2 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <imf-manager-impl.h>
22 #include <dali/public-api/events/key-event.h>
23 #include <dali/public-api/object/type-registry.h>
24 #include <dali/integration-api/debug.h>
28 #include <window-render-surface.h>
29 #include <adaptor-impl.h>
30 #include <singleton-service-impl.h>
31 #include <virtual-keyboard-impl.h>
32 #include "ecore-virtual-keyboard.h"
45 #if defined(DEBUG_ENABLED)
46 Debug::Filter* gLogFilter = Debug::Filter::New(Debug::NoLogging, false, "LOG_IMF_MANAGER");
49 // Currently this code is internal to dali/dali/internal/event/text/utf8.h but should be made Public and used from there instead.
50 size_t Utf8SequenceLength(const unsigned char leadByte)
54 if ((leadByte & 0x80) == 0 ) //ASCII character (lead bit zero)
58 else if (( leadByte & 0xe0 ) == 0xc0 ) //110x xxxx
62 else if (( leadByte & 0xf0 ) == 0xe0 ) //1110 xxxx
66 else if (( leadByte & 0xf8 ) == 0xf0 ) //1111 0xxx
74 // Static function calls used by ecore 'c' style callback registration
75 void Commit( void *data, Ecore_IMF_Context *imfContext, void *event_info )
79 ImfManager* imfManager = reinterpret_cast< ImfManager* > ( data );
80 imfManager->CommitReceived( data, imfContext, event_info );
84 void PreEdit( void *data, Ecore_IMF_Context *imfContext, void *event_info )
88 ImfManager* imfManager = reinterpret_cast< ImfManager* > ( data );
89 imfManager->PreEditChanged( data, imfContext, event_info );
93 Eina_Bool ImfRetrieveSurrounding(void *data, Ecore_IMF_Context *imfContext, char** text, int* cursorPosition )
97 ImfManager* imfManager = reinterpret_cast< ImfManager* > ( data );
98 return imfManager->RetrieveSurrounding( data, imfContext, text, cursorPosition );
107 * Called when an IMF delete surrounding event is received.
108 * Here we tell the application that it should delete a certain range.
110 void ImfDeleteSurrounding( void *data, Ecore_IMF_Context *imfContext, void *event_info )
114 ImfManager* imfManager = reinterpret_cast< ImfManager* > ( data );
115 imfManager->DeleteSurrounding( data, imfContext, event_info );
121 return ImfManager::Get();
124 TypeRegistration IMF_MANAGER_TYPE( typeid(Dali::ImfManager), typeid(Dali::BaseHandle), Create );
126 } // unnamed namespace
128 bool ImfManager::IsAvailable()
130 bool available( false );
132 Dali::SingletonService service( SingletonService::Get() );
135 available = service.GetSingleton( typeid( Dali::ImfManager ) );
141 Dali::ImfManager ImfManager::Get()
143 Dali::ImfManager manager;
145 Dali::SingletonService service( SingletonService::Get() );
148 // Check whether the singleton is already created
149 Dali::BaseHandle handle = service.GetSingleton( typeid( Dali::ImfManager ) );
152 // If so, downcast the handle
153 manager = Dali::ImfManager( dynamic_cast< ImfManager* >( handle.GetObjectPtr() ) );
155 else if ( Adaptor::IsAvailable() )
157 // Create instance and register singleton only if the adaptor is available
159 Adaptor& adaptorImpl( Adaptor::GetImplementation( Adaptor::Get() ) );
160 Any nativeWindow = adaptorImpl.GetNativeWindowHandle();
162 // The Ecore_X_Window needs to use the ImfManager.
163 // Only when the render surface is window, we can get the Ecore_X_Window.
164 Ecore_X_Window ecoreXwin( AnyCast<Ecore_X_Window>(nativeWindow) );
167 // If we fail to get Ecore_X_Window, we can't use the ImfManager correctly.
168 // Thus you have to call "ecore_imf_context_client_window_set" somewhere.
169 // In EvasPlugIn, this function is called in EvasPlugin::ConnectEcoreEvent().
171 manager = Dali::ImfManager( new ImfManager( ecoreXwin ) );
172 service.Register( typeid( manager ), manager );
176 DALI_LOG_ERROR("Failed to get native window handle");
184 ImfManager::ImfManager( Ecore_X_Window ecoreXwin )
186 mIMFCursorPosition( 0 ),
188 mRestoreAfterFocusLost( false ),
189 mIdleCallbackConnected( false )
192 CreateContext( ecoreXwin );
195 VirtualKeyboard::ConnectCallbacks( mIMFContext );
198 ImfManager::~ImfManager()
200 VirtualKeyboard::DisconnectCallbacks( mIMFContext );
201 DisconnectCallbacks();
204 ecore_imf_shutdown();
207 void ImfManager::CreateContext( Ecore_X_Window ecoreXwin )
209 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::CreateContext\n" );
211 const char *contextId = ecore_imf_context_default_id_get();
214 mIMFContext = ecore_imf_context_add( contextId );
220 ecore_imf_context_client_window_set( mIMFContext, reinterpret_cast<void*>( ecoreXwin ) );
225 DALI_LOG_WARNING("IMF Unable to get IMF Context\n");
230 DALI_LOG_WARNING("IMF Unable to get IMF Context\n");
234 void ImfManager::DeleteContext()
236 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::DeleteContext\n" );
244 // Callbacks for predicitive text support.
245 void ImfManager::ConnectCallbacks()
249 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::ConnectCallbacks\n" );
251 ecore_imf_context_event_callback_add( mIMFContext, ECORE_IMF_CALLBACK_PREEDIT_CHANGED, PreEdit, this );
252 ecore_imf_context_event_callback_add( mIMFContext, ECORE_IMF_CALLBACK_COMMIT, Commit, this );
253 ecore_imf_context_event_callback_add( mIMFContext, ECORE_IMF_CALLBACK_DELETE_SURROUNDING, ImfDeleteSurrounding, this );
255 ecore_imf_context_retrieve_surrounding_callback_set( mIMFContext, ImfRetrieveSurrounding, this);
259 void ImfManager::DisconnectCallbacks()
263 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::DisconnectCallbacks\n" );
265 ecore_imf_context_event_callback_del( mIMFContext, ECORE_IMF_CALLBACK_PREEDIT_CHANGED, PreEdit );
266 ecore_imf_context_event_callback_del( mIMFContext, ECORE_IMF_CALLBACK_COMMIT, Commit );
267 ecore_imf_context_event_callback_del( mIMFContext, ECORE_IMF_CALLBACK_DELETE_SURROUNDING, ImfDeleteSurrounding );
269 // We do not need to unset the retrieve surrounding callback.
273 void ImfManager::Activate()
275 // Reset mIdleCallbackConnected
276 mIdleCallbackConnected = false;
280 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::Activate\n" );
282 ecore_imf_context_focus_in( mIMFContext );
284 // emit keyboard activated signal
285 Dali::ImfManager handle( this );
286 mActivatedSignal.Emit( handle );
290 void ImfManager::Deactivate()
294 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::Deactivate\n" );
297 ecore_imf_context_focus_out( mIMFContext );
300 // Reset mIdleCallbackConnected
301 mIdleCallbackConnected = false;
304 void ImfManager::Reset()
306 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::Reset\n" );
310 ecore_imf_context_reset( mIMFContext );
314 Ecore_IMF_Context* ImfManager::GetContext()
316 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::GetContext\n" );
321 bool ImfManager::RestoreAfterFocusLost() const
323 return mRestoreAfterFocusLost;
326 void ImfManager::SetRestoreAfterFocusLost( bool toggle )
328 mRestoreAfterFocusLost = toggle;
332 * Called when an IMF Pre-Edit changed event is received.
333 * We are still predicting what the user is typing. The latest string is what the IMF module thinks
334 * the user wants to type.
336 void ImfManager::PreEditChanged( void*, Ecore_IMF_Context* imfContext, void* event_info )
338 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::PreEditChanged\n" );
340 char* preEditString( NULL );
341 int cursorPosition( 0 );
342 Eina_List* attrs = NULL;
345 Ecore_IMF_Preedit_Attr* attr;
347 // Retrieves attributes as well as the string the cursor position offset from start of pre-edit string.
348 // the attributes (attrs) is used in languages that use the soft arrows keys to insert characters into a current pre-edit string.
349 ecore_imf_context_preedit_string_with_attributes_get( imfContext, &preEditString, &attrs, &cursorPosition );
353 // iterate through the list of attributes getting the type, start and end position.
354 for ( l = attrs, (attr = static_cast<Ecore_IMF_Preedit_Attr*>( eina_list_data_get(l) ) ); l; l = eina_list_next(l), ( attr = static_cast<Ecore_IMF_Preedit_Attr*>( eina_list_data_get(l) ) ))
356 #ifdef DALI_PROFILE_UBUNTU
357 if ( attr->preedit_type == ECORE_IMF_PREEDIT_TYPE_SUB3 ) // (Ecore_IMF)
358 #else // DALI_PROFILE_UBUNTU
359 if ( attr->preedit_type == ECORE_IMF_PREEDIT_TYPE_SUB4 ) // (Ecore_IMF)
360 #endif // DALI_PROFILE_UBUNTU
362 // check first byte so know how many bytes a character is represented by as keyboard returns cursor position in bytes. Which is different for some languages.
364 size_t visualCharacterIndex = 0;
365 size_t byteIndex = 0;
367 // iterate through null terminated string checking each character's position against the given byte position ( attr->end_index ).
368 const char leadByte = preEditString[byteIndex];
369 while( leadByte != '\0' )
371 // attr->end_index is provided as a byte position not character and we need to know the character position.
372 const size_t currentSequenceLength = Utf8SequenceLength( leadByte ); // returns number of bytes used to represent character.
373 if ( byteIndex == attr->end_index )
375 cursorPosition = visualCharacterIndex;
377 // end loop as found cursor position that matches byte position
381 byteIndex += currentSequenceLength; // jump to next character
382 visualCharacterIndex++; // increment character count so we know our position for when we get a match
385 DALI_ASSERT_DEBUG( visualCharacterIndex < strlen( preEditString ));
391 if ( Dali::Adaptor::IsAvailable() )
393 Dali::ImfManager handle( this );
394 Dali::ImfManager::ImfEventData imfEventData( Dali::ImfManager::PREEDIT, preEditString, cursorPosition, 0 );
395 Dali::ImfManager::ImfCallbackData callbackData = mEventSignal.Emit( handle, imfEventData );
397 if ( callbackData.update )
399 SetCursorPosition( callbackData.cursorPosition );
400 SetSurroundingText( callbackData.currentText );
402 NotifyCursorPosition();
405 if ( callbackData.preeditResetRequired )
410 free( preEditString );
413 void ImfManager::CommitReceived( void*, Ecore_IMF_Context* imfContext, void* event_info )
415 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::CommitReceived\n" );
417 if ( Dali::Adaptor::IsAvailable() )
419 const std::string keyString( static_cast<char*>( event_info ) );
421 Dali::ImfManager handle( this );
422 Dali::ImfManager::ImfEventData imfEventData( Dali::ImfManager::COMMIT, keyString, 0, 0 );
423 Dali::ImfManager::ImfCallbackData callbackData = mEventSignal.Emit( handle, imfEventData );
425 if( callbackData.update )
427 SetCursorPosition( callbackData.cursorPosition );
428 SetSurroundingText( callbackData.currentText );
430 NotifyCursorPosition();
436 * Called when an IMF retrieve surround event is received.
437 * Here the IMF module wishes to know the string we are working with and where within the string the cursor is
438 * We need to signal the application to tell us this information.
440 Eina_Bool ImfManager::RetrieveSurrounding( void* data, Ecore_IMF_Context* imfContext, char** text, int* cursorPosition )
442 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::RetrieveSurrounding\n" );
444 Dali::ImfManager::ImfEventData imfData( Dali::ImfManager::GETSURROUNDING, std::string(), 0, 0 );
445 Dali::ImfManager handle( this );
446 mEventSignal.Emit( handle, imfData );
450 *text = strdup( mSurroundingText.c_str() );
455 *cursorPosition = mIMFCursorPosition;
462 * Called when an IMF delete surrounding event is received.
463 * Here we tell the application that it should delete a certain range.
465 void ImfManager::DeleteSurrounding( void* data, Ecore_IMF_Context* imfContext, void* event_info )
467 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::DeleteSurrounding\n" );
469 if( Dali::Adaptor::IsAvailable() )
471 Ecore_IMF_Event_Delete_Surrounding* deleteSurroundingEvent = static_cast<Ecore_IMF_Event_Delete_Surrounding*>( event_info );
473 Dali::ImfManager::ImfEventData imfData( Dali::ImfManager::DELETESURROUNDING, std::string(), deleteSurroundingEvent->offset, deleteSurroundingEvent->n_chars );
474 Dali::ImfManager handle( this );
475 mEventSignal.Emit( handle, imfData );
479 void ImfManager::NotifyCursorPosition()
481 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::NotifyCursorPosition\n" );
485 ecore_imf_context_cursor_position_set( mIMFContext, mIMFCursorPosition );
489 void ImfManager::SetCursorPosition( unsigned int cursorPosition )
491 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::SetCursorPosition\n" );
493 mIMFCursorPosition = static_cast<int>( cursorPosition );
496 unsigned int ImfManager::GetCursorPosition() const
498 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::GetCursorPosition\n" );
500 return static_cast<unsigned int>( mIMFCursorPosition );
503 void ImfManager::SetSurroundingText( const std::string& text )
505 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::SetSurroundingText\n" );
507 mSurroundingText = text;
510 const std::string& ImfManager::GetSurroundingText() const
512 DALI_LOG_INFO( gLogFilter, Debug::General, "ImfManager::GetSurroundingText\n" );
514 return mSurroundingText;