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Fix Hexdump scroll for cursor moving out of bounds

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This commit is contained in:
Florian Märkl 2017-11-18 15:33:52 +01:00
parent 1bdb9ae80f
commit 4833a1bdc7
2 changed files with 60 additions and 33 deletions
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92
src/widgets/HexdumpWidget.cpp
View File

@ -53,33 +53,7 @@ HexdumpWidget::HexdumpWidget(QWidget *parent, Qt::WindowFlags flags) :
connect(ui->hexASCIIText, SIGNAL(customContextMenuRequested(const QPoint &)),
this, SLOT(showHexASCIIContextMenu(const QPoint &)));
// Synchronize hexdump scrolling
connect(ui->hexOffsetText->verticalScrollBar(), &QScrollBar::valueChanged,
ui->hexHexText->verticalScrollBar(), [this]() {
ui->hexHexText->verticalScrollBar()->setValue(ui->hexOffsetText->verticalScrollBar()->value());
});
connect(ui->hexOffsetText->verticalScrollBar(), &QScrollBar::valueChanged,
ui->hexASCIIText->verticalScrollBar(), [this]() {
ui->hexASCIIText->verticalScrollBar()->setValue(ui->hexOffsetText->verticalScrollBar()->value());
});
connect(ui->hexHexText->verticalScrollBar(), &QScrollBar::valueChanged,
ui->hexOffsetText->verticalScrollBar(), [this]() {
ui->hexOffsetText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
});
connect(ui->hexHexText->verticalScrollBar(), &QScrollBar::valueChanged,
ui->hexASCIIText->verticalScrollBar(), [this]() {
ui->hexASCIIText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
});
connect(ui->hexASCIIText->verticalScrollBar(), &QScrollBar::valueChanged,
ui->hexOffsetText->verticalScrollBar(), [this]() {
ui->hexOffsetText->verticalScrollBar()->setValue(ui->hexASCIIText->verticalScrollBar()->value());
});
connect(ui->hexASCIIText->verticalScrollBar(), &QScrollBar::valueChanged,
ui->hexHexText->verticalScrollBar(), [this]() {
ui->hexHexText->verticalScrollBar()->setValue(ui->hexASCIIText->verticalScrollBar()->value());
});
setupScrollSync();
// Control Disasm and Hex scroll to add more contents
connectScroll(false);
@ -104,6 +78,57 @@ HexdumpWidget::HexdumpWidget(const QString &title, QWidget *parent, Qt::WindowFl
}
void HexdumpWidget::setupScrollSync()
{
/*
* For some reason, QScrollBar::valueChanged is not emitted when
* the scrolling happened from moving the cursor beyond the visible content,
* so QPlainTextEdit::cursorPositionChanged has to be connected as well.
*/
auto offsetHexFunc = [this]() {
ui->hexHexText->verticalScrollBar()->setValue(ui->hexOffsetText->verticalScrollBar()->value());
};
auto offsetASCIIFunc = [this]() {
ui->hexASCIIText->verticalScrollBar()->setValue(ui->hexOffsetText->verticalScrollBar()->value());
};
connect(ui->hexOffsetText->verticalScrollBar(), &QScrollBar::valueChanged, ui->hexHexText->verticalScrollBar(), offsetHexFunc);
connect(ui->hexOffsetText, &QPlainTextEdit::cursorPositionChanged, ui->hexHexText->verticalScrollBar(), offsetHexFunc);
connect(ui->hexOffsetText->verticalScrollBar(), &QScrollBar::valueChanged, ui->hexASCIIText->verticalScrollBar(), offsetASCIIFunc);
connect(ui->hexOffsetText, &QPlainTextEdit::cursorPositionChanged, ui->hexASCIIText->verticalScrollBar(), offsetASCIIFunc);
auto hexOffsetFunc = [this]() {
ui->hexOffsetText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
};
auto hexASCIIFunc = [this]() {
ui->hexASCIIText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
};
connect(ui->hexHexText->verticalScrollBar(), &QScrollBar::valueChanged, ui->hexOffsetText->verticalScrollBar(), hexOffsetFunc);
connect(ui->hexHexText, &QPlainTextEdit::cursorPositionChanged, ui->hexOffsetText->verticalScrollBar(), hexOffsetFunc);
connect(ui->hexHexText->verticalScrollBar(), &QScrollBar::valueChanged, ui->hexASCIIText->verticalScrollBar(), hexASCIIFunc);
connect(ui->hexHexText, &QPlainTextEdit::cursorPositionChanged, ui->hexASCIIText->verticalScrollBar(), hexASCIIFunc);
auto asciiOffsetFunc = [this]() {
ui->hexOffsetText->verticalScrollBar()->setValue(ui->hexASCIIText->verticalScrollBar()->value());
};
auto asciiHexFunc = [this]() {
ui->hexHexText->verticalScrollBar()->setValue(ui->hexASCIIText->verticalScrollBar()->value());
};
connect(ui->hexASCIIText->verticalScrollBar(), &QScrollBar::valueChanged, ui->hexOffsetText->verticalScrollBar(), asciiOffsetFunc);
connect(ui->hexASCIIText, &QPlainTextEdit::cursorPositionChanged, ui->hexOffsetText->verticalScrollBar(), asciiOffsetFunc);
connect(ui->hexASCIIText->verticalScrollBar(), &QScrollBar::valueChanged, ui->hexHexText->verticalScrollBar(), asciiHexFunc);
connect(ui->hexASCIIText, &QPlainTextEdit::cursorPositionChanged, ui->hexHexText->verticalScrollBar(), asciiHexFunc);
}
void HexdumpWidget::on_seekChanged(RVA addr)
{
refresh(addr);
@ -118,16 +143,17 @@ void HexdumpWidget::raisePrioritizedMemoryWidget(CutterCore::MemoryWidgetType ty
}
}
void HexdumpWidget::connectScroll(bool disconnect)
{
if (disconnect)
{
this->disconnect(ui->hexASCIIText->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(hexScrolled()));
this->disconnect(ui->hexASCIIText->verticalScrollBar(), &QScrollBar::valueChanged, this, &HexdumpWidget::hexScrolled);
this->disconnect(ui->hexASCIIText, &QPlainTextEdit::cursorPositionChanged, this, &HexdumpWidget::hexScrolled);
}
else
{
connect(ui->hexASCIIText->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(hexScrolled()));
connect(ui->hexASCIIText->verticalScrollBar(), &QScrollBar::valueChanged, this, &HexdumpWidget::hexScrolled);
connect(ui->hexASCIIText, &QPlainTextEdit::cursorPositionChanged, this, &HexdumpWidget::hexScrolled);
}
}
@ -169,6 +195,7 @@ void HexdumpWidget::highlightHexCurrentLine()
highlightHexWords(cursor.selectedText());
}
void HexdumpWidget::highlightHexWords(const QString &str)
{
QString searchString = str;
@ -200,7 +227,6 @@ void HexdumpWidget::highlightHexWords(const QString &str)
cursor.endEditBlock();
}
void HexdumpWidget::refresh(RVA addr)
{
if (addr == RVA_INVALID)
@ -556,11 +582,11 @@ void HexdumpWidget::on_hexArchComboBox_2_currentTextChanged(const QString &/*arg
{
on_hexHexText_selectionChanged();
}
void HexdumpWidget::on_hexBitsComboBox_2_currentTextChanged(const QString &/*arg1*/)
{
on_hexHexText_selectionChanged();
}
/*
* Context menu functions
*/
@ -619,6 +645,7 @@ void HexdumpWidget::showHexASCIIContextMenu(const QPoint &pt)
delete menu;
}
/*
* Actions callback functions
*/
@ -639,7 +666,6 @@ void HexdumpWidget::on_actionSettings_menu_1_triggered()
}
}
void HexdumpWidget::setFonts(QFont font)
{
//ui->disasTextEdit_2->setFont(font);

1
src/widgets/HexdumpWidget.h
View File

@ -74,6 +74,7 @@ private:
std::array<QString, 3> fetchHexdump(RVA offset, RVA bytes);
void connectScroll(bool disconnect);
void setupScrollSync();
private slots:
void on_seekChanged(RVA addr);