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aalib.nim
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#
# AA-lib, an ascii-art gfx library
# Copyright (C) 1998,1999,2001 by
#
# Jan Hubicka ([email protected])
# Kamil Toman ([email protected])
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Library General Public
# License along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
const
AA_LIB_VERSION* = 1
AA_LIB_MINNOR* = 4 #lol.
when defined(Linux):
const LibName* = "libaa.so.1.0.4"
else:
const LibName* = "aa.dll.1.0.4"
{.push callconv:cdecl.}
const
AA_LIB_VERSIONCODE* = 104000
AA_NATTRS* = 5
AA_NPARAMS* = 5
AA_RESIZE* = 258
AA_MOUSE* = 259
AA_UP* = 300
AA_DOWN* = 301
AA_LEFT* = 302
AA_RIGHT* = 303
AA_BACKSPACE* = 304
AA_ESC* = 305
AA_UNKNOWN* = 400
AA_RELEASE* = 65536
AA_NORMAL_MASK* = 1
AA_DIM_MASK* = 2
AA_BOLD_MASK* = 4
AA_BOLDFONT_MASK* = 8
AA_REVERSE_MASK* = 16
AA_ALL* = 128
AA_EIGHT* = 256
AA_EXTENDED* = (AA_ALL or AA_EIGHT)
# The characters may be output with following attributes:
type
Tattribute* {.size:sizeof(cint).} = enum
AA_NORMAL = 0, # Normal characters.
AA_DIM = 1, # Dark characters.
AA_BOLD = 2, # Bright characters.
AA_BOLDFONT = 3, # Characters rendered in bold font.
AA_REVERSE = 4, # Reversed (black on whilte) characters.
AA_SPECIAL = 5
const
AA_NONE* = 0
AA_ERRORDISTRIB* = 1 # Error distribution.
AA_FLOYD_S* = 2 # Floyd-Steinberg dithering.
AA_DITHERTYPES* = 3
const
AA_BUTTON1* = 1
AA_BUTTON2* = 2
AA_BUTTON3* = 4
AA_MOUSEMOVEMASK* = 1
AA_MOUSEPRESSMASK* = 2
AA_PRESSEDMOVEMASK* = 4
AA_MOUSEALLMASK* = 7
AA_HIDECURSOR* = 8
AA_SENDRELEASE* = 1
AA_KBDALLMASK* = 1
AA_USE_PAGES* = 1
AA_NORMAL_SPACES* = 8
# These structures are subject to change in future. Thus they are hidden
# behind final user.
type
Tedit* = object
type
Tfont* = object
data*: ptr cuchar # Bitmap of 8xheight font.
height*: cint # Height of font.
name*: cstring # Long name of font.
shortname*: cstring # One-word name of the font.
type
Thardware_params* = object
font*: ptr Tfont #Font bitmap used by hardware.
supported*: cint #Mask of supported features.
# Following masks are available:
# AA_NORMAL_MASK, AA_DIM_MASK,
# AA_BOLD_MASK, AA_BOLDFONT_MASK,
# AA_REVERSE_MASK
#
minwidth*: cint
minheight*: cint #Minimal alowed screen size
# in characters
maxwidth*: cint
maxheight*: cint #Maximal alowed screen size
# in characters
recwidth*: cint
recheight*: cint #Recommended screen size (driver
# attempts to find resolution nearest
# to this value within given bounds
# bit min and max fields
mmwidth*: cint
mmheight*: cint #Physical screen size
width*: cint
height*: cint #Current screen size
dimmul*: cdouble #Bright value of dim characters (0 black,
# 1 white)
boldmul*: cdouble #Bright value of bold characters
# (0 black, 1 white)
#
# aa_context contains information about the display. It is passed to most
# of AA-lib functions. The full definition of structure is present just
# for compatibility with older programs. Dirrect access to it's fields
# is not recommended, because you might surfer to problems with future
# releases of AA-lib. Use standard AA-lib functions instead.
#
type
Tcontext* = object
driver*: ptr Tdriver #Current display driver
kbddriver*: ptr Tkbddriver #Current keyboard driver
mousedriver*: ptr Tmousedriver #Current mouse driver
params*: Thardware_params #Parameters of output
# hardware used by AA-lib.
driverparams*: Thardware_params #Parameters of output
# hardware as reported
# by display driver.
mulx*: cint
muly*: cint # Ratio of character size over pixel size
imgwidth*: cint
imgheight*: cint # Dimensions of emulated image
imagebuffer*: ptr cuchar # Virtual buffer containing image
textbuffer*: ptr cuchar # Virtual buffer containing text
attrbuffer*: ptr cuchar # Virtual buffer containing attributes
table*: ptr cushort # Precalculated values used by rendering
# algorithm.
#
# WARNING!
# It is _strongly_ depreached
# to access fields behind this point, because
# they can change in future releases.
filltable*: ptr cushort
parameters*: pointer# TODO "struct paramaters" missing from aalib.h?? ptr parameters
cursorx*: cint
cursory*: cint
cursorstate*: cint # Cursor possition.
mousex*: cint
mousey*: cint
buttons*: cint
mousemode*: cint # Mouse state.
resizehandler*: proc (a2: ptr Tcontext) # Handler to be called when
# resize happends.
driverdata*: pointer # Internal data used by hardware drivers.
kbddriverdata*: pointer
mousedriverdata*: pointer
#
# The hardware driver specification. Used internally by AA-lib only.
# Provided for compatibility with older programs.
#
Tdriver* = object
shortname*: cstring
name*: cstring
init*: proc (a2: ptr Thardware_params; a3: pointer;
a4: ptr Thardware_params; a5: ptr pointer): cint
uninit*: proc (a2: ptr Tcontext)
getsize*: proc (a2: ptr Tcontext; a3: ptr cint; a4: ptr cint)
setattr*: proc (a2: ptr Tcontext; a3: cint)
print*: proc (a2: ptr Tcontext; a3: cstring)
gotoxy*: proc (a2: ptr Tcontext; a3: cint; a4: cint)
flush*: proc (a2: ptr Tcontext)
cursormode*: proc (a2: ptr Tcontext; a3: cint)
#
# The hardware driver specification. Used internally by AA-lib only.
# Provided for compatibility with older programs.
#
Tkbddriver* = object
shortname*: cstring
name*: cstring
flags*: cint
init*: proc (a2: ptr Tcontext; mode: cint): cint
uninit*: proc (a2: ptr Tcontext)
getkey*: proc (a2: ptr Tcontext; a3: cint): cint
#
# The hardware driver specification. Used internally by AA-lib only.
# Provided for compatibility with older programs.
#
Tmousedriver* = object
shortname*: cstring
name*: cstring
flags*: cint
init*: proc (a2: ptr Tcontext; mode: cint): cint
uninit*: proc (a2: ptr Tcontext)
getmouse*: proc (a2: ptr Tcontext; a3: ptr cint; a4: ptr cint;
a5: ptr cint)
cursormode*: proc (a2: ptr Tcontext; a3: cint)
#
# Parameters used for rendering.
#
type
Trenderparams* = object
bright*: cint # Brighness in range 0 (normal) to 255
# (white)
contrast*: cint # Contrast value in range 0 (normal)
# to 127 (white)
gamma*: cfloat # Gama value in the standard range
dither*: cint # Dithering algorithm
inversion*: cint # Set 1 for inversed terminals (black on
# white)
randomval*: cint # Range of random value added to each
# pixel. Used to crate random dithering
# effect.
#
# Output format specification used by aa_save driver.
#
type
Tformat* = object
width*: cint
height*: cint
pagewidth*: cint
pageheight*: cint
flags*: cint
supported*: cint
font*: ptr Tfont
formatname*: cstring
extension*: cstring #fields after this line may change in future versions
head*: cstring
`end`*: cstring
newline*: cstring
prints*: array[AA_NATTRS, cstring]
begin*: array[AA_NATTRS, cstring]
ends*: array[AA_NATTRS, cstring]
conversions*: cstringArray
#
# Initialization data used by aa_save driver.
#
type
Tsavedata* = object
name*: cstring # Base name of the output file. The page number and extension
# is attached automatically.
format*: ptr Tformat # Format to save into.
file*: TFILE # You might specify output file by field too,
# in case the name field is NULL
type
Tlinkedlist* = object
#Treclist* = Tlinkedlist
Tpalette* = array[256, cint]
{.push dynlib: libname, importc: "aa_$1".}
#
# AA-lib driver used to save ascii-art image into file in used specified format.
# Initialize this driver using aa_init function and specify the driver
# dependent parameters in aa_savedata structure to save image into file.
# See the texinfo documentation for details.
#
var save_d*: Tdriver
#
# AA-lib memory driver.
# Used to render ascii-art images into memory.
# You might use this driver to render images into memory and then use your
# own routines to handle them in case you want to avoid AA-lib's output
# mechanizms.
#
var mem_d*: Tdriver
#
# AA-lib help string for the default command line parser.
#
var help*: cstring
#
# NULL terminated array of save formats supported by AA-lib.
#
var formats*: ptr ptr Tformat
var
nhtml_format*: Tformat
html_format*: Tformat
html_alt_format*: Tformat
ansi_format*: Tformat
text_format*: Tformat
more_format*: Tformat
hp_format*: Tformat
hp2_format*: Tformat
irc_format*: Tformat
zephyr_format*: Tformat
htmlk_format*: Tformat
#
# Null-terminated array of available fonts.
#
var fonts*: ptr ptr Tfont
var
font8*: Tfont
font14*: Tfont
font16*: Tfont
font9*: Tfont
fontline*: Tfont
fontgl*: Tfont
fontX13*: Tfont
fontX16*: Tfont
fontX13B*: Tfont
fontcourier*: Tfont
fontvyhen*: Tfont
#
# Names of dithering methods supported by AA-lib.
# NULL terminated array containing the names of supported dithering methods
# as ascii strings.
#
var dithernames*: ptr array[aa_dithertypes, cstring]
#
# NULL-terminated array of output drivers available in AA-lib.
#
var drivers*: ptr ptr Tdriver
var
curses_d*: Tdriver
dos_d*: Tdriver
linux_d*: Tdriver
slang_d*: Tdriver
stdout_d*: Tdriver
stderr_d*: Tdriver
X11_d*: Tdriver
os2vio_d*: Tdriver
#
# NULL-terminated array of keyboard drivers available in AA_lib.
#
var kbddrivers*: ptr ptr Tkbddriver
var
kbd_curses_d*: Tkbddriver
kbd_slang_d*: Tkbddriver
kbd_stdin_d*: Tkbddriver
kbd_dos_d*: Tkbddriver
kbd_X11_d*: Tkbddriver
kbd_os2_d*: Tkbddriver
kbd_linux_d*: Tkbddriver
#
# NULL terminated array of mouse drivers supported by AA-lib.
#
var mousedrivers*: ptr ptr Tmousedriver
var
mouse_curses_d*: Tmousedriver
mouse_gpm_d*: Tmousedriver
mouse_X11_d*: Tmousedriver
mouse_dos_d*: Tmousedriver
mouse_os2_d*: Tmousedriver
#
# List of recommended drivers.
# List of recommended drivers is used by aa_autoinit familly of functions
# and altered by aa_recommend familly of functions.
#
var
kbdrecommended*: ptr Tlinkedlist
mouserecommended*: ptr Tlinkedlist
displayrecommended*: ptr Tlinkedlist
#
# default hardware paramters requested by AA-lib programs. Pa
# Default hardware paramters requested by AA-lib programs. Passed to aa_init
# function familly.
#
var defparams*: Thardware_params
#
# default rendering parameters.
# Default rendering parameters. Passed to aa_render function familly.
#
var defrenderparams*: Trenderparams
# returns width of the output screen in characters.
proc scrwidth*(a: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
# returns height of the output screen in characters.
proc scrheight*(a: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
# returns width of the output screen in millimeters.
proc mmwidth*(a: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
# returns height of the output screen in millimeters.
proc mmheight*(a: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
# returns width of the emulated image in pixels.
proc imgwidth*(a: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
# returns height of the emulated image in pixels.
proc imgheight*(a: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
#
# returns pointer to the framebuffer emulated by AA-lib.
# The framebuffer is simple array of characters specifying
# the brightness value (or palette index depending on the aa_render
# call). The array is organizated in the aa_imgheight (a) rows of
# aa_imgwidth(a) characters.
# Returns pointer to framebuffer emulated by AA-lib.
#
proc image*(a: ptr Tcontext): cstring
# Specifies the AA-lib context to operate on.
#
# returns pointer to the text output buffer used by AA-lib.
# The text output buffer is simple array of characters specifying
# the ascii-value of the characters.
# The array is organizated in the aa_scrheight (a) rows of
# aa_scrwidth(a) characters.
#
# Returns pointer the text output buffer used by AA-lib.
#
proc text*(a: ptr Tcontext): cstring
# Specifies the AA-lib context to operate on.
#
# returns pointer to the text output buffer used by AA-lib.
# The attribute output buffer is simple array of characters specifying
# the attributes.
# The array is organizated in the aa_scrheight (a) rows of
# aa_scrwidth(a) characters.
#
# Returns pointer the text output buffer used by AA-lib.
#
proc attrs*(a: ptr Tcontext): cstring
# Specifies the AA-lib context to operate on.
#
# returns specification of the fonts used by AA-lib rendering routines.
#
proc currentfont*(a: ptr Tcontext): ptr Tfont
# Specifies the AA-lib context to operate on.
#
# easy to use AA-lib initialization function.
# Attempts to find available output driver supporting the specified
# parameters. First attempts to initialize the recommended drivers
# and then in order drivers available in the aa_drivers array
# (all regular output drivers compiled into AA-lib).
# Returns pointer to initialized context structure when succesfull or
# NULL on failure.
#
proc autoinit*(params: ptr Thardware_params): ptr Tcontext
# Hardware parameters you want. Use aa_defparams
# for default values.
#
# easy to use AA-lib keyboard initialization function.
# Attempts to find available keyboard driver supporting the specified
# mode. First attempts to initialize the recommended drivers
# and then in order drivers available in the aa_kbddrivers array
# (all regular output drivers compiled into AA-lib).
#
# Every AA-lib program ought to have call to aa_parseoptions before
# first call to aa_init.
#
# Returns 1 when succesfull or 0 on failure.
#
proc autoinitkbd*(context: ptr Tcontext; mode: cint): cint
# Specifies the AA-lib context to operate on.
# Mask of extra features you request. Can contain
# AA_SENDRELEASE if you are interested in release events
# too.
#
# easy to use AA-lib mouse initialization function.
# Attempts to find available mouse driver supporting the specified
# mode. First attempts to initialize the recommended drivers
# and then in order drivers available in the aa_kbddrivers array
# (all regular output drivers compiled into AA-lib).
# Returns 1 when succesfull or 0 on failure.
#
proc autoinitmouse*(c: ptr Tcontext; mode: cint): cint
# Specifies the AA-lib context to operate on.
# Mask of extra features you request. No such features
# are available in the current AA-lib version.
# insert the given driver on beggining of the list of recommended drivers.
proc recommendhi*(l: ptr ptr Tlinkedlist; name: cstring)
# List to operate on (aa_displayrecommended,
# aa_kbdrecommended or aa_mouserecommended)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# Add the given driver to the end of list of recommended drivers.
proc recommendlow*(l: ptr ptr Tlinkedlist; name: cstring)
# List to operate on (aa_displayrecommended,
# aa_kbdrecommended or aa_mouserecommended)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
proc getfirst*(l: ptr ptr Tlinkedlist): cstring
#init functions
#
# open the output display for AA-lib.
# This is the most primitive AA-lib initialization function.
# Allows better control over the process than the easier to use
# aa_autoinit function.
#
# Every AA-lib program ought to have call to aa_parseoptions before
# first call to aa_init.
#
# returns pointer to new AA-lib context or NULL if failed.
#
proc init*(driver: ptr Tdriver; defparams: ptr Thardware_params;
driverdata: pointer): ptr Tcontext
# Driver you want to use. Available drivers are listed
# in the NULL terminated aa_drivers array.
# Hardware parameters you want. Use aa_defparams
# for default values.
# This pointer is passed dirrectly to driver used
# to specify additional driver dependent parameters.
#
# initialize the AA-lib keyboard driver.
# This is the most primitive AA-lib keyboard initialization function.
# Allows better control over the process than the easier to use
# aa_autoinitkbd function.
# returns 1 on success and 0 on fail.
#
proc initkbd*(context: ptr Tcontext; drv: ptr Tkbddriver; mode: cint): cint
# Specifies the AA-lib context to operate on.
# Driver you wish to use
# Mask of extra features you request. Can contain
# AA_SENDRELEASE if you are interested in release events
# too.
#
# initialize the AA-lib mouse driver.
# This is the most primitive AA-lib keyboard initialization function.
# Allows better control over the process than the easier to use
# aa_autoinitmouse function.
# returns 1 on success and 0 on fail.
#
proc initmouse*(c: ptr Tcontext; d: ptr Tmousedriver; mode: cint): cint
# Specifies the AA-lib context to operate on.
# Driver you wish to use.
# Mask of extra features you request. No such features
# are available in the current AA-lib version.
#uninicializing functions
#
# close the AA-lib context.
# Uninitialize all activated drivers and frees the memory used by context
# structures.
#
proc close*(c: ptr Tcontext)
# Specifies the AA-lib context to operate on.
#
# uninitialize the keyboard driver.
# Calls "uninitialize" function of the keyboard driver. It ought to undo
# all actions done by "initialize" function.
#
proc uninitkbd*(context: ptr Tcontext)
# Specifies the AA-lib context to operate on.
#
# uninitialize the mouse driver.
# Calls "uninitialize" function of the mouse driver. It ought to undo
# all actions done by "initialize" function.
#
proc uninitmouse*(context: ptr Tcontext)
# Specifies the AA-lib context to operate on.
# simple and fast AA-lib rendering function.
# This function does the trick of converting the emulated framebuffer
# into high quality ASCII-art. It is slightly faster and less flexible
# the aa_render function.
#
# Note that to see the effect you need to call aa_flush too.
#
# First call to this function may take a while, because the rendering
# tables are produced.
#
proc fastrender*(c: ptr Tcontext; x1: cint; y1: cint; x2: cint; y2: cint)
# Specifies the AA-lib context to operate on.
# column of top left coner of rendered area
# (in characters!)
# row of top left coner of rendered area
# column of bottom right coner of rendered area
# row of bottom right coner of rendered area
# convert image buffer to ASCII-art.
# This function does the trick of converting the emulated framebuffer
# into high quality ASCII-art. If you want to be really fast, you might
# use aa_fastrender. If you want to emulate palette, use aa_renderpalette.
#
# Note that to see the effect you need to call aa_flush too.
#
# First call to this function may take a while, because the rendering
# tables are produced.
#
proc render*(c: ptr Tcontext; p: ptr Trenderparams; x1: cint; y1: cint;
x2: cint; y2: cint)
# Specifies the AA-lib context to operate on.
# Rendering parametters used to specify brightness, gamma
# correction and other usefull stuff. Use aa_defrenderparams
# for default values.
# column of top left coner of rendered area
# (in characters!)
# row of top left coner of rendered area
# column of bottom right coner of rendered area
# row of bottom right coner of rendered area
proc renderpalette*(c: ptr Tcontext; table: Tpalette; p: ptr Trenderparams;
x1: cint; y1: cint; x2: cint; y2: cint)
proc getrenderparams*(): ptr Trenderparams
proc flush*(c: ptr Tcontext)
# output string to AA-lib output buffers.
# Output given string to AA-lib output buffers. To see the effect you need to
# call aa_flush too.
proc puts*(c: ptr Tcontext; x: cint; y: cint; attr: Tattribute; s: cstring)
# Specifies the AA-lib context to operate on.
# X coordinate of the first character.
# Y coordinate of the first character.
# Attribute to use.
# String to output.
#
# print text to AA-lib output buffers.
# Print given text to AA-lib output buffers. To see the effect you need to
# call aa_flush too.
#
proc printf*(c: ptr Tcontext; x: cint; y: cint; attr: Tattribute; fmt: cstring): cint {.
varargs.}
# Specifies the AA-lib context to operate on.
# X coordinate of the first character.
# Y coordinate of the first character.
# Attribute to use.
# Text to output in standard printf format.
#
# move the hardware cursor (if any) to specified position.
# Move the hardware cursor (if any) to specified position.
# To see the effect you need to call aa_flush too.
#
proc gotoxy*(c: ptr Tcontext; x: cint; y: cint)
# Specifies the AA-lib context to operate on.
# X coordinate of new position.
# Y coordinate of the position.
#
# hide the hardware cursor.
# Hide the hardware cursor.
# This function may be ignored by some drivers.
#
proc hidecursor*(c: ptr Tcontext)
# Specifies the AA-lib context to operate on.
#
# show the hardware cursor.
# Show the hardware cursor.
# This function may not be ignored by some drivers.
#
proc showcursor*(c: ptr Tcontext)
# Specifies the AA-lib context to operate on.
#
# Get mouse position as specified by last mouse event read by aa_getevent.
#
proc getmouse*(c: ptr Tcontext; x: ptr cint; y: ptr cint; b: ptr cint)
# Specifies the AA-lib context to operate on.
# Used to return X coordinate of mouse in characters.
# Used to return Y coordinate of mouse in characters.
# Used to return button mask of mouse.
# (values used are AA_BUTTON1, AA_BUTTON2 and AA_BUTTON3)
#
# hide the mouse cursor.
# Hide the mouse cursor.
# This function may be ignored by some drivers.
#
proc hidemouse*(c: ptr Tcontext)
#
# show the mouse cursor.
# Show the mouse cursor.
# This function may be ignored by some drivers.
#
proc showmouse*(c: ptr Tcontext)
#
# add new font specification to aa_fonts array.
# Returns 1 when succesfull or 0 on failure.
#
proc registerfont*(f: ptr Tfont): cint
# Font specification structure.
#
# alter the "supported" field of hardware_params structure used by AA-lib
# This function can be used to alter "supported" field of hardware-params
# structure used by AA-lib.
#
proc setsupported*(c: ptr Tcontext; supported: cint)
# Specifies the AA-lib context to operate on.
# New mask of requested features. Can contain
# AA_EXTENDED to enable use of all 256 characters
# and AA_EIGHT to enable use of the character numbered
# higher than 127.
# set font specification to be used by rendering functions.
proc setfont*(c: ptr Tcontext; font: ptr Tfont)
# Specifies the AA-lib context to operate on.
# Font specification structure.
#keyboard functions
# return next event from queue.
# Return next even from queue. Optionally wait for even when queue is
# empty.
# Returns next event from queue (values lower than 256 are used to report
# ascii values of pressed keys and higher values have special meanings)
# See the AA-lib texinfo documentation for more details.
# 0 is returned when queue is empty and wait is set to 0.
#
proc getevent*(c: ptr Tcontext; wait: cint): cint
# Specifies the AA-lib context to operate on.
# 1 if you wish to wait for the even when queue is empty.
# return next keypress event from queue.
# Returns next keypress event from queue (values lower than 256 are used
# to report ascii values of pressed keys and higher values are used to
# represent some special keys like arrows)
# See the AA-lib texinfo documentation for more details.
#
proc getkey*(c: ptr Tcontext; wait: cint): cint
# Specifies the AA-lib context to operate on.
# 1 if you wish to wait for the even when queue is empty.
#resize functions
#
# Do resize action. This function ought to be called when application
# takes into account the AA_RESIZE event. The context is reinitialized
# and set to new sizes.
# Returns 0 when no resizing is done and 1 when resizing was succesfull.
#
proc resize*(c: ptr Tcontext): cint
# Specifies the AA-lib context to operate on.
#
# Set user handler to be called on resize event.
#
proc resizehandler*(c: ptr Tcontext; handler: proc (a2: ptr Tcontext))
# Specifies the AA-lib context to operate on.
# Function to be called when resize happends.
#
# parse the standard command line options used by AA-lib.
# Use this function to parse the standard command line options used by
# AA-lib. Every AA-lib program ought to call this function to let user
# specify some extra parameters. The function alters the aa_hardware_params
# and aa_renderparams structures and removes known options from the
# argc/argv lists. It also parse the AAOPTS environment variable.
# When called with NULL for the argc/argv parameters, it parses AAOPTS
# only. At least this call ought to be in every AA-lib program.
# Returns 1 when sucesfull and 0 on failure. The program then can
# print the help text available in aa_help variable.
#
proc parseoptions*(p: ptr Thardware_params; r: ptr Trenderparams;
argc: ptr cint; argv: cstringArray): cint
# Hardware parameters structure to alter. It is expected
# that this structure only with necessary modifications
# will be later used to initialize the AA-lib context.
# Rendering prameters structure to alter. It is expected
# that this structure only with necessary modifications
# will be later used to render images.
# Pointer to argc parameter passed to function "main".
# Pointer to argv parameter passed to function "main".
#
# Simple interactive line editor.
# This function produces the simple interactive line editor that can
# be used by AA-lib programs to input strings.
#
proc edit*(c: ptr Tcontext; x: cint; y: cint; size: cint; s: cstring;
maxsize: cint)
# Specifies the AA-lib context to operate on.
# X coordinate of the edited text.
# Y coordinate of the edited text.
# Length of the editor window.
# Buffer to edit (containing default value).
# Size of the buffer.
#
# Simple interactive line editor provided as helper function.
#
# You might use this function to input strings in AA-lib programs.
# This function initializes the aa_edit structure used by event-based
# editor. You might then call the aa_editkey function when key is pressed.
#
# Returns pointer to edit context when succesfull and NULL on failure.
#
proc createedit*(c: ptr Tcontext; x: cint; y: cint; size: cint; s: cstring;
maxsize: cint): ptr Tedit
# Specifies the AA-lib context to operate on.
# X coordinate of the edited text.
# Y coordinate of the edited text.
# Length of the editor window.
# Buffer to edit (containing default value).
# Size of the buffer.
# Notify the line editor about keypress.
proc editkey*(e: ptr Tedit; c: cint)
# Editor context to use (see aa_createedit)
# Key pressed
#
# put pixel to emulated framebuffer
#
proc putpixel*(c: ptr Tcontext; x: cint; y: cint; color: cint)
# Specifies the AA-lib context to operate on.
# X coordinate.
# Y coordinate.
# Palette index or brightness value (0..255)
# insert the given driver on beggining of the list of recommended keyboard drivers.
proc recommendhikbd*(name: cstring)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# Add the given driver to the end of list of keyboard recommended drivers.
proc recommendlowkbd*(name: cstring)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# insert the given driver on beggining of the list of recommended mouse drivers.
proc recommendhimouse*(name: cstring)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# Add the given driver to the end of list of mouse recommended drivers.
proc recommendlowmouse*(name: cstring)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# insert the given driver on beggining of the list of recommended display drivers.
proc recommendhidisplay*(name: cstring)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# Add the given driver to the end of list of display recommended drivers.
proc recommendlowdisplay*(name: cstring)
# Name of the driver (ought to match the "shortname"
# field of the driver definition structure).
# This macro implementations are proved for faster compilation.
#when defined(__GNUC__):
# The putpixel macro can be implemented reliably only using GNU-C extension.
##define aa_putpixel(c,x,y,color) ({aa_context *___aa_context=(c);
#((___aa_context)->imagebuffer[(x)+(y)*(aa_imgwidth(___aa_context))]=(color)); 0;})
# #define aa_setpalette(palette,index,r,g,b) ((palette)[index]=(((r)*30+(g)*59+(b)*11)>>8))
##define aa_recommendhikbd(t) aa_recommendhi(&aa_kbdrecommended,t);
##define aa_recommendhimouse(t) aa_recommendhi(&aa_mouserecommended,t);
##define aa_recommendhidisplay(t) aa_recommendhi(&aa_displayrecommended,t);
##define aa_recommendlowkbd(t) aa_recommendlow(&aa_kbdrecommended,t);
##define aa_recommendlowmouse(t) aa_recommendlow(&aa_mouserecommended,t);
##define aa_recommendlowdisplay(t) aa_recommendlow(&aa_displayrecommended,t);
##define aa_scrwidth(a) ((a)->params.width)
##define aa_scrheight(a) ((a)->params.height)
##define aa_mmwidth(a) ((a)->params.mmwidth)
##define aa_mmheight(a) ((a)->params.mmheight)
##define aa_imgwidth(a) ((a)->imgwidth)
##define aa_imgheight(a) ((a)->imgheight)
##define aa_image(c) ((c)->imagebuffer)
##define aa_text(c) ((c)->textbuffer)
##define aa_attrs(c) ((c)->attrbuffer)
{.pop.}
{.pop.}
when isMainModule:
const nimlogo = "http://nimrod-lang.org/assets/images/logo.png"
var hwparams: THardwareParams
hwparams.width = 80
hwparams.height = 20
let ctx = autoinit(hwparams.addr)
ctx.close