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Add optional full_window argument to TuiWindow.write

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To prevent flickering when first calling erase, then write, this new
argument indicates that the passed string contains the full contents of
the window.  This fills every unused cell of the window with a space, so
it's not necessary to call erase beforehand.

gdb/ChangeLog:

2021-05-27  Hannes Domani  <ssbssa@yahoo.de>

	* python/py-tui.c (tui_py_window::output): Add full_window
	argument.
	(gdbpy_tui_write): Parse "full_window" argument.

gdb/doc/ChangeLog:

2021-05-27  Hannes Domani  <ssbssa@yahoo.de>

	* python.texi (TUI Windows In Python): Document "full_window"
	argument.
This commit is contained in:
Hannes Domani
2020-11-22 16:51:30 +01:00
parent d5a6313e1c
commit bdef572304
4 changed files with 30 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2021-05-27 Hannes Domani <ssbssa@yahoo.de>
* python/py-tui.c (tui_py_window::output): Add full_window
argument.
(gdbpy_tui_write): Parse "full_window" argument.
2021-05-27 Simon Marchi <simon.marchi@polymtl.ca>
* make-init-c: Add option to reverse function calls.

5
gdb/doc/ChangeLog
View File

@ -1,3 +1,8 @@
2021-05-27 Hannes Domani <ssbssa@yahoo.de>
* python.texi (TUI Windows In Python): Document "full_window"
argument.
2021-05-27 Hannes Domani <ssbssa@yahoo.de>
* python.texi (Symbols In Python): Document gdb.SYMBOL_LOC_LABEL.

6
gdb/doc/python.texi
View File

@ -5959,10 +5959,14 @@ displayed above the window. This attribute can be modified.
Remove all the contents of the window.
@end defun
@defun TuiWindow.write (@var{string})
@defun TuiWindow.write (@var{string} @r{[}, @var{full_window}@r{]})
Write @var{string} to the window. @var{string} can contain ANSI
terminal escape styling sequences; @value{GDBN} will translate these
as appropriate for the terminal.
If the @var{full_window} parameter is @code{True}, then @var{string}
contains the full contents of the window. This is similar to calling
@code{erase} before @code{write}, but avoids the flickering.
@end defun
The factory function that you supply should return an object

18
gdb/python/py-tui.c
View File

@ -111,8 +111,9 @@ public:
}
}
/* Write STR to the window. */
void output (const char *str);
/* Write STR to the window. FULL_WINDOW is true to erase the window
contents beforehand. */
void output (const char *str, bool full_window);
/* A helper function to compute the viewport width. */
int viewport_width () const
@ -229,11 +230,17 @@ tui_py_window::do_scroll_vertical (int num_to_scroll)
}
void
tui_py_window::output (const char *text)
tui_py_window::output (const char *text, bool full_window)
{
if (m_inner_window != nullptr)
{
if (full_window)
werase (m_inner_window.get ());
tui_puts (text, m_inner_window.get ());
if (full_window)
check_and_display_highlight_if_needed ();
else
tui_wrefresh (m_inner_window.get ());
}
}
@ -405,13 +412,14 @@ gdbpy_tui_write (PyObject *self, PyObject *args)
{
gdbpy_tui_window *win = (gdbpy_tui_window *) self;
const char *text;
int full_window = 0;
if (!PyArg_ParseTuple (args, "s", &text))
if (!PyArg_ParseTuple (args, "s|i", &text, &full_window))
return nullptr;
REQUIRE_WINDOW (win);
win->window->output (text);
win->window->output (text, full_window);
Py_RETURN_NONE;
}