Provided by: libafterimage-dev_2.2.12-6_amd64 
NAME
ximage - functionality for displaying ASImages on X display libAfterImage/ximage.h
NAMEximage
- Defines conversion to and from XImages and Pixmaps.
DESCRIPTION
ximage2asimage() - convert XImage structure into ASImage pixmap2asimage() - convert
X11 pixmap into ASImage asimage2ximage() - convert ASImage into XImage
asimage2mask_ximage() - convert alpha channel of ASImage into XImage asimage2pixmap() -
convert ASImage into Pixmap ( possibly using
precreated XImage ) asimage2mask() - convert alpha channel of
ASImage into 1 bit
mask Pixmap.
SEE ALSO
Other libAfterImage modules :
ascmap.h asfont.h asimage.h asvisual.h blender.h export.h
import.h transform.h ximage.h
AUTHOR
Sasha Vasko <sasha at aftercode dot net>
libAfterImage/picture_ximage2asimage()
NAMEpicture_ximage2asimage()
SYNOPSIS
ASImage *picture_ximage2asimage ( struct ASVisual *asv,
XImage * xim, XImage *alpha_xim,
unsigned int compression );
INPUTS
asv - pointer to valid ASVisual structure
xim - source XImage
alpha_xim
- source XImage for Alpha channel
compression
- degree of compression of resulting ASImage.
RETURN VALUE
pointer to newly allocated ASImage, containing encoded data, on success. NULL on failure.
DESCRIPTION
picture_ximage2asimage will attempt to create new ASImage with the same dimensions as
supplied XImage. If both XImages are supplied - they must have same dimentions. XImage
will be decoded based on supplied ASVisual, and resulting scanlines will be encoded into
ASImage.
libAfterImage/ximage2asimage()
NAMEximage2asimage()
- same as picture_ximage2asimage with alpha_ximage set to NULL. Supplied for compatibility
with older versions and for convinience.
SYNOPSIS
ASImage *ximage2asimage ( struct ASVisual *asv, XImage * xim,
unsigned int compression );
INPUTS
asv - pointer to valid ASVisual structure
xim - source XImage
compression
- degree of compression of resulting ASImage.
RETURN VALUE
pointer to newly allocated ASImage, containing encoded data, on success. NULL on failure.
DESCRIPTIONlibAfterImage/pixmap2asimage()
NAMEpixmap2asimage()
SYNOPSIS
ASImage *pixmap2ximage( ASVisual *asv, Pixmap p, int x, int y,
unsigned int width, unsigned int height,
unsigned long plane_mask,
unsigned int compression);
INPUTS
asv - pointer to valid ASVisual structure
p - source Pixmap
x, y,
width, height- rectangle on Pixmap to be encoded into ASImage.
plane_mask
- limits color planes to be copied from Pixmap.
keep_cache
- indicates if we should keep XImage, used to copy image data from the X server,
and attached it to ximage member of resulting ASImage.
compression
- degree of compression of resulting ASImage.
RETURN VALUE
pointer to newly allocated ASImage, containing data in XImage format, on success. NULL on
failure.
DESCRIPTION
pixmap2ximage will obtain XImage of the requested area of the X Pixmap, and it will attach
it to newly created ASImage using alt.ximage member. After that newly created ASImage
could be used in any transformations.
libAfterImage/pixmap2asimage()
NAMEpixmap2asimage()
SYNOPSIS
ASImage *pixmap2asimage ( struct ASVisual *asv, Pixmap p,
int x, int y,
unsigned int width,
unsigned int height,
unsigned long plane_mask,
Bool keep_cache,
unsigned int compression );
INPUTS
asv - pointer to valid ASVisual structure
p - source Pixmap
x, y,
width, height- rectangle on Pixmap to be encoded into ASImage.
plane_mask
- limits color planes to be copied from Pixmap.
keep_cache
- indicates if we should keep XImage, used to copy image data from the X server,
and attached it to ximage member of resulting ASImage.
compression
- degree of compression of resulting ASImage.
RETURN VALUE
pointer to newly allocated ASImage, containing encoded data, on success. NULL on failure.
DESCRIPTION
same as picture2asimage() with alpha pixmap set to None. Supplied for compatibility and
convinience.
libAfterImage/picture2asimage()
NAMEpicture2asimage()
SYNOPSIS
ASImage *picture2asimage (struct ASVisual *asv,
Pixmap rgb, Pixmap a,
int x, int y,
unsigned int width,
unsigned int height,
unsigned long plane_mask,
Bool keep_cache,
unsigned int compression );
INPUTS
asv - pointer to valid ASVisual structure
rgb - source Pixmap for red, green and blue channels
a - source Pixmap for the alpha channel
x, y,
width, height- rectangle on Pixmap to be encoded into ASImage.
plane_mask
- limits color planes to be copied from Pixmap.
keep_cache
- indicates if we should keep XImage, used to copy image data from the X server,
and attached it to ximage member of resulting ASImage.
compression
- degree of compression of resulting ASImage.
RETURN VALUE
pointer to newly allocated ASImage, containing encoded data, on success. NULL on failure.
DESCRIPTION
picture2asimage will obtain XImage of the requested area of the X Pixmap, If alpha channel
pixmap is supplied - it will be used to encode ASImage's alpha channel. Alpha channel
pixmap must be either 8 or 1 bit deep, and it must have the same dimentions as main
Pixmap.
libAfterImage/asimage2ximage()
NAMEasimage2ximage()
SYNOPSIS
XImage *asimage2ximage (struct ASVisual *asv, ASImage *im);
INPUTS
asv - pointer to valid ASVisual structure
im - source ASImage
RETURN VALUE
On success returns newly created and encoded XImage of the same colordepth as the supplied
ASVisual. NULL on failure.
DESCRIPTION
asimage2ximage() creates new XImage of the exact same size as supplied ASImage, and depth
of supplied ASVisual. REd, Green and Blue channels of ASImage then gets decoded, and
encoded into XImage. Missing scanlines get filled with black color.
NOTES
Returned pointer to XImage will also be stored in im->alt.ximage, and It will be destroyed
when XImage is destroyed, or reused in any subsequent calls to asimage2ximage(). If any
other behaviour is desired - make sure you set im->alt.ximage to NULL, to dissociate
XImage object from ASImage.
SEE ALSO
create_visual_ximage()
libAfterImage/asimage2alpha_ximage()
NAMEasimage2alpha_ximage()
SYNOPSIS
XImage *asimage2alpha_ximage (struct ASVisual *asv,
ASImage *im, Bool bitmap);
INPUTS
asv - pointer to valid ASVisual structure
im - source ASImage
bitmap - if True resulting XImage will have depth of 1 bit - traditional X mask; otherwise
it will have depth of 8 (useful for XFree86 RENDER extension)
RETURN VALUE
On success returns newly created and encoded XImage of the depth 1 or 8. NULL on failure.
DESCRIPTION
asimage2alpha_ximage() creates new XImage of the exact same size as supplied ASImage, and
depth 1 or 8. Alpha channels of ASImage then gets decoded, and encoded into XImage. In
case requested depth is 1 then alpha channel is interpreted like so: 127 or greater is
encoded as 1, otherwise as 0. Missing scanlines get filled with 1s as they signify
absence of mask.
NOTES
Returned pointer to XImage will also be stored in im->alt.mask_ximage, and It will be
destroyed when XImage is destroyed, or reused in any subsequent calls to
asimage2mask_ximage(). If any other behaviour is desired - make sure you set
im->alt.mask_ximage to NULL, to dissociate XImage object from ASImage.
libAfterImage/asimage2mask_ximage()
NAMEasimage2mask_ximage()
- same as asimage2alpha_ximage(). Supplied for convinience and compatibility with older
versions.
SYNOPSIS
XImage *asimage2mask_ximage (struct ASVisual *asv, ASImage *im);
INPUTS
asv - pointer to valid ASVisual structure
im - source ASImage
RETURN VALUE
On success returns newly created and encoded XImage of the depth 1. NULL on failure.
libAfterImage/asimage2pixmap()
NAMEasimage2pixmap()
SYNOPSIS
Bool asimage2drawable( struct ASVisual *asv, Drawable d, ASImage *im,
GC gc,
int src_x, int src_y, int dest_x, int dest_y,
unsigned int width, unsigned int height,
Bool use_cached);
INPUTS
asv - pointer to valid ASVisual structure
d - destination drawable - Pixmap or Window
im - source ASImage
gc - precreated GC to use for XImage transfer. If NULL, asimage2drawable() will use
DefaultGC.
src_x - Specifies the offset in X from the left edge of the image defined by the ASImage
structure.
src_y - Specifies the offset in Y from the top edge of the image defined by the ASImage
structure.
dest_x,dest_y-
Specify the x and y coordinates, which are relative to the origin of the drawable
and are the coordinates of the subimage.
width,height
- Specify the width and height of the subimage, which define the dimensions of the
rectangle.
use_cached
- If True will make asimage2pixmap() to use XImage attached to ASImage, instead of
creating new one. Only works if ASImage->ximage data member is not NULL.
RETURN VALUE
On success returns True.
DESCRIPTION
asimage2drawable() creates will copy portion of ASImage onto the X Drawable. It checks if
it needs to encode XImage from ASImage data, and calls asimage2ximage() if yes, it has to.
It then supplied gc or DefaultGC of the screen to transfer XImage to the server. Missing
scanlines get filled with black color.
SEE ALSO
asimage2ximage() asimage2pixmap() create_visual_pixmap()
libAfterImage/asimage2pixmap()
NAMEasimage2pixmap()
SYNOPSIS
Pixmap asimage2pixmap ( struct ASVisual *asv, Window root,
ASImage *im, GC gc, Bool use_cached);
INPUTS
asv - pointer to valid ASVisual structure
root - root window of destination screen
im - source ASImage
gc - precreated GC to use for XImage transfer. If NULL, asimage2pixmap() will use
DefaultGC.
use_cached
- If True will make asimage2pixmap() to use XImage attached to ASImage, instead of
creating new one. Only works if ASImage->ximage data member is not NULL.
RETURN VALUE
On success returns newly pixmap of the same colordepth as ASVisual. None on failure.
DESCRIPTION
asimage2pixmap() creates new pixmap of exactly same size as supplied ASImage. It then
calls asimage2drawable to copy entire content of the ASImage onto that created pixmap.
EXAMPLE
asview.c: ASView.5
SEE ALSO
asimage2ximage() asimage2drawable() create_visual_pixmap()
libAfterImage/asimage2mask()
NAMEasimage2mask()
SYNOPSIS
Pixmap asimage2mask ( struct ASVisual *asv, Window root,
ASImage *im, GC gc, Bool use_cached); asv - pointer to
valid ASVisual structure root - root window of destination screen im -
source ASImage gc - precreated GC for 1 bit deep drawables to use for
XImage transfer. If NULL, asimage2mask() will create one. use_cached - If
True will make asimage2mask() to use mask XImage
attached to ASImage, instead of creating new one. Only
works if ASImage->alt.mask_ximage data member is not NULL.
RETURN VALUE
On success returns newly created pixmap of the colordepth 1. None on failure.
DESCRIPTION
asimage2mask() creates new pixmap of exactly same size as supplied ASImage. It then calls
asimage2mask_ximage(). It then uses supplied gc, or creates new gc, to transfer XImage to
the server and put it on Pixmap. Missing scanlines get filled with 1s.
SEE ALSO
asimage2mask_ximage()