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https://github.com/RGBCube/serenity
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Terminal: Implement scroll region termcodes
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parent
ab004f73bf
commit
ce15a4021d
3 changed files with 80 additions and 6 deletions
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@ -254,7 +254,13 @@ void Terminal::escape$r(const ParamVector& params)
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top = params[0];
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if (params.size() >= 2)
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bottom = params[1];
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dbgprintf("FIXME: escape$r: Set scrolling region: %u-%u\n", top, bottom);
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if ((bottom - top) < 2 || bottom > m_rows) {
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dbgprintf("Error: escape: scrolling region invalid: %u-%u\n", top, bottom);
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return;
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}
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m_scroll_region_top = top;
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m_scroll_region_bottom = bottom;
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set_cursor(0, 0);
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}
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void Terminal::escape$H(const ParamVector& params)
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@ -415,6 +421,42 @@ void Terminal::escape$J(const ParamVector& params)
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}
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}
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void Terminal::escape$S(const ParamVector& params)
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{
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int count = 1;
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if (params.size() >= 1)
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count = params[0];
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dbgprintf("Terminal: Scrolling up %d lines\n", count);
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for (word i = 0; i < count; i++)
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scroll_up();
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}
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void Terminal::escape$T(const ParamVector& params)
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{
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int count = 1;
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if (params.size() >= 1)
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count = params[0];
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dbgprintf("Terminal: Scrolling down %d lines\n", count);
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for (word i = 0; i < count; i++)
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scroll_down();
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}
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void Terminal::escape$L(const ParamVector& params)
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{
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int count = 1;
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if (params.size() >= 1)
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count = params[0];
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dbgprintf("Terminal: Adding %d lines below cursor (at line %d)\n", count, m_cursor_row);
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invalidate_cursor();
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for (word row = m_rows; row > m_cursor_row; --row)
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m_lines[row] = m_lines[row - 1];
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m_lines[m_cursor_row] = new Line(m_columns);
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++m_rows_to_scroll_backing_store;
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m_need_full_flush = true;
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}
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void Terminal::escape$M(const ParamVector& params)
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{
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int count = 1;
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@ -430,8 +472,11 @@ void Terminal::escape$M(const ParamVector& params)
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count = min(count, max_count);
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dbgprintf("Delete %d line(s) starting from %d\n", count, m_cursor_row);
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// FIXME: Implement.
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ASSERT_NOT_REACHED();
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for (word i = 0; i < count; ++i)
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delete m_lines[m_cursor_row + i];
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for (word row = m_cursor_row + count + 1; row < rows(); ++row)
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m_lines[row - 1] = m_lines[row];
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m_lines[m_rows - 1]->clear(m_current_attribute);
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}
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void Terminal::execute_xterm_command()
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@ -480,6 +525,9 @@ void Terminal::execute_escape_sequence(byte final)
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case 'J': escape$J(params); break;
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case 'K': escape$K(params); break;
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case 'M': escape$M(params); break;
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case 'S': escape$S(params); break;
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case 'T': escape$T(params); break;
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case 'L': escape$L(params); break;
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case 'G': escape$G(params); break;
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case 'X': escape$X(params); break;
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case 'd': escape$d(params); break;
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@ -512,14 +560,25 @@ void Terminal::scroll_up()
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{
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// NOTE: We have to invalidate the cursor first.
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invalidate_cursor();
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delete m_lines[0];
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for (word row = 1; row < rows(); ++row)
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delete m_lines[m_scroll_region_top];
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for (word row = m_scroll_region_top + 1; row < m_scroll_region_bottom; ++row)
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m_lines[row - 1] = m_lines[row];
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m_lines[m_rows - 1] = new Line(m_columns);
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m_lines[m_scroll_region_bottom - 1] = new Line(m_columns);
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++m_rows_to_scroll_backing_store;
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m_need_full_flush = true;
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}
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void Terminal::scroll_down()
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{
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// NOTE: We have to invalidate the cursor first.
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invalidate_cursor();
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for (word row = m_scroll_region_bottom; row > m_scroll_region_top; --row)
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m_lines[row] = m_lines[row - 1];
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m_lines[m_scroll_region_top] = new Line(m_columns);
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--m_rows_to_scroll_backing_store;
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m_need_full_flush = true;
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}
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void Terminal::set_cursor(unsigned a_row, unsigned a_column)
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{
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unsigned row = min(a_row, m_rows - 1u);
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@ -718,6 +777,9 @@ void Terminal::set_size(word columns, word rows)
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m_columns = columns;
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m_rows = rows;
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m_scroll_region_top = 0;
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m_scroll_region_bottom = rows;
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m_cursor_row = 0;
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m_cursor_column = 0;
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m_saved_cursor_row = 0;
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@ -825,6 +887,9 @@ void Terminal::keydown_event(GKeyEvent& event)
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case KeyCode::Key_End:
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write(m_ptm_fd, "\033[F", 3);
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break;
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case KeyCode::Key_RightShift:
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dbgprintf("Terminal: A wild Right Shift key is pressed. Not handled.\n");
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break;
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default:
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write(m_ptm_fd, &ch, 1);
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break;
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