diff options
Diffstat (limited to 'src/gui/text')
| -rw-r--r-- | src/gui/text/qtextengine.cpp | 15 | ||||
| -rw-r--r-- | src/gui/text/qtextlayout.cpp | 5 |
2 files changed, 13 insertions, 7 deletions
diff --git a/src/gui/text/qtextengine.cpp b/src/gui/text/qtextengine.cpp index 53fd37abba..35950c709b 100644 --- a/src/gui/text/qtextengine.cpp +++ b/src/gui/text/qtextengine.cpp @@ -3138,11 +3138,12 @@ int QTextEngine::positionInLigature(const QScriptItem *si, int end, int QTextEngine::previousLogicalPosition(int oldPos) const { const QCharAttributes *attrs = attributes(); - if (!attrs || oldPos < 0) + int len = block.isValid() ? block.length() - 1 + : layoutData->string.length(); + Q_ASSERT(len <= layoutData->string.length()); + if (!attrs || oldPos <= 0 || oldPos > len) return oldPos; - if (oldPos <= 0) - return 0; oldPos--; while (oldPos && !attrs[oldPos].graphemeBoundary) oldPos--; @@ -3224,8 +3225,7 @@ int QTextEngine::beginningOfLine(int lineNum) int QTextEngine::positionAfterVisualMovement(int pos, QTextCursor::MoveOperation op) { - if (!layoutData) - itemize(); + itemize(); bool moveRight = (op == QTextCursor::Right); bool alignRight = isRightToLeft(); @@ -3233,7 +3233,8 @@ int QTextEngine::positionAfterVisualMovement(int pos, QTextCursor::MoveOperation return moveRight ^ alignRight ? nextLogicalPosition(pos) : previousLogicalPosition(pos); int lineNum = lineNumberForTextPosition(pos); - Q_ASSERT(lineNum >= 0); + if (lineNum < 0) + return pos; QVector<int> insertionPoints; insertionPointsForLine(lineNum, insertionPoints); @@ -3256,6 +3257,8 @@ int QTextEngine::positionAfterVisualMovement(int pos, QTextCursor::MoveOperation if (lineNum > 0) return alignRight ? beginningOfLine(lineNum - 1) : endOfLine(lineNum - 1); } + + break; } return pos; diff --git a/src/gui/text/qtextlayout.cpp b/src/gui/text/qtextlayout.cpp index 0c9866c6cf..c3cf2e56bb 100644 --- a/src/gui/text/qtextlayout.cpp +++ b/src/gui/text/qtextlayout.cpp @@ -674,7 +674,10 @@ int QTextLayout::nextCursorPosition(int oldPos, CursorMode mode) const int QTextLayout::previousCursorPosition(int oldPos, CursorMode mode) const { const QCharAttributes *attributes = d->attributes(); - if (!attributes || oldPos <= 0 || oldPos > d->layoutData->string.length()) + int len = d->block.isValid() ? d->block.length() - 1 + : d->layoutData->string.length(); + Q_ASSERT(len <= d->layoutData->string.length()); + if (!attributes || oldPos <= 0 || oldPos > len) return oldPos; if (mode == SkipCharacters) { |