implement Icon Menu and examples

components/iconmenu.cpp

@@ -1,10 +1,40 @@
+#include <QEvent>
 #include "iconmenu.h"
+#include "menu.h"
 
-IconMenu::IconMenu(QWidget *parent)
+MenuOverlay::MenuOverlay(QWidget *parent)
     : QWidget(parent)
 {
+    setAttribute(Qt::WA_TransparentForMouseEvents);
+    setAttribute(Qt::WA_NoSystemBackground);
+}
+
+MenuOverlay::~MenuOverlay()
+{
+}
+
+IconMenu::IconMenu(const QIcon &icon, QWidget *parent)
+    : IconButton(icon, parent),
+      _overlay(new MenuOverlay(parent)),
+      _geometryWidget(0),
+      _menu(new Menu)
+{
+    _menu->setParent(_overlay);
+
+    _menu->addMenuItem("Maps");
+    _menu->addMenuItem("Books");
+    _menu->addMenuItem("Flights");
+    _menu->addMenuItem("Apps");
 }
 
 IconMenu::~IconMenu()
 {
 }
+
+bool IconMenu::event(QEvent *event)
+{
+    if (QEvent::ParentChange == event->type()) {
+        _menu->setParent(parentWidget());
+    }
+    return IconButton::event(event);
+}

components/iconmenu.h

@@ -2,14 +2,34 @@
 #define ICONMENU_H
 
 #include <QWidget>
+#include "iconbutton.h"
 
-class IconMenu : public QWidget
+class Menu;
+
+class MenuOverlay : public QWidget
 {
     Q_OBJECT
 
 public:
-    explicit IconMenu(QWidget *parent = 0);
+    explicit MenuOverlay(QWidget *parent = 0);
+    ~MenuOverlay();
+};
+
+class IconMenu : public IconButton
+{
+    Q_OBJECT
+
+public:
+    explicit IconMenu(const QIcon &icon, QWidget *parent = 0);
     ~IconMenu();
+
+protected:
+    bool event(QEvent *event) Q_DECL_OVERRIDE;
+
+private:
+    MenuOverlay   *const _overlay;
+    QWidget       *_geometryWidget;
+    Menu          *const _menu;
 };
 
 #endif // ICONMENU_H

examples/iconmenuexamples.cpp

@@ -1,5 +1,6 @@
 #include <QLayout>
 #include <QEvent>
+#include <QIcon>
 #include "iconmenuexamples.h"
 #include "components/iconmenu.h"
 #include "exampleview.h"
@@ -11,7 +12,7 @@ IconMenuExamples::IconMenuExamples(QWidget *parent)
     QLayout *layout = widget()->layout();
 
     {
-        IconMenu *iconMenu = new IconMenu;
+        IconMenu *iconMenu = new IconMenu(QIcon("../qt-material-widgets/face.svg"));
 
         ExampleView *view = new ExampleView;
         view->setWidget(iconMenu);