1 #ifndef __DALI_VIRTUAL_KEYBOARD_H__
2 #define __DALI_VIRTUAL_KEYBOARD_H__
5 * Copyright (c) 2018 Samsung Electronics Co., Ltd.
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
22 #include <dali/public-api/signals/dali-signal.h>
23 #include <dali/public-api/object/property-map.h>
24 #include <dali/public-api/math/rect.h>
27 #include <dali/public-api/adaptor-framework/input-method.h>
33 * @brief This namespace is provided for application developers to be able to show and hide the on-screen keyboard.
35 * Key events are sent to the actor in focus. Focus is set through the actor Public API.
37 namespace VirtualKeyboard
42 typedef Signal< void () > VoidSignalType;
43 typedef Signal< void ( bool ) > StatusSignalType;
44 typedef Signal< void ( int ) > KeyboardResizedSignalType;
45 typedef Signal< void ( int ) > LanguageChangedSignalType;
50 * @brief The direction of text.
59 * @brief The meaning of the return key.
76 * @brief Show the virtual keyboard.
78 DALI_IMPORT_API void Show();
81 * @brief Hide the virtual keyboard.
83 DALI_IMPORT_API void Hide();
86 * @brief Returns whether the virtual keyboard is visible or not.
87 * @return true if visible, false otherwise.
89 DALI_IMPORT_API bool IsVisible();
92 * @brief Set one or more of the Input Method Settings
93 * @param[in] settingsMap Map of Settings to be applied.
95 DALI_IMPORT_API void ApplySettings( const Property::Map& settingsMap );
98 * @brief Set the specific return key into the virtual keyboard.
99 * @param[in] type the kind of return key types.
101 DALI_IMPORT_API void SetReturnKeyType( const InputMethod::ButtonAction::Type type );
104 * @brief Retrieve the current return key type.
105 * @return the type of retun key.
107 DALI_IMPORT_API InputMethod::ButtonAction::Type GetReturnKeyType();
110 * @brief Enable/disable prediction (predictive text).
112 * By default prediction text is enabled.
113 * @param[in] enable true or false to enable or disable
114 * Prediction can not be changed while the keyboard is visible. It must be set in advance of showing keyboard.
116 DALI_IMPORT_API void EnablePrediction(const bool enable);
119 * @brief Returns whether prediction is enabled in the virtual keyboard
120 * @return true if predictive text enabled, false otherwise.
122 DALI_IMPORT_API bool IsPredictionEnabled();
125 * @brief Provides size and position of keyboard.
127 * Position is relative to whether keyboard is visible or not.
128 * If keyboard is not visible then position will be off the screen.
129 * If keyboard is not being shown when this method is called the keyboard is partially setup (IMFContext) to get
130 * the values then taken down. So ideally GetSizeAndPosition() should be called after Show().
131 * @return rect which is keyboard panel x, y, width, height
133 DALI_IMPORT_API Dali::Rect<int> GetSizeAndPosition();
136 * @brief Rotates the keyboard orientation to the given angle.
138 * A value of 0 indicates the portrait orientation.
139 * Other valid values are 90, 180, 270.
140 * @param angle the angle is in degrees.
142 DALI_IMPORT_API void RotateTo(int angle);
145 * @brief Returns text direction of the keyboard's current input language.
146 * @return The direction of the text.
148 DALI_IMPORT_API TextDirection GetTextDirection();
151 * @brief Connect to this signal to be notified when the virtual keyboard is shown or hidden.
153 * A callback of the following type may be connected:
155 * void YourCallbackName(bool keyboardShown);
157 * If the parameter keyboardShown is true, then the keyboard has just shown, if it is false, then it
158 * has just been hidden.
159 * @return The signal to connect to.
161 DALI_IMPORT_API StatusSignalType& StatusChangedSignal();
164 * @brief Connect to this signal to be notified when the virtual keyboard is resized.
166 * A callback of the following type may be connected:
168 * void YourCallbackName( int resolvedResize );
170 * The parameter sends the resolved resize defined by the IMF.
172 * User can get changed size by using GetSizeAndPosition() in the callback
173 * @return The signal to connect to.
175 DALI_IMPORT_API KeyboardResizedSignalType& ResizedSignal();
178 * @brief Connect to this signal to be notified when the virtual keyboard's language is changed.
180 * A callback of the following type may be connected:
182 * void YourCallbackName( int resolvedLanguage );
184 * The parameter sends the resolved language defined by the IMF.
186 * User can get the text direction of the language by calling GetTextDirection() in the callback.
187 * @return The signal to connect to.
189 DALI_IMPORT_API LanguageChangedSignalType& LanguageChangedSignal();
191 } // namespace VirtualKeyboard
195 #endif // __DALI_VIRTUAL_KEYBOARD_H__