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Limit Hexdump Scrolling from 0 to RVA_MAX

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This commit is contained in:
Florian Märkl 2018-04-13 12:13:57 +02:00
parent d3b8bcb62a
commit 1c58e2706c
2 changed files with 48 additions and 18 deletions
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14
src/Cutter.h
View File

@ -29,8 +29,20 @@
#define Core() (CutterCore::getInstance())
/*!
* \brief Type to be used for all kinds of addresses/offsets in r2 address space.
*/
typedef ut64 RVA;
#define RVA_INVALID UT64_MAX
/*!
* \brief Maximum value of RVA. Do NOT use this for specifying invalid values, use RVA_INVALID instead.
*/
#define RVA_MAX UT64_MAX
/*!
* \brief Value for specifying an invalid RVA.
*/
#define RVA_INVALID RVA_MAX
class RCoreLocked
{

52
src/widgets/HexdumpWidget.cpp
View File

@ -796,9 +796,10 @@ void HexdumpWidget::removeBottomLinesWithoutScroll(QTextEdit *textEdit, int line
QTextCursor textCursor = textEdit->textCursor();
for (int i = 0; i < lines; i++) {
QTextCursor cursor(block);
cursor.select(QTextCursor::BlockUnderCursor);
cursor.removeSelectedText();
block = block.previous();
//cursor.select(QTextCursor::BlockUnderCursor);
cursor.movePosition(QTextCursor::End, QTextCursor::KeepAnchor);
cursor.removeSelectedText();
}
}
@ -837,29 +838,46 @@ void HexdumpWidget::scrollChanged()
int firstLine = getDisplayedLined(ui->hexHexText);
if (firstLine < (bufferLines / 2)) {
first_loaded_address -= bufferLines * cols;
auto hexdump = fetchHexdump(first_loaded_address, bufferLines);
prependWithoutScroll(ui->hexOffsetText, hexdump[0]);
prependWithoutScroll(ui->hexHexText, hexdump[1]);
prependWithoutScroll(ui->hexASCIIText, hexdump[2]);
int loadLines = bufferLines;
RVA shift = static_cast<RVA>(loadLines * cols);
if (shift > first_loaded_address) {
loadLines = static_cast<int>(first_loaded_address / cols);
shift = first_loaded_address;
}
first_loaded_address -= shift;
last_loaded_address -= shift;
removeBottomLinesWithoutScroll(ui->hexOffsetText, bufferLines);
removeBottomLinesWithoutScroll(ui->hexHexText, bufferLines);
removeBottomLinesWithoutScroll(ui->hexASCIIText, bufferLines);
if (loadLines > 0) {
auto hexdump = fetchHexdump(first_loaded_address, loadLines);
prependWithoutScroll(ui->hexOffsetText, hexdump[0]);
prependWithoutScroll(ui->hexHexText, hexdump[1]);
prependWithoutScroll(ui->hexASCIIText, hexdump[2]);
ui->hexOffsetText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
ui->hexASCIIText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
removeBottomLinesWithoutScroll(ui->hexOffsetText, loadLines);
removeBottomLinesWithoutScroll(ui->hexHexText, loadLines);
removeBottomLinesWithoutScroll(ui->hexASCIIText, loadLines);
ui->hexOffsetText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
ui->hexASCIIText->verticalScrollBar()->setValue(ui->hexHexText->verticalScrollBar()->value());
}
}
int blocks = ui->hexHexText->document()->blockCount();
int lastLine = getDisplayedLined(ui->hexHexText, true);
if (blocks - lastLine < (bufferLines / 2)) {
auto hexdump = fetchHexdump(last_loaded_address, bufferLines);
last_loaded_address += bufferLines * cols;
removeTopLinesWithoutScroll(ui->hexOffsetText, bufferLines);
removeTopLinesWithoutScroll(ui->hexHexText, bufferLines);
removeTopLinesWithoutScroll(ui->hexASCIIText, bufferLines);
int loadLines = bufferLines;
RVA shift = static_cast<RVA>(loadLines * cols);
if (last_loaded_address > RVA_MAX - shift) {
shift = RVA_MAX - last_loaded_address;
loadLines = static_cast<int>(shift / cols);
}
auto hexdump = fetchHexdump(last_loaded_address, loadLines);
last_loaded_address += shift;
first_loaded_address += shift;
removeTopLinesWithoutScroll(ui->hexOffsetText, loadLines);
removeTopLinesWithoutScroll(ui->hexHexText, loadLines);
removeTopLinesWithoutScroll(ui->hexASCIIText, loadLines);
appendWithoutScroll(ui->hexOffsetText, hexdump[0]);
appendWithoutScroll(ui->hexHexText, hexdump[1]);
appendWithoutScroll(ui->hexASCIIText, hexdump[2]);