sled

чување eef7414de7638b48508da88a475ea36fe4a2cc4a
родитељ 6ba12cea7033497093a266924393ea10f124124a
Аутор: Страхиња Радић <contact@strahinja.org>
Датум:   Tue, 21 Jun 2022 15:53:17 +0200

Add suspend (C-Z) support

Signed-off-by: Страхиња Радић <contact@strahinja.org>

Diffstat:
M
TODO
 | 
2
+-
M
config.def.h
 | 
5
++++-
M
config.h
 | 
5
++++-
M
sled.1.in
 | 
1
+
M
sled.c
 | 
28
++++++++++++++++++++++++++++

измењених датотека: 5, додавања: 38(+), брисања: 3(-)
diff --git a/TODO b/TODO
@@ -1,7 +1,7 @@
 				      TODO
 				      ====
 
-	[ ] Allow C-Z to suspend
+	[x] Allow C-Z to suspend
 
 	[ ] Replace (patch)
 
diff --git a/config.def.h b/config.def.h
@@ -97,6 +97,7 @@ int toggle_overwrite(struct DrawState* state);
 int toggle_selection(struct DrawState* state);
 int write_file(struct DrawState* state);
 int yank_to_paste(struct DrawState* state);
+int suspend_program(struct DrawState* state);
 
 /* clang-format off */
 
@@ -104,7 +105,9 @@ int yank_to_paste(struct DrawState* state);
 static const struct Key top_level_keys[] = {
 	{ .ev = { .key = TB_KEY_ESC },  .callback = cancel_close },
 	{ .ev = { .key = TB_KEY_CTRL_Q },
-					.callback = exit_program }
+					.callback = exit_program },
+	{ .ev = { .key = TB_KEY_CTRL_Z },
+					.callback = suspend_program }
 };
 
 /* Only when no dialog/prompt open */
diff --git a/config.h b/config.h
@@ -97,6 +97,7 @@ int toggle_overwrite(struct DrawState* state);
 int toggle_selection(struct DrawState* state);
 int write_file(struct DrawState* state);
 int yank_to_paste(struct DrawState* state);
+int suspend_program(struct DrawState* state);
 
 /* clang-format off */
 
@@ -104,7 +105,9 @@ int yank_to_paste(struct DrawState* state);
 static const struct Key top_level_keys[] = {
 	{ .ev = { .key = TB_KEY_ESC },  .callback = cancel_close },
 	{ .ev = { .key = TB_KEY_CTRL_Q },
-					.callback = exit_program }
+					.callback = exit_program },
+	{ .ev = { .key = TB_KEY_CTRL_Z },
+					.callback = suspend_program }
 };
 
 /* Only when no dialog/prompt open */
diff --git a/sled.1.in b/sled.1.in
@@ -116,6 +116,7 @@ _
 \fCC-V\fP@Paste from paste buffer
 \fCC-X\fP@Cut to paste buffer
 \fCC-Y\fP@Erase the entire current line
+\fCC-Z\fP@Suspend
 \fCC-W\fP@Erase previous word
 .TE
 .
diff --git a/sled.c b/sled.c
@@ -6,11 +6,13 @@
 
 #include <errno.h>
 #include <fcntl.h>
+#include <signal.h>
 #include <stdarg.h>
 #include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #define TB_OPT_V1_COMPAT
 #define TB_IMPL
@@ -1886,6 +1888,32 @@ simple_yank(struct DrawState* state)
 }
 
 int
+suspend_program(struct DrawState* state)
+{
+	tb_set_clear_attrs(TB_WHITE, TB_DEFAULT);
+	tb_clear();
+	tb_set_cursor(0, 0);
+	tb_present();
+
+	kill(getpid(), SIGTSTP); 
+
+	/* --- back from suspend --- */
+
+	/* tb_clear() won't cut it unfortunately */
+	for (int y = 0; y < state->maxy; y++)
+		for (int x = 0; x < state->maxx; x++)
+			tb_set_cell(x, y, '.', TB_WHITE, TB_DEFAULT);
+	tb_present();
+	for (int y = 0; y < state->maxy; y++)
+		for (int x = 0; x < state->maxx; x++)
+			tb_set_cell(x, y, ' ', TB_WHITE, TB_DEFAULT);
+
+	draw(state);
+	tb_present();
+	return 0;
+}
+
+int
 toggle_overwrite(struct DrawState* state)
 {
 	TOGGLE(state->mode, M_OVERWRITE);