nsresult
nsQueryContentEventHandler::QueryRectFor(nsQueryContentEvent* aEvent,
nsIRange* aRange,
nsICaret* aCaret)
{
PRInt32 offsetInFrame;
nsIFrame* frame;
nsresult rv = GetStartFrameAndOffset(aRange, &frame, &offsetInFrame);
NS_ENSURE_SUCCESS(rv, rv);
nsPoint posInFrame;
rv = frame->GetPointFromOffset(aRange->StartOffset(), &posInFrame);
NS_ENSURE_SUCCESS(rv, rv);
aEvent->mReply.mRect.y = posInFrame.y;
aEvent->mReply.mRect.height = frame->GetSize().height;
if (aEvent->message == NS_QUERY_CHARACTER_RECT) {
nsPoint nextPos;
rv = frame->GetPointFromOffset(aRange->EndOffset(), &nextPos);
NS_ENSURE_SUCCESS(rv, rv);
aEvent->mReply.mRect.x = PR_MIN(posInFrame.x, nextPos.x);
aEvent->mReply.mRect.width = PR_ABS(posInFrame.x - nextPos.x);
} else {
aEvent->mReply.mRect.x = posInFrame.x;
aEvent->mReply.mRect.width = aCaret->GetCaretRect().width;
}
// The coordinates are app units here, they will be converted to system
// coordinates by view manager.
rv = ConvertToRootViewRelativeOffset(frame, aEvent->mReply.mRect);
NS_ENSURE_SUCCESS(rv, rv);
aEvent->mSucceeded = PR_TRUE;
return NS_OK;
}
nsresult
nsContentEventHandler::OnQueryCaretRect(nsQueryContentEvent* aEvent)
{
nsresult rv = Init(aEvent);
if (NS_FAILED(rv))
return rv;
nsRefPtr<nsCaret> caret = mPresShell->GetCaret();
NS_ASSERTION(caret, "GetCaret returned null");
// When the selection is collapsed and the queried offset is current caret
// position, we should return the "real" caret rect.
PRBool selectionIsCollapsed;
rv = mSelection->GetIsCollapsed(&selectionIsCollapsed);
NS_ENSURE_SUCCESS(rv, rv);
if (selectionIsCollapsed) {
PRUint32 offset;
rv = GetFlatTextOffsetOfRange(mRootContent, mFirstSelectedRange, &offset);
NS_ENSURE_SUCCESS(rv, rv);
if (offset == aEvent->mInput.mOffset) {
nsRect rect;
nsIFrame* caretFrame = caret->GetGeometry(mSelection, &rect);
if (!caretFrame)
return NS_ERROR_FAILURE;
rv = ConvertToRootViewRelativeOffset(caretFrame, rect);
NS_ENSURE_SUCCESS(rv, rv);
aEvent->mReply.mRect =
rect.ToOutsidePixels(caretFrame->PresContext()->AppUnitsPerDevPixel());
aEvent->mSucceeded = PR_TRUE;
return NS_OK;
}
}
// Otherwise, we should set the guessed caret rect.
nsCOMPtr<nsIRange> range = new nsRange();
NS_ENSURE_TRUE(range, NS_ERROR_OUT_OF_MEMORY);
rv = SetRangeFromFlatTextOffset(range, aEvent->mInput.mOffset, 0, PR_TRUE);
NS_ENSURE_SUCCESS(rv, rv);
PRInt32 offsetInFrame;
nsIFrame* frame;
rv = GetStartFrameAndOffset(range, &frame, &offsetInFrame);
NS_ENSURE_SUCCESS(rv, rv);
nsPoint posInFrame;
rv = frame->GetPointFromOffset(range->StartOffset(), &posInFrame);
NS_ENSURE_SUCCESS(rv, rv);
nsRect rect;
rect.x = posInFrame.x;
rect.y = posInFrame.y;
rect.width = caret->GetCaretRect().width;
rect.height = frame->GetSize().height;
rv = ConvertToRootViewRelativeOffset(frame, rect);
NS_ENSURE_SUCCESS(rv, rv);
aEvent->mReply.mRect =
rect.ToOutsidePixels(mPresContext->AppUnitsPerDevPixel());
aEvent->mSucceeded = PR_TRUE;
return NS_OK;
}
