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Bug 696229 - Adjust the hint correctly while drawing the caret for drag/drop so that it gets attached to the beginning of the lines correctly; r=roc

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This commit is contained in:
Ehsan Akhgari 2012-05-11 14:50:19 -04:00
parent 6ad581c15c
commit 5634d262e2
1 changed files with 17 additions and 2 deletions
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19
layout/base/nsCaret.cpp
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@ -451,6 +451,22 @@ void nsCaret::SetVisibilityDuringSelection(bool aVisibility)
mShowDuringSelection = aVisibility;
}
static
nsFrameSelection::HINT GetHintForPosition(nsIDOMNode* aNode, PRInt32 aOffset)
{
nsFrameSelection::HINT hint = nsFrameSelection::HINTLEFT;
nsCOMPtr<nsIContent> node = do_QueryInterface(aNode);
if (!node || aOffset < 1) {
return hint;
}
const nsTextFragment* text = node->GetText();
if (text && text->CharAt(aOffset - 1) == '\n') {
// Attach the caret to the next line if needed
hint = nsFrameSelection::HINTRIGHT;
}
return hint;
}
nsresult nsCaret::DrawAtPosition(nsIDOMNode* aNode, PRInt32 aOffset)
{
NS_ENSURE_ARG(aNode);
@ -466,9 +482,8 @@ nsresult nsCaret::DrawAtPosition(nsIDOMNode* aNode, PRInt32 aOffset)
// ourselves, our consumer will take care of that.
mBlinkRate = 0;
// XXX we need to do more work here to get the correct hint.
nsresult rv = DrawAtPositionWithHint(aNode, aOffset,
nsFrameSelection::HINTLEFT,
GetHintForPosition(aNode, aOffset),
bidiLevel, true)
? NS_OK : NS_ERROR_FAILURE;
ToggleDrawnStatus();