; =======================================================================
; FILE: DebVect.ASM
;
; COPYRIGHT (c) 1988, 1989 BY BORLAND INTERNATIONAL, Inc.
;
; PURPOSE: Device Driver Overlay (DDO) for the DEBUG.BGI driver
; This file defines the vector table at the beginning of the
; driver. The segment definitions allow this module to be
; linked with a Turbo C module.
;
; Current Date: 09/15/88
;
; Updates: None.
;
; =======================================================================
INCLUDE DEVICE.INC ; File defines vector table format
_TEXT SEGMENT PARA PUBLIC 'CODE'
_TEXT ENDS
_DATA segment word public 'DATA'
_DATA ENDS
_BSS segment word public 'BSS'
_BSS ENDS
_TEXT SEGMENT PARA PUBLIC 'CODE'
DGROUP group _DATA, _TEXT, _BSS
ASSUME DS:DGROUP, CS:DGROUP
; The following table defines all of the available vectors as
; residing in the Turbo C module.
EXTRN _install : NEAR, _init : NEAR
EXTRN _clear : NEAR, _post : NEAR
EXTRN _move : NEAR, _draw : NEAR
EXTRN _vect : NEAR, _bar : NEAR
EXTRN _patbar : NEAR, _arc : NEAR
EXTRN _pieslice : NEAR, _filled_ellipse : NEAR
EXTRN _palette : NEAR, _allpalette : NEAR
EXTRN _color : NEAR, _fillstyle : NEAR
EXTRN _linestyle : NEAR, _textstyle : NEAR
EXTRN _text : NEAR, _textsiz : NEAR
EXTRN _floodfill : NEAR, _getpixel : NEAR
EXTRN _setpixel : NEAR, _bitmaputil : NEAR
EXTRN _savebitmap : NEAR, _restorebitmap : NEAR
EXTRN _setclip : NEAR, _color_query : NEAR
BGI DEBUG ; Defining a Debugging Driver
DDOVEC DW _install ; Driver initialization and installation
; Input: AX=Command # CX = Parameter
; Output: Varies according to command
DW _init ; Initialize device for output
; Input: ES:BX points to information table
; Output: None
DW _clear ; Clear graphics device and ready it for new
; output. (Clear Screen, Load Paper, ... )
; Input: None
; Output: None
DW _post ; Post - Make picture visible. Enable screen,
; print paper, eject current sheet, ...
; Input: None
; Output: None
DW _move ; Set Current Drawing Pointer to value.
; Input: AX = X coord, BX = Y Coord
; Output: None
DW _draw ; Draw a line from the Current Pointer to
; the given coordinate.
; Input: AX = X coord, BX = Y Coord
; Output: None
DW _vect ; Draw a line between the given coordinate
; pairs.
; Input: AX = X Start, BX = Y Start
; CX = X End, DX = Y End
; Output: None
DW EMULATE ; Emulated polygon
DW _bar ; Draw a filled rectangle with the CP as the
; Lower Left corner, and the given coordinate
; as the upper right.
; Input: AX = X Corner BX = Y Corner
; CX = Depth for #D bars
; DX = Draw Top Flag (DX<>0 Draw Top)
; Output: None
DW _patbar ; Draw a patterned rectangle with the given
; coorinate pair. The pattern is provided by
; the set fill pattern entry.
; Input: AX = X Corner BX = Y Corner
; CX = X Corner DX = Y Corner
; Output: None
DW _arc ; Draw an elliptical arc from the given start
; angle to the given end angle, using the CP
; as the Center Point, and the given X and Y
; Radii. Angles are 0-360 degrees.
; Input: AX = Start Angle BX = End Angle
; CX = X radius of arc
; DX = Y radius of arc
; Output: None
DW _pieslice ; Draw an elliptical sector from the given start
; angle to the given end angle, using the CP
; as the Center Point, and the given X and Y
; Radii. Angles are 0-360 degrees.
; Input: AX = Start Angle BX = End Angle
; CX = X radius of arc
; DX = Y radius of arc
; Output: None
DW _filled_ellipse ; Draw an ellipse using the CP as the Center
; Point, and the given X and Y radii.
; Input: AX = X Radius of ellipse
; BX = Y Radius of ellipse
; Output: None
DW _palette ; Set a palette entry to a given color.
; Input: AX = Index and Command Code
; BX, CX, DX as needed
; Output: None
DW _allpalette ; Load the palette with a table of colors.
; Input: ES:BX = Palette Table to load
; Output: None
DW _color ; Set the palette indexs for the current
; drawing color and the current fill color.
; Input: AL = Drawing Color
; AH = Fill color
; Output: None
DW _fillstyle ; Set current fill pattern. The fill pattern is
; set to the pattern specified. If the pattern
; number is -1 then the pattern is define in
; a user supplied array.
; Input: AL = Pattern # (-1 for user def)
; ES:BX = User pattern data if needed
; Output: None
DW _linestyle ; Set current line style. The line style is
; set to the style specified. If the style
; number is -1 then the style is define in
; a user supplied pattern.
; Input: AL = Style # (-1 for user def)
; BX = User Line Pattern
; CX = Line Width (1 or 3)
; Output: None
DW _textstyle ; Set the text attributes for font rendering
; Input: AL = Font Number
; AH = Font Path and Direction
; BX = Desired X Character Size
; CX = Desired Y Character Size
; Output: BX = Actual X Character Size
; CX = Actual Y Character Size
DW _text ; Draw a string in the current font with the
; justification point at the CP.
; Input: ES:BX = Pointer to string
; CX = String Length
DW _textsiz ; Calculate the dimensions (in pixels) of an
; input text string.
; Input: ES:BX = Pointer to string
; CX = String Length
; Output: BX = Width of string
; CX = Height of string
DW RESERVED ; RESERVED
DW _floodfill ; Do a floodfill in the current color using
; the given (X,Y) address as the seed.
; Input: AX = X Coord BX = Y Coord
; Output: None.
DW _getpixel ; Read a pixel from the given coord.
; Input: AX = X Coord BX = Y Coord
; Output: DL = Pixel value read
DW _setpixel ; Write a pixel to the given coord.
; Input: AX = X Coord BX = Y Coord
; DL = Pixel value read
; Output: None.
DW _bitmaputil ; Return a pointer to a table of misc driver
; utilities. The following describes the table.
; Input: None.
; Output: ES:BS = Base of table
;
; DW GOTOGRAPHIC
; DW EXITGRAPHIC
; DW PUTPIX
; DW GETPIX
; DW (BITS PER PIXEL)
; DW SETPAGE
; DW SETVISUAL
; DW SETWRITEMODE
DW _savebitmap ; Save a portion of the screen to CPU memory.
; Input: ES:BX = Pointer to CPU buffer
; SI = Start X coord of save block
; DI = Start Y coord of save block
; CX = End X coord of save block
; DX = End Y coord of save block
; Output: (In Save Block)
DW _restorebitmap ; Restore a portion of the screen from CPU memory.
; Input: ES:BX = Pointer to CPU buffer
; SI = Start X coord of save block
; DI = Start Y coord of save block
; CX = End X coord of save block
; DX = End Y coord of save block
; AL = Write mode for block writing
; Output: None.
DW _setclip ; Set the clipping window to the rectangle
; defined by the two (X,Y) pairs
; Input: AX = Upper Left X coord
; BX = Upper Left Y coord
; CX = Lower Right X coord
; DX = Lower Right Y coord
; Output: None.
DW _color_query ; Return the parameters of the device color
; table (Size, Default Palette, etc)
; Input: AL = Command for query
; Output: As required per command.
DW 35 DUP (NONE) ; Reserved Entry Points
_TEXT ENDS ; Close the code segment
END
