update examples now that we get both touch and mouse events at the same time

added a new example to show how to enable touch for an existing widget (QDial in this case), and that
the mouse event emulation of QWidget does the Right Thing (tm)

5 files changed, 100 insertions, 7 deletions

diff --git a/examples/multitouch/dials/dials.pro b/examples/multitouch/dials/dials.pro
new file mode 100644
index 0000000..e592232
--- /dev/null
+++ b/examples/multitouch/dials/dials.pro
@@ -0,0 +1,2 @@
+SOURCES += main.cpp
+FORMS += dials.ui
diff --git a/examples/multitouch/dials/dials.ui b/examples/multitouch/dials/dials.ui
new file mode 100644
index 0000000..8ca7ae9
--- /dev/null
+++ b/examples/multitouch/dials/dials.ui
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>Dials</class>
+ <widget class="QWidget" name="Dials">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QGridLayout" name="gridLayout">
+   <item row="0" column="0">
+    <widget class="QDial" name="dial_1">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="1">
+    <widget class="QDial" name="dial_2">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="2">
+    <widget class="QDial" name="dial_3">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="0" column="3">
+    <widget class="QDial" name="dial_4">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="0">
+    <widget class="QDial" name="dial_5">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="1">
+    <widget class="QDial" name="dial_6">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="2">
+    <widget class="QDial" name="dial_7">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="1" column="3">
+    <widget class="QDial" name="dial_8">
+     <property name="notchesVisible">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>
diff --git a/examples/multitouch/dials/main.cpp b/examples/multitouch/dials/main.cpp
new file mode 100644
index 0000000..f4d3e83
--- /dev/null
+++ b/examples/multitouch/dials/main.cpp
@@ -0,0 +1,18 @@
+#include <QApplication>
+#include <QWidget>
+#include <QDial>
+
+#include "ui_dials.h"
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+    QWidget window;
+    Ui::Dials dialsUi;
+    dialsUi.setupUi(&window);    
+    QList<QAbstractSlider *> sliders = window.findChildren<QAbstractSlider *>();
+    foreach (QAbstractSlider *slider, sliders)
+        slider->setAttribute(Qt::WA_AcceptTouchEvents);
+    window.showMaximized();
+    return app.exec();
+}
diff --git a/examples/multitouch/multitouch.pro b/examples/multitouch/multitouch.pro
index b3d1d55..d5983eb 100644
--- a/examples/multitouch/multitouch.pro
+++ b/examples/multitouch/multitouch.pro
@@ -1,2 +1,2 @@
 TEMPLATE = subdirs
-SUBDIRS = pinchzoom fingerpaint knobs
+SUBDIRS = pinchzoom fingerpaint knobs dials
diff --git a/examples/multitouch/pinchzoom/graphicsview.cpp b/examples/multitouch/pinchzoom/graphicsview.cpp
index b72da77..9d29a28 100644
--- a/examples/multitouch/pinchzoom/graphicsview.cpp
+++ b/examples/multitouch/pinchzoom/graphicsview.cpp
@@ -48,6 +48,7 @@ GraphicsView::GraphicsView(QGraphicsScene *scene, QWidget *parent)
     : QGraphicsView(scene, parent)
 {
     setAttribute(Qt::WA_AcceptTouchEvents);
+    setDragMode(ScrollHandDrag);
 }
 
 bool GraphicsView::event(QEvent *event)
@@ -58,12 +59,7 @@ bool GraphicsView::event(QEvent *event)
     case QEvent::TouchEnd:
     {
         QList<QTouchEvent::TouchPoint> touchPoints = static_cast<QTouchEvent *>(event)->touchPoints();
-        if (touchPoints.count() == 1) {
-            const QTouchEvent::TouchPoint &touchPoint = touchPoints.first();
-            QPointF delta = touchPoint.pos() - touchPoint.lastPos();
-            horizontalScrollBar()->setValue(horizontalScrollBar()->value() - delta.x());
-            verticalScrollBar()->setValue(verticalScrollBar()->value() - delta.y());
-        } else if (touchPoints.count() == 2) {
+        if (touchPoints.count() == 2) {
             // determine scale factor
             const QTouchEvent::TouchPoint &touchPoint0 = touchPoints.first();
             const QTouchEvent::TouchPoint &touchPoint1 = touchPoints.last();