From 2909e025db6878723b49644a8a0cf160d07e6444 Mon Sep 17 00:00:00 2001

From: Laszlo Ersek <lersek@redhat.com>

Date: Tue, 25 Feb 2014 22:40:01 +0100

Subject: MdeModulePkg: TerminalDxe: set xterm resolution on mode change (RH

 only)

The

  CSI Ps ; Ps ; Ps t

escape sequence serves for window manipulation. We can use the

  CSI 8 ; <rows> ; <columns> t

sequence to adapt eg. the xterm window size to the selected console mode.

Notes about the 20160608b-988715a -> 20170228-c325e41585e3 rebase:

- refresh commit 519b9751573e against various context changes

Reference: <http://rtfm.etla.org/xterm/ctlseq.html>

Contributed-under: TianoCore Contribution Agreement 1.0

Signed-off-by: Laszlo Ersek <lersek@redhat.com>

---

 MdeModulePkg/MdeModulePkg.dec                      |  4 +++

 .../Universal/Console/TerminalDxe/TerminalConOut.c | 30 ++++++++++++++++++++++

 .../Universal/Console/TerminalDxe/TerminalDxe.inf  |  2 ++

 3 files changed, 36 insertions(+)

diff --git a/MdeModulePkg/MdeModulePkg.dec b/MdeModulePkg/MdeModulePkg.dec

index 426634f..b4a7c3a 100644

--- a/MdeModulePkg/MdeModulePkg.dec

+++ b/MdeModulePkg/MdeModulePkg.dec

@@ -1702,6 +1702,10 @@

   # @Prompt A list of system FMP ImageTypeId GUIDs

   gEfiMdeModulePkgTokenSpaceGuid.PcdSystemFmpCapsuleImageTypeIdGuid|{0x0}|VOID*|0x30001046

+  ## Controls whether TerminalDxe outputs an XTerm resize sequence on terminal

+  #  mode change.

+  gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm|FALSE|BOOLEAN|0x00010080

+

 [PcdsPatchableInModule]

   ## Specify memory size with page number for PEI code when

   #  Loading Module at Fixed Address feature is enabled.

diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c

index e677a76..e2bdc31 100644

--- a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c

+++ b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalConOut.c

@@ -13,6 +13,8 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

 **/

+#include <Library/PrintLib.h>

+

 #include "Terminal.h"

 //

@@ -87,6 +89,16 @@ CHAR16 mCursorForwardString[]      = { ESC, '[', '0', '0', 'C', 0 };

 CHAR16 mCursorBackwardString[]     = { ESC, '[', '0', '0', 'D', 0 };

 //

+// Note that this is an ASCII format string, taking two INT32 arguments:

+// rows, columns.

+//

+// A %d (INT32) format specification can expand to at most 11 characters.

+//

+CHAR8 mResizeTextAreaFormatString[] = "\x1B[8;%d;%dt";

+#define RESIZE_SEQ_SIZE (sizeof mResizeTextAreaFormatString + 2 * (11 - 2))

+

+

+//

 // Body of the ConOut functions

 //

@@ -508,6 +520,24 @@ TerminalConOutSetMode (

     return EFI_DEVICE_ERROR;

   }

+  if (PcdGetBool (PcdResizeXterm)) {

+    CHAR16 ResizeSequence[RESIZE_SEQ_SIZE];

+

+    UnicodeSPrintAsciiFormat (

+      ResizeSequence,

+      sizeof ResizeSequence,

+      mResizeTextAreaFormatString,

+      (INT32) TerminalDevice->TerminalConsoleModeData[ModeNumber].Rows,

+      (INT32) TerminalDevice->TerminalConsoleModeData[ModeNumber].Columns

+      );

+    TerminalDevice->OutputEscChar = TRUE;

+    Status                        = This->OutputString (This, ResizeSequence);

+    TerminalDevice->OutputEscChar = FALSE;

+    if (EFI_ERROR (Status)) {

+      return EFI_DEVICE_ERROR;

+    }

+  }

+

   This->Mode->Mode  = (INT32) ModeNumber;

   Status            = This->ClearScreen (This);

diff --git a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf

index 0780296..bd2ba82 100644

--- a/MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf

+++ b/MdeModulePkg/Universal/Console/TerminalDxe/TerminalDxe.inf

@@ -60,6 +60,7 @@

   DebugLib

   PcdLib

   BaseLib

+  PrintLib

 [Guids]

   ## SOMETIMES_PRODUCES ## Variable:L"ConInDev"

@@ -88,6 +89,7 @@

 [Pcd]

   gEfiMdePkgTokenSpaceGuid.PcdDefaultTerminalType           ## SOMETIMES_CONSUMES

   gEfiMdeModulePkgTokenSpaceGuid.PcdErrorCodeSetVariable    ## CONSUMES

+  gEfiMdeModulePkgTokenSpaceGuid.PcdResizeXterm             ## CONSUMES

 # [Event]

 # # Relative timer event set by UnicodeToEfiKey(), used to be one 2 seconds input timeout.

-- 

1.8.3.1