1 #ifndef DALI_ATSPI_ACCESSIBILITY_H
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2 #define DALI_ATSPI_ACCESSIBILITY_H
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4 * Copyright (c) 2019 Samsung Electronics Co., Ltd.
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6 * Licensed under the Apache License, Version 2.0 (the "License");
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7 * you may not use this file except in compliance with the License.
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8 * You may obtain a copy of the License at
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10 * http://www.apache.org/licenses/LICENSE-2.0
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12 * Unless required by applicable law or agreed to in writing, software
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13 * distributed under the License is distributed on an "AS IS" BASIS,
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14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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15 * See the License for the specific language governing permissions and
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16 * limitations under the License.
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20 // EXTERNAL INCLUDES
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24 #include <exception>
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25 #include <functional>
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29 #include <unordered_map>
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36 // INTERNAL INCLUDES
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37 #include <dali/public-api/dali-adaptor-common.h>
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41 namespace Accessibility
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45 * @brief Enumeration describing a relation between accessible objects
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46 * 1 to 0..N relation model is supported. By default relation is not symmetrical.
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47 * Symmetry must be explicitly maintained.
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49 enum class RelationType : uint32_t
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51 NULL_OF, ///< Null Relation.
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52 LABEL_FOR, ///< Label For.
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53 LABELLED_BY, ///< Labelled By.
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54 CONTROLLER_FOR, ///< Controller For.
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55 CONTROLLED_BY, ///< Controlled By.
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56 MEMBER_OF, ///< Member Of.
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57 TOOLTIP_FOR, ///< ToolTip For.
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58 NODE_CHILD_OF, ///< Node Child Of.
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59 NODE_PARENT_OF, ///< Node Parent Of.
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60 EXTENDED, ///< Extended.
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61 FLOWS_TO, ///< Flows To.
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62 FLOWS_FROM, ///< Flows From.
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63 SUBWINDOW_OF, ///< Sub Window Of.
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64 EMBEDS, ///< Embeds.
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65 EMBEDDED_BY, ///< Embedded By.
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66 POPUP_FOR, ///< Popup For
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67 PARENT_WINDOW_OF, ///< Parent Window Of.
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68 DESCRIPTION_FOR, ///< Description For.
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69 DESCRIBED_BY, ///< Described By.
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70 DETAILS, ///< Details.
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71 DETAILS_FOR, ///< Details For.
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72 ERROR_MESSAGE, ///< Error Message.
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73 ERROR_FOR, ///< Error For.
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78 * @brief Enumeration describing if coordinates are relative to screen or window
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79 * @see Accessibility::Component::GetExtents
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80 * @see Accessibility::Component::Contains
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82 enum class CoordType
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84 SCREEN, ///< Screen.
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89 * @brief Enumeration indicating relative stacking order
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90 * ComponentLayer allows to describe visibility of all parts of UI
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91 * basing on the concrete stacking order
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92 * @see Accessibility::Component::GetLayer
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93 * @note currently only ComponentLayer::Window is supported
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95 enum class ComponentLayer
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97 INVALID, ///< Invalid.
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98 BACKGROUND, ///< Background.
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99 CANVAS, ///< Canvas.
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100 WIDGET, ///< Widget.
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103 OVERLAY, ///< Overlay.
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104 WINDOW, ///< Window.
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109 * @brief Enumeration describing role of the Accessibility object
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110 * Object can be described by only one role.
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111 * @see Accessibility::Accessible::GetRole
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113 enum class Role : uint32_t
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172 TABLE_COLUMN_HEADER,
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204 INPUT_METHOD_WINDOW,
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207 DOCUMENT_SPREADSHEET,
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208 DOCUMENT_PRESENTATION,
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240 * @brief Enumeration describing states of the Accessibility object
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241 * Object can be in many states at the same time.
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242 * @see Accessibility::Accessible::GetStates
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244 enum class State : uint32_t
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277 MANAGES_DESCENDANTS,
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283 SUPPORTS_AUTOCOMPLETION,
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296 * @brief Enumeration describing change of text object
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298 enum class TextChangedState : uint32_t
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306 * @brief Enumeration describing change of object property
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308 enum class ObjectPropertyChangeEvent
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318 * @brief Enumeration describing change of window object
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319 * @see Accessibility::Accessible::Emit
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321 enum class WindowEvent
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345 * @brief Enumeration used to acquire bounded text from accessible object having textual content.
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346 * @see Accessibility::Text::GetTextAtOffset
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347 * @note Currently only TextBoundary::Character is supported
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349 enum class TextBoundary : uint32_t
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351 CHARACTER, ///> Only one character is acquired.
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352 WORD, ///> Not supported.
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353 SENTENCE, ///> Not supported.
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354 LINE, ///> Not supported.
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355 PARAGRAPH, ///> Not supported.
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360 * @brief Enumeration describing type of gesture
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361 * @see Accessibility::Accessible::DoGesture
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363 enum class Gesture : int32_t
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367 THREE_FINGER_HOVER,
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368 ONE_FINGER_FLICK_LEFT,
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369 ONE_FINGER_FLICK_RIGHT,
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370 ONE_FINGER_FLICK_UP,
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371 ONE_FINGER_FLICK_DOWN,
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372 TWO_FINGERS_FLICK_LEFT,
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373 TWO_FINGERS_FLICK_RIGHT,
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374 TWO_FINGERS_FLICK_UP,
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375 TWO_FINGERS_FLICK_DOWN,
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376 THREE_FINGERS_FLICK_LEFT,
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377 THREE_FINGERS_FLICK_RIGHT,
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378 THREE_FINGERS_FLICK_UP,
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379 THREE_FINGERS_FLICK_DOWN,
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380 ONE_FINGER_SINGLE_TAP,
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381 ONE_FINGER_DOUBLE_TAP,
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382 ONE_FINGER_TRIPLE_TAP,
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383 TWO_FINGERS_SINGLE_TAP,
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384 TWO_FINGERS_DOUBLE_TAP,
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385 TWO_FINGERS_TRIPLE_TAP,
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386 THREE_FINGERS_SINGLE_TAP,
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387 THREE_FINGERS_DOUBLE_TAP,
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388 THREE_FINGERS_TRIPLE_TAP,
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389 ONE_FINGER_FLICK_LEFT_RETURN,
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390 ONE_FINGER_FLICK_RIGHT_RETURN,
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391 ONE_FINGER_FLICK_UP_RETURN,
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392 ONE_FINGER_FLICK_DOWN_RETURN,
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393 TWO_FINGERS_FLICK_LEFT_RETURN,
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394 TWO_FINGERS_FLICK_RIGHT_RETURN,
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395 TWO_FINGERS_FLICK_UP_RETURN,
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396 TWO_FINGERS_FLICK_DOWN_RETURN,
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397 THREE_FINGERS_FLICK_LEFT_RETURN,
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398 THREE_FINGERS_FLICK_RIGHT_RETURN,
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399 THREE_FINGERS_FLICK_UP_RETURN,
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400 THREE_FINGERS_FLICK_DOWN_RETURN,
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401 ONE_FINGER_DOUBLE_TAP_N_HOLD,
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402 TWO_FINGERS_DOUBLE_TAP_N_HOLD,
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403 THREE_FINGERS_DOUBLE_TAP_N_HOLD,
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408 * @brief Enumeration indicating current state of gesture
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409 * @see Dali::Accessibility::GestureInfo
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411 enum class GestureState : int32_t
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420 * @brief Enumeration of ReadingInfoType
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422 enum class ReadingInfoType
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431 * @brief Helper class for storing values treated as bit sets
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432 * This class provides all bitset-like methods for bitset size larger, than long long int
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433 * @see Dali::Accessibility::Accessible::GetStates
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434 * @see Dali::Accessibility::Accessible::GetRoles
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436 template < size_t I, typename S >
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439 std::array< uint32_t, I > data;
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445 static constexpr bool _accepts()
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450 template < typename T > static constexpr bool _accepts()
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452 return std::is_enum< T >::value;
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455 template < typename T, typename T2, typename ... ARGS > static constexpr bool _accepts()
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457 return std::is_enum< T >::value && _accepts< T2, ARGS... >();
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460 template < typename T, typename ... ARGS > void _set(T t, ARGS ... args)
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468 for( auto& u : data )
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473 BitSets(const BitSets&) = default;
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474 BitSets(BitSets&&) = default;
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476 template < typename T, typename ... ARGS, typename std::enable_if< _accepts< T, ARGS... >() >::type * = nullptr >BitSets( T t, ARGS ... args )
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478 for( auto& u : data )
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480 _set( t, args... );
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483 explicit BitSets( std::array< uint32_t, I > d )
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485 for( auto i = 0u; i < I; ++i )
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491 explicit BitSets( std::array< int32_t, I > d )
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493 for( auto i = 0u; i < I; ++i )
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495 data[i] = static_cast<uint32_t>( d[i] );
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499 BitSets& operator = (const BitSets&) = default;
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500 BitSets& operator = (BitSets&&) = default;
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504 std::array< uint32_t, I >& data;
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507 reference& operator=( reference r )
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509 (*this) = static_cast<bool>( r );
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513 reference& operator=( bool v )
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517 data[pos / 32] |= 1 << (pos & 31);
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521 data[pos / 32] &= ~(1 << (pos & 31));
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526 operator bool() const
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528 auto i = static_cast<size_t>( pos );
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529 return (data[i / 32] & (1 << (i & 31))) != 0;
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533 reference operator[]( S index )
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535 return { data, static_cast<size_t>( index ) };
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538 bool operator[]( S index ) const
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540 auto i = static_cast<size_t>( index );
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541 return ( data[i / 32] & ( 1 << (i & 31) ) ) != 0;
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544 std::array< uint32_t, I > GetRawData() const
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549 BitSets operator|( BitSets b ) const
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552 for( auto i = 0u; i < I; ++i )
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554 r.data[i] = data[i] | b.data[i];
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559 BitSets operator^( BitSets b ) const
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562 for( auto i = 0u; i < I; ++i )
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564 r.data[i] = data[i] ^ b.data[i];
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569 BitSets operator&( BitSets b ) const
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572 for( auto i = 0u; i < I; ++i )
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574 r.data[i] = data[i] & b.data[i];
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579 bool operator==( BitSets b ) const
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581 for( auto i = 0u; i < I; ++i )
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583 if( data[i] != b.data[i] )
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591 bool operator!=(BitSets b) const
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593 return !((*this) == b);
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596 explicit operator bool() const
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598 for( auto& u : data )
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608 size_t size() const
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614 using ReadingInfoTypes = BitSets<1, ReadingInfoType>;
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615 using States = BitSets< 2, State >;
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616 using Attributes = std::unordered_map< std::string, std::string >;
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619 * @brief Class representing unique object address on accessibility bus
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620 * @see Dali::Accessibility::Accessible::GetAddress
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625 Address() = default;
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627 Address( std::string bus, std::string path )
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628 : mBus(std::move(bus)),
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629 mPath(std::move(path))
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633 explicit operator bool() const
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635 return !mPath.empty();
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638 std::string ToString() const
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640 return *this ? mBus + ":" + mPath : "::null";
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643 const std::string& GetBus() const;
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645 const std::string& GetPath() const
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650 bool operator == ( const Address& a ) const
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652 return mBus == a.mBus && mPath == a.mPath;
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655 bool operator != ( const Address& a ) const
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657 return !(*this == a);
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661 mutable std::string mBus, mPath;
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665 * @brief Enumeration describing type of key event
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666 * @see Adaptor::AccessibilityObserver::OnAccessibleKeyEvent
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668 enum class KeyEventType
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675 * @brief Enumeration with human readable values describing state of event
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676 * @see Dali::Accessibility::Bridge::Emit
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678 enum class Consumed
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685 * @brief Helper class representing two dimensional point with integer coordinates
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694 Point( int x, int y )
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700 bool operator==(Point p) const
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702 return x == p.x && y == p.y;
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704 bool operator!=(Point p) const
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706 return !(*this == p);
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711 * @brief Helper class representing size of rectangle object with usage of two integer values
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726 bool operator==( Size p ) const
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728 return width == p.width && height == p.height;
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731 bool operator!=( Size p ) const
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733 return !(*this == p);
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738 * @brief Helper class used to store data related with Accessibility::Text interface
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739 * @see Dali::Accessibility::Text::GetTextAtOffset
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740 * @see Dali::Accessibility::Text::GetSelection
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744 int32_t startOffset = 0;
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745 int32_t endOffset = 0;
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746 std::string content;
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750 Range(size_t start, size_t end)
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751 : startOffset(start),
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756 Range(size_t start, size_t end, std::string content)
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757 : startOffset(start),
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765 * @brief Structure containing all values needed to invoke Accessible::DoGesture
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766 * type : numerated gesture type
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767 * xBeg, yBeg : point where gesture begins
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768 * xEnd, yEnd : point where gesture ends
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769 * state : enumerated state of gesture
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770 * eventTime : time when event occured
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771 * @see Dali::Accessibility::Accessible::DoGesture
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775 GestureInfo() = default;
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776 GestureInfo(Gesture type, int32_t xBeg, int32_t xEnd, int32_t yBeg, int32_t yEnd, GestureState state, uint32_t eventTime)
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783 eventTime(eventTime)
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792 GestureState state{};
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793 uint32_t eventTime{};
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797 * @brief Class representing accessibility relations
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798 * Class connecting one source object with multiple target objects with usage
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799 * of specific relation type.
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800 * @note std::string representing source and targets are string values of Accessibility::Address
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801 * @see Dali::Accessibility::Accessible::Address
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802 * @see Dali::Accessibility::Accessible::RelationType
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806 Relation(RelationType relationType, std::vector<Address> targets)
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807 : relationType(relationType),
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812 RelationType relationType;
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813 std::vector<Address> targets;
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816 } // namespace Accessibility
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817 } // namespace Dali
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819 #endif // DALI_ATSPI_ACCESSIBILITY_H
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