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Ref T709, use std::advance for message iterator

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This commit is contained in:
Klaus Basan
2019-08-15 22:45:32 +02:00
parent e78ad0e0d1
commit 0e285b6cd6
1 changed files with 8 additions and 2 deletions
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10
src/xswiftbus/messages.cpp
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@@ -169,8 +169,14 @@ namespace XSwiftBus
void CMessageBoxControl::updateVisibleLines() void CMessageBoxControl::updateVisibleLines()
{ {
const size_t lines = std::min(m_messages.size(), m_maxVisibleLines); const size_t lines = std::min(m_messages.size(), m_maxVisibleLines);
const auto end = m_messages.cbegin() + m_position; // const auto end = m_messages.cbegin() + m_position;
m_messageBox.setMessages(end - lines, end); // m_messageBox.setMessages(end - lines, end);
auto end = m_messages.begin();
std::advance(end, m_position);
auto start = end;
std::advance(start, -1 * static_cast<int>(lines));
m_messageBox.setMessages(start, end);
m_messageBox.enableArrows(m_position > lines, m_position < m_messages.size()); m_messageBox.enableArrows(m_position > lines, m_position < m_messages.size());
} }
} }