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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT
use crate::InputHints;
use crate::InputPurpose;
use glib::object::Cast;
use glib::object::IsA;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use glib::StaticType;
use glib::ToValue;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem;
use std::mem::transmute;
use std::ptr;
glib::wrapper! {
/// [`IMContext`][crate::IMContext] defines the interface for GTK+ input methods. An input method
/// is used by GTK+ text input widgets like [`Entry`][crate::Entry] to map from key events to
/// Unicode character strings.
///
/// The default input method can be set programmatically via the
/// `property::Settings::gtk-im-module` GtkSettings property. Alternatively, you may set
/// the GTK_IM_MODULE environment variable as documented in
/// [Running GTK+ Applications][gtk-running].
///
/// The [`Entry`][crate::Entry] `property::Entry::im-module` and [`TextView`][crate::TextView] `property::TextView::im-module`
/// properties may also be used to set input methods for specific widget
/// instances. For instance, a certain entry widget might be expected to contain
/// certain characters which would be easier to input with a certain input
/// method.
///
/// An input method may consume multiple key events in sequence and finally
/// output the composed result. This is called preediting, and an input method
/// may provide feedback about this process by displaying the intermediate
/// composition states as preedit text. For instance, the default GTK+ input
/// method implements the input of arbitrary Unicode code points by holding down
/// the Control and Shift keys and then typing “U” followed by the hexadecimal
/// digits of the code point. When releasing the Control and Shift keys,
/// preediting ends and the character is inserted as text. Ctrl+Shift+u20AC for
/// example results in the € sign.
///
/// Additional input methods can be made available for use by GTK+ widgets as
/// loadable modules. An input method module is a small shared library which
/// implements a subclass of [`IMContext`][crate::IMContext] or [`IMContextSimple`][crate::IMContextSimple] and exports
/// these four functions:
///
///
///
/// **⚠️ The following code is in C ⚠️**
///
/// ```C
/// void im_module_init(GTypeModule *module);
/// ```
/// This function should register the `GType` of the [`IMContext`][crate::IMContext] subclass which
/// implements the input method by means of `g_type_module_register_type()`. Note
/// that `g_type_register_static()` cannot be used as the type needs to be
/// registered dynamically.
///
///
///
/// **⚠️ The following code is in C ⚠️**
///
/// ```C
/// void im_module_exit(void);
/// ```
/// Here goes any cleanup code your input method might require on module unload.
///
///
///
/// **⚠️ The following code is in C ⚠️**
///
/// ```C
/// void im_module_list(const GtkIMContextInfo ***contexts, int *n_contexts)
/// {
/// *contexts = info_list;
/// *n_contexts = G_N_ELEMENTS (info_list);
/// }
/// ```
/// This function returns the list of input methods provided by the module. The
/// example implementation above shows a common solution and simply returns a
/// pointer to statically defined array of `GtkIMContextInfo` items for each
/// provided input method.
///
///
///
/// **⚠️ The following code is in C ⚠️**
///
/// ```C
/// GtkIMContext * im_module_create(const gchar *context_id);
/// ```
/// This function should return a pointer to a newly created instance of the
/// [`IMContext`][crate::IMContext] subclass identified by `context_id`. The context ID is the same
/// as specified in the `GtkIMContextInfo` array returned by `im_module_list()`.
///
/// After a new loadable input method module has been installed on the system,
/// the configuration file `gtk.immodules` needs to be
/// regenerated by [gtk-query-immodules-3.0][gtk-query-immodules-3.0],
/// in order for the new input method to become available to GTK+ applications.
///
/// This is an Abstract Base Class, you cannot instantiate it.
///
/// # Implements
///
/// [`IMContextExt`][trait@crate::prelude::IMContextExt], [`trait@glib::ObjectExt`]
#[doc(alias = "GtkIMContext")]
pub struct IMContext(Object<ffi::GtkIMContext, ffi::GtkIMContextClass>);
match fn {
type_ => || ffi::gtk_im_context_get_type(),
}
}
impl IMContext {
pub const NONE: Option<&'static IMContext> = None;
}
/// Trait containing all [`struct@IMContext`] methods.
///
/// # Implementors
///
/// [`IMContextSimple`][struct@crate::IMContextSimple], [`IMContext`][struct@crate::IMContext], [`IMMulticontext`][struct@crate::IMMulticontext]
pub trait IMContextExt: 'static {
/// Asks the widget that the input context is attached to to delete
/// characters around the cursor position by emitting the
/// GtkIMContext::delete_surrounding signal. Note that `offset` and `n_chars`
/// are in characters not in bytes which differs from the usage other
/// places in [`IMContext`][crate::IMContext].
///
/// In order to use this function, you should first call
/// [`surrounding()`][Self::surrounding()] to get the current context, and
/// call this function immediately afterwards to make sure that you
/// know what you are deleting. You should also account for the fact
/// that even if the signal was handled, the input context might not
/// have deleted all the characters that were requested to be deleted.
///
/// This function is used by an input method that wants to make
/// subsitutions in the existing text in response to new input. It is
/// not useful for applications.
/// ## `offset`
/// offset from cursor position in chars;
/// a negative value means start before the cursor.
/// ## `n_chars`
/// number of characters to delete.
///
/// # Returns
///
/// [`true`] if the signal was handled.
#[doc(alias = "gtk_im_context_delete_surrounding")]
fn delete_surrounding(&self, offset: i32, n_chars: i32) -> bool;
/// Allow an input method to internally handle key press and release
/// events. If this function returns [`true`], then no further processing
/// should be done for this key event.
/// ## `event`
/// the key event
///
/// # Returns
///
/// [`true`] if the input method handled the key event.
#[doc(alias = "gtk_im_context_filter_keypress")]
fn filter_keypress(&self, event: &gdk::EventKey) -> bool;
/// Notify the input method that the widget to which this
/// input context corresponds has gained focus. The input method
/// may, for example, change the displayed feedback to reflect
/// this change.
#[doc(alias = "gtk_im_context_focus_in")]
fn focus_in(&self);
/// Notify the input method that the widget to which this
/// input context corresponds has lost focus. The input method
/// may, for example, change the displayed feedback or reset the contexts
/// state to reflect this change.
#[doc(alias = "gtk_im_context_focus_out")]
fn focus_out(&self);
/// Retrieve the current preedit string for the input context,
/// and a list of attributes to apply to the string.
/// This string should be displayed inserted at the insertion
/// point.
///
/// # Returns
///
///
/// ## `str`
/// location to store the retrieved
/// string. The string retrieved must be freed with `g_free()`.
///
/// ## `attrs`
/// location to store the retrieved
/// attribute list. When you are done with this list, you
/// must unreference it with `pango_attr_list_unref()`.
///
/// ## `cursor_pos`
/// location to store position of cursor (in characters)
/// within the preedit string.
#[doc(alias = "gtk_im_context_get_preedit_string")]
#[doc(alias = "get_preedit_string")]
fn preedit_string(&self) -> (glib::GString, pango::AttrList, i32);
/// Retrieves context around the insertion point. Input methods
/// typically want context in order to constrain input text based on
/// existing text; this is important for languages such as Thai where
/// only some sequences of characters are allowed.
///
/// This function is implemented by emitting the
/// GtkIMContext::retrieve_surrounding signal on the input method; in
/// response to this signal, a widget should provide as much context as
/// is available, up to an entire paragraph, by calling
/// [`set_surrounding()`][Self::set_surrounding()]. Note that there is no obligation
/// for a widget to respond to the ::retrieve_surrounding signal, so input
/// methods must be prepared to function without context.
///
/// # Returns
///
/// [`true`] if surrounding text was provided; in this case
/// you must free the result stored in *text.
///
/// ## `text`
/// location to store a UTF-8 encoded
/// string of text holding context around the insertion point.
/// If the function returns [`true`], then you must free the result
/// stored in this location with `g_free()`.
///
/// ## `cursor_index`
/// location to store byte index of the insertion
/// cursor within `text`.
#[doc(alias = "gtk_im_context_get_surrounding")]
#[doc(alias = "get_surrounding")]
fn surrounding(&self) -> Option<(glib::GString, i32)>;
/// Notify the input method that a change such as a change in cursor
/// position has been made. This will typically cause the input
/// method to clear the preedit state.
#[doc(alias = "gtk_im_context_reset")]
fn reset(&self);
/// Set the client window for the input context; this is the
/// [`gdk::Window`][crate::gdk::Window] in which the input appears. This window is
/// used in order to correctly position status windows, and may
/// also be used for purposes internal to the input method.
/// ## `window`
/// the client window. This may be [`None`] to indicate
/// that the previous client window no longer exists.
#[doc(alias = "gtk_im_context_set_client_window")]
fn set_client_window(&self, window: Option<&gdk::Window>);
/// Notify the input method that a change in cursor
/// position has been made. The location is relative to the client
/// window.
/// ## `area`
/// new location
#[doc(alias = "gtk_im_context_set_cursor_location")]
fn set_cursor_location(&self, area: &gdk::Rectangle);
/// Sets surrounding context around the insertion point and preedit
/// string. This function is expected to be called in response to the
/// GtkIMContext::retrieve_surrounding signal, and will likely have no
/// effect if called at other times.
/// ## `text`
/// text surrounding the insertion point, as UTF-8.
/// the preedit string should not be included within
/// `text`.
/// ## `len`
/// the length of `text`, or -1 if `text` is nul-terminated
/// ## `cursor_index`
/// the byte index of the insertion cursor within `text`.
#[doc(alias = "gtk_im_context_set_surrounding")]
fn set_surrounding(&self, text: &str, cursor_index: i32);
/// Sets whether the IM context should use the preedit string
/// to display feedback. If `use_preedit` is FALSE (default
/// is TRUE), then the IM context may use some other method to display
/// feedback, such as displaying it in a child of the root window.
/// ## `use_preedit`
/// whether the IM context should use the preedit string.
#[doc(alias = "gtk_im_context_set_use_preedit")]
fn set_use_preedit(&self, use_preedit: bool);
#[doc(alias = "input-hints")]
fn input_hints(&self) -> InputHints;
#[doc(alias = "input-hints")]
fn set_input_hints(&self, input_hints: InputHints);
#[doc(alias = "input-purpose")]
fn input_purpose(&self) -> InputPurpose;
#[doc(alias = "input-purpose")]
fn set_input_purpose(&self, input_purpose: InputPurpose);
/// The ::commit signal is emitted when a complete input sequence
/// has been entered by the user. This can be a single character
/// immediately after a key press or the final result of preediting.
/// ## `str`
/// the completed character(s) entered by the user
#[doc(alias = "commit")]
fn connect_commit<F: Fn(&Self, &str) + 'static>(&self, f: F) -> SignalHandlerId;
/// The ::delete-surrounding signal is emitted when the input method
/// needs to delete all or part of the context surrounding the cursor.
/// ## `offset`
/// the character offset from the cursor position of the text
/// to be deleted. A negative value indicates a position before
/// the cursor.
/// ## `n_chars`
/// the number of characters to be deleted
///
/// # Returns
///
/// [`true`] if the signal was handled.
#[doc(alias = "delete-surrounding")]
fn connect_delete_surrounding<F: Fn(&Self, i32, i32) -> bool + 'static>(
&self,
f: F,
) -> SignalHandlerId;
/// The ::preedit-changed signal is emitted whenever the preedit sequence
/// currently being entered has changed. It is also emitted at the end of
/// a preedit sequence, in which case
/// [`preedit_string()`][Self::preedit_string()] returns the empty string.
#[doc(alias = "preedit-changed")]
fn connect_preedit_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
/// The ::preedit-end signal is emitted when a preediting sequence
/// has been completed or canceled.
#[doc(alias = "preedit-end")]
fn connect_preedit_end<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
/// The ::preedit-start signal is emitted when a new preediting sequence
/// starts.
#[doc(alias = "preedit-start")]
fn connect_preedit_start<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
/// The ::retrieve-surrounding signal is emitted when the input method
/// requires the context surrounding the cursor. The callback should set
/// the input method surrounding context by calling the
/// [`set_surrounding()`][Self::set_surrounding()] method.
///
/// # Returns
///
/// [`true`] if the signal was handled.
#[doc(alias = "retrieve-surrounding")]
fn connect_retrieve_surrounding<F: Fn(&Self) -> bool + 'static>(&self, f: F)
-> SignalHandlerId;
#[doc(alias = "input-hints")]
fn connect_input_hints_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
#[doc(alias = "input-purpose")]
fn connect_input_purpose_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId;
}
impl<O: IsA<IMContext>> IMContextExt for O {
fn delete_surrounding(&self, offset: i32, n_chars: i32) -> bool {
unsafe {
from_glib(ffi::gtk_im_context_delete_surrounding(
self.as_ref().to_glib_none().0,
offset,
n_chars,
))
}
}
fn filter_keypress(&self, event: &gdk::EventKey) -> bool {
unsafe {
from_glib(ffi::gtk_im_context_filter_keypress(
self.as_ref().to_glib_none().0,
mut_override(event.to_glib_none().0),
))
}
}
fn focus_in(&self) {
unsafe {
ffi::gtk_im_context_focus_in(self.as_ref().to_glib_none().0);
}
}
fn focus_out(&self) {
unsafe {
ffi::gtk_im_context_focus_out(self.as_ref().to_glib_none().0);
}
}
fn preedit_string(&self) -> (glib::GString, pango::AttrList, i32) {
unsafe {
let mut str = ptr::null_mut();
let mut attrs = ptr::null_mut();
let mut cursor_pos = mem::MaybeUninit::uninit();
ffi::gtk_im_context_get_preedit_string(
self.as_ref().to_glib_none().0,
&mut str,
&mut attrs,
cursor_pos.as_mut_ptr(),
);
(
from_glib_full(str),
from_glib_full(attrs),
cursor_pos.assume_init(),
)
}
}
fn surrounding(&self) -> Option<(glib::GString, i32)> {
unsafe {
let mut text = ptr::null_mut();
let mut cursor_index = mem::MaybeUninit::uninit();
let ret = from_glib(ffi::gtk_im_context_get_surrounding(
self.as_ref().to_glib_none().0,
&mut text,
cursor_index.as_mut_ptr(),
));
if ret {
Some((from_glib_full(text), cursor_index.assume_init()))
} else {
None
}
}
}
fn reset(&self) {
unsafe {
ffi::gtk_im_context_reset(self.as_ref().to_glib_none().0);
}
}
fn set_client_window(&self, window: Option<&gdk::Window>) {
unsafe {
ffi::gtk_im_context_set_client_window(
self.as_ref().to_glib_none().0,
window.to_glib_none().0,
);
}
}
fn set_cursor_location(&self, area: &gdk::Rectangle) {
unsafe {
ffi::gtk_im_context_set_cursor_location(
self.as_ref().to_glib_none().0,
area.to_glib_none().0,
);
}
}
fn set_surrounding(&self, text: &str, cursor_index: i32) {
let len = text.len() as i32;
unsafe {
ffi::gtk_im_context_set_surrounding(
self.as_ref().to_glib_none().0,
text.to_glib_none().0,
len,
cursor_index,
);
}
}
fn set_use_preedit(&self, use_preedit: bool) {
unsafe {
ffi::gtk_im_context_set_use_preedit(
self.as_ref().to_glib_none().0,
use_preedit.into_glib(),
);
}
}
fn input_hints(&self) -> InputHints {
glib::ObjectExt::property(self.as_ref(), "input-hints")
}
fn set_input_hints(&self, input_hints: InputHints) {
glib::ObjectExt::set_property(self.as_ref(), "input-hints", &input_hints)
}
fn input_purpose(&self) -> InputPurpose {
glib::ObjectExt::property(self.as_ref(), "input-purpose")
}
fn set_input_purpose(&self, input_purpose: InputPurpose) {
glib::ObjectExt::set_property(self.as_ref(), "input-purpose", &input_purpose)
}
fn connect_commit<F: Fn(&Self, &str) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn commit_trampoline<P: IsA<IMContext>, F: Fn(&P, &str) + 'static>(
this: *mut ffi::GtkIMContext,
str: *mut libc::c_char,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(
IMContext::from_glib_borrow(this).unsafe_cast_ref(),
&glib::GString::from_glib_borrow(str),
)
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"commit\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
commit_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_delete_surrounding<F: Fn(&Self, i32, i32) -> bool + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn delete_surrounding_trampoline<
P: IsA<IMContext>,
F: Fn(&P, i32, i32) -> bool + 'static,
>(
this: *mut ffi::GtkIMContext,
offset: libc::c_int,
n_chars: libc::c_int,
f: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let f: &F = &*(f as *const F);
f(
IMContext::from_glib_borrow(this).unsafe_cast_ref(),
offset,
n_chars,
)
.into_glib()
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"delete-surrounding\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
delete_surrounding_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_preedit_changed<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn preedit_changed_trampoline<P: IsA<IMContext>, F: Fn(&P) + 'static>(
this: *mut ffi::GtkIMContext,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(IMContext::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"preedit-changed\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
preedit_changed_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_preedit_end<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn preedit_end_trampoline<P: IsA<IMContext>, F: Fn(&P) + 'static>(
this: *mut ffi::GtkIMContext,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(IMContext::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"preedit-end\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
preedit_end_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_preedit_start<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn preedit_start_trampoline<P: IsA<IMContext>, F: Fn(&P) + 'static>(
this: *mut ffi::GtkIMContext,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(IMContext::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"preedit-start\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
preedit_start_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_retrieve_surrounding<F: Fn(&Self) -> bool + 'static>(
&self,
f: F,
) -> SignalHandlerId {
unsafe extern "C" fn retrieve_surrounding_trampoline<
P: IsA<IMContext>,
F: Fn(&P) -> bool + 'static,
>(
this: *mut ffi::GtkIMContext,
f: glib::ffi::gpointer,
) -> glib::ffi::gboolean {
let f: &F = &*(f as *const F);
f(IMContext::from_glib_borrow(this).unsafe_cast_ref()).into_glib()
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"retrieve-surrounding\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
retrieve_surrounding_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_input_hints_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn notify_input_hints_trampoline<
P: IsA<IMContext>,
F: Fn(&P) + 'static,
>(
this: *mut ffi::GtkIMContext,
_param_spec: glib::ffi::gpointer,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(IMContext::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"notify::input-hints\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
notify_input_hints_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
fn connect_input_purpose_notify<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
unsafe extern "C" fn notify_input_purpose_trampoline<
P: IsA<IMContext>,
F: Fn(&P) + 'static,
>(
this: *mut ffi::GtkIMContext,
_param_spec: glib::ffi::gpointer,
f: glib::ffi::gpointer,
) {
let f: &F = &*(f as *const F);
f(IMContext::from_glib_borrow(this).unsafe_cast_ref())
}
unsafe {
let f: Box_<F> = Box_::new(f);
connect_raw(
self.as_ptr() as *mut _,
b"notify::input-purpose\0".as_ptr() as *const _,
Some(transmute::<_, unsafe extern "C" fn()>(
notify_input_purpose_trampoline::<Self, F> as *const (),
)),
Box_::into_raw(f),
)
}
}
}
impl fmt::Display for IMContext {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.write_str("IMContext")
}
}