prepare for log highlighter

Author: logic-wei

VisualLog.pro

@@ -28,12 +28,14 @@ SOURCES += \
         main.cpp \
         mainwindow.cpp \
     logviewer.cpp \
-    finder.cpp
+    finder.cpp \
+    highlighter.cpp
 
 HEADERS += \
         mainwindow.h \
     logviewer.h \
-    finder.h
+    finder.h \
+    highlighter.h
 
 FORMS +=
 

finder.cpp

@@ -1,6 +1,7 @@
 #include "finder.h"
 
 Finder::Finder(QWidget *parent):
+    QObject(parent),
     mDockWidget(new QDockWidget("finder", parent)),
     mRootWidget(new QWidget(mDockWidget)),
     mMainLayout(new QHBoxLayout(mRootWidget)),

highlighter.cpp

@@ -0,0 +1,7 @@
+#include "highlighter.h"
+
+Highlighter::Highlighter(QObject *parent):
+    QObject(parent)
+{
+
+}

highlighter.h

@@ -0,0 +1,24 @@
+#ifndef HIGHLIGHTER_H
+#define HIGHLIGHTER_H
+
+#include <QObject>
+#include <QSharedPointer>
+#include <QSyntaxHighlighter>
+
+
+class Highlighter : public QObject
+{
+    Q_OBJECT
+
+public:
+    explicit Highlighter(QObject *parent = nullptr);
+
+    QSharedPointer<QSyntaxHighlighter> logHighlighter();
+
+signals:
+    void logHighlighterChanged();
+
+public slots:
+};
+
+#endif // HIGHLIGHTER_H

logviewer.cpp

@@ -1,6 +1,7 @@
 #include "logviewer.h"
 
 LogViewer::LogViewer(QWidget *parent):
+    QObject(parent),
     mRootWidget(new QWidget(parent)),
     mRootLayout(new QGridLayout(mRootWidget)),
     mMainTabWidget(new QTabWidget(mRootWidget)),
@@ -43,15 +44,21 @@ void LogViewer::addViewport(QString title)
             this, &LogViewer::highlightCurrentLine);
 }
 
-void LogViewer::setHighlighter(QSyntaxHighlighter *highlighter)
+void LogViewer::setHighlighter(QSharedPointer<QSyntaxHighlighter> highlighter)
 {
+    Viewport *viewport;
     QPlainTextEdit *txtEdit;
     QTextDocument *txtDoc;
 
-    txtEdit = mViewportList->at(mCurrentIndex)->textEdit;
+    if (mCurrentIndex <= 0) return;
+
+    viewport = mViewportList->at(mCurrentIndex);
+    txtEdit = viewport->textEdit;
     txtDoc = txtEdit->document();
 
-    // todo
+    // remove older and set newer highlighter
+    viewport->highlighter = highlighter;
+    highlighter->setDocument(txtDoc);
 }
 
 void LogViewer::find(const QString &exp, const QTextDocument::FindFlags &options, bool regMode)

logviewer.h

@@ -20,6 +20,7 @@
 #include <QTextBlockFormat>
 #include <QTextBlock>
 #include <QTextFormat>
+#include <QSharedPointer>
 
 
 class LogViewer : public QObject
@@ -29,20 +30,22 @@ class LogViewer : public QObject
 public:
     struct Viewport {
     public:
-        Viewport(QString title, QPlainTextEdit *textEdit) {
-            this->title = title;
-            this->textEdit = textEdit;
-        }
+        Viewport(QString title, QPlainTextEdit *textEdit):
+            title(title),
+            textEdit(textEdit),
+            highlighter(nullptr){}
+
         QString title;
         QPlainTextEdit *textEdit;
+        QSharedPointer<QSyntaxHighlighter> highlighter;
     };
 
     LogViewer(QWidget *parent);
     virtual ~LogViewer();
 
     QWidget *rootWidget();
     void addViewport(QString title = "default.txt");
-    void setHighlighter(QSyntaxHighlighter *highlighter);
+    void setHighlighter(QSharedPointer<QSyntaxHighlighter> highlighter);
 
 public slots:
     void find(const QString &exp, const QTextDocument::FindFlags &options, bool regMode);