make it possible to center ripple in flat button

components/flatbutton.cpp

@@ -68,6 +68,13 @@ FlatButton::~FlatButton()
 {
 }
 
+void FlatButton::setRippleStyle(RippleStyle style)
+{
+    Q_D(FlatButton);
+
+    d->rippleStyle = style;
+}
+
 void FlatButton::setRole(Material::Role role)
 {
     Q_D(FlatButton);
@@ -163,12 +170,17 @@ void FlatButton::mousePressEvent(QMouseEvent *event)
 {
     Q_D(FlatButton);
 
+    if (FlatButton::NoRipple == d->rippleStyle) {
+        return;
+    }
+
     QColor color = palette().color(QPalette::Active, QPalette::ButtonText);
 
-    Ripple *ripple = new Ripple(event->pos());
+    Ripple *ripple = new Ripple(FlatButton::CenteredRipple == d->rippleStyle
+        ? rect().center() : event->pos());
+
     ripple->setRadiusEndValue(100);
     ripple->setOpacityStartValue(0.4);
-
     ripple->setColor(color);
 
     d->ripple->addRipple(ripple);

components/flatbutton.h

@@ -12,12 +12,20 @@ class FlatButton : public QPushButton
     Q_OBJECT
 
 public:
+    enum RippleStyle {
+        CenteredRipple,
+        PositionedRipple,
+        NoRipple
+    };
+
     explicit FlatButton(QWidget *parent = 0);
     explicit FlatButton(const QString &text, QWidget *parent = 0);
     ~FlatButton();
 
     virtual void setRole(Material::Role role);
 
+    void setRippleStyle(RippleStyle style);
+
 protected:
     FlatButton(FlatButtonPrivate &d, QWidget *parent = 0);
 

components/flatbutton_p.h

@@ -17,7 +17,8 @@ class FlatButtonPrivate
 public:
     FlatButtonPrivate(FlatButton *q)
         : q_ptr(q),
-          role(Material::Default)
+          role(Material::Default),
+          rippleStyle(FlatButton::PositionedRipple)
     {}
 
     void init();
@@ -27,6 +28,7 @@ public:
     RippleOverlay *ripple;
     FlatButtonDelegate *delegate;
     Material::Role role;
+    FlatButton::RippleStyle rippleStyle;
 };
 
 #endif // FLATBUTTON_P_H