Provided by: afterstep-data_2.2.12-18_all 
NAME
asimagexml - XML schema to be used for scripting image manipulation by AfterStep and
ascompose libAfterImage/asimagexml
NAMEascompose
is a tool to compose image(s) and display/save it based on supplied XML input file.
DESCRIPTION
ascompose reads supplied XML data, and manipulates image accordingly. It could transform
images from files of any supported file format, draw gradients, render antialiased
texturized text, perform superimposition of arbitrary number of images, and save images
into files of any of supported output file formats.
At any point, the result of any operation could be assigned a name, and later on
referenced under this name.
At any point during the script processing, result of any operation could be saved into a
file of any supported file types.
Internal image format is 32bit ARGB with 8bit per channel.
Last image referenced, will be displayed in X window, unless -n option is specified. If -r
option is specified, then this image will be displayed in root window of X display,
effectively setting a background for a desktop. If -o option is specified, this image will
also be saved into the file or requested type.
TAGS
Here is the list and description of possible XML tags to use in the script :
img - load image from the file.
recall - recall previously loaded/generated image by its name.
text - render text string into new image.
save - save an image into the file.
bevel - draw solid bevel frame around the image.
gradient - render multipoint gradient.
mirror - create mirror copy of an image.
blur - perform gaussian blur on an image.
rotate - rotate/flip image in 90 degree increments.
scale - scale an image to arbitrary size.
slice - enlarge image to arbitrary size leaving corners unchanged.
crop - crop an image to arbitrary size.
tile - tile an image to arbitrary size.
hsv - adjust Hue, Saturation and Value of an image.
pad - pad image with solid color from either or all sides.
solid - generate new image of requested size, filled with solid
color.
composite - superimpose arbitrary number of images using one of 15
available methods.
if - conditional processing based on value of the variables
set - sets value of the variable
printf - formatted printing of the value of the variable
Each tag generates new image as the result of the transformation - existing images are
never modified and could be reused as many times as needed. See below for description of
each tag.
Whenever numerical values are involved, the basic math ops (add, subtract, multiply,
divide), unary minus, and parentheses are supported.
Operator precedence is NOT supported. Percentages are allowed, and apply to either width
or height of the appropriate image (usually the refid image).
Also, variables of the form $image.width and $image.height are supported. $image.width is
the width of the image with refid "image", and $image.height is the height of the same
image. The special $xroot.width and $xroot.height values are defined by the the X root
window, if there is one. This allows images to be scaled to the desktop size: <scale
width="$xroot.width" height="$xroot.height">.
Each tag is only allowed to return ONE image.
libAfterImage/asimagexml/text
NAMEtext
- render text string into new image, using specific font, size and texture.
SYNOPSIS
<text id="new_id" font="font" point="size" fgcolor="color"
bgcolor="color" fgimage="image_id" bgimage="image_id"
spacing="points" type="3dtype">My Text Here</text>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
font Optional. Default is "fixed". Font to use for text.
point Optional. Default is 12. Size of text in points.
fgcolor
Optional. No default. The text will be drawn in this color.
bgcolor
Optional. No default. The area behind the text will be drawn in this color.
fgimage
Optional. No default. The text will be textured by this image.
bgimage
Optional. No default. The area behind the text will be filled with this image.
spacing
Optional. Default 0. Extra pixels to place between each glyph.
type Optional. Default 0. Valid values are from 0 to 7 and each represeend different 3d
type.
NOTES
<text> without bgcolor, fgcolor, fgimage, or bgimage will NOT produce visible output by
itself. See EXAMPLES below.
libAfterImage/asimagexml/composite
NAMEcomposite
- superimpose arbitrary number of images on top of each other.
SYNOPSIS
<composite id="new_id" op="op_desc"
keep-transparency="0|1" merge="0|1">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
op Optional. Default is "alphablend". The compositing operation. Valid values are the
standard AS blending ops: add, alphablend, allanon, colorize, darken, diff,
dissipate, hue, lighten, overlay, saturate, screen, sub, tint, value.
merge Optional. Default is "expand". Valid values are "clip" and "expand". Determines
whether final image will be expanded to the maximum size of the layers, or clipped
to the bottom layer.
keep-transparency
Optional. Default is "0". Valid values are "0" and "1". If set to "1", the
transparency of the bottom layer will be kept for the final image.
NOTES
All images surrounded by this tag will be composited with the given op.
ATTRIBUTES
All tags surrounded by this tag may have some of the common attributes
in addition to their normal ones. Under no circumstances is there a
conflict with the normal child attributes:
crefid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "x" and "y" will be derived from the width and height
of the crefid image.
x Optional. Default is 0. Pixel coordinate of left edge.
y Optional. Default is 0. Pixel coordinate of top edge.
align Optional. Alternative to x - allowed values are right, center and left.
valign Optional. Alternative to y - allowed values are top, middle and bottom.
clip_x Optional. Default is 0. X Offset on infinite surface tiled with this image, from
which to cut portion of an image to be used in composition.
clip_y Optional. Default is 0. Y Offset on infinite surface tiled with this image, from
which to cut portion of an image to be used in composition.
clip_width
Optional. Default is image width. Tile image to this width prior to
superimposition.
clip_height
Optional. Default is image height. Tile image to this height prior to
superimposition.
tile Optional. Default is 0. If set will cause image to be tiled across entire
composition, unless overridden by clip_width or clip_height.
tint Optional. Additionally tint an image to specified color. Tinting can both lighten
and darken an image. Tinting color 0 or #7f7f7f7f yields no tinting. Tinting can be
performed on any channel, including alpha channel.
SEE ALSO
libAfterImage
libAfterImage/asimagexml/img
NAMEimg
- load image from the file.
SYNOPSIS
<img id="new_img_id" src="filename"/>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
src Required. The filename (NOT URL) of the image file to load.
NOTES
The special image src "xroot:" will import the background image of the root X window, if
any. No attempt will be made to offset this image to fit the location of the resulting
window, if one is displayed.
libAfterImage/asimagexml/recall
NAMErecall
- recall previously generated and named image by its id.
SYNOPSIS
<recall id="new_id" srcid="image_id" default_src="filename"/>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
srcid Required. An image ID defined with the "id" parameter for any previously created
image. libAfterImage/asimagexml/release
NAMErelease
- release (destroy if possible) previously generated and named image by its id.
SYNOPSIS
<release srcid="image_id"/>
ATTRIBUTES
srcid Required. An image ID defined with the "id" parameter for any previously created
image. libAfterImage/asimagexml/color
NAMEcolor
- defines symbolic name for a color and set of variables.
SYNOPSIS
<color name="sym_name" domain="var_domain" argb="colorvalue"/>
ATTRIBUTES
name Symbolic name for the color value, to be used to refer to that color.
argb 8 characters hex definition of the color or other symbolic color name.
domain string to be used to prepend names of defined variables.
NOTES
In addition to defining symbolic name for the color this tag will define 7 other variables
: domain.sym_name.red, domain.sym_name.green,
domain.sym_name.blue, domain.sym_name.alpha,
domain.sym_name.hue, domain.sym_name.saturation,
domain.sym_name.value
libAfterImage/asimagexml/color2alpha
NAMEcolor2alpha
- set alpha channel based on color closeness to specified color
SYNOPSIS
<color2alpha id="new_id" ref_id="other_imag" width="pixels" height="pixels"
clip_x="clip_x" clip_y="clip_y"
color="color">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Required. The image will be scaled to this width.
height Required. The image will be scaled to this height.
clip_x Optional. Offset into original image.
clip_y Optional. Offset into original image.
color Required. Color to match against.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded. If you want to keep image proportions while resizing-use "proportional"
instead of specific size for particular dimension.
libAfterImage/asimagexml/printf
NAMEprintf
- prints variable value to standard output.
SYNOPSIS
<printf format="format_string" var="variable_name" val="expression"/>
ATTRIBUTES
format_string
Standard C format string with exactly 1 placeholder.
var Name of the variable, which value will be printed.
val math expression to be printed.
NOTESlibAfterImage/asimagexml/set
NAMEset
- declares variable, assigning it a numeric value of expression.
SYNOPSIS
<set var="variable_name" domain="var_domain" val="expression"/>
ATTRIBUTES
var Name of the variable, which value will be set.
val math expression to be evaluated.
domain (optional) variable's domain to be prepended to its name using format
var_domain.variable_name libAfterImage/asimagexml/if
NAMEif
- evaluates logical expression and if result evaluates to not true(or false if <unless>
tag is used ), handles tags within.
SYNOPSIS
<if val1="expression" [op="gt|lt|ge|le|eq|ne" val2="expression"]/>
[<then>...</then><else>...</else>] </if> <unless val1="expression"
[op="gt|lt|ge|le|eq|ne" val2="expression"]/>
ATTRIBUTES
val1 math expression to be evaluated.
val2 math expression to be evaluated.
op (optional) comparison op to be applied to values
EXAMPLE
<if val1="$ascs.Base.value" val2="50" op="gt"><then>...</then><else>...</else></if>
libAfterImage/asimagexml/gradient
NAMEgradient
- render multipoint gradient.
SYNOPSIS
<gradient id="new_id" angle="degrees"
refid="refid" width="pixels" height="pixels"
colors ="color1 color2 color3 [...]"
offsets="fraction1 fraction2 fraction3 [...]"/>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Optional. The result will have this width.
height Optional. The result will have this height.
colors Required. Whitespace-separated list of colors. At least two colors are required.
Each color in this list will be visited in turn, at the intervals given by the
offsets attribute.
offsets
Optional. Whitespace-separated list of floating point values ranging from 0.0 to
1.0. The colors from the colors attribute are given these offsets, and the final
gradient is rendered from the combination of the two. If both colors and offsets
are given but the number of colors and offsets do not match, the minimum of the two
will be used, and the other will be truncated to match. If offsets are not given, a
smooth stepping from 0.0 to 1.0 will be used.
angle Optional. Given in degrees. Default is 0. This is the direction of the gradient.
Currently the only supported values are 0, 45, 90, 135, 180, 225, 270, 315. 0 means
left to right, 90 means top to bottom, etc. libAfterImage/asimagexml/solid
NAMEsolid
- generate image of specified size and fill it with solid color.
SYNOPSIS
<solid id="new_id" color="color" opacity="opacity"
width="pixels" height="pixels"
refid="refid" width="pixels" height="pixels"/>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
width Optional. The result will have this width.
height Optional. The result will have this height.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
color Optional. Default is "#ffffffff". An image will be created and filled with this
color.
width Required. The image will have this width.
height Required. The image will have this height.
opacity
Optional. Default is 100. Values from 0 to 100 represent the opacity of resulting
image with 100 being completely opaque. Effectively overrides alpha component of
the color setting. libAfterImage/asimagexml/save
NAMEsave
- write generated/loaded image into the file of one of the supported types
SYNOPSIS
<save id="new_id" dst="filename" format="format" compress="value"
opacity="value" replace="0|1" delay="mlsecs">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
dst Optional. Name of file image will be saved to. If omitted image will be dumped into
stdout - useful for CGI apps.
format Optional. Output format of saved image. Defaults to the extension of the "dst"
parameter. Valid values are the standard AS image file formats: xpm, jpg, png, gif,
tiff.
compress
Optional. Compression level if supported by output file format. Valid values are in
range of 0 - 100 and any of "deflate", "jpeg", "ojpeg", "packbits" for TIFF files.
Note that JPEG and GIF will produce images with deteriorated quality when compress
is greater then 0. For JPEG default is 25, for PNG default is 6 and for GIF it is
0.
opacity
Optional. Level below which pixel is considered to be transparent, while saving
image as XPM or GIF. Valid values are in range 0-255. Default is 127.
replace
Optional. Causes ascompose to delete file if the file with the same name already
exists. Valid values are 0 and 1. Default is 1 - files are deleted before being
saved. Disable this to get multimage animated gifs.
delay Optional. Delay to be stored in GIF image. This could be used to create animated
gifs. Note that you have to set replace="0" and then write several images into the
GIF file with the same name.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/background
NAMEbackground
- set image's background color.
SYNOPSIS
<background id="new_id" color="color">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
color Required. Color to be used for background - fills all the spaces in image with
missing pixels.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/blur
NAMEblur
- perform a gaussian blurr on an image.
SYNOPSIS
<blur id="new_id" horz="radius" vert="radius" channels="argb">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
horz Optional. Horizontal radius of the blur in pixels.
vert Optional. Vertical radius of the blur in pixels.
channels
Optional. Applys blur only on listed color channels: a - alpha, r - red, g - green,
b - blue
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/bevel
NAMEbevel
- draws solid bevel frame around the image.
SYNOPSIS
<bevel id="new_id" colors="color1 color2"
width="pixels" height="pixels" refid="refid"
border="left top right bottom" solid=0|1 outline=0|1>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
colors Optional. Whitespace-separated list of colors. Exactly two colors are required.
Default is "#ffdddddd #ff555555". The first color is the color of the upper and
left edges, and the second is the color of the lower and right edges.
borders
Optional. Whitespace-separated list of integer values. Default is "10 10 10 10".
The values represent the offsets toward the center of the image of each border:
left, top, right, bottom.
solid Optional - default is 1. If set to 0 will draw bevel gradually fading into the
image.
outline
Optional - default is 0. If set to 1 will draw bevel around the image vs. inside
the image.
width Optional. The result will have this width.
height Optional. The result will have this height.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/mirror
NAMEmirror
- create new image as mirror copy of an old one.
SYNOPSIS
<mirror id="new_id" dir="direction"
width="pixels" height="pixels" refid="refid">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
dir Required. Possible values are "vertical" and "horizontal". The image will be
flipped over the x-axis if dir is vertical, and flipped over the y-axis if dir is
horizontal.
width Optional. The result will have this width.
height Optional. The result will have this height.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/rotate
NAMErotate
- rotate an image in 90 degree increments (flip).
SYNOPSIS
<rotate id="new_id" angle="degrees"
width="pixels" height="pixels" refid="refid"> * ATTRIBUTES id Optional.
Image will be given this name for future reference. angle Required. Given in degrees.
Possible values are currently
"90", "180", and "270". Rotates the image through the given
angle. width Optional. The result will have this width. height Optional.
The result will have this height. refid Optional. An image ID defined with the "id"
parameter for
any previously created image. If set, percentages in "width"
and "height" will be derived from the width and height of the
refid image.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/scale
NAMEscale
- scale image to arbitrary size
SYNOPSIS
<scale id="new_id" refid="other_imag" src_x="pixels" src_y="pixels"
src_width="pixels" src_height="pixels"
width="pixels" height="pixels">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Required. The image will be scaled to this width.
height Required. The image will be scaled to this height.
src_x Optional. Default is 0. X Offset on infinite surface tiled with this image, from
which to cut portion of an image to be used in scaling.
src_y Optional. Default is 0. Y Offset on infinite surface tiled with this image, from
which to cut portion of an image to be used in scaling.
src_width
Optional. Default is image width. Tile image to this width prior to scaling.
src_height
Optional. Default is image height. Tile image to this height prior to scaling.
* NOTES
This tag applies to the first image contained within the tag. Any
further
images will be discarded.
If you want to keep image proportions while scaling - use "proportional"
instead
of specific size for particular dimension. libAfterImage/asimagexml/slice
NAMEslice
- slice image to arbitrary size leaving corners unchanged
SYNOPSIS
<slice id="new_id" ref_id="other_imag" width="pixels" height="pixels"
x_start="slice_x_start" x_end="slice_x_end"
y_start="slice_y_start" y_end="slice_y_end"
scale="0|1">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Required. The image will be scaled to this width.
height Required. The image will be scaled to this height.
x_start
Optional. Position at which vertical image slicing begins. Corresponds to the right
side of the left corners.
x_end Optional. Position at which vertical image slicing end. Corresponds to the left
side of the right corners.
y_start
Optional. Position at which horisontal image slicing begins. Corresponds to the
bottom side of the top corners.
y_end Optional. Position at which horisontal image slicing end. Corresponds to the top
side of the bottom corners.
scale Optional. If set to 1 will cause middle portion of the image to be scaled instead
of tiled.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded. Contents of the image between x_start and x_end will be tiled horizontally.
Contents of the image between y_start and y_end will be tiled vertically. This is useful
to get background images to fit the size of the text or a widget, while preserving its
borders undistorted, which is the usuall result of simple scaling. If you want to keep
image proportions while resizing-use "proportional" instead of specific size for
particular dimension.
libAfterImage/asimagexml/pixelize
NAMEpixelize
- pixelize image using arbitrary pixel size
SYNOPSIS
<pixelize id="new_id" ref_id="other_imag" width="pixels" height="pixels"
clip_x="clip_x" clip_y="clip_y"
pixel_width="pixel_width" pixel_height="pixel_height">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Required. The image will be scaled to this width.
height Required. The image will be scaled to this height.
clip_x Optional. Offset into original image.
clip_y Optional. Offset into original image.
pixel_width
Required. Horizontal pixelization step;
pixel_height
Required. Vertical pixelization step;
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded. If you want to keep image proportions while resizing-use "proportional"
instead of specific size for particular dimension.
libAfterImage/asimagexml/crop
NAMEcrop
- crop image to arbitrary area within it.
SYNOPSIS
<crop id="new_id" refid="other_image" srcx="pixels" srcy="pixels"
width="pixels" height="pixels" tint="color">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
srcx Optional. Default is "0". Skip this many pixels from the left.
srcy Optional. Default is "0". Skip this many pixels from the top.
width Optional. Default is "100%". Keep this many pixels wide.
height Optional. Default is "100%". Keep this many pixels tall.
tint Optional. Additionally tint an image to specified color. Tinting can both lighten
and darken an image. Tinting color 0 or #7f7f7f7f yields no tinting. Tinting can be
performed on any channel, including alpha channel.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/tile
NAMEtile
- tile an image to specified area.
SYNOPSIS
<tile id="new_id" refid="other_image" width="pixels" height="pixels"
x_origin="pixels" y_origin="pixels" tint="color" complement=0|1>
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Optional. Default is "100%". The image will be tiled to this width.
height Optional. Default is "100%". The image will be tiled to this height.
x_origin
Optional. Horizontal position on infinite surface, covered with tiles of the image,
from which to cut out resulting image.
y_origin
Optional. Vertical position on infinite surface, covered with tiles of the image,
from which to cut out resulting image.
tint Optional. Additionally tint an image to specified color. Tinting can both lighten
and darken an image. Tinting color 0 or #7f7f7f7f yields no tinting. Tinting can be
performed on any channel, including alpha channel.
complement
Optional. Will use color that is the complement to tint color for the tinting, if
set to 1. Default is 0.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/hsv
NAMEhsv
- adjust Hue, Saturation and/or Value of an image and optionally tile an image to
arbitrary area.
SYNOPSIS
<hsv id="new_id" refid="other_image"
x_origin="pixels" y_origin="pixels" width="pixels" height="pixels"
affected_hue="degrees|color" affected_radius="degrees"
hue_offset="degrees" saturation_offset="value"
value_offset="value">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
width Optional. Default is "100%". The image will be tiled to this width.
height Optional. Default is "100%". The image will be tiled to this height.
x_origin
Optional. Horizontal position on infinite surface, covered with tiles of the image,
from which to cut out resulting image.
y_origin
Optional. Vertical position on infinite surface, covered with tiles of the image,
from which to cut out resulting image.
affected_hue
Optional. Limits effects to the renage of hues around this hue. If numeric value is
specified - it is treated as degrees on 360 degree circle, with : red = 0, yellow =
60, green = 120, cyan = 180, blue = 240, magenta = 300. If colorname or value
preceded with # is specified here - it will be treated as RGB color and converted
into hue automagically.
affected_radius
Optional. Value in degrees to be used in order to calculate the range of affected
hues. Range is determined by subtracting and adding this value from/to
affected_hue.
hue_offset
Optional. Value by which to adjust the hue.
saturation_offset
Optional. Value by which to adjust the saturation.
value_offset
Optional. Value by which to adjust the value.
NOTES
One of the Offsets must be not 0, in order for operation to be performed.
This tag applies to the first image contained within the tag. Any further images will be
discarded.
libAfterImage/asimagexml/pad
NAMEpad
- pad an image with solid color rectangles.
SYNOPSIS
<pad id="new_id" left="pixels" top="pixels"
right="pixels" bottom="pixels" color="color"
refid="refid" width="pixels" height="pixels">
ATTRIBUTES
id Optional. Image will be given this name for future reference.
width Optional. The result will have this width.
height Optional. The result will have this height.
refid Optional. An image ID defined with the "id" parameter for any previously created
image. If set, percentages in "width" and "height" will be derived from the width
and height of the refid image.
left Optional. Size to add to the left of the image.
top Optional. Size to add to the top of the image.
right Optional. Size to add to the right of the image.
bottom Optional. Size to add to the bottom of the image.
color Optional. Color value to fill added areas with. It could be transparent of course.
Default is #FF000000 - totally black.
NOTES
This tag applies to the first image contained within the tag. Any further images will be
discarded.