Some work with the enabled property.

Basics are there, mouse events aren't delivered at all to a disabled item.
The appearance isn't quite correct though.

2 files changed, 29 insertions, 7 deletions

diff --git a/example/simple/main.cpp b/example/simple/main.cpp
index 2b19edd..ea9fc86 100644
--- a/example/simple/main.cpp
+++ b/example/simple/main.cpp
@@ -1,5 +1,6 @@
 #include <QtGui/QApplication>
 #include <QtGui/QWidget>
+#include <QtGui/QCheckBox>
 #include <QtGui/QVBoxLayout>
 #include "qtsegmentcontrol.h"
 
@@ -9,10 +10,12 @@ class MyWindow : public QWidget
 public:
     MyWindow() {
         controller = new QtSegmentControl();
-        controller->setCount(3);
+        controller->setCount(4);
         controller->setSegmentText(0, tr("Select One"));
         controller->setSegmentText(1, tr("Select All"));
         controller->setSegmentText(2, tr("Select None"));
+        controller->setSegmentText(3, tr("Permanently Disabled"));
+        controller->setSegmentEnabled(3, false);
         controller->setSelectionBehavior(QtSegmentControl::SelectOne);
         connect(controller, SIGNAL(segmentSelected(int)), this, SLOT(updateBehavior(int)));
         segmentControl = new QtSegmentControl();
@@ -24,9 +27,14 @@ public:
         segmentControl->setSegmentText(4, "Maggie");
         controller->setSegmentSelected(0, true);
 
+        QCheckBox *button = new QCheckBox(tr("Disable Bart"));
+        button->setChecked(false);
+        connect(button, SIGNAL(toggled(bool)), SLOT(updateBart(bool)));
+
         QVBoxLayout *vboxlayout = new QVBoxLayout();
         vboxlayout->addWidget(controller);
         vboxlayout->addWidget(segmentControl);
+        vboxlayout->addWidget(button);
         setLayout(vboxlayout);
     }
 
@@ -35,6 +43,10 @@ private slots:
         segmentControl->setSelectionBehavior(QtSegmentControl::SelectionBehavior(newOne));
     }
 
+    void updateBart(bool enabled) {
+        segmentControl->setSegmentEnabled(2, !enabled);
+    }
+
 private:
     QtSegmentControl *controller;
     QtSegmentControl *segmentControl;
diff --git a/src/qtsegmentcontrol.cpp b/src/qtsegmentcontrol.cpp
index 617f54a..762b40f 100644
--- a/src/qtsegmentcontrol.cpp
+++ b/src/qtsegmentcontrol.cpp
@@ -1,6 +1,8 @@
+#include <QtGui/QApplication>
 #include <QtGui/QIcon>
 #include <QtGui/QMenu>
 #include <QtGui/QPainter>
+#include <QtGui/QStyle>
 #include <QtGui/QStyleOption>
 #include <QtGui/QMouseEvent>
 #include <QtCore/QDebug>
@@ -120,7 +122,8 @@ static void drawSegmentControlSegmentLabel(const QStyleOption *option, QPainter
 {
     if (const QtStyleOptionSegmentControlSegment *segment
             = static_cast<const QtStyleOptionSegmentControlSegment *>(option)) {
-        painter->drawText(segment->rect, Qt::AlignCenter, segment->text);
+        qApp->style()->drawItemText(painter, segment->rect, Qt::AlignCenter, segment->palette,
+                                    segment->state & QStyle::State_Enabled, segment->text);
     }
 
 }
@@ -416,7 +419,7 @@ int QtSegmentControl::segmentAt(const QPoint &pos) const
     const int segmentCount = d->segments.count();
     for (int i = 0; i < segmentCount; ++i) {
         QRect rect = segmentRect(i);
-        if (rect.contains(pos))
+        if (rect.contains(pos) && d->segments.at(i).enabled)
             return i;
     }
     return -1;
@@ -437,8 +440,11 @@ void QtSegmentControl::paintEvent(QPaintEvent *)
 
 void QtSegmentControl::mousePressEvent(QMouseEvent *event)
 {
-    d->wasPressed = d->pressedIndex = segmentAt(event->pos());
-    d->postUpdate(d->pressedIndex);
+    int segmentIndex = segmentAt(event->pos());
+    if (segmentIndex != -1) {
+        d->wasPressed = d->pressedIndex = segmentAt(event->pos());
+        d->postUpdate(d->pressedIndex);
+    }
 }
 
 void QtSegmentControl::mouseMoveEvent(QMouseEvent *event)
@@ -456,6 +462,8 @@ void QtSegmentControl::mouseMoveEvent(QMouseEvent *event)
 void QtSegmentControl::mouseReleaseEvent(QMouseEvent *event)
 {
     int index = segmentAt(event->pos());
+    if (index == -1)
+        return;
     // This order of reset is important.
     d->pressedIndex = -1;
     if (index == d->wasPressed && d->selectionBehavior != SelectNone) {
@@ -504,9 +512,11 @@ void QtSegmentControl::initStyleOption(int segment, QStyleOption *option) const
         } else {
             sgi->position = QtStyleOptionSegmentControlSegment::Middle;
         }
-        if (segmentInfo.selected) {
+
+        if (segmentInfo.selected)
             sgi->state |= QStyle::State_Selected;
-        }
+        if (!segmentInfo.enabled)
+            sgi->state &= ~QStyle::State_Enabled;
 
         if (d->selectionBehavior != QtSegmentControl::SelectNone) {
             sgi->selectedPositions = QtStyleOptionSegmentControlSegment::NotAdjacent;