Add the ability to toggle off graphics mode with ctrl-T

When debugging it's useful to be able to force text mode so
text messages become visible on screen.  ctrl-t and ctrl-v
combined make it a lot easier to see what's going on.

1 files changed, 12 insertions, 1 deletions

diff --git a/src/ply-window.c b/src/ply-window.c
index 222cd80..b1f5944 100644
--- a/src/ply-window.c
+++ b/src/ply-window.c
@@ -43,6 +43,7 @@
 #include "ply-logger.h"
 #include "ply-utils.h"
 
+#define KEY_CTRL_T '\024'
 #define KEY_CTRL_V '\026'
 #define KEY_ESCAPE '\033'
 #define KEY_RETURN '\r'
@@ -60,6 +61,8 @@ struct _ply_window
   ply_fd_watch_t *tty_fd_watch;
   ply_window_mode_t mode;
 
+  uint32_t should_force_text_mode : 1;
+
   ply_window_keyboard_input_handler_t keyboard_input_handler;
   void *keyboard_input_handler_user_data;
 
@@ -107,6 +110,13 @@ process_keyboard_input (ply_window_t *window,
             ply_trace ("verbose mode toggled!");
           return;
 
+          case KEY_CTRL_T:
+            ply_trace ("toggle text mode!");
+            window->should_force_text_mode = !window->should_force_text_mode;
+            ply_window_set_mode (window, window->mode);
+            ply_trace ("text mode toggled!");
+          return;
+
           case KEY_ESCAPE:
             ply_trace ("escape key!");
             if (window->escape_handler != NULL)
@@ -274,7 +284,8 @@ ply_window_set_mode (ply_window_t      *window,
         break;
 
       case PLY_WINDOW_MODE_GRAPHICS:
-        if (ioctl (window->tty_fd, KDSETMODE, KD_GRAPHICS) < 0)
+        if (ioctl (window->tty_fd, KDSETMODE,
+                   window->should_force_text_mode? KD_TEXT : KD_GRAPHICS) < 0)
           return false;
         break;
     }