simpletextout.h

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/*++

Copyright (c) 2004, Intel Corporation                                                         
All rights reserved. This program and the accompanying materials                          
are licensed and made available under the terms and conditions of the BSD License         
which accompanies this distribution.  The full text of the license may be found at        
http://opensource.org/licenses/bsd-license.php                                            
                                                                                          
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,                     
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.             

Module Name:

  SimpleTextOut.h

Abstract:

  Simple Text Out protocol from the EFI 1.0 specification.

  Abstraction of a very simple text based output device like VGA text mode or
  a serial terminal. The Simple Text Out protocol instance can represent
  a single hardware device or a virtual device that is an agregation
  of multiple physical devices.

--*/

#ifndef _SIMPLE_TEXT_OUT_H_
#define _SIMPLE_TEXT_OUT_H_

#define EFI_SIMPLE_TEXT_OUT_PROTOCOL_GUID \
  { \
    0x387477c2, 0x69c7, 0x11d2, 0x8e, 0x39, 0x0, 0xa0, 0xc9, 0x69, 0x72, 0x3b \
  }

EFI_FORWARD_DECLARATION (EFI_SIMPLE_TEXT_OUT_PROTOCOL);

//
// Define's for required EFI Unicode Box Draw characters
//
#define BOXDRAW_HORIZONTAL                  0x2500
#define BOXDRAW_VERTICAL                    0x2502
#define BOXDRAW_DOWN_RIGHT                  0x250c
#define BOXDRAW_DOWN_LEFT                   0x2510
#define BOXDRAW_UP_RIGHT                    0x2514
#define BOXDRAW_UP_LEFT                     0x2518
#define BOXDRAW_VERTICAL_RIGHT              0x251c
#define BOXDRAW_VERTICAL_LEFT               0x2524
#define BOXDRAW_DOWN_HORIZONTAL             0x252c
#define BOXDRAW_UP_HORIZONTAL               0x2534
#define BOXDRAW_VERTICAL_HORIZONTAL         0x253c
#define BOXDRAW_DOUBLE_HORIZONTAL           0x2550
#define BOXDRAW_DOUBLE_VERTICAL             0x2551
#define BOXDRAW_DOWN_RIGHT_DOUBLE           0x2552
#define BOXDRAW_DOWN_DOUBLE_RIGHT           0x2553
#define BOXDRAW_DOUBLE_DOWN_RIGHT           0x2554
#define BOXDRAW_DOWN_LEFT_DOUBLE            0x2555
#define BOXDRAW_DOWN_DOUBLE_LEFT            0x2556
#define BOXDRAW_DOUBLE_DOWN_LEFT            0x2557
#define BOXDRAW_UP_RIGHT_DOUBLE             0x2558
#define BOXDRAW_UP_DOUBLE_RIGHT             0x2559
#define BOXDRAW_DOUBLE_UP_RIGHT             0x255a
#define BOXDRAW_UP_LEFT_DOUBLE              0x255b
#define BOXDRAW_UP_DOUBLE_LEFT              0x255c
#define BOXDRAW_DOUBLE_UP_LEFT              0x255d
#define BOXDRAW_VERTICAL_RIGHT_DOUBLE       0x255e
#define BOXDRAW_VERTICAL_DOUBLE_RIGHT       0x255f
#define BOXDRAW_DOUBLE_VERTICAL_RIGHT       0x2560
#define BOXDRAW_VERTICAL_LEFT_DOUBLE        0x2561
#define BOXDRAW_VERTICAL_DOUBLE_LEFT        0x2562
#define BOXDRAW_DOUBLE_VERTICAL_LEFT        0x2563
#define BOXDRAW_DOWN_HORIZONTAL_DOUBLE      0x2564
#define BOXDRAW_DOWN_DOUBLE_HORIZONTAL      0x2565
#define BOXDRAW_DOUBLE_DOWN_HORIZONTAL      0x2566
#define BOXDRAW_UP_HORIZONTAL_DOUBLE        0x2567
#define BOXDRAW_UP_DOUBLE_HORIZONTAL        0x2568
#define BOXDRAW_DOUBLE_UP_HORIZONTAL        0x2569
#define BOXDRAW_VERTICAL_HORIZONTAL_DOUBLE  0x256a
#define BOXDRAW_VERTICAL_DOUBLE_HORIZONTAL  0x256b
#define BOXDRAW_DOUBLE_VERTICAL_HORIZONTAL  0x256c

//
// EFI Required Block Elements Code Chart
//
#define BLOCKELEMENT_FULL_BLOCK   0x2588
#define BLOCKELEMENT_LIGHT_SHADE  0x2591

//
// EFI Required Geometric Shapes Code Chart
//
#define GEOMETRICSHAPE_UP_TRIANGLE    0x25b2
#define GEOMETRICSHAPE_RIGHT_TRIANGLE 0x25ba
#define GEOMETRICSHAPE_DOWN_TRIANGLE  0x25bc
#define GEOMETRICSHAPE_LEFT_TRIANGLE  0x25c4

//
// EFI Required Arrow shapes
//
#define ARROW_LEFT  0x2190
#define ARROW_UP    0x2191
#define ARROW_RIGHT 0x2192
#define ARROW_DOWN  0x2193

//
// EFI Console Colours
//
#define EFI_BLACK                 0x00
#define EFI_BLUE                  0x01
#define EFI_GREEN                 0x02
#define EFI_CYAN                  (EFI_BLUE | EFI_GREEN)
#define EFI_RED                   0x04
#define EFI_MAGENTA               (EFI_BLUE | EFI_RED)
#define EFI_BROWN                 (EFI_GREEN | EFI_RED)
#define EFI_LIGHTGRAY             (EFI_BLUE | EFI_GREEN | EFI_RED)
#define EFI_BRIGHT                0x08
#define EFI_DARKGRAY              (EFI_BRIGHT)
#define EFI_LIGHTBLUE             (EFI_BLUE | EFI_BRIGHT)
#define EFI_LIGHTGREEN            (EFI_GREEN | EFI_BRIGHT)
#define EFI_LIGHTCYAN             (EFI_CYAN | EFI_BRIGHT)
#define EFI_LIGHTRED              (EFI_RED | EFI_BRIGHT)
#define EFI_LIGHTMAGENTA          (EFI_MAGENTA | EFI_BRIGHT)
#define EFI_YELLOW                (EFI_BROWN | EFI_BRIGHT)
#define EFI_WHITE                 (EFI_BLUE | EFI_GREEN | EFI_RED | EFI_BRIGHT)

#define EFI_TEXT_ATTR(f, b)       ((f) | ((b) << 4))

#define EFI_BACKGROUND_BLACK      0x00
#define EFI_BACKGROUND_BLUE       0x10
#define EFI_BACKGROUND_GREEN      0x20
#define EFI_BACKGROUND_CYAN       (EFI_BACKGROUND_BLUE | EFI_BACKGROUND_GREEN)
#define EFI_BACKGROUND_RED        0x40
#define EFI_BACKGROUND_MAGENTA    (EFI_BACKGROUND_BLUE | EFI_BACKGROUND_RED)
#define EFI_BACKGROUND_BROWN      (EFI_BACKGROUND_GREEN | EFI_BACKGROUND_RED)
#define EFI_BACKGROUND_LIGHTGRAY  (EFI_BACKGROUND_BLUE | EFI_BACKGROUND_GREEN | EFI_BACKGROUND_RED)

//
// We currently define attributes from 0 - 7F for color manipulations
// To internally handle the local display characteristics for a particular character, we are defining
// Bit 7 to signify the local glyph representation for a character.  If turned on, glyphs will be
// pulled from the wide glyph database and will display locally as a wide character (16 X 19 versus 8 X 19)
// If bit 7 is off, the narrow glyph database will be used.  This does NOT affect information that is sent to
// non-local displays (e.g. serial or LAN consoles).
//
#define EFI_WIDE_ATTRIBUTE  0x80

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_RESET) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN BOOLEAN                                ExtendedVerification
  )
/*++

  Routine Description:
    Reset the text output device hardware and optionaly run diagnostics

  Arguments:
    This                 - Protocol instance pointer.
    ExtendedVerification - Driver may perform more exhaustive verfication 
                           operation of the device during reset.

  Returns:
    EFI_SUCCESS       - The text output device was reset.
    EFI_DEVICE_ERROR  - The text output device is not functioning correctly and
                        could not be reset.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_OUTPUT_STRING) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN CHAR16                                 *String
  )
/*++

  Routine Description:
    Write a Unicode string to the output device.

  Arguments:
    This    - Protocol instance pointer.
    String  - The NULL-terminated Unicode string to be displayed on the output
              device(s). All output devices must also support the Unicode 
              drawing defined in this file.

  Returns:
    EFI_SUCCESS       - The string was output to the device.
    EFI_DEVICE_ERROR  - The device reported an error while attempting to output
                         the text.
    EFI_UNSUPPORTED        - The output device's mode is not currently in a 
                              defined text mode.
    EFI_WARN_UNKNOWN_GLYPH - This warning code indicates that some of the 
                              characters in the Unicode string could not be 
                              rendered and were skipped.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_TEST_STRING) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN CHAR16                                 *String
  )
/*++

  Routine Description:
    Verifies that all characters in a Unicode string can be output to the 
    target device.

  Arguments:
    This    - Protocol instance pointer.
    String  - The NULL-terminated Unicode string to be examined for the output
               device(s).

  Returns:
    EFI_SUCCESS     - The device(s) are capable of rendering the output string.
    EFI_UNSUPPORTED - Some of the characters in the Unicode string cannot be 
                       rendered by one or more of the output devices mapped 
                       by the EFI handle.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_QUERY_MODE) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN UINTN                                  ModeNumber,
  OUT UINTN                                 *Columns,
  OUT UINTN                                 *Rows
  )
/*++

  Routine Description:
    Returns information for an available text mode that the output device(s)
    supports.

  Arguments:
    This       - Protocol instance pointer.
    ModeNumber - The mode number to return information on.
    Columns, Rows - Returns the geometry of the text output device for the
                    requested ModeNumber.

  Returns:
    EFI_SUCCESS      - The requested mode information was returned.
    EFI_DEVICE_ERROR - The device had an error and could not complete the request.
    EFI_UNSUPPORTED - The mode number was not valid.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_SET_MODE) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN UINTN                                  ModeNumber
  )
/*++

  Routine Description:
    Sets the output device(s) to a specified mode.

  Arguments:
    This       - Protocol instance pointer.
    ModeNumber - The mode number to set.

  Returns:
    EFI_SUCCESS      - The requested text mode was set.
    EFI_DEVICE_ERROR - The device had an error and could not complete the request.
    EFI_UNSUPPORTED - The mode number was not valid.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_SET_ATTRIBUTE) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN UINTN                                  Attribute
  )
/*++

  Routine Description:
    Sets the background and foreground colors for the OutputString () and
    ClearScreen () functions.

  Arguments:
    This      - Protocol instance pointer.
    Attribute - The attribute to set. Bits 0..3 are the foreground color, and
                bits 4..6 are the background color. All other bits are undefined
                and must be zero. The valid Attributes are defined in this file.

  Returns:
    EFI_SUCCESS      - The attribute was set.
    EFI_DEVICE_ERROR - The device had an error and could not complete the request.
    EFI_UNSUPPORTED - The attribute requested is not defined.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_CLEAR_SCREEN) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL   * This
  )
/*++

  Routine Description:
    Clears the output device(s) display to the currently selected background 
    color.

  Arguments:
    This      - Protocol instance pointer.

  Returns:
    EFI_SUCCESS      - The operation completed successfully.
    EFI_DEVICE_ERROR - The device had an error and could not complete the request.
    EFI_UNSUPPORTED - The output device is not in a valid text mode.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_SET_CURSOR_POSITION) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN UINTN                                  Column,
  IN UINTN                                  Row
  )
/*++

  Routine Description:
    Sets the current coordinates of the cursor position

  Arguments:
    This        - Protocol instance pointer.
    Column, Row - the position to set the cursor to. Must be greater than or
                  equal to zero and less than the number of columns and rows
                  by QueryMode ().

  Returns:
    EFI_SUCCESS      - The operation completed successfully.
    EFI_DEVICE_ERROR - The device had an error and could not complete the request.
    EFI_UNSUPPORTED - The output device is not in a valid text mode, or the 
                       cursor position is invalid for the current mode.

--*/
;

typedef
EFI_STATUS
(EFIAPI *EFI_TEXT_ENABLE_CURSOR) (
  IN EFI_SIMPLE_TEXT_OUT_PROTOCOL           * This,
  IN BOOLEAN                                Enable
  )
/*++

  Routine Description:
    Makes the cursor visible or invisible

  Arguments:
    This    - Protocol instance pointer.
    Visible - If TRUE, the cursor is set to be visible. If FALSE, the cursor is
              set to be invisible.

  Returns:
    EFI_SUCCESS      - The operation completed successfully.
    EFI_DEVICE_ERROR - The device had an error and could not complete the 
                        request, or the device does not support changing
                        the cursor mode.
    EFI_UNSUPPORTED - The output device is not in a valid text mode.

--*/
;

/*++
  Mode Structure pointed to by Simple Text Out protocol.

  MaxMode   - The number of modes supported by QueryMode () and SetMode ().
  Mode      - The text mode of the output device(s).
  Attribute - The current character output attribute
  CursorColumn  - The cursor's column.
  CursorRow     - The cursor's row.
  CursorVisible - The cursor is currently visbile or not.
  
--*/
typedef struct {
  INT32   MaxMode;

  //
  // current settings
  //
  INT32   Mode;
  INT32   Attribute;
  INT32   CursorColumn;
  INT32   CursorRow;
  BOOLEAN CursorVisible;
} EFI_SIMPLE_TEXT_OUTPUT_MODE;

typedef struct _EFI_SIMPLE_TEXT_OUT_PROTOCOL {
  EFI_TEXT_RESET                Reset;

  EFI_TEXT_OUTPUT_STRING        OutputString;
  EFI_TEXT_TEST_STRING          TestString;

  EFI_TEXT_QUERY_MODE           QueryMode;
  EFI_TEXT_SET_MODE             SetMode;
  EFI_TEXT_SET_ATTRIBUTE        SetAttribute;

  EFI_TEXT_CLEAR_SCREEN         ClearScreen;
  EFI_TEXT_SET_CURSOR_POSITION  SetCursorPosition;
  EFI_TEXT_ENABLE_CURSOR        EnableCursor;

  //
  // Current mode
  //
  EFI_SIMPLE_TEXT_OUTPUT_MODE   *Mode;
} EFI_SIMPLE_TEXT_OUT_PROTOCOL;

extern EFI_GUID gEfiSimpleTextOutProtocolGuid;

#endif