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Learning_GTK4_tree/gtk/gtkimcontextwayland.c

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/* GTK - The GIMP Toolkit
* Copyright (C) 2017 Red Hat, Inc.
* Copyright (C) 2018 Purism SPC
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <string.h>
#include <wayland-client-protocol.h>
#include "gtk/gtkdragsourceprivate.h"
#include "gtk/gtkimcontextwayland.h"
#include "gtk/gtkimmoduleprivate.h"
#include "gdk/wayland/gdkwayland.h"
#include "text-input-unstable-v3-client-protocol.h"
typedef struct _GtkIMContextWaylandGlobal GtkIMContextWaylandGlobal;
typedef struct _GtkIMContextWayland GtkIMContextWayland;
typedef struct _GtkIMContextWaylandClass GtkIMContextWaylandClass;
struct _GtkIMContextWaylandGlobal
{
struct wl_display *display;
struct wl_registry *registry;
uint32_t text_input_manager_wl_id;
struct zwp_text_input_manager_v3 *text_input_manager;
struct zwp_text_input_v3 *text_input;
GtkIMContext *current;
/* The input-method.enter event may happen before or after GTK focus-in,
* so the context may not exist at the time. Same for leave and focus-out. */
gboolean focused;
guint serial;
guint done_serial;
};
struct _GtkIMContextWaylandClass
{
GtkIMContextSimpleClass parent_class;
};
struct preedit {
char *text;
int cursor_begin;
int cursor_end;
};
struct surrounding_delete {
guint before_length;
guint after_length;
};
struct _GtkIMContextWayland
{
GtkIMContextSimple parent_instance;
GtkWidget *widget;
GtkGesture *gesture;
double press_x;
double press_y;
struct {
char *text;
int cursor_idx;
int anchor_idx;
} surrounding;
enum zwp_text_input_v3_change_cause surrounding_change;
struct surrounding_delete pending_surrounding_delete;
struct preedit current_preedit;
struct preedit pending_preedit;
char *pending_commit;
cairo_rectangle_int_t cursor_rect;
guint use_preedit : 1;
};
static void gtk_im_context_wayland_focus_out (GtkIMContext *context);
static void commit_state (GtkIMContextWayland *context);
static void notify_surrounding_text (GtkIMContextWayland *context);
static void notify_cursor_location (GtkIMContextWayland *context);
static void notify_content_type (GtkIMContextWayland *context);
G_DEFINE_TYPE_WITH_CODE (GtkIMContextWayland, gtk_im_context_wayland, GTK_TYPE_IM_CONTEXT_SIMPLE,
gtk_im_module_ensure_extension_point ();
g_io_extension_point_implement (GTK_IM_MODULE_EXTENSION_POINT_NAME,
g_define_type_id,
"wayland",
100));
#define GTK_IM_CONTEXT_WAYLAND(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), gtk_im_context_wayland_get_type (), GtkIMContextWayland))
static GtkIMContextWaylandGlobal *
gtk_im_context_wayland_global_get (GdkDisplay *display);
static GtkIMContextWaylandGlobal *
gtk_im_context_wayland_get_global (GtkIMContextWayland *self)
{
GtkIMContextWaylandGlobal *global;
if (self->widget == NULL)
return NULL;
global = gtk_im_context_wayland_global_get (gtk_widget_get_display (self->widget));
if (global->current != GTK_IM_CONTEXT (self))
return NULL;
if (global->text_input == NULL)
return NULL;
return global;
}
static void
notify_im_change (GtkIMContextWayland *context,
enum zwp_text_input_v3_change_cause cause)
{
GtkIMContextWaylandGlobal *global;
gboolean result;
global = gtk_im_context_wayland_get_global (context);
if (global == NULL)
return;
context->surrounding_change = cause;
g_signal_emit_by_name (global->current, "retrieve-surrounding", &result);
notify_surrounding_text (context);
notify_content_type (context);
notify_cursor_location (context);
commit_state (context);
}
static void
text_input_preedit (void *data,
struct zwp_text_input_v3 *text_input,
const char *text,
int cursor_begin,
int cursor_end)
{
GtkIMContextWayland *context;
GtkIMContextWaylandGlobal *global = data;
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
g_free (context->pending_preedit.text);
context->pending_preedit.text = g_strdup (text);
context->pending_preedit.cursor_begin = cursor_begin;
context->pending_preedit.cursor_end = cursor_end;
}
static void
text_input_preedit_apply (GtkIMContextWaylandGlobal *global)
{
GtkIMContextWayland *context;
gboolean state_change;
struct preedit defaults = {0};
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
if (context->pending_preedit.text == NULL &&
context->current_preedit.text == NULL)
return;
state_change = ((context->pending_preedit.text == NULL)
!= (context->current_preedit.text == NULL));
if (state_change && !context->current_preedit.text)
g_signal_emit_by_name (context, "preedit-start");
g_free (context->current_preedit.text);
context->current_preedit = context->pending_preedit;
context->pending_preedit = defaults;
g_signal_emit_by_name (context, "preedit-changed");
if (state_change && !context->current_preedit.text)
g_signal_emit_by_name (context, "preedit-end");
}
static void
text_input_commit (void *data,
struct zwp_text_input_v3 *text_input,
const char *text)
{
GtkIMContextWaylandGlobal *global = data;
GtkIMContextWayland *context;
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
g_free (context->pending_commit);
context->pending_commit = g_strdup (text);
}
static void
text_input_commit_apply (GtkIMContextWaylandGlobal *global)
{
GtkIMContextWayland *context;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
if (context->pending_commit)
g_signal_emit_by_name (global->current, "commit", context->pending_commit);
g_free (context->pending_commit);
context->pending_commit = NULL;
}
static void
text_input_delete_surrounding_text (void *data,
struct zwp_text_input_v3 *text_input,
uint32_t before_length,
uint32_t after_length)
{
GtkIMContextWaylandGlobal *global = data;
GtkIMContextWayland *context;
char *cursor_pointer;
uint32_t char_before_length;
uint32_t char_after_length;
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
/* We already got byte lengths from text_input_v3, but GTK uses char lengths
* for delete_surrounding, So convert it here.
*/
cursor_pointer = context->surrounding.text + context->surrounding.cursor_idx;
char_before_length = g_utf8_pointer_to_offset (cursor_pointer - before_length, cursor_pointer);
char_after_length = g_utf8_pointer_to_offset (cursor_pointer, cursor_pointer + after_length);
context->pending_surrounding_delete.before_length = char_before_length;
context->pending_surrounding_delete.after_length = char_after_length;
}
static void
text_input_delete_surrounding_text_apply (GtkIMContextWaylandGlobal *global)
{
GtkIMContextWayland *context;
gboolean retval;
int len;
struct surrounding_delete defaults = {0};
context = GTK_IM_CONTEXT_WAYLAND (global->current);
len = context->pending_surrounding_delete.after_length
+ context->pending_surrounding_delete.before_length;
if (len > 0)
{
g_signal_emit_by_name (global->current, "delete-surrounding",
-context->pending_surrounding_delete.before_length,
len, &retval);
notify_im_change (GTK_IM_CONTEXT_WAYLAND (context),
ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_INPUT_METHOD);
}
context->pending_surrounding_delete = defaults;
}
static void
text_input_done (void *data,
struct zwp_text_input_v3 *text_input,
uint32_t serial)
{
GtkIMContextWaylandGlobal *global = data;
GtkIMContextWayland *context;
gboolean update_im;
global->done_serial = serial;
if (!global->current)
return;
context = GTK_IM_CONTEXT_WAYLAND (global->current);
update_im = (context->pending_commit != NULL ||
g_strcmp0 (context->pending_preedit.text,
context->current_preedit.text) != 0);
text_input_delete_surrounding_text_apply (global);
text_input_commit_apply (global);
text_input_preedit_apply (global);
if (update_im && global->serial == serial)
notify_im_change (context, ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_INPUT_METHOD);
}
static void
notify_surrounding_text (GtkIMContextWayland *context)
{
#define MAX_LEN 4000
GtkIMContextWaylandGlobal *global;
const char *start, *end;
int len, cursor, anchor;
char *str = NULL;
if (!context->surrounding.text)
return;
global = gtk_im_context_wayland_get_global (context);
if (global == NULL)
return;
len = strlen (context->surrounding.text);
cursor = context->surrounding.cursor_idx;
anchor = context->surrounding.anchor_idx;
/* The protocol specifies a maximum length of 4KiB on transfers,
* mangle the surrounding text if it's bigger than that, and relocate
* cursor/anchor locations as per the string being sent.
*/
if (len > MAX_LEN)
{
if (context->surrounding.cursor_idx < MAX_LEN &&
context->surrounding.anchor_idx < MAX_LEN)
{
start = context->surrounding.text;
end = &context->surrounding.text[MAX_LEN];
}
else if (context->surrounding.cursor_idx > len - MAX_LEN &&
context->surrounding.anchor_idx > len - MAX_LEN)
{
start = &context->surrounding.text[len - MAX_LEN];
end = &context->surrounding.text[len];
}
else
{
int mid, a, b;
int cursor_len = ABS (context->surrounding.cursor_idx -
context->surrounding.anchor_idx);
if (cursor_len > MAX_LEN)
{
g_warn_if_reached ();
return;
}
mid = MIN (context->surrounding.cursor_idx,
context->surrounding.anchor_idx) + (cursor_len / 2);
a = MAX (0, mid - (MAX_LEN / 2));
b = MIN (len, mid + (MAX_LEN / 2));
start = &context->surrounding.text[a];
end = &context->surrounding.text[b];
}
if (start != context->surrounding.text)
start = g_utf8_next_char (start);
if (end != &context->surrounding.text[len])
end = g_utf8_find_prev_char (context->surrounding.text, end);
cursor -= start - context->surrounding.text;
anchor -= start - context->surrounding.text;
str = g_strndup (start, end - start);
}
zwp_text_input_v3_set_surrounding_text (global->text_input,
str ? str : context->surrounding.text,
cursor, anchor);
zwp_text_input_v3_set_text_change_cause (global->text_input,
context->surrounding_change);
g_free (str);
#undef MAX_LEN
}
static void
notify_cursor_location (GtkIMContextWayland *context)
{
GtkIMContextWaylandGlobal *global;
cairo_rectangle_int_t rect;
double nx, ny;
graphene_point_t p;
global = gtk_im_context_wayland_get_global (context);
if (global == NULL)
return;
rect = context->cursor_rect;
if (!gtk_widget_compute_point (context->widget,
GTK_WIDGET (gtk_widget_get_root (context->widget)),
&GRAPHENE_POINT_INIT (rect.x, rect.y),
&p))
graphene_point_init (&p, rect.x, rect.y);
gtk_native_get_surface_transform (gtk_widget_get_native (context->widget), &nx, &ny);
rect.x = p.x + nx;
rect.y = p.y + ny;
zwp_text_input_v3_set_cursor_rectangle (global->text_input,
rect.x, rect.y,
rect.width, rect.height);
}
static uint32_t
translate_hints (GtkInputHints input_hints,
GtkInputPurpose purpose)
{
uint32_t hints = 0;
if (input_hints & GTK_INPUT_HINT_SPELLCHECK)
hints |= ZWP_TEXT_INPUT_V3_CONTENT_HINT_SPELLCHECK;
if (input_hints & GTK_INPUT_HINT_WORD_COMPLETION)
hints |= ZWP_TEXT_INPUT_V3_CONTENT_HINT_COMPLETION;
if (input_hints & GTK_INPUT_HINT_LOWERCASE)
hints |= ZWP_TEXT_INPUT_V3_CONTENT_HINT_LOWERCASE;
if (input_hints & GTK_INPUT_HINT_UPPERCASE_CHARS)
hints |= ZWP_TEXT_INPUT_V3_CONTENT_HINT_UPPERCASE;
if (input_hints & GTK_INPUT_HINT_UPPERCASE_WORDS)
hints |= ZWP_TEXT_INPUT_V3_CONTENT_HINT_TITLECASE;
if (input_hints & GTK_INPUT_HINT_UPPERCASE_SENTENCES)
hints |= ZWP_TEXT_INPUT_V3_CONTENT_HINT_AUTO_CAPITALIZATION;
if (purpose == GTK_INPUT_PURPOSE_PIN ||
purpose == GTK_INPUT_PURPOSE_PASSWORD)
{
hints |= (ZWP_TEXT_INPUT_V3_CONTENT_HINT_HIDDEN_TEXT |
ZWP_TEXT_INPUT_V3_CONTENT_HINT_SENSITIVE_DATA);
}
return hints;
}
static uint32_t
translate_purpose (GtkInputPurpose purpose)
{
switch (purpose)
{
case GTK_INPUT_PURPOSE_FREE_FORM:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_NORMAL;
case GTK_INPUT_PURPOSE_ALPHA:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_ALPHA;
case GTK_INPUT_PURPOSE_DIGITS:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_DIGITS;
case GTK_INPUT_PURPOSE_NUMBER:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_NUMBER;
case GTK_INPUT_PURPOSE_PHONE:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_PHONE;
case GTK_INPUT_PURPOSE_URL:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_URL;
case GTK_INPUT_PURPOSE_EMAIL:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_EMAIL;
case GTK_INPUT_PURPOSE_NAME:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_NAME;
case GTK_INPUT_PURPOSE_PASSWORD:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_PASSWORD;
case GTK_INPUT_PURPOSE_PIN:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_PIN;
case GTK_INPUT_PURPOSE_TERMINAL:
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_TERMINAL;
default:
g_assert_not_reached ();
}
return ZWP_TEXT_INPUT_V3_CONTENT_PURPOSE_NORMAL;
}
static void
notify_content_type (GtkIMContextWayland *context)
{
GtkIMContextWaylandGlobal *global;
GtkInputHints hints;
GtkInputPurpose purpose;
global = gtk_im_context_wayland_get_global (context);
if (global == NULL)
return;
g_object_get (context,
"input-hints", &hints,
"input-purpose", &purpose,
NULL);
zwp_text_input_v3_set_content_type (global->text_input,
translate_hints (hints, purpose),
translate_purpose (purpose));
}
static void
commit_state (GtkIMContextWayland *context)
{
GtkIMContextWaylandGlobal *global;
global = gtk_im_context_wayland_get_global (context);
if (global == NULL)
return;
global->serial++;
zwp_text_input_v3_commit (global->text_input);
context->surrounding_change = ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_INPUT_METHOD;
}
static void
gtk_im_context_wayland_finalize (GObject *object)
{
GtkIMContextWayland *context = GTK_IM_CONTEXT_WAYLAND (object);
gtk_im_context_wayland_focus_out (GTK_IM_CONTEXT (context));
g_clear_object (&context->widget);
g_clear_object (&context->gesture);
g_free (context->surrounding.text);
g_free (context->current_preedit.text);
g_free (context->pending_preedit.text);
g_free (context->pending_commit);
G_OBJECT_CLASS (gtk_im_context_wayland_parent_class)->finalize (object);
}
static void
pressed_cb (GtkGestureClick *gesture,
int n_press,
double x,
double y,
GtkIMContextWayland *context)
{
if (n_press == 1)
{
context->press_x = x;
context->press_y = y;
}
}
static void
released_cb (GtkGestureClick *gesture,
int n_press,
double x,
double y,
GtkIMContextWayland *context)
{
GtkIMContextWaylandGlobal *global;
GtkInputHints hints;
global = gtk_im_context_wayland_get_global (context);
if (global == NULL)
return;
g_object_get (context, "input-hints", &hints, NULL);
if (global->focused &&
n_press == 1 &&
(hints & GTK_INPUT_HINT_INHIBIT_OSK) == 0 &&
!gtk_drag_check_threshold_double (context->widget,
context->press_x,
context->press_y,
x, y))
{
zwp_text_input_v3_enable (global->text_input);
notify_im_change (GTK_IM_CONTEXT_WAYLAND (context),
ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_OTHER);
}
}
static void
gtk_im_context_wayland_set_client_widget (GtkIMContext *context,
GtkWidget *widget)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (widget == context_wayland->widget)
return;
if (context_wayland->widget)
gtk_im_context_wayland_focus_out (context);
if (context_wayland->widget && context_wayland->gesture)
{
gtk_widget_remove_controller (context_wayland->widget,
GTK_EVENT_CONTROLLER (context_wayland->gesture));
context_wayland->gesture = NULL;
}
g_set_object (&context_wayland->widget, widget);
if (widget &&
!GTK_IS_TEXT (widget) &&
!GTK_IS_TEXT_VIEW (widget))
{
GtkGesture *gesture;
gesture = gtk_gesture_click_new ();
gtk_event_controller_set_static_name (GTK_EVENT_CONTROLLER (gesture), "wayland-im-context-click");
gtk_event_controller_set_propagation_phase (GTK_EVENT_CONTROLLER (gesture),
GTK_PHASE_CAPTURE);
g_signal_connect (gesture, "pressed",
G_CALLBACK (pressed_cb), context);
g_signal_connect (gesture, "released",
G_CALLBACK (released_cb), context);
gtk_widget_add_controller (context_wayland->widget,
GTK_EVENT_CONTROLLER (gesture));
context_wayland->gesture = gesture;
}
}
static void
gtk_im_context_wayland_get_preedit_string (GtkIMContext *context,
char **str,
PangoAttrList **attrs,
int *cursor_pos)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
const char *preedit_str;
if (attrs)
*attrs = NULL;
GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->get_preedit_string (context,
str, attrs,
cursor_pos);
/* If the parent implementation returns a len>0 string, go with it */
if (str && *str)
{
if (**str)
return;
g_free (*str);
}
preedit_str =
context_wayland->current_preedit.text ? context_wayland->current_preedit.text : "";
if (cursor_pos)
*cursor_pos = g_utf8_strlen (preedit_str,
context_wayland->current_preedit.cursor_begin);
if (str)
*str = g_strdup (preedit_str);
if (attrs)
{
PangoAttribute *attr;
guint len = strlen (preedit_str);
if (!*attrs)
*attrs = pango_attr_list_new ();
attr = pango_attr_underline_new (PANGO_UNDERLINE_SINGLE);
attr->start_index = 0;
attr->end_index = len;
pango_attr_list_insert (*attrs, attr);
/* enable fallback, since IBus will send us things like ⎄ */
attr = pango_attr_fallback_new (TRUE);
attr->start_index = 0;
attr->end_index = len;
pango_attr_list_insert (*attrs, attr);
if (context_wayland->current_preedit.cursor_begin
!= context_wayland->current_preedit.cursor_end)
{
/* FIXME: Oh noes, how to highlight while taking into account user preferences? */
PangoAttribute *cursor = pango_attr_weight_new (PANGO_WEIGHT_BOLD);
cursor->start_index = context_wayland->current_preedit.cursor_begin;
cursor->end_index = context_wayland->current_preedit.cursor_end;
pango_attr_list_insert (*attrs, cursor);
}
}
}
static gboolean
gtk_im_context_wayland_filter_keypress (GtkIMContext *context,
GdkEvent *key)
{
/* This is done by the compositor */
return GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->filter_keypress (context, key);
}
static void
enable (GtkIMContextWayland *context_wayland,
GtkIMContextWaylandGlobal *global)
{
zwp_text_input_v3_enable (global->text_input);
notify_im_change (context_wayland,
ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_OTHER);
}
static void
disable (GtkIMContextWayland *context_wayland,
GtkIMContextWaylandGlobal *global)
{
zwp_text_input_v3_disable (global->text_input);
commit_state (context_wayland);
/* The commit above will still count in the .done event accounting,
* we should account for it, lest the serial gets out of sync after
* a future focus_in/enable.
*/
global->done_serial++;
/* after disable, incoming state changes won't take effect anyway */
if (context_wayland->current_preedit.text)
{
text_input_preedit (global, global->text_input, NULL, 0, 0);
text_input_preedit_apply (global);
}
}
static void
text_input_enter (void *data,
struct zwp_text_input_v3 *text_input,
struct wl_surface *surface)
{
GtkIMContextWaylandGlobal *global = data;
global->focused = TRUE;
if (global->current)
enable (GTK_IM_CONTEXT_WAYLAND (global->current), global);
}
static void
text_input_leave (void *data,
struct zwp_text_input_v3 *text_input,
struct wl_surface *surface)
{
GtkIMContextWaylandGlobal *global = data;
global->focused = FALSE;
if (global->current)
disable (GTK_IM_CONTEXT_WAYLAND (global->current), global);
}
static const struct zwp_text_input_v3_listener text_input_listener = {
text_input_enter,
text_input_leave,
text_input_preedit,
text_input_commit,
text_input_delete_surrounding_text,
text_input_done,
};
static void
registry_handle_global (void *data,
struct wl_registry *registry,
uint32_t id,
const char *interface,
uint32_t version)
{
GtkIMContextWaylandGlobal *global = data;
GdkSeat *seat = gdk_display_get_default_seat (gdk_display_get_default ());
if (strcmp (interface, "zwp_text_input_manager_v3") == 0)
{
global->text_input_manager_wl_id = id;
global->text_input_manager =
wl_registry_bind (global->registry, global->text_input_manager_wl_id,
&zwp_text_input_manager_v3_interface, 1);
global->text_input =
zwp_text_input_manager_v3_get_text_input (global->text_input_manager,
gdk_wayland_seat_get_wl_seat (seat));
global->serial = 0;
zwp_text_input_v3_add_listener (global->text_input,
&text_input_listener, global);
}
}
static void
registry_handle_global_remove (void *data,
struct wl_registry *registry,
uint32_t id)
{
GtkIMContextWaylandGlobal *global = data;
if (id != global->text_input_manager_wl_id)
return;
g_clear_pointer (&global->text_input, zwp_text_input_v3_destroy);
g_clear_pointer (&global->text_input_manager, zwp_text_input_manager_v3_destroy);
}
static const struct wl_registry_listener registry_listener = {
registry_handle_global,
registry_handle_global_remove
};
static void
gtk_im_context_wayland_global_free (gpointer data)
{
GtkIMContextWaylandGlobal *global = data;
g_free (global);
}
static GtkIMContextWaylandGlobal *
gtk_im_context_wayland_global_get (GdkDisplay *display)
{
GtkIMContextWaylandGlobal *global;
global = g_object_get_data (G_OBJECT (display), "gtk-im-context-wayland-global");
if (global != NULL)
return global;
global = g_new0 (GtkIMContextWaylandGlobal, 1);
global->display = gdk_wayland_display_get_wl_display (display);
global->registry = wl_display_get_registry (global->display);
wl_registry_add_listener (global->registry, &registry_listener, global);
g_object_set_data_full (G_OBJECT (display),
"gtk-im-context-wayland-global",
global,
gtk_im_context_wayland_global_free);
return global;
}
static void
gtk_im_context_wayland_focus_in (GtkIMContext *context)
{
GtkIMContextWayland *self = GTK_IM_CONTEXT_WAYLAND (context);
GtkIMContextWaylandGlobal *global;
if (self->widget == NULL)
return;
global = gtk_im_context_wayland_global_get (gtk_widget_get_display (self->widget));
if (global->current == context)
return;
global->current = context;
if (!global->text_input)
return;
if (self->gesture)
gtk_event_controller_reset (GTK_EVENT_CONTROLLER (self->gesture));
if (global->focused)
enable (self, global);
}
static void
gtk_im_context_wayland_focus_out (GtkIMContext *context)
{
GtkIMContextWayland *self = GTK_IM_CONTEXT_WAYLAND (context);
GtkIMContextWaylandGlobal *global;
global = gtk_im_context_wayland_get_global (self);
if (global == NULL)
return;
if (global->focused)
disable (self, global);
global->current = NULL;
}
static void
gtk_im_context_wayland_reset (GtkIMContext *context)
{
notify_im_change (GTK_IM_CONTEXT_WAYLAND (context),
ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_OTHER);
GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->reset (context);
}
static void
gtk_im_context_wayland_set_cursor_location (GtkIMContext *context,
GdkRectangle *rect)
{
GtkIMContextWayland *context_wayland;
int side;
context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (context_wayland->cursor_rect.x == rect->x &&
context_wayland->cursor_rect.y == rect->y &&
context_wayland->cursor_rect.width == rect->width &&
context_wayland->cursor_rect.height == rect->height)
return;
/* Reset the gesture if the cursor changes too far (eg. clicking
* between disjoint positions in the text).
*
* Still Allow some jittering (a square almost double the cursor rect height
* on either side) as clicking on the exact same position between characters
* is hard.
*/
side = context_wayland->cursor_rect.height;
if (context_wayland->gesture &&
(ABS (rect->x - context_wayland->cursor_rect.x) >= side ||
ABS (rect->y - context_wayland->cursor_rect.y) >= side))
gtk_event_controller_reset (GTK_EVENT_CONTROLLER (context_wayland->gesture));
context_wayland->cursor_rect = *rect;
}
static void
gtk_im_context_wayland_set_use_preedit (GtkIMContext *context,
gboolean use_preedit)
{
GtkIMContextWayland *context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
context_wayland->use_preedit = !!use_preedit;
}
static void
gtk_im_context_wayland_set_surrounding (GtkIMContext *context,
const char *text,
int len,
int cursor_index,
int selection_bound)
{
GtkIMContextWayland *context_wayland;
context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (context_wayland->surrounding.text && text &&
(len < 0 || len == strlen (context_wayland->surrounding.text)) &&
strncmp (context_wayland->surrounding.text, text, len) == 0 &&
context_wayland->surrounding.cursor_idx == cursor_index &&
context_wayland->surrounding.anchor_idx == selection_bound)
return;
g_free (context_wayland->surrounding.text);
context_wayland->surrounding.text = g_strndup (text, len);
context_wayland->surrounding.cursor_idx = cursor_index;
context_wayland->surrounding.anchor_idx = selection_bound;
}
static gboolean
gtk_im_context_wayland_get_surrounding (GtkIMContext *context,
char **text,
int *cursor_index,
int *selection_bound)
{
GtkIMContextWayland *context_wayland;
context_wayland = GTK_IM_CONTEXT_WAYLAND (context);
if (!context_wayland->surrounding.text)
return FALSE;
*text = context_wayland->surrounding.text;
*cursor_index = context_wayland->surrounding.cursor_idx;
*selection_bound = context_wayland->surrounding.anchor_idx;
return TRUE;
}
static void
gtk_im_context_wayland_commit (GtkIMContext *context,
const gchar *str)
{
if (GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->commit)
GTK_IM_CONTEXT_CLASS (gtk_im_context_wayland_parent_class)->commit (context, str);
notify_im_change (GTK_IM_CONTEXT_WAYLAND (context),
ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_INPUT_METHOD);
}
static void
gtk_im_context_wayland_activate_osk (GtkIMContext *context)
{
GtkIMContextWaylandGlobal *global;
global = gtk_im_context_wayland_get_global (GTK_IM_CONTEXT_WAYLAND (context));
if (global == NULL)
return;
zwp_text_input_v3_enable (global->text_input);
notify_im_change (GTK_IM_CONTEXT_WAYLAND (context),
ZWP_TEXT_INPUT_V3_CHANGE_CAUSE_OTHER);
}
static void
gtk_im_context_wayland_class_init (GtkIMContextWaylandClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
GtkIMContextClass *im_context_class = GTK_IM_CONTEXT_CLASS (klass);
object_class->finalize = gtk_im_context_wayland_finalize;
im_context_class->set_client_widget = gtk_im_context_wayland_set_client_widget;
im_context_class->get_preedit_string = gtk_im_context_wayland_get_preedit_string;
im_context_class->filter_keypress = gtk_im_context_wayland_filter_keypress;
im_context_class->focus_in = gtk_im_context_wayland_focus_in;
im_context_class->focus_out = gtk_im_context_wayland_focus_out;
im_context_class->reset = gtk_im_context_wayland_reset;
im_context_class->set_cursor_location = gtk_im_context_wayland_set_cursor_location;
im_context_class->set_use_preedit = gtk_im_context_wayland_set_use_preedit;
im_context_class->set_surrounding_with_selection = gtk_im_context_wayland_set_surrounding;
im_context_class->get_surrounding_with_selection = gtk_im_context_wayland_get_surrounding;
im_context_class->commit = gtk_im_context_wayland_commit;
im_context_class->activate_osk = gtk_im_context_wayland_activate_osk;
}
static void
on_content_type_changed (GtkIMContextWayland *context)
{
notify_content_type (context);
commit_state (context);
}
static void
gtk_im_context_wayland_init (GtkIMContextWayland *context)
{
context->use_preedit = TRUE;
g_signal_connect_swapped (context, "notify::input-purpose",
G_CALLBACK (on_content_type_changed), context);
g_signal_connect_swapped (context, "notify::input-hints",
G_CALLBACK (on_content_type_changed), context);
}
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