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Functions
fl_key_embedder_responder.h File Reference
`#include "flutter/shell/platform/linux/fl_engine_private.h"`
`#include "flutter/shell/platform/linux/fl_key_event.h"`

Go to the source code of this file.

## Functions
G_BEGIN_DECLS | G_DECLARE_FINAL_TYPE (FlKeyEmbedderResponder, fl_key_embedder_responder, FL, KEY_EMBEDDER_RESPONDER, GObject)
FlKeyEmbedderResponder * | fl_key_embedder_responder_new (FlEngine *engine)
void | fl_key_embedder_responder_handle_event (FlKeyEmbedderResponder *responder, FlKeyEvent *event, uint64_t specified_logical_key, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data)
gboolean | fl_key_embedder_responder_handle_event_finish (FlKeyEmbedderResponder *responder, GAsyncResult *result, gboolean *handled, GError **error)
void | fl_key_embedder_responder_sync_modifiers_if_needed (FlKeyEmbedderResponder *responder, guint state, double event_time)
GHashTable * | fl_key_embedder_responder_get_pressed_state (FlKeyEmbedderResponder *responder)

## Function Documentation

## ◆ fl_key_embedder_responder_get_pressed_state()

GHashTable* fl_key_embedder_responder_get_pressed_state | ( | FlKeyEmbedderResponder * | responder | ) |

fl_key_embedder_responder_get_pressed_state: @responder: the #FlKeyEmbedderResponder self.

Returns the keyboard pressed state. The hash table contains one entry per pressed keys, mapping from the logical key to the physical key.

Definition at line 783 of file fl_key_embedder_responder.cc.

784 {
785 return self->pressing_records;
786 }

Referenced by fl_keyboard_manager_get_pressed_state().

## ◆ fl_key_embedder_responder_handle_event()

void fl_key_embedder_responder_handle_event | ( | FlKeyEmbedderResponder * | responder,
|  | FlKeyEvent * | event,
|  | uint64_t | specified_logical_key,
|  | GCancellable * | cancellable,
|  | GAsyncReadyCallback | callback,
|  | gpointer | user_data
| ) |  |

fl_key_embedder_responder_handle_event: @responder: the #FlKeyEmbedderResponder self. @event: the event to be handled. Must not be null. The object is managed by callee and must not be assumed available after this function. @specified_logical_key: @cancellable: (allow-none): a #GCancellable or NULL. @callback: (scope async): a #GAsyncReadyCallback to call when the view is added. @user_data: (closure): user data to pass to @callback.

Let the responder handle an event, expecting the responder to report whether to handle the event.

Definition at line 737 of file fl_key_embedder_responder.cc.

742 {
743 g_autoptr(GTask) task = g_task_new(self, cancellable, callback, user_data);
744
745 self->sent_any_events = false;
746 fl_key_embedder_responder_handle_event_impl(self, event,
747 specified_logical_key, task);
748 if (!self->sent_any_events) {
749 g_autoptr(FlEngine) engine = FL_ENGINE(g_weak_ref_get(&self->engine));
750 if (engine != nullptr) {
751 fl_engine_send_key_event(engine, &kEmptyEvent, self->cancellable, nullptr,
752 nullptr);
753 }
754 }
755 }
g_autoptr
g_autoptr(FlEngine) engine
user_data
const char FlTextDirection FlAssertiveness gpointer user_data
Definition: fl_accessibility_handler.cc:24
fl_engine_send_key_event
void fl_engine_send_key_event(FlEngine *self, const FlutterKeyEvent *event, GCancellable *cancellable, GAsyncReadyCallback callback, gpointer user_data)
Definition: fl_engine.cc:1360
kEmptyEvent
static const FlutterKeyEvent kEmptyEvent
Definition: fl_key_embedder_responder.cc:16
fl_key_embedder_responder_handle_event_impl
static void fl_key_embedder_responder_handle_event_impl(FlKeyEmbedderResponder *responder, FlKeyEvent *event, uint64_t specified_logical_key, GTask *task)
Definition: fl_key_embedder_responder.cc:642

References fl_engine_send_key_event(), fl_key_embedder_responder_handle_event_impl(), g_autoptr(), kEmptyEvent, and user_data.

Referenced by fl_keyboard_manager_handle_event(), and TEST().

## ◆ fl_key_embedder_responder_handle_event_finish()

gboolean fl_key_embedder_responder_handle_event_finish | ( | FlKeyEmbedderResponder * | responder,
|  | GAsyncResult * | result,
|  | gboolean * | handled,
|  | GError ** | error
| ) |  |

fl_key_embedder_responder_handle_event_finish: @responder: an #FlKeyEmbedderResponder.

Returns
  : a #GAsyncResult. @handled: location to write if this event was handled by the embedder. @error: (allow-none): #GError location to store the error occurring, or NULL to ignore. If `error` is not NULL, `*error` must be initialized (typically NULL, but an error from a previous call using GLib error handling is explicitly valid).

Completes request started with fl_key_embedder_responder_handle_event().

Returns TRUE on success.

Definition at line 757 of file fl_key_embedder_responder.cc.

761 {
762 g_return_val_if_fail(g_task_is_valid(result, self), FALSE);
763
764 g_autofree gboolean* return_value =
765 static_cast<gboolean*>(g_task_propagate_pointer(G_TASK(result), error));
766 if (return_value == nullptr) {
767 return FALSE;
768 }
769
770 *handled = *return_value;
771 return TRUE;
772 }
TRUE
return TRUE
Definition: fl_compositor_software.cc:68
error
const uint8_t uint32_t uint32_t GError ** error
Definition: fl_pixel_buffer_texture_test.cc:40

References error, and TRUE.

Referenced by responder_handle_embedder_event_cb(), and TEST().

## ◆ fl_key_embedder_responder_new()

FlKeyEmbedderResponder* fl_key_embedder_responder_new | ( | FlEngine * | engine | ) |

FlKeyEmbedderResponder:

A #FlKeyResponder that handles events by sending the converted events through the embedder API.

This class communicates with the HardwareKeyboard API in the framework. fl_key_embedder_responder_new: @engine: The #FlEngine, whose the embedder API will be used to send the event.

Creates a new #FlKeyEmbedderResponder.

Returns: a new #FlKeyEmbedderResponder.

Definition at line 181 of file fl_key_embedder_responder.cc.

181 {
182 FlKeyEmbedderResponder* self = FL_KEY_EMBEDDER_RESPONDER(
183 g_object_new(fl_key_embedder_responder_get_type(), nullptr));
184
185 g_weak_ref_init(&self->engine, engine);
186
187 self->pressing_records = g_hash_table_new(g_direct_hash, g_direct_equal);
188 self->mapping_records = g_hash_table_new(g_direct_hash, g_direct_equal);
189 self->lock_records = 0;
190 self->caps_lock_state_logic_inferrence = STATE_LOGIC_INFERRENCE_UNDECIDED;
191
192 self->modifier_bit_to_checked_keys =
193 g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, g_free);
194 initialize_modifier_bit_to_checked_keys(self->modifier_bit_to_checked_keys);
195
196 self->lock_bit_to_checked_keys =
197 g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, g_free);
198 initialize_lock_bit_to_checked_keys(self->lock_bit_to_checked_keys);
199
200 // Associate a logical key with its corresponding modifier bit.
201 self->logical_key_to_lock_bit =
202 g_hash_table_new(g_direct_hash, g_direct_equal);
203 GHashTableIter iter;
204 g_hash_table_iter_init(&iter, self->lock_bit_to_checked_keys);
205 gpointer key, value;
206 while (g_hash_table_iter_next(&iter, &key, &value)) {
207 guint lock_bit = GPOINTER_TO_UINT(key);
208 FlKeyEmbedderCheckedKey* checked_key =
209 reinterpret_cast<FlKeyEmbedderCheckedKey*>(value);
210 g_hash_table_insert(self->logical_key_to_lock_bit,
211 uint64_to_gpointer(checked_key->primary_logical_key),
212 GUINT_TO_POINTER(lock_bit));
213 }
214
215 return self;
216 }
value
uint8_t value
Definition: fl_standard_message_codec.cc:36
initialize_modifier_bit_to_checked_keys
void initialize_modifier_bit_to_checked_keys(GHashTable *table)
Definition: key_mapping.g.cc:414
initialize_lock_bit_to_checked_keys
void initialize_lock_bit_to_checked_keys(GHashTable *table)
Definition: key_mapping.g.cc:446
uint64_to_gpointer
gpointer uint64_to_gpointer(uint64_t number)
Definition: key_mapping.h:17
FlKeyEmbedderCheckedKey
Definition: fl_key_embedder_responder_private.h:33
FlKeyEmbedderCheckedKey::primary_logical_key
uint64_t primary_logical_key
Definition: fl_key_embedder_responder_private.h:37

References initialize_lock_bit_to_checked_keys(), initialize_modifier_bit_to_checked_keys(), FlKeyEmbedderCheckedKey::primary_logical_key, uint64_to_gpointer(), and value.

Referenced by fl_keyboard_manager_new(), and TEST().

## ◆ fl_key_embedder_responder_sync_modifiers_if_needed()

void fl_key_embedder_responder_sync_modifiers_if_needed | ( | FlKeyEmbedderResponder * | responder,
|  | guint | state,
|  | double | event_time
| ) |  |

fl_key_embedder_responder_sync_modifiers_if_needed: @responder: the #FlKeyEmbedderResponder self. @state: the state of the modifiers mask. @event_time: the time attribute of the incoming GDK event.

If needed, synthesize modifier keys up and down event by comparing their current pressing states with the given modifiers mask.

Definition at line 774 of file fl_key_embedder_responder.cc.

777 {
778 g_return_if_fail(FL_IS_KEY_EMBEDDER_RESPONDER(self));
779 synchronize_pressed_states(self, state,
780 event_time * kMicrosecondsPerMillisecond);
781 }
synchronize_pressed_states
static void synchronize_pressed_states(FlKeyEmbedderResponder *self, guint state, double timestamp)
Definition: fl_key_embedder_responder.cc:334
kMicrosecondsPerMillisecond
constexpr uint64_t kMicrosecondsPerMillisecond
Definition: fl_key_embedder_responder.cc:14

References kMicrosecondsPerMillisecond, and synchronize_pressed_states().

Referenced by fl_keyboard_manager_sync_modifier_if_needed().

## ◆ G_DECLARE_FINAL_TYPE()

G_BEGIN_DECLS G_DECLARE_FINAL_TYPE | ( | FlKeyEmbedderResponder | ,
|  | fl_key_embedder_responder | ,
|  | FL | ,
|  | KEY_EMBEDDER_RESPONDER | ,
|  | GObject |
| ) |  |