Merge branch '4.7' of scm.dev.nokia.troll.no:qt/qt-qml into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/qt-qml: (47 commits)
  Optimize QML "parent" property access
  Begin dragging PathView up to the level (quality and functionality) of other views.
  Rename qdeclarativetime -> qmltime
  Auto-test fix.
  Build Fix and port to new width and height properties
  Port Flickable and Flipable to support QGraphicsObject.
  Protect the QDeclarativeListProperty used in QGraphicsItem with ifdef
  Fix the build due to new properties in QGraphicsObject.
  Remove the children property from QDeclarativeItem.
  Rename qdeclarativetime -> qmltime
  Update AnchorChanges to use more natural form for setting anchors.
  Pen is not a creatable type.
  Begin dragging PathView up to the level (quality and functionality) of other views.
  Fix error reporting when symbian file copy fails.
  Stabilize QGraphicsEffect test on X11
  QIODevice::read() and QFile::atEnd() performance improvements
  Clarified pkg_prerules usage documentation.
  Updated WebKit from /home/shausman/src/webkit/trunk to qtwebkit/qtwebkit-4.6 ( aa40cdb9595eb15a68e7be03322f973aa613a8f9 )
  Made it possible to define more than one language using pkg_prerules
  Symbian QAudioOutput::suspend() was resetting processedUSecs() to zero
  ...

14 files changed, 205 insertions, 11 deletions

diff --git a/src/3rdparty/webkit/.gitattributes b/src/3rdparty/webkit/.gitattributes
new file mode 100644
index 0000000..5b43bd0
--- /dev/null
+++ b/src/3rdparty/webkit/.gitattributes
@@ -0,0 +1,4 @@
+# To enable automatic merging of ChangeLog files, use the following command:
+# git config merge.changelog.driver "resolve-ChangeLogs --merge-driver %O %A %B"
+ChangeLog* merge=changelog
+
diff --git a/src/3rdparty/webkit/ChangeLog b/src/3rdparty/webkit/ChangeLog
index 1e89d1e..57cb0de 100644
--- a/src/3rdparty/webkit/ChangeLog
+++ b/src/3rdparty/webkit/ChangeLog
@@ -1,3 +1,11 @@
+2010-02-18  Tor Arne Vestbø  <tor.arne.vestbo@nokia.com>
+
+        Reviewed by Eric Seidel.
+
+        Add .gitattributes file for custom ChangeLog merge-driver
+
+        * .gitattributes: Added.
+
 2009-11-30  Jan-Arve Sæther  <jan-arve.saether@nokia.com>
 
         Reviewed by Simon Hausmann.
diff --git a/src/3rdparty/webkit/VERSION b/src/3rdparty/webkit/VERSION
index a2d5f37..9dac2f8 100644
--- a/src/3rdparty/webkit/VERSION
+++ b/src/3rdparty/webkit/VERSION
@@ -8,4 +8,4 @@ The commit imported was from the
 
 and has the sha1 checksum
 
-        266a6c4f1938dd9edf4a8125faf91c62495e3ce2
+        aa40cdb9595eb15a68e7be03322f973aa613a8f9
diff --git a/src/3rdparty/webkit/WebCore/ChangeLog b/src/3rdparty/webkit/WebCore/ChangeLog
index a3f70d3..0a444bc 100644
--- a/src/3rdparty/webkit/WebCore/ChangeLog
+++ b/src/3rdparty/webkit/WebCore/ChangeLog
@@ -1,3 +1,61 @@
+2010-03-19  Miikka Heikkinen  <miikka.heikkinen@digia.com>
+
+        Reviewed by Simon Hausmann.
+
+        [Qt] Support for QT_LIBINFIX in Symbian builds
+
+        Configuring Qt with -qtlibinfix parameter will enable installing
+        an alternate version of Qt on devices that already have it on ROM.
+        This patch provides support for infixed builds of Webkit.
+
+        * WebCore.pro:
+
+2010-01-31  Benjamin Poulain  <benjamin.poulain@nokia.com>
+
+        Reviewed by Eric Seidel.
+
+        [Qt] Enable FAST_MOBILE_SCROLLING on Qt embedded platforms
+        https://bugs.webkit.org/show_bug.cgi?id=34168
+
+        Enable FAST_MOBILE_SCROLLING for Qt on Maemo 5, Linux embedded
+        and Symbian
+
+        * WebCore.pro:
+
+2010-01-19  Daniel Bates  <dbates@rim.com>
+
+        Reviewed by Adam Treat.
+
+        https://bugs.webkit.org/show_bug.cgi?id=33408
+
+        Implements an optimization to ignore fixed background images
+        (i.e. background-attachment: fixed) when a page does not contain
+        any fixed position elements so as to allow fast repaints (via bit
+        blit) when scrolling a page.
+
+        Currently, if a page has elements that specify either a fixed
+        background or a fixed position then we perform a slow repaint
+        (i.e disable blitting) so as to avoid rendering artifacts.
+        However, on low-powered/mobile devices slow repaints can cause
+        noticeable delays when scrolling a page with a fixed background
+        image. By sacrificing support for fixed background images when
+        there are no fixed elements on the page and with come care, we
+        don't need to force slow repaints and can avoid rendering artifacts.
+        Hence, on such devices we can improve the responsiveness of
+        scrolling a page with a fixed background image.
+
+        Note, this optimization is only enabled if the WebKit is built
+        with FAST_MOBILE_SCROLLING enabled.
+
+        Tests: fast/fast-mobile-scrolling/fixed-position-element.html
+               fast/fast-mobile-scrolling/no-fixed-position-elements.html
+
+        * rendering/RenderBoxModelObject.cpp:
+        (WebCore::RenderBoxModelObject::calculateBackgroundImageGeometry):
+        Disable fixed background attachment if we can blit on scroll.
+        * rendering/RenderObject.cpp:
+        (WebCore::RenderObject::styleWillChange):
+
 2010-03-11  Simon Hausmann  <simon.hausmann@nokia.com>
 
         Reviewed by Tor Arne Vestbø.
diff --git a/src/3rdparty/webkit/WebCore/WebCore.pro b/src/3rdparty/webkit/WebCore/WebCore.pro
index a80eed4..3a50b1a 100644
--- a/src/3rdparty/webkit/WebCore/WebCore.pro
+++ b/src/3rdparty/webkit/WebCore/WebCore.pro
@@ -6,9 +6,12 @@ symbian: {
     TARGET.EPOCALLOWDLLDATA=1
     TARGET.EPOCHEAPSIZE = 0x20000 0x2000000 // Min 128kB, Max 32MB
     TARGET.CAPABILITY = All -Tcb
-    TARGET.UID3 = 0x200267C2
-
-    webkitlibs.sources = $$QMAKE_LIBDIR_QT/QtWebKit.dll
+    isEmpty(QT_LIBINFIX) {
+        TARGET.UID3 = 0x200267C2
+    } else {
+        TARGET.UID3 = 0xE00267C2
+    }
+    webkitlibs.sources = QtWebKit$${QT_LIBINFIX}.dll
     webkitlibs.path = /sys/bin
     vendorinfo = \
         "; Localised Vendor name" \
@@ -165,6 +168,10 @@ contains(DEFINES, ENABLE_SINGLE_THREADED=1) {
     DEFINES += ENABLE_SVG_FONTS=0 ENABLE_SVG_FOREIGN_OBJECT=0 ENABLE_SVG_ANIMATION=0 ENABLE_SVG_AS_IMAGE=0 ENABLE_SVG_USE=0
 }
 
+mameo5|symbian|embedded {
+    DEFINES += ENABLE_FAST_MOBILE_SCROLLING=1
+}
+
 # HTML5 ruby support
 !contains(DEFINES, ENABLE_RUBY=.): DEFINES += ENABLE_RUBY=1
 
diff --git a/src/3rdparty/webkit/WebCore/page/FrameView.cpp b/src/3rdparty/webkit/WebCore/page/FrameView.cpp
index bc4e4f2..4c3a0ab 100644
--- a/src/3rdparty/webkit/WebCore/page/FrameView.cpp
+++ b/src/3rdparty/webkit/WebCore/page/FrameView.cpp
@@ -106,6 +106,7 @@ struct ScheduledEvent {
 FrameView::FrameView(Frame* frame)
     : m_frame(frame)
     , m_slowRepaintObjectCount(0)
+    , m_fixedObjectCount(0)
     , m_layoutTimer(this, &FrameView::layoutTimerFired)
     , m_layoutRoot(0)
     , m_postLayoutTasksTimer(this, &FrameView::postLayoutTimerFired)
@@ -735,7 +736,7 @@ String FrameView::mediaType() const
 
 bool FrameView::useSlowRepaints() const
 {
-    return m_useSlowRepaints || m_slowRepaintObjectCount > 0 || m_isOverlapped || !m_contentIsOpaque;
+    return m_useSlowRepaints || m_slowRepaintObjectCount > 0 || (platformWidget() && m_fixedObjectCount > 0) || m_isOverlapped || !m_contentIsOpaque;
 }
 
 void FrameView::setUseSlowRepaints()
@@ -759,6 +760,78 @@ void FrameView::removeSlowRepaintObject()
         setCanBlitOnScroll(!useSlowRepaints());
 }
 
+void FrameView::addFixedObject()
+{
+    if (!m_fixedObjectCount && platformWidget())
+        setCanBlitOnScroll(false);
+    ++m_fixedObjectCount;
+}
+
+void FrameView::removeFixedObject()
+{
+    ASSERT(m_fixedObjectCount > 0);
+    m_fixedObjectCount--;
+    if (!m_fixedObjectCount)
+        setCanBlitOnScroll(!useSlowRepaints());
+}
+
+void FrameView::scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect)
+{
+    const size_t fixedObjectThreshold = 5;
+
+    ListHashSet<RenderBox*>* positionedObjects = 0;
+    if (RenderView* root = m_frame->contentRenderer())
+        positionedObjects = root->positionedObjects();
+
+    if (!positionedObjects || positionedObjects->isEmpty()) {
+        hostWindow()->scroll(scrollDelta, rectToScroll, clipRect);
+        return;
+    }
+
+    // Get the rects of the fixed objects visible in the rectToScroll
+    Vector<IntRect, fixedObjectThreshold> subRectToUpdate;
+    bool updateInvalidatedSubRect = true;
+    ListHashSet<RenderBox*>::const_iterator end = positionedObjects->end();
+    for (ListHashSet<RenderBox*>::const_iterator it = positionedObjects->begin(); it != end; ++it) {
+        RenderBox* renderBox = *it;
+        if (renderBox->style()->position() != FixedPosition)
+            continue;
+        IntRect topLevelRect;
+        IntRect updateRect = renderBox->paintingRootRect(topLevelRect);
+        updateRect.move(-scrollX(), -scrollY());
+        updateRect.intersect(rectToScroll);
+        if (!updateRect.isEmpty()) {
+            if (subRectToUpdate.size() >= fixedObjectThreshold) {
+                updateInvalidatedSubRect = false;
+                break;
+            }
+            subRectToUpdate.append(updateRect);
+        }
+    }
+
+    // Scroll the view
+    if (updateInvalidatedSubRect) {
+        // 1) scroll
+        hostWindow()->scroll(scrollDelta, rectToScroll, clipRect);
+
+        // 2) update the area of fixed objets that has been invalidated
+        size_t fixObjectsCount = subRectToUpdate.size();
+        for (size_t i = 0; i < fixObjectsCount; ++i) {
+            IntRect updateRect = subRectToUpdate[i];
+            IntRect scrolledRect = updateRect;
+            scrolledRect.move(scrollDelta);
+            updateRect.unite(scrolledRect);
+            updateRect.intersect(rectToScroll);
+            hostWindow()->repaint(updateRect, true, false, true);
+        }
+    } else {
+        // the number of fixed objects exceed the threshold, so we repaint everything.
+        IntRect updateRect = clipRect;
+        updateRect.intersect(rectToScroll);
+        hostWindow()->repaint(updateRect, true, false, true);
+    }
+}
+
 void FrameView::setIsOverlapped(bool isOverlapped)
 {
     if (isOverlapped == m_isOverlapped)
diff --git a/src/3rdparty/webkit/WebCore/page/FrameView.h b/src/3rdparty/webkit/WebCore/page/FrameView.h
index 3d17d2c..5243c02 100644
--- a/src/3rdparty/webkit/WebCore/page/FrameView.h
+++ b/src/3rdparty/webkit/WebCore/page/FrameView.h
@@ -143,6 +143,9 @@ public:
     void addSlowRepaintObject();
     void removeSlowRepaintObject();
 
+    void addFixedObject();
+    void removeFixedObject();
+
     void beginDeferredRepaints();
     void endDeferredRepaints();
     void checkStopDelayingDeferredRepaints();
@@ -196,6 +199,9 @@ public:
     bool isFrameViewScrollCorner(RenderScrollbarPart* scrollCorner) const { return m_scrollCorner == scrollCorner; }
     void invalidateScrollCorner();
 
+protected:
+    virtual void scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect);
+
 private:
     FrameView(Frame*);
 
@@ -261,6 +267,7 @@ private:
     bool m_isOverlapped;
     bool m_contentIsOpaque;
     unsigned m_slowRepaintObjectCount;
+    unsigned m_fixedObjectCount;
 
     int m_borderX, m_borderY;
 
diff --git a/src/3rdparty/webkit/WebCore/platform/ScrollView.cpp b/src/3rdparty/webkit/WebCore/platform/ScrollView.cpp
index e67daf9..9e15c43 100644
--- a/src/3rdparty/webkit/WebCore/platform/ScrollView.cpp
+++ b/src/3rdparty/webkit/WebCore/platform/ScrollView.cpp
@@ -509,7 +509,7 @@ void ScrollView::scrollContents(const IntSize& scrollDelta)
 
     if (canBlitOnScroll()) { // The main frame can just blit the WebView window
        // FIXME: Find a way to blit subframes without blitting overlapping content
-       hostWindow()->scroll(-scrollDelta, scrollViewRect, clipRect);
+       scrollContentsFastPath(-scrollDelta, scrollViewRect, clipRect);
     } else { 
        // We need to go ahead and repaint the entire backing store.  Do it now before moving the
        // windowed plugins.
@@ -524,6 +524,11 @@ void ScrollView::scrollContents(const IntSize& scrollDelta)
     hostWindow()->paint();
 }
 
+void ScrollView::scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect)
+{
+    hostWindow()->scroll(scrollDelta, rectToScroll, clipRect);
+}
+
 IntPoint ScrollView::windowToContents(const IntPoint& windowPoint) const
 {
     IntPoint viewPoint = convertFromContainingWindow(windowPoint);
diff --git a/src/3rdparty/webkit/WebCore/platform/ScrollView.h b/src/3rdparty/webkit/WebCore/platform/ScrollView.h
index 5dacff5..7060d07 100644
--- a/src/3rdparty/webkit/WebCore/platform/ScrollView.h
+++ b/src/3rdparty/webkit/WebCore/platform/ScrollView.h
@@ -244,6 +244,9 @@ protected:
     IntRect scrollCornerRect() const;
     virtual void updateScrollCorner();
     virtual void paintScrollCorner(GraphicsContext*, const IntRect& cornerRect);
+
+    // Scroll the content by blitting the pixels
+    virtual void scrollContentsFastPath(const IntSize& scrollDelta, const IntRect& rectToScroll, const IntRect& clipRect);
     
 private:
     RefPtr<Scrollbar> m_horizontalScrollbar;
diff --git a/src/3rdparty/webkit/WebCore/rendering/RenderBlock.h b/src/3rdparty/webkit/WebCore/rendering/RenderBlock.h
index 7ba5fce..3300d01 100644
--- a/src/3rdparty/webkit/WebCore/rendering/RenderBlock.h
+++ b/src/3rdparty/webkit/WebCore/rendering/RenderBlock.h
@@ -75,6 +75,7 @@ public:
     void insertPositionedObject(RenderBox*);
     void removePositionedObject(RenderBox*);
     void removePositionedObjects(RenderBlock*);
+    ListHashSet<RenderBox*>* positionedObjects() const { return m_positionedObjects; }
 
     void addPercentHeightDescendant(RenderBox*);
     static void removePercentHeightDescendant(RenderBox*);
diff --git a/src/3rdparty/webkit/WebCore/rendering/RenderBox.cpp b/src/3rdparty/webkit/WebCore/rendering/RenderBox.cpp
index 1df82a4..7ca2ff8 100644
--- a/src/3rdparty/webkit/WebCore/rendering/RenderBox.cpp
+++ b/src/3rdparty/webkit/WebCore/rendering/RenderBox.cpp
@@ -145,6 +145,16 @@ void RenderBox::styleWillChange(StyleDifference diff, const RenderStyle* newStyl
                 removeFloatingOrPositionedChildFromBlockLists();
         }
     }
+    if (FrameView *frameView = view()->frameView()) {
+        bool newStyleIsFixed = newStyle && newStyle->position() == FixedPosition;
+        bool oldStyleIsFixed = style() && style()->position() == FixedPosition;
+        if (newStyleIsFixed != oldStyleIsFixed) {
+            if (newStyleIsFixed)
+                frameView->addFixedObject();
+            else
+                frameView->removeFixedObject();
+        }
+    }
 
     RenderBoxModelObject::styleWillChange(diff, newStyle);
 }
diff --git a/src/3rdparty/webkit/WebCore/rendering/RenderBoxModelObject.cpp b/src/3rdparty/webkit/WebCore/rendering/RenderBoxModelObject.cpp
index 23dad2d..9d0f1ed 100644
--- a/src/3rdparty/webkit/WebCore/rendering/RenderBoxModelObject.cpp
+++ b/src/3rdparty/webkit/WebCore/rendering/RenderBoxModelObject.cpp
@@ -557,6 +557,17 @@ void RenderBoxModelObject::calculateBackgroundImageGeometry(const FillLayer* fil
     // Determine the background positioning area and set destRect to the background painting area.
     // destRect will be adjusted later if the background is non-repeating.
     bool fixedAttachment = fillLayer->attachment() == FixedBackgroundAttachment;
+
+#if ENABLE(FAST_MOBILE_SCROLLING)
+    if (view()->frameView() && view()->frameView()->canBlitOnScroll()) {
+        // As a side effect of an optimization to blit on scroll, we do not honor the CSS
+        // property "background-attachment: fixed" because it may result in rendering
+        // artifacts. Note, these artifacts only appear if we are blitting on scroll of
+        // a page that has fixed background images.
+        fixedAttachment = false;
+    }
+#endif
+
     if (!fixedAttachment) {
         destRect = IntRect(tx, ty, w, h);
 
diff --git a/src/3rdparty/webkit/WebCore/rendering/RenderObject.cpp b/src/3rdparty/webkit/WebCore/rendering/RenderObject.cpp
index a10ffd9..199de4a 100644
--- a/src/3rdparty/webkit/WebCore/rendering/RenderObject.cpp
+++ b/src/3rdparty/webkit/WebCore/rendering/RenderObject.cpp
@@ -1591,10 +1591,17 @@ void RenderObject::styleWillChange(StyleDifference diff, const RenderStyle* newS
         s_affectsParentBlock = false;
 
     if (view()->frameView()) {
-        // FIXME: A better solution would be to only invalidate the fixed regions when scrolling.  It's overkill to
-        // prevent the entire view from blitting on a scroll.
-        bool newStyleSlowScroll = newStyle && (newStyle->position() == FixedPosition || newStyle->hasFixedBackgroundImage());
-        bool oldStyleSlowScroll = m_style && (m_style->position() == FixedPosition || m_style->hasFixedBackgroundImage());
+        bool shouldBlitOnFixedBackgroundImage = false;
+#if ENABLE(FAST_MOBILE_SCROLLING)
+        // On low-powered/mobile devices, preventing blitting on a scroll can cause noticeable delays
+        // when scrolling a page with a fixed background image. As an optimization, assuming there are
+        // no fixed positoned elements on the page, we can acclerate scrolling (via blitting) if we
+        // ignore the CSS property "background-attachment: fixed".
+        shouldBlitOnFixedBackgroundImage = true;
+#endif
+
+        bool newStyleSlowScroll = newStyle && !shouldBlitOnFixedBackgroundImage && newStyle->hasFixedBackgroundImage();
+        bool oldStyleSlowScroll = m_style && !shouldBlitOnFixedBackgroundImage && m_style->hasFixedBackgroundImage();
         if (oldStyleSlowScroll != newStyleSlowScroll) {
             if (oldStyleSlowScroll)
                 view()->frameView()->removeSlowRepaintObject();
diff --git a/src/3rdparty/webkit/WebKit/qt/Api/qgraphicswebview.h b/src/3rdparty/webkit/WebKit/qt/Api/qgraphicswebview.h
index 68379a2..f983ae4 100644
--- a/src/3rdparty/webkit/WebKit/qt/Api/qgraphicswebview.h
+++ b/src/3rdparty/webkit/WebKit/qt/Api/qgraphicswebview.h
@@ -134,10 +134,10 @@ protected:
 
 private:
     Q_PRIVATE_SLOT(d, void _q_doLoadFinished(bool success))
+    Q_PRIVATE_SLOT(d, void _q_updateMicroFocus())
 
     QGraphicsWebViewPrivate* const d;
     friend class QGraphicsWebViewPrivate;
 };
 
 #endif // QGraphicsWebView_h
-    Q_PRIVATE_SLOT(d, void _q_updateMicroFocus())