From a9b848c54810fd88e9423000a2249e47e0f6198b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Morel=20B=C3=A9renger?= <berenger.morel@neutralite.org>
Date: Tue, 24 May 2016 16:08:50 +0200
Subject: [PATCH] Reverse video mode for currently executing line

Use ":set rev true" or ":set reverse_exec_line true" to enable.
Disabled by default.
TODO: respect syntax colors of the line
---
 cgdb/cgdbrc.c  | 7 ++++++-
 cgdb/cgdbrc.h  | 2 ++
 cgdb/sources.c | 8 ++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/cgdb/cgdbrc.c b/cgdb/cgdbrc.c
index cc305fe..26d1d30 100644
--- a/cgdb/cgdbrc.c
+++ b/cgdb/cgdbrc.c
@@ -65,6 +65,7 @@ static struct cgdbrc_config_option cgdbrc_config_options[CGDBRC_WRAPSCAN + 1] =
     {CGDBRC_AUTOSOURCERELOAD, {1}},
     {CGDBRC_CGDB_MODE_KEY, {CGDB_KEY_ESC}},
     {CGDBRC_IGNORECASE, {0}},
+    {CGDBRC_REVERSE_EXEC_LINE, {0}},
     {CGDBRC_SHOWTGDBCOMMANDS, {0}},
     {CGDBRC_SYNTAX, {TOKENIZER_LANGUAGE_UNKNOWN}},
     {CGDBRC_TABSTOP, {8}},
@@ -108,6 +109,10 @@ static struct ConfigVariable {
     {
     "ignorecase", "ic", CONFIG_TYPE_BOOL,
                 &cgdbrc_config_options[CGDBRC_IGNORECASE].variant.int_val},
+            /* reverse_exec_line */
+    {
+    "reverse_exec_line", "rev", CONFIG_TYPE_BOOL,
+                &cgdbrc_config_options[CGDBRC_REVERSE_EXEC_LINE].variant.int_val},
             /* showtgdbcommands */
     {
     "showtgdbcommands", "stc", CONFIG_TYPE_FUNC_BOOL, &command_set_stc},
@@ -138,7 +143,7 @@ static struct ConfigVariable {
     "winsplit", "winsplit", CONFIG_TYPE_FUNC_STRING, command_set_winsplit},
             /* wrapscan */
     {
-"wrapscan", "ws", CONFIG_TYPE_BOOL,
+    "wrapscan", "ws", CONFIG_TYPE_BOOL,
                 &cgdbrc_config_options[CGDBRC_WRAPSCAN].variant.int_val},};
 
 static int command_do_tgdbcommand(int param);
diff --git a/cgdb/cgdbrc.h b/cgdb/cgdbrc.h
index bac90bb..dd4e008 100644
--- a/cgdb/cgdbrc.h
+++ b/cgdb/cgdbrc.h
@@ -105,6 +105,7 @@ enum cgdbrc_option_kind {
     CGDBRC_AUTOSOURCERELOAD,
     CGDBRC_CGDB_MODE_KEY,
     CGDBRC_IGNORECASE,
+    CGDBRC_REVERSE_EXEC_LINE,
     CGDBRC_SHOWTGDBCOMMANDS,
     CGDBRC_SYNTAX,
     CGDBRC_TABSTOP,
@@ -126,6 +127,7 @@ struct cgdbrc_config_option {
         /* option_kind == CGDBRC_AUTOSOURCERELOAD */
         /* option_kind == CGDBRC_CGDB_MODE_KEY */
         /* option_kind == CGDBRC_IGNORECASE */
+        /* option_kind == CGDBRC_REVERSE_EXEC_LINE */
         /* option_kind == CGDBRC_SHOWTGDBCOMMANDS */
         /* option_kind == CGDBRC_TABSTOP */
         /* option_kind == CGDBRC_TIMEOUT */
diff --git a/cgdb/sources.c b/cgdb/sources.c
index 271c422..3a0f5cc 100644
--- a/cgdb/sources.c
+++ b/cgdb/sources.c
@@ -592,6 +592,7 @@ int source_display(struct sviewer *sview, int focus)
         else if (line < 0)
             line = 0;
     }
+    int run_line = 0;
 
     /* Print 'height' lines of the file, starting at 'line' */
     lwidth = (int) log10(sview->cur->buf.length) + 1;
@@ -617,6 +618,7 @@ int source_display(struct sviewer *sview, int focus)
 
                 /* Mark the current line with an arrow */
             } else if (line == sview->cur->exe_line) {
+                run_line = i;
                 switch (sview->cur->buf.breakpts[line]) {
                     case 0:
                         if (hl_groups_get_attr(hl_groups_instance, HLG_ARROW,
@@ -733,6 +735,12 @@ int source_display(struct sviewer *sview, int focus)
         }
     }
 
+    bool config_reverse_exec_line = cgdbrc_get(CGDBRC_REVERSE_EXEC_LINE)->variant.int_val;
+    if (config_reverse_exec_line) {
+    mvwchgat(sview->win, run_line, lwidth + 2, getmaxx(sview->win) - lwidth - 2,
+            A_REVERSE, 0, NULL);
+    }
+
     wmove(sview->win, height - (line - sview->cur->sel_line), lwidth + 2);
     wrefresh(sview->win);
 
-- 
2.1.4