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more horizontal scrolling fixes

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This commit is contained in:
Maxime Coste 2013-06-29 16:50:51 +02:00
parent e510bf8b96
commit 2dcdc0cf4b
1 changed files with 16 additions and 19 deletions
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33
src/window.cc
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@ -112,7 +112,6 @@ void Window::scroll_to_keep_cursor_visible_ifn()
{
const auto& first = main_selection().first();
const auto& last = main_selection().last();
const String& content = buffer()[last.line];
const LineCount offset = std::min<LineCount>(options()["scrolloff"].get<int>(),
(m_dimensions.line - 1) / 2);
@ -138,30 +137,28 @@ void Window::scroll_to_keep_cursor_visible_ifn()
// (this is only valid if highlighting one line and multiple lines put
// the cursor in the same position, however I do not find any sane example
// of highlighters not doing that)
CharCount column = 0;
auto cursor = buffer().iterator_at(last);
CharCount buffer_column = 0;
CharCount non_buffer_column = 0;
for (auto& atom : lines.back())
{
if (atom.content.has_buffer_range() and
atom.content.begin() <= last and atom.content.end() > last)
if (atom.content.has_buffer_range())
{
column += atom.content.length();
if (atom.content.begin() <= last and atom.content.end() > last)
{
if (buffer_column < m_position.column)
m_position.column = buffer_column;
auto first_col = (first.line == last.line) ? content.char_count_to(first.column) : 0_char;
auto last_col = content.char_count_to(last.column);
if (first_col < m_position.column)
m_position.column = first_col;
else if (column >= m_position.column + m_dimensions.column)
m_position.column = column - m_dimensions.column;
if (last_col < m_position.column)
m_position.column = last_col;
else if (column >= m_position.column + m_dimensions.column)
m_position.column = column - m_dimensions.column;
auto last_column = buffer_column + atom.content.length();
if (last_column >= m_position.column + m_dimensions.column - non_buffer_column)
m_position.column = last_column - m_dimensions.column + non_buffer_column;
return;
}
column += atom.content.content().char_length();
buffer_column += atom.content.length();
}
else
non_buffer_column += atom.content.length();
}
if (not buffer().is_end(last))
{