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790 lines
24 KiB
PHP
790 lines
24 KiB
PHP
;;; ============================================================
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;;; MouseGraphics ToolKit (w/ Graphics Primitives)
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;;; ============================================================
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.scope MGTK
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MLI := $4000
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;; MLI-style call (jsr MLI ; .byte call ; .addr params)
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;; Call from AUX (RAMRDON/RAMWRTON)
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;;; ============================================================
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;;; Graphics Primitives
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;;; ============================================================
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;;; Point record:
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;;;
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;;; .word xcoord
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;;; .word ycoord
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;;; Rect record:
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;;;
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;;; .word x1
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;;; .word y1
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;;; .word x2
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;;; .word y2
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;;; MapInfo record:
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;;;
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;;; Point viewloc
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;;; .addr mapbits screen_mapbits
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;;; .byte mapwidth screen_mapwidth
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;;; .byte reserved
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;;; Rect maprect a.k.a. cliprect
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;;; GrafPort record:
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;;;
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;;; MapInfo portmap
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;;; .res 8 penpattern
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;;; .byte colormask_and
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;;; .byte colormask_or
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;;; Point penloc
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;;; .byte penwidth horizontal pen thickness
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;;; .byte penheight vertical pen thickness
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;;; .byte penmode
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;;; .byte textback text background
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;;; .addr textfont
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;;; PolyList record:
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;;; .byte count number of vertices in this polygon
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;;; .byte last high bit set if there are more polygons
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;;; Point vertex1
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;;; Point vertex2
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;;; ...
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;;; Font record:
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;;;
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;;; .byte fonttype 0=regular, $80=double-width
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;;; .byte lastchar char code of last character (usually $7F)
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;;; .byte height pixels (1-16)
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;;; .res N charwidth pixels, for each char
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;;; .res N row0 bits
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;;; .res N row0right bits (double-width only)
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;;; ...
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NoOp := $00 ; No-op
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;;; (no parameters)
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;;; --------------------------------------------------
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;;; Initialization Commands
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InitGraf := $01
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;;; (no parameters)
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SetSwitches := $02 ; Configure display switches
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;;; .byte flags bit 0=hires, 1=page2, 2=mixed, 3=text
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;;; --------------------------------------------------
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;;; GrafPort Commands
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InitPort := $03 ; Initialize GrafPort to standard values
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;;; (input is address of GrafPort record)
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SetPort := $04 ; Set current port as specified
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;;; (input is address of GrafPort record)
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GetPort := $05 ; Get pointer to current port
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;;; .addr port (out)
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SetPortBits := $06 ; Set just the mapinfo (viewloc, mapbits)
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;;; (input is address of MapInfo record)
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SetPenMode := $07 ; Set the current pen mode
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;;; .byte mode pen*/notpen*
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SetPattern := $08 ; Set the current pattern
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;;; .res 8 pattern 8x8 pixel pattern for PaintRect calls
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SetColorMasks := $09 ; Set the current color masks
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;;; .byte and_mask
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;;; .byte or_mask
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SetPenSize := $0A ; Set the current pen size
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;;; .byte penwidth horizontal pen thickness
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;;; .byte penheight vertical pen thickness
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SetFont := $0B ; Set the current font
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;;; .addr textfont font definition
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SetTextBG := $0C ; Set the current text background
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;;; .byte backcolor 0=black, $7F=white
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;;; --------------------------------------------------
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;;; Drawing Commands
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Move := $0D ; Set current pen location (relative)
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;;; .word xdelta
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;;; .word ydelta
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MoveTo := $0E ; Set current pen location (absolute)
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;;; Point pos
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Line := $0F ; Draw line from current pen location (relative)
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;;; .word xdelta
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;;; .word ydelta
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LineTo := $10 ; Draw line from current pen location (absolute)
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;;; Point pos
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PaintRect := $11 ; Fill rectangle with selected simple pattern/thickness
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;;; Rect rect
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FrameRect := $12 ; Draw rectangle with selected simple pattern/thickness
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;;; Rect rect
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InRect := $13 ; Is current position in bounds? A=$80 true, 0 false
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;;; Rect rect
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PaintBits := $14 ; Draw pattern
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;;; (input is address of MapInfo record)
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PaintPoly := $15
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;;; (input is address of PolyList record)
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FramePoly := $16 ; Draw multiple closed polygons
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;;; (input is address of PolyList record)
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InPoly := $17 ; Is current position in bounds? A=$80 true, 0 false
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;;; (input is address of PolyList record)
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;;; --------------------------------------------------
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;;; Text Commands
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TextWidth := $18 ; Measure the width of a string in pixels
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;;; .addr data
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;;; .byte length
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;;; .word width (out) result in pixels
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DrawText := $19 ; Drawn at penpos as left, baseline
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;;; .addr data
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;;; .byte length
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;;; --------------------------------------------------
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;;; Utility Commands
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SetZP1 := $1A ; Configure lower half of ZP usage by API (speed vs. convenience)
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SetZP2 := $1B ; Configure upper half ZP usage by API (speed vs. convenience)
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;;; .byte preserve 0=stash/no auto restore; 1=restore now and onward
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Version := $1C ; Get toolkit version
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;;; .byte (out) major
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;;; .byte (out) minor
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;;; .byte (out) patch
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;;; .byte (out) status
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;;; .word (out) number
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;;; ============================================================
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;;; MouseGraphics ToolKit Calls
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;;; ============================================================
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;;; --------------------------------------------------
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;;; Initialization Calls
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StartDeskTop := $1D ; Inits state, registers interrupt handler, draws desktop
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;;; .byte machine ROM FBB3 ($06 = IIe or later)
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;;; .byte subid ROM FBC0 ($EA = IIe, $E0 = IIe enh/IIgs, $00 = IIc/IIc+)
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;;; .byte op_sys 0=ProDOS, 1=Pascal
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;;; .byte slot_num Mouse slot, 0 = search (will be filled in)
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;;; .byte use_interrupts 0=passive, 1=interrupt
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;;; .addr sysfontptr
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;;; .addr savearea buffer for saving screen data (e.g. behind menus)
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;;; .word savesize bytes
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StopDeskTop := $1E ; Deallocates interrupt, hides cursor
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;;; (no parameters)
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SetUserHook := $1F
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;;; .byte hook_id 0=before, 1=after event checking
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;;; .addr routine_ptr 0=remove hook_id
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AttachDriver := $20 ; Install pointer driver; A=0 on success, $95 if mouse disabled
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;;; .addr hook Mouse hook routine to install
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;;; .addr mouse_state (out) Address of mouse state (.word x, y; .byte status)
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ScaleMouse := $21 ; Set mouse/screen scaling
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;;; .byte x_exponent x-scale factor for mouse, 0...3
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;;; .byte y_exponent y-scale factor for mouse, 0...3
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KeyboardMouse := $22 ; Next operation will be performed by keyboard
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;;; (no parameters)
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GetIntHandler := $23 ; Get address of interrupt handler
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;;; .addr handler (out) Address of interrupt handler (after cld)
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;;; --------------------------------------------------
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;;; Cursor Manager Calls
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;;; Cursor record:
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;;;
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;;; .res 24 bitmap 2x12 byte bitmap (XOR'd after mask)
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;;; .res 24 mask 2x12 byte mask (OR'd with screen)
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;;; .byte hotx hotspot coords (pixels)
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;;; .byte hoty
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SetCursor := $24 ; Set cursor definition
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;;; (input is address of Cursor record)
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ShowCursor := $25 ; Return cursor to visibility
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;;; (no parameters)
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HideCursor := $26 ; Cursor hidden until ShowCursor call
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;;; (no parameters)
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ObscureCursor := $27 ; Cursor hidden until moved
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;;; (no parameters)
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GetCursorAddr := $28 ; Get cursor definition
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;;; .addr definition (out) Address of cursor record
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;;; --------------------------------------------------
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;;; Event Manager Calls
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;;; Event record:
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;;;
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;;; .byte kind event_kind_*
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;;; if kind is event_kind_key_down:
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;;; .byte key (ASCII code; high bit clear)
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;;; .byte modifiers (0=none, 1=open-apple, 2=solid-apple, 3=both)
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;;; if kind is event_kind_update:
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;;; .byte window_id
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;;; otherwise:
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;;; .word xcoord
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;;; .word ycoord
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CheckEvents := $29 ; Process mouse/kbd if GetEvent will be delayed.
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;;; (no parameters)
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GetEvent := $2A
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;;; (parameter is address of Event record)
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FlushEvents := $2B
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;;; (no parameters)
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PeekEvent := $2C
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;;; (parameter is address of Event record)
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PostEvent := $2D ; Post event to queue
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;;; (parameter is address of Event record)
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SetKeyEvent := $2E ; If set, keypresses are ignored by Tool Kit
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;;; .byte handle_keys high bit set = ignore keyboard, otherwise check
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;;; --------------------------------------------------
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;;; Menu Manager Calls
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;;; Menu Bar record:
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;;;
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;;; .word count Number of menu bar items
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;;; (array of...)
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;;; .byte menu_id Menu identifier
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;;; .byte disabled Flag
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;;; .addr title Address of length-prefixed string
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;;; .addr menu Address of Menu record
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;;; .res 6 reserved Reserved
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;;; ...
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;;;
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;;; Menu record:
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;;;
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;;; .byte count Number of items in menu
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;;; .res 5 reserved Reserved
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;;; (array of...)
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;;; .byte options bit 0=OA, 1=SA, 2=mark, 5=check, 6=filler, 7=disabled
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;;; .byte mark_char Custom mark character if mark option set
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;;; .byte char1 ASCII code of shortcut #1 (e.g. uppercase B); or 0
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;;; .byte char2 ASCII code of shortcut #2 (e.g. lowercase b, or same); or 0
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;;; .addr name Address of length-prefixed string
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;;; ...
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InitMenu := $2F
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;;; .byte solid_char char code to use for solid apple glyph
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;;; .byte open_char char code to use for open apple glyph
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;;; .byte check_char char code to use for checkmark glyph
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;;; .byte control_char char code to use for control key glyph
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SetMenu := $30 ; Configure (and draw) menu
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;;; (input is address of Menu Bar record)
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MenuSelect := $31 ; Enter modal loop for handling mouse-down on menu bar
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;;; .byte menu_id (out) Top level menu identifier, or 0 if none
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;;; .byte menu_item (out) Index (1-based) of item in menu, or 0 if none
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MenuKey := $32 ; Find menu item corresponding to keypress
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;;; .byte menu_id (out)
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;;; .byte menu_item (out)
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;;; .byte which_key
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;;; .byte key_mods bit 0=OA, bit 1=SA
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HiliteMenu := $33 ; Toggle highlight state of menu
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;;; .byte menu_id
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DisableMenu := $34
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;;; .byte menu_id
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;;; .byte disable 0=enable, 1=disable
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DisableItem := $35
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;;; .byte menu_id
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;;; .byte menu_item
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;;; .byte disable 0=enable, 1=disable
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CheckItem := $36
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;;; .byte menu_id
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;;; .byte menu_item
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;;; .byte check 0=unchecked, 1=checked
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SetMark := $37
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;;; .byte menu_id
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;;; .byte menu_item
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;;; .byte set_char 0=use checkmark, 1=use mark_char
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;;; .byte mark_char char code to use for mark
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;;; --------------------------------------------------
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;;; Window Manager Calls
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;;; WInfo record:
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;;;
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;;; .byte id
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;;; .byte options option_*
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;;; .addr title
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;;; .byte hscroll scroll_option_*
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;;; .byte vscroll scroll_option_*
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;;; .byte hthumbmax
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;;; .byte hthumbpos
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;;; .byte vthumbmax
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;;; .byte vthumbpos
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;;; .byte status
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;;; .byte reserved
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;;; .word mincontwidth minimum content size (horizontal)
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;;; .word mincontlength minimum content size (vertical)
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;;; .word maxcontwidth maximum content size (horizontal)
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;;; .word maxcontlength maximum content size (vertical)
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;;; GrafPort windowport GrafPort record
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;;; .addr nextwinfo address of next lower window in stack
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OpenWindow := $38
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;;; (input is address of WInfo record)
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CloseWindow := $39
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;;; .byte window_id
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CloseAll := $3A
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;;; (no parameters)
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GetWinPtr := $3B ; Get pointer to window params by id; A=0 on success
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;;; .byte window_id
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;;; .addr window_ptr (out) winfo address
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GetWinPort := $3C ; Get drawing state of window (possibly clipped)
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;;; .byte window_id
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;;; .addr port address of grafport to populate
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SetWinPort := $3D ; Update port of window
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;;; .byte window_id
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;;; .addr port GrafPort to copy from
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BeginUpdate := $3E ; Respond to update event for window
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;;; .byte window_id
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EndUpdate := $3F
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;;; (no parameters)
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FindWindow := $40
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;;; .word mousex screen coordinates
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;;; .word mousey
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;;; .byte which_area (out) area_*
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;;; .byte window_id (out) of window
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FrontWindow := $41 ; Get id of top window
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;;; .byte window_id (out) window, or 0 if none
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SelectWindow := $42 ; Make window topmost
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;;; .byte window_id
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TrackGoAway := $43
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;;; .byte clicked (out) 0 = cancelled, 1 = close
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DragWindow := $44
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;;; .byte window_id
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;;; .word dragx mouse coords
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;;; .word dragy
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;;; .byte moved high bit set if moved, clear if not
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GrowWindow := $45
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;;; .byte window_id
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;;; .word mousex
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;;; .word mousey
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;;; .byte itgrew (out) 0 = no change, 1 = moved
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ScreenToWindow := $46 ; Map screen coords to content coords
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;;; .byte window_id
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;;; .word screenx
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;;; .word screeny
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;;; .word windowx (out)
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;;; .word windowy (out)
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WindowToScreen := $47 ; Map content coords to screen coords
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;;; .byte window_id
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;;; .word windowx
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;;; .word windowy
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;;; .word screenx (out)
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;;; .word screeny (out)
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;;; --------------------------------------------------
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;;; Control Manager Calls
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FindControl := $48
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;;; .word mousex
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;;; .word mousey
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;;; .byte which_ctl ctl_*
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;;; .byte which_part part_*
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SetCtlMax := $49
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;;; .byte which_ctl ctl_*_scroll_bar
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;;; .byte ctlmax maximum value
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TrackThumb := $4A
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;;; .byte which_ctl ctl_*_scroll_bar
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;;; .word mousex
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;;; .word mousey
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;;; .byte thumbpos (out) 0...255
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;;; .byte thumbmoved (out) 0 = no change, 1 = moved
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UpdateThumb := $4B
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;;; .byte which_ctl ctl_*_scroll_bar
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;;; .byte thumbpos new position 0...250
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ActivateCtl := $4C ; Activate/deactivate scroll bar
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;;; .byte which_ctl ctl_*_scroll_bar
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;;; .byte activate 0=deactivate, 1=activate
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;;; $4D ???
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;;; (input length: 16 bytes)
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;;; $4E ???
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;;; (input length: 2 bytes)
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;;; ============================================================
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;;; Graphics Primitives Constants
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;;; Used in GetWinPort / SetPortBits
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screen_mapbits := $2000 ; Screen address
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screen_mapwidth := $80 ; Stride in bytes
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;;; Used in SetPenMode
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pencopy := 0
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penOR := 1
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penXOR := 2
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penBIC := 3
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notpencopy := 4
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notpenOR := 5
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notpenXOR := 6
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notpenBIC := 7
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;;; Used in SetZP1
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zp_overwrite := 0
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zp_preserve := 1<<7
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;;; Used in GrafPorts
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colormask_and := $FF
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colormask_or := $00
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textbg_black := $00
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textbg_white := $7F
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;;; ============================================================
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;;; MouseGraphics ToolKit Constants
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;;; Used in GetEvent
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event_kind_no_event := 0 ; No mouse or keypress
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event_kind_button_down := 1 ; Mouse button was depressed
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event_kind_button_up := 2 ; Mouse button was released
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event_kind_key_down := 3 ; Key was pressed
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event_kind_drag := 4 ; Mouse button still down
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event_kind_apple_key := 5 ; Mouse button was depressed, modifier key down
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event_kind_update := 6 ; Window update needed
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event_modifier_open_apple := 1 << 0
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event_modifier_solid_apple := 1 << 1
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;;; Used in FindWindow
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area_desktop := 0
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area_menubar := 1
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area_content := 2 ; Includes scroll bars
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area_dragbar := 3
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area_grow_box := 4
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area_close_box := 5
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;;; Used in FindControl, TrackThumb, UpdateThumb
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ctl_not_a_control := 0
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ctl_vertical_scroll_bar := 1
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ctl_horizontal_scroll_bar := 2
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ctl_dead_zone := 3
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;;; Used in FindControl
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part_up_arrow := 1
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part_left_arrow := 1
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part_down_arrow := 2
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part_right_arrow := 2
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part_page_up := 3
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part_page_left := 3
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part_page_down := 4
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part_page_right := 4
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part_thumb := 5
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;;; Used in OpenWindow
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option_dialog_box := 1 << 0
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option_go_away_box := 1 << 1
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option_grow_box := 1 << 2
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scroll_option_none := 0
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scroll_option_present := 1 << 7
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scroll_option_thumb := 1 << 6
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scroll_option_active := 1 << 0
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scroll_option_normal := scroll_option_present | scroll_option_thumb | scroll_option_active
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;;; Used in menu structs
|
|
menuopt_open_apple := 1 << 0
|
|
menuopt_solid_apple := 1 << 1
|
|
menuopt_item_has_mark := 1 << 2
|
|
menuopt_item_is_checked := 1 << 5
|
|
menuopt_item_is_filler := 1 << 6
|
|
menuopt_disable_flag := 1 << 7
|
|
|
|
disablemenu_enable := 0
|
|
disablemenu_disable := 1
|
|
disableitem_enable := 0
|
|
disableitem_disable := 1
|
|
|
|
checkitem_uncheck := 0
|
|
checkitem_check := 1
|
|
|
|
;;; Used in ActivateCtl
|
|
activatectl_deactivate := 0
|
|
activatectl_activate := 1
|
|
|
|
;;; Response from InRect/InPoly
|
|
inrect_inside := $80
|
|
inrect_outside := $00
|
|
inpoly_inside := $80
|
|
inpoly_outside := $00
|
|
|
|
;;; ============================================================
|
|
;;; Offsets
|
|
|
|
grafport_offset_viewloc := 0
|
|
grafport_offset_viewloc_xcoord := 0
|
|
grafport_offset_viewloc_ycoord := 2
|
|
grafport_offset_mapbits := 4
|
|
grafport_offset_mapwidth := 6
|
|
grafport_offset_maprect := 8
|
|
grafport_offset_pattern := 16
|
|
grafport_offset_colormasks := 24
|
|
grafport_offset_penloc := 26
|
|
grafport_offset_penwidth := 30
|
|
grafport_offset_penheight := 31
|
|
grafport_offset_penmode := 32
|
|
grafport_offset_textback := 33
|
|
grafport_offset_textfont := 34
|
|
grafport_size := 36
|
|
|
|
winfo_offset_window_id := 0
|
|
winfo_offset_options := 1
|
|
winfo_offset_title := 2
|
|
winfo_offset_hscroll := 4
|
|
winfo_offset_vscroll := 5
|
|
winfo_offset_hthumbmax := 6
|
|
winfo_offset_hthumbpos := 7
|
|
winfo_offset_vthumbmax := 8
|
|
winfo_offset_vthumbpos := 9
|
|
winfo_offset_status := 10
|
|
winfo_offset_mincontwidth := 12
|
|
winfo_offset_mincontheight := 14
|
|
winfo_offset_maxcontwidth := 16
|
|
winfo_offset_maxcontheight := 18
|
|
winfo_offset_port := 20
|
|
winfo_offset_nextwinfo := 56
|
|
winfo_size := 58
|
|
|
|
menu_size := 12
|
|
|
|
menu_item_size := 6
|
|
|
|
short_event_size := 4 ; events that don't have mouse coordinates
|
|
event_size := 5 ; any kind of event
|
|
|
|
cursor_height := 12
|
|
cursor_width := 2
|
|
|
|
cursor_offset_mask := cursor_width * cursor_height
|
|
cursor_offset_hotspot := 2 * cursor_width * cursor_height
|
|
cursor_size := cursor_offset_hotspot + 2
|
|
|
|
font_offset_fonttype := 0
|
|
font_offset_lastchar := 1
|
|
font_offset_height := 2
|
|
font_offset_charwidth := 3
|
|
|
|
|
|
;;; Errors
|
|
|
|
error_empty_object := $81
|
|
error_bad_object := $82
|
|
error_font_too_big := $83
|
|
|
|
error_invalid_op_sys := $90
|
|
error_no_mouse := $92
|
|
error_invalid_irq_setting := $93
|
|
error_invalid_hook := $94
|
|
error_desktop_already_initialized := $95
|
|
error_irq_in_use := $97
|
|
error_invalid_event := $98
|
|
error_event_queue_full := $99
|
|
error_menu_not_found := $9A
|
|
error_menu_item_not_found := $9B
|
|
error_insufficient_savebehind_area := $9C
|
|
error_window_already_exists := $9D
|
|
error_window_id_required := $9E
|
|
error_window_not_found := $9F
|
|
error_no_active_window := $A0
|
|
error_window_not_draggable := $A1
|
|
error_window_not_resizable := $A2
|
|
error_window_obscured := $A3
|
|
error_control_not_found := $A4
|
|
|
|
|
|
.endscope ; MGTK
|
|
|
|
;;; ============================================================
|
|
;;; Macros
|
|
|
|
;;; Call an MGTK entry point:
|
|
;;; MGTK_CALL n - params is $0000
|
|
;;; MGTK_CALL n, params_addr
|
|
;;; MGTK_CALL m, params_addr, label - params_addr is labeled for modifying
|
|
|
|
.macro MGTK_CALL op, addr, label
|
|
jsr MGTK::MLI
|
|
.byte op
|
|
|
|
.if .paramcount > 2
|
|
label := *
|
|
.endif
|
|
|
|
.if .paramcount > 1
|
|
.addr addr
|
|
.else
|
|
.addr 0
|
|
.endif
|
|
.endmacro
|
|
|
|
;;; ------------------------------------
|
|
|
|
;;; Rect definition. Option fifth param gives scope.
|
|
;;; DEFINE_RECT 0,0,20,30
|
|
;;; DEFINE_RECT 0,0,20,30,rect ; rect::x1, rect::y1, rect::x2, rect::y2
|
|
.macro DEFINE_RECT left, top, right, bottom, opt_scope
|
|
.if .paramcount > 4
|
|
.scope opt_scope
|
|
x1: .word left
|
|
y1: .word top
|
|
x2: .word right
|
|
y2: .word bottom
|
|
.endscope
|
|
.else
|
|
.word left
|
|
.word top
|
|
.word right
|
|
.word bottom
|
|
.endif
|
|
.endmacro
|
|
|
|
;;; Point definition. Option third param gives scope.
|
|
;;; DEFINE_POINT 10,20
|
|
;;; DEFINE_POINT 10,20,pt ; pt::xcoord, pt::ycoord
|
|
.macro DEFINE_POINT left, top, opt_scope
|
|
.if .paramcount > 2
|
|
.scope opt_scope
|
|
xcoord: .word left
|
|
ycoord: .word top
|
|
.endscope
|
|
.else
|
|
.word left
|
|
.word top
|
|
.endif
|
|
.endmacro
|
|
|
|
;;; String definition w/ inline data, for use with DrawText
|
|
;;; DEFINE_STRING "abc"
|
|
;;; DEFINE_STRING {"Ring a bell",$07,"!!!"} ; control characters
|
|
;;; Optional second param gives label to internal Pascal string
|
|
|
|
.macro DEFINE_STRING str, opt_label
|
|
.local data
|
|
.local end
|
|
|
|
.addr data ; textptr
|
|
.if .paramcount > 1
|
|
opt_label:
|
|
.endif
|
|
.byte end - data ; textlen
|
|
|
|
data: .byte str
|
|
end:
|
|
.endmacro
|
|
|
|
;;; Menus (common cases; other options are possible)
|
|
|
|
.macro DEFINE_MENU_BAR count
|
|
.byte count ; num menus
|
|
.byte 0 ; reserved
|
|
.endmacro
|
|
|
|
.macro DEFINE_MENU_BAR_ITEM id, label, menu
|
|
.byte id ; menu id
|
|
.byte 0 ; disable flag
|
|
.addr label ; title pointer
|
|
.addr menu ; pointer to menu
|
|
.res 6, 0 ; 6 reserved bytes
|
|
.endmacro
|
|
|
|
.macro DEFINE_MENU count
|
|
.byte count ; num items
|
|
.res 5, 0 ; 5 reserved bytes
|
|
.endmacro
|
|
|
|
.macro DEFINE_MENU_ITEM saddr, shortcut1, shortcut2
|
|
.if .paramcount > 1
|
|
|
|
.byte MGTK::menuopt_open_apple ; option byte
|
|
.byte 0 ; mark_char
|
|
.byte shortcut1 ; char1
|
|
.byte shortcut2 ; char2
|
|
.addr saddr ; item_str_pointer
|
|
|
|
.else
|
|
|
|
.byte 0 ; option byte
|
|
.byte 0 ; mark_char
|
|
.byte 0 ; char1
|
|
.byte 0 ; char2
|
|
.addr saddr ; item_str_pointer
|
|
|
|
.endif
|
|
.endmacro
|
|
|
|
.macro DEFINE_MENU_SEPARATOR
|
|
.byte MGTK::menuopt_item_is_filler ; option byte
|
|
.byte 0 ; mark_char
|
|
.byte 19 ; char1 - Ctrl+S for separator ???
|
|
.byte 0 ; char2
|
|
.addr 0 ; item_str_pointer
|
|
.endmacro
|
|
|
|
;;; ------------------------------------
|
|
|
|
;;; Define pattern for PaintBits - low 7 bits are reversed
|
|
;;; e.g. .byte px(%1000000)
|
|
;;; px() has high bit clear, PX() has high bit set
|
|
.define px(bits) (((bits&$40)>>6)|((bits&$20)>>4)|((bits&$10)>>2)|(bits&$8)|((bits&$4)<<2)|((bits&$2)<<4)|((bits&$1)<<6))
|
|
.define PX(bits) (((bits&$40)>>6)|((bits&$20)>>4)|((bits&$10)>>2)|(bits&$8)|((bits&$4)<<2)|((bits&$2)<<4)|((bits&$1)<<6)|$80)
|