Storing file contents in memory. More...

#include <stddef.h>
#include <stdbool.h>

Classes
struct	xorn_string
	Sequence of bytes. More...

struct	xorn_double2d
	Pair of double values indicating a coordinate or offset. More...

struct	xorn_pointer
	Arbitrary reference-counted pointer. More...

struct	xornsch_line_attr
	Schematic line style. More...

struct	xornsch_fill_attr
	Schematic fill style. More...

struct	xornsch_arc
	Schematic arc. More...

struct	xornsch_box
	Schematic box. More...

struct	xornsch_circle
	Schematic circle. More...

struct	xornsch_component
	Schematic component. More...

struct	xornsch_line
	Schematic line. More...

struct	xornsch_net
	Schematic net segment, bus segment, or pin. More...

struct	xornsch_path
	Schematic path. More...

struct	xornsch_picture
	Schematic picture. More...

struct	xornsch_text
	Schematic text or attribute. More...

Typedefs
typedef struct xorn_revision *	xorn_revision_t
	Opaque type representing the contents of a file. More...

typedef struct xorn_object *	xorn_object_t
	Opaque type representing the identity of an object. More...

typedef struct xorn_selection *	xorn_selection_t
	Opaque type representing the identity of a set of objects. More...

Enumerations
enum	xorn_obtype_t { xorn_obtype_none, xornsch_obtype_arc, xornsch_obtype_box, xornsch_obtype_circle, xornsch_obtype_component, xornsch_obtype_line, xornsch_obtype_net, xornsch_obtype_path, xornsch_obtype_picture, xornsch_obtype_text }
	Object types, each corresponding to a data structure. More...

enum	xorn_attst_t { xorn_attst_na, xorn_attst_consistent, xorn_attst_inconsistent }
	Attribute status across multiple objects. More...

Functions
xorn_revision_t	xorn_new_revision (xorn_revision_t rev)
	Create a new revision, either from scratch or by copying an existing one. More...

bool	xorn_revision_is_transient (xorn_revision_t rev)
	Return whether a revision can be changed. More...

void	xorn_finalize_revision (xorn_revision_t rev)
	Prevent further changes to a revision. More...

void	xorn_free_revision (xorn_revision_t rev)
	Free the memory associated with a revision. More...

bool	xorn_object_exists_in_revision (xorn_revision_t rev, xorn_object_t ob)
	Return whether an object exists in a revision. More...

xorn_obtype_t	xorn_get_object_type (xorn_revision_t rev, xorn_object_t ob)
	Get the type of an object in a given revision. More...

const void *	xorn_get_object_data (xorn_revision_t rev, xorn_object_t ob, xorn_obtype_t type)
	Get a pointer to an object's data in a given revision. More...

int	xorn_get_object_location (xorn_revision_t rev, xorn_object_t ob, xorn_object_t attached_to_return, unsigned int position_return)
	Get the location of an object in the object structure. More...

int	xorn_get_objects (xorn_revision_t rev, xorn_object_t *objects_return, size_t count_return)
	Return a list of all objects in a revision. More...

int	xorn_get_objects_attached_to (xorn_revision_t rev, xorn_object_t ob, xorn_object_t *objects_return, size_t count_return)
	Return a list of objects in a revision which are attached to a certain object. More...

int	xorn_get_selected_objects (xorn_revision_t rev, xorn_selection_t sel, xorn_object_t *objects_return, size_t count_return)
	Return a list of objects which are in a revision as well as in a selection. More...

int	xorn_get_added_objects (xorn_revision_t from_rev, xorn_revision_t to_rev, xorn_object_t *objects_return, size_t count_return)
	Return a list of objects which are in a revision but not in another. More...

int	xorn_get_removed_objects (xorn_revision_t from_rev, xorn_revision_t to_rev, xorn_object_t *objects_return, size_t count_return)
	Return a list of objects which are in a revision but not in another. More...

int	xorn_get_modified_objects (xorn_revision_t from_rev, xorn_revision_t to_rev, xorn_object_t *objects_return, size_t count_return)
	Return a list of objects which exist in two revisions but have different type or data. More...

xorn_selection_t	xorn_select_none ()
	Create an empty selection. More...

xorn_selection_t	xorn_select_object (xorn_object_t ob)
	Create a selection containing a single object. More...

xorn_selection_t	xorn_select_attached_to (xorn_revision_t rev, xorn_object_t ob)
	Create a selection containing all objects in a revision attached to a given object. More...

xorn_selection_t	xorn_select_all (xorn_revision_t rev)
	Create a selection containing all objects in a revision. More...

xorn_selection_t	xorn_select_all_except (xorn_revision_t rev, xorn_selection_t sel)
	Create a selection containing all objects in a revision except those in a given selection. More...

xorn_selection_t	xorn_select_including (xorn_selection_t sel, xorn_object_t ob)
	Create a selection which contains all the objects in an existing selection plus a given object. More...

xorn_selection_t	xorn_select_excluding (xorn_selection_t sel, xorn_object_t ob)
	Create a selection which contains all the objects in an existing selection minus a given object. More...

xorn_selection_t	xorn_select_union (xorn_selection_t sel0, xorn_selection_t sel1)
	Create a selection containing the objects in either given selection. More...

xorn_selection_t	xorn_select_intersection (xorn_selection_t sel0, xorn_selection_t sel1)
	Create a selection containing the objects in both given selections. More...

xorn_selection_t	xorn_select_difference (xorn_selection_t sel0, xorn_selection_t sel1)
	Create a selection containing the objects contained in one given selection, but not the other. More...

bool	xorn_selection_is_empty (xorn_revision_t rev, xorn_selection_t sel)
	Return whether a selection is empty in a given revision. More...

bool	xorn_object_is_selected (xorn_revision_t rev, xorn_selection_t sel, xorn_object_t ob)
	Return whether an object exists in a revision and is selected in a selection. More...

void	xorn_free_selection (xorn_selection_t sel)
	Free the memory used for storing a selection. More...

xorn_object_t	xorn_add_object (xorn_revision_t rev, xorn_obtype_t type, const void *data)
	Add a new object to a transient revision. More...

int	xorn_set_object_data (xorn_revision_t rev, xorn_object_t ob, xorn_obtype_t type, const void *data)
	Set an object in a transient revision to the given object type and data. More...

int	xorn_relocate_object (xorn_revision_t rev, xorn_object_t ob, xorn_object_t attach_to, xorn_object_t insert_before)
	Change the location of an object in the object structure of a transient revision. More...

void	xorn_delete_object (xorn_revision_t rev, xorn_object_t ob)
	Delete an object from a transient revision. More...

void	xorn_delete_selected_objects (xorn_revision_t rev, xorn_selection_t sel)
	Delete some objects from a transient revision. More...

xorn_object_t	xorn_copy_object (xorn_revision_t dest, xorn_revision_t src, xorn_object_t ob)
	Copy an object to a transient revision. More...

xorn_selection_t	xorn_copy_objects (xorn_revision_t dest, xorn_revision_t src, xorn_selection_t sel)
	Copy some objects to a transient revision. More...

Detailed Description

Storing file contents in memory.

See here for an overview of the storage library.

Definition in file xornstorage.h.

Typedef Documentation

typedef struct xorn_object * xorn_object_t

Opaque type representing the identity of an object.

A value of this type is used as a key to look up and change the state of an object in a revision. It is created by xorn_add_object, xorn_copy_object, or (indirectly) xorn_copy_objects and doesn't need to be freed explicitly; it loses its meaning once the last revision in which it is valid has been freed.

Definition at line 55 of file xornstorage.h.

typedef struct xorn_revision * xorn_revision_t

Opaque type representing the contents of a file.

A revision points to a particular state of the contents of a file, sharing memory parts between revisions where possible. It is created by xorn_new_revision and needs to be freed explicitly by calling xorn_free_revision.

A revision can be “finalized” by calling xorn_finalize_revision which prevents further changes to it by means of the library's functions. It is of course still possible to create a copy of the revision and modify that.

Definition at line 54 of file xornstorage.h.

typedef struct xorn_selection * xorn_selection_t

Opaque type representing the identity of a set of objects.

A value of this type is used as an set of keys for mass object inspection or manipulation not designating any specific order. It can be created using one of the xorn_select_something class of functions and needs to be freed explicitly by calling xorn_free_selection.

Definition at line 56 of file xornstorage.h.

Enumeration Type Documentation

enum xorn_attst_t

Attribute status across multiple objects.

Returned by the xornsch_get_attribute class of functions.

Enumerator
xorn_attst_na	None of the selected objects has this attribute. Don't show this attribute in the property editor.
xorn_attst_consistent	All selected objects have the same value of this attribute. Show this value for this attribute in the property editor.
xorn_attst_inconsistent	There are different values of this attribute between the selected objects. Show this attribute in the property editor, but don't show a value.

Definition at line 40 of file xornstorage.h.

enum xorn_obtype_t

Object types, each corresponding to a data structure.

The type of an object indicates which data structure is used to encode its parameters. It can be read using xorn_get_object_type. Depending on the object type, the object's data can be read using the appropriate type-safe function, e.g. xornsch_get_line_data for a line object.

Enumerator
xorn_obtype_none	The object does not exist.
xornsch_obtype_arc	See xornsch_arc.
xornsch_obtype_box	See xornsch_box.
xornsch_obtype_circle	See xornsch_circle.
xornsch_obtype_component	See xornsch_component.
xornsch_obtype_line	See xornsch_line.
xornsch_obtype_net	See xornsch_net.
xornsch_obtype_path	See xornsch_path.
xornsch_obtype_picture	See xornsch_picture.
xornsch_obtype_text	See xornsch_text.

Definition at line 27 of file xornstorage.h.

Function Documentation

xorn_object_t xorn_add_object	(	xorn_revision_t	rev,
		xorn_obtype_t	type,
		void const *	data
	)

Add a new object to a transient revision.

The object is appended to the end of the object list.

data must point to a data structure matching the object type indicated by type (e.g., if type is xornsch_obtype_net, then data must point to a xornsch_net structure). The data structure (including referenced strings) will not be accessed after this function has returned.

Returns: Returns the newly created object. If the revision isn't transient, type is not a valid Xorn object type, data is NULL, or there is not enough memory, returns NULL.

Example:

struct xornsch_line line_data;
memset(&line_data, 0, sizeof line_data);
line_data.pos.x = 0;
line_data.pos.y = 0;
line_data.size.x = 100;
line_data.size.y = 100;
line_data.line.width = 1;
xorn_object_t ob;
ob = xorn_add_object(rev, xornsch_obtype_line, &line_data);
if (ob == NULL)
    /* handle error */;

Note: Try not to use this function. There are type-specific functions available (xornsch_add_net etc.) which offer the same functionality but are type-safe.

Definition at line 60 of file manipulate.cc.

xorn_object_t xorn_copy_object	(	xorn_revision_t	dest,
		xorn_revision_t	src,
		xorn_object_t	ob
	)

Copy an object to a transient revision.

Any objects attached to ob are copied as well, their copies being attached to the copy of ob, which is appended to the end of the object list.

Parameters

dest	Destination revision (must be transient)
src	Source revision (does not need to be transient)
ob	Object in the source revision which should be copied

Returns: Returns the copy of ob. If the destination revision isn't transient, ob doesn't exist in the source revision, or there is not enough memory, returns NULL.

Definition at line 392 of file manipulate.cc.

xorn_selection_t xorn_copy_objects	(	xorn_revision_t	dest,
		xorn_revision_t	src,
		xorn_selection_t	sel
	)

Copy some objects to a transient revision.

Any objects attached to the objects are copied as well and attached to the corresponding new object. The copied objects are appended to the end of the object list in an unspecified order.

Parameters

dest	Destination revision (must be transient)
src	Source revision (does not need to be transient)
sel	Objects in the source revision which should be copied

Returns: Returns a selection containing the copied objects, excluding attached objects. If the destination revision isn't transient or there is not enough memory, returns NULL.

Note: You should free the returned selection using xorn_free_selection once it isn't needed any more.

Definition at line 433 of file manipulate.cc.

void xorn_delete_object	(	xorn_revision_t	rev,
		xorn_object_t	ob
	)

Delete an object from a transient revision.

Any objects attached to ob are deleted as well.

The deleted object(s) stay valid and can later be re-added using xorn_set_object_data or its type-safe equivalents.

If the revision isn't transient or the object doesn't exist in the revision, nothing is changed.

Definition at line 301 of file manipulate.cc.

void xorn_delete_selected_objects	(	xorn_revision_t	rev,
		xorn_selection_t	sel
	)

Delete some objects from a transient revision.

Any objects attached to a deleted object are deleted as well.

The deleted objects stay valid and can later be re-added using xorn_set_object_data or its type-safe equivalents.

Objects that don't exist in the revision are ignored. If the revision isn't transient, nothing is changed.

Definition at line 328 of file manipulate.cc.

void xorn_finalize_revision ( xorn_revision_t rev )

Prevent further changes to a revision.

When a revision is created, it is initially transient, i.e. changeable. However, it is typically not desired for a revision to change once it is in its desired state. Using this function, you can prevent further changes to the revision by means of the Xorn functions (though nobody can prevent you from poking into memory and messing things up). It will still be possible to create a copy of the revision and change that.

Definition at line 91 of file revision.cc.

void xorn_free_revision ( xorn_revision_t rev )

Free the memory associated with a revision.

Warning: rev must not be passed to any Xorn function again.

Some memory may be shared between revisions. This memory will be released once all revisions using it have been freed.

Definition at line 103 of file revision.cc.

void xorn_free_selection ( xorn_selection_t sel )

Free the memory used for storing a selection.

Warning: sel must not be passed to any Xorn function again.

Definition at line 277 of file selection.cc.

int xorn_get_added_objects	(	xorn_revision_t	from_rev,
		xorn_revision_t	to_rev,
		xorn_object_t **	objects_return,
		size_t *	count_return
	)

Return a list of objects which are in a revision but not in another.

The returned list contains all objects in to_rev which are not in from_rev. They are not necessarily returned in a meaningful order.

The same semantics apply as in xorn_get_objects. See there for a more detailed description.

Definition at line 246 of file object.cc.

int xorn_get_modified_objects	(	xorn_revision_t	from_rev,
		xorn_revision_t	to_rev,
		xorn_object_t **	objects_return,
		size_t *	count_return
	)

Return a list of objects which exist in two revisions but have different type or data.

The objects are not necessarily returned in a meaningful order.

The same semantics apply as in xorn_get_objects. See there for a more detailed description.

Definition at line 307 of file object.cc.

const void* xorn_get_object_data	(	xorn_revision_t	rev,
		xorn_object_t	ob,
		xorn_obtype_t	type
	)

Get a pointer to an object's data in a given revision.

The returned data structure (including referenced strings) must not be changed by the caller; use xorn_set_object_data or its type-safe equivalents to change the object.

Returns: Returns a pointer to a data structure matching type (e.g., if type is xornsch_obtype_net, returns a pointer to a xornsch_net structure). If the object doesn't exist in rev, or type doesn't match its type, returns NULL.

Example:

const struct xornsch_line *data;
data = xorn_get_object_data(rev, ob, xornsch_obtype_line);
if (data == NULL)
    /* ob doesn't exist or isn't a line */;

Note: Try not to use this function. There are type-specific functions available (xornsch_get_net_data etc.) which offer the same functionality but are type-safe.

Definition at line 64 of file object.cc.

int xorn_get_object_location	(	xorn_revision_t	rev,
		xorn_object_t	ob,
		xorn_object_t *	attached_to_return,
		unsigned int *	position_return
	)

Get the location of an object in the object structure.

Parameters

rev	Revision to examine
ob	Object whose location to return
attached_to_return	Pointer to a variable where to write the object to which ob is attached
position_return	Pointer to a variable where to write the index of ob relative to its sibling objects

Both pointer arguments may be NULL to indicate that the caller isn't interested in the return value.

Returns: Returns 0 and writes the appropriate values to attached_to_return and position_return if ob exists in rev. Otherwise, doesn't touch the values and returns -1.

Definition at line 93 of file object.cc.

xorn_obtype_t xorn_get_object_type	(	xorn_revision_t	rev,
		xorn_object_t	ob
	)

Get the type of an object in a given revision.

Returns xorn_obtype_none if the object doesn't exist in the revision.

Definition at line 35 of file object.cc.

int xorn_get_objects	(	xorn_revision_t	rev,
		xorn_object_t **	objects_return,
		size_t *	count_return
	)

Return a list of all objects in a revision.

A list of xorn_object_t values is allocated and written to, and its location is written to the variable pointed to by objects_return. The number of objects is written to the variable pointed to by count_return. If the list is empty or there is not enough memory, *objects_return may be set to NULL.

The objects are returned in their actual order. Attached objects are listed after the object they are attached to.

Returns: Returns 0 on success and -1 if there is not enough memory.

Note: You should free the returned list using free(3).

Example:

xorn_object_t *objects;
size_t count;
unsigned int i;
if (xorn_get_objects(rev, &objects, &count) == -1)
    /* handle error */;
for (i = 0; i < count; i++)
    /* do something with objects[i] */;
free(objects);

Definition at line 149 of file object.cc.

int xorn_get_objects_attached_to	(	xorn_revision_t	rev,
		xorn_object_t	ob,
		xorn_object_t **	objects_return,
		size_t *	count_return
	)

Return a list of objects in a revision which are attached to a certain object.

If ob is NULL, return all objects in the revision which are not attached. The objects are returned in their actual order. Objects attached to the returned objects are not returned.

objects_return may be NULL to indicate that the caller is only interested in the object count. In this case, the object list isn't created, and the function cannot run out of memory. Otherwise, the same semantics apply as in xorn_get_objects. See there for a more detailed description.

Definition at line 176 of file object.cc.

int xorn_get_removed_objects	(	xorn_revision_t	from_rev,
		xorn_revision_t	to_rev,
		xorn_object_t **	objects_return,
		size_t *	count_return
	)

Return a list of objects which are in a revision but not in another.

The returned list contains all objects in from_rev which are not in to_rev. They are not necessarily returned in a meaningful order.

The same semantics apply as in xorn_get_objects. See there for a more detailed description.

Definition at line 277 of file object.cc.

int xorn_get_selected_objects	(	xorn_revision_t	rev,
		xorn_selection_t	sel,
		xorn_object_t **	objects_return,
		size_t *	count_return
	)

Return a list of objects which are in a revision as well as in a selection.

The objects are not necessarily returned in a meaningful order.

The same semantics apply as in xorn_get_objects. See there for a more detailed description.

Definition at line 215 of file object.cc.

xorn_revision_t xorn_new_revision ( xorn_revision_t rev )

Create a new revision, either from scratch or by copying an existing one.

You should free the revision using xorn_free_revision once it isn't used any more.

Parameters

rev	Revision to copy, or `NULL`.

There is a slight difference between creating two empty revisions and copying an empty one: only in the second case, objects of one revision will be valid in the other.

Returns: Returns the newly created revision, or NULL if there is not enough memory.

Definition at line 56 of file revision.cc.

bool xorn_object_exists_in_revision	(	xorn_revision_t	rev,
		xorn_object_t	ob
	)

Return whether an object exists in a revision.

Definition at line 25 of file object.cc.

bool xorn_object_is_selected	(	xorn_revision_t	rev,
		xorn_selection_t	sel,
		xorn_object_t	ob
	)

Return whether an object exists in a revision and is selected in a selection.

Definition at line 266 of file selection.cc.

int xorn_relocate_object	(	xorn_revision_t	rev,
		xorn_object_t	ob,
		xorn_object_t	attach_to,
		xorn_object_t	insert_before
	)

Change the location of an object in the object structure of a transient revision.

This function performs two distinct operations:

Change the order in which an object is drawn and written to files as compared to its sibling objects.
Attach a schematic text object to a schematic net or component object. As far as this library is concerned, this will cause the text to be copied and deleted along with the net or component.

If attach_to is NULL, the object becomes un-attached. If ob and insert_before are identical and ob is already attached to attach_to, the revision is left unchanged.

Parameters

rev	Revision to modify (must be transient)
ob	The object which should be reordered and/or attached (must be xornsch_text if attach_to is not `NULL`)
attach_to	The object to which ob should be attached (must be xornsch_net or xornsch_component, or `NULL`)
insert_before	An object already attached to attach_to before which ob should be inserted, or `NULL` to append it at the end.

Returns

Returns 0 on success. Returns -1 if

the revision isn't transient,
ob or (if not NULL) attach_to or insert_before don't exist in the revision,
attach_to is not NULL and
- ob is not a schematic text or
- attach_to is not a schematic net or schematic component,
insert_before is not NULL and not attached to attach_to, or
there is not enough memory.

Example:

struct xornsch_text text_data;
memset(&text_data, 0, sizeof text_data);
text_data.text.s = "refdes=R1";
text_data.text.len = strlen(text_data.text.s);
xorn_object_t ob;
ob = xornsch_add_text(rev, &text_data);
if (ob == NULL)
    /* handle error */;
if (xorn_relocate_object(rev, ob, component, NULL) == -1)
    /* handle error */;

Definition at line 219 of file manipulate.cc.

bool xorn_revision_is_transient ( xorn_revision_t rev )

Return whether a revision can be changed.

When a revision is created, it is initially transient, i.e. changeable. This can be changed by calling xorn_finalize_revision. After that, it can't be changed directly any more—you will have to create a transient copy if you want to change it again.

Definition at line 76 of file revision.cc.

xorn_selection_t xorn_select_all ( xorn_revision_t rev )

Create a selection containing all objects in a revision.

Definition at line 90 of file selection.cc.

xorn_selection_t xorn_select_all_except	(	xorn_revision_t	rev,
		xorn_selection_t	sel
	)

Create a selection containing all objects in a revision except those in a given selection.

Definition at line 112 of file selection.cc.

xorn_selection_t xorn_select_attached_to	(	xorn_revision_t	rev,
		xorn_object_t	ob
	)

Create a selection containing all objects in a revision attached to a given object.

The object may be NULL, in which case the selection contains all objects which are not attached.

Returns: Returns the new selection, or NULL if ob does not exist in rev or there is not enough memory.

Definition at line 61 of file selection.cc.

xorn_selection_t xorn_select_difference	(	xorn_selection_t	sel0,
		xorn_selection_t	sel1
	)

Create a selection containing the objects contained in one given selection, but not the other.

Definition at line 224 of file selection.cc.

xorn_selection_t xorn_select_excluding	(	xorn_selection_t	sel,
		xorn_object_t	ob
	)

Create a selection which contains all the objects in an existing selection minus a given object.

Definition at line 156 of file selection.cc.

xorn_selection_t xorn_select_including	(	xorn_selection_t	sel,
		xorn_object_t	ob
	)

Create a selection which contains all the objects in an existing selection plus a given object.

Definition at line 136 of file selection.cc.

xorn_selection_t xorn_select_intersection	(	xorn_selection_t	sel0,
		xorn_selection_t	sel1
	)

Create a selection containing the objects in both given selections.

Definition at line 201 of file selection.cc.

xorn_selection_t xorn_select_none ( )

Create an empty selection.

Definition at line 24 of file selection.cc.

xorn_selection_t xorn_select_object ( xorn_object_t ob )

Create a selection containing a single object.

Definition at line 35 of file selection.cc.

xorn_selection_t xorn_select_union	(	xorn_selection_t	sel0,
		xorn_selection_t	sel1
	)

Create a selection containing the objects in either given selection.

Definition at line 178 of file selection.cc.

bool xorn_selection_is_empty	(	xorn_revision_t	rev,
		xorn_selection_t	sel
	)

Return whether a selection is empty in a given revision.

Definition at line 246 of file selection.cc.

int xorn_set_object_data	(	xorn_revision_t	rev,
		xorn_object_t	ob,
		xorn_obtype_t	type,
		void const *	data
	)

Set an object in a transient revision to the given object type and data.

If the object does not exist in the revision, it is created and appended to the end of the object list.

Parameters

rev	Revision to be changed (must be transient)
ob	An object which has previously been returned by a Xorn function for either this revision, one of its ancestors, or a revision which has a common ancestor with it.
type	New object type (may be different from previous one, but must be `xornsch_obtype_net` or `xornsch_obtype_component` if there are objects attached to ob, and must be `xornsch_obtype_text` if ob itself is attached to an object)
data	Pointer to a data structure matching the object type indicated by type (e.g., if type is `xornsch_obtype_net`, a pointer to a `xornsch_net` structure). The data structure (including referenced strings) will not be accessed after this function has returned.

Returns

Returns 0 if the object has been changed. Returns -1 if

the revision isn't transient,
type is not a valid Xorn object type,
data is NULL,
ob is attached to an object but type doesn't permit attaching the object,
there are objects attached to ob but type doesn't permit attaching objects, or
there is not enough memory.

Example:

struct xornsch_line line_data;
memset(&line_data, 0, sizeof line_data);
line_data.pos.x = 0;
line_data.pos.y = 0;
line_data.size.x = 100;
line_data.size.y = 100;
line_data.line.width = 1;
if (xorn_set_object_data(rev, ob, xornsch_obtype_line, &line_data) == -1)
    /* handle error */;

Note: Try not to use this function. There are type-specific functions available (xornsch_set_net_data etc.) which offer the same functionality but are type-safe.

Definition at line 131 of file manipulate.cc.

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