1.finished designing the ui of highlighter tool

2.fix the bug:double free widget
3.fix the bug:double set layout

ps：
我真的想吐槽一句，QLayout的构造函数是QLayout(QWidget *parent)，
我一直以为QLayout的parent作用是和QWidget一样的，是为了自动回收
内存，没想到是自动调用QWidget::setLayout方法，直接导致我后面设
置layout报错，说我重复设置layout，醉了，害得我查了好久ˋ_ˊ* !!!

Author: 魏鹏

finder.cpp

@@ -3,7 +3,7 @@
 Finder::Finder(QWidget *parent):
     QDockWidget("finder", parent),
     mRootWidget(new QWidget(this)),
-    mMainLayout(new QHBoxLayout(mRootWidget)),
+    mMainLayout(new QHBoxLayout()),
     mRegModeBox(new QCheckBox("regular mode", mRootWidget)),
     mCaseSenseBox(new QCheckBox("case sensitively", mRootWidget)),
     mWholeWordBox(new QCheckBox("whole word", mRootWidget)),

highlighter.cpp

@@ -1,7 +1,49 @@
 #include "highlighter.h"
 
 Highlighter::Highlighter(QWidget *parent):
-    QDockWidget(parent)
+    QDockWidget(parent),
+    mRootWidget(new QWidget(parent)),
+    mMainLayout(new QVBoxLayout()),
+    mToolLayout(new QHBoxLayout()),
+    mControlLayout(new QHBoxLayout()),
+    mRegulationBox(new QComboBox(mRootWidget)),
+    mNewButton(new QToolButton(mRootWidget)),
+    mDelButton(new QToolButton(mRootWidget)),
+    mSaveButton(new QToolButton(mRootWidget)),
+    mTextEdit(new QPlainTextEdit(mRootWidget)),
+    mHighlightButton(new QToolButton(mRootWidget)),
+    mFindPreButton(new QPushButton(mRootWidget)),
+    mFindNxtButton(new QPushButton(mRootWidget))
 {
+    setupUi();
+}
+
+void Highlighter::setupUi()
+{
+    // widget setting
+    mRegulationBox->setEditable(true);
+    mNewButton->setText("+");
+    mDelButton->setText("-");
+    mSaveButton->setText("<<");
+    mHighlightButton->setText("H");
+    mFindPreButton->setText("find pre");
+    mFindNxtButton->setText("find next");
+
+    // layout setting
+    mToolLayout->addWidget(mRegulationBox);
+    mToolLayout->addWidget(mNewButton);
+    mToolLayout->addWidget(mDelButton);
+    mToolLayout->addWidget(mSaveButton);
+
+    mControlLayout->addWidget(mHighlightButton);
+    mControlLayout->addWidget(mFindPreButton);
+    mControlLayout->addWidget(mFindNxtButton);
+
+    mMainLayout->addItem(mToolLayout);
+    mMainLayout->addWidget(mTextEdit);
+    mMainLayout->addItem(mControlLayout);
 
+    // parent setting
+    mRootWidget->setLayout(mMainLayout);
+    setWidget(mRootWidget);
 }

highlighter.h

@@ -5,6 +5,13 @@
 #include <QSharedPointer>
 #include <QSyntaxHighlighter>
 #include <QDockWidget>
+#include <QPushButton>
+#include <QToolButton>
+#include <QPlainTextEdit>
+#include <QComboBox>
+#include <QHBoxLayout>
+#include <QLayout>
+#include <QVBoxLayout>
 
 
 class Highlighter : public QDockWidget
@@ -19,7 +26,23 @@ class Highlighter : public QDockWidget
 signals:
     void logHighlighterChanged();
 
-public slots:
+private:
+    void setupUi();
+
+private:
+    QWidget *mRootWidget;
+    QLayout *mMainLayout;
+    QLayout *mToolLayout;
+    QLayout *mControlLayout;
+
+    QComboBox       *mRegulationBox;
+    QToolButton     *mNewButton;
+    QToolButton     *mDelButton;
+    QToolButton     *mSaveButton;
+    QPlainTextEdit  *mTextEdit;
+    QToolButton     *mHighlightButton;
+    QPushButton     *mFindPreButton;
+    QPushButton     *mFindNxtButton;
 };
 
 #endif // HIGHLIGHTER_H

logviewer.cpp

@@ -2,7 +2,7 @@
 
 LogViewer::LogViewer(QWidget *parent):
     QWidget(parent),
-    mRootLayout(new QGridLayout(this)),
+    mRootLayout(new QGridLayout()),
     mMainTabWidget(new QTabWidget(this)),
     mViewportList(new QVector<Viewport *>()),
     mCurrentIndex(0)

mainwindow.cpp

@@ -2,18 +2,29 @@
 
 MainWindow::MainWindow(QWidget *parent) :
     QMainWindow(parent),
-    mLogViewer(new LogViewer(parent)),
-    mFinder(new Finder(parent))
+    mLogViewer(new LogViewer(this)),
+    mFinder(new Finder(this)),
+    mHighlighter(new Highlighter(this))
 {
-    setWindowTitle("VisualLog");
-    mLogViewer->addViewport();
-    setCentralWidget(mLogViewer);
-    addDockWidget(Qt::DockWidgetArea::BottomDockWidgetArea, mFinder);
-
-    connect(mFinder, &Finder::findTriggered, mLogViewer, &LogViewer::find);
+    setupUi();
 }
 
 MainWindow::~MainWindow()
 {
 
 }
+
+void MainWindow::setupUi()
+{
+    // MainWindow settings
+    setWindowTitle("VisualLog");
+    setCentralWidget(mLogViewer);
+    addDockWidget(Qt::DockWidgetArea::BottomDockWidgetArea, mFinder);
+    addDockWidget(Qt::DockWidgetArea::RightDockWidgetArea, mHighlighter);
+
+    // children settings
+    mLogViewer->addViewport();
+
+    // others
+    connect(mFinder, &Finder::findTriggered, mLogViewer, &LogViewer::find);
+}

mainwindow.h

@@ -9,6 +9,7 @@
 
 #include "logviewer.h"
 #include "finder.h"
+#include "highlighter.h"
 
 
 namespace Ui {
@@ -24,8 +25,12 @@ class MainWindow : public QMainWindow
     ~MainWindow();
 
 private:
-    LogViewer *mLogViewer;
-    Finder *mFinder;
+    void setupUi();
+
+private:
+    LogViewer   *mLogViewer;
+    Finder      *mFinder;
+    Highlighter *mHighlighter;
 };
 
 #endif // MAINWINDOW_H