add of fontSize and font functions

mainwindow.cpp

@@ -9,6 +9,8 @@
 #include <QTextEdit>
 #include <QColorDialog>
 #include <QPlainTextEdit>
+#include <QInputDialog>
+#include <QFontDialog>
 
 MainWindow::MainWindow(QWidget *parent)
     : QMainWindow(parent)
@@ -325,3 +327,50 @@ void MainWindow::on_actionOverline_triggered()
     this->setOverline();
 }
 
+void MainWindow::setSize(){
+    QWidget *focused = QApplication::focusWidget();
+    QPlainTextEdit* plainTextEdit = qobject_cast<QPlainTextEdit*>(focused);
+
+    if (plainTextEdit) {
+        QTextCursor cursor = plainTextEdit->textCursor();
+        if (cursor.hasSelection()) {
+            bool ok;
+            int size = QInputDialog::getInt(this, "Taille de la police", "Entrez la taille de la police:", cursor.charFormat().font().pointSize(), 1, 100, 1, &ok);
+
+            if (ok) {
+                QTextCharFormat format;
+                QFont font = cursor.charFormat().font();
+                font.setPointSize(size);
+                format.setFont(font);
+                cursor.mergeCharFormat(format);
+            }
+        }
+    }
+}
+void MainWindow::on_actionSize_triggered()
+{
+    this->setSize();
+}
+
+void MainWindow::setFont(){
+    QWidget *focused = QApplication::focusWidget();
+    QPlainTextEdit* plainTextEdit = qobject_cast<QPlainTextEdit*>(focused);
+
+    if (plainTextEdit) {
+        QTextCursor cursor = plainTextEdit->textCursor();
+        if (cursor.hasSelection()) {
+            bool ok;
+            QFont font = QFontDialog::getFont(&ok, cursor.charFormat().font(), this, "Choisir une police");
+            if (ok) {
+                QTextCharFormat format;
+                format.setFont(font);
+                cursor.mergeCharFormat(format);
+            }
+        }
+    }
+}
+void MainWindow::on_actionFont_triggered()
+{
+    this->setFont();
+}
+