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Fix repaint issue with collapsed blocks

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BaseTextEdit's paint event relied on us setting the line count of
invisible blocks to 0. This was not always the case, causing pixel
garbage to occur.
This commit is contained in:
mae
2009-10-05 19:14:31 +02:00
parent 51f997d6f0
commit b61969bebb
1 changed files with 7 additions and 1 deletions
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8
src/plugins/texteditor/basetexteditor.cpp
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@@ -2209,9 +2209,14 @@ void BaseTextEditor::paintEvent(QPaintEvent *e)
QTextBlock nextBlock = block.next();
QTextBlock nextVisibleBlock = nextBlock;
if (!nextVisibleBlock.isVisible())
if (!nextVisibleBlock.isVisible()) {
// invisible blocks do have zero line count
nextVisibleBlock = doc->findBlockByLineNumber(nextVisibleBlock.firstLineNumber());
// paranoia in case our code somewhere did not set the line count
// of the invisible block to 0
while (nextVisibleBlock.isValid() && !nextVisibleBlock.isVisible())
nextVisibleBlock = nextVisibleBlock.next();
}
if (block.isVisible() && bottom >= e->rect().top()) {
if (d->m_displaySettings.m_visualizeWhitespace) {
QTextLayout *layout = block.layout();
@@ -2330,6 +2335,7 @@ void BaseTextEditor::paintEvent(QPaintEvent *e)
blockHeight += r.height();
b.setVisible(false); // restore previous state
b.setLineCount(0); // restore 0 line count for invisible block
b = b.next();
}