Merge remote-tracking branch 'origin/5.5' into 5.6

Conflicts:
	src/corelib/io/qstorageinfo_unix.cpp
	src/plugins/platforms/windows/qwindowsmousehandler.cpp
	src/widgets/styles/qwindowsvistastyle.cpp

Change-Id: Ie1725933815891cc8c86258d4c0e8ed0ab386edf

7 files changed, 83 insertions, 25 deletions

diff --git a/src/plugins/platforms/android/qandroidplatformservices.cpp b/src/plugins/platforms/android/qandroidplatformservices.cpp
index 2dba6c78e1..412e3e0466 100644
--- a/src/plugins/platforms/android/qandroidplatformservices.cpp
+++ b/src/plugins/platforms/android/qandroidplatformservices.cpp
@@ -33,8 +33,9 @@
 
 #include "qandroidplatformservices.h"
 #include <QUrl>
-#include <QDir>
+#include <QFile>
 #include <QDebug>
+#include <QMimeDatabase>
 #include <QtCore/private/qjni_p.h>
 
 QT_BEGIN_NAMESPACE
@@ -43,13 +44,27 @@ QAndroidPlatformServices::QAndroidPlatformServices()
 {
 }
 
-bool QAndroidPlatformServices::openUrl(const QUrl &url)
+bool QAndroidPlatformServices::openUrl(const QUrl &theUrl)
 {
+    QString mime;
+    QUrl url(theUrl);
+
+    // if the file is local, we need to pass the MIME type, otherwise Android
+    // does not start an Intent to view this file
+    if ((url.scheme().isEmpty() && QFile::exists(url.path())) || url.isLocalFile()) {
+        // a real URL including the scheme is needed, else the Intent can not be started
+        url.setScheme(QLatin1String("file"));
+
+        QMimeDatabase mimeDb;
+        mime = mimeDb.mimeTypeForUrl(url).name();
+    }
+
     QJNIObjectPrivate urlString = QJNIObjectPrivate::fromString(url.toString());
+    QJNIObjectPrivate mimeString = QJNIObjectPrivate::fromString(mime);
     return QJNIObjectPrivate::callStaticMethod<jboolean>(QtAndroid::applicationClass(),
                                                          "openURL",
-                                                         "(Ljava/lang/String;)Z",
-                                                         urlString.object());
+                                                         "(Ljava/lang/String;Ljava/lang/String;)Z",
+                                                         urlString.object(), mimeString.object());
 }
 
 bool QAndroidPlatformServices::openDocument(const QUrl &url)
diff --git a/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm b/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm
index 28f3b2af84..b55393c7dc 100644
--- a/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm
+++ b/src/plugins/platforms/cocoa/qcocoaaccessibilityelement.mm
@@ -56,6 +56,14 @@ static void convertLineOffset(QAccessibleTextInterface *text, int &line, int &of
     do {
         curStart = curEnd;
         text->textAtOffset(curStart, QAccessible::LineBoundary, &curStart, &curEnd);
+        // If the text is empty then we just return
+        if (curStart == -1 || curEnd == -1) {
+            if (start)
+                *start = 0;
+            if (end)
+                *end = 0;
+            return;
+        }
         ++curLine;
         {
             // check for a case where a single word longer than the text edit's width and gets wrapped
diff --git a/src/plugins/platforms/windows/qwindowscontext.cpp b/src/plugins/platforms/windows/qwindowscontext.cpp
index 4d18e7ea58..02accfae01 100644
--- a/src/plugins/platforms/windows/qwindowscontext.cpp
+++ b/src/plugins/platforms/windows/qwindowscontext.cpp
@@ -201,12 +201,14 @@ void QWindowsUser32DLL::init()
 
 bool QWindowsUser32DLL::initTouch()
 {
-    QSystemLibrary library(QStringLiteral("user32"));
-    isTouchWindow = (IsTouchWindow)(library.resolve("IsTouchWindow"));
-    registerTouchWindow = (RegisterTouchWindow)(library.resolve("RegisterTouchWindow"));
-    unregisterTouchWindow = (UnregisterTouchWindow)(library.resolve("UnregisterTouchWindow"));
-    getTouchInputInfo = (GetTouchInputInfo)(library.resolve("GetTouchInputInfo"));
-    closeTouchInputHandle = (CloseTouchInputHandle)(library.resolve("CloseTouchInputHandle"));
+    if (!isTouchWindow && QSysInfo::windowsVersion() >= QSysInfo::WV_WINDOWS7) {
+        QSystemLibrary library(QStringLiteral("user32"));
+        isTouchWindow = (IsTouchWindow)(library.resolve("IsTouchWindow"));
+        registerTouchWindow = (RegisterTouchWindow)(library.resolve("RegisterTouchWindow"));
+        unregisterTouchWindow = (UnregisterTouchWindow)(library.resolve("UnregisterTouchWindow"));
+        getTouchInputInfo = (GetTouchInputInfo)(library.resolve("GetTouchInputInfo"));
+        closeTouchInputHandle = (CloseTouchInputHandle)(library.resolve("CloseTouchInputHandle"));
+    }
     return isTouchWindow && registerTouchWindow && unregisterTouchWindow && getTouchInputInfo && closeTouchInputHandle;
 }
 
@@ -359,6 +361,36 @@ QWindowsContext::~QWindowsContext()
     m_instance = 0;
 }
 
+bool QWindowsContext::initTouch()
+{
+    return initTouch(QWindowsIntegration::instance()->options());
+}
+
+bool QWindowsContext::initTouch(unsigned integrationOptions)
+{
+    if (d->m_systemInfo & QWindowsContext::SI_SupportsTouch)
+        return true;
+
+    QTouchDevice *touchDevice = d->m_mouseHandler.ensureTouchDevice();
+    if (!touchDevice)
+        return false;
+
+#ifndef Q_OS_WINCE
+    if (!QWindowsContext::user32dll.initTouch()) {
+        delete touchDevice;
+        return false;
+    }
+#endif // !Q_OS_WINCE
+
+    if (!(integrationOptions & QWindowsIntegration::DontPassOsMouseEventsSynthesizedFromTouch))
+        touchDevice->setCapabilities(touchDevice->capabilities() | QTouchDevice::MouseEmulation);
+
+    QWindowSystemInterface::registerTouchDevice(touchDevice);
+
+    d->m_systemInfo |= QWindowsContext::SI_SupportsTouch;
+    return true;
+}
+
 void QWindowsContext::setTabletAbsoluteRange(int a)
 {
 #if !defined(QT_NO_TABLETEVENT) && !defined(Q_OS_WINCE)
diff --git a/src/plugins/platforms/windows/qwindowscontext.h b/src/plugins/platforms/windows/qwindowscontext.h
index d2a3481b28..641e3ed41f 100644
--- a/src/plugins/platforms/windows/qwindowscontext.h
+++ b/src/plugins/platforms/windows/qwindowscontext.h
@@ -170,6 +170,9 @@ public:
     explicit QWindowsContext();
     ~QWindowsContext();
 
+    bool initTouch();
+    bool initTouch(unsigned integrationOptions); // For calls from QWindowsIntegration::QWindowsIntegration() only.
+
     int defaultDPI() const;
 
     QString registerWindowClass(const QWindow *w);
diff --git a/src/plugins/platforms/windows/qwindowsintegration.cpp b/src/plugins/platforms/windows/qwindowsintegration.cpp
index bbb1f68a52..b67e0b859f 100644
--- a/src/plugins/platforms/windows/qwindowsintegration.cpp
+++ b/src/plugins/platforms/windows/qwindowsintegration.cpp
@@ -226,17 +226,7 @@ QWindowsIntegrationPrivate::QWindowsIntegrationPrivate(const QStringList &paramL
     qCDebug(lcQpaWindows)
         << __FUNCTION__ << "DpiAwareness=" << dpiAwareness;
 
-    QTouchDevice *touchDevice = m_context.touchDevice();
-    if (touchDevice) {
-#ifdef Q_OS_WINCE
-        touchDevice->setCapabilities(touchDevice->capabilities() | QTouchDevice::MouseEmulation);
-#else
-        if (!(m_options & QWindowsIntegration::DontPassOsMouseEventsSynthesizedFromTouch)) {
-            touchDevice->setCapabilities(touchDevice->capabilities() | QTouchDevice::MouseEmulation);
-        }
-#endif
-        QWindowSystemInterface::registerTouchDevice(touchDevice);
-    }
+    m_context.initTouch(m_options);
 }
 
 QWindowsIntegrationPrivate::~QWindowsIntegrationPrivate()
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.cpp b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
index 90cb6fe195..e26010b5c4 100644
--- a/src/plugins/platforms/windows/qwindowsmousehandler.cpp
+++ b/src/plugins/platforms/windows/qwindowsmousehandler.cpp
@@ -150,12 +150,19 @@ static inline QTouchDevice *createTouchDevice()
 QWindowsMouseHandler::QWindowsMouseHandler() :
     m_windowUnderMouse(0),
     m_trackedWindow(0),
-    m_touchDevice(createTouchDevice()),
+    m_touchDevice(Q_NULLPTR),
     m_leftButtonDown(false),
     m_previousCaptureWindow(0)
 {
 }
 
+QTouchDevice *QWindowsMouseHandler::ensureTouchDevice()
+{
+    if (!m_touchDevice)
+        m_touchDevice = createTouchDevice();
+    return m_touchDevice;
+}
+
 Qt::MouseButtons QWindowsMouseHandler::queryMouseButtons()
 {
     Qt::MouseButtons result = 0;
@@ -476,7 +483,11 @@ bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
     typedef QWindowSystemInterface::TouchPoint QTouchPoint;
     typedef QList<QWindowSystemInterface::TouchPoint> QTouchPointList;
 
-    Q_ASSERT(m_touchDevice);
+    if (!QWindowsContext::instance()->initTouch()) {
+        qWarning("Unable to initialize touch handling.");
+        return true;
+    }
+
     const QScreen *screen = window->screen();
     if (!screen)
         screen = QGuiApplication::primaryScreen();
@@ -492,8 +503,6 @@ bool QWindowsMouseHandler::translateTouchEvent(QWindow *window, HWND,
     touchPoints.reserve(winTouchPointCount);
     Qt::TouchPointStates allStates = 0;
 
-    Q_ASSERT(QWindowsContext::user32dll.getTouchInputInfo);
-
     QWindowsContext::user32dll.getTouchInputInfo((HANDLE) msg.lParam, msg.wParam, winTouchInputs.data(), sizeof(TOUCHINPUT));
     for (int i = 0; i < winTouchPointCount; ++i) {
         const TOUCHINPUT &winTouchInput = winTouchInputs[i];
diff --git a/src/plugins/platforms/windows/qwindowsmousehandler.h b/src/plugins/platforms/windows/qwindowsmousehandler.h
index 61aa8d6084..4b5078567d 100644
--- a/src/plugins/platforms/windows/qwindowsmousehandler.h
+++ b/src/plugins/platforms/windows/qwindowsmousehandler.h
@@ -52,6 +52,7 @@ public:
     QWindowsMouseHandler();
 
     QTouchDevice *touchDevice() const { return m_touchDevice; }
+    QTouchDevice *ensureTouchDevice();
 
     bool translateMouseEvent(QWindow *widget, HWND hwnd,
                              QtWindows::WindowsEventType t, MSG msg,