工具栏增加插入<br>HTML标签

mainwindow.cpp

@@ -735,10 +735,19 @@ void MainWindow::anchorClick(QUrl url)
     }
 }
 
+void MainWindow::on_action_br_triggered()
+{
+    QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
+    if(window != nullptr){
+        MdiChild *child = (MdiChild*)(window->widget());
+        child->insertBR();
+    }
+}
+
 void MainWindow::on_action_tr_triggered()
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertTR();
     }
@@ -747,7 +756,7 @@ void MainWindow::on_action_tr_triggered()
 void MainWindow::on_action_td_triggered()
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertTD();
     }
@@ -756,7 +765,7 @@ void MainWindow::on_action_td_triggered()
 void MainWindow::on_action_p_triggered()
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertP();
     }
@@ -765,7 +774,7 @@ void MainWindow::on_action_p_triggered()
 void MainWindow::on_action_div_triggered()
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertDIV(lineEdit_command->text());
     }
@@ -774,7 +783,7 @@ void MainWindow::on_action_div_triggered()
 void MainWindow::on_action_a_triggered()
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertA(lineEdit_command->text());
     }
@@ -783,7 +792,7 @@ void MainWindow::on_action_a_triggered()
 void MainWindow::on_action_img_triggered()
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertImg(lineEdit_command->text());
     }
@@ -792,7 +801,7 @@ void MainWindow::on_action_img_triggered()
 void MainWindow::comboBoxHChanged(QString s)
 {
     QMdiSubWindow *window = ui->mdiArea->currentSubWindow();
-    if(window != 0){
+    if(window != nullptr){
         MdiChild *child = (MdiChild*)(window->widget());
         child->insertH(s);
     }

mainwindow.h

@@ -61,6 +61,7 @@ private slots:
     void on_action_find_triggered();
     void on_action_indent_triggered();
     void on_action_font_triggered();
+    void on_action_br_triggered();
     void on_action_tr_triggered();
     void on_action_td_triggered();
     void on_action_p_triggered();

mainwindow.ui

@@ -74,7 +74,7 @@
      <x>0</x>
      <y>0</y>
      <width>800</width>
-     <height>26</height>
+     <height>36</height>
     </rect>
    </property>
    <widget class="QMenu" name="menu">
@@ -146,6 +146,7 @@
    </attribute>
    <addaction name="action_font"/>
    <addaction name="action_run"/>
+   <addaction name="action_br"/>
    <addaction name="action_tr"/>
    <addaction name="action_td"/>
    <addaction name="action_p"/>
@@ -523,6 +524,11 @@
     <string>Ctrl+Shift+I</string>
    </property>
   </action>
+  <action name="action_br">
+   <property name="text">
+    <string>br</string>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>

mdichild.cpp

@@ -237,6 +237,11 @@ void MdiChild::setReadOnlyA(bool b)
     setReadOnly(b);
 }
 
+void MdiChild::insertBR()
+{
+    textCursor().insertText("<br>");
+}
+
 void MdiChild::insertH(QString h)
 {
     QString s = textCursor().selection().toPlainText(); //可以显示换行符

mdichild.h

@@ -20,6 +20,7 @@ public:
     void insertTR();
     void insertTD();
     void insertP();
+    void insertBR();
     void insertDIV(QString se);
     void insertA(QString se);
     void insertImg(QString se);