This changes the TUI source and disassembly windows to use a curses
pad for their text. This is an important step toward properly
handling non-ASCII characters, because it makes it easy to scroll
horizontally without needing gdb to also understand multi-byte
character boundaries -- this can be wholly delegated to curses.
Horizontal scrolling is probably also faster now, because no
re-rendering is required.
gdb/ChangeLog
2020-09-27 Tom Tromey <tom@tromey.com>
* unittests/tui-selftests.c: Update.
* tui/tui-winsource.h (struct tui_source_window_base)
<extra_margin, show_line_number, refresh_pad>: New methods.
<m_max_length, m_pad>: New members.
(tui_copy_source_line): Update.
* tui/tui-winsource.c (tui_copy_source_line): Remove line_no,
first_col, line_width, ndigits parameters. Add length.
(tui_source_window_base::show_source_line): Write to pad. Line
number now 0-based.
(tui_source_window_base::refresh_pad): New method.
(tui_source_window_base::show_source_content): Write to pad. Call
refresh_pad.
(tui_source_window_base::do_scroll_horizontal): Call refresh_pad,
not refill.
(tui_source_window_base::update_exec_info): Call
show_line_number.
* tui/tui-source.h (struct tui_source_window) <extra_margin>: New
method.
<m_digits>: New member.
* tui/tui-source.c (tui_source_window::set_contents): Set m_digits
and m_max_length.
(tui_source_window::show_line_number): New method.
* tui/tui-io.h (tui_puts): Fix comment.
* tui/tui-disasm.c (tui_disasm_window::set_contents): Set
m_max_length.
9e820dec13