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authormarha <marha@users.sourceforge.net>2012-11-19 10:16:38 +0100
committermarha <marha@users.sourceforge.net>2012-11-19 10:16:38 +0100
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--- a/xorg-server/xkb/XKM_file_format.txt
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@@ -1,684 +1,684 @@
- XKM File Format Description
- Version 15
-
-1. Introduction
-
-The XKM file format is the exchange format for XKB keyboard descriptions
-between the server and xkbcomp. Usually, the server forks off xkbcomp,
-xkbcomp compiles the XKM format from the given parameters.
-The resulting XKM file is put into a directory readable by the server and
-then parsed.
-
-The XKM format is little more than a binary dump of various XKB-specific
-structures and hence tied to the ABI of the server.
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-1.1 About this file format description
-
-This description was produced by analyzing the XKM parsing code. Parts of
-the file description present in the original format specification may be
-missing. This description thus cannot be a reference document for XKM
-implementations.
-
-No description of the meaning of the various fields is given here. Refer to
-the XKB protocol specification for more details.
- ❧❧❧❧❧❧❧❧❧❧❧
-
-2. Notations used in this document
-
-Notation for structures:
-
-┌───
- Name of struct
- name of field: type or fixed value of field
- name of field: type or fixed value of field
-└───
-
-Data types are identical to those used in the X Protocol specification
-except where noted otherwise. Structs specific to XKM are prefixed with XKM,
-defines specific to the XKB protocol specification are prefixed with Xkb and
-their value is equivalent to that in the protocol specification.
-
-Multiple instances of a given type are denoted in the following form:
- name of field: LISTofFIELDTYPE
-
-Length specifiers for such fields are usually prefixed with num_. For
-example, a struct containing a num_foo of 8 and a 'foo' field contains 8
-structures of type 'foo'.
-
-Variable length padding is specified as pad(x), where x is the length of the
-data to be padded out to a multiple of 4 bytes. For example, given an x of
-10, pad(x) would be the remaining 2 bytes to pad the whole struct to 12
-bytes.
-
-A special notation is a variable content struct. In this case, the contents
-of the struct depend on the value of one or more specific fields.
-┌───
- Name of struct
- field: type or fixed value of field
- field: type or fixed value of field
- ───
- field ⇒ value 1
- ⇒
- specific field: type
- specific field: type
- ───
- field ⇒ value 2
- ⇒
- specific field: type
- specific field: type
-└───
-This notation denotes that if field is of value 1, this struct contains the
-specific fields listed underneath value 1.
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3. XKM Format
-
-The XKM format is a binary format with structs usually being padded to a
-multiple of 4 bytes. No provisions for endianess are provided, the parser is
-left to guess the endianess of the XKM file.
-
- ❧❧❧❧❧❧❧❧❧❧❧
-3.1 Common data types
-
-┌───
- XKMCountedString
- count: CARD16
- string: count * CHAR
- pad: pad(count + 2)
-└───
-
-XKMCountedString is used for user-readable identifiers. Prime example are
-the level names and the section names ("complete", "evdev(inet)", etc.)
-
-┌───
- XKMGroupBits: CARD8
- group1 0x1
- group2 0x2
- group3 0x4
- group4 0x8
-└───
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3.2 Header and Table of Contents
-
-┌───
- XKMHeader
- version: CARD8
- identifier1: 'm'
- identifier2: 'k'
- idenfifier3: 'x'
-└───
-
-The XKM file format has a 4 byte header identifying the file and the XKM
-version. The header is followed by the table of contents indicating the
-sections present in this file.
-
-┌───
- XKMFileInfo
- type: CARD8
- min_keycode: CARD8
- max_keycode: CARD8
- num_sectioninfo: CARD8
- present: CARD16
- pad: CARD16
- sectioninfo: LISTofXKMSectionInfo
-└───
-
-min_keycode and max_keycode specify the keycode range for this keyboard
-descriptions. The core protocol requires min_keycode always be equal to or
-greater than 8.
-
-┌───
- XKMSectionInfo
- type: CARD16
- XkmTypesIndex 0
- XkmCompatMapIndex 1
- XkmSymbolsIndex 2
- XkmIndicatorsIndex 3
- XkmKeyNamesIndex 4
- XkmGeometryIndex 5
- XkmVirtualModsIndex 6
- format: CARD16
- size: CARD16
- offset: CARD16
-└───
-
-Describes the section found in a chunk of a file. This struct is found
-_twice_ in the file per section, once as part of the XKMFileInfo, once at
-the beginning of the actual section (see offset).
-The type specifies the type of the section, the section is to be parsed
-according to this type.
-Size and offset specify the size in bytes and the offset into the file in
-bytes, respectively.
-
-3.3 Sections
-
-Each section resides at the offset specified in the XKMFileInfo sectioninfo.
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3.3.1 XKMTypes
-
-An XKMTypes section describes the key types defined in a layout. Roughly
-speaking, a key type defines how many levels a given key has and which
-modifiers change to a particular level.
-
-┌───
- XKMTypesSection
- section_info: XKMSectionInfo
- name: XKMCountedString
- num_types: CARD16
- pad: CARD16
- types: LISTofXKMKeyType
-└───
-
-┌───
- XKMKeyType
- real_mods: CARD8
- num_levels: CARD8
- virt_mods: CARD16
- num_map_entries: CARD8
- num_level_names: CARD8
- perserve: CARD8
- pad: CARD8
- map_entries: LISTofXKMKTMapEntry
- name: XKMCountedString
- mods: LISTofXKMModsDesc
- level_names: LISXTofXKMCountedString
-└───
-
-The num_map_entries specifies the number of structs in both map_entries and mods. mods is only present if preserve is TRUE.
-
-┌───
- XKMKTMapEntry
- level: CARD8
- real_mods: CARD8
- virt_mods: CARD16
-└───
-
-┌───
- XKMModsDesc
- real_mods: CARD8
- pad: CARD8
- virt_mods: CARD16
-└───
-
- ❧❧❧❧❧❧❧❧❧❧❧
-3.3.2 XKMCompatMap
-
-An XKMCompatMap section describes the actions a keyboard may trigger. This
-ranges from the TerminateServer action to simple modifier bits.
-
-┌───
- XKMCompatMap
- section_info: XKMSectionInfo
- name: XKMCountedString
- num_si: CARD16
- group_mask: XKMGroupBits
- pad: CARD8
- si: LISTofXKMSymInterpreterDesc
- groups: LISTofXKMModsDesc
-└───
-
-One XKMModsDesc is present for each bit set in group_mask.
-
-┌───
- XKMSymInterpretDesc
- sym: CARD32
- mods: CARD8
- match: CARD8
- virtual_mod: CARD8
- flags: CARD8
- action_type: CARD8
- action_data: XKMActionData
-└───
-
-Where the action is 7 bytes of CARD8 whose content is determined by
-action_type.
-
-┌───
- XKMActionData:
- pad0: CARD8
- pad1: CARD16
- pad2: CARD32
- ───
- action_type ⇒ XkbSA_SetMods ||
- action_type ⇒ XkbSA_LatchMods ||
- action_type ⇒ XkbSA_LockMods
- ⇒
- flags: CARD8
- mask: CARD8
- real_mods: CARD8
- vmods1: CARD8
- vmods2: CARD8
- pad: CARD16
- ───
- action_type ⇒ XkbSA_SetGroup ||
- action_type ⇒ XkbSA_LatchGroup ||
- action_type ⇒ XkbSA_LockGroup
- ⇒
- flags: CARD8
- group_XXX: CARD8
- pad0: CARD8
- pad1: CARD32
- ───
- action_type ⇒ XkbSA_MovePtr
- ⇒
- flags: CARD8
- high_XXX: CARD8
- low_XXX: CARD8
- high_YYY: CARD8
- low_YYY: CARD8
- pad: CARD16
- ───
- action_type ⇒ XkbSA_PtrBtn ||
- action_type ⇒ XkbSA_LockPtrBtn
- ⇒
- flags: CARD8
- count: CARD8
- button: CARD8
- pad: CARD32
- ───
- action_type ⇒ XkbSA_DeviceBtn ||
- action_type ⇒ XkbSA_LockLockPtrBtn
- ⇒
- flags: CARD8
- count: CARD8
- button: CARD8
- device: CARD8
- pad0: CARD8
- pad1: CARD16
- ───
- action_type ⇒ XkbSA_SetPtrDflt
- ⇒
- flags: CARD8
- affect: CARD8
- valueXXX: CARD8
- pad0: CARD32
- ───
- action_type ⇒ XkbSA_ISOLock
- ⇒
- flags: CARD8
- mask: CARD8
- real_mods: CARD8
- group_XXX: CARD8
- affect: CARD8
- vmods1: CARD8
- vmods1: CARD8
- ───
- action_type ⇒ XkbSA_SwitchScreen
- ⇒
- flags: CARD8
- screenXXX: CARD8
- pad0: CARD8
- pad1: CARD32
- ───
- action_type ⇒ XkbSA_SetControls ||
- action_type ⇒ XkbSA_LockControls
- ⇒
- flags: CARD8
- ctrls3: CARD8
- ctrls2: CARD8
- ctrls1: CARD8
- ctrls0: CARD8
- pad: CARD16
- ───
- action_type ⇒ XkbSA_RedirectKey
- ⇒
- new_key: CARD8
- mods_mask: CARD8
- mods: CARD8
- vmods_mask0: CARD8
- vmods_mask1: CARD8
- vmods0: CARD8
- vmods1: CARD8
- ───
- action_type ⇒ XkbSA_DeviceValuator
- ⇒
- device: CARD8
- v1_what: CARD8
- v1_idx: CARD8
- v1_value: CARD8
- v2_what: CARD8
- v2_idx: CARD8
- v2_value: CARD8
- pad: CARD8
- ───
- action_type ⇒ XkbSA_XFree86Private ||
- action_type ⇒ XkbSA_Terminate
- ⇒
- pad0: CARD8
- pad1: CARD16
- pad2: CARD32
- ───
- action_type ⇒ XkbSA_ActionMessage
- ⇒
- press_msg: BOOL
- release_msg: BOOL
- gen_event: BOOL
- message: 4 * CHAR
-└───
-
-Note: XkbSA_ActionMessage is currently unsupported and the contents are
-ignored.
-
- ❧❧❧❧❧❧❧❧❧❧❧
-3.3.3 XkmSymbols
-
-The symbols in a keymap define the actual keysyms each key may produce.
-
-┌───
- XKMSymbols
- section_info: XKMSectionInfo
- name: XKMCountedString
- min_keycode: CARD8
- max_keycode: CARD8
- group_names_mask: XKMGroupBits
- num_vmod_maps: CARD8
- group_names: LISTofXKMCountedString
- keysyms: XKMKeysymMapDesc
- vmod_maps: XKMVModMapDesc
-└───
-One group_name is present for each bit set in group_names_mask.
-The number of keysyms present is max_keycode - min_keycode + 1.
-
-┌───
- XKMKeysymMapDesc
- width: CARD8
- num_groups: CARD8
- modifier_map: CARD8
- flags: CARD8
- names: LISTofXKMCountedString
- syms: LISTofCARD32
- behavior: XKMBehaviorDesc
-└───
-
-Presence of names is conditional on the XkmKeyHasTypes flag. The number of
-strings is equal to the number of group bits in group_names_mask in the
-preceeding XKMSymbols section.
-The number of elements in syms is equal to width * num_groups.
-Presence of behavior is conditional on the XkmKeyHasBehavior flag.
-
-┌───
- XKMKeyBehaviorDesc
- type: CARD8
- data: CARD8
- pad: CARD16
-└───
-
-┌───
- XKMVModMapDesc
- key: CARD8
- pad: CARD8
- vmods: CARD16
-└───
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3.3.4 XKMIndicators
-
-┌───
- XKMIndicators
- section_info: XKMSectionInfo
- name: XKMCountedString
- num_indicators: CARD8
- pad0: CARD8
- pad1: CARD16
- indicators: LISTofXKMIndicatorMapDesc
-└───
-
-┌───
- XKMIndicatorMapDesc
- name: XKMCountedString
- indicator: CARD8
- flags: CARD8
- which_mods: CARD8
- real_mods: CARD8
- vmods: CARD16
- which_groups: CARD8
- groups: CARD8
- ctrls: CARD32
-└───
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3.3.5 XKMKeyNames
-
-┌───
- XKMKeyNames
- section_info: XKMSectionInfo
- name: XKMCountedString
- min_keycode: CARD8
- max_keycode: CARD8
- num_aliases: CARD8
- pad: CARD8
- keynames: LISTofXKMKeyname
- aliases: LISTofXKMKeyAlias
-└───
-
-keynames contains max_keycode - min_keycode + 1 entries.
-
-┌───
- XkmKeyname
- name: 4 * CHAR8
-└───
-
-┌───
- XkmKeyAlias
- real: XkmKeyname
- alias: XkmKeyname
-└───
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3.3.5 XKMGeometry
-
-┌───
- XKMGeometry
- section_info: XKMSectionInfo
- name: XKMCountedString
- width_mm: CARD16
- height_mm: CARD16
- base_color_ndx: CARD8
- label_color_ndx: CARD8
- num_properties: CARD16
- num_colors: CARD16
- num_shapes: CARD16
- num_sections: CARD16
- num_doodads: CARD16
- num_key_aliases: CARD16
- pad: CARD16
- label_font: XKMCountedString
- properties: LISTofXKMGeomProperty
- colors: LISTofXKMCountedString
- shapes: LISTofXKMGeomShape
- sections: LISTofXKMGeomSection
- doodads: LISTofXKMGeomDoodad
- key_aliases: LISTofXKMKeyAlias
-└───
-
-┌───
- XKMGeomProperty
- name: XKMCountedString
- value: XKMCountedString
-
-└───
-
-┌───
- XKMGeomShape
- name: XKMCountedString
- num_outlines: CARD8
- primary_idx: CARD8
- approx_idx: CARD8
- pad: CARD8
- outlines: LISTofXKMOutlineDesc
-└───
-
-┌───
- XKMOutlineDesc
- num_points: CARD8
- corner_radius: CARD8
- pad: CARD16
- points: LISTofXKMPointDesc
-└───
-
-┌───
- XKMPointDesc
- x: INT16
- y: INT16
-└───
-
-┌───
- XKMGeomSection
- name: XKMCountedString
- top: INT16
- left: INT16
- width: CARD16
- height: CARD16
- angle: INT16
- priority: CARD8
- num_rows: CARD8
- num_doodads: CARD8
- num_overlays: CARD8
- pad: CARD16
- rows: LISTofXKMRowDesc
- doodads: LISTofXKMGeomDoodad
- overlays: LISTofXKMGeomOverlay
-└───
-
-┌───
- XKMRowDesc
- top: INT16
- left: INT16
- num_keys: CARD8
- vertical: BOOL
- pad: CARD16
- keys: XKMKeyDesc
-└───
-
-┌───
- XKMKeyDesc
- name: XKMKeyname
- gap: INT16
- shape_idx: CARD8
- color_idx: CARD8
-└───
-
-┌───
- XKMGeomDoodad
- name: XKMCountedString
- type: CARD8
- priority: CARD8
- top: INT16
- left: INT16
- pad1: CARD16
- pad2: CARD32
- pad3: CARD32
- ───
- type ⇒ XkbOutlineDoodad ||
- type ⇒ XkbSolideDoodad
- ⇒
- type: CARD8
- priority: CARD8
- top: INT16
- left: INT16
- angle: INT16
- color_idx: CARD8
- shape_idx: CARD8
- pad0: CARD16
- pad1: CARD32
- ───
- type ⇒ XkbTextDoodad
- ⇒
- type: CARD8
- priority: CARD8
- top: INT16
- left: INT16
- angle: INT16
- width: CARD16
- height: CARD16
- color_idx: CARD8
- pad0: CARD8
- pad1: CARD16
- text: XKMCountedString
- font: XKMCountedString
- ───
- type ⇒ XkbIndicatorDoodad
- ⇒
- type: CARD8
- priority: CARD8
- top: INT16
- left: INT16
- shape_idx: CARD8
- on_color_idx: CARD8
- off_color_idx: CARD8
- pad0: CARD8
- pad1: CARD16
- pad2: CARD32
- ───
- type ⇒ XkbLogoDoodad
- ⇒
- type: CARD8
- priority: CARD8
- top: INT16
- left: INT16
- angle: INT16
- color_idx: CARD8
- shape_idx: CARD8
- pad0: CARD16
- pad1: CARD32
- logo_name: XKMCountedString
-└───
-
-WARNING: XKMGeomDoodad has variable length depending on the type.
-NOTE: The current server implementation does not use all fields of all
-structures.
-
-┌───
- XKMOverlayDesc
- name: XKMCountedString
- num_rows: CARD8
- pad0: CARD8
- pad1: CARD16
- rows: LISTofXKMOverlayRowDesc
-└───
-
-┌───
- XKMOverlayRowDesc
- name: XKMCountedString
- row_under: CARD8
- num_keys: CARD8
- pad: CARD16
- keys: LISTofXKMOverlayKeyDesc
-└───
-
-┌───
- XKMOverlayKeyDesc
- over: XKMKeyname
- under: XKMKeyname
-└───
-
- ❧❧❧❧❧❧❧❧❧❧❧
-
-3.3.6 XKMVirtualMods
-
-┌───
- XKMOverlayRowDesc
- section_info: XKMSectionInfo
- name: XKMCountedString
- bound_mask: SETofVMODBITS
- named_mask: SETofVMODBITS
- vmods: LISTofCARD8
- pad: pad(vmods)
- names: LISTofXKMCountedString
-└───
-
- VMODBITS: CARD16
-
-Number of elements in vmods is equal to the number of bits set in
-bound_mask. The padding completes vmods to a multiple of 4 byte units.
-Number of elements in names is equal to the number of bits set in
-named_mask.
+ XKM File Format Description
+ Version 15
+
+1. Introduction
+
+The XKM file format is the exchange format for XKB keyboard descriptions
+between the server and xkbcomp. Usually, the server forks off xkbcomp,
+xkbcomp compiles the XKM format from the given parameters.
+The resulting XKM file is put into a directory readable by the server and
+then parsed.
+
+The XKM format is little more than a binary dump of various XKB-specific
+structures and hence tied to the ABI of the server.
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+1.1 About this file format description
+
+This description was produced by analyzing the XKM parsing code. Parts of
+the file description present in the original format specification may be
+missing. This description thus cannot be a reference document for XKM
+implementations.
+
+No description of the meaning of the various fields is given here. Refer to
+the XKB protocol specification for more details.
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+2. Notations used in this document
+
+Notation for structures:
+
+┌───
+ Name of struct
+ name of field: type or fixed value of field
+ name of field: type or fixed value of field
+└───
+
+Data types are identical to those used in the X Protocol specification
+except where noted otherwise. Structs specific to XKM are prefixed with XKM,
+defines specific to the XKB protocol specification are prefixed with Xkb and
+their value is equivalent to that in the protocol specification.
+
+Multiple instances of a given type are denoted in the following form:
+ name of field: LISTofFIELDTYPE
+
+Length specifiers for such fields are usually prefixed with num_. For
+example, a struct containing a num_foo of 8 and a 'foo' field contains 8
+structures of type 'foo'.
+
+Variable length padding is specified as pad(x), where x is the length of the
+data to be padded out to a multiple of 4 bytes. For example, given an x of
+10, pad(x) would be the remaining 2 bytes to pad the whole struct to 12
+bytes.
+
+A special notation is a variable content struct. In this case, the contents
+of the struct depend on the value of one or more specific fields.
+┌───
+ Name of struct
+ field: type or fixed value of field
+ field: type or fixed value of field
+ ───
+ field ⇒ value 1
+ ⇒
+ specific field: type
+ specific field: type
+ ───
+ field ⇒ value 2
+ ⇒
+ specific field: type
+ specific field: type
+└───
+This notation denotes that if field is of value 1, this struct contains the
+specific fields listed underneath value 1.
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3. XKM Format
+
+The XKM format is a binary format with structs usually being padded to a
+multiple of 4 bytes. No provisions for endianess are provided, the parser is
+left to guess the endianess of the XKM file.
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+3.1 Common data types
+
+┌───
+ XKMCountedString
+ count: CARD16
+ string: count * CHAR
+ pad: pad(count + 2)
+└───
+
+XKMCountedString is used for user-readable identifiers. Prime example are
+the level names and the section names ("complete", "evdev(inet)", etc.)
+
+┌───
+ XKMGroupBits: CARD8
+ group1 0x1
+ group2 0x2
+ group3 0x4
+ group4 0x8
+└───
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3.2 Header and Table of Contents
+
+┌───
+ XKMHeader
+ version: CARD8
+ identifier1: 'm'
+ identifier2: 'k'
+ idenfifier3: 'x'
+└───
+
+The XKM file format has a 4 byte header identifying the file and the XKM
+version. The header is followed by the table of contents indicating the
+sections present in this file.
+
+┌───
+ XKMFileInfo
+ type: CARD8
+ min_keycode: CARD8
+ max_keycode: CARD8
+ num_sectioninfo: CARD8
+ present: CARD16
+ pad: CARD16
+ sectioninfo: LISTofXKMSectionInfo
+└───
+
+min_keycode and max_keycode specify the keycode range for this keyboard
+descriptions. The core protocol requires min_keycode always be equal to or
+greater than 8.
+
+┌───
+ XKMSectionInfo
+ type: CARD16
+ XkmTypesIndex 0
+ XkmCompatMapIndex 1
+ XkmSymbolsIndex 2
+ XkmIndicatorsIndex 3
+ XkmKeyNamesIndex 4
+ XkmGeometryIndex 5
+ XkmVirtualModsIndex 6
+ format: CARD16
+ size: CARD16
+ offset: CARD16
+└───
+
+Describes the section found in a chunk of a file. This struct is found
+_twice_ in the file per section, once as part of the XKMFileInfo, once at
+the beginning of the actual section (see offset).
+The type specifies the type of the section, the section is to be parsed
+according to this type.
+Size and offset specify the size in bytes and the offset into the file in
+bytes, respectively.
+
+3.3 Sections
+
+Each section resides at the offset specified in the XKMFileInfo sectioninfo.
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3.3.1 XKMTypes
+
+An XKMTypes section describes the key types defined in a layout. Roughly
+speaking, a key type defines how many levels a given key has and which
+modifiers change to a particular level.
+
+┌───
+ XKMTypesSection
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ num_types: CARD16
+ pad: CARD16
+ types: LISTofXKMKeyType
+└───
+
+┌───
+ XKMKeyType
+ real_mods: CARD8
+ num_levels: CARD8
+ virt_mods: CARD16
+ num_map_entries: CARD8
+ num_level_names: CARD8
+ perserve: CARD8
+ pad: CARD8
+ map_entries: LISTofXKMKTMapEntry
+ name: XKMCountedString
+ mods: LISTofXKMModsDesc
+ level_names: LISXTofXKMCountedString
+└───
+
+The num_map_entries specifies the number of structs in both map_entries and mods. mods is only present if preserve is TRUE.
+
+┌───
+ XKMKTMapEntry
+ level: CARD8
+ real_mods: CARD8
+ virt_mods: CARD16
+└───
+
+┌───
+ XKMModsDesc
+ real_mods: CARD8
+ pad: CARD8
+ virt_mods: CARD16
+└───
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+3.3.2 XKMCompatMap
+
+An XKMCompatMap section describes the actions a keyboard may trigger. This
+ranges from the TerminateServer action to simple modifier bits.
+
+┌───
+ XKMCompatMap
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ num_si: CARD16
+ group_mask: XKMGroupBits
+ pad: CARD8
+ si: LISTofXKMSymInterpreterDesc
+ groups: LISTofXKMModsDesc
+└───
+
+One XKMModsDesc is present for each bit set in group_mask.
+
+┌───
+ XKMSymInterpretDesc
+ sym: CARD32
+ mods: CARD8
+ match: CARD8
+ virtual_mod: CARD8
+ flags: CARD8
+ action_type: CARD8
+ action_data: XKMActionData
+└───
+
+Where the action is 7 bytes of CARD8 whose content is determined by
+action_type.
+
+┌───
+ XKMActionData:
+ pad0: CARD8
+ pad1: CARD16
+ pad2: CARD32
+ ───
+ action_type ⇒ XkbSA_SetMods ||
+ action_type ⇒ XkbSA_LatchMods ||
+ action_type ⇒ XkbSA_LockMods
+ ⇒
+ flags: CARD8
+ mask: CARD8
+ real_mods: CARD8
+ vmods1: CARD8
+ vmods2: CARD8
+ pad: CARD16
+ ───
+ action_type ⇒ XkbSA_SetGroup ||
+ action_type ⇒ XkbSA_LatchGroup ||
+ action_type ⇒ XkbSA_LockGroup
+ ⇒
+ flags: CARD8
+ group_XXX: CARD8
+ pad0: CARD8
+ pad1: CARD32
+ ───
+ action_type ⇒ XkbSA_MovePtr
+ ⇒
+ flags: CARD8
+ high_XXX: CARD8
+ low_XXX: CARD8
+ high_YYY: CARD8
+ low_YYY: CARD8
+ pad: CARD16
+ ───
+ action_type ⇒ XkbSA_PtrBtn ||
+ action_type ⇒ XkbSA_LockPtrBtn
+ ⇒
+ flags: CARD8
+ count: CARD8
+ button: CARD8
+ pad: CARD32
+ ───
+ action_type ⇒ XkbSA_DeviceBtn ||
+ action_type ⇒ XkbSA_LockLockPtrBtn
+ ⇒
+ flags: CARD8
+ count: CARD8
+ button: CARD8
+ device: CARD8
+ pad0: CARD8
+ pad1: CARD16
+ ───
+ action_type ⇒ XkbSA_SetPtrDflt
+ ⇒
+ flags: CARD8
+ affect: CARD8
+ valueXXX: CARD8
+ pad0: CARD32
+ ───
+ action_type ⇒ XkbSA_ISOLock
+ ⇒
+ flags: CARD8
+ mask: CARD8
+ real_mods: CARD8
+ group_XXX: CARD8
+ affect: CARD8
+ vmods1: CARD8
+ vmods1: CARD8
+ ───
+ action_type ⇒ XkbSA_SwitchScreen
+ ⇒
+ flags: CARD8
+ screenXXX: CARD8
+ pad0: CARD8
+ pad1: CARD32
+ ───
+ action_type ⇒ XkbSA_SetControls ||
+ action_type ⇒ XkbSA_LockControls
+ ⇒
+ flags: CARD8
+ ctrls3: CARD8
+ ctrls2: CARD8
+ ctrls1: CARD8
+ ctrls0: CARD8
+ pad: CARD16
+ ───
+ action_type ⇒ XkbSA_RedirectKey
+ ⇒
+ new_key: CARD8
+ mods_mask: CARD8
+ mods: CARD8
+ vmods_mask0: CARD8
+ vmods_mask1: CARD8
+ vmods0: CARD8
+ vmods1: CARD8
+ ───
+ action_type ⇒ XkbSA_DeviceValuator
+ ⇒
+ device: CARD8
+ v1_what: CARD8
+ v1_idx: CARD8
+ v1_value: CARD8
+ v2_what: CARD8
+ v2_idx: CARD8
+ v2_value: CARD8
+ pad: CARD8
+ ───
+ action_type ⇒ XkbSA_XFree86Private ||
+ action_type ⇒ XkbSA_Terminate
+ ⇒
+ pad0: CARD8
+ pad1: CARD16
+ pad2: CARD32
+ ───
+ action_type ⇒ XkbSA_ActionMessage
+ ⇒
+ press_msg: BOOL
+ release_msg: BOOL
+ gen_event: BOOL
+ message: 4 * CHAR
+└───
+
+Note: XkbSA_ActionMessage is currently unsupported and the contents are
+ignored.
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+3.3.3 XkmSymbols
+
+The symbols in a keymap define the actual keysyms each key may produce.
+
+┌───
+ XKMSymbols
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ min_keycode: CARD8
+ max_keycode: CARD8
+ group_names_mask: XKMGroupBits
+ num_vmod_maps: CARD8
+ group_names: LISTofXKMCountedString
+ keysyms: XKMKeysymMapDesc
+ vmod_maps: XKMVModMapDesc
+└───
+One group_name is present for each bit set in group_names_mask.
+The number of keysyms present is max_keycode - min_keycode + 1.
+
+┌───
+ XKMKeysymMapDesc
+ width: CARD8
+ num_groups: CARD8
+ modifier_map: CARD8
+ flags: CARD8
+ names: LISTofXKMCountedString
+ syms: LISTofCARD32
+ behavior: XKMBehaviorDesc
+└───
+
+Presence of names is conditional on the XkmKeyHasTypes flag. The number of
+strings is equal to the number of group bits in group_names_mask in the
+preceeding XKMSymbols section.
+The number of elements in syms is equal to width * num_groups.
+Presence of behavior is conditional on the XkmKeyHasBehavior flag.
+
+┌───
+ XKMKeyBehaviorDesc
+ type: CARD8
+ data: CARD8
+ pad: CARD16
+└───
+
+┌───
+ XKMVModMapDesc
+ key: CARD8
+ pad: CARD8
+ vmods: CARD16
+└───
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3.3.4 XKMIndicators
+
+┌───
+ XKMIndicators
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ num_indicators: CARD8
+ pad0: CARD8
+ pad1: CARD16
+ indicators: LISTofXKMIndicatorMapDesc
+└───
+
+┌───
+ XKMIndicatorMapDesc
+ name: XKMCountedString
+ indicator: CARD8
+ flags: CARD8
+ which_mods: CARD8
+ real_mods: CARD8
+ vmods: CARD16
+ which_groups: CARD8
+ groups: CARD8
+ ctrls: CARD32
+└───
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3.3.5 XKMKeyNames
+
+┌───
+ XKMKeyNames
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ min_keycode: CARD8
+ max_keycode: CARD8
+ num_aliases: CARD8
+ pad: CARD8
+ keynames: LISTofXKMKeyname
+ aliases: LISTofXKMKeyAlias
+└───
+
+keynames contains max_keycode - min_keycode + 1 entries.
+
+┌───
+ XkmKeyname
+ name: 4 * CHAR8
+└───
+
+┌───
+ XkmKeyAlias
+ real: XkmKeyname
+ alias: XkmKeyname
+└───
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3.3.5 XKMGeometry
+
+┌───
+ XKMGeometry
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ width_mm: CARD16
+ height_mm: CARD16
+ base_color_ndx: CARD8
+ label_color_ndx: CARD8
+ num_properties: CARD16
+ num_colors: CARD16
+ num_shapes: CARD16
+ num_sections: CARD16
+ num_doodads: CARD16
+ num_key_aliases: CARD16
+ pad: CARD16
+ label_font: XKMCountedString
+ properties: LISTofXKMGeomProperty
+ colors: LISTofXKMCountedString
+ shapes: LISTofXKMGeomShape
+ sections: LISTofXKMGeomSection
+ doodads: LISTofXKMGeomDoodad
+ key_aliases: LISTofXKMKeyAlias
+└───
+
+┌───
+ XKMGeomProperty
+ name: XKMCountedString
+ value: XKMCountedString
+
+└───
+
+┌───
+ XKMGeomShape
+ name: XKMCountedString
+ num_outlines: CARD8
+ primary_idx: CARD8
+ approx_idx: CARD8
+ pad: CARD8
+ outlines: LISTofXKMOutlineDesc
+└───
+
+┌───
+ XKMOutlineDesc
+ num_points: CARD8
+ corner_radius: CARD8
+ pad: CARD16
+ points: LISTofXKMPointDesc
+└───
+
+┌───
+ XKMPointDesc
+ x: INT16
+ y: INT16
+└───
+
+┌───
+ XKMGeomSection
+ name: XKMCountedString
+ top: INT16
+ left: INT16
+ width: CARD16
+ height: CARD16
+ angle: INT16
+ priority: CARD8
+ num_rows: CARD8
+ num_doodads: CARD8
+ num_overlays: CARD8
+ pad: CARD16
+ rows: LISTofXKMRowDesc
+ doodads: LISTofXKMGeomDoodad
+ overlays: LISTofXKMGeomOverlay
+└───
+
+┌───
+ XKMRowDesc
+ top: INT16
+ left: INT16
+ num_keys: CARD8
+ vertical: BOOL
+ pad: CARD16
+ keys: XKMKeyDesc
+└───
+
+┌───
+ XKMKeyDesc
+ name: XKMKeyname
+ gap: INT16
+ shape_idx: CARD8
+ color_idx: CARD8
+└───
+
+┌───
+ XKMGeomDoodad
+ name: XKMCountedString
+ type: CARD8
+ priority: CARD8
+ top: INT16
+ left: INT16
+ pad1: CARD16
+ pad2: CARD32
+ pad3: CARD32
+ ───
+ type ⇒ XkbOutlineDoodad ||
+ type ⇒ XkbSolideDoodad
+ ⇒
+ type: CARD8
+ priority: CARD8
+ top: INT16
+ left: INT16
+ angle: INT16
+ color_idx: CARD8
+ shape_idx: CARD8
+ pad0: CARD16
+ pad1: CARD32
+ ───
+ type ⇒ XkbTextDoodad
+ ⇒
+ type: CARD8
+ priority: CARD8
+ top: INT16
+ left: INT16
+ angle: INT16
+ width: CARD16
+ height: CARD16
+ color_idx: CARD8
+ pad0: CARD8
+ pad1: CARD16
+ text: XKMCountedString
+ font: XKMCountedString
+ ───
+ type ⇒ XkbIndicatorDoodad
+ ⇒
+ type: CARD8
+ priority: CARD8
+ top: INT16
+ left: INT16
+ shape_idx: CARD8
+ on_color_idx: CARD8
+ off_color_idx: CARD8
+ pad0: CARD8
+ pad1: CARD16
+ pad2: CARD32
+ ───
+ type ⇒ XkbLogoDoodad
+ ⇒
+ type: CARD8
+ priority: CARD8
+ top: INT16
+ left: INT16
+ angle: INT16
+ color_idx: CARD8
+ shape_idx: CARD8
+ pad0: CARD16
+ pad1: CARD32
+ logo_name: XKMCountedString
+└───
+
+WARNING: XKMGeomDoodad has variable length depending on the type.
+NOTE: The current server implementation does not use all fields of all
+structures.
+
+┌───
+ XKMOverlayDesc
+ name: XKMCountedString
+ num_rows: CARD8
+ pad0: CARD8
+ pad1: CARD16
+ rows: LISTofXKMOverlayRowDesc
+└───
+
+┌───
+ XKMOverlayRowDesc
+ name: XKMCountedString
+ row_under: CARD8
+ num_keys: CARD8
+ pad: CARD16
+ keys: LISTofXKMOverlayKeyDesc
+└───
+
+┌───
+ XKMOverlayKeyDesc
+ over: XKMKeyname
+ under: XKMKeyname
+└───
+
+ ❧❧❧❧❧❧❧❧❧❧❧
+
+3.3.6 XKMVirtualMods
+
+┌───
+ XKMOverlayRowDesc
+ section_info: XKMSectionInfo
+ name: XKMCountedString
+ bound_mask: SETofVMODBITS
+ named_mask: SETofVMODBITS
+ vmods: LISTofCARD8
+ pad: pad(vmods)
+ names: LISTofXKMCountedString
+└───
+
+ VMODBITS: CARD16
+
+Number of elements in vmods is equal to the number of bits set in
+bound_mask. The padding completes vmods to a multiple of 4 byte units.
+Number of elements in names is equal to the number of bits set in
+named_mask.