diff options
| -rw-r--r-- | src/gui/text/qtextengine.cpp | 42 | ||||
| -rw-r--r-- | tests/auto/other/qcomplextext/tst_qcomplextext.cpp | 6 |
2 files changed, 34 insertions, 14 deletions
diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp index 9ed497839c..f305b9b7dc 100644 --- a/src/gui/text/qtextengine.cpp +++ b/src/gui/text/qtextengine.cpp @@ -252,8 +252,6 @@ struct QBidiAlgorithm { void initScriptAnalysisAndIsolatePairs(Vector<IsolatePair> &isolatePairs) { - isolatePairs.append({ -1, length }); // treat the whole string as one isolate - int isolateStack[128]; int isolateLevel = 0; // load directions of string, and determine isolate pairs @@ -304,6 +302,14 @@ struct QBidiAlgorithm { case QChar::DirS: case QChar::DirB: analysis[pos].bidiFlags = QScriptAnalysis::BidiResetToParagraphLevel; + if (uc == QChar::ParagraphSeparator) { + // close all open isolates as we start a new paragraph + while (isolateLevel > 0) { + --isolateLevel; + if (isolateLevel < 128) + isolatePairs[isolateStack[isolateLevel]].end = pos; + } + } break; default: break; @@ -434,21 +440,21 @@ struct QBidiAlgorithm { doEmbed(true, true, false); break; case QChar::DirLRI: - ++isolatePairPosition; Q_ASSERT(isolatePairs.at(isolatePairPosition).start == i); doEmbed(false, false, true); + ++isolatePairPosition; break; case QChar::DirRLI: - ++isolatePairPosition; Q_ASSERT(isolatePairs.at(isolatePairPosition).start == i); doEmbed(true, false, true); + ++isolatePairPosition; break; case QChar::DirFSI: { - ++isolatePairPosition; const auto &pair = isolatePairs.at(isolatePairPosition); Q_ASSERT(pair.start == i); bool isRtl = QStringView(text + pair.start + 1, pair.end - pair.start - 1).isRightToLeft(); doEmbed(isRtl, false, true); + ++isolatePairPosition; break; } @@ -492,16 +498,24 @@ struct QBidiAlgorithm { analysis[i].bidiDirection = (level & 1) ? QChar::DirR : QChar::DirL; break; case QChar::DirB: - // paragraph separator, go down to base direction - appendRun(i - 1); - while (stack.counter > 1) { - // there might be remaining isolates on the stack that are missing a PDI. Those need to get - // a continuation indicating to take the eos from the end of the string (ie. the paragraph level) - const auto &t = stack.top(); - if (t.isIsolate) { - runs[t.runBeforeIsolate].continuation = -2; + // paragraph separator, go down to base direction, reset all state + if (text[i].unicode() == QChar::ParagraphSeparator) { + appendRun(i - 1); + while (stack.counter > 1) { + // there might be remaining isolates on the stack that are missing a PDI. Those need to get + // a continuation indicating to take the eos from the end of the string (ie. the paragraph level) + const auto &t = stack.top(); + if (t.isIsolate) { + runs[t.runBeforeIsolate].continuation = -2; + } + --stack.counter; } - --stack.counter; + continuationFrom = -1; + lastRunWithContent = -1; + validIsolateCount = 0; + overflowIsolateCount = 0; + overflowEmbeddingCount = 0; + level = baseLevel; } break; default: diff --git a/tests/auto/other/qcomplextext/tst_qcomplextext.cpp b/tests/auto/other/qcomplextext/tst_qcomplextext.cpp index 0116e546a0..c328776089 100644 --- a/tests/auto/other/qcomplextext/tst_qcomplextext.cpp +++ b/tests/auto/other/qcomplextext/tst_qcomplextext.cpp @@ -68,6 +68,12 @@ void tst_QComplexText::bidiReorderString_data() << (int) data->basicDir; data++; } + + QString isolateAndBoundary = QString(QChar(0x2068 /* DirFSI */)) + QChar(0x1c /* DirB */) + QChar(0x2069 /* DirPDI */); + QTest::newRow( "isolateAndBoundary" ) + << QString::fromUtf8( data->logical ) + << QString::fromUtf8( data->visual ) + << (int) QChar::DirL; } void tst_QComplexText::bidiReorderString() |