-#ifndef __DALI_TAP_GESTURE_DETECTOR_H__
-#define __DALI_TAP_GESTURE_DETECTOR_H__
+#ifndef DALI_TAP_GESTURE_DETECTOR_H
+#define DALI_TAP_GESTURE_DETECTOR_H
/*
- * Copyright (c) 2014 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2021 Samsung Electronics Co., Ltd.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
*/
+// EXTERNAL INCLUDES
+#include <cstdint> // uint32_t
+
// INTERNAL INCLUDES
#include <dali/public-api/events/gesture-detector.h>
-#include <dali/public-api/signals/dali-signal-v2.h>
+#include <dali/public-api/signals/dali-signal.h>
namespace Dali
{
+/**
+ * @addtogroup dali_core_events
+ * @{
+ */
namespace Internal DALI_INTERNAL
{
class TapGestureDetector;
}
-struct TapGesture;
+class TapGesture;
/**
* @brief This class emits a signal when a tap gesture occurs that meets the requirements set by the
* application.
*
- * See TapGestureDetector::SetTapsRequired and TapGestureDetector::SetTouchesRequired.
+ * See @ref TapGestureDetector::SetMinimumTapsRequired
+ * See @ref TapGestureDetector::SetMaximumTapsRequired
*
- * A Tap Gesture is a discrete gesture, which means it does not have any state information attached
+ * A TapGesture is a discrete gesture, which means it does not have any state information attached
* to it. Please see TapGesture for more information.
*
* The application programmer can use this gesture detector as follows:
* detector.DetectedSignal().Connect(this, &MyApplication::OnTap);
* @endcode
*
+ * @SINCE_1_0.0
+ * @note Multi-touch taps (two or more points of contact with the surface) are not currently
+ * supported. However, multiple taps (double & triple tap etc.) are supported.
+ *
+ * Signals
+ * | %Signal Name | Method |
+ * |--------------|-----------------------|
+ * | tapDetected | @ref DetectedSignal() |
* @see TapGesture
+ *
*/
-class DALI_IMPORT_API TapGestureDetector : public GestureDetector
+class DALI_CORE_API TapGestureDetector : public GestureDetector
{
public: // Typedefs
-
/**
* @brief Signal type for detected signal.
+ * @SINCE_1_0.0
*/
- typedef SignalV2< void (Actor, TapGesture) > DetectedSignalV2;
-
- //Signal Names
- static const char* const SIGNAL_TAP_DETECTED; ///< name "tap-detected"
+ using DetectedSignalType = Signal<void(Actor, const TapGesture&)>;
public: // Creation & Destruction
-
/**
- * @brief Create an uninitialized TapGestureDetector; this can be initialized with TapGestureDetector::New().
+ * @brief Creates an uninitialized TapGestureDetector; this can be initialized with TapGestureDetector::New().
*
- * Calling member functions with an uninitialized Dali::Object is not allowed.
+ * Calling member functions with an uninitialized TapGestureDetector handle is not allowed.
+ * @SINCE_1_0.0
*/
TapGestureDetector();
/**
- * @brief Create an initialized TapGestureDetector.
+ * @brief Creates an initialized TapGestureDetector.
*
* By default, this would create a gesture detector which requires one tap with one touch.
- * @return A handle to a newly allocated Dali resource.
+ * @SINCE_1_0.0
+ * @return A handle to a newly allocated Dali resource
*/
static TapGestureDetector New();
/**
- * @brief Create an initialized TapGestureDetector with the specified parameters.
+ * @brief Creates an initialized TapGestureDetector with the specified parameters.
*
- * @param[in] tapsRequired The number of taps required.
- * @param[in] touchesRequired The number of touches required.
- * @return A handle to a newly allocated Dali resource.
+ * @SINCE_1_0.0
+ * @param[in] tapsRequired The minimum & maximum number of taps required
+ * @return A handle to a newly allocated Dali resource
*/
- static TapGestureDetector New(unsigned int tapsRequired, unsigned int touchesRequired);
+ static TapGestureDetector New(uint32_t tapsRequired);
/**
- * @brief Downcast an Object handle to TapGestureDetector handle.
+ * @brief Downcasts a handle to TapGestureDetector handle.
*
- * If handle points to a TapGestureDetector object the
- * downcast produces valid handle. If not the returned handle is left uninitialized.
- * @param[in] handle to An object
- * @return handle to a TapGestureDetector object or an uninitialized handle
+ * If handle points to a TapGestureDetector object, the
+ * downcast produces valid handle. If not, the returned handle is left uninitialized.
+ * @SINCE_1_0.0
+ * @param[in] handle Handle to an object
+ * @return Handle to a TapGestureDetector object or an uninitialized handle
*/
- static TapGestureDetector DownCast( BaseHandle handle );
+ static TapGestureDetector DownCast(BaseHandle handle);
/**
- * @brief Destructor
+ * @brief Destructor.
*
* This is non-virtual since derived Handle types must not contain data or virtual methods.
+ * @SINCE_1_0.0
*/
~TapGestureDetector();
/**
* @brief This copy constructor is required for (smart) pointer semantics.
*
- * @param [in] handle A reference to the copied handle
+ * @SINCE_1_0.0
+ * @param[in] handle A reference to the copied handle
*/
TapGestureDetector(const TapGestureDetector& handle);
/**
* @brief This assignment operator is required for (smart) pointer semantics.
*
- * @param [in] rhs A reference to the copied handle
+ * @SINCE_1_0.0
+ * @param[in] rhs A reference to the copied handle
* @return A reference to this
*/
TapGestureDetector& operator=(const TapGestureDetector& rhs);
public: // Setters
+ /**
+ * @brief Sets the minimum number of taps required.
+ *
+ * The tap count is the number of times a user should "tap" the screen.
+ * @SINCE_1_0.0
+ * @param[in] minimumTaps The minimum taps required
+ * @pre The gesture detector has been initialized.
+ * @note The default is '1', the maximum is 2.
+ * @see ReceiveAllTapEvents
+ */
+ void SetMinimumTapsRequired(uint32_t minimumTaps);
/**
- * @brief Set the number of taps required.
+ * @brief Sets the maximum number of taps required.
*
* The tap count is the number of times a user should "tap" the screen.
- * @param[in] taps Taps required.
+ * @SINCE_1_0.0
+ * @param[in] maximumTaps The maximum taps required
* @pre The gesture detector has been initialized.
- * @note The default is '1'.
+ * @note The default is '1', the maximum is 2.
+ * @see ReceiveAllTapEvents
*/
- void SetTapsRequired(unsigned int taps);
+ void SetMaximumTapsRequired(uint32_t maximumTaps);
/**
- * @brief Set the number of touches required.
+ * @brief When set to true, all tap gestures will be received when multiple taps are supported by the gesture detector.
*
- * The number of touches corresponds to the number of fingers a user has on the screen.
- * @param[in] touches Touches required.
+ * @param[in] receive The receiving all tap events flag
* @pre The gesture detector has been initialized.
- * @note The default is '1'.
+ * @note The default is false.
*/
- void SetTouchesRequired(unsigned int touches);
+ void ReceiveAllTapEvents(bool receive);
public: // Getters
-
/**
- * @brief Retrieves the number of taps required.
+ * @brief Retrieves the minimum number of taps required.
*
- * @return The taps required.
+ * @SINCE_1_0.0
+ * @return The minimum taps required
* @pre The gesture detector has been initialized.
*/
- unsigned int GetTapsRequired() const;
+ uint32_t GetMinimumTapsRequired() const;
/**
- * @brief Retrieves the number of touches required.
+ * @brief Retrieves the maximum number of taps required.
*
- * @return The number of touches required.
+ * @SINCE_1_0.0
+ * @return The maximum taps required
* @pre The gesture detector has been initialized.
*/
- unsigned int GetTouchesRequired() const;
+ uint32_t GetMaximumTapsRequired() const;
public: // Signals
-
/**
* @brief This signal is emitted when the specified tap is detected on the attached actor.
*
* A callback of the following type may be connected:
* @code
- * void YourCallbackName(Actor actor, TapGesture gesture);
+ * void YourCallbackName( Actor actor, const TapGesture& gesture );
* @endcode
+ * @SINCE_1_0.0
+ * @return The signal to connect to
* @pre The gesture detector has been initialized.
- * @return The signal to connect to.
*/
- DetectedSignalV2& DetectedSignal();
+ DetectedSignalType& DetectedSignal();
public: // Not intended for Application developers
-
+ /// @cond internal
/**
- * @brief This constructor is used by Dali New() methods.
+ * @brief This constructor is used by TapGestureDetector::New() methods.
*
- * @param [in] internal A pointer to a newly allocated Dali resource.
+ * @SINCE_1_0.0
+ * @param[in] internal A pointer to a newly allocated Dali resource
*/
explicit DALI_INTERNAL TapGestureDetector(Internal::TapGestureDetector* internal);
+ /// @endcond
};
+/**
+ * @}
+ */
+
} // namespace Dali
-#endif // __DALI_TAP_GESTURE_DETECTOR_H__
+#endif // DALI_TAP_GESTURE_DETECTOR_H
projects / platform / core / uifw / dali-core.git / blobdiff