Merge branch '4.8' of scm.dev.nokia.troll.no:qt/qt

Conflicts:
	src/gui/text/qrawfont.cpp
	src/gui/text/qtextlayout.cpp
	src/gui/util/qscroller.cpp
	src/gui/widgets/qlineedit.cpp

1 files changed, 131 insertions, 31 deletions

diff --git a/src/gui/text/qrawfont.cpp b/src/gui/text/qrawfont.cpp
index 10112d5..3f8f225 100644
--- a/src/gui/text/qrawfont.cpp
+++ b/src/gui/text/qrawfont.cpp
@@ -7,29 +7,29 @@
 ** This file is part of the QtGui module of the Qt Toolkit.
 **
 ** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
 ** GNU Lesser General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU Lesser
-** General Public License version 2.1 as published by the Free Software
-** Foundation and appearing in the file LICENSE.LGPL included in the
-** packaging of this file.  Please review the following information to
-** ensure the GNU Lesser General Public License version 2.1 requirements
-** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+** This file may be used under the terms of the GNU Lesser General Public
+** License version 2.1 as published by the Free Software Foundation and
+** appearing in the file LICENSE.LGPL included in the packaging of this
+** file. Please review the following information to ensure the GNU Lesser
+** General Public License version 2.1 requirements will be met:
+** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
 ** In addition, as a special exception, Nokia gives you certain additional
-** rights.  These rights are described in the Nokia Qt LGPL Exception
+** rights. These rights are described in the Nokia Qt LGPL Exception
 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License version 3.0 as published by the Free Software Foundation
+** and appearing in the file LICENSE.GPL included in the packaging of this
+** file. Please review the following information to ensure the GNU General
+** Public License version 3.0 requirements will be met:
+** http://www.gnu.org/copyleft/gpl.html.
 **
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
 **
 **
 **
@@ -78,7 +78,7 @@ QT_BEGIN_NAMESPACE
    A QRawFont object represents a single, physical instance of a given font in a given pixel size.
    I.e. in the typical case it represents a set of TrueType or OpenType font tables and uses a
    user specified pixel size to convert metrics into logical pixel units. In can be used in
-   combination with the QGlyphs class to draw specific glyph indexes at specific positions, and
+   combination with the QGlyphRun class to draw specific glyph indexes at specific positions, and
    also have accessors to some relevant data in the physical font.
 
    QRawFont only provides support for the main font technologies: GDI and DirectWrite on Windows
@@ -242,7 +242,7 @@ void QRawFont::loadFromData(const QByteArray &fontData,
    the pixel in the rasterization of the glyph. Otherwise, the image will be in the format of
    QImage::Format_A8 and each pixel will contain the opacity of the pixel in the rasterization.
 
-   \sa pathForGlyph(), QPainter::drawGlyphs()
+   \sa pathForGlyph(), QPainter::drawGlyphRun()
 */
 QImage QRawFont::alphaMapForGlyph(quint32 glyphIndex, AntialiasingType antialiasingType,
                                   const QTransform &transform) const
@@ -310,16 +310,68 @@ qreal QRawFont::descent() const
 }
 
 /*!
+   Returns the xHeight of this QRawFont in pixel units.
+
+   \sa QFontMetricsF::xHeight()
+*/
+qreal QRawFont::xHeight() const
+{
+    if (!isValid())
+        return 0.0;
+
+    return d->fontEngine->xHeight().toReal();
+}
+
+/*!
+   Returns the leading of this QRawFont in pixel units.
+
+   \sa QFontMetricsF::leading()
+*/
+qreal QRawFont::leading() const
+{
+    if (!isValid())
+        return 0.0;
+
+    return d->fontEngine->leading().toReal();
+}
+
+/*!
+   Returns the average character width of this QRawFont in pixel units.
+
+   \sa QFontMetricsF::averageCharWidth()
+*/
+qreal QRawFont::averageCharWidth() const
+{
+    if (!isValid())
+        return 0.0;
+
+    return d->fontEngine->averageCharWidth().toReal();
+}
+
+/*!
+   Returns the width of the widest character in the font.
+
+   \sa QFontMetricsF::maxWidth()
+*/
+qreal QRawFont::maxCharWidth() const
+{
+    if (!isValid())
+        return 0.0;
+
+    return d->fontEngine->maxCharWidth();
+}
+
+/*!
    Returns the pixel size set for this QRawFont. The pixel size affects how glyphs are
    rasterized, the size of glyphs returned by pathForGlyph(), and is used to convert
    internal metrics from design units to logical pixel units.
 
    \sa setPixelSize()
 */
-int QRawFont::pixelSize() const
+qreal QRawFont::pixelSize() const
 {
     if (!isValid())
-        return -1;
+        return 0.0;
 
     return d->fontEngine->fontDef.pixelSize;
 }
@@ -388,7 +440,7 @@ int QRawFont::weight() const
    QTextLayout to lay out and shape the text, then call QTextLayout::glyphs()
    to get the set of glyph index list and QRawFont pairs.
 
-   \sa advancesForGlyphIndexes(), QGlyphs, QTextLayout::glyphs(), QTextFragment::glyphs()
+   \sa advancesForGlyphIndexes(), glyphIndexesForChars(), QGlyphRun, QTextLayout::glyphRuns(), QTextFragment::glyphRuns()
 */
 QVector<quint32> QRawFont::glyphIndexesForString(const QString &text) const
 {
@@ -397,11 +449,9 @@ QVector<quint32> QRawFont::glyphIndexesForString(const QString &text) const
 
     int nglyphs = text.size();
     QVarLengthGlyphLayoutArray glyphs(nglyphs);
-    if (!d->fontEngine->stringToCMap(text.data(), text.size(), &glyphs, &nglyphs,
-                                  QTextEngine::GlyphIndicesOnly)) {
+    if (!glyphIndexesForChars(text.data(), text.size(), glyphs.glyphs, &nglyphs)) {
         glyphs.resize(nglyphs);
-        if (!d->fontEngine->stringToCMap(text.data(), text.size(), &glyphs, &nglyphs,
-                                      QTextEngine::GlyphIndicesOnly)) {
+        if (!glyphIndexesForChars(text.data(), text.size(), glyphs.glyphs, &nglyphs)) {
             Q_ASSERT_X(false, Q_FUNC_INFO, "stringToCMap shouldn't fail twice");
             return QVector<quint32>();
         }
@@ -415,6 +465,26 @@ QVector<quint32> QRawFont::glyphIndexesForString(const QString &text) const
 }
 
 /*!
+   Converts a string of unicode points to glyph indexes using the CMAP table in the
+   underlying font. The function works like glyphIndexesForString() except it take
+   an array (\a chars), the results will be returned though \a glyphIndexes array
+   and number of glyphs will be set in \a numGlyphs. The size of \a glyphIndexes array
+   must be at least \a numChars, if that's still not enough, this function will return
+   false, then you can resize \a glyphIndexes from the size returned in \a numGlyphs.
+
+   \sa glyphIndexesForString(), advancesForGlyphIndexes(), QGlyphs, QTextLayout::glyphs(), QTextFragment::glyphs()
+*/
+bool QRawFont::glyphIndexesForChars(const QChar *chars, int numChars, quint32 *glyphIndexes, int *numGlyphs) const
+{
+    if (!isValid())
+        return false;
+
+    QGlyphLayout glyphs;
+    glyphs.glyphs = glyphIndexes;
+    return d->fontEngine->stringToCMap(chars, numChars, &glyphs, numGlyphs, QTextEngine::GlyphIndicesOnly);
+}
+
+/*!
    Returns the QRawFont's advances for each of the \a glyphIndexes in pixel units. The advances
    give the distance from the position of a given glyph to where the next glyph should be drawn
    to make it appear as if the two glyphs are unspaced.
@@ -440,6 +510,36 @@ QVector<QPointF> QRawFont::advancesForGlyphIndexes(const QVector<quint32> &glyph
 }
 
 /*!
+   Returns the QRawFont's advances for each of the \a glyphIndexes in pixel units. The advances
+   give the distance from the position of a given glyph to where the next glyph should be drawn
+   to make it appear as if the two glyphs are unspaced. The glyph indexes are given with the
+   array \a glyphIndexes while the results are returned through \a advances, both of them must
+   have \a numGlyphs elements.
+
+   \sa QTextLine::horizontalAdvance(), QFontMetricsF::width()
+*/
+bool QRawFont::advancesForGlyphIndexes(const quint32 *glyphIndexes, QPointF *advances, int numGlyphs) const
+{
+    if (!isValid())
+        return false;
+
+    QGlyphLayout glyphs;
+    glyphs.glyphs = const_cast<HB_Glyph *>(glyphIndexes);
+    glyphs.numGlyphs = numGlyphs;
+    QVarLengthArray<QFixed> advances_x(numGlyphs);
+    QVarLengthArray<QFixed> advances_y(numGlyphs);
+    glyphs.advances_x = advances_x.data();
+    glyphs.advances_y = advances_y.data();
+
+    d->fontEngine->recalcAdvances(&glyphs, 0);
+
+    for (int i=0; i<numGlyphs; ++i)
+        advances[i] = QPointF(glyphs.advances_x[i].toReal(), glyphs.advances_y[i].toReal());
+
+    return true;
+}
+
+/*!
    Returns the hinting preference used to construct this QRawFont.
 
    \sa QFont::hintingPreference()
@@ -547,17 +647,17 @@ QRawFont QRawFont::fromFont(const QFont &font, QFontDatabase::WritingSystem writ
     layout.beginLayout();
     QTextLine line = layout.createLine();
     layout.endLayout();
-    QList<QGlyphs> list = layout.glyphs();
+    QList<QGlyphRun> list = layout.glyphRuns();
     if (list.size()) {
         // Pick the one matches the family name we originally requested,
         // if none of them match, just pick the first one
         for (int i = 0; i < list.size(); i++) {
-            QGlyphs glyphs = list.at(i);
-            QRawFont rawfont = glyphs.font();
+            QGlyphRun glyphs = list.at(i);
+            QRawFont rawfont = glyphs.rawFont();
             if (rawfont.familyName() == font.family())
                 return rawfont;
         }
-        return list.at(0).font();
+        return list.at(0).rawFont();
     }
     return QRawFont();
 #else
@@ -589,7 +689,7 @@ QRawFont QRawFont::fromFont(const QFont &font, QFontDatabase::WritingSystem writ
 /*!
    Sets the pixel size with which this font should be rendered to \a pixelSize.
 */
-void QRawFont::setPixelSize(int pixelSize)
+void QRawFont::setPixelSize(qreal pixelSize)
 {
     if (d->fontEngine == 0)
         return;