From 9ddb4d6fb02b111c7311954aff03c156ffb22b9a Mon Sep 17 00:00:00 2001
From: laserpants <johannes@isomorphic.co>
Date: Sat, 11 Jun 2016 18:43:33 +0300
Subject: [PATCH] shade inactive tabs

---
 components/tabs.cpp          |  9 ++++++++-
 components/tabs_internal.cpp | 32 ++++++++++++++++++++++----------
 components/tabs_internal.h   |  5 +++++
 qt-material-widgets.pro      |  2 +-
 4 files changed, 36 insertions(+), 12 deletions(-)

diff --git a/components/tabs.cpp b/components/tabs.cpp
index 79bf6ad..9461b11 100644
--- a/components/tabs.cpp
+++ b/components/tabs.cpp
@@ -135,7 +135,7 @@ void Tabs::addTab(const QString &text, const QIcon &icon)
 
     Tab *tab = createTab(text);
     tab->setIcon(icon);
-    tab->setIconSize(QSize(24, 24));
+    tab->setIconSize(QSize(22, 22));
 }
 
 void Tabs::setRippleStyle(Material::RippleStyle style)
@@ -188,8 +188,14 @@ void Tabs::switchTab()
 {
     Q_D(Tabs);
 
+    Tab *oldTab = static_cast<Tab *>(d->tabLayout->itemAt(d->tab)->widget());
+    if (oldTab) {
+        oldTab->setActive(false);
+    }
+
     Tab *tab = static_cast<Tab *>(sender());
     if (tab) {
+        tab->setActive(true);
         d->tab = d->tabLayout->indexOf(tab);
         d->inkBar->animate();
         emit currentChanged(d->tab);
@@ -212,6 +218,7 @@ Tab *Tabs::createTab(const QString &text)
     if (-1 == d->tab) {
         d->tab = 0;
         d->inkBar->refreshGeometry();
+        tab->setActive(true);
     }
 
     connect(tab, SIGNAL(clicked()), this, SLOT(switchTab()));
diff --git a/components/tabs_internal.cpp b/components/tabs_internal.cpp
index 5ce54ab..3e82457 100644
--- a/components/tabs_internal.cpp
+++ b/components/tabs_internal.cpp
@@ -6,7 +6,6 @@
 #include <QEvent>
 #include <QDebug>
 #include <QPropertyAnimation>
-#include <QtSvg/QSvgRenderer>
 #include "tabs.h"
 
 TabsInkBar::TabsInkBar(Tabs *parent)
@@ -110,7 +109,7 @@ QSize Tab::sizeHint() const
     if (icon().isNull()) {
         return FlatButton::sizeHint();
     } else {
-        return QSize(40, iconSize().height() + 48);
+        return QSize(40, iconSize().height() + 46);
     }
 }
 
@@ -134,28 +133,41 @@ void Tab::paintEvent(QPaintEvent *event)
     QStylePainter style(this);
 
     if (!icon().isNull()) {
-        style.translate(0, 10);
+        style.translate(0, 12);
     }
 
     QStyleOptionButton option;
     initStyleOption(&option);
     option.features |= QStyleOptionButton::Flat;
-    option.iconSize = QSize(-1, -1);  // Let's not draw the icon right now
+    option.iconSize = QSize(-1, -1);  // Prevent icon from being drawn twice
 
     style.drawControl(QStyle::CE_PushButtonLabel, option);
 
     if (!icon().isNull()) {
         const QSize &size = iconSize();
-        QRect iconPos(QPoint((width()-size.width())/2, 0), size);
-        icon().paint(&painter, iconPos, Qt::AlignCenter, QIcon::Normal);
+        QRect iconRect(QPoint((width()-size.width())/2, 0), size);
+        icon().paint(&painter, iconRect, Qt::AlignCenter, QIcon::Normal);
     }
 
+    if (!_active) {
+        QColor overlayColor = backgroundColor();
+        overlayColor.setAlphaF(0.36);
+
+        QBrush overlay;
+        overlay.setStyle(Qt::SolidPattern);
+        overlay.setColor(overlayColor);
+        painter.fillRect(rect(), overlay);
+    }
+
+#ifdef DEBUG_LAYOUT
+    QPainter debug(this);
     QPen pen;
     pen.setColor(Qt::red);
-    pen.setWidth(5);
-    painter.setPen(pen);
-    painter.setBrush(Qt::NoBrush);
-    painter.drawRect(rect());
+    pen.setWidth(2);
+    debug.setPen(pen);
+    debug.setBrush(Qt::NoBrush);
+    debug.drawRect(rect());
+#endif
 }
 
 void Tab::init()
diff --git a/components/tabs_internal.h b/components/tabs_internal.h
index facae34..b393c03 100644
--- a/components/tabs_internal.h
+++ b/components/tabs_internal.h
@@ -45,6 +45,9 @@ public:
     explicit Tab(QString text, QWidget *parent = 0);
     ~Tab();
 
+    inline void setActive(bool state) { _active = state; update(); }
+    inline bool isActive() const { return _active; }
+
     QSize sizeHint() const Q_DECL_OVERRIDE;
 
 protected:
@@ -54,6 +57,8 @@ private:
     Q_DISABLE_COPY(Tab)
 
     void init();
+
+    bool _active;
 };
 
 #endif // TABS_INTERNAL_H
diff --git a/qt-material-widgets.pro b/qt-material-widgets.pro
index de25fec..27006a5 100644
--- a/qt-material-widgets.pro
+++ b/qt-material-widgets.pro
@@ -1,4 +1,4 @@
-QT       += core gui qml svg
+QT       += core gui qml
 
 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets