758 lines
23 KiB
C++
758 lines
23 KiB
C++
#include "BufferPane.h"
|
|
|
|
BufferPane::BufferPane(Window * window, std::shared_ptr<Buffer> buffer)
|
|
: m_window(window), m_buffer(buffer)
|
|
{
|
|
m_cursor_screen_row = 0;
|
|
m_scroll_offset = 5;
|
|
m_iterator = buffer->add_cursor();
|
|
m_target_column = 0;
|
|
m_cursor_virtual_column = 0;
|
|
m_show_status_bar = true;
|
|
m_command_mode = false;
|
|
m_focused = false;
|
|
}
|
|
|
|
void BufferPane::resize(int width, int height)
|
|
{
|
|
Pane::resize(width, height);
|
|
m_columns = std::max(1, m_width / m_window->font()->get_advance());
|
|
int height_subtract = 0;
|
|
if (m_show_status_bar)
|
|
{
|
|
height_subtract = m_window->font()->get_line_height() + 1;
|
|
}
|
|
m_rows = std::max(1, (m_height - height_subtract) / m_window->font()->get_line_height());
|
|
}
|
|
|
|
void BufferPane::walk_line(const Buffer::Iterator & start_of_line, std::function<void(int, int, int, int, const Buffer::Iterator &)> callback)
|
|
{
|
|
int row_offset = 0;
|
|
int screen_column = 0;
|
|
int virtual_column = 0;
|
|
Buffer::Iterator i = start_of_line;
|
|
for (;;)
|
|
{
|
|
uint32_t code_point = *i;
|
|
if ((code_point == '\n') || (!i.valid()))
|
|
{
|
|
callback(row_offset, screen_column, virtual_column, 0, i);
|
|
break;
|
|
}
|
|
int c_width;
|
|
if (code_point == '\t')
|
|
{
|
|
uint8_t tabstop = m_buffer->tabstop();
|
|
c_width = tabstop - virtual_column % tabstop;
|
|
}
|
|
else
|
|
{
|
|
c_width = character_width(code_point);
|
|
if (((screen_column + c_width) > m_columns) &&
|
|
(screen_column > 0))
|
|
{
|
|
row_offset++;
|
|
screen_column = 0;
|
|
}
|
|
}
|
|
callback(row_offset, screen_column, virtual_column, c_width, i);
|
|
virtual_column += c_width;
|
|
if (code_point == '\t')
|
|
{
|
|
screen_column += c_width;
|
|
while (screen_column >= m_columns)
|
|
{
|
|
screen_column -= m_columns;
|
|
row_offset++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if ((screen_column + c_width) >= m_columns)
|
|
{
|
|
row_offset++;
|
|
screen_column = 0;
|
|
}
|
|
else
|
|
{
|
|
screen_column += c_width;
|
|
}
|
|
}
|
|
i.go_forward();
|
|
}
|
|
}
|
|
|
|
int BufferPane::calculate_rows_in_line(const Buffer::Iterator & start_of_line)
|
|
{
|
|
int saved_row_offset = 0;
|
|
walk_line(start_of_line, [&saved_row_offset](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
uint32_t code_point = *i;
|
|
if ((code_point != '\n') && (code_point != Buffer::Iterator::INVALID_CODE_POINT))
|
|
{
|
|
saved_row_offset = row_offset;
|
|
}
|
|
});
|
|
return saved_row_offset + 1;
|
|
}
|
|
|
|
int BufferPane::calculate_rows_in_cursor_line(const Buffer::Iterator & start_of_line)
|
|
{
|
|
int saved_row_offset = 0;
|
|
walk_line(start_of_line, [this, &saved_row_offset](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
uint32_t code_point = *i;
|
|
if (i == *m_iterator)
|
|
{
|
|
m_cursor_virtual_column = virtual_column;
|
|
m_cursor_screen_column = screen_column;
|
|
m_cursor_row_offset = row_offset;
|
|
}
|
|
if ((code_point != '\n') && (code_point != Buffer::Iterator::INVALID_CODE_POINT))
|
|
{
|
|
saved_row_offset = row_offset;
|
|
}
|
|
});
|
|
return saved_row_offset + 1;
|
|
}
|
|
|
|
int BufferPane::calculate_rows_in_line_with_iterator_offset(const Buffer::Iterator & start_of_line, const Buffer::Iterator & reference, int * iterator_row_offset)
|
|
{
|
|
int saved_row_offset = 0;
|
|
walk_line(start_of_line, [this, &saved_row_offset, &reference, &iterator_row_offset](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
uint32_t code_point = *i;
|
|
if (i == reference)
|
|
{
|
|
*iterator_row_offset = row_offset;
|
|
}
|
|
if ((code_point != '\n') && (code_point != Buffer::Iterator::INVALID_CODE_POINT))
|
|
{
|
|
saved_row_offset = row_offset;
|
|
}
|
|
});
|
|
return saved_row_offset + 1;
|
|
}
|
|
|
|
int BufferPane::screen_rows_below_line(const Buffer::Iterator & line)
|
|
{
|
|
Buffer::Iterator i = line;
|
|
int rows = 0;
|
|
while ((rows < m_rows) && i.go_next_line())
|
|
{
|
|
rows += calculate_rows_in_line(i);
|
|
}
|
|
return rows;
|
|
}
|
|
|
|
int BufferPane::screen_rows_above_line(const Buffer::Iterator & line, std::list<std::pair<int, Buffer::Iterator>> & backward_lines)
|
|
{
|
|
Buffer::Iterator i = line;
|
|
int rows = 0;
|
|
while ((rows < m_rows) && i.go_previous_line())
|
|
{
|
|
int rows_in_this_line = calculate_rows_in_line(i);
|
|
rows += rows_in_this_line;
|
|
backward_lines.push_back(std::pair<int, Buffer::Iterator>(rows_in_this_line, i));
|
|
}
|
|
return rows;
|
|
}
|
|
|
|
void BufferPane::update_cursor_row(std::list<std::pair<int, Buffer::Iterator>> & backward_lines)
|
|
{
|
|
Buffer::Iterator start_of_line = *m_iterator;
|
|
start_of_line.go_start_of_line();
|
|
int rows_in_cursor_line = calculate_rows_in_cursor_line(start_of_line);
|
|
int so = effective_scroll_offset();
|
|
int rows_above = screen_rows_above_line(*m_iterator, backward_lines) + m_cursor_row_offset;
|
|
int rows_below = screen_rows_below_line(*m_iterator) + std::max(0, rows_in_cursor_line - m_cursor_row_offset - 1);
|
|
int min_rows_to_leave_above = std::min(rows_above, so);
|
|
int min_rows_to_leave_below = std::min(rows_below, so);
|
|
m_cursor_screen_row = std::min(m_rows - min_rows_to_leave_below - 1, m_cursor_screen_row);
|
|
m_cursor_screen_row = std::max(min_rows_to_leave_above, m_cursor_screen_row);
|
|
m_cursor_screen_row = std::max(m_rows - rows_below - 1, m_cursor_screen_row);
|
|
m_cursor_screen_row = std::min(rows_above, m_cursor_screen_row);
|
|
}
|
|
|
|
bool BufferPane::move_cursor_screen_row_up()
|
|
{
|
|
size_t previous_iterator_offset = m_iterator->offset();
|
|
if (m_cursor_row_offset > 0)
|
|
{
|
|
Buffer::Iterator start_of_line = *m_iterator;
|
|
start_of_line.go_start_of_line();
|
|
walk_line(start_of_line, [this](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
if (((*i != '\n') || insert_mode()) &&
|
|
(screen_column <= m_cursor_screen_column) &&
|
|
(row_offset < m_cursor_row_offset))
|
|
{
|
|
*m_iterator = i;
|
|
}
|
|
});
|
|
}
|
|
else
|
|
{
|
|
if (!m_iterator->go_previous_line())
|
|
{
|
|
return false;
|
|
}
|
|
walk_line(*m_iterator, [this](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
if (((*i != '\n') || insert_mode()) &&
|
|
(screen_column <= m_cursor_screen_column))
|
|
{
|
|
*m_iterator = i;
|
|
}
|
|
});
|
|
}
|
|
return m_iterator->offset() != previous_iterator_offset;
|
|
}
|
|
|
|
bool BufferPane::move_cursor_screen_row_down()
|
|
{
|
|
size_t previous_iterator_offset = m_iterator->offset();
|
|
Buffer::Iterator start_of_line = *m_iterator;
|
|
start_of_line.go_start_of_line();
|
|
walk_line(start_of_line, [this](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
if (((*i != '\n') || insert_mode()) &&
|
|
(screen_column <= m_cursor_screen_column) &&
|
|
(row_offset > m_cursor_row_offset))
|
|
{
|
|
*m_iterator = i;
|
|
}
|
|
});
|
|
if (m_iterator->offset() != previous_iterator_offset)
|
|
{
|
|
return true;
|
|
}
|
|
if (!m_iterator->go_next_line())
|
|
{
|
|
return false;
|
|
}
|
|
walk_line(*m_iterator, [this](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
if (((*i != '\n') || insert_mode()) &&
|
|
(screen_column <= m_cursor_screen_column) &&
|
|
(row_offset == 0))
|
|
{
|
|
*m_iterator = i;
|
|
}
|
|
});
|
|
return m_iterator->offset() != previous_iterator_offset;
|
|
}
|
|
|
|
int BufferPane::determine_new_cursor_screen_row()
|
|
{
|
|
if (m_screen_lines.size() > 0)
|
|
{
|
|
if (m_iterator->line() < m_screen_lines.begin()->second.line())
|
|
{
|
|
return 0;
|
|
}
|
|
if (m_iterator->line() > m_screen_lines.rbegin()->second.line())
|
|
{
|
|
return m_rows;
|
|
}
|
|
for (auto screen_line : m_screen_lines)
|
|
{
|
|
if (screen_line.second.line() == m_iterator->line())
|
|
{
|
|
calculate_rows_in_cursor_line(screen_line.second);
|
|
return screen_line.first + m_cursor_row_offset;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void BufferPane::draw()
|
|
{
|
|
m_screen_lines.clear();
|
|
if (m_iterator->valid())
|
|
{
|
|
std::list<std::pair<int, Buffer::Iterator>> backward_lines;
|
|
update_cursor_row(backward_lines);
|
|
int screen_row = m_cursor_screen_row - m_cursor_row_offset;
|
|
Buffer::Iterator i = *m_iterator;
|
|
if (screen_row <= 0)
|
|
{
|
|
i.go_start_of_line();
|
|
}
|
|
else for (auto rows_iterator_pair : backward_lines)
|
|
{
|
|
screen_row -= rows_iterator_pair.first;
|
|
i = rows_iterator_pair.second;
|
|
if (screen_row <= 0)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
while (screen_row <= m_rows)
|
|
{
|
|
m_screen_lines.push_back(std::pair<int, Buffer::Iterator>(screen_row, i));
|
|
screen_row += draw_buffer_line(screen_row, i);
|
|
if (!i.go_next_line())
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
draw_cursor(col_x(0), row_y(0), 0, 1);
|
|
}
|
|
if (m_show_status_bar)
|
|
{
|
|
draw_status_bar();
|
|
}
|
|
}
|
|
|
|
int BufferPane::draw_buffer_line(int screen_row, const Buffer::Iterator & start_of_line)
|
|
{
|
|
int saved_row_offset = 0;
|
|
walk_line(start_of_line, [this, &saved_row_offset, &screen_row](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
uint32_t code_point = *i;
|
|
int draw_row = screen_row + row_offset;
|
|
if ((draw_row >= 0) && (draw_row <= m_rows))
|
|
{
|
|
if (i == *m_iterator)
|
|
{
|
|
bool wrap = (code_point == '\t');
|
|
int row = draw_row;
|
|
int col = screen_column;
|
|
int w = std::max(1, character_width);
|
|
for (int i = 0; i < w; i++)
|
|
{
|
|
draw_cursor(col_x(col), row_y(row), i, w);
|
|
col++;
|
|
if (wrap && (col >= m_columns))
|
|
{
|
|
row++;
|
|
col = 0;
|
|
}
|
|
}
|
|
}
|
|
draw_character(code_point, draw_row, screen_column);
|
|
if ((code_point != '\n') && (code_point != Buffer::Iterator::INVALID_CODE_POINT))
|
|
{
|
|
saved_row_offset = row_offset;
|
|
}
|
|
}
|
|
});
|
|
return saved_row_offset + 1;
|
|
}
|
|
|
|
void BufferPane::draw_character(uint32_t character, int screen_row, int screen_column)
|
|
{
|
|
if ((character != ' ') &&
|
|
(character != '\t') &&
|
|
(character != '\n') &&
|
|
(character != Buffer::Iterator::INVALID_CODE_POINT))
|
|
{
|
|
int x = col_x(screen_column);
|
|
int y = row_y(screen_row);
|
|
if (character < 0x20u)
|
|
{
|
|
m_window->gl()->draw_rect(win_x(x + 2), win_y(y),
|
|
m_window->font()->get_advance() * 2 - 4, 1,
|
|
0, 0.7, 1.0, 1.0);
|
|
m_window->gl()->draw_character(win_x(x), win_y(y), '^', *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
m_window->gl()->draw_character(win_x(col_x(screen_column + 1)), win_y(y), character | 0x40u, *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
}
|
|
else
|
|
{
|
|
m_window->gl()->draw_character(win_x(x), win_y(y), character, *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
}
|
|
}
|
|
}
|
|
|
|
int BufferPane::character_width(uint32_t character)
|
|
{
|
|
if (character < 0x20u)
|
|
{
|
|
return 2;
|
|
}
|
|
else if (character < 0x80u)
|
|
{
|
|
return 1u;
|
|
}
|
|
else
|
|
{
|
|
return std::max(1, m_window->font()->get_glyph(character)->get_advance() / m_window->font()->get_advance());
|
|
}
|
|
}
|
|
|
|
void BufferPane::draw_buffer_character(int screen_column, int screen_row, uint32_t character)
|
|
{
|
|
if (character < 0x20u)
|
|
{
|
|
m_window->gl()->draw_character(win_x(col_x(screen_column)), win_y(row_y(screen_row)),
|
|
'^', *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
m_window->gl()->draw_character(win_x(col_x(screen_column + 1)), win_y(row_y(screen_row)),
|
|
(character - 0x20u + 'A'), *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
}
|
|
else
|
|
{
|
|
m_window->gl()->draw_character(win_x(col_x(screen_column)), win_y(row_y(screen_row)),
|
|
character, *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
}
|
|
}
|
|
|
|
void BufferPane::draw_cursor(int x, int y, int i, int columns)
|
|
{
|
|
if (m_command_mode && (!m_focused))
|
|
{
|
|
return;
|
|
}
|
|
int width = m_window->font()->get_advance();
|
|
int height = m_window->font()->get_line_height();
|
|
if (insert_mode())
|
|
{
|
|
if (i == 0)
|
|
{
|
|
m_window->gl()->draw_rect(win_x(x), win_y(y), 1, height, 1.0, 0.2, 1.0, 1.0);
|
|
m_window->gl()->draw_rect(win_x(x + 1), win_y(y + height - 1), 2, 1, 1.0, 0.2, 1.0, 1.0);
|
|
m_window->gl()->draw_rect(win_x(x + 1), win_y(y), 2, 1, 1.0, 0.2, 1.0, 1.0);
|
|
}
|
|
}
|
|
else if (m_focused)
|
|
{
|
|
m_window->gl()->draw_rect(win_x(x), win_y(y), width, height, 1.0, 0.2, 1.0, 1.0);
|
|
}
|
|
else
|
|
{
|
|
m_window->gl()->draw_rect(win_x(x), win_y(y), width, 1, 1.0, 0.2, 1.0, 1.0);
|
|
m_window->gl()->draw_rect(win_x(x), win_y(y) + height - 1, width, 1, 1.0, 0.2, 1.0, 1.0);
|
|
if (i == 0)
|
|
{
|
|
m_window->gl()->draw_rect(win_x(x), win_y(y), 1, height, 1.0, 0.2, 1.0, 1.0);
|
|
}
|
|
if (i == (columns - 1))
|
|
{
|
|
m_window->gl()->draw_rect(win_x(x) + width - 1, win_y(y), 1, height, 1.0, 0.2, 1.0, 1.0);
|
|
}
|
|
}
|
|
}
|
|
|
|
void BufferPane::exit_insert_mode()
|
|
{
|
|
if (insert_mode())
|
|
{
|
|
m_buffer->exit_insert_mode();
|
|
if (!m_iterator->is_start_of_line())
|
|
{
|
|
m_iterator->go_back();
|
|
}
|
|
m_window->request_redraw();
|
|
}
|
|
}
|
|
|
|
void BufferPane::insert_code_point(uint32_t code_point)
|
|
{
|
|
if (insert_mode())
|
|
{
|
|
if (code_point == '\b') /* Backspace */
|
|
{
|
|
Buffer::Iterator i = *m_iterator;
|
|
i.go_back();
|
|
if (i.valid())
|
|
{
|
|
m_buffer->erase_code_point(i);
|
|
}
|
|
}
|
|
else if (code_point == 127) /* Delete */
|
|
{
|
|
m_buffer->erase_code_point(*m_iterator);
|
|
}
|
|
else
|
|
{
|
|
if (code_point == '\n')
|
|
{
|
|
m_cursor_screen_row++;
|
|
}
|
|
m_buffer->insert_code_point(*m_iterator, code_point);
|
|
}
|
|
m_window->request_redraw();
|
|
}
|
|
}
|
|
|
|
void BufferPane::kill_character_at_cursor()
|
|
{
|
|
if (**m_iterator != '\n')
|
|
{
|
|
m_buffer->erase_code_point(*m_iterator);
|
|
if (**m_iterator == '\n')
|
|
{
|
|
m_iterator->go_left_in_line();
|
|
}
|
|
m_window->request_redraw();
|
|
}
|
|
}
|
|
|
|
void BufferPane::write_file()
|
|
{
|
|
if (m_buffer->filename() != "")
|
|
{
|
|
m_buffer->write_to_file(m_buffer->filename().c_str());
|
|
}
|
|
}
|
|
|
|
size_t BufferPane::display_column() const
|
|
{
|
|
if (!m_iterator->valid())
|
|
{
|
|
return 0u;
|
|
}
|
|
if ((**m_iterator == '\n') && (!insert_mode()))
|
|
{
|
|
Buffer::Iterator i = *m_iterator;
|
|
if (!i.go_left_in_line())
|
|
{
|
|
return 0u;
|
|
}
|
|
}
|
|
return m_cursor_virtual_column + 1u;
|
|
}
|
|
|
|
void BufferPane::cursor_move(Window::CursorMovement which)
|
|
{
|
|
bool moved = false;
|
|
|
|
switch (which)
|
|
{
|
|
case Window::CursorMovement::LEFT:
|
|
moved = m_iterator->go_left_in_line();
|
|
break;
|
|
case Window::CursorMovement::RIGHT:
|
|
moved = m_iterator->go_right_in_line(insert_mode());
|
|
break;
|
|
case Window::CursorMovement::UP:
|
|
moved = m_iterator->go_previous_line();
|
|
break;
|
|
case Window::CursorMovement::DOWN:
|
|
moved = m_iterator->go_next_line();
|
|
break;
|
|
case Window::CursorMovement::SOL:
|
|
moved = m_iterator->go_start_of_line();
|
|
break;
|
|
case Window::CursorMovement::EOL:
|
|
moved = m_iterator->go_end_of_line(insert_mode());
|
|
break;
|
|
case Window::CursorMovement::FIRST_LINE:
|
|
{
|
|
auto it = m_buffer->begin();
|
|
if (it != *m_iterator)
|
|
{
|
|
*m_iterator = it;
|
|
moved = true;
|
|
}
|
|
}
|
|
break;
|
|
case Window::CursorMovement::LAST_LINE:
|
|
{
|
|
auto it = m_buffer->end();
|
|
it.go_back();
|
|
it.go_start_of_line();
|
|
if (it != *m_iterator)
|
|
{
|
|
*m_iterator = it;
|
|
moved = true;
|
|
}
|
|
}
|
|
break;
|
|
case Window::CursorMovement::SCREEN_ROW_UP:
|
|
moved = move_cursor_screen_row_up();
|
|
break;
|
|
case Window::CursorMovement::SCREEN_ROW_DOWN:
|
|
moved = move_cursor_screen_row_down();
|
|
break;
|
|
}
|
|
if (moved)
|
|
{
|
|
switch (which)
|
|
{
|
|
case Window::CursorMovement::LEFT:
|
|
case Window::CursorMovement::RIGHT:
|
|
{
|
|
Buffer::Iterator start_of_line = *m_iterator;
|
|
start_of_line.go_start_of_line();
|
|
calculate_rows_in_cursor_line(start_of_line);
|
|
m_target_column = m_cursor_virtual_column;
|
|
}
|
|
break;
|
|
case Window::CursorMovement::UP:
|
|
forward_to_column(m_target_column, insert_mode());
|
|
break;
|
|
case Window::CursorMovement::DOWN:
|
|
forward_to_column(m_target_column, insert_mode());
|
|
break;
|
|
case Window::CursorMovement::SOL:
|
|
m_target_column = 0;
|
|
break;
|
|
case Window::CursorMovement::EOL:
|
|
m_target_column = INT_MAX;
|
|
break;
|
|
case Window::CursorMovement::FIRST_LINE:
|
|
m_cursor_screen_row = 0;
|
|
break;
|
|
case Window::CursorMovement::LAST_LINE:
|
|
m_cursor_screen_row = m_rows;
|
|
break;
|
|
}
|
|
m_cursor_screen_row = determine_new_cursor_screen_row();
|
|
m_window->request_redraw();
|
|
}
|
|
}
|
|
|
|
void BufferPane::enter_insert_mode(Window::EnterInsertModeMode which)
|
|
{
|
|
if (insert_mode())
|
|
return;
|
|
|
|
switch (which)
|
|
{
|
|
case Window::EnterInsertModeMode::START_OF_CHAR:
|
|
m_buffer->enter_insert_mode();
|
|
break;
|
|
case Window::EnterInsertModeMode::END_OF_CHAR:
|
|
if (**m_iterator != '\n')
|
|
{
|
|
m_iterator->go_forward();
|
|
}
|
|
m_buffer->enter_insert_mode();
|
|
break;
|
|
case Window::EnterInsertModeMode::START_OF_LINE:
|
|
m_iterator->go_start_of_line();
|
|
enter_insert_mode(Window::EnterInsertModeMode::START_OF_CHAR);
|
|
break;
|
|
case Window::EnterInsertModeMode::END_OF_LINE:
|
|
m_iterator->go_end_of_line(false);
|
|
enter_insert_mode(Window::EnterInsertModeMode::END_OF_CHAR);
|
|
break;
|
|
case Window::EnterInsertModeMode::NEW_LINE_BEFORE:
|
|
m_iterator->go_start_of_line();
|
|
m_buffer->enter_insert_mode();
|
|
m_buffer->insert_code_point(*m_iterator, '\n');
|
|
m_buffer->exit_insert_mode();
|
|
cursor_move(Window::CursorMovement::UP);
|
|
enter_insert_mode(Window::EnterInsertModeMode::START_OF_CHAR);
|
|
break;
|
|
case Window::EnterInsertModeMode::NEW_LINE_AFTER:
|
|
m_iterator->go_end_of_line(true);
|
|
m_buffer->enter_insert_mode();
|
|
m_buffer->insert_code_point(*m_iterator, '\n');
|
|
break;
|
|
}
|
|
|
|
m_window->request_redraw();
|
|
}
|
|
|
|
int BufferPane::calculate_lines_to_scroll(Window::ScrollMode scroll_mode)
|
|
{
|
|
switch (scroll_mode)
|
|
{
|
|
case Window::ScrollMode::ONE_LINE:
|
|
return 1;
|
|
break;
|
|
case Window::ScrollMode::WHEEL:
|
|
return 3;
|
|
break;
|
|
case Window::ScrollMode::HALF_SCREEN:
|
|
return m_rows / 2;
|
|
break;
|
|
case Window::ScrollMode::WHOLE_SCREEN:
|
|
return m_rows - 1;
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void BufferPane::scroll_window_up(Window::ScrollMode scroll_mode)
|
|
{
|
|
int lines_to_scroll = calculate_lines_to_scroll(scroll_mode);
|
|
int so = effective_scroll_offset();
|
|
int lines_to_move_cursor = (so + lines_to_scroll) - (m_rows - m_cursor_screen_row - 1);
|
|
while (lines_to_move_cursor-- > 0)
|
|
{
|
|
move_cursor_screen_row_up();
|
|
}
|
|
m_cursor_screen_row += lines_to_scroll;
|
|
m_window->request_redraw();
|
|
}
|
|
|
|
void BufferPane::scroll_window_down(Window::ScrollMode scroll_mode)
|
|
{
|
|
int lines_to_scroll = calculate_lines_to_scroll(scroll_mode);
|
|
int so = effective_scroll_offset();
|
|
int lines_to_move_cursor = (so + lines_to_scroll) - m_cursor_screen_row;
|
|
while (lines_to_move_cursor-- > 0)
|
|
{
|
|
move_cursor_screen_row_down();
|
|
}
|
|
m_cursor_screen_row -= lines_to_scroll;
|
|
m_window->request_redraw();
|
|
}
|
|
|
|
void BufferPane::forward_to_column(int column, bool allow_eol)
|
|
{
|
|
Buffer::Iterator start_of_line = *m_iterator;
|
|
start_of_line.go_start_of_line();
|
|
walk_line(start_of_line, [this, &column, &allow_eol](int row_offset, int screen_column, int virtual_column, int character_width, const Buffer::Iterator & i) {
|
|
uint32_t code_point = *i;
|
|
if ((code_point != '\n') || allow_eol)
|
|
{
|
|
if (virtual_column <= column)
|
|
{
|
|
*m_iterator = i;
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
void BufferPane::draw_status_bar()
|
|
{
|
|
m_window->gl()->draw_rect(win_x(0), win_y(m_window->font()->get_line_height()), m_width, 1, 0.5, 0.5, 0.5, 1.0);
|
|
m_window->gl()->draw_rect(win_x(0), win_y(0), m_width, m_window->font()->get_line_height(), 0.0, 0.0, 0.0, 1.0);
|
|
char cursor_position[20];
|
|
sprintf(cursor_position, "%zu, %zu", display_line(), display_column());
|
|
int cursor_position_length = strlen(cursor_position);
|
|
int x = m_width - m_window->font()->get_advance() * cursor_position_length;
|
|
m_window->gl()->draw_rect(win_x(x - 2), win_y(0), 1, m_window->font()->get_line_height(), 0.5, 0.5, 0.5, 1.0);
|
|
std::string filename = m_buffer->filename();
|
|
if (filename == "")
|
|
{
|
|
filename = "[No Name]";
|
|
}
|
|
int filename_x = std::min(0, x - 3 - (int)filename.size() * m_window->font()->get_advance());
|
|
for (int i = 0; i < cursor_position_length; i++)
|
|
{
|
|
m_window->gl()->draw_character(win_x(x), win_y(0), cursor_position[i], *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
x += m_window->font()->get_advance();
|
|
}
|
|
for (size_t i = 0; i < filename.size(); i++)
|
|
{
|
|
m_window->gl()->draw_character(win_x(filename_x), win_y(0), filename[i], *m_window->font(), 1.0, 1.0, 1.0, 1.0);
|
|
filename_x += m_window->font()->get_advance();
|
|
}
|
|
}
|
|
|
|
void BufferPane::undo()
|
|
{
|
|
m_buffer->undo();
|
|
m_window->request_redraw();
|
|
}
|
|
|
|
void BufferPane::redo()
|
|
{
|
|
m_buffer->redo();
|
|
m_window->request_redraw();
|
|
}
|
|
|
|
void BufferPane::set_command_mode()
|
|
{
|
|
m_command_mode = true;
|
|
set_show_status_bar(false);
|
|
enter_insert_mode(Window::EnterInsertModeMode::START_OF_CHAR);
|
|
}
|
|
|
|
void BufferPane::clear()
|
|
{
|
|
m_buffer->clear();
|
|
*m_iterator = m_buffer->begin();
|
|
}
|