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Editor: Open parent folds recursively until cursor is visible

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Fixes case when cursor jumps on hidden line in folded block which is in
another folded block. All parent folded blocks will be unfolded until
cursor is visible.

Change-Id: I3d41542506d9f40cb9e75d1b2818bc5767384d93
Reviewed-by: hjk <qthjk@ovi.com>
This commit is contained in:
Lukas Holecek
2012-10-07 09:59:26 +02:00
committed by hjk
parent bf2dabe120
commit f5f04eac92
1 changed files with 18 additions and 2 deletions
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20
src/plugins/texteditor/basetexteditor.cpp
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@@ -4478,9 +4478,25 @@ void BaseTextEditorWidget::ensureCursorVisible()
{
QTextBlock block = textCursor().block();
if (!block.isVisible()) {
while (!block.isVisible() && block.previous().isValid())
BaseTextDocumentLayout *documentLayout = qobject_cast<BaseTextDocumentLayout*>(document()->documentLayout());
QTC_ASSERT(documentLayout, return);
// Open all parent folds of current line.
int indent = BaseTextDocumentLayout::foldingIndent(block);
block = block.previous();
while (block.isValid()) {
const int indent2 = BaseTextDocumentLayout::foldingIndent(block);
if (BaseTextDocumentLayout::canFold(block) && indent2 < indent) {
BaseTextDocumentLayout::doFoldOrUnfold(block, /* unfold = */ true);
if (block.isVisible())
break;
indent = indent2;
}
block = block.previous();
toggleBlockVisible(block);
}
documentLayout->requestUpdate();
documentLayout->emitDocumentSizeChanged();
}
QPlainTextEdit::ensureCursorVisible();
}