTip());
UpdatePruneLabels(ui->prune->isChecked());
connect(ui->prune, &QCheckBox::toggled, [this](bool prune_checked) {
UpdatePruneLabels(prune_checked);
UpdateFreeSpaceLabel();
});
connect(ui->pruneGB, QOverload<int>::of(&QSpinBox::valueChanged), [this](int prune_GB) {
m_prune_target_gb = prune_GB;
UpdatePruneLabels(ui->prune->isChecked());
UpdateFreeSpaceLabel();
});
startThread();
}
@ -182,7 +192,17 @@ void Intro::setDataDirectory(const QString &dataDir)
}
}
bool Intro::showIfNeeded(bool& did_show_intro, bool& prune)
int64_t Intro::getPruneMiB() const
{
switch (ui->prune->checkState()) {
case Qt::Checked:
return PruneGBtoMiB(m_prune_target_gb);
case Qt::Unchecked: default:
return 0;
}
}
bool Intro::showIfNeeded(bool& did_show_intro, int64_t& prune_MiB)
{
did_show_intro = false;
@ -233,7 +253,7 @@ bool Intro::showIfNeeded(bool& did_show_intro, bool& prune)
}
// Additional preferences:
prune = intro.ui->prune->isChecked();
prune_MiB = intro.getPruneMiB();
settings.setValue("strDataDir", dataDir);
settings.setValue("fReset", false);
@ -361,6 +381,11 @@ void Intro::UpdatePruneLabels(bool prune_checked)
storageRequiresMsg = tr("Approximately %1 GB of data will be stored in this directory.");
}
ui->lblExplanation3->setVisible(prune_checked);
ui->pruneGB->setEnabled(prune_checked);
static constexpr uint64_t nPowTargetSpacing = 10 * 60; // from chainparams, which we don't have at this stage
static constexpr uint32_t expected_block_data_size = 2250000; // includes undo data
const uint64_t expected_backup_days = m_prune_target_gb * 1e9 / (uint64_t(expected_block_data_size) * 86400 / nPowTargetSpacing);
ui->lblPruneSuffix->setText(tr("(sufficient to restore backups %n day(s) old)", "block chain pruning", expected_backup_days));
ui->sizeWarningLabel->setText(
tr("%1 will download and store a copy of the Bitcoin block chain.").arg(PACKAGE_NAME) + " " +
storageRequiresMsg.arg(m_required_space_gb) + " " +

5
src/qt/intro.h
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@ -36,6 +36,7 @@ public:
QString getDataDirectory();
void setDataDirectory(const QString &dataDir);
int64_t getPruneMiB() const;
/**
* Determine data directory. Let the user choose if the current one doesn't exist.
@ -47,7 +48,7 @@ public:
* @note do NOT call global GetDataDir() before calling this function, this
* will cause the wrong path to be cached.
*/
static bool showIfNeeded(bool& did_show_intro, bool& prune);
static bool showIfNeeded(bool& did_show_intro, int64_t& prune_MiB);
Q_SIGNALS:
void requestCheck();
@ -72,7 +73,7 @@ private:
//! Total required space (in GB) depending on user choice (prune or not prune).
int64_t m_required_space_gb{0};
uint64_t m_bytes_available{0};
const int64_t m_prune_target_gb;
int64_t m_prune_target_gb;
void startThread();
void checkPath(const QString &dataDir);

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