Merge branch '4.7' of git://scm.dev.nokia.troll.no/qt/qt-doc-team

* '4.7' of git://scm.dev.nokia.troll.no/qt/qt-doc-team: (329 commits)
  Fixed drawImage() not to attempt drawing null images on openvg.
  QS60Style: Update placeholder texture to real one
  qdoc: Avoid infinite loops in table of contents generation.
  Bump Qt version to 4.7.4
  Return SV_S60_5_2 / SV_SF_3 for next gen Symbian platform.
  Remove incorrect check in qpixmap autotest.
  Change the pooled QGLPixmapData to be backed by QVolatileImage.
  Started changes-4.7.4 file
  Fix endianness detection with gcc 4.6 -flto -fwhole-program
  remove redundand validateModes() call
  Changed s60 style not to rely on QPixmapData::toNativeType().
  Add missing bitmap locking to QVGPixmapData::fromNativeType.
  Don't crash calling QTextDocument::blockBoundingRect on invalid block
  Prepare fromSymbianCFbsBitmap autotest for 16 bpp format.
  Fix writing to an attached property from script.
  fixes/improvements for new QML right-to-left docs
  Fix license headers in example code
  Add flag for forcibly propagating backing store alpha to framebuffer
  Fixed unmatched quotes in s60installs.pro
  Added setSwitchPolicy to MeeGo graphicssystem helper API.
  ...

1 files changed, 160 insertions, 13 deletions

diff --git a/src/declarative/graphicsitems/qdeclarativetextedit.cpp b/src/declarative/graphicsitems/qdeclarativetextedit.cpp
index 7f383a6..2cb1c94 100644
--- a/src/declarative/graphicsitems/qdeclarativetextedit.cpp
+++ b/src/declarative/graphicsitems/qdeclarativetextedit.cpp
@@ -48,6 +48,7 @@
 
 #include <QtCore/qmath.h>
 
+#include <private/qtextengine_p.h>
 #include <QTextLayout>
 #include <QTextLine>
 #include <QTextDocument>
@@ -249,6 +250,7 @@ void QDeclarativeTextEdit::setText(const QString &text)
     Q_D(QDeclarativeTextEdit);
     if (QDeclarativeTextEdit::text() == text)
         return;
+
     d->richText = d->format == RichText || (d->format == AutoText && Qt::mightBeRichText(text));
     if (d->richText) {
 #ifndef QT_NO_TEXTHTMLPARSER
@@ -457,9 +459,12 @@ void QDeclarativeTextEdit::setSelectedTextColor(const QColor &color)
 /*!
     \qmlproperty enumeration TextEdit::horizontalAlignment
     \qmlproperty enumeration TextEdit::verticalAlignment
+    \qmlproperty enumeration TextEdit::effectiveHorizontalAlignment
 
     Sets the horizontal and vertical alignment of the text within the TextEdit item's
-    width and height.  By default, the text is top-left aligned.
+    width and height. By default, the text alignment follows the natural alignment
+    of the text, for example text that is read from left to right will be aligned to
+    the left.
 
     Valid values for \c horizontalAlignment are:
     \list
@@ -473,8 +478,13 @@ void QDeclarativeTextEdit::setSelectedTextColor(const QColor &color)
     \list
     \o TextEdit.AlignTop (default)
     \o TextEdit.AlignBottom
-    \c TextEdit.AlignVCenter
+    \o TextEdit.AlignVCenter
     \endlist
+
+    When using the attached property LayoutMirroring::enabled to mirror application
+    layouts, the horizontal alignment of text will also be mirrored. However, the property
+    \c horizontalAlignment will remain unchanged. To query the effective horizontal alignment
+    of TextEdit, use the read-only property \c effectiveHorizontalAlignment.
 */
 QDeclarativeTextEdit::HAlignment QDeclarativeTextEdit::hAlign() const
 {
@@ -482,15 +492,80 @@ QDeclarativeTextEdit::HAlignment QDeclarativeTextEdit::hAlign() const
     return d->hAlign;
 }
 
-void QDeclarativeTextEdit::setHAlign(QDeclarativeTextEdit::HAlignment alignment)
+void QDeclarativeTextEdit::setHAlign(HAlignment align)
 {
     Q_D(QDeclarativeTextEdit);
-    if (alignment == d->hAlign)
-        return;
-    d->hAlign = alignment;
-    d->updateDefaultTextOption();
-    updateSize();
-    emit horizontalAlignmentChanged(d->hAlign);
+    bool forceAlign = d->hAlignImplicit && d->effectiveLayoutMirror;
+    d->hAlignImplicit = false;
+    if (d->setHAlign(align, forceAlign) && isComponentComplete()) {
+        d->updateDefaultTextOption();
+        updateSize();
+    }
+}
+
+void QDeclarativeTextEdit::resetHAlign()
+{
+    Q_D(QDeclarativeTextEdit);
+    d->hAlignImplicit = true;
+    if (d->determineHorizontalAlignment() && isComponentComplete()) {
+        d->updateDefaultTextOption();
+        updateSize();
+    }
+}
+
+QDeclarativeTextEdit::HAlignment QDeclarativeTextEdit::effectiveHAlign() const
+{
+    Q_D(const QDeclarativeTextEdit);
+    QDeclarativeTextEdit::HAlignment effectiveAlignment = d->hAlign;
+    if (!d->hAlignImplicit && d->effectiveLayoutMirror) {
+        switch (d->hAlign) {
+        case QDeclarativeTextEdit::AlignLeft:
+            effectiveAlignment = QDeclarativeTextEdit::AlignRight;
+            break;
+        case QDeclarativeTextEdit::AlignRight:
+            effectiveAlignment = QDeclarativeTextEdit::AlignLeft;
+            break;
+        default:
+            break;
+        }
+    }
+    return effectiveAlignment;
+}
+
+bool QDeclarativeTextEditPrivate::setHAlign(QDeclarativeTextEdit::HAlignment alignment, bool forceAlign)
+{
+    Q_Q(QDeclarativeTextEdit);
+    if (hAlign != alignment || forceAlign) {
+        QDeclarativeTextEdit::HAlignment oldEffectiveHAlign = q->effectiveHAlign();
+        hAlign = alignment;
+        emit q->horizontalAlignmentChanged(alignment);
+        if (oldEffectiveHAlign != q->effectiveHAlign())
+            emit q->effectiveHorizontalAlignmentChanged();
+        return true;
+    }
+    return false;
+}
+
+bool QDeclarativeTextEditPrivate::determineHorizontalAlignment()
+{
+    Q_Q(QDeclarativeTextEdit);
+    if (hAlignImplicit && q->isComponentComplete()) {
+        bool alignToRight = text.isEmpty() ? QApplication::keyboardInputDirection() == Qt::RightToLeft : rightToLeftText;
+        return setHAlign(alignToRight ? QDeclarativeTextEdit::AlignRight : QDeclarativeTextEdit::AlignLeft);
+    }
+    return false;
+}
+
+void QDeclarativeTextEditPrivate::mirrorChange()
+{
+    Q_Q(QDeclarativeTextEdit);
+    if (q->isComponentComplete()) {
+        if (!hAlignImplicit && (hAlign == QDeclarativeTextEdit::AlignRight || hAlign == QDeclarativeTextEdit::AlignLeft)) {
+            updateDefaultTextOption();
+            q->updateSize();
+            emit q->effectiveHorizontalAlignmentChanged();
+        }
+    }
 }
 
 QDeclarativeTextEdit::VAlignment QDeclarativeTextEdit::vAlign() const
@@ -544,6 +619,7 @@ void QDeclarativeTextEdit::setWrapMode(WrapMode mode)
 
 /*!
     \qmlproperty int TextEdit::lineCount
+    \since Quick 1.1
 
     Returns the total number of lines in the textEdit item.
 */
@@ -605,6 +681,22 @@ int QDeclarativeTextEdit::positionAt(int x, int y) const
 {
     Q_D(const QDeclarativeTextEdit);
     int r = d->document->documentLayout()->hitTest(QPoint(x,y-d->yoff), Qt::FuzzyHit);
+    QTextCursor cursor = d->control->textCursor();
+    if (r > cursor.position()) {
+        // The cursor position includes positions within the preedit text, but only positions in the
+        // same text block are offset so it is possible to get a position that is either part of the
+        // preedit or the next text block.
+        QTextLayout *layout = cursor.block().layout();
+        const int preeditLength = layout
+                ? layout->preeditAreaText().length()
+                : 0;
+        if (preeditLength > 0
+                && d->document->documentLayout()->blockBoundingRect(cursor.block()).contains(x,y-d->yoff)) {
+            r = r > cursor.position() + preeditLength
+                    ? r - preeditLength
+                    : cursor.position();
+        }
+    }
     return r;
 }
 
@@ -950,6 +1042,8 @@ void QDeclarativeTextEdit::componentComplete()
     Q_D(QDeclarativeTextEdit);
     QDeclarativePaintedItem::componentComplete();
     if (d->dirty) {
+        d->determineHorizontalAlignment();
+        d->updateDefaultTextOption();
         updateSize();
         d->dirty = false;
     }
@@ -1134,6 +1228,7 @@ void QDeclarativeTextEditPrivate::focusChanged(bool hasFocus)
 
 /*!
     \qmlmethod void TextEdit::deselect()
+    \since Quick 1.1
 
     Removes active text selection.
 */
@@ -1198,6 +1293,23 @@ void QDeclarativeTextEdit::select(int start, int end)
     updateSelectionMarkers();
 }
 
+/*!
+    \qmlmethod void TextEdit::isRightToLeft(int start, int end)
+
+    Returns true if the natural reading direction of the editor text
+    found between positions \a start and \a end is right to left.
+*/
+bool QDeclarativeTextEdit::isRightToLeft(int start, int end)
+{
+    Q_D(QDeclarativeTextEdit);
+    if (start > end) {
+        qmlInfo(this) << "isRightToLeft(start, end) called with the end property being smaller than the start.";
+        return false;
+    } else {
+        return d->text.mid(start, end - start).isRightToLeft();
+    }
+}
+
 #ifndef QT_NO_CLIPBOARD
 /*!
     \qmlmethod TextEdit::cut()
@@ -1316,7 +1428,10 @@ Handles the given input method \a event.
 void QDeclarativeTextEdit::inputMethodEvent(QInputMethodEvent *event)
 {
     Q_D(QDeclarativeTextEdit);
+    const bool wasComposing = isInputMethodComposing();
     d->control->processEvent(event, QPointF(0, -d->yoff));
+    if (wasComposing != isInputMethodComposing())
+        emit inputMethodComposingChanged();
 }
 
 /*!
@@ -1381,19 +1496,38 @@ void QDeclarativeTextEdit::updateImgCache(const QRectF &rf)
 
 /*!
     \qmlproperty bool TextEdit::canPaste
+    \since QtQuick 1.1
 
     Returns true if the TextEdit is writable and the content of the clipboard is
     suitable for pasting into the TextEdit.
-
-    \since QtQuick 1.1
 */
-
 bool QDeclarativeTextEdit::canPaste() const
 {
     Q_D(const QDeclarativeTextEdit);
     return d->canPaste;
 }
 
+/*!
+    \qmlproperty bool TextEdit::inputMethodComposing
+
+    \since QtQuick 1.1
+
+    This property holds whether the TextEdit has partial text input from an
+    input method.
+
+    While it is composing an input method may rely on mouse or key events from
+    the TextEdit to edit or commit the partial text.  This property can be used
+    to determine when to disable events handlers that may interfere with the
+    correct operation of an input method.
+*/
+bool QDeclarativeTextEdit::isInputMethodComposing() const
+{
+    Q_D(const QDeclarativeTextEdit);
+    if (QTextLayout *layout = d->control->textCursor().block().layout())
+        return layout->preeditAreaText().length() > 0;
+    return false;
+}
+
 void QDeclarativeTextEditPrivate::init()
 {
     Q_Q(QDeclarativeTextEdit);
@@ -1429,6 +1563,7 @@ void QDeclarativeTextEditPrivate::init()
 #ifndef QT_NO_CLIPBOARD
     QObject::connect(q, SIGNAL(readOnlyChanged(bool)), q, SLOT(q_canPasteChanged()));
     QObject::connect(QApplication::clipboard(), SIGNAL(dataChanged()), q, SLOT(q_canPasteChanged()));
+    canPaste = control->canPaste();
 #endif
 
     document = control->document();
@@ -1443,6 +1578,9 @@ void QDeclarativeTextEdit::q_textChanged()
 {
     Q_D(QDeclarativeTextEdit);
     d->text = text();
+    d->rightToLeftText = d->document->begin().layout()->engine()->isRightToLeft();
+    d->determineHorizontalAlignment();
+    d->updateDefaultTextOption();
     updateSize();
     updateTotalLines();
     updateMicroFocus();
@@ -1607,9 +1745,18 @@ void QDeclarativeTextEdit::updateTotalLines()
 
 void QDeclarativeTextEditPrivate::updateDefaultTextOption()
 {
+    Q_Q(QDeclarativeTextEdit);
     QTextOption opt = document->defaultTextOption();
     int oldAlignment = opt.alignment();
-    opt.setAlignment((Qt::Alignment)(int)(hAlign | vAlign));
+
+    QDeclarativeTextEdit::HAlignment horizontalAlignment = q->effectiveHAlign();
+    if (rightToLeftText) {
+        if (horizontalAlignment == QDeclarativeTextEdit::AlignLeft)
+            horizontalAlignment = QDeclarativeTextEdit::AlignRight;
+        else if (horizontalAlignment == QDeclarativeTextEdit::AlignRight)
+            horizontalAlignment = QDeclarativeTextEdit::AlignLeft;
+    }
+    opt.setAlignment((Qt::Alignment)(int)(horizontalAlignment | vAlign));
 
     QTextOption::WrapMode oldWrapMode = opt.wrapMode();
     opt.setWrapMode(QTextOption::WrapMode(wrapMode));