[PATCH] FIXME: These should be dynamically obtained from a terminal.

[Vincent Pelletier]

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Here is a patch that adds grub_getwh functions.
Warning : terms other than console.c & vga.c will be broken by this
patch, as long as they don't have the function.

2005-07-12  Vincent Pelletier  <address@hidden>

        * include/grub/term.h: (GRUB_TERM_WIDTH, GRUB_TERM_HEIGHT):
        Redefined to use grub_getwh.
        (struct grub_term): New field named getwh.
        (grub_getwh): New exported prototype.
        * term/i386/pc/console.c: (grub_console_getwh): New function.
        (grub_console_term): New field and new initial value.
        * term/i386/pc/vga.c: (grub_vga_getwh): New function.
        (grub_vga_term): New field and new initial value.

Vincent Pelletier
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Index: include/grub/term.h
===================================================================
RCS file: /cvsroot/grub/grub2/include/grub/term.h,v
retrieving revision 1.7
diff -u -p -r1.7 term.h
--- include/grub/term.h 19 Feb 2005 20:56:07 -0000      1.7
+++ include/grub/term.h 12 Jul 2005 19:55:33 -0000
@@ -71,9 +71,9 @@ grub_term_color_state;
 
 /* Menu-related geometrical constants.  */
 
-/* FIXME: These should be dynamically obtained from a terminal.  */
-#define GRUB_TERM_WIDTH                80
-#define GRUB_TERM_HEIGHT       25
+/* FIXME: Ugly way to get them form terminal.  */
+#define GRUB_TERM_WIDTH         ((grub_getwh()&0xFF00)>>8)
+#define GRUB_TERM_HEIGHT        (grub_getwh()&0xFF)
 
 /* The number of lines of "GRUB version..." at the top.  */
 #define GRUB_TERM_INFO_HEIGHT  1
@@ -142,6 +142,9 @@ struct grub_term
   /* Get a character.  */
   int (*getkey) (void);
   
+  /* Get the screen size. The return value is ((Width << 8) | Height).  */
+  grub_uint16_t (*getwh) (void);
+
   /* Get the cursor position. The return value is ((X << 8) | Y).  */
   grub_uint16_t (*getxy) (void);
   
@@ -183,6 +186,7 @@ void EXPORT_FUNC(grub_putchar) (int c);
 void EXPORT_FUNC(grub_putcode) (grub_uint32_t code);
 int EXPORT_FUNC(grub_getkey) (void);
 int EXPORT_FUNC(grub_checkkey) (void);
+grub_uint16_t EXPORT_FUNC(grub_getwh) (void);
 grub_uint16_t EXPORT_FUNC(grub_getxy) (void);
 void EXPORT_FUNC(grub_gotoxy) (grub_uint8_t x, grub_uint8_t y);
 void EXPORT_FUNC(grub_cls) (void);
Index: term/i386/pc/console.c
===================================================================
RCS file: /cvsroot/grub/grub2/term/i386/pc/console.c,v
retrieving revision 1.5
diff -u -p -r1.5 console.c
--- term/i386/pc/console.c      15 Feb 2005 00:07:01 -0000      1.5
+++ term/i386/pc/console.c      12 Jul 2005 19:55:33 -0000
@@ -74,6 +74,12 @@ grub_console_putchar (grub_uint32_t c)
   grub_console_real_putchar (c);
 }
 
+static grub_uint16_t
+grub_console_getwh (void)
+{
+  return (80 << 8) | 25; /* FIXME: Always true ?  */
+}
+
 static void
 grub_console_setcolorstate (grub_term_color_state state)
 {
@@ -107,6 +113,7 @@ static struct grub_term grub_console_ter
     .putchar = grub_console_putchar,
     .checkkey = grub_console_checkkey,
     .getkey = grub_console_getkey,
+    .getwh = grub_console_getwh,
     .getxy = grub_console_getxy,
     .gotoxy = grub_console_gotoxy,
     .cls = grub_console_cls,
Index: term/i386/pc/vga.c
===================================================================
RCS file: /cvsroot/grub/grub2/term/i386/pc/vga.c,v
retrieving revision 1.7
diff -u -p -r1.7 vga.c
--- term/i386/pc/vga.c  2 Mar 2005 20:12:46 -0000       1.7
+++ term/i386/pc/vga.c  12 Jul 2005 19:55:34 -0000
@@ -473,6 +473,12 @@ grub_vga_putchar (grub_uint32_t c)
 }
 
 static grub_uint16_t
+grub_vga_getwh (void)
+{
+  return (TEXT_WIDTH << 8) | TEXT_HEIGHT;
+}
+
+static grub_uint16_t
 grub_vga_getxy (void)
 {
   return ((xpos << 8) | ypos);
@@ -566,6 +572,7 @@ static struct grub_term grub_vga_term =
     .putchar = grub_vga_putchar,
     .checkkey = grub_console_checkkey,
     .getkey = grub_console_getkey,
+    .getwh = grub_vga_getwh,
     .getxy = grub_vga_getxy,
     .gotoxy = grub_vga_gotoxy,
     .cls = grub_vga_cls,