1 #ifndef __DALI_TOOLKIT_BUTTON_H__
2 #define __DALI_TOOLKIT_BUTTON_H__
5 * Copyright (c) 2015 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-toolkit/public-api/controls/control.h>
30 namespace Internal DALI_INTERNAL
35 * @addtogroup dali_toolkit_controls_buttons
40 * @brief Button is a base class for different kind of buttons.
42 * This class provides the disabled property and the clicked signal.
44 * A ClickedSignal() is emitted when the button is touched and the touch point doesn't leave the boundary of the button.
46 * When the \e disabled property is set to \e true, no signal is emitted.
48 * Button provides the following properties which modify the signals emitted:
50 * <li>\e autorepeating
51 * When \e autorepeating is set to \e true, a Button::PressedSignal(), Button::ReleasedSignal() and Button::ClickedSignal() signals are emitted at regular
52 * intervals while the button is touched.
53 * The intervals could be modified with the Button::SetInitialAutoRepeatingDelay and Button::SetNextAutoRepeatingDelay methods.
55 * A \e togglable button can't be \e autorepeating. If the \e autorepeating property is set to \e true, then the \e togglable property is set to
56 * false but no signal is emitted.
59 * When \e togglable is set to \e true, a Button::StateChangedSignal() signal is emitted, with the selected state.
62 * The button's appearance can be modified by setting properties for the various image filenames.
64 * The \e background is always shown and doesn't change if the button is pressed or released. The \e button image is shown over the \e background image when the
65 * button is not pressed and is replaced by the \e selected image when the button is pressed. The text label is placed always on the top of all images.
67 * When the button is disabled, \e background, \e button and \e selected images are replaced by their \e disabled images.
69 * Is not mandatory set all images. A button could be defined only by setting its \e background image or by setting its \e background and \e selected images.
72 * | %Signal Name | Method |
73 * |------------------|-----------------------------|
74 * | pressed | @ref PressedSignal() |
75 * | released | @ref ReleasedSignal() |
76 * | clicked | @ref ClickedSignal() |
77 * | stateChanged | @ref StateChangedSignal() |
80 * | %Action Name | %Button method called |
81 * |------------------|-----------------------------|
82 * | buttonClick | %DoClickAction() |
85 class DALI_IMPORT_API Button : public Control
90 * @brief The start and end property ranges for this control.
95 PROPERTY_START_INDEX = Control::CONTROL_PROPERTY_END_INDEX + 1, ///< @SINCE_1_0.0
96 PROPERTY_END_INDEX = PROPERTY_START_INDEX + 1000 ///< Reserve property indices @SINCE_1_0.0
100 * @brief An enumeration of properties belonging to the Button class.
107 DISABLED = PROPERTY_START_INDEX, ///< name "disabled", @see SetDisabled(), type bool @SINCE_1_0.0
108 AUTO_REPEATING, ///< name "autoRepeating", @see SetAutoRepeating(), type bool @SINCE_1_0.0
109 INITIAL_AUTO_REPEATING_DELAY, ///< name "initialAutoRepeatingDelay", @see SetInitialAutoRepeatingDelay(), type float @SINCE_1_0.0
110 NEXT_AUTO_REPEATING_DELAY, ///< name "nextAutoRepeatingDelay", @see SetNextAutoRepeatingDelay(), type float @SINCE_1_0.0
111 TOGGLABLE, ///< name "togglable", @see SetTogglableButton(), type bool @SINCE_1_0.0
112 SELECTED, ///< name "selected", @see SetSelected(), type bool @SINCE_1_0.0
113 UNSELECTED_STATE_IMAGE, ///< name "unselectedStateImage", @see SetUnselectedImage(), type std::string @SINCE_1_0.0
114 SELECTED_STATE_IMAGE, ///< name "selectedStateImage", @see SetSelectedImage(), type std::string @SINCE_1_0.0
115 DISABLED_STATE_IMAGE, ///< name "disabledStateImage", @see SetDisabledImage(), type std::string @SINCE_1_0.0
116 UNSELECTED_COLOR, ///< name "unselectedColor", type Vector4 @SINCE_1_0.0
117 SELECTED_COLOR, ///< name "selectedColor", type Vector4 @SINCE_1_0.0
118 LABEL, ///< name "label", type Property::Map @SINCE_1_0.0
120 // Deprecated properties:
121 LABEL_TEXT, ///< name "labelText", @see SetLabelText(), type std::string @SINCE_1_0.0
128 * @brief Create an uninitialized Button.
130 * Only derived versions can be instantiated. Calling member
131 * functions with an uninitialized Dali::Object is not allowed.
137 * @brief Copy constructor.
140 Button( const Button& button );
143 * @brief Assignment operator.
146 Button& operator=( const Button& button );
149 * @brief Downcast a handle to Button handle.
151 * If handle points to a Button the downcast produces valid
152 * handle. If not the returned handle is left uninitialized.
155 * @param[in] handle Handle to an object
156 * @return A handle to a Button or an uninitialized handle
158 static Button DownCast( BaseHandle handle );
163 * This is non-virtual since derived Handle types must not contain data or virtual methods.
169 * @brief Sets the button as \e disabled.
171 * No signals are emitted when the \e disabled property is set.
174 * @param[in] disabled property.
176 void SetDisabled( bool disabled );
179 * @brief Returns if the button is disabled.
181 * @return \e true if the button is \e disabled.
183 bool IsDisabled() const;
186 * @brief Sets the \e autorepeating property.
188 * If the \e autorepeating property is set to \e true, then the \e togglable property is set to false
189 * but no signal is emitted.
192 * @param[in] autoRepeating \e autorepeating property.
194 void SetAutoRepeating( bool autoRepeating );
197 * @brief Returns if the autorepeating property is set.
199 * @return \e true if the \e autorepeating property is set.
201 bool IsAutoRepeating() const;
204 * @brief Sets the initial autorepeating delay.
206 * By default this value is set to 0.15 seconds.
209 * @param[in] initialAutoRepeatingDelay in seconds.
210 * @pre initialAutoRepeatingDelay must be greater than zero.
212 void SetInitialAutoRepeatingDelay( float initialAutoRepeatingDelay );
215 * @brief Gets the initial autorepeating delay in seconds.
217 * @return the initial autorepeating delay in seconds.
219 float GetInitialAutoRepeatingDelay() const;
222 * @brief Sets the next autorepeating delay.
224 * By default this value is set to 0.05 seconds.
227 * @param[in] nextAutoRepeatingDelay in seconds.
228 * @pre nextAutoRepeatingDelay must be greater than zero.
230 void SetNextAutoRepeatingDelay( float nextAutoRepeatingDelay );
233 * @brief Gets the next autorepeating delay in seconds.
235 * @return the next autorepeating delay in seconds.
237 float GetNextAutoRepeatingDelay() const;
240 * @brief Sets the \e togglable property.
242 * If the \e togglable property is set to \e true, then the \e autorepeating property is set to false.
245 * @param[in] togglable property.
247 void SetTogglableButton( bool togglable );
250 * @brief Returns if the togglable property is set.
252 * @return \e true if the \e togglable property is set.
254 bool IsTogglableButton() const;
257 * @brief Sets the button as selected or unselected.
259 * \e togglable property must be set to \e true.
261 * Emits a Button::StateChangedSignal() signal.
264 * @param[in] selected property.
266 void SetSelected( bool selected );
269 * @brief Returns if the selected property is set and the button is togglable.
271 * @return \e true if the button is \e selected.
273 bool IsSelected() const;
276 * @brief Sets the animation time.
279 * @param[in] animationTime The animation time in seconds.
281 void SetAnimationTime( float animationTime );
284 * @brief Retrieves button's animation time.
287 * @return The animation time in seconds.
289 float GetAnimationTime() const;
292 * @brief Sets the button's label.
295 * @param[in] label The label text.
297 void SetLabelText( const std::string& label );
300 * @brief Gets the label.
303 * @return The label text.
305 std::string GetLabelText() const;
308 * @brief Sets the unselected button image.
311 * @param[in] filename The button image.
313 void SetUnselectedImage( const std::string& filename );
316 * @brief Sets the background image.
319 * @param[in] filename The background image.
321 void SetBackgroundImage( const std::string& filename );
324 * @brief Sets the selected image.
327 * @param[in] filename The selected image.
329 void SetSelectedImage( const std::string& filename );
332 * @brief Sets the selected background image.
335 * @param[in] filename The selected background image.
337 void SetSelectedBackgroundImage( const std::string& filename );
340 * @brief Sets the disabled background image.
343 * @param[in] filename The disabled background image.
345 void SetDisabledBackgroundImage( const std::string& filename );
348 * @brief Sets the disabled button image.
351 * @param[in] filename The disabled button image.
353 void SetDisabledImage( const std::string& filename );
356 * @brief Sets the disabled selected button image.
359 * @param[in] filename The disabled selected button image.
361 void SetDisabledSelectedImage( const std::string& filename );
366 * @DEPRECATED_1_0.50. Instead, use SetLabelText.
368 * @brief Sets the label with an actor.
371 * @param[in] label The actor to use as a label
373 void SetLabel( Actor label );
376 * @DEPRECATED_1_0.50. Instead, use SetUnselectedImage.
378 * @brief Sets the button image.
381 * @param[in] image The button image.
383 void SetButtonImage( Image image );
386 * @DEPRECATED_1_0.50. Instead, use SetSelectedImage( const std::string& filename ).
388 * @brief Sets the selected image.
391 * @param[in] image The selected image.
393 void SetSelectedImage( Image image );
398 * @brief Gets the button image.
401 * @remarks Avoid using this method as it's a legacy code.
402 * @return An actor with the button image.
404 Actor GetButtonImage() const;
409 * @brief Gets the selected image.
412 * @remarks Avoid using this method as it's a legacy code.
413 * @return An actor with the selected image.
415 Actor GetSelectedImage() const;
420 * @brief Button signal type
423 typedef Signal< bool ( Button ) > ButtonSignalType;
426 * @brief This signal is emitted when the button is touched.
428 * A callback of the following type may be connected:
430 * bool YourCallbackName( Button button );
433 * @return The signal to connect to.
435 ButtonSignalType& PressedSignal();
438 * @brief This signal is emitted when the button is touched and the touch point leaves the boundary of the button.
440 * A callback of the following type may be connected:
442 * bool YourCallbackName( Button button );
445 * @return The signal to connect to.
447 ButtonSignalType& ReleasedSignal();
450 * @brief This signal is emitted when the button is touched and the touch point doesn't leave the boundary of the button.
452 * A callback of the following type may be connected:
454 * bool YourCallbackName( Button button );
457 * @return The signal to connect to.
459 ButtonSignalType& ClickedSignal();
462 * @brief This signal is emitted when the button's state is changed.
464 * The application can get the state by calling IsSelected().
466 * A callback of the following type may be connected:
468 * bool YourCallbackName( Button button );
471 * @return The signal to connect to.
473 ButtonSignalType& StateChangedSignal();
475 public: // Not intended for application developers
478 * @brief Creates a handle using the Toolkit::Internal implementation.
481 * @param[in] implementation The Control implementation.
483 DALI_INTERNAL Button( Internal::Button& implementation );
486 * @brief Allows the creation of this Control from an Internal::CustomActor pointer.
489 * @param[in] internal A pointer to the internal CustomActor.
491 DALI_INTERNAL Button( Dali::Internal::CustomActor* internal );
497 } // namespace Toolkit
501 #endif // __DALI_TOOLKIT_BUTTON_H__