Hide the cursor on the help screen (#247)

git-svn-id: https://svn.musicpd.org/ncmpc/trunk@1854 09075e82-0dd4-0310-85a5-a0d7c8717e4f

3 files changed, 65 insertions, 13 deletions

diff --git a/src/list_window.c b/src/list_window.c
index 84c19a1c1..b541ac708 100644
--- a/src/list_window.c
+++ b/src/list_window.c
@@ -166,15 +166,22 @@ list_window_paint(list_window_t *lw,
   int i;
   int fill = options.wide_cursor;
 
-  while( lw->selected < lw->start )
+  if( lw->flags & LW_HIDE_CURSOR )
     {
-      lw->start--;
-      lw->clear=1;
+      lw->selected = -1;
     }
-  while( lw->selected >= lw->start+lw->rows )
+  else
     {
-      lw->start++;
-      lw->clear=1;
+      while( lw->selected < lw->start )
+	{
+	  lw->start--;
+	  lw->clear=1;
+	}
+      while( lw->selected >= lw->start+lw->rows )
+	{
+	  lw->start++;
+	  lw->clear=1;
+	}
     }
 
   for(i=0; i<lw->rows; i++)
diff --git a/src/list_window.h b/src/list_window.h
index 8f82791d1..8374e53d7 100644
--- a/src/list_window.h
+++ b/src/list_window.h
@@ -3,6 +3,8 @@
 
 #define LW_ROW(lw) (lw ? lw->selected-lw->start :  0)
 
+#define LW_HIDE_CURSOR    0x01
+
 typedef char *  (*list_window_callback_fn_t)   (int index, 
 						int *highlight,
 						void *data);
@@ -17,6 +19,7 @@ typedef struct
   int xoffset;
   int clear;
   int repaint;
+  int flags;
 
 } list_window_t;
 
diff --git a/src/screen_help.c b/src/screen_help.c
index 4d76ffe7f..4d1db1594 100644
--- a/src/screen_help.c
+++ b/src/screen_help.c
@@ -188,6 +188,7 @@ static void
 help_init(WINDOW *w, int cols, int rows)
 {
   lw = list_window_init(w, cols, rows);
+  lw->flags = LW_HIDE_CURSOR;
 }
 
 static void
@@ -233,15 +234,56 @@ help_update(screen_t *screen, mpdclient_t *c)
 static int 
 help_cmd(screen_t *screen, mpdclient_t *c, command_t cmd)
 {
-  int retval;
+  lw->repaint=1;
+  switch(cmd)
+    {
+    case CMD_LIST_NEXT:
+      if( lw->start+lw->rows < help_text_rows )
+	lw->start++;
+      return 1;
+    case CMD_LIST_PREVIOUS:
+      if( lw->start >0 )
+	lw->start--;
+      return 1;
+    case CMD_LIST_FIRST:
+      lw->start = 0;
+      return 1;
+    case CMD_LIST_LAST:
+      lw->start = help_text_rows-lw->rows;
+      if( lw->start<0 )
+	lw->start = 0;
+      return 1;
+    case CMD_LIST_NEXT_PAGE:
+      lw->start = lw->start + lw->rows;
+      if( lw->start+lw->rows >= help_text_rows )
+	lw->start = help_text_rows-lw->rows;
+      if( lw->start<0 )
+	lw->start = 0;
+       return 1;
+    case CMD_LIST_PREVIOUS_PAGE:
+      lw->start = lw->start - lw->rows;
+      if( lw->start<0 )
+	lw->start = 0;
+      return 1;
+    default:
+      break;
+    }
 
-  retval = list_window_cmd(lw, help_text_rows, cmd);
-  if( !retval )
-    return screen_find(screen, c, 
-		       lw,  help_text_rows,
-		       cmd, list_callback);
+  lw->selected = lw->start+lw->rows;
+  if( screen_find(screen, c, 
+		  lw,  help_text_rows,
+		  cmd, list_callback) )
+    {
+      /* center the row */
+      lw->start = lw->selected-(lw->rows/2);
+      if( lw->start+lw->rows > help_text_rows )
+	lw->start = help_text_rows-lw->rows;
+      if( lw->start<0 )
+	lw->start=0;
+      return 1;
+    }
 
-  return retval;
+  return 0;
 }
 
 static list_window_t *