initial
This commit is contained in:
commit
c792e02da8
GPG Key ID:
596B2350DCD67504
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*.so*
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ui/*.h
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build/
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Makefile
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.qmake.stash
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.vscode/settings.json
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#pragma once
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#include <cstdint>
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#include <limits>
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#include <string>
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#include <QObject>
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class QMainWindow;
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class QTreeWidgetItem;
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namespace Ui {
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class DebugWindow;
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}
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class QtDebugger : public QObject {
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Q_OBJECT
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public:
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explicit QtDebugger(QObject* parent = nullptr);
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~QtDebugger();
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private slots:
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void refresh();
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void currentWindowChanged( int row );
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void currentObjectChanged( QTreeWidgetItem* new_ );
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protected:
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QMainWindow* debugWindow = nullptr;
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private:
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Ui::DebugWindow* ui;
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};
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TEMPLATE = lib
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QT += core gui
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greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
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CONFIG += c++17
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# debugging
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LIBS += -ldl
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CONFIG += debug
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# The following define makes your compiler emit warnings if you use
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# any Qt feature that has been marked deprecated (the exact warnings
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# depend on your compiler). Please consult the documentation of the
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# deprecated API in order to know how to port your code away from it.
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DEFINES += QT_DEPRECATED_WARNINGS
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# You can also make your code fail to compile if it uses deprecated APIs.
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# In order to do so, uncomment the following line.
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# You can also select to disable deprecated APIs only up to a certain version of Qt.
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#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
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MOC_DIR = build/generated/
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UI_DIR = ui/
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OBJECTS_DIR = build/
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INCLUDEPATH += $$PWD/include/
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SOURCES += \
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src/injector.cpp \
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src/qtdebugger.cpp
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HEADERS += \
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include/qtdebugger.h
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FORMS += \
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ui/debugwindow.ui
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// this file injects the debugger into the QApplication
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#include "qtdebugger.h"
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#include <iostream>
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#include <dlfcn.h>
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#include <QApplication>
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class QApplication;
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int QApplication::exec() {
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// init debugger
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QtDebugger debugger;
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// get real exec call
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static int (*real_exec)() = (int (*)())dlsym(RTLD_NEXT, "_ZN12QApplication4execEv");
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if ( !real_exec ) {
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// failed to init real exec
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return -1;
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}
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// call real exec call
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int returnVal = real_exec();
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// end debugger
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return returnVal;
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}
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#include "qtdebugger.h"
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#include "ui_debugwindow.h"
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#include <QApplication>
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#include <QDebug>
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#include <QMetaProperty>
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#include <QMainWindow>
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#include <QSplitter>
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#include <QWindow>
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#include <functional>
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#include <set>
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QtDebugger::QtDebugger(QObject* parent) : QObject(parent), debugWindow( new QMainWindow() ), ui( new Ui::DebugWindow() ) {
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this->ui->setupUi( debugWindow );
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debugWindow->show();
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QList<int> sizes;
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sizes << 40 << 70 << 150 << 490;
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this->ui->splitter->setSizes( sizes );
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QObject::connect( this->ui->refreshButton, &QPushButton::clicked, this, &QtDebugger::refresh );
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QObject::connect( this->ui->windowList, &QListWidget::currentRowChanged, this, &QtDebugger::currentWindowChanged );
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QObject::connect( this->ui->objectTree, &QTreeWidget::currentItemChanged, this, &QtDebugger::currentObjectChanged );
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this->refresh();
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}
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QtDebugger::~QtDebugger() {
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delete this->debugWindow;
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delete this->ui;
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}
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void QtDebugger::refresh() {
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this->ui->windowList->clear();
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this->ui->objectTree->clear();
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this->ui->propertiesTree->clear();
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// get windows
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QWindowList windows = qApp->allWindows();
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for( const QWindow* win : windows ) {
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QListWidgetItem* item = new QListWidgetItem( win->title() );
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if ( win->winId() == debugWindow->winId() ) {
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// not selectable or anything
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item->setFlags( item->flags() & ~(Qt::ItemIsSelectable | Qt::ItemIsUserCheckable | Qt::ItemIsEnabled) );
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}
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item->setData(Qt::UserRole, win->winId());
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this->ui->windowList->addItem( item );
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}
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this->currentWindowChanged( 0 );
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}
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void QtDebugger::currentWindowChanged( int row ) {
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this->ui->objectTree->clear();
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this->ui->propertiesTree->clear();
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if ( row == -1) {
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return;
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}
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// find the window id
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QListWidgetItem* item = this->ui->windowList->item( row );
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if( !item ) {
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return;
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}
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QVariant data = item->data(Qt::UserRole);
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bool ok = true;
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WId wid = data.toULongLong( &ok );
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// find the window
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QWindowList windows = qApp->allWindows();
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auto it = std::find_if( windows.constBegin(), windows.constEnd(), [wid](const QWindow* w){ return w->winId() == wid; } );
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if( !ok || it == windows.constEnd() ) {
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qWarning() << "invalid window";
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return;
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}
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const QWindow* win = *it;
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// update the tree
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QTreeWidgetItem* root = new QTreeWidgetItem( );
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root->setText( 0, "root" );
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this->ui->objectTree->insertTopLevelItem( 0, root );
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std::function<void(const QObject*, uint32_t, uint32_t, QTreeWidgetItem*)> walkTree = [&](const QObject* obj, uint32_t maxdepth, uint32_t currentDepth, QTreeWidgetItem* root) {
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if ( !obj ) {
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return;
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}
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QTreeWidgetItem* item = new QTreeWidgetItem( );
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item->setText(0, obj->metaObject()->className() );
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item->setText(1, obj->objectName() );
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item->setData(0, Qt::UserRole, QVariant((unsigned long long) obj));
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root->addChild( item );
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if( currentDepth < maxdepth ) {
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const QObjectList& childs = obj->children();
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for( const QObject* child : childs ) {
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walkTree( child, maxdepth, currentDepth+1, item );
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}
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}
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};
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walkTree( qApp, 128, 0, root);
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walkTree( win, 128, 0, root);
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}
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void QtDebugger::currentObjectChanged( QTreeWidgetItem* new_ ) {
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this->ui->propertiesTree->clear();
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if ( !new_ ) {
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qWarning() << "invalid row";
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return;
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}
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// find the object
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QVariant variant = new_->data(0, Qt::UserRole);
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QObject* obj = (QObject*) variant.toULongLong();
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if( !obj ) {
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qWarning() << "invalid Object";
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return;
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}
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// update the tree
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std::function<void(const QMetaObject*)> readProperties
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= [&] (const QMetaObject* meta) {
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if (!meta) {
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return;
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}
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QTreeWidgetItem* item = new QTreeWidgetItem();
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item->setText(0, meta->className());
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this->ui->propertiesTree->insertTopLevelItem( 0, item );
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item->setExpanded( true );
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// read superclass properties
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readProperties(meta->superClass());
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for( int32_t i = meta->propertyOffset(); i < meta->propertyCount(); ++i ) {
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QMetaProperty prop = meta->property(i);
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QString propName = prop.name();
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QVariant propVal = prop.read(obj);
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// QString value = propVal.canConvert<QString>() ? propVal.value<QString>() : "<unconvertable>";
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QTreeWidgetItem* propItem = new QTreeWidgetItem();
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propItem->setText(0, prop.typeName());
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propItem->setText(1, propName);
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propItem->setData(2, Qt::DisplayRole, propVal);
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item->addChild( propItem );
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}
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};
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readProperties( obj->metaObject() );
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<ui version="4.0">
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<class>DebugWindow</class>
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<widget class="QMainWindow" name="DebugWindow">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>511</width>
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<height>812</height>
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</rect>
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</property>
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<property name="windowTitle">
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<string>DebugWindow</string>
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</property>
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<widget class="QSplitter" name="splitter">
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<property name="orientation">
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<enum>Qt::Vertical</enum>
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</property>
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<property name="childrenCollapsible">
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<bool>false</bool>
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</property>
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<widget class="QPushButton" name="refreshButton">
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<property name="minimumSize">
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<size>
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<width>0</width>
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<height>20</height>
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</size>
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</property>
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<property name="maximumSize">
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<size>
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<width>16777215</width>
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<height>40</height>
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</size>
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</property>
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<property name="text">
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<string>Refresh</string>
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</property>
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</widget>
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<widget class="QListWidget" name="windowList"/>
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<widget class="QTreeWidget" name="objectTree">
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<property name="indentation">
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<number>20</number>
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</property>
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<property name="columnCount">
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<number>2</number>
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</property>
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<attribute name="headerDefaultSectionSize">
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<number>200</number>
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</attribute>
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<column>
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<property name="text">
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<string notr="true">Type</string>
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</property>
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</column>
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<column>
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<property name="text">
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<string notr="true">Name</string>
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</property>
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</column>
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</widget>
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<widget class="QTreeWidget" name="propertiesTree">
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<property name="columnCount">
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<number>3</number>
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</property>
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<attribute name="headerDefaultSectionSize">
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<number>200</number>
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</attribute>
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<column>
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<property name="text">
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<string notr="true">Type</string>
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</property>
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</column>
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<column>
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<property name="text">
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<string>Name</string>
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</property>
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</column>
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<column>
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<property name="text">
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<string>Value</string>
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</property>
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</column>
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</widget>
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</widget>
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<widget class="QMenuBar" name="menubar">
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<property name="geometry">
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<rect>
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<x>0</x>
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<y>0</y>
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<width>511</width>
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<height>24</height>
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</rect>
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</property>
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</widget>
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<widget class="QStatusBar" name="statusbar"/>
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</widget>
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<resources/>
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<connections/>
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</ui>
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