From a73e660fd05bafc402d63d71e811a621e46f452d Mon Sep 17 00:00:00 2001
From: Olivier Goffart <ogoffart@trolltech.com>
Date: Thu, 19 Nov 2009 11:32:48 +0100
Subject: Fixed Multi-length strings not implemented for float functions

Task-number: QTBUG-5963
Reviewed-by: Oswald Buddenhagen
Reviewed-by: Eskil
---
 src/gui/text/qfontmetrics.cpp                | 22 +++++++++++++++++++---
 tests/auto/qfontmetrics/tst_qfontmetrics.cpp | 14 ++++++++++++--
 2 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/src/gui/text/qfontmetrics.cpp b/src/gui/text/qfontmetrics.cpp
index b8c1b33..3d3f1e1 100644
--- a/src/gui/text/qfontmetrics.cpp
+++ b/src/gui/text/qfontmetrics.cpp
@@ -1367,10 +1367,13 @@ qreal QFontMetricsF::rightBearing(QChar ch) const
 */
 qreal QFontMetricsF::width(const QString &text) const
 {
+    int pos = text.indexOf(QLatin1Char('\x9c'));
+    int len = (pos != -1) ? pos : text.length();
+
     QTextEngine layout(text, d.data());
     layout.ignoreBidi = true;
     layout.itemize();
-    return layout.width(0, text.length()).toReal();
+    return layout.width(0, len).toReal();
 }
 
 /*!
@@ -1587,7 +1590,7 @@ QRectF QFontMetricsF::boundingRect(const QRectF &rect, int flags, const QString&
 */
 QSizeF QFontMetricsF::size(int flags, const QString &text, int tabStops, int *tabArray) const
 {
-    return boundingRect(QRectF(), flags, text, tabStops, tabArray).size();
+    return boundingRect(QRectF(), flags | Qt::TextLongestVariant, text, tabStops, tabArray).size();
 }
 
 /*!
@@ -1642,7 +1645,20 @@ QRectF QFontMetricsF::tightBoundingRect(const QString &text) const
 */
 QString QFontMetricsF::elidedText(const QString &text, Qt::TextElideMode mode, qreal width, int flags) const
 {
-    QStackTextEngine engine(text, QFont(d.data()));
+    QString _text = text;
+    if (!(flags & Qt::TextLongestVariant)) {
+        int posA = 0;
+        int posB = _text.indexOf(QLatin1Char('\x9c'));
+        while (posB >= 0) {
+            QString portion = _text.mid(posA, posB - posA);
+            if (size(flags, portion).width() <= width)
+                return portion;
+            posA = posB + 1;
+            posB = _text.indexOf(QLatin1Char('\x9c'), posA);
+        }
+        _text = _text.mid(posA);
+    }
+    QStackTextEngine engine(_text, QFont(d.data()));
     return engine.elidedText(mode, QFixed::fromReal(width), flags);
 }
 
diff --git a/tests/auto/qfontmetrics/tst_qfontmetrics.cpp b/tests/auto/qfontmetrics/tst_qfontmetrics.cpp
index e80f8e0..efb1b56 100644
--- a/tests/auto/qfontmetrics/tst_qfontmetrics.cpp
+++ b/tests/auto/qfontmetrics/tst_qfontmetrics.cpp
@@ -72,6 +72,7 @@ private slots:
     void veryNarrowElidedText();
     void averageCharWidth();
     void elidedMultiLength();
+    void elidedMultiLengthF();
     void bearingIncludedInBoundingRect();
 };
 
@@ -218,13 +219,13 @@ void tst_QFontMetrics::averageCharWidth()
     QVERIFY(fmf.averageCharWidth() != 0);
 }
 
-void tst_QFontMetrics::elidedMultiLength()
+template<class FontMetrics> void elidedMultiLength_helper()
 {
     QString text1 = "Long Text 1\x9cShorter\x9csmall";
     QString text1_long = "Long Text 1";
     QString text1_short = "Shorter";
     QString text1_small = "small";
-    QFontMetrics fm = QFontMetrics(QFont());
+    FontMetrics fm = FontMetrics(QFont());
     int width_long = fm.size(0, text1_long).width();
     QCOMPARE(fm.elidedText(text1,Qt::ElideRight, 8000), text1_long);
     QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_long + 1), text1_long);
@@ -238,7 +239,16 @@ void tst_QFontMetrics::elidedMultiLength()
     QString text1_el = QString::fromLatin1("s") + ellipsisChar;
     int width_small = fm.width(text1_el);
     QCOMPARE(fm.elidedText(text1,Qt::ElideRight, width_small + 1), text1_el);
+}
 
+void tst_QFontMetrics::elidedMultiLength()
+{
+    elidedMultiLength_helper<QFontMetrics>();
+}
+
+void tst_QFontMetrics::elidedMultiLengthF()
+{
+    elidedMultiLength_helper<QFontMetricsF>();
 }
 
 void tst_QFontMetrics::bearingIncludedInBoundingRect()
-- 
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