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Only make cursor visible after buffer or selection change

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Kakoune now does not touch cursors when scrolling. It checks
if either the buffer or selections has been modified since
last redraw.

Fixes #4124
Fixes #2844
This commit is contained in:
Maxime Coste 2023-08-12 13:40:55 +10:00
parent 6942a4c0c9
commit 1e38045d70
10 changed files with 84 additions and 58 deletions
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24
src/context.hh
View File

@ -144,6 +144,7 @@ public:
void repeat_last_select() { if (m_last_select) m_last_select(*this); }
Buffer* last_buffer() const;
private:
void begin_edition();
void end_edition();
@ -215,9 +216,16 @@ struct ScopedEdition
ScopedEdition(Context& context)
: m_context{context},
m_buffer{context.has_buffer() ? &context.buffer() : nullptr}
{ if (m_buffer) m_context.begin_edition(); }
{
if (m_buffer)
m_context.begin_edition();
}
~ScopedEdition() { if (m_buffer) m_context.end_edition(); }
~ScopedEdition()
{
if (m_buffer)
m_context.end_edition();
}
Context& context() const { return m_context; }
private:
@ -230,11 +238,19 @@ struct ScopedSelectionEdition
ScopedSelectionEdition(Context& context)
: m_context{context},
m_buffer{not (m_context.flags() & Context::Flags::Draft) and context.has_buffer() ? &context.buffer() : nullptr}
{ if (m_buffer) m_context.m_selection_history.begin_edition(); }
{
if (m_buffer)
m_context.m_selection_history.begin_edition();
}
ScopedSelectionEdition(ScopedSelectionEdition&& other) : m_context{other.m_context}, m_buffer{other.m_buffer}
{ other.m_buffer = nullptr; }
~ScopedSelectionEdition() { if (m_buffer) m_context.m_selection_history.end_edition(); }
~ScopedSelectionEdition()
{
if (m_buffer)
m_context.m_selection_history.end_edition();
}
private:
Context& m_context;
SafePtr<Buffer> m_buffer;

1
src/highlighter.hh
View File

@ -46,6 +46,7 @@ struct DisplaySetup
DisplayCoord cursor_pos;
// Offset of line and columns that must remain visible around cursor
DisplayCoord scroll_offset;
bool ensure_cursor_visible;
};
using HighlighterIdList = ConstArrayView<StringView>;

6
src/highlighters.cc
View File

@ -752,7 +752,8 @@ struct WrapHighlighter : Highlighter
win_line += wrap_count + 1;
// scroll window to keep cursor visible, and update range as lines gets removed
while (buf_line >= cursor.line and setup.first_line < cursor.line and
while (setup.ensure_cursor_visible and
buf_line >= cursor.line and setup.first_line < cursor.line and
setup.cursor_pos.line + setup.scroll_offset.line >= win_height)
{
auto remove_count = 1 + line_wrap_count(setup.first_line, indent);
@ -1660,7 +1661,8 @@ private:
setup.cursor_pos.column += cursor_move;
}
if (last.line >= setup.first_line and
if (setup.ensure_cursor_visible and
last.line >= setup.first_line and
range.first.line <= setup.first_line + setup.line_count and
range.first.line != last.line)
{

10
src/input_handler.cc
View File

@ -1870,25 +1870,27 @@ void scroll_window(Context& context, LineCount offset, bool mouse_dragging)
win_pos.line = clamp(win_pos.line + offset, 0_line, line_count-1);
window.set_position(win_pos);
if (mouse_dragging)
{
ScopedSelectionEdition selection_edition{context};
SelectionList& selections = context.selections();
Selection& main_selection = selections.main();
const BufferCoord anchor = main_selection.anchor();
const BufferCoordAndTarget cursor = main_selection.cursor();
auto cursor_off = mouse_dragging ? win_pos.line - window.position().line : 0;
auto cursor_off = win_pos.line - window.position().line;
auto line = clamp(cursor.line + cursor_off, win_pos.line + scrolloff.line,
win_pos.line + win_dim.line - 1 - scrolloff.line);
const ColumnCount tabstop = context.options()["tabstop"].get<int>();
auto new_cursor = buffer.offset_coord(cursor, line - cursor.line, tabstop);
BufferCoord new_anchor = (mouse_dragging or new_cursor == cursor) ? anchor : new_cursor;
window.set_position(win_pos);
main_selection = { new_anchor, new_cursor };
main_selection = { anchor, new_cursor };
selections.sort_and_merge_overlapping();
}
}
}

2
src/normal.cc
View File

@ -848,7 +848,7 @@ void regex_prompt(Context& context, String prompt, char reg, T func)
{
selections.update();
context.selections_write_only() = selections;
if (context.has_window())
if (context.has_window() and event != PromptEvent::Validate)
context.window().set_position(position);
context.input_handler().set_prompt_face(context.faces()["Prompt"]);

43
src/window.cc
View File

@ -85,37 +85,34 @@ static uint32_t compute_faces_hash(const FaceRegistry& faces)
Window::Setup Window::build_setup(const Context& context) const
{
Vector<BufferRange, MemoryDomain::Display> selections;
for (auto& sel : context.selections())
selections.push_back({sel.cursor(), sel.anchor()});
return { m_position, m_dimensions,
return {m_position, m_dimensions,
context.buffer().timestamp(),
compute_faces_hash(context.faces()),
context.selections().main_index(),
std::move(selections) };
context.selections() | gather<Vector<BasicSelection, MemoryDomain::Display>>()};
}
bool Window::needs_redraw(const Context& context) const
{
auto& selections = context.selections();
if (m_position != m_last_setup.position or
return m_position != m_last_setup.position or
m_dimensions != m_last_setup.dimensions or
context.buffer().timestamp() != m_last_setup.timestamp or
selections.main_index() != m_last_setup.main_selection or
selections.size() != m_last_setup.selections.size() or
compute_faces_hash(context.faces()) != m_last_setup.faces_hash)
return true;
compute_faces_hash(context.faces()) != m_last_setup.faces_hash or
not std::equal(selections.begin(), selections.end(),
m_last_setup.selections.begin(), m_last_setup.selections.end());
}
for (int i = 0; i < selections.size(); ++i)
{
if (selections[i].cursor() != m_last_setup.selections[i].begin or
selections[i].anchor() != m_last_setup.selections[i].end)
return true;
}
return false;
bool Window::should_make_cursor_visible(const Context& context) const
{
auto& selections = context.selections();
return context.buffer().timestamp() != m_last_setup.timestamp or
selections.main_index() != m_last_setup.main_selection or
selections.size() != m_last_setup.selections.size() or
not std::equal(selections.begin(), selections.end(),
m_last_setup.selections.begin(), m_last_setup.selections.end());
}
const DisplayBuffer& Window::update_display_buffer(const Context& context)
@ -215,11 +212,15 @@ DisplaySetup Window::compute_display_setup(const Context& context) const
const int tabstop = context.options()["tabstop"].get<int>();
const auto& cursor = context.selections().main().cursor();
// Ensure cursor line is visible
bool ensure_cursor_visible = should_make_cursor_visible(context);
if (ensure_cursor_visible)
{
if (cursor.line - offset.line < win_pos.line)
win_pos.line = std::max(0_line, cursor.line - offset.line);
if (cursor.line + offset.line >= win_pos.line + m_dimensions.line)
win_pos.line = std::min(buffer().line_count()-1, cursor.line + offset.line - m_dimensions.line + 1);
}
DisplaySetup setup{
win_pos.line,
@ -228,13 +229,15 @@ DisplaySetup Window::compute_display_setup(const Context& context) const
0_col,
{cursor.line - win_pos.line,
get_column(buffer(), tabstop, cursor) - win_pos.column},
offset
offset,
ensure_cursor_visible
};
for (auto pass : { HighlightPass::Move, HighlightPass::Wrap })
m_builtin_highlighters.compute_display_setup({context, setup, pass, {}}, setup);
check_display_setup(setup, *this);
// now ensure the cursor column is visible
if (ensure_cursor_visible)
{
auto underflow = std::max(-setup.first_column,
setup.cursor_pos.column - setup.scroll_offset.column);

6
src/window.hh
View File

@ -43,7 +43,7 @@ public:
Buffer& buffer() const { return *m_buffer; }
bool needs_redraw(const Context& context) const;
void force_redraw() { m_last_setup = Setup{}; }
void force_redraw() { m_last_setup.dimensions = {}; }
void set_client(Client* client) { m_client = client; }
@ -60,6 +60,8 @@ private:
void run_hook_in_own_context(Hook hook, StringView param,
String client_name = "");
bool should_make_cursor_visible(const Context& context) const;
SafePtr<Buffer> m_buffer;
SafePtr<Client> m_client;
@ -77,7 +79,7 @@ private:
size_t timestamp;
size_t faces_hash;
size_t main_selection;
Vector<BufferRange, MemoryDomain::Display> selections;
Vector<BasicSelection, MemoryDomain::Display> selections;
};
Setup build_setup(const Context& context) const;
Setup m_last_setup;

4
test/regression/3219-scroll-json-ui/script
View File

@ -6,8 +6,8 @@ ui_out '{ "jsonrpc": "2.0", "method": "draw_status", "params": [[], [{ "face": {
ui_out '{ "jsonrpc": "2.0", "method": "set_cursor", "params": ["buffer", { "line": 0, "column": 0 }] }'
ui_out '{ "jsonrpc": "2.0", "method": "refresh", "params": [true] }'
ui_in '{ "jsonrpc": "2.0", "method": "scroll", "params": [ 2 ] }'
ui_out '{ "jsonrpc": "2.0", "method": "draw", "params": [[[{ "face": { "fg": "black", "bg": "white", "underline": "default", "attributes": [] }, "contents": "0" }, { "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "3\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "04\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "05\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "06\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "07\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "08\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "09\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "10\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "11\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "12\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "13\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "14\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "15\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "16\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "17\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "18\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "19\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "20\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "21\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "22\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "23\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "24\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "25\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "26\u000a" }]], { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, { "fg": "blue", "bg": "default", "underline": "default", "attributes": [] }] }'
ui_out '{ "jsonrpc": "2.0", "method": "draw", "params": [[[{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "03\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "04\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "05\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "06\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "07\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "08\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "09\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "10\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "11\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "12\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "13\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "14\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "15\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "16\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "17\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "18\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "19\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "20\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "21\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "22\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "23\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "24\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "25\u000a" }], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "26\u000a" }]], { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, { "fg": "blue", "bg": "default", "underline": "default", "attributes": [] }] }'
ui_out '{ "jsonrpc": "2.0", "method": "info_hide", "params": [] }'
ui_out '{ "jsonrpc": "2.0", "method": "draw_status", "params": [[], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "out 3:1 " }, { "face": { "fg": "black", "bg": "yellow", "underline": "default", "attributes": [] }, "contents": "" }, { "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": " " }, { "face": { "fg": "blue", "bg": "default", "underline": "default", "attributes": [] }, "contents": "1 sel" }, { "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": " - client0@[kak-tests]" }], { "fg": "cyan", "bg": "default", "underline": "default", "attributes": [] }] }'
ui_out '{ "jsonrpc": "2.0", "method": "draw_status", "params": [[], [{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "out 1:1 " }, { "face": { "fg": "black", "bg": "yellow", "underline": "default", "attributes": [] }, "contents": "" }, { "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": " " }, { "face": { "fg": "blue", "bg": "default", "underline": "default", "attributes": [] }, "contents": "1 sel" }, { "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": " - client0@[kak-tests]" }], { "fg": "cyan", "bg": "default", "underline": "default", "attributes": [] }] }'
ui_out '{ "jsonrpc": "2.0", "method": "set_cursor", "params": ["buffer", { "line": 0, "column": 0 }] }'
ui_out '{ "jsonrpc": "2.0", "method": "refresh", "params": [false] }'

2
test/regression/4839-scroll-invalid-cursor/cmd
View File

@ -1 +1 @@
l<pagedown>
l<c-l><pagedown>

4
test/regression/4839-scroll-invalid-cursor/script
View File

@ -1,2 +1,2 @@
ui_out -ignore 1
ui_out '{ "jsonrpc": "2.0", "method": "draw", "params": [[[{ "face": { "fg": "black", "bg": "white", "underline": "default", "attributes": [] }, "contents": "😃" }, { "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "\u000a" }]], { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, { "fg": "blue", "bg": "default", "underline": "default", "attributes": [] }] }'
ui_out -ignore 7
ui_out '{ "jsonrpc": "2.0", "method": "draw", "params": [[[{ "face": { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, "contents": "😃\u000a" }]], { "fg": "default", "bg": "default", "underline": "default", "attributes": [] }, { "fg": "blue", "bg": "default", "underline": "default", "attributes": [] }] }'