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-rw-r--r--src/gui/text/qtextlayout.cpp51
-rw-r--r--tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp37
2 files changed, 68 insertions, 20 deletions
diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp
index 4d0a9e3a7c..d0dade31ef 100644
--- a/src/gui/text/qtextlayout.cpp
+++ b/src/gui/text/qtextlayout.cpp
@@ -1757,7 +1757,6 @@ inline bool LineBreakHelper::checkFullOtherwiseExtend(QScriptLine &line)
return true;
const QFixed oldTextWidth = line.textWidth;
- minw = qMax(minw, tmpData.textWidth);
line += tmpData;
line.textWidth += spaceData.textWidth;
@@ -1780,13 +1779,14 @@ inline bool LineBreakHelper::checkFullOtherwiseExtend(QScriptLine &line)
static inline void addNextCluster(int &pos, int end, QScriptLine &line, int &glyphCount,
const QScriptItem &current, const unsigned short *logClusters,
- const QGlyphLayout &glyphs)
+ const QGlyphLayout &glyphs, QFixed *clusterWidth = nullptr)
{
int glyphPosition = logClusters[pos];
do { // got to the first next cluster
++pos;
++line.length;
} while (pos < end && logClusters[pos] == glyphPosition);
+ QFixed clusterWid = line.textWidth;
do { // calculate the textWidth for the rest of the current cluster.
if (!glyphs.attributes[glyphPosition].dontPrint)
line.textWidth += glyphs.advances[glyphPosition];
@@ -1795,6 +1795,8 @@ static inline void addNextCluster(int &pos, int end, QScriptLine &line, int &gly
Q_ASSERT((pos == end && glyphPosition == current.num_glyphs) || logClusters[pos] == glyphPosition);
+ if (clusterWidth)
+ *clusterWidth += (line.textWidth - clusterWid);
++glyphCount;
}
@@ -1821,6 +1823,7 @@ void QTextLine::layout_helper(int maxGlyphs)
QTextOption::WrapMode wrapMode = eng->option.wrapMode();
bool breakany = (wrapMode == QTextOption::WrapAnywhere);
+ const bool breakWordOrAny = breakany || (wrapMode == QTextOption::WrapAtWordBoundaryOrAnywhere);
lbh.manualWrap = (wrapMode == QTextOption::ManualWrap || wrapMode == QTextOption::NoWrap);
int item = -1;
@@ -1957,9 +1960,10 @@ void QTextLine::layout_helper(int maxGlyphs)
lbh.whiteSpaceOrObject = false;
bool sb_or_ws = false;
lbh.saveCurrentGlyph();
+ QFixed accumulatedTextWidth;
do {
addNextCluster(lbh.currentPosition, end, lbh.tmpData, lbh.glyphCount,
- current, lbh.logClusters, lbh.glyphs);
+ current, lbh.logClusters, lbh.glyphs, &accumulatedTextWidth);
// This is a hack to fix a regression caused by the introduction of the
// whitespace flag to non-breakable spaces and will cause the non-breakable
@@ -1975,11 +1979,16 @@ void QTextLine::layout_helper(int maxGlyphs)
|| attributes[lbh.currentPosition].lineBreak) {
sb_or_ws = true;
break;
- } else if (breakany && attributes[lbh.currentPosition].graphemeBoundary) {
- break;
+ } else if (attributes[lbh.currentPosition].graphemeBoundary) {
+ if (breakWordOrAny) {
+ lbh.minw = qMax(accumulatedTextWidth, lbh.minw);
+ accumulatedTextWidth = 0;
+ }
+ if (breakany)
+ break;
}
} while (lbh.currentPosition < end);
- lbh.minw = qMax(lbh.tmpData.textWidth, lbh.minw);
+ lbh.minw = qMax(accumulatedTextWidth, lbh.minw);
if (lbh.currentPosition > 0 && lbh.currentPosition <= end
&& (lbh.currentPosition == end || attributes[lbh.currentPosition].lineBreak)
@@ -2106,6 +2115,20 @@ found:
line.descent.toReal(), line.textWidth.toReal(), lbh.spaceData.width.toReal());
LB_DEBUG(" : '%s'", eng->layoutData->string.mid(line.from, line.length).toUtf8().data());
+ const QFixed trailingSpace = (eng->option.flags() & QTextOption::IncludeTrailingSpaces
+ ? lbh.spaceData.textWidth
+ : QFixed(0));
+ if (eng->option.wrapMode() == QTextOption::WrapAtWordBoundaryOrAnywhere) {
+ if ((lbh.maxGlyphs != INT_MAX && lbh.glyphCount > lbh.maxGlyphs)
+ || (lbh.maxGlyphs == INT_MAX && line.textWidth > (line.width - trailingSpace))) {
+
+ eng->option.setWrapMode(QTextOption::WrapAnywhere);
+ layout_helper(lbh.maxGlyphs);
+ eng->option.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
+ return;
+ }
+ }
+
if (lbh.manualWrap) {
eng->minWidth = qMax(eng->minWidth, line.textWidth);
eng->maxWidth = qMax(eng->maxWidth, line.textWidth);
@@ -2116,8 +2139,8 @@ found:
if (line.textWidth > 0 && item < eng->layoutData->items.size())
eng->maxWidth += lbh.spaceData.textWidth;
- if (eng->option.flags() & QTextOption::IncludeTrailingSpaces)
- line.textWidth += lbh.spaceData.textWidth;
+
+ line.textWidth += trailingSpace;
if (lbh.spaceData.length) {
line.trailingSpaces = lbh.spaceData.length;
line.hasTrailingSpaces = true;
@@ -2125,18 +2148,6 @@ found:
line.justified = false;
line.gridfitted = false;
-
- if (eng->option.wrapMode() == QTextOption::WrapAtWordBoundaryOrAnywhere) {
- if ((lbh.maxGlyphs != INT_MAX && lbh.glyphCount > lbh.maxGlyphs)
- || (lbh.maxGlyphs == INT_MAX && line.textWidth > line.width)) {
-
- eng->option.setWrapMode(QTextOption::WrapAnywhere);
- line.length = 0;
- line.textWidth = 0;
- layout_helper(lbh.maxGlyphs);
- eng->option.setWrapMode(QTextOption::WrapAtWordBoundaryOrAnywhere);
- }
- }
}
/*!
diff --git a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
index 8466305832..9c5b58884a 100644
--- a/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
+++ b/tests/auto/gui/text/qtextlayout/tst_qtextlayout.cpp
@@ -142,6 +142,7 @@ private slots:
void koreanWordWrap();
void tooManyDirectionalCharctersCrash_qtbug77819();
void softHyphens();
+ void min_maximumWidth();
private:
QFont testFont;
@@ -2488,5 +2489,41 @@ void tst_QTextLayout::softHyphens()
}
}
+void tst_QTextLayout::min_maximumWidth()
+{
+ QString longString("lmong_long_crazy_87235982735_23857239682376923876923876-fuwhfhfw-names-AAAA-deeaois2019-03-03.and.more");
+ QTextLayout layout(longString, testFont);
+
+ for (int wrapMode = QTextOption::NoWrap; wrapMode <= QTextOption::WrapAtWordBoundaryOrAnywhere; ++wrapMode) {
+ QTextOption opt;
+ opt.setWrapMode((QTextOption::WrapMode)wrapMode);
+ layout.setTextOption(opt);
+ layout.beginLayout();
+ while (layout.createLine().isValid()) { }
+ layout.endLayout();
+ const qreal minWidth = layout.minimumWidth();
+ const qreal maxWidth = layout.maximumWidth();
+
+ // Try the layout from slightly wider than the widest (maxWidth)
+ // and narrow it down to slighly narrower than minWidth
+ // layout.maximumWidth() should return the same regardless
+ qreal width = qCeil(maxWidth/10)*10 + 10; // begin a bit wider
+ const qreal stepSize = 20;
+ while (width >= minWidth - stepSize) {
+ layout.beginLayout();
+ for (;;) {
+ QTextLine line = layout.createLine();
+ if (!line.isValid())
+ break;
+ line.setLineWidth(width);
+ }
+ layout.endLayout();
+ QCOMPARE(layout.minimumWidth(), minWidth);
+ QCOMPARE(layout.maximumWidth(), maxWidth);
+ width -= stepSize;
+ }
+ }
+}
+
QTEST_MAIN(tst_QTextLayout)
#include "tst_qtextlayout.moc"
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-07 18:18:51 +0000