asimagexml(1) AfterStep X11 window manager asimagexml(1)
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 - formated 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.
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.
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
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.
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
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 dimention.
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/setNAMEset - 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>
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.
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.
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.
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.
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.
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.
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 dimention.
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
dimention.
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 dimention.
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 yeilds 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.
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.
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
substracting 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.
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.
3rd Berkeley Distribution AfterStep v.2.2.12 asimagexml(1)
