1 \input texinfo @c -*-texinfo-*-
2 @c %**start of header (This is for running texinfo on a region.)
3 @setfilename gobject.info
4 @settitle CL-Gtk2-GObject
5 @c %**end of header (This is for running texinfo on a region.)
7 @c @documentencoding utf-8
19 @macro Accessor {args}
20 @deffn {Accessor} \args\
24 @macro GenericFunction {args}
25 @deffn {Generic Function} \args\
29 @macro ForeignType {args}
30 @deftp {Foreign Type} \args\
34 @macro Variable {args}
35 @defvr {Special Variable} \args\
39 @macro Condition {args}
40 @deftp {Condition Type} \args\
50 @strong{Implementor's note:} @emph{\text\}
54 @c Info "requires" that x-refs end in a period or comma, or ) in the
55 @c case of @pxref. So the following implements that requirement for
56 @c the "See also" subheadings that permeate this manual, but only in
68 @c Typeset comments in roman font for the TeX output.
76 @c My copy of makeinfo is not generating any HTML for @result{} for
77 @c some odd reason. (It certainly used to...)
84 @c Similar macro to @result. Its purpose is to work around the fact
85 @c that ⇒ does not work properly inside @lisp.
98 @c ============================= Macros =============================
101 @c Show types, functions, and concepts in the same index.
107 @subtitle A Common Lisp binding for Gtk+
109 @author Dmitry Kalyanov
123 * Type hierarchy and type relations::
124 * Object types information::
125 * Enum types information::
129 * GObject low-level::
130 * GObject high-level::
131 * Subclassing GObjects and implementing GInterfaces::
133 * Generating type definitions by introspection::
137 @chapter Introduction
139 GObject is a part of GLib library that implements the type system. The CL-GTK2-GObject is a Common Lisp binding for relevant parts of GObject.
141 The purpose of CL-GTK2-GObject is to ease the creation of binding for libraries based on GObject.
143 Please bear in mind that this is the documentation for a work-in-progress library and is a snapshot of current situation. API and functionality may (and will) change. Largely unfinished parts are working with GBoxed types, subclassing GObjects and implementing GInterfaces.
145 CL-GTK2-GObject is logically split into several layers:
147 @item FFI code. FFI (foreign functions interface) layer is a glue between Lisp code and @code{libglib}, @code{libgobject}, @code{libgthread}. This code includes basic wrapper around GType designator (it is used everywhere and should be defined first) and definitions of foreign structures and imports foreign functions.
148 @item Low-level GObject integration. These are facilities provided by GObject that capture specific aspects of type system, object system and cross-language runtime. This includes types information, GValues (generic containers for value of any type supported by GObject type system), closures, means to create and use objects. This layer also includes some non-GObject facilities: stable pointers.
149 @item High-level GObject integration. This layer includes support for interoperability between CLOS and GObject and automatic generation of corresponding definitions.
152 Naturally, users of CL-GTK2-GObject should use the high-level GObject integration, but occasionaly it may be necessary to use lower-level functionality.
155 @chapter Installation
157 CL-GTK2-GObject comes as a part of CL-GTK2 bindings that are avaiable at its @uref{http://common-lisp.net/project/cl-gtk2/,,website}.
159 To use the CL-GTK2-GObject, download and install CL-GTK2 bindings and load the ASDF system @code{cl-gtk2-glib}.
161 CL-GTK2-GObject defines two packages: @code{gobject} and @code{gobject.ffi}. The @code{gobject.ffi} package contains definitions for low-level CFFI imports. The @code{gobject} package contains symbols for external API of this GObject binding.
163 @node GType designator
164 @chapter GType designator
173 GObject is an object system based on GType type system. Types in it are identified by an integer value of type @code{GType}. In @code{cl-gtk2-gobject}, types are identified by GType designators. GType designator is an integer (equal to corresponding GType identifier) or a string (equal to the name of corresponding type). The important difference between GType and GType designator is that GType values may change between program runs (all GTypes except fundamental GTypes will change values), but string GType designators do not change (because names of types do not change). As such, if ever GType must be saved in a code, string GType designator should be preferred.
175 An example of GType designator is a string @code{"GObject"} and the numeric value 80 that corresponds to it.
177 Some of the types are fundamental and have constant integer values. They are identified by constants (strings in parentheses are corresponding type names):
179 @item @code{+g-type-invalid+}. An invalid GType used as error return value in some functions which return a GType.
180 @item @code{+g-type-void+} ("void"). A fundamental type which is used as a replacement for the C @code{void} return type.
181 @item @code{+g-type-interface+} ("GInterface"). The fundamental type from which all interfaces are derived.
182 @item @code{+g-type-char+} ("gchar"). The fundamental type corresponding to gchar. The type designated by @code{+g-type-char+} is unconditionally an 8-bit signed integer. This may or may not be the same type a the C type @code{gchar}.
183 @item @code{+g-type-uchar+} ("guchar"). The fundamental type corresponding to @code{guchar}.
184 @item @code{+g-type-boolean+} ("gboolean"). The fundamental type corresponding to @code{gboolean}.
185 @item @code{+g-type-int+} ("gint"). The fundamental type corresponding to @code{gint}.
186 @item @code{+g-type-uint+} ("guint"). The fundamental type corresponding to @code{guint}.
187 @item @code{+g-type-long+} ("glong"). The fundamental type corresponding to @code{glong}.
188 @item @code{+g-type-ulong+} ("gulong"). The fundamental type corresponding to @code{gulong}.
189 @item @code{+g-type-int64+} ("gint64"). The fundamental type corresponding to @code{gint64}.
190 @item @code{+g-type-uint64+} ("guint64"). The fundamental type corresponding to @code{guint64}.
191 @item @code{+g-type-enum+} ("GEnum"). The fundamental type from which all enumeration types are derived.
192 @item @code{+g-type-flags+} ("GFlags"). The fundamental type from which all flags types are derived.
193 @item @code{+g-type-float+} ("gfloat"). The fundamental type corresponding to @code{gfloat}.
194 @item @code{+g-type-double+} ("gdouble"). The fundamental type corresponding to @code{gdouble}.
195 @item @code{+g-type-string+} ("gchararray"). The fundamental type corresponding to null-terminated C strings.
196 @item @code{+g-type-pointer+} ("gpointer"). The fundamental type corresponding to @code{gpointer}.
197 @item @code{+g-type-boxed+} ("GBoxed"). The fundamental type from which all boxed types are derived.
198 @item @code{+g-type-param+} ("GParam"). The fundamental type from which all GParamSpec types are derived.
199 @item @code{+g-type-object+} ("GObject"). The fundamental type for GObject.
202 Functions @ref{g-type-string} and @ref{g-type-numeric} return the numeric and string representations of GType designators (given any of them). Functions @ref{g-type=} and @ref{g-type/=} check types for equality.
204 Invalid type (the GType that does not exist) is identified as a 0 or @code{NIL}.
207 (g-type-numeric "GObject") @result{} 80
208 (g-type-numeric 80) @result{} 80
209 (g-type-string "GObject") @result{} "GObject"
210 (g-type-string 80) @result{} "GObject"
211 (g-type-numeric "GtkWidget") @result{} 6905648 ;;Will be different on each run
215 @section g-type-string
217 @code{(g-type-string g-type-designator) @result{} name}
220 @item @var{g-type-designator}
221 The GType designator for the GType
226 Returns the name of GType.
229 @section g-type-numeric
231 @code{(g-type-numeric g-type-designator) @result{} GType}
234 @item @var{g-type-designator}.
235 The GType designator for the GType.
237 The numeric identifier of GType
240 Returns the numeric identifier of GType
245 @code{(g-type= type-1 type-2) @result{} eq}
253 A boolean that is true if @code{type-1} and @code{type-2} designate the same type.
259 @code{(g-type/= type-1 type-2) @result{} eq}
267 A boolean that is true if @code{type-1} and @code{type-2} designate different types.
270 @node Type hierarchy and type relations
271 @chapter Type hierarchy and type relations
276 * g-type-fundamental::
281 GTypes are organized into hierarchy. Each GType (except fundamental types) has a parent type and zero or more children types. Parent of GType identified by @code{g-type-parent} function and its children are identified by @code{g-type-children} function.
283 There are functions to query some specific information:
285 @item @code{g-type-fundamental} retrieves the fundamental type for given type
286 @item @code{g-type-depth} calculates the depth of the type in type hierarchy
287 @item @code{g-type-next-base} calculates the first step in the path from base type to descendent type
290 @node g-type-children
291 @section g-type-children
293 @code{(g-type-children type) @result{} children}
298 A list of GType designators
301 Returns the list of descendent types.
305 (g-type-children "GtkButton")
307 ("GtkToggleButton" "GtkColorButton" "GtkFontButton" "GtkLinkButton" "GtkScaleButton")
311 @section g-type-parent
313 @code{(g-type-parent type) @result{} parent}
322 Returns the parent of @code{type}.
326 (g-type-parent "GtkToggleButton")
330 @node g-type-fundamental
331 @section g-type-fundamental
333 @code{(g-type-fundamental type) @result{} fundamental-type}
338 @item @var{fundamental-type}
339 A GType designator for one of the fundamental types
342 Returns the fundamental type that is the ancestor of @code{type}.
346 (g-type-fundamental "GtkButton") @result{} "GObject"
348 (g-type-fundamental "GtkWindowType") @result{} "GEnum"
350 (g-type-fundamental "GdkEvent") @result{} "GBoxed"
354 @section g-type-depth
356 @code{(g-type-depth type) @result{} depth}
365 Returns the depth of the @code{type}. Depth is the number of types between the @code{type} and its fundamental types (including both @code{type} and its fundamental type). Depth of a fundamental type equals to 1.
369 (g-type-depth "GObject") @result{} 1
370 (g-type-depth "GInitiallyUnowned") @result{} 2
373 @node g-type-next-base
374 @section g-type-next-base
376 @code{(g-type-next-base leaf-type root-type) @result{} base-type}
379 @item @var{leaf-type}
381 @item @var{root-type}
383 @item @var{base-type}
387 Returns the next type that should be traversed from @code{root-type} in order to reach @code{leaf-type}. E.g., given type hierarchy:
404 the following will be returned:
407 (g-type-next-base "GtkTable" "GObject") @result{} "GInitiallyUnowned"
408 (g-type-next-base "GtkTable" "GInitiallyUnowned") @result{} "GtkObject"
409 (g-type-next-base "GtkTable" "GtkObject") @result{} "GtkWidget"
410 (g-type-next-base "GtkTable" "GtkWidget") @result{} "GtkContainer"
411 (g-type-next-base "GtkTable" "GtkContainer") @result{} "GtkTable"
414 @node Object types information
415 @chapter Object types information
417 * g-class-property-definition::
419 * class-property-info::
420 * interface-properties::
423 * parse-signal-name::
424 * query-signal-info::
425 * g-type-interfaces::
426 * g-type-interface-prerequisites::
429 GObject classes and interfaces have properties that can be queried with @code{class-properties}, @code{class-property-info} and @code{interface-properties}. These functions represent information about properties with instances of @code{g-class-property-definition} structure.
431 Information about signals can be queries with @code{type-signals}, @code{parse-signal-name} and @code{query-signal-info} functions. Information is returned within instances of @code{signal-info} structures.
433 @node g-class-property-definition
434 @section g-class-property-definition
437 (defstruct g-class-property-definition
449 A string that names the property
451 A GType designator. Identifies the type of the property
453 A boolean. Identifies whether the property can be read
455 A boolean. Identifies whether the property can be assigned
456 @item @var{constructor}
457 A boolean. Identifies whether constructor of object accepts this property
458 @item @var{constructor-only}
459 A boolean. Identifies whether this property may only be set in constructor, not in property setter
460 @item @var{owner-type}
461 A GType designator. Identifies the type on which the property was defined.
464 This structure identifies a single property. Its field specify attributes of a property.
466 Structures of this type have shortened print syntax:
468 #<PROPERTY gchararray GtkButton.label (flags: readable writable constructor)>
471 (When @code{*print-readably*} is T, usual @code{defstruct} print syntax is used)
473 This syntax specifies:
475 @item type of property
476 @item the owner type of property
477 @item name of property
478 @item additional flags of property
481 @node class-properties
482 @section class-properties
484 @code{(class-properties type) @result{} properties}
488 A GType designator. Specifies the object type (class)
489 @item @var{properties}
490 A list of @code{g-property-definition} structures.
493 This function returns the list of properties that are available in class @code{type}.
497 (class-properties "GtkWidget")
499 (#<PROPERTY gpointer GtkObject.user-data (flags: readable writable)>
500 #<PROPERTY gchararray GtkWidget.name (flags: readable writable)>
501 #<PROPERTY GtkContainer GtkWidget.parent (flags: readable writable)>
502 #<PROPERTY gint GtkWidget.width-request (flags: readable writable)>
503 #<PROPERTY gint GtkWidget.height-request (flags: readable writable)>
504 #<PROPERTY gboolean GtkWidget.visible (flags: readable writable)>
505 #<PROPERTY gboolean GtkWidget.sensitive (flags: readable writable)>
506 #<PROPERTY gboolean GtkWidget.app-paintable (flags: readable writable)>
507 #<PROPERTY gboolean GtkWidget.can-focus (flags: readable writable)>
508 #<PROPERTY gboolean GtkWidget.has-focus (flags: readable writable)>
509 #<PROPERTY gboolean GtkWidget.is-focus (flags: readable writable)>
510 #<PROPERTY gboolean GtkWidget.can-default (flags: readable writable)>
511 #<PROPERTY gboolean GtkWidget.has-default (flags: readable writable)>
512 #<PROPERTY gboolean GtkWidget.receives-default (flags: readable writable)>
513 #<PROPERTY gboolean GtkWidget.composite-child (flags: readable)>
514 #<PROPERTY GtkStyle GtkWidget.style (flags: readable writable)>
515 #<PROPERTY GdkEventMask GtkWidget.events (flags: readable writable)>
516 #<PROPERTY GdkExtensionMode GtkWidget.extension-events (flags: readable writable)>
517 #<PROPERTY gboolean GtkWidget.no-show-all (flags: readable writable)>
518 #<PROPERTY gboolean GtkWidget.has-tooltip (flags: readable writable)>
519 #<PROPERTY gchararray GtkWidget.tooltip-markup (flags: readable writable)>
520 #<PROPERTY gchararray GtkWidget.tooltip-text (flags: readable writable)>
521 #<PROPERTY GdkWindow GtkWidget.window (flags: readable)>)
524 @node class-property-info
525 @section class-property-info
526 @code{(class-property-info type property-name) @result{} property}
531 @item @var{property-name}
532 A string naming the property
534 An instance of @code{g-property-definition} structure
537 Returns the property information for a single property.
541 (class-property-info "GtkButton" "label")
543 #<PROPERTY gchararray GtkButton.label (flags: readable writable constructor)>
546 @node interface-properties
547 @section interface-properties
549 @code{(interface-properties type) @result{} properties}
554 @item @var{properties}
555 A list of @code{g-property-definition} structures
558 This function returns the list of properties that are available in interface @code{type}.
562 (interface-properties "GtkFileChooser")
564 (#<PROPERTY GtkWidget GtkFileChooser.extra-widget (flags: readable writable)>
565 #<PROPERTY gboolean GtkFileChooser.use-preview-label (flags: readable writable)>
566 #<PROPERTY gboolean GtkFileChooser.preview-widget-active (flags: readable writable)>
567 #<PROPERTY gboolean GtkFileChooser.show-hidden (flags: readable writable)>
568 #<PROPERTY gchararray GtkFileChooser.file-system-backend (flags: writable constructor-only)>
569 #<PROPERTY GtkFileChooserAction GtkFileChooser.action (flags: readable writable)>
570 #<PROPERTY GtkFileFilter GtkFileChooser.filter (flags: readable writable)>
571 #<PROPERTY gboolean GtkFileChooser.select-multiple (flags: readable writable)>
572 #<PROPERTY GtkWidget GtkFileChooser.preview-widget (flags: readable writable)>
573 #<PROPERTY gboolean GtkFileChooser.local-only (flags: readable writable)>
574 #<PROPERTY gboolean GtkFileChooser.do-overwrite-confirmation (flags: readable writable)>)
581 (defstruct signal-info
593 An integer - the identifier of a signal
596 @item @var{owner-type}
597 A GType designator identifying the type on which the signal was defined
599 A list of keywords of type @code{'(member :run-first :run-last :run-cleanup :no-recurse :detailed :action :no-hooks)}. Specifies the attributes of a signals
600 @item @var{return-type}
601 The return type of a signal (and signal handlers)
602 @item @var{param-types}
603 A list of GType designators that specify the types of signal parameters
605 A string. Specifies the "detail" part of a signal name. E.g., @code{"label"} for signal @code{"notify::label"}.
608 When @code{*print-readably*} is nil, the following print syntax is used:
610 #<Signal [#1] void GObject.notify::label(GParam) [RUN-FIRST, NO-RECURSE, DETAILED, ACTION, NO-HOOKS]>
611 #<Signal [#54] gboolean GtkWidget.proximity-in-event(GdkEvent) [RUN-LAST]>
612 #<Signal [#64] void GtkWidget.drag-data-received(GdkDragContext, gint, gint, GtkSelectionData, guint, guint) [RUN-LAST]>
613 #<Signal [#8] void GtkObject.destroy() [RUN-CLEANUP, NO-RECURSE, NO-HOOKS]>
616 This syntax specifies:
619 @item signal return type
623 @item list of types of parameters
628 @section type-signals
629 @code{(type-signals type &key (include-inherited t)) @result{} signals}
634 A list of @code{signal-info} structures
635 @item @var{include-inherited}
636 A boolean that specifies whether to include signals defined on this type or also on ancestor types.
639 Returns the list of signals that are available in type @code{type}.
643 (type-signals "GtkLabel" :include-inherited nil)
645 (#<Signal [#138] void GtkLabel.move-cursor(GtkMovementStep, gint, gboolean) [RUN-LAST, ACTION]>
646 #<Signal [#139] void GtkLabel.copy-clipboard() [RUN-LAST, ACTION]>
647 #<Signal [#140] void GtkLabel.populate-popup(GtkMenu) [RUN-LAST]>)
650 @node parse-signal-name
651 @section parse-signal-name
653 @code{(parse-signal-name type signal-name) @result{} signal}
657 A GType designator that has the signal.
658 @item @var{signal-name}
659 A string that identifies the signal.
661 A list @code{signal-info} structures.
664 Parses the signal name and returns the corresponding information. @code{signal-name} may include the detail part.
668 (parse-signal-name "GObject" "notify::label")
670 #<Signal [#1] void GObject.notify::label(GParam) [RUN-FIRST, NO-RECURSE, DETAILED, ACTION, NO-HOOKS]>
673 @node query-signal-info
674 @section query-signal-info
675 @code{(query-signal-info signal-id) @result{} signal}
677 @item @var{signal-id}
678 An integer identifying the signal
680 An instance of @code{signal-info} structure
683 Retrieves the signal information by its id.
687 (query-signal-info 73)
689 #<Signal [#73] gboolean GtkWidget.show-help(GtkWidgetHelpType) [RUN-LAST, ACTION]>
692 @node g-type-interfaces
693 @section g-type-interfaces
695 @code{(g-type-interfaces type) @result{} interfaces}
700 @item @var{interfaces}
701 A list of GType designators
704 Returns the list of interfaces that @code{type} implements.
708 (g-type-interfaces "GtkButton")
710 ("AtkImplementorIface" "GtkBuildable" "GtkActivatable")
713 @node g-type-interface-prerequisites
714 @section g-type-interface-prerequisites
716 @code{(g-type-interface-prerequisites type) @result{} types}
720 A GType designator of interface
722 A list of GType designators specifying the interface prerequisites
725 Returns the prerequisites of an interface @code{type}. Prerequisite is a type that should be an ancestor of a type implementing interface @code{type}.
729 (g-type-interface-prerequisites "GtkCellEditable")
731 ("GtkObject" "GtkWidget")
734 @node Enum types information
735 @chapter Enum types information
743 Enum types have items that can be listed with @code{get-enum-items} function. This information is exposed within instances of @code{enum-item} structure.
745 Flags types (flags is a kind of enum whose values can be combined) have items that can be queried with @code{get-flags-items} function. This information is exposed within instances of @code{flags-item} structure.
756 A string - name of enum item
758 An integer - numeric value of enum item
760 A string - short name of an enum item
763 Structure @code{enum-item} represents a single item of an enumeration type.
767 #S(ENUM-ITEM :NAME "GTK_WINDOW_TOPLEVEL" :VALUE 0 :NICK "toplevel")
773 (defstruct flags-item
779 A string - name of flags item
781 An integer - numeric value of flags item
783 A string - short name of an flags item
786 Structure @code{flags-item} represents a single item of an flags type.
791 :NAME "GDK_POINTER_MOTION_HINT_MASK"
793 :NICK "pointer-motion-hint-mask")
797 @section get-enum-items
799 @code{(get-enum-items type) @result{} items}
803 A GType designator of an enum type
805 A list of @code{enum-item} structures
808 Returns a list of items in an enumeration
812 (get-enum-items "GtkScrollType")
814 (#S(ENUM-ITEM :NAME "GTK_SCROLL_NONE" :VALUE 0 :NICK "none")
815 #S(ENUM-ITEM :NAME "GTK_SCROLL_JUMP" :VALUE 1 :NICK "jump")
816 #S(ENUM-ITEM :NAME "GTK_SCROLL_STEP_BACKWARD" :VALUE 2 :NICK "step-backward")
817 #S(ENUM-ITEM :NAME "GTK_SCROLL_STEP_FORWARD" :VALUE 3 :NICK "step-forward")
818 #S(ENUM-ITEM :NAME "GTK_SCROLL_PAGE_BACKWARD" :VALUE 4 :NICK "page-backward")
819 #S(ENUM-ITEM :NAME "GTK_SCROLL_PAGE_FORWARD" :VALUE 5 :NICK "page-forward")
820 #S(ENUM-ITEM :NAME "GTK_SCROLL_STEP_UP" :VALUE 6 :NICK "step-up")
821 #S(ENUM-ITEM :NAME "GTK_SCROLL_STEP_DOWN" :VALUE 7 :NICK "step-down")
822 #S(ENUM-ITEM :NAME "GTK_SCROLL_PAGE_UP" :VALUE 8 :NICK "page-up")
823 #S(ENUM-ITEM :NAME "GTK_SCROLL_PAGE_DOWN" :VALUE 9 :NICK "page-down")
824 #S(ENUM-ITEM :NAME "GTK_SCROLL_STEP_LEFT" :VALUE 10 :NICK "step-left")
825 #S(ENUM-ITEM :NAME "GTK_SCROLL_STEP_RIGHT" :VALUE 11 :NICK "step-right")
826 #S(ENUM-ITEM :NAME "GTK_SCROLL_PAGE_LEFT" :VALUE 12 :NICK "page-left")
827 #S(ENUM-ITEM :NAME "GTK_SCROLL_PAGE_RIGHT" :VALUE 13 :NICK "page-right")
828 #S(ENUM-ITEM :NAME "GTK_SCROLL_START" :VALUE 14 :NICK "start")
829 #S(ENUM-ITEM :NAME "GTK_SCROLL_END" :VALUE 15 :NICK "end"))
832 @node get-flags-items
833 @section get-flags-items
835 @code{(get-flags-items type) @result{} items}
839 A GType designator of an flags type
841 A list of @code{flags-item} structures
844 Returns a list of items in an flags type
848 (get-flags-items "GtkAttachOptions")
850 (#S(FLAGS-ITEM :NAME "GTK_EXPAND" :VALUE 1 :NICK "expand")
851 #S(FLAGS-ITEM :NAME "GTK_SHRINK" :VALUE 2 :NICK "shrink")
852 #S(FLAGS-ITEM :NAME "GTK_FILL" :VALUE 4 :NICK "fill"))
856 @chapter Using GValues
863 * Registering types::
866 GValue is a generic container for arbitrary value of type supported by GType system. Refer to GObject documentation for more detailed information.
868 CL-GTK2-GOBJECT works with GValue as a foreign type @code{g-value}. Functions @code{g-value-zero}, @code{g-value-type}, @code{g-value-init}, @code{parse-g-value}, @code{set-g-value} are used to inspect and assign GValues. @code{g-value} is a CFFI foreign type that is used by all these functions. Pointer to foreign instance of this type is passed to them.
870 GValue is used whenever a value of unkown type should be passed. It is used in:
872 @item Closure marshal functions
873 @item Property get and set functions
878 (cffi:with-foreign-object (gval 'g-value)
879 (set-g-value gval "Hello" "gchararray" :zero-g-value t)
880 (format t "~S~%" (parse-g-value gval))
881 (g-value-unset gval))
887 @section g-value-zero
888 @code{(g-value-zero g-value)}
891 A foreign pointer to GValue structure.
894 Initializes the GValue to "unset" state. Equivalent of the following initializer in C:
896 GValue value = @{ 0 @};
899 Must be called before other functions that work with GValue (except @code{set-g-value} with keyword argument @code{:zero-g-value} set to true).
902 @section g-value-init
904 @code{(g-value-init value type)}
907 A foreign pointer to GValue structure
912 Initializes the GValue to store instances of type @code{type}. Must be called before other functions operate on GValue (except @code{g-value-zero} and @code{set-g-value} with keyword argument @code{:g-value-init} set to true).
915 @section g-value-unset
916 @code{(g-value-unset value)}
919 A foreign pointer to GValue structure.
922 Unsets the GValue. This frees all resources associated with GValue.
925 @section parse-g-value
926 @code{(parse-g-value value) @result{} object}
929 A foreign pointer to GValue structure
934 Retrieves the object from GValue structure.
938 @code{(set-g-value gvalue object type &key zero-g-value unset-g-value (g-value-init t))}
942 A foreign pointer to GValue structure
944 An object that is to be assigned to @code{gvalue}
946 A GType designator specifying what GType should be set
947 @item @var{unset-g-value}
948 A boolean specifying whether to call @code{g-value-unset} before assigment.
949 @item @var{zero-g-value}
950 A boolean specifying whether to call @code{g-value-zero} before assignment
951 @item @var{g-value-init}
952 A boolean specifying whether to call @code{g-value-init} before assignment
955 Assigns the @code{object} to the @code{gvalue}. When GValue is not used, call @code{g-value-unset} to deinitialize the @code{GValue}.
957 @node Registering types
958 @section Registering types
960 In order to be able to parse GValues and set them, it is necessary for GValue binding to know type mapping between GObject types and Lisp types. Type registration serves to this purpose.
962 GEnum and GFlags are mapped to CFFI @code{defcenum} and @code{defbitfield} types. Functions @code{register-enum-type} and @code{register-flags-type} add the type to the mapping.
965 @code{(register-enum-type name type)}
968 A string naming the GEnum type
970 A symbol - name of CFFI foreign enum type
973 Registers the @code{type} to be used for passing value of GEnum type @code{name} between GObject and Lisp.
977 (defcenum text-direction
979 (register-enum-type "GtkTextDirection" 'text-direction)
983 @code{(register-flags-type name type)}
986 A string naming the GFlags type
988 A symbol - name of CFFI foreign flags type
991 Registers the @code{type} to be used for passing value of GFlags type @code{name} between GObject and Lisp.
996 :normal :active :prelight :selected :insensitive)
997 (register-enum-type "GtkStateType" 'state-type)
1000 @node Stable pointers
1001 @chapter Stable pointers
1003 * allocate-stable-pointer::
1004 * free-stable-pointer::
1005 * stable-pointer-value::
1006 * with-stable-pointer::
1009 Sometimes it is necessary to pass arbitrary Lisp object to C code and then receive it back. Stable pointer serve to this purpose. Stable pointer is an integer (that is passed to C code as a @code{void*} pointer) that is created on Lisp side by call to @code{allocate-stable-pointer} and can be dereferenced by Lisp side at any time by calling @code{stable-pointer-value}. Stable pointer exists and does not change its value until explicitly freed by calling @code{free-stable-poitner}. Convenience macro @code{with-stable-pointer} binds the stable pointer for the duration of its body.
1011 @node allocate-stable-pointer
1012 @section allocate-stable-pointer
1014 @code{(allocate-stable-pointer thing) @result{} stable-pointer}
1018 An arbitrary Lisp object
1019 @item @var{stable-pointer}
1023 Allocates a stable pointer to @code{thing}.
1025 (Note: @var{stable-pointer} should not be dereferenced with @code{cffi:mem-ref}. It should only be dereferenced with @code{stable-pointer-value})
1029 (allocate-stable-pointer (lambda (x) (+ x 10)))
1031 #.(SB-SYS:INT-SAP #X00000002)
1033 (stable-pointer-value *)
1035 #<FUNCTION (LAMBDA (X)) @{1004D016F9@}>
1037 (free-stable-pointer **)
1042 @node free-stable-pointer
1043 @section free-stable-pointer
1045 @code{(free-stable-pointer stable-pointer)}
1048 @item @var{stable-pointer}
1049 A foreign pointer that was created with @code{allocate-stable-pointer}.
1052 Frees the stable pointer, enabling the garbage collector to reclaim the object.
1056 (allocate-stable-pointer (lambda (x) (+ x 10)))
1058 #.(SB-SYS:INT-SAP #X00000002)
1060 (stable-pointer-value *)
1062 #<FUNCTION (LAMBDA (X)) @{1004D016F9@}>
1064 (free-stable-pointer **)
1069 @node stable-pointer-value
1070 @section stable-pointer-value
1073 (stable-pointer-value stable-pointer) @result{} thing
1074 (setf (stable-pointer-value stable-pointer) thing)
1078 @item @var{stable-pointer}
1079 A foreign pointer created by @code{allocate-stable-pointer}
1084 Dereferences a @code{stable-pointer}, returning the stable pointer value. @code{stable-pointer-value} is a SETFable form, SETFing it sets the stable pointer's value to new value.
1086 @node with-stable-pointer
1087 @section with-stable-pointer
1089 @code{(with-stable-pointer (ptr expr) &body body)}
1093 A variable that will be bound to the stable pointer
1095 An expression that will be evaluated once and its value will be bound to stable pointer's value
1098 Executes the body with the @code{ptr} variable being bound to a stable pointer whose value is determined by @code{expr}.
1102 (with-stable-pointer (ptr (lambda (x) (+ x 10)))
1103 (print (stable-pointer-value ptr)))
1105 #<FUNCTION (LAMBDA (X)) @{1004807E79@}>
1111 Closure are anonymous functions that capture their lexical environment.
1113 GObject supports using closures (as instances of type GClosure) as signal handlers and in some other places where a function is expected. Function @code{create-g-closure} create closure from lisp function. The GClosure is finalized automatically when GObject no longer needs it (e.g., when GClosure is disconnected from signal).
1115 @section create-g-closure
1116 @code{(create-g-closure fn) @result{} closure}
1120 A function that will be called by closure invokation
1122 A foreign pointer to allocated closure
1125 Allocates the closure. The closure is destroyed automatically by GObject.
1129 (create-g-closure (lambda (x) (+ x 10)))
1131 #.(SB-SYS:INT-SAP #X006D7B20)
1134 Example of usage from GObject binding code:
1136 (defun connect-signal (object signal handler &key after)
1137 (g-signal-connect-closure (ensure-object-pointer object)
1139 (create-g-closure handler)
1143 (TODO: GObject defines finer closure API: g_closure_ref, g_closure_unref, g_closure_invoke. It should be bound.)
1145 @node GObject low-level
1146 @chapter GObject low-level
1148 * g-object-call-constructor::
1149 * g-type-from-object::
1150 * g-object-call-get-property::
1151 * g-object-call-set-property::
1154 GObject low-level support includes facilities for working with objects as foreign pointers and using explicit function to get and set properties. This low-level support does not deal with integration of GObject with CLOS; GObject high-level support does that.
1156 Function @code{g-type-from-object} identifies the type of the object. Function @code{g-object-call-get-property} retrieves the value of the property and function @code{g-object-call-set-property} sets the value of the property. Function @code{g-object-call-constructor} calls the constructor of the GObject type.
1158 @node g-object-call-constructor
1159 @section g-object-call-constructor
1161 @code{(g-object-call-constructor object-type args-names args-values &optional args-types) @result{} object-ptr}
1164 @item @var{object-type}
1165 A GType designator that specifies the object type that is to be created
1166 @item @var{args-names}
1167 A list of strings naming the arguments to constructor
1168 @item @var{args-value}
1169 A list of arguments values (in the same order as args-names)
1170 @item @var{args-types}
1171 Optional list of arguments types (in the same order as args-names). If not specified, it is detected automatically
1172 @item @var{object-ptr}
1173 A foreign pointer to newly created instance
1176 Creates the object of type @code{object-type} by calling its constructors with arguments specified by @code{args-names}, @code{args-values}, @code{args-types}.
1180 (g-object-call-constructor "GtkButton" '("label" "use-underline") '("Hello" t) '("gchararray" "gboolean"))
1182 #.(SB-SYS:INT-SAP #X006D8900)
1184 (g-object-call-get-property * "label")
1188 (g-object-call-get-property ** "use-underline")
1193 @node g-type-from-object
1194 @section g-type-from-object
1196 @code{(g-type-from-object object-ptr) @result{} type}
1199 @item @var{object-ptr}
1200 A foreign pointer to a GObject instance
1205 Returns the type of an object by a pointer to its instance
1209 (g-type-from-object (g-object-call-constructor "GtkButton" nil nil))
1214 @node g-object-call-get-property
1215 @section g-object-call-get-property
1217 @code{(g-object-call-get-property object-ptr property-name &optional property-type) @result{} property-value}
1220 @item @var{object-ptr}
1221 A foreign pointer to a GObject instance
1222 @item @var{property-name}
1223 A string naming the property
1224 @item @var{property-type}
1225 Optional GType designator specifying the type of a property
1226 @item @var{property-value}
1227 The value of a property
1230 Retrieves the value of a property @code{property-name} of object pointed to by @code{object-ptr}. @code{property-type} specifies the type of a property; it may be omitted.
1234 (g-object-call-constructor "GtkButton" '("label" "use-underline") '("Hello" t) '("gchararray" "gboolean"))
1236 #.(SB-SYS:INT-SAP #X006D8900)
1238 (g-object-call-get-property * "label")
1242 (g-object-call-get-property ** "use-underline")
1247 @node g-object-call-set-property
1248 @section g-object-call-set-property
1250 @code{(g-object-call-set-property object-ptr property-name new-value &optional property-type)}
1253 @item @var{object-ptr}
1254 A foreign pointer to a GObject instance
1255 @item @var{property-name}
1256 A string naming the property
1257 @item @var{new-value}
1258 A new value of a property
1259 @item @var{property-type}
1260 Optional GType designator specifying the type of a property
1263 Sets the property value of property @code{property-name} of object @code{object-ptr} to @code{new-value}.
1267 (g-object-call-constructor "GtkButton" nil nil)
1269 #.(SB-SYS:INT-SAP #X006D8B40)
1271 (g-object-call-set-property * "label" "Hello")
1275 (g-object-call-get-property ** "label")
1280 @node GObject high-level
1281 @chapter GObject high-level
1283 * GObject metaclass::
1286 * GObject foreign class::
1289 GObject high-level support includes integration of GObject and CLOS systems. This enables to use GObjects classes as CLOS classes (with support from @code{gobject-class} metaclass):
1291 @item objects are created with @code{make-instance}
1292 @item properties are used as regular slots
1295 GObjects are reference counted, and CL-GTK2-GOBJECT manages its own reference to GObjects. This enables to have transparent garbage collection of unreferenced GObjects.
1297 To be able to use particular GObject class with CLOS, it should be defined and registered. This is accomplished by @code{defclass}'ing it with @code{gobject-class} metaclass. After GObject class is defined, it may be used as CLOS class.
1299 Example GObject class of definition:
1301 (defclass dialog (gtk-window atk-implementor-iface buildable)
1302 ((has-separator :accessor dialog-has-separator
1303 :initarg :has-separator
1304 :allocation :gobject-property
1305 :g-property-type "gboolean"
1306 :g-property-name "has-separator"))
1307 (:metaclass gobject-class)
1308 (:g-type-name . "GtkDialog")
1309 (:g-type-initializer . "gtk_dialog_get_type"))
1312 This example defines the CLOS class @code{dialog} that corresponds to GObject class @code{GtkDialog}. Whenever object of GObject type @code{GtkDialog} are to be received from foreign functions or passed to foreign functions, it will be mapped to CLOS class @code{dialog}. Properties that have @code{:allocation} of @code{:gobject-property} are mapped to GObject properties, and reading or writing this slot reads or writes corresponding GObject class property.
1314 GObject does not expose objects methods. Because of this, methods are not automatically mapped to CLOS generic functions and methods. Methods should be manually wrapped with CFFI as foreign functions. Foreign type @code{g-object} aids in it. This type automatically wraps (and unwraps) the GObject class instances and handles the reference counting.
1316 GObject high-level support enables connect signals to signal handlers. Any function may be connected as a signal handler, and GObject will release the reference on signal handler whenever it become unneded (e.g., when object is destroyed or handler is disconnected).
1318 @node GObject metaclass
1319 @section GObject metaclass
1321 See MOP for information what metaclass is and why is it useful.
1323 GObject metaclass @code{gobject-class} bridges two object systems: GObject and CLOS.
1325 Classes that correspond to GObject classes are instances of this class.
1327 Defining the class with metaclass @code{gobject-class} registers the type @code{:g-type-name} for conversions using GValue and CFFI foreign type @code{g-object}.
1329 This class has the following slots:
1331 @item @var{g-type-name} (accessor @code{gobject-class-g-type-name}, initarg @code{:g-type-name})
1333 Specifies the name of GObject class
1334 @item @var{g-type-initializer} (accessor @code{gobject-class-g-type-initializer}, initarg @code{:g-type-initializer})
1336 Name of type initializer function. This function initializes the class and returns its GType. Typically it is named @code{class_get_type}.
1337 @item @var{interface-p} (accessor @code{gobject-class-interface-p}, initarg @code{:interface-p})
1339 A boolean specifying whether this CLOS class corresponds to GInterface.
1342 This metaclass defines the GObject classes.
1344 Slots which have @code{:allocation} of @code{:gobject-property} are mapped to GObject properties. Such slots have following attributes:
1346 @item @var{:g-property-type}
1348 A string naming GType of property
1349 @item @var{:g-property-name}
1351 A name of a property
1354 Slots which have @code{:allocation} of @code{:gobject-fn} are mapped to a pair of accessor functions (usually named @code{class_get_property} and @code{class_set_property}). This is included because some properties are not exposed as GObject properties. Such slots have following attributes:
1356 @item @var{:g-property-type}
1357 A CFFI foreign type of property
1358 @item @var{:g-getter}
1359 A string naming foreign getter function of a property or a symbol designating Lisp getter function. Foreign getter function should have signature @code{type class_get_property(object *)}. Lisp function should be of type @code{(function (class) type)}.
1360 @item @var{:g-setter}
1361 A string naming foreign setter function of a property or a symbol designating Lisp setter function. Foreign setter function should have signature @code{void class_set_property(object *, type)}. Lisp function should be of type @code{(function (class type))}.
1364 Initargs of a slot are used to construct the GObject class.
1368 (defclass container (widget atk-implementor-iface buildable)
1369 ((border-width :allocation :gobject-property
1370 :g-property-type "guint"
1371 :accessor container-border-width
1372 :initarg :border-width
1373 :g-property-name "border-width")
1374 (resize-mode :allocation :gobject-property
1375 :g-property-type "GtkResizeMode"
1376 :accessor container-resize-mode
1377 :initarg :resize-mode
1378 :g-property-name "resize-mode")
1379 (child :allocation :gobject-property
1380 :g-property-type "GtkWidget"
1381 :accessor container-child
1383 :g-property-name "child")
1384 (focus-child :allocation :gobject-fn
1385 :g-property-type g-object
1386 :accessor container-focus-child
1387 :initarg :focus-child
1388 :g-getter "gtk_container_get_focus_child"
1389 :g-setter "gtk_container_set_focus_child")
1390 (focus-vadjustment :allocation :gobject-fn
1391 :g-property-type (g-object adjustment)
1392 :accessor container-focus-vadjustment
1393 :initarg :focus-vadjustment
1394 :g-getter "gtk_container_get_focus_vadjustment"
1395 :g-setter "gtk_container_set_focus_vadjustment")
1396 (focus-hadjustment :allocation :gobject-fn
1397 :g-property-type (g-object adjustment)
1398 :accessor container-focus-hadjustment
1399 :initarg :focus-hadjustment
1400 :g-getter "gtk_container_get_focus_hadjustment"
1401 :g-setter "gtk_container_set_focus_hadjustment"))
1402 (:metaclass gobject-class)
1403 (:g-type-name . "GtkContainer")
1404 (:g-type-initializer . "gtk_container_get_type"))
1406 (note the dot in @code{(:g-type-name . "GtkContainer")} and in @code{(:g-type-initializer . "gtk_container_get_type")}. It should be present)
1409 @section Using objects
1410 Instances are created with @code{make-instance}. If initargs of GObject properties are supplied, they are passed to constructor. Some slots (properties) may only be set at construction time (e.g., @code{type} property of @code{GtkWindow}). Properties may be accessed (read or assigned) with defined @code{:accessor}, @code{:reader} or @code{:writer} functions.
1414 (make-instance 'gtk:dialog :has-separator t)
1416 #<GTK:DIALOG @{10036C5A71@}>
1418 (defvar *d* (make-instance 'gtk:dialog :has-separator t))
1422 (gtk:dialog-has-separator *d*)
1426 (setf (gtk:dialog-has-separator *d*) nil)
1430 (gtk:dialog-has-separator *d*)
1438 To connect handler to a signal, @code{connect-signal} function is used.
1440 @code{(connect-signal object signal handler &key after)}
1444 An instance of GObject object
1450 A boolean specifying whether the handler should be called after the default handler
1453 Connects the @code{handler} to signal @code{signal} on object @code{object}. Signature of @code{handler} should comply with signature of a signal. @code{handler} will be called with arguments of type specified by signal with the object (on which the signal was emitted) prepended to them and it should return the value of the signal's return type.
1457 (defvar *d* (make-instance 'gtk:dialog))
1463 #<GTK:DIALOG @{1002D866F1@}>
1465 (parse-signal-name "GtkDialog" "response")
1467 #<Signal [#86] void GtkDialog.response(gint) [RUN-LAST]>
1469 (connect-signal *d* "response" (lambda (dialog response-value) (print dialog) (print response-value)))
1471 (emit-signal *d* "response" 14)
1474 #<GTK:DIALOG @{1002D866F1@}>
1478 Function @code{emit-signal} is used to emit signals on objects.
1480 @code{(emit-signal object signal-name &rest args) @result{} return-value}
1484 An object on which the signal should be emitted
1485 @item @var{signal-name}
1486 A string naming the signal
1488 Arguments for a signal
1489 @item @var{return-value}
1490 Return value of a signal
1493 Emits the signal and calls all handlers of the signal. If signal returns a value, it is returned from @code{emit-signal}.
1497 (defvar *d* (make-instance 'gtk:dialog))
1503 #<GTK:DIALOG @{1002D866F1@}>
1505 (parse-signal-name "GtkDialog" "response")
1507 #<Signal [#86] void GtkDialog.response(gint) [RUN-LAST]>
1509 (connect-signal *d* "response" (lambda (dialog response-value) (print dialog) (print response-value)))
1511 (emit-signal *d* "response" 14)
1514 #<GTK:DIALOG @{1002D866F1@}>
1518 @node GObject foreign class
1519 @section GObject foreign class
1521 To enable passing GObject instance between Lisp code and foreign code, @code{g-object} foreign type is introduced.
1523 This type has the following syntax:
1524 @code{(g-object &optional type)} or @code{g-object}.
1526 When the @code{g-object} foreign type is specified as a return type of a function, the value is converted to instance of corresponding CLOS class. If @code{type} is specified then it is checked that object is of this type.
1528 When the @code{g-object} foreign type is specified as a type of function's argument, the value is converted to pointer to GObject. If @code{type} is specified then it is checked that the object is of this type.
1530 This defines the function that may be called with instances of types @code{container} and @code{widget}:
1532 (defcfun (container-add "gtk_container_add") :void
1533 (container (g-object container))
1534 (widget (g-object widget)))
1536 (let ((window (make-instance 'gtk-window))
1537 (widget (make-instance 'button)))
1538 (container-add window widget))
1540 (@code{gtk-window} is a subclass of @code{container}; @code{button} is a subclass of @code{widget})
1542 This defines the function that returns an instance of GObject class:
1544 (defcfun (bin-child "gtk_bin_get_child") (g-object widget)
1545 (bin (g-object bin)))
1547 (let ((window (make-instance 'gtk-window))
1548 (widget (make-instance 'button)))
1549 (container-add window widget)
1552 #<GTK:BUTTON @{1002DE74B1@}>
1555 @node Subclassing GObjects and implementing GInterfaces
1556 @chapter Subclassing GObjects and implementing GInterfaces
1561 * define-g-boxed-class::
1562 * define-g-boxed-ref::
1565 GObject manual defines this type in the following way:
1567 ``GBoxed is a generic wrapper mechanism for arbitrary C structures. The only thing the type system needs to know about the structures is how to copy and free them, beyond that they are treated as opaque chunks of memory.
1569 Boxed types are useful for simple value-holder structures like rectangles or points. They can also be used for wrapping structures defined in non-GObject based libraries.''
1571 Naturally, it is quite hard to provide support for such structures. At the moment, support for GBoxed is pretty bad.
1573 Basically, two use cases of GBoxed structures are provided:
1575 @item structure is mapped to Lisp structure defined with @code{defstruct}. This is complex scenario and it supports inheritance between structure. Its main use is to define the @code{GdkEvent} structure wrapper. Macro @code{define-g-boxed-class} supports this use case.
1576 @item structure is mapped to Lisp wrapper that contains pointer to structure and provides accessor functions (by calling foreign function or calling Lisp function). Macro @code{define-g-boxed-ref} supports this use case.
1579 In both scenarios, foreign functions and GValue type registrations are provided that provide wrapping and unwrapping behaivour (it yet remains to be proven that the behaviour is correct in all cases with regard to issues of memory management, ownership, lifetime). In both cases it is possible to pass the structure by reference, allowing the foreign function (or the callback code) to change the contents of GBoxed.
1581 It is expected that the support for GBoxed structures will be improved.
1583 @node define-g-boxed-class
1584 @section define-g-boxed-class
1587 (define-g-boxed-class g-name-and-c-name name (&optional superclass-and-dispatch (export t))
1590 g-name-and-c-name ::= nil
1591 g-name-and-c-name ::= (g-name c-name)
1592 superclass-and-dispatch ::= (&optional superclass dispatch-slot dispatch-values)
1593 slot ::= slot-name slot-type &key initform parser unparser
1598 A string naming the type of this GBoxed; for inherited classes, it should be @code{NIL}
1600 A symbol naming the generated CFFI foreign structure definition corresponding to this GBoxed. This name should not conflict with other CFFI types.
1602 A symbol naming the Lisp structure that will be generated
1603 @item @var{superclass}
1604 A symbol naming the structure defined with @code{define-g-boxed-class} that is the superclass of this structure
1605 @item @var{dispatch-slot}
1606 A slot of the superclass structure that identifies the specific type of structure (``discriminator'')
1607 @item @var{dispatch-values}
1608 A value or a list of values of the @code{dispatch-slot} that correspond to this GBoxed class
1609 @item @var{slot-name}
1611 @item @var{slot-type}
1612 CFFI foreign type of a slot
1613 @item @var{initform}
1614 An optional initform for @code{defstruct} slot
1616 An optional parser function designator for slot. Parser function is called to get the value for slot when the GBoxed is passed to Lisp with the following arguments: @code{(name pointer)} where the @code{name} is the name of a structure being defined and the @code{pointer} is a foreign pointer to the C structure.
1617 @item @var{unparser}
1618 An optional unparser function designator for a slot. Unparser function is called to write the slot value to GBoxed structure. It is called with arguments @code{(name pointer object)} where @code{name} is the name of a structure being defined, @code{pointer} is the pointer to the C structure and the @code{object} is object whose slot value should be written to structure.
1621 Defines the @code{defstruct} wrapper for GBoxed type. Various parameters control how the structure is converted between C and Lisp representations.
1623 @code{define-g-boxed-class} supports basic single inheritance. This is provided to support ``generic'' C structures like @code{GdkEvent} that contain a ``type'' field and a @code{union} of other substructures. The natural mapping of such structure to Lisp is not one, but several structures that are inherited one from another. This supports e.g. method dispatching on @code{GdkEvent} types (if it is ever necessary).
1625 The only use of @code{define-g-boxed-class} that involves inheritance is the @code{GdkEvent} structure. It is defined as follows.
1627 (define-g-boxed-class ("GdkEvent" event-struct) event ()
1629 (window (g-object gdk-window))
1630 (send-event (:boolean :int8)))
1632 (define-g-boxed-class nil event-key ((event type (:key-press :key-release)))
1634 (state modifier-type)
1637 (string (:string :free-from-foreign nil :free-to-foreign nil))
1638 (hardware-keycode :uint16)
1640 (is-modifier :uint))
1642 (define-g-boxed-class nil event-button ((event type (:button-press :2button-press :3button-press :button-release)))
1646 (axes (fixed-array :double 2))
1649 (device (g-object device))
1654 Some simpler uses include following examples:
1656 (define-g-boxed-class "GdkFont" font ()
1657 (type font-type :initform :font)
1658 (ascent :int :initform 0)
1659 (descent :int :initform 0))
1661 (define-g-boxed-class "GdkColor" color ()
1662 (pixel :uint32 :initform 0)
1663 (red :uint16 :initform 0)
1664 (green :uint16 :initform 0)
1665 (blue :uint16 :initform 0))
1667 (define-g-boxed-class "GdkGeometry" geometry ()
1668 (min-width :int :initform 0)
1669 (min-height :int :initform 0)
1670 (max-width :int :initform 0)
1671 (max-height :int :initform 0)
1672 (base-width :int :initform 0)
1673 (base-height :int :initform 0)
1674 (width-increment :int :initform 0)
1675 (height-increment :int :initform 0)
1676 (min-aspect :double :initform 0.0d0)
1677 (max-aspect :double :initform 0.0d0)
1678 (gravity gravity :initform :north-west))
1681 @node define-g-boxed-ref
1682 @section define-g-boxed-ref
1684 @code{g-boxed-ref} class is defined:
1686 (defclass g-boxed-ref ()
1687 ((pointer :accessor pointer :initarg :pointer)))
1690 This class holds the pointer to structure. GBoxed-ref types are subclasses of this class.
1693 (define-g-boxed-ref g-name name
1696 property ::= (:free-function free-function)
1697 property ::= (:alloc-function alloc-function)
1698 property ::= (:slots &rest slot*)
1699 slot ::= (slot-name &key reader writer type (accessor slot-name))
1704 A string that names the GBoxed type
1706 A symbol that is the name for generated class
1707 @item @var{free-function}
1708 Mandatory designator for a function that frees the allocated object. This function accepts a single argument - CFFI foreign pointer.
1709 @item @var{alloc-function}
1710 Mandatory designator for a function that allocates the object. This function accepts zero arguments and returns CFFI foreign pointer to fresh object.
1711 @item @var{slot-name}
1712 A symbol naming the slot
1714 A CFFI foreign type of a slot
1716 @code{NIL} or a string or a function designator. If it is @code{NIL} the the slot is not readable. If it is a string then it names the C function that accepts the pointer to structure and returns the value of a slot of specified CFFI type. If it is a function designator that it designates a function that accepts the Lisp object and returns its slot value.
1718 @code{NIL} or string or a function designator. If it is a @code{NIL} then the slot is not writable. If it is a string then it names the C function that accepts the pointer to C structure and a value (of specified CFFI type) and assigns it to the slot of a structure. If it is a function designator then it specifies a function that accepts the new slot value and a Lisp object and assigns it to the slot.
1719 @item @var{accessor}
1720 A symbol namin the accessor function for slot.
1723 Defines a class corresponding to GBoxed type that is passed by reference (e.g., @code{GtkTextIter}). Class is made a subclass of @code{g-boxed-ref}.
1725 The memory occupied by this class is managed automatically: after the GC collects the Lisp instance, @code{free-function} is used to free the structure.
1729 (defcstruct tree-iter
1731 (user-data :pointer)
1732 (user-data-2 :pointer)
1733 (user-data-3 :pointer))
1735 (defun tree-iter-get-stamp (i) (foreign-slot-value (pointer i) 'tree-iter 'stamp))
1736 (defun tree-iter-set-stamp (value i) (setf (foreign-slot-value (pointer i) 'tree-iter 'stamp) value))
1737 (defun tree-iter-get-user-data (i) (pointer-address (foreign-slot-value (pointer i) 'tree-iter 'user-data)))
1738 (defun tree-iter-set-user-data (value i) (setf (foreign-slot-value (pointer i) 'tree-iter 'user-data) (make-pointer value)))
1740 (defun tree-iter-alloc () (glib:g-malloc (foreign-type-size 'tree-iter)))
1741 (defun tree-iter-free (v) (glib:g-free v))
1743 (define-g-boxed-ref "GtkTreeIter" tree-iter
1744 (:slots (stamp :reader tree-iter-get-stamp :writer tree-iter-set-stamp :accessor tree-iter-stamp)
1745 (user-data :reader tree-iter-get-user-data :writer tree-iter-set-user-data :accessor tree-iter-user-data))
1746 (:alloc-function tree-iter-alloc)
1747 (:free-function tree-iter-free))
1752 (define-foreign-type unichar ()
1754 (:actual-type :uint32)
1755 (:simple-parser unichar))
1757 (defmethod translate-from-foreign (value (type unichar))
1760 (defmethod translate-to-foreign (value (type unichar))
1763 (define-g-boxed-ref "GtkTextIter" text-iter
1764 (:free-function gtk-text-iter-free)
1765 (:alloc-function gtk-text-iter-alloc)
1766 (:slots (text-iter-buffer :reader "gtk_text_iter_get_buffer" :type (g-object text-buffer))
1767 (text-iter-offset :reader "gtk_text_iter_get_offset" :writer "gtk_text_iter_set_offset" :type :int)
1768 (text-iter-line :reader "gtk_text_iter_get_line" :writer "gtk_text_iter_set_line" :type :int)
1769 (text-iter-line-offset :reader "gtk_text_iter_get_line_offset" :writer "gtk_text_iter_set_line_offset" :type :int)
1770 (text-iter-visible-line-offset :reader "gtk_text_iter_get_visible_line_offset" :writer "gtk_text_iter_set_visible_line_offset" :type :int)
1771 (text-iter-char :reader "gtk_text_iter_get_char" :type unichar)
1772 (text-iter-pixbuf :reader "gtk_text_iter_get_pixbuf" :type (g-object pixbuf))
1773 (text-iter-marks :reader "gtk_text_iter_get_marks" :type (gslist (g-object text-mark) :free-from-foreign t))
1774 (text-iter-child-anchor :reader "gtk_text_iter_get_child_anchor" :type (g-object text-child-anchor))
1775 (text-iter-tags :reader "gtk_text_iter_get_tags" :type (gslist (g-object text-tag) :free-from-foreign t))
1776 (text-iter-chars-in-line :reader "gtk_text_iter_get_chars_in_line" :type :int)
1777 (text-iter-language :reader "gtk_text_iter_get_language" :type :pointer)
1778 (text-iter-is-end :reader "gtk_text_iter_is_end" :type :boolean)
1779 (text-iter-is-start :reader "gtk_text_iter_is_start" :type :boolean)
1780 (text-iter-can-insert :reader "gtk_text_iter_can_insert" :type :boolean)
1781 (text-iter-starts-word :reader "gtk_text_iter_starts_word" :type :boolean)
1782 (text-iter-ends-word :reader "gtk_text_iter_ends_word" :type :boolean)
1783 (text-iter-inside-word :reader "gtk_text_iter_inside_word" :type :boolean)
1784 (text-iter-starts-line :reader "gtk_text_iter_starts_line" :type :boolean)
1785 (text-iter-ends-line :reader "gtk_text_iter_ends_line" :type :boolean)
1786 (text-iter-starts-sentence :reader "gtk_text_iter_starts_sentence" :type :boolean)
1787 (text-iter-ends-sentence :reader "gtk_text_iter_ends_sentence" :type :boolean)
1788 (text-iter-inside-sentence :reader "gtk_text_iter_inside_sentence" :type :boolean)
1789 (text-iter-is-cursor-position :reader "gtk_text_iter_is_cursor_position" :type :boolean)))
1791 (defcstruct %text-iter
1807 (defcfun gtk-text-iter-copy :pointer
1810 (defcfun gtk-text-iter-free :void
1813 (defun gtk-text-iter-alloc ()
1814 (with-foreign-object (iter '%text-iter)
1815 (gtk-text-iter-copy iter)))
1818 @node Generating type definitions by introspection
1819 @chapter Generating type definitions by introspection
1821 * define-g-object-class::
1822 * define-g-interface::
1825 * get-g-enum-definition::
1826 * get-g-flags-definition::
1827 * get-g-interface-definition::
1828 * get-g-class-definition::
1829 * Specifying additional properties for CLOS classes::
1830 * Generating names for CLOS classes and accessors::
1831 * generate-types-hierarchy-to-file::
1834 CL-GTK2-GOBJECT includes facilities for automatically generating parts of bindings for libraries that use GObject type system.
1836 @node define-g-object-class
1837 @section define-g-object-class
1840 (define-g-object-class g-type-name name
1841 (&key (superclass 'g-object) (export t) interfaces type-initializer)
1844 property ::= (name accessor gname type readable writable)
1845 property ::= (:cffi name acessor type reader writer)
1848 Parameters of @code{define-g-object-class}
1850 @item @var{superclass}
1851 A symbol naming the superclass of this class
1853 Whether to export the name of the class and names of autogenerated properties names from the current package.
1854 @item @var{interfaces}
1855 A list of interfaces the this class implements
1856 @item @var{type-initializer}
1857 A string naming the type initiliazer function. It is usually named @code{class_get_type}.
1858 @item @var{properties}
1859 A list of slots of a class
1862 Parameters of @code{property}:
1865 A symbol naming the slot
1866 @item @var{accessor}
1867 A symbol naming the accessor function for this slot
1869 A string naming the property of GObject
1871 A string naming the type of property of GObject (for GObject properties); or a symbol naming CFFI foreign type (for slots mapped to foreign accessors)
1872 @item @var{readable}
1873 A boolean specifying whether the slot can be read
1874 @item @var{writable}
1875 A boolean specifying whether the slot can be assigned to
1877 A string or a symbol naming getter function. See description of @code{gobject-class} metaclass for information.
1879 A string or a symbol naming setter function. See description of @code{gobject-class} metaclass for information.
1882 Macro that expands to @code{defclass} for specified class. Additionally, if @code{export} is true, it exports accessor names and name of a class.
1886 (define-g-object-class "GtkContainer" container
1887 (:superclass widget :export t :interfaces
1888 ("AtkImplementorIface" "GtkBuildable")
1889 :type-initializer "gtk_container_get_type")
1890 ((border-width container-border-width "border-width" "guint" t t)
1891 (resize-mode container-resize-mode "resize-mode" "GtkResizeMode" t t)
1892 (child container-child "child" "GtkWidget" nil t)
1893 (:cffi focus-child container-focus-child g-object "gtk_container_get_focus_child" "gtk_container_set_focus_child")
1894 (:cffi focus-vadjustment container-focus-vadjustment (g-object adjustment) "gtk_container_get_focus_vadjustment" "gtk_container_set_focus_vadjustment")
1895 (:cffi focus-hadjustment container-focus-hadjustment (g-object adjustment) "gtk_container_get_focus_hadjustment" "gtk_container_set_focus_hadjustment")))
1898 @node define-g-interface
1899 @section define-g-interface
1902 (define-g-interface g-type-name name (&key (export t) type-initializer)
1905 property ::= (name accessor gname type readable writable)
1906 property ::= (:cffi name acessor type reader writer)
1909 Parameters of @code{define-g-interface}
1912 Whether to export the name of the interface and names of autogenerated properties names from the current package.
1913 @item @var{type-initializer}
1914 A string naming the type initiliazer function. It is usually named @code{interface_get_type}.
1915 @item @var{properties}
1916 A list of slots of a interface
1919 Parameters of @code{property}:
1922 A symbol naming the slot
1923 @item @var{accessor}
1924 A symbol naming the accessor function for this slot
1926 A string naming the property of GObject
1928 A string naming the type of property of GObject (for GObject properties); or a symbol naming CFFI foreign type (for slots mapped to foreign accessors)
1929 @item @var{readable}
1930 A boolean specifying whether the slot can be read
1931 @item @var{writable}
1932 A boolean specifying whether the slot can be assigned to
1934 A string or a symbol naming getter function. See description of @code{gobject-class} metaclass for information.
1936 A string or a symbol naming setter function. See description of @code{gobject-class} metaclass for information.
1939 Macro that expands to @code{defclass} for specified interface. Additionally, if @code{export} is true, it exports accessor names and name of a interface.
1943 (define-g-interface "GtkFileChooser" file-chooser
1944 (:export t :type-initializer "gtk_file_chooser_get_type")
1945 (do-overwrite-confirmation file-chooser-do-overwrite-confirmation "do-overwrite-confirmation" "gboolean" t t)
1946 (select-multiple file-chooser-select-multiple "select-multiple" "gboolean" t t)
1947 (filter file-chooser-filter "filter" "GtkFileFilter" t t)
1948 (local-only file-chooser-local-only "local-only" "gboolean" t t)
1949 (preview-widget file-chooser-preview-widget "preview-widget" "GtkWidget" t t)
1950 (use-preview-label file-chooser-use-preview-label "use-preview-label" "gboolean" t t)
1951 (preview-widget-active file-chooser-preview-widget-active "preview-widget-active" "gboolean" t t)
1952 (file-system-backend file-chooser-file-system-backend "file-system-backend" "gchararray" nil nil)
1953 (extra-widget file-chooser-extra-widget "extra-widget" "GtkWidget" t t)
1954 (show-hidden file-chooser-show-hidden "show-hidden" "gboolean" t t)
1955 (action file-chooser-action "action" "GtkFileChooserAction" t t)
1956 (:cffi current-name file-chooser-current-name
1957 (:string :free-to-foreign t :encoding :utf-8) nil "gtk_file_chooser_set_current_name")
1958 (:cffi filename file-chooser-filename
1959 (g-string :free-from-foreign t :free-to-foreign t)
1960 "gtk_file_chooser_get_filename" "gtk_file_chooser_set_filename")
1961 (:cffi current-folder file-chooser-current-folder
1962 (g-string :free-from-foreign t :free-to-foreign t)
1963 "gtk_file_chooser_get_current_folder"
1964 "gtk_file_chooser_set_current_folder")
1965 (:cffi uri file-chooser-uri
1966 (g-string :free-from-foreign t :free-to-foreign t)
1967 "gtk_file_chooser_get_uri" "gtk_file_chooser_set_uri")
1968 (:cffi current-folder-uri file-chooser-current-folder-uri
1969 (g-string :free-from-foreign t :free-to-foreign t)
1970 "gtk_file_chooser_get_current_folder_uri"
1971 "gtk_file_chooser_set_current_folder_uri")
1972 (:cffi preview-filename file-chooser-preview-filename
1973 (g-string :free-from-foreign t :free-to-foreign t)
1974 "gtk_file_chooser_get_preview_filename" nil)
1975 (:cffi preview-uri file-chooser-preview-uri
1976 (g-string :free-from-foreign t :free-to-foreign t)
1977 "gtk_file_chooser_get_preview_uri" nil))
1981 @section define-g-enum
1984 (define-g-enum g-name name (&key (export t) type-initializer) &body value*)
1987 value ::= (:keyword integer)
1992 A string naming the GEnum type
1994 A symbol naming the CFFI enumeration type
1996 A boolean indicating whether to export @code{name}
1997 @item @var{type-initializer}
1998 A string naming the foreign type initializer function. Usually named @code{enum_get_type}.
2001 Macro that defines CFFI enumeration, registers it with GValue, and calls the type initializer.
2005 (define-g-enum "GtkTextDirection" text-direction
2006 (:export t :type-initializer "gtk_text_direction_get_type")
2007 (:none 0) (:ltr 1) (:rtl 2))
2009 (define-g-enum "GtkSizeGroupMode" size-group-mode
2010 (:export t :type-initializer "gtk_size_group_mode_get_type")
2011 :none :horizontal :vertical :both)
2014 @node define-g-flags
2015 @section define-g-flags
2018 (define-g-flags g-name name (&key (export t) type-initializer) &body value*)
2021 value ::= (:keyword integer)
2026 A string naming the GFlags type
2028 A symbol naming the CFFI flags type
2030 A boolean indicating whether to export @code{name}
2031 @item @var{type-initializer}
2032 A string naming the foreign type initializer function. Usually named @code{flags_get_type}.
2035 Macro that defines CFFI bitfield, registers it with GValue, and calls the type initializer.
2039 (define-g-flags "GtkAttachOptions" attach-options
2040 (:export t :type-initializer "gtk_attach_options_get_type")
2041 (:expand 1) (:shrink 2) (:fill 4))
2043 (define-g-flags "GtkButtonAction" button-action
2044 (:export t :type-initializer "gtk_button_action_get_type")
2045 :ignored :selects :drags :expands)
2048 @node get-g-enum-definition
2049 @section get-g-enum-definition
2051 @code{(get-g-enum-definition type &optional lisp-name-package) @result{} definition}
2055 A string naming the GEnum type
2056 @item @var{lisp-name-package}
2057 A package that will be used as a package for generated symbols (enum name). If not specified, symbols are interned in @code{*package*}
2058 @item @var{definition}
2059 A Lisp form that when evaluated defines the GEnum.
2062 Uses GObject introspection capabilities to automatically produce the definition of GEnum. The foreign library that defines the enum type should be loaded.
2064 See @ref{Generating names for CLOS classes and accessors} for information about used method for generating names.
2068 (get-g-enum-definition "GtkDirectionType")
2070 (DEFINE-G-ENUM "GtkDirectionType" GTK-DIRECTION-TYPE
2071 (:EXPORT T :TYPE-INITIALIZER "gtk_direction_type_get_type")
2072 (:TAB-FORWARD 0) (:TAB-BACKWARD 1) (:UP 2) (:DOWN 3) (:LEFT 4)
2076 @node get-g-flags-definition
2077 @section get-g-flags-definition
2079 @code{(get-g-flags-definition type &optional lisp-name-package) @result{} definition}
2083 A string naming the GFlags type
2084 @item @var{lisp-name-package}
2085 A package that will be used as a package for generated symbols (flags name). If not specified, symbols are interned in @code{*package*}
2086 @item @var{definition}
2087 A Lisp form that when evaluated defines the GFlags.
2090 Uses GObject introspection capabilities to automatically produce the definition of GFlags. The foreign library that defines the flags type should be loaded.
2092 See @ref{Generating names for CLOS classes and accessors} for information about used method for generating names.
2096 (get-g-flags-definition "GtkCalendarDisplayOptions")
2098 (DEFINE-G-FLAGS "GtkCalendarDisplayOptions" GTK-CALENDAR-DISPLAY-OPTIONS
2099 (:EXPORT T :TYPE-INITIALIZER
2100 "gtk_calendar_display_options_get_type")
2101 (:SHOW-HEADING 1) (:SHOW-DAY-NAMES 2) (:NO-MONTH-CHANGE 4)
2102 (:SHOW-WEEK-NUMBERS 8) (:WEEK-START-MONDAY 16)
2106 @node get-g-interface-definition
2107 @section get-g-interface-definition
2109 @code{get-g-interface-definition type &optional lisp-name-package) @result{} definition}
2113 A string naming the GInterface type
2114 @item @var{lisp-name-package}
2115 A package that will be used as a package for generated symbols (type name, accessor names). If not specified, symbols are interned in @code{*package*}
2116 @item @var{definition}
2117 A Lisp form that when evaluated defines the GInterface.
2120 Uses GObject introspection capabilities to automatically produce the definition of GInterface. The foreign library that defines the GInterface type should be loaded.
2122 See @ref{Generating names for CLOS classes and accessors} for information about used method for generating names.
2126 (get-g-interface-definition "GtkActivatable")
2128 (DEFINE-G-INTERFACE "GtkActivatable" GTK-ACTIVATABLE
2129 (:EXPORT T :TYPE-INITIALIZER "gtk_activatable_get_type")
2130 (USE-ACTION-APPEARANCE
2131 GTK-ACTIVATABLE-USE-ACTION-APPEARANCE
2132 "use-action-appearance" "gboolean" T T)
2133 (RELATED-ACTION GTK-ACTIVATABLE-RELATED-ACTION
2134 "related-action" "GtkAction" T T))
2137 @node get-g-class-definition
2138 @section get-g-class-definition
2141 @code{get-g-class-definition type &optional lisp-name-package) @result{} definition}
2145 A string naming the GObject type
2146 @item @var{lisp-name-package}
2147 A package that will be used as a package for generated symbols (type name, accessor names). If not specified, symbols are interned in @code{*package*}
2148 @item @var{definition}
2149 A Lisp form that when evaluated defines the GObject.
2152 Uses GObject introspection capabilities to automatically produce the definition of GClass. The foreign library that defines the GObject type should be loaded.
2154 See @ref{Generating names for CLOS classes and accessors} for information about used method for generating names.
2158 (get-g-class-definition "GtkButton")
2160 (DEFINE-G-OBJECT-CLASS "GtkButton" GTK-BUTTON
2161 (:SUPERCLASS GTK-BIN :EXPORT T :INTERFACES
2162 ("AtkImplementorIface" "GtkActivatable" "GtkBuildable")
2163 :TYPE-INITIALIZER "gtk_button_get_type")
2164 ((LABEL GTK-BUTTON-LABEL "label" "gchararray" T T)
2165 (IMAGE GTK-BUTTON-IMAGE "image" "GtkWidget" T T)
2166 (RELIEF GTK-BUTTON-RELIEF "relief" "GtkReliefStyle" T
2168 (USE-UNDERLINE GTK-BUTTON-USE-UNDERLINE "use-underline"
2170 (USE-STOCK GTK-BUTTON-USE-STOCK "use-stock" "gboolean"
2172 (FOCUS-ON-CLICK GTK-BUTTON-FOCUS-ON-CLICK
2173 "focus-on-click" "gboolean" T T)
2174 (XALIGN GTK-BUTTON-XALIGN "xalign" "gfloat" T T)
2175 (YALIGN GTK-BUTTON-YALIGN "yalign" "gfloat" T T)
2176 (IMAGE-POSITION GTK-BUTTON-IMAGE-POSITION
2177 "image-position" "GtkPositionType" T T)))
2180 @node Specifying additional properties for CLOS classes
2181 @section Specifying additional properties for CLOS classes
2183 Some properties are not exposed through GObject introspection facilities, but are rather present as a pair of functions (@code{class_get_property}, @code{class_set_property}). @code{gobject-class} metaclass supports such properties. For these properties to be included in automatically generated class definitions, they should be made known to the generator.
2185 Definitions generator uses variable @code{*additional-properties*} to get this information.
2187 Variable @code{*additional-properties*} contains a plist that maps GType names to a list of properties definitions (See @ref{define-g-object-class} for syntax of properties definitions).
2189 To supply the bindings generator with this information, bind @code{*additional-properties*} to such list when the generator is run.
2193 (("GtkTreeViewColumn"
2194 (:cffi gtk::tree-view
2195 gtk::tree-view-column-tree-view
2196 g-object "gtk_tree_view_column_get_tree_view" nil)
2197 (:cffi gtk::sort-column-id
2198 gtk::tree-view-column-sort-column-id
2199 :int "gtk_tree_view_column_get_sort_column_id" "gtk_tree_view_column_set_sort_column_id")
2200 (:cffi gtk::cell-renderers
2201 gtk::tree-view-column-cell-renderers
2202 (glist g-object :free-from-foreign t) "gtk_tree_view_column_get_cell_renderers" nil))
2205 gtk::tree-selection-mode
2206 gtk::selection-mode "gtk_tree_selection_get_mode" "gtk_tree_selection_set_mode")
2207 (:cffi gtk::select-function
2208 gtk::tree-selection-select-function
2209 nil gtk::tree-selection-get-selection-function gtk::tree-selection-set-select-function)))
2212 @node Generating names for CLOS classes and accessors
2213 @section Generating names for CLOS classes and accessors
2215 Names of types are generated by mapping @code{CamelCaseNames} to @code{dash-separated-names} and interning them in specified package. Additionally, prefix from beginning of the name may be stripped (@code{"GtkWidget"} has prefix @code{"Gtk"}, after stripping it maps to @code{widget}). Some names may require special processing (e.g., @code{"GObject"}, @code{"GInitiallyUnowned"} should map to class names in @code{gobject} package; @code{"GtkWindow"} and @code{"GdkWindow"} should receive different @code{symbol-name}s so that they can both be imported in one package).
2217 Accessors for slots are generated by concatenating class name, dash and slot name, producing names like @code{class-slot}: @code{container-child}, @code{button-label}, etc.
2219 Name generation affected by following variables:
2221 @item @var{*strip-prefix*}
2222 A string variable specifying the prefix that should to be stripped from the names to generate symbols (e.g., if @code{(equal "Gtk" *strip-prefix*)}, then type named @code{"GtkWidget"} will map to class named @code{widget}.
2223 @item @var{*lisp-name-exceptions*}
2224 A plist mapping from strings (type names) to symbols (class names) that have special name processing.
2227 `(("GObject" gobject:g-object)
2228 ("GtkObject" ,(intern "GTK-OBJECT" (find-package :gtk)))
2229 ("GInitiallyUnowned" gobject::g-initially-unowned)
2230 ("GtkWindow" ,(intern "GTK-WINDOW" (find-package :gtk)))
2231 ("GtkUIManager" ,(intern "UI-MANAGER" (find-package :gtk)))
2232 ("GtkUIManagerItemType" ,(intern "UI-MANAGER-ITEM-TYPE" (find-package :gtk))))
2236 @node generate-types-hierarchy-to-file
2237 @section generate-types-hierarchy-to-file
2240 (generate-types-hierarchy-to-file file
2242 &key include-referenced
2252 additional-properties)
2257 A string or pathname naming the file, or a stream.
2258 @item @var{root-type}
2259 A GType designator for a root type. All types that inherit from this type will be defined.
2260 @item @var{&key include-referenced}
2261 A boolean. Specifies whether referenced types should be included. Type is referenced if it is an interface or a type of property of type included in generation
2263 A string naming the prefix that should be removed from the beginning of names
2265 A package which will contain generated names of types, slots and accessors. It will also be the current package when the definitions are written to file
2266 @item @var{exceptions}
2267 A plist that maps GType names to their Lisp names.
2268 See @ref{Generating names for CLOS classes and accessors} for more info on exceptions from name generation mechanism
2269 @item @var{prologue}
2270 A string that will be included verbatim in generated code file
2271 @item @var{interfaces}
2272 Additional list of interfaces that will also be included in generation
2274 Additional list of enums that will also be included in generation
2276 Additional list of flags that will also be included in generation
2278 Additional list of object types that will also be included in generation
2279 @item @var{exclusions}
2280 A list of GType names that will be excluded from generation
2281 @item @var{additional-properties}
2282 A plist of properties definitions that will be added to generated classes.
2283 See @ref{Specifying additional properties for CLOS classes} for more information.
2286 Generates definitions for all types in a type hierarchy. Recursively scan types hierarchy (starting from @code{root} and @code{objects} and @code{interfaces}) (except types that were specifically excluded) and generate defintion for every mentioned type. Parameters control various aspects of definition generation.
2290 (generate-types-hierarchy-to-file
2291 "gtk.generated-classes.lisp"
2293 :include-referenced t
2295 :package (or (find-package :gtk) (make-package :gtk))
2296 :exceptions `(("GObject" gobject:g-object)
2297 ("GtkObject" ,(intern "GTK-OBJECT" (find-package :gtk)))
2298 ("GInitiallyUnowned" gobject::g-initially-unowned)
2299 ("GtkWindow" ,(intern "GTK-WINDOW" (find-package :gtk)))
2300 ("GtkUIManager" ,(intern "UI-MANAGER" (find-package :gtk)))
2301 ("GtkUIManagerItemType" ,(intern "UI-MANAGER-ITEM-TYPE" (find-package :gtk))))
2302 :prologue (format nil "(in-package :gtk)")
2303 :interfaces '("GtkBuildable" "GtkCellEditable" ...)
2304 :objects '("GtkSettings" "GtkRcStyle" ...)
2305 :flags '("GtkTextSearchFlags" "GtkAccelFlags" ...)
2306 :enums '("GtkTextDirection" "GtkSizeGroupMode" ...)
2307 :exclusions '("PangoStretch" "PangoVariant" ...)
2308 :additional-properties
2309 '(("GtkTreeViewColumn"
2312 gtk::tree-view-column-tree-view
2314 "gtk_tree_view_column_get_tree_view"