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From 8bfdd84ffcffe19aa6c495a0772e1a5fcb9a5124 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Caol=C3=A1n=20McNamara?= <caolanm@redhat.com>
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Date: Fri, 25 Sep 2020 11:22:03 +0100
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Subject: [PATCH] rhbz#1882616 move cursor one step at a time in the desired
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direction
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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until we get to the target position. The break iterator operates in graphemes
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so we can't just move Left/Right the amount of utf-16 we want to move.
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Change-Id: I25d4e9285deae374f85dcaadbf4601bc213a89de
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Reviewed-on: https://gerrit.libreoffice.org/c/core/+/103380
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Tested-by: Jenkins
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Reviewed-by: Caolán McNamara <caolanm@redhat.com>
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(cherry picked from commit bf858622e543163a23db766912ea6b121f447e6d)
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---
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sw/source/core/edit/editsh.cxx | 40 +++++++++++++++++++++++++++++-----
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1 file changed, 35 insertions(+), 5 deletions(-)
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diff --git a/sw/source/core/edit/editsh.cxx b/sw/source/core/edit/editsh.cxx
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index 8f84ce42ed75..872d92d7afcc 100644
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--- a/sw/source/core/edit/editsh.cxx
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+++ b/sw/source/core/edit/editsh.cxx
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@@ -988,7 +988,8 @@ OUString SwEditShell::DeleteExtTextInput( bool bInsText )
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void SwEditShell::SetExtTextInputData( const CommandExtTextInputData& rData )
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{
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- const SwPosition& rPos = *GetCursor()->GetPoint();
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+ SwPaM* pCurrentCursor = GetCursor();
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+ const SwPosition& rPos = *pCurrentCursor->GetPoint();
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SwExtTextInput* pInput = GetDoc()->GetExtTextInput( rPos.nNode.GetNode() );
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if( !pInput )
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return;
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@@ -1005,10 +1006,39 @@ void SwEditShell::SetExtTextInputData( const CommandExtTextInputData& rData )
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// ugly but works
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ShowCursor();
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const sal_Int32 nDiff = nNewCursorPos - rPos.nContent.GetIndex();
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- if( 0 > nDiff )
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- Left( -nDiff, CRSR_SKIP_CHARS );
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- else if( 0 < nDiff )
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- Right( nDiff, CRSR_SKIP_CHARS );
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+ if( nDiff != 0)
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+ {
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+ bool bLeft = nDiff < 0;
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+ sal_Int32 nMaxGuard = std::abs(nDiff);
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+ while (true)
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+ {
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+ auto nOldPos = pCurrentCursor->GetPoint()->nContent.GetIndex();
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+ if (bLeft)
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+ Left(1, CRSR_SKIP_CHARS);
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+ else
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+ Right(1, CRSR_SKIP_CHARS);
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+ auto nNewPos = pCurrentCursor->GetPoint()->nContent.GetIndex();
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+
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+ // expected success
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+ if (nNewPos == nNewCursorPos)
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+ break;
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+
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+ if (nNewPos == nOldPos)
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+ {
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+ // if there was no movement, we have failed for some reason
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+ SAL_WARN("sw.core", "IM cursor move failed");
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+ break;
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+ }
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+
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+ if (--nMaxGuard == 0)
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+ {
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+ // if it takes more cursor moves than there are utf-16 chars to move past
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+ // something has probably gone wrong
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+ SAL_WARN("sw.core", "IM abandoning cursor positioning");
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+ break;
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+ }
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+ }
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+ }
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SetOverwriteCursor( rData.IsCursorOverwrite() );
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--
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2.29.2
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