make Style class singleton

components/flatbutton.cpp

@@ -3,11 +3,13 @@
 #include <QMouseEvent>
 #include <QApplication>
 #include "flatbutton.h"
+#include "style.h"
 
 FlatButton::FlatButton(QWidget *parent)
     : QAbstractButton(parent),
       _overlay(new RippleOverlay(this))
 {
+    setStyle(&Style::instance());
 }
 
 FlatButton::FlatButton(const QString &text, QWidget *parent)
@@ -15,6 +17,7 @@ FlatButton::FlatButton(const QString &text, QWidget *parent)
       _overlay(new RippleOverlay(this))
 {
     setText(text);
+    setStyle(&Style::instance());
 }
 
 FlatButton::~FlatButton()
@@ -51,8 +54,8 @@ QSize FlatButton::sizeHint() const
         w += sz.width();
     if (!empty || !h)
         h = qMax(h, sz.height());
-    return (style()->sizeFromContents(QStyle::CT_PushButton, &option, QSize(w, h), this).
+    return (style()->sizeFromContents(QStyle::CT_PushButton, &option, QSize(w, h), this)
-            expandedTo(QApplication::globalStrut()));
+           .expandedTo(QApplication::globalStrut()));
 }
 
 void FlatButton::resizeEvent(QResizeEvent *event)
@@ -68,11 +71,9 @@ void FlatButton::paintEvent(QPaintEvent *event)
 
     QStylePainter painter(this);
 
-    QStyleOptionButton option(getStyleOption());
+    painter.drawControl(QStyle::CE_PushButton, getStyleOption());
 
-    painter.drawControl(QStyle::CE_PushButton, option);
+    if (testAttribute(Qt::WA_Hover) && underMouse()) {
-
-    if (underMouse()) {
         QRect r(rect());
         QBrush brush;
         brush.setStyle(Qt::SolidPattern);

components/iconbutton.cpp

@@ -5,6 +5,7 @@
 #include <QDebug>
 #include "iconbutton.h"
 #include "../lib/rippleoverlay.h"
+#include "style.h"
 
 IconButton::IconButton(const QIcon &icon, QWidget *parent)
     : QAbstractButton(parent),
@@ -18,6 +19,8 @@ IconButton::IconButton(const QIcon &icon, QWidget *parent)
     setSizePolicy(policy);
 
     setGeometryWidget(this);
+
+    setStyle(&Style::instance());
 }
 
 IconButton::~IconButton()

components/table.cpp

@@ -2,6 +2,7 @@
 #include <QEvent>
 #include <QHeaderView>
 #include "table.h"
+#include "style.h"
 
 Table::Table(QWidget *parent)
     : QTableWidget(parent)
@@ -10,6 +11,8 @@ Table::Table(QWidget *parent)
     setSelectionMode(QAbstractItemView::SingleSelection);
     setSelectionBehavior(QAbstractItemView::SelectRows);
     setVerticalScrollMode(QAbstractItemView::ScrollPerPixel);
+
+    setStyle(&Style::instance());
 }
 
 Table::~Table()

style.cpp

@@ -1,17 +1,9 @@
 #include <QDebug>
 #include <QPainter>
 #include <QStyleOption>
+#include <QStyleOptionButton>
 #include "style.h"
 
-Style::Style()
-    : QProxyStyle()
-{
-}
-
-Style::~Style()
-{
-}
-
 void Style::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter *p,
                           const QWidget *w) const
 {
@@ -20,7 +12,7 @@ void Style::drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter
     switch (pe) {
     case PE_FrameFocusRect:
         p->setPen(Qt::blue);
-        p->drawRect(opt->rect);
+        p->drawRect(opt->rect.adjusted(0, 0, -1, -1));
         break;
     default:
         QProxyStyle::drawPrimitive(pe, opt, p, w);
@@ -33,6 +25,12 @@ void Style::drawControl(ControlElement element, const QStyleOption *opt,
     qDebug() << element;
 
     switch (element) {
+    case CE_CheckBox:
+        if (const QStyleOptionButton *item = qstyleoption_cast<const QStyleOptionButton *>(opt)) {
+
+        }
+        p->fillRect(opt->rect, Qt::black);
+        break;
     /*
     case CE_FocusFrame:
         p->fillRect(opt->rect, opt->palette.foreground());

style.h

@@ -3,14 +3,16 @@
 
 #include <QProxyStyle>
 
-//class Style : public QCommonStyle
 class Style : public QProxyStyle
 {
     Q_OBJECT
 
 public:
-    Style();
+    static Style &instance()
-    ~Style();
+    {
+        static Style instance;
+        return instance;
+    }
 
     void drawPrimitive(PrimitiveElement pe, const QStyleOption *opt, QPainter *p,
                        const QWidget *w = 0) const Q_DECL_OVERRIDE;
@@ -24,7 +26,12 @@ public:
                          const QWidget *w = 0) const Q_DECL_OVERRIDE;
 
     int pixelMetric(PixelMetric m, const QStyleOption *opt = 0, const QWidget *widget = 0) const Q_DECL_OVERRIDE;
+
+private:
+    Style() {}
+
+    Style(Style const&);
+    void operator=(Style const&);
 };
 
-
 #endif // STYLE_H