[review v2] Allow using less horizontal space in TUI source window
Tom Tromey (Code Review)
gerrit@gnutoolchain-gerrit.osci.io
Fri Nov 22 23:54:00 GMT 2019
Change URL: https://gnutoolchain-gerrit.osci.io/r/c/binutils-gdb/+/605
......................................................................
Allow using less horizontal space in TUI source window
The source window currently uses a field width of 6 for line numbers,
and it further aligns to the next tab stop. This seemed a bit
wasteful of horizontal space to me, so I changed that in an earlier
patch.
However, that change wasn't universally popular. This patch instead
adds the option to use less horizontal space in the TUI source window.
gdb/ChangeLog
2019-11-22 Tom Tromey <tom@tromey.com>
* tui/tui-winsource.h (tui_copy_source_line): Add "ndigits"
parameter.
* tui/tui-winsource.c (tui_copy_source_line): Add "ndigits"
parameter.
* tui/tui-win.h (compact_source): Declare.
* tui/tui-win.c (compact_source): New global.
(tui_set_compact_source, tui_show_compact_source): New functions.
(_initialize_tui_win): Add "compact-source" setting.
* tui/tui-source.c (tui_source_window::set_contents): Handle
compact_source setting.
* tui/tui-disasm.c (tui_disasm_window::set_contents): Update.
* NEWS: Document new setting.
gdb/doc/ChangeLog
2019-11-22 Tom Tromey <tom@tromey.com>
* gdb.texinfo (TUI Configuration): Document new setting.
Change-Id: I46ce9a68b12c9c79332d510f9c14b3c84b7efadd
---
M gdb/ChangeLog
M gdb/NEWS
M gdb/doc/ChangeLog
M gdb/doc/gdb.texinfo
M gdb/tui/tui-disasm.c
M gdb/tui/tui-source.c
M gdb/tui/tui-win.c
M gdb/tui/tui-win.h
M gdb/tui/tui-winsource.c
M gdb/tui/tui-winsource.h
10 files changed, 102 insertions(+), 11 deletions(-)
diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 65da2ff..9c961ea 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,20 @@
2019-11-22 Tom Tromey <tom@tromey.com>
+ * tui/tui-winsource.h (tui_copy_source_line): Add "ndigits"
+ parameter.
+ * tui/tui-winsource.c (tui_copy_source_line): Add "ndigits"
+ parameter.
+ * tui/tui-win.h (compact_source): Declare.
+ * tui/tui-win.c (compact_source): New global.
+ (tui_set_compact_source, tui_show_compact_source): New functions.
+ (_initialize_tui_win): Add "compact-source" setting.
+ * tui/tui-source.c (tui_source_window::set_contents): Handle
+ compact_source setting.
+ * tui/tui-disasm.c (tui_disasm_window::set_contents): Update.
+ * NEWS: Document new setting.
+
+2019-11-22 Tom Tromey <tom@tromey.com>
+
* observable.h: Update comments.
2019-11-22 Tom Tromey <tromey@adacore.com>
diff --git a/gdb/NEWS b/gdb/NEWS
index b0f5447..4c28e2e 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -168,6 +168,14 @@
'frame', 'stepi'. The python frame filtering also respect this setting.
The 'backtrace' '-frame-info' option can override this global setting.
+set tui compact-source
+show tui compact-source
+
+ Enable the "compact" display mode for the TUI source window. The
+ compact display uses only as much space as is needed for the line
+ numbers in the current file, and only a single space to separate the
+ line numbers from the source.
+
info modules [-q] [REGEXP]
Return a list of Fortran modules matching REGEXP, or all modules if
no REGEXP is given.
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 2571839..7c5163d 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,7 @@
+2019-11-22 Tom Tromey <tom@tromey.com>
+
+ * gdb.texinfo (TUI Configuration): Document new setting.
+
2019-11-14 Tom de Vries <tdevries@suse.de>
* gdb.texinfo: Fix typos.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index c66a39c..2545fdc 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -27963,6 +27963,14 @@
Set the width of tab stops to be @var{nchars} characters. This
setting affects the display of TAB characters in the source and
assembly windows.
+
+@item set tui compact-source @r{[}on@r{|}off@r{]}
+@kindex set tui compact-source
+Set whether the TUI source window is displayed in ``compact'' form.
+The default display uses more space for line numbers and starts the
+source text at the next tab stop; the compact display uses only as
+much space as is needed for the line numbers in the current file, and
+only a single space to separate the line numbers from the source.
@end table
@node Emacs
diff --git a/gdb/tui/tui-disasm.c b/gdb/tui/tui-disasm.c
index 8d5512e..9819cb9 100644
--- a/gdb/tui/tui-disasm.c
+++ b/gdb/tui/tui-disasm.c
@@ -245,7 +245,7 @@
+ asm_lines[i].insn);
const char *ptr = line.c_str ();
- src->line = tui_copy_source_line (&ptr, -1, offset, line_width);
+ src->line = tui_copy_source_line (&ptr, -1, offset, line_width, 0);
src->line_or_addr.loa = LOA_ADDRESS;
src->line_or_addr.u.addr = asm_lines[i].addr;
diff --git a/gdb/tui/tui-source.c b/gdb/tui/tui-source.c
index 915f9e3..32877d7 100644
--- a/gdb/tui/tui-source.c
+++ b/gdb/tui/tui-source.c
@@ -20,6 +20,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include <math.h>
#include <ctype.h>
#include "symtab.h"
#include "frame.h"
@@ -33,6 +34,7 @@
#include "tui/tui-data.h"
#include "tui/tui-io.h"
#include "tui/tui-stack.h"
+#include "tui/tui-win.h"
#include "tui/tui-winsource.h"
#include "tui/tui-source.h"
#include "gdb_curses.h"
@@ -59,8 +61,10 @@
nlines = (line_no + (height - 2)) - line_no;
std::string srclines;
+ const std::vector<off_t> *offsets;
if (!g_source_cache.get_source_lines (s, line_no, line_no + nlines,
- &srclines))
+ &srclines)
+ || !g_source_cache.get_line_charpos (s, &offsets))
ret = TUI_FAILURE;
else
{
@@ -78,6 +82,13 @@
start_line_or_addr.loa = LOA_LINE;
cur_line_no = start_line_or_addr.u.line_no = line_no;
+ int digits = 0;
+ if (compact_source)
+ {
+ double l = log10 (offsets->size ());
+ digits = 1 + (int) l;
+ }
+
const char *iter = srclines.c_str ();
content.resize (nlines);
while (cur_line < nlines)
@@ -89,7 +100,7 @@
if (*iter != '\0')
text = tui_copy_source_line (&iter, cur_line_no,
horizontal_offset,
- line_width);
+ line_width, digits);
/* Set whether element is the execution point
and whether there is a break point on it. */
diff --git a/gdb/tui/tui-win.c b/gdb/tui/tui-win.c
index c8d36c7..05eeb28 100644
--- a/gdb/tui/tui-win.c
+++ b/gdb/tui/tui-win.c
@@ -926,6 +926,29 @@
}
+/* See tui-win.h. */
+
+bool compact_source = false;
+
+/* Callback for "set tui compact-source". */
+
+static void
+tui_set_compact_source (const char *ignore, int from_tty,
+ struct cmd_list_element *c)
+{
+ if (TUI_SRC_WIN != nullptr)
+ TUI_SRC_WIN->refill ();
+}
+
+/* Callback for "show tui compact-source". */
+
+static void
+tui_show_compact_source (struct ui_file *file, int from_tty,
+ struct cmd_list_element *c, const char *value)
+{
+ printf_filtered (_("TUI source window compactness is %s.\n"), value);
+}
+
/* Set the tab width of the specified window. */
static void
tui_set_tab_width_command (const char *arg, int from_tty)
@@ -1483,4 +1506,14 @@
show_tui_resize_message,
&maintenance_set_cmdlist,
&maintenance_show_cmdlist);
+
+ add_setshow_boolean_cmd ("compact-source", class_tui,
+ &compact_source, _("\
+Set whether the TUI source window is compact."), _("\
+Show whether the TUI source window is compact."), _("\
+This variable controls whether the TUI source window is shown\n\
+in a compact form. The compact form puts the source closer to\n\
+the line numbers and uses less horizontal space."),
+ tui_set_compact_source, tui_show_compact_source,
+ &tui_setlist, &tui_showlist);
}
diff --git a/gdb/tui/tui-win.h b/gdb/tui/tui-win.h
index e97eb67..a9e0e84 100644
--- a/gdb/tui/tui-win.h
+++ b/gdb/tui/tui-win.h
@@ -57,4 +57,7 @@
/* Set a TUI variable. */
void tui_set_var_cmd (char *, int, struct cmd_list_element *);
+/* Whether compact source display should be used. */
+extern bool compact_source;
+
#endif /* TUI_TUI_WIN_H */
diff --git a/gdb/tui/tui-winsource.c b/gdb/tui/tui-winsource.c
index 3ca723c..81937c1 100644
--- a/gdb/tui/tui-winsource.c
+++ b/gdb/tui/tui-winsource.c
@@ -69,7 +69,7 @@
std::string
tui_copy_source_line (const char **ptr, int line_no, int first_col,
- int line_width)
+ int line_width, int ndigits)
{
const char *lineptr = *ptr;
@@ -78,10 +78,15 @@
if (line_no > 0)
{
- result = string_printf ("%-6d", line_no);
- int len = result.size ();
- len = len - ((len / tui_tab_width) * tui_tab_width);
- result.append (len, ' ');
+ if (ndigits > 0)
+ result = string_printf ("%*d ", ndigits, line_no);
+ else
+ {
+ result = string_printf ("%-6d", line_no);
+ int len = result.size ();
+ len = len - ((len / tui_tab_width) * tui_tab_width);
+ result.append (len, ' ');
+ }
}
int column = 0;
diff --git a/gdb/tui/tui-winsource.h b/gdb/tui/tui-winsource.h
index 7c3c626..8b96200 100644
--- a/gdb/tui/tui-winsource.h
+++ b/gdb/tui/tui-winsource.h
@@ -238,12 +238,16 @@
/* Extract some source text from PTR. LINE_NO is the line number. If
it is positive, it is printed at the start of the line. FIRST_COL
is the first column to extract, and LINE_WIDTH is the number of
- characters to display. Returns a string holding the desired text.
- PTR is updated to point to the start of the next line. */
+ characters to display. NDIGITS is used to format the line number
+ (if it is positive). If NDIGITS is greater than 0, then that many
+ digits are used; otherwise the line number is formatted with 6
+ digits and the text is aligned to the next tab stop. Returns a
+ string holding the desired text. PTR is updated to point to the
+ start of the next line. */
extern std::string tui_copy_source_line (const char **ptr,
int line_no, int first_col,
- int line_width);
+ int line_width, int ndigits);
/* Constant definitions. */
#define SCROLL_THRESHOLD 2 /* Threshold for lazy scroll. */
--
Gerrit-Project: binutils-gdb
Gerrit-Branch: master
Gerrit-Change-Id: I46ce9a68b12c9c79332d510f9c14b3c84b7efadd
Gerrit-Change-Number: 605
Gerrit-PatchSet: 2
Gerrit-Owner: Tom Tromey <tromey@sourceware.org>
Gerrit-Reviewer: Tom Tromey <tromey@sourceware.org>
Gerrit-CC: Andrew Burgess <andrew.burgess@embecosm.com>
Gerrit-MessageType: newpatchset
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