Merge branch '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2 into 4.7-integration

* '4.7' of scm.dev.nokia.troll.no:qt/oslo-staging-2: (47 commits)
  QScript: More missing APIShim
  QScriptEngine: Fix reentrency involving creation and desctructions of QScriptEngines
  Work-around Symbian 10.1's broken egl.h
  Add some #warnings to debug Symbian EGL build failure
  Don't detect EGLImage presence by testing function pointers
  Implement proper QStaticText support in QPaintBuffer
  Make QStaticText layout lazy
  Change QStaticText::setMaximumSize() to setTextWidth()
  Respect QPainter::pen() in QPainter::drawStaticText()
  QVarLenghtArray:  add some API to be consistant to QVector
  Don't try to resolve EGLImage function pointers if they are defined
  Change ORs to ANDs when checking EGLImage extension defines
  Protect EGLImage function definitions in #ifdef
  Fix a bug in greek shaping causing infinite loops
  Define QT_NO_EGL in configure.exe
  improve mingw 64 bit support
  Fix build on Windows
  Round instead of ceil font metrics when ForceIntegerMetrics is enabled
  cetest: remove source file duplicates from cetest.pro
  Remove EGLImage create/destroy resolving from VG pixmap data
  ...

7 files changed, 209 insertions, 106 deletions

diff --git a/src/gui/text/qfont.cpp b/src/gui/text/qfont.cpp
index 9b85c04..99b9f40 100644
--- a/src/gui/text/qfont.cpp
+++ b/src/gui/text/qfont.cpp
@@ -1297,6 +1297,8 @@ QFont::StyleHint QFont::styleHint() const
     \value PreferQuality prefer the best quality font. The font matcher
            will use the nearest standard point size that the font
            supports.
+    \value ForceIntegerMetrics forces the use of integer values in font engines that support fractional
+           font metrics.
 */
 
 /*!
diff --git a/src/gui/text/qfont.h b/src/gui/text/qfont.h
index 5adf237..6f62424 100644
--- a/src/gui/text/qfont.h
+++ b/src/gui/text/qfont.h
@@ -76,17 +76,18 @@ public:
     };
 
     enum StyleStrategy {
-        PreferDefault    = 0x0001,
-        PreferBitmap     = 0x0002,
-        PreferDevice     = 0x0004,
-        PreferOutline    = 0x0008,
-        ForceOutline     = 0x0010,
-        PreferMatch      = 0x0020,
-        PreferQuality    = 0x0040,
-        PreferAntialias  = 0x0080,
-        NoAntialias      = 0x0100,
-        OpenGLCompatible = 0x0200,
-        NoFontMerging    = 0x8000
+        PreferDefault       = 0x0001,
+        PreferBitmap        = 0x0002,
+        PreferDevice        = 0x0004,
+        PreferOutline       = 0x0008,
+        ForceOutline        = 0x0010,
+        PreferMatch         = 0x0020,
+        PreferQuality       = 0x0040,
+        PreferAntialias     = 0x0080,
+        NoAntialias         = 0x0100,
+        OpenGLCompatible    = 0x0200,
+        ForceIntegerMetrics = 0x0400,
+        NoFontMerging       = 0x8000
     };
 
     enum Weight {
diff --git a/src/gui/text/qfontengine_mac.mm b/src/gui/text/qfontengine_mac.mm
index 8588214..0bfdbc0 100644
--- a/src/gui/text/qfontengine_mac.mm
+++ b/src/gui/text/qfontengine_mac.mm
@@ -53,6 +53,7 @@
 #include <qvarlengtharray.h>
 #include <qdebug.h>
 #include <qendian.h>
+#include <qmath.h>
 
 #include <ApplicationServices/ApplicationServices.h>
 #include <AppKit/AppKit.h>
@@ -303,12 +304,20 @@ bool QCoreTextFontEngineMulti::stringToCMap(const QChar *str, int len, QGlyphLay
                 outGlyphs[idx] = tmpGlyphs[i] | fontIndex;
                 outAdvances_x[idx] = QFixed::fromReal(tmpPoints[i + 1].x - tmpPoints[i].x);
                 outAdvances_y[idx] = QFixed::fromReal(tmpPoints[i + 1].y - tmpPoints[i].y);
+                
+                if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+                    outAdvances_x[idx] = outAdvances_x[idx].round();
+                    outAdvances_y[idx] = outAdvances_y[idx].round();
+                }
             }
             CGSize lastGlyphAdvance;
             CTFontGetAdvancesForGlyphs(runFont, kCTFontHorizontalOrientation, tmpGlyphs + glyphCount - 1, &lastGlyphAdvance, 1);
 
             outGlyphs[rtl ? 0 : (glyphCount - 1)] = tmpGlyphs[glyphCount - 1] | fontIndex;
-            outAdvances_x[rtl ? 0 : (glyphCount - 1)] = QFixed::fromReal(lastGlyphAdvance.width);
+            outAdvances_x[rtl ? 0 : (glyphCount - 1)] =
+                    (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+                    ? QFixed::fromReal(lastGlyphAdvance.width).round()
+                    : QFixed::fromReal(lastGlyphAdvance.width);
         }
         outGlyphs += glyphCount;
         outAttributes += glyphCount;
@@ -378,8 +387,11 @@ bool QCoreTextFontEngine::stringToCMap(const QChar *, int, QGlyphLayout *, int *
 glyph_metrics_t QCoreTextFontEngine::boundingBox(const QGlyphLayout &glyphs)
 {
     QFixed w;
-    for (int i = 0; i < glyphs.numGlyphs; ++i)
-        w += glyphs.effectiveAdvance(i);
+    for (int i = 0; i < glyphs.numGlyphs; ++i) {
+        w += (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+             ? glyphs.effectiveAdvance(i).round()
+             : glyphs.effectiveAdvance(i);
+    }
     return glyph_metrics_t(0, -(ascent()), w, ascent()+descent(), w, 0);
 }
 glyph_metrics_t QCoreTextFontEngine::boundingBox(glyph_t glyph)
@@ -393,33 +405,51 @@ glyph_metrics_t QCoreTextFontEngine::boundingBox(glyph_t glyph)
     ret.y = -QFixed::fromReal(rect.origin.y) - ret.height;
     CGSize advances[1];
     CTFontGetAdvancesForGlyphs(ctfont, kCTFontHorizontalOrientation, &g, advances, 1);
-    ret.xoff = QFixed::fromReal(advances[0].width).ceil();
-    ret.yoff = QFixed::fromReal(advances[0].height).ceil();
+    ret.xoff = QFixed::fromReal(advances[0].width);
+    ret.yoff = QFixed::fromReal(advances[0].height);
+
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+        ret.xoff = ret.xoff.round();
+        ret.yoff = ret.yoff.round();
+    }
+
     return ret;
 }
 
 QFixed QCoreTextFontEngine::ascent() const
 {
-    return QFixed::fromReal(CTFontGetAscent(ctfont)).ceil();
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFixed::fromReal(CTFontGetAscent(ctfont)).round()
+            : QFixed::fromReal(CTFontGetAscent(ctfont));
 }
 QFixed QCoreTextFontEngine::descent() const
 {
+    QFixed d = QFixed::fromReal(CTFontGetDescent(ctfont));
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+        d = d.round();
+
     // subtract a pixel to even out the historical +1 in QFontMetrics::height().
     // Fix in Qt 5.
-    return QFixed::fromReal(CTFontGetDescent(ctfont)).ceil() - 1;
+    return d - 1;
 }
 QFixed QCoreTextFontEngine::leading() const
 {
-    return QFixed::fromReal(CTFontGetLeading(ctfont)).ceil();
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFixed::fromReal(CTFontGetLeading(ctfont)).round()
+            : QFixed::fromReal(CTFontGetLeading(ctfont));
 }
 QFixed QCoreTextFontEngine::xHeight() const
 {
-    return QFixed::fromReal(CTFontGetXHeight(ctfont)).ceil();
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFixed::fromReal(CTFontGetXHeight(ctfont)).round()
+            : QFixed::fromReal(CTFontGetXHeight(ctfont));
 }
 QFixed QCoreTextFontEngine::averageCharWidth() const
 {
     // ### Need to implement properly and get the information from the OS/2 Table.
-    return QFontEngine::averageCharWidth();
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? QFontEngine::averageCharWidth().round()
+            : QFontEngine::averageCharWidth();
 }
 
 qreal QCoreTextFontEngine::maxCharWidth() const
@@ -787,6 +817,7 @@ struct QGlyphLayoutInfo
     int *mappedFonts;
     QTextEngine::ShaperFlags flags;
     QFontEngineMacMulti::ShaperItem *shaperItem;
+    unsigned int styleStrategy;
 };
 
 static OSStatus atsuPostLayoutCallback(ATSULayoutOperationSelector selector, ATSULineRef lineRef, URefCon refCon,
@@ -856,6 +887,11 @@ static OSStatus atsuPostLayoutCallback(ATSULayoutOperationSelector selector, ATS
         QFixed yAdvance = FixedToQFixed(baselineDeltas[glyphIdx]);
         QFixed xAdvance = FixedToQFixed(layoutData[glyphIdx + 1].realPos - layoutData[glyphIdx].realPos);
 
+        if (nfo->styleStrategy & QFont::ForceIntegerMetrics) {
+            yAdvance = yAdvance.round();
+            xAdvance = xAdvance.round();
+        }
+
         if (glyphId != 0xffff || i == 0) {
             if (i < nfo->glyphs->numGlyphs)
             {
@@ -1032,6 +1068,7 @@ bool QFontEngineMacMulti::stringToCMapInternal(const QChar *str, int len, QGlyph
     nfo.callbackCalled = false;
     nfo.flags = flags;
     nfo.shaperItem = shaperItem;
+    nfo.styleStrategy = fontDef.styleStrategy;
 
     int prevNumGlyphs = *nglyphs;
 
@@ -1061,8 +1098,6 @@ bool QFontEngineMacMulti::stringToCMapInternal(const QChar *str, int len, QGlyph
                                        | kATSLineDisableAllJustification
                                        ;
 
-	layopts |= kATSLineUseDeviceMetrics;
-
         if (fontDef.styleStrategy & QFont::NoAntialias)
             layopts |= kATSLineNoAntiAliasing;
 
@@ -1366,14 +1401,22 @@ void QFontEngineMac::recalcAdvances(QGlyphLayout *glyphs, QTextEngine::ShaperFla
     for (int i = 0; i < glyphs->numGlyphs; ++i) {
         glyphs->advances_x[i] = QFixed::fromReal(metrics[i].deviceAdvance.x);
         glyphs->advances_y[i] = QFixed::fromReal(metrics[i].deviceAdvance.y);
+
+        if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+            glyphs->advances_x[i] = glyphs->advances_x[i].round();
+            glyphs->advances_y[i] = glyphs->advances_y[i].round();
+        }
     }
 }
 
 glyph_metrics_t QFontEngineMac::boundingBox(const QGlyphLayout &glyphs)
 {
     QFixed w;
-    for (int i = 0; i < glyphs.numGlyphs; ++i)
-        w += glyphs.effectiveAdvance(i);
+    for (int i = 0; i < glyphs.numGlyphs; ++i) {
+        w += (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+             ? glyphs.effectiveAdvance(i).round()
+             : glyphs.effectiveAdvance(i);
+    }
     return glyph_metrics_t(0, -(ascent()), w, ascent()+descent(), w, 0);
 }
 
@@ -1398,39 +1441,58 @@ glyph_metrics_t QFontEngineMac::boundingBox(glyph_t glyph)
     gm.xoff = QFixed::fromReal(metrics.deviceAdvance.x);
     gm.yoff = QFixed::fromReal(metrics.deviceAdvance.y);
 
+    if (fontDef.styleStrategy & QFont::ForceIntegerMetrics) {
+        gm.x = gm.x.floor();
+        gm.y = gm.y.floor();
+        gm.xoff = gm.xoff.round();
+        gm.yoff = gm.yoff.round();
+    }
+
     return gm;
 }
 
 QFixed QFontEngineMac::ascent() const
 {
-    return m_ascent;
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? m_ascent.round()
+            : m_ascent;
 }
 
 QFixed QFontEngineMac::descent() const
 {
     // subtract a pixel to even out the historical +1 in QFontMetrics::height().
     // Fix in Qt 5.
-    return m_descent - 1;
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? m_descent.round() - 1
+            : m_descent;
 }
 
 QFixed QFontEngineMac::leading() const
 {
-    return m_leading;
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? m_leading.round()
+            : m_leading;
 }
 
 qreal QFontEngineMac::maxCharWidth() const
 {
-    return m_maxCharWidth;
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? qRound(m_maxCharWidth)
+            : m_maxCharWidth;
 }
 
 QFixed QFontEngineMac::xHeight() const
 {
-    return m_xHeight;
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? m_xHeight.round()
+            : m_xHeight;
 }
 
 QFixed QFontEngineMac::averageCharWidth() const
 {
-    return m_averageCharWidth;
+    return (fontDef.styleStrategy & QFont::ForceIntegerMetrics)
+            ? m_averageCharWidth.round()
+            : m_averageCharWidth;
 }
 
 static void addGlyphsToPathHelper(ATSUStyle style, glyph_t *glyphs, QFixedPoint *positions, int numGlyphs, QPainterPath *path)
diff --git a/src/gui/text/qfontmetrics.cpp b/src/gui/text/qfontmetrics.cpp
index 9349f46..3a52e8e 100644
--- a/src/gui/text/qfontmetrics.cpp
+++ b/src/gui/text/qfontmetrics.cpp
@@ -328,7 +328,7 @@ int QFontMetrics::height() const
 {
     QFontEngine *engine = d->engineForScript(QUnicodeTables::Common);
     Q_ASSERT(engine != 0);
-    return qRound(engine->ascent() + engine->descent()) + 1;
+    return qRound(engine->ascent()) + qRound(engine->descent()) + 1;
 }
 
 /*!
@@ -356,7 +356,7 @@ int QFontMetrics::lineSpacing() const
 {
     QFontEngine *engine = d->engineForScript(QUnicodeTables::Common);
     Q_ASSERT(engine != 0);
-    return qRound(engine->leading() + engine->ascent() + engine->descent()) + 1;
+    return qRound(engine->leading()) + qRound(engine->ascent()) + qRound(engine->descent()) + 1;
 }
 
 /*!
diff --git a/src/gui/text/qstatictext.cpp b/src/gui/text/qstatictext.cpp
index 1fabf12..45252d8 100644
--- a/src/gui/text/qstatictext.cpp
+++ b/src/gui/text/qstatictext.cpp
@@ -99,20 +99,27 @@ QT_BEGIN_NAMESPACE
     point with no boundaries, and also when QPainter::drawText() is called with a bounding 
     rectangle. 
 
-    If a bounding rectangle is not required, create a QStaticText object without setting a maximum 
-    size. The text will then occupy a single line. 
+    If a bounding rectangle is not required, create a QStaticText object without setting a preferred
+    text width. The text will then occupy a single line.
 
-    If you set a maximum size on the QStaticText object, this will bound the text. The text will
-    be formatted so that no line exceeds the given width. When the object is painted, it will 
-    be clipped at the given size. The position of the text is decided by the argument
-    passed to QPainter::drawStaticText() and can change from call to call with a minimal impact
-    on performance.
+    If you set a text width on the QStaticText object, this will bound the text. The text will
+    be formatted so that no line exceeds the given width. The text width set for QStaticText will
+    not automatically be used for clipping. To achieve clipping in addition to line breaks, use
+    QPainter::setClipRect(). The position of the text is decided by the argument passed to
+    QPainter::drawStaticText() and can change from call to call with a minimal impact on
+    performance.
 
     QStaticText will attempt to guess the format of the input text using Qt::mightBeRichText().
     To force QStaticText to display its contents as either plain text or rich text, use the
     function QStaticText::setTextFormat() and pass in, respectively, Qt::PlainText and
     Qt::RichText.
 
+    If it's the first time the static text is drawn, or if the static text, or the painter's font
+    or matrix have been altered since the last time it was drawn, the text's layout has to be
+    recalculated. This will impose an overhead on the QPainter::drawStaticText() call where the
+    relayout occurs. To avoid this overhead in the paint event, you can call prepare() ahead of
+    time to ensure that the layout is calculated.
+
     \sa QPainter::drawText(), QPainter::drawStaticText(), QTextLayout, QTextDocument
 */
 
@@ -143,12 +150,11 @@ QStaticText::QStaticText()
 
     If an invalid size is passed for \a size the text will be unbounded.
 */
-QStaticText::QStaticText(const QString &text, const QSizeF &size)
+QStaticText::QStaticText(const QString &text)
     : data(new QStaticTextPrivate)
 {    
     data->text = text;
-    data->maximumSize = size;
-    data->init();
+    data->invalidate();
 }
 
 /*!
@@ -177,17 +183,17 @@ void QStaticText::detach()
 }
 
 /*!
-  Prepares the QStaticText object for being painted with the given \a matrix and the given
-  \a font to avoid overhead when the actual drawStaticText() call is made.
+  Prepares the QStaticText object for being painted with the given \a matrix and the given \a font
+  to avoid overhead when the actual drawStaticText() call is made.
 
-  When drawStaticText() is called, the layout of the QStaticText will be recalculated if the
-  painter's font or matrix is different from the one used for the currently cached layout. By
-  default, QStaticText will use a default constructed QFont and an identity matrix to create
-  its layout.
+  When drawStaticText() is called, the layout of the QStaticText will be recalculated if any part
+  of the QStaticText object has changed since the last time it was drawn. It will also be
+  recalculated if the painter's font or matrix are not the same as when the QStaticText was last
+  drawn.
 
-  To avoid the overhead of creating the layout the first time you draw the QStaticText with
-  a painter whose matrix or font are different from the defaults, you can use the prepare()
-  function and pass in the matrix and font you expect to use when drawing the text.
+  To avoid the overhead of creating the layout the first time you draw the QStaticText after
+  making changes, you can use the prepare() function and pass in the \a matrix and \a font you
+  expect to use when drawing the text.
 
   \sa QPainter::setFont(), QPainter::setMatrix()
 */
@@ -209,7 +215,7 @@ QStaticText &QStaticText::operator=(const QStaticText &other)
 }
 
 /*!
-    Compares \a other to this QStaticText. Returns true if the texts, fonts and maximum sizes
+    Compares \a other to this QStaticText. Returns true if the texts, fonts and text widths
     are equal.
 */
 bool QStaticText::operator==(const QStaticText &other) const
@@ -217,7 +223,7 @@ bool QStaticText::operator==(const QStaticText &other) const
     return (data == other.data
             || (data->text == other.data->text
                 && data->font == other.data->font
-                && data->maximumSize == other.data->maximumSize));
+                && data->textWidth == other.data->textWidth));
 }
 
 /*!
@@ -232,7 +238,7 @@ bool QStaticText::operator!=(const QStaticText &other) const
 /*!
     Sets the text of the QStaticText to \a text.
 
-    \note This function will cause the layout of the text to be recalculated.
+    \note This function will cause the layout of the text to require recalculation.
 
     \sa text()
 */
@@ -240,7 +246,7 @@ void QStaticText::setText(const QString &text)
 {
     detach();
     data->text = text;
-    data->init();
+    data->invalidate();
 }
 
 /*!
@@ -250,7 +256,7 @@ void QStaticText::setText(const QString &text)
    displayed as is, whereas it will be interpreted as HTML if the format is Qt::RichText. HTML tags
    that alter the font of the text, its color, or its layout are supported by QStaticText.
 
-   \note This function will cause the layout of the text to be recalculated.
+   \note This function will cause the layout of the text to require recalculation.
 
    \sa textFormat(), setText(), text()
 */
@@ -258,7 +264,7 @@ void QStaticText::setTextFormat(Qt::TextFormat textFormat)
 {
     detach();
     data->textFormat = textFormat;
-    data->init();
+    data->invalidate();
 }
 
 /*!
@@ -289,7 +295,7 @@ QString QStaticText::text() const
 
   The default is QStaticText::ModerateCaching.
 
-  \note This function will cause the layout of the text to be recalculated.
+  \note This function will cause the layout of the text to require recalculation.
 
   \sa performanceHint()
 */
@@ -301,7 +307,7 @@ void QStaticText::setPerformanceHint(PerformanceHint performanceHint)
     }
     detach();
     data->useBackendOptimizations = (performanceHint == AggressiveCaching);
-    data->init();
+    data->invalidate();
 }
 
 /*!
@@ -315,48 +321,56 @@ QStaticText::PerformanceHint QStaticText::performanceHint() const
 }
 
 /*!
-    Sets the maximum size of the QStaticText to \a size.
+    Sets the preferred width for this QStaticText. If the text is wider than the specified width,
+    it will be broken into multiple lines and grow vertically. If the text cannot be split into
+    multiple lines, it will be larger than the specified \a textWidth.
 
-    \note This function will cause the layout of the text to be recalculated.
+    Setting the preferred text width to a negative number will cause the text to be unbounded.
 
-    \sa maximumSize(), size()
+    Use size() to get the actual size of the text.
+
+    \note This function will cause the layout of the text to require recalculation.
+
+    \sa textWidth(), size()
 */
-void QStaticText::setMaximumSize(const QSizeF &size)
+void QStaticText::setTextWidth(qreal textWidth)
 {
     detach();
-    data->maximumSize = size;
-    data->init();
+    data->textWidth = textWidth;
+    data->invalidate();
 }
 
 /*!
-    Returns the maximum size of the QStaticText.
+    Returns the preferred width for this QStaticText.
 
-    \sa setMaximumSize()
+    \sa setTextWidth()
 */
-QSizeF QStaticText::maximumSize() const
+qreal QStaticText::textWidth() const
 {
-    return data->maximumSize;
+    return data->textWidth;
 }
 
 /*!
   Returns the size of the bounding rect for this QStaticText.
 
-  \sa maximumSize()
+  \sa textWidth()
 */
 QSizeF QStaticText::size() const
 {
+    if (data->needsRelayout)
+        data->init();
     return data->actualSize;
 }
 
 QStaticTextPrivate::QStaticTextPrivate()
-        : items(0), itemCount(0), glyphPool(0), positionPool(0), needsClipRect(false),
-          useBackendOptimizations(false), textFormat(Qt::AutoText)
+        : items(0), itemCount(0), glyphPool(0), positionPool(0), textWidth(-1.0),
+          needsRelayout(true), useBackendOptimizations(false), textFormat(Qt::AutoText)
 {
 }
 
 QStaticTextPrivate::QStaticTextPrivate(const QStaticTextPrivate &other)
-    : text(other.text), font(other.font), maximumSize(other.maximumSize), matrix(other.matrix),
-      items(0), itemCount(0), glyphPool(0), positionPool(0), needsClipRect(false),
+    : text(other.text), font(other.font), textWidth(other.textWidth), matrix(other.matrix),
+      items(0), itemCount(0), glyphPool(0), positionPool(0), needsRelayout(true),
       useBackendOptimizations(other.useBackendOptimizations), textFormat(other.textFormat)
 {
 }
@@ -388,8 +402,15 @@ namespace {
                   m_expectedItemCount(expectedItemCount),
                   m_expectedGlyphCount(expectedGlyphCount),
                   m_glyphPool(glyphPool),
-                  m_positionPool(positionPool)
+                  m_positionPool(positionPool),
+                  m_dirtyPen(false)
+        {
+        }
+
+        virtual void updateState(const QPaintEngineState &newState)
         {
+            if (newState.state() & QPaintEngine::DirtyPen)
+                m_dirtyPen = true;
         }
 
         virtual void drawTextItem(const QPointF &position, const QTextItem &textItem)
@@ -412,7 +433,8 @@ namespace {
             currentItem->numGlyphs = ti.glyphs.numGlyphs;
             currentItem->glyphs = m_glyphPool;
             currentItem->glyphPositions = m_positionPool;
-            currentItem->color = state->pen().color();
+            if (m_dirtyPen)
+                currentItem->color = state->pen().color();
 
             QTransform matrix = state->transform();
             matrix.translate(position.x(), position.y());
@@ -435,7 +457,6 @@ namespace {
 
         virtual bool begin(QPaintDevice *)  { return true; }
         virtual bool end() { return true; }
-        virtual void updateState(const QPaintEngineState &) {}
         virtual void drawPixmap(const QRectF &, const QPixmap &, const QRectF &) {}
         virtual Type type() const
         {
@@ -461,6 +482,8 @@ namespace {
 
         glyph_t *m_glyphPool;
         QFixedPoint *m_positionPool;
+
+        bool m_dirtyPen;
     };
 
     class DrawTextItemDevice: public QPaintDevice
@@ -530,41 +553,50 @@ namespace {
     };
 }
 
-void QStaticTextPrivate::paintText(const QPointF &pos, QPainter *p)
+void QStaticTextPrivate::paintText(const QPointF &topLeftPosition, QPainter *p)
 {
     bool preferRichText = textFormat == Qt::RichText
                           || (textFormat == Qt::AutoText && Qt::mightBeRichText(text));
 
     if (!preferRichText) {
-        if (maximumSize.isValid()) {
-            QRectF boundingRect;
-            p->drawText(QRectF(pos, maximumSize), Qt::TextWordWrap, text, &boundingRect);
-
-            actualSize = boundingRect.size();
-            needsClipRect = boundingRect.width() > maximumSize.width()
-                            || boundingRect.height() > maximumSize.height();
-        } else {
-            p->drawText(pos, text);
-            needsClipRect = false;
-
-            QFontMetrics fm(font);
-            actualSize = fm.boundingRect(text).size();
+        QTextLayout textLayout;
+        textLayout.setText(text);
+        textLayout.setFont(font);
+
+        qreal leading = QFontMetricsF(font).leading();
+        qreal height = -leading;
+
+        textLayout.beginLayout();
+        while (1) {
+            QTextLine line = textLayout.createLine();
+            if (!line.isValid())
+                break;
+
+            if (textWidth >= 0.0)
+                line.setLineWidth(textWidth);
+            height += leading;
+            line.setPosition(QPointF(0.0, height));
+            height += line.height();
         }
+        textLayout.endLayout();
+
+        actualSize = textLayout.boundingRect().size();
+        textLayout.draw(p, topLeftPosition);
     } else {
         QTextDocument document;
         document.setDefaultFont(font);
+        document.setDocumentMargin(0.0);
+        if (textWidth >= 0.0)
+            document.setTextWidth(textWidth);
         document.setHtml(text);
 
-        QRectF rect = maximumSize.isValid() ? QRectF(pos, maximumSize) : QRectF();
         document.adjustSize();
         p->save();
-        p->translate(pos);
-        document.drawContents(p, rect);        
+        p->translate(topLeftPosition);
+        document.drawContents(p);
         p->restore();
+
         actualSize = document.size();
-        needsClipRect = maximumSize.isValid()
-                        && (actualSize.width() > maximumSize.width()
-                            || actualSize.height() > maximumSize.height());
     }
 }
 
@@ -611,6 +643,7 @@ void QStaticTextPrivate::init()
         paintText(QPointF(0, 0), &painter);
     }
 
+    needsRelayout = false;
 }
 
 QT_END_NAMESPACE
diff --git a/src/gui/text/qstatictext.h b/src/gui/text/qstatictext.h
index 00d42e0..f3bef93 100644
--- a/src/gui/text/qstatictext.h
+++ b/src/gui/text/qstatictext.h
@@ -66,7 +66,7 @@ public:
     };
 
     QStaticText();
-    QStaticText(const QString &text, const QSizeF &maximumSize = QSizeF());
+    QStaticText(const QString &text);
     QStaticText(const QStaticText &other);
     ~QStaticText();
 
@@ -76,12 +76,12 @@ public:
     void setTextFormat(Qt::TextFormat textFormat);
     Qt::TextFormat textFormat() const;
 
-    void setMaximumSize(const QSizeF &maximumSize);
-    QSizeF maximumSize() const;
+    void setTextWidth(qreal textWidth);
+    qreal textWidth() const;
 
     QSizeF size() const;
 
-    void prepare(const QTransform &matrix, const QFont &font);
+    void prepare(const QTransform &matrix = QTransform(), const QFont &font = QFont());
 
     void setPerformanceHint(PerformanceHint performanceHint);
     PerformanceHint performanceHint() const;
diff --git a/src/gui/text/qstatictext_p.h b/src/gui/text/qstatictext_p.h
index e758244..f017ed1 100644
--- a/src/gui/text/qstatictext_p.h
+++ b/src/gui/text/qstatictext_p.h
@@ -118,11 +118,16 @@ public:
     void init();
     void paintText(const QPointF &pos, QPainter *p);
 
+    void invalidate()
+    {
+        needsRelayout = true;
+    }
+
     QAtomicInt ref;                      // 4 bytes per text
 
     QString text;                        // 4 bytes per text
     QFont font;                          // 8 bytes per text
-    QSizeF maximumSize;                  // 16 bytes per text
+    qreal textWidth;                     // 8 bytes per text
     QSizeF actualSize;                   // 16 bytes per text
     QPointF position;                    // 16 bytes per text
 
@@ -132,11 +137,11 @@ public:
     glyph_t *glyphPool;                  // 4 bytes per text
     QFixedPoint *positionPool;           // 4 bytes per text
 
-    unsigned char needsClipRect           : 1;    // 1 byte per text
-    unsigned char useBackendOptimizations : 1;
+    unsigned char needsRelayout : 1;
+    unsigned char useBackendOptimizations : 1; // 1 byte per text
     unsigned char textFormat              : 2;
                                          // ================
-                                         // 171 bytes per text
+                                         // 163 bytes per text
 
     static QStaticTextPrivate *get(const QStaticText *q);
 };