added basic tabs

notebookbutton.cpp

@@ -1,6 +1,78 @@
 #include "notebookbutton.h"
+#include "QPainter"
 
-NotebookButton::NotebookButton()
+NotebookButton::NotebookButton(QWidget *parent)
+    : QWidget(parent)
 {
 
 }
+
+void NotebookButton::paintEvent(QPaintEvent *)
+{
+    QPainter painter(this);
+
+    QColor background;
+    QColor foreground;
+
+    if (mouseDown)
+    {
+        foreground = QColor(0, 0, 0);
+        background = QColor(255, 255, 255);
+    }
+    else if (mouseOver)
+    {
+        foreground = QColor(255, 255, 255);
+        background = QColor(0, 0, 0);
+    }
+    else
+    {
+        foreground = QColor(0, 0, 0);
+        background = QColor(255, 255, 255);
+    }
+
+    painter.fillRect(this->rect(), background);
+
+    float h = this->height(), w = this->width();
+
+    if (icon == IconPlus)
+    {
+        painter.fillRect(QRectF((h / 12) * 2 + 1, (h / 12) * 5 + 1, w - ((h / 12) * 5), (h / 12) * 1), foreground);
+        painter.fillRect(QRectF((h / 12) * 5 + 1, (h / 12) * 2 + 1, (h / 12) * 1, w - ((h / 12) * 5)), foreground);
+    }
+    else if (icon == IconUser)
+    {
+
+    }
+    else // IconSettings
+    {
+
+    }
+}
+
+void NotebookButton::mousePressEvent(QMouseEvent *)
+{
+    mouseDown = true;
+
+    this->repaint();
+}
+
+void NotebookButton::mouseReleaseEvent(QMouseEvent *)
+{
+    mouseDown = false;
+
+    this->repaint();
+}
+
+void NotebookButton::enterEvent(QEvent *)
+{
+    mouseOver = true;
+
+    this->repaint();
+}
+
+void NotebookButton::leaveEvent(QEvent *)
+{
+    mouseOver = false;
+
+    this->repaint();
+}