#define DALI_PAN_GESTURE_H
/*
- * Copyright (c) 2019 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2020 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.
namespace Dali
{
+namespace Internal DALI_INTERNAL
+{
+class PanGesture;
+}
+
/**
* @addtogroup dali_core_events
* @{
/**
* @brief A PanGesture is emitted when the user moves one or more fingers in a particular direction.
*
- * This gesture can be in one of three states, when the pan gesture is first detected: Gesture::Started
- * when the pan gesture is continuing: Gesture::Continuing and finally, when the pan gesture ends:
- * Gesture::Finished.
+ * This gesture can be in one of three states, when the pan gesture is first detected: GestureState::STARTED
+ * when the pan gesture is continuing: GestureState::CONTINUING and finally, when the pan gesture ends:
+ * GestureState::FINISHED.
*
* A pan gesture will end in the following ways:
* - User releases the primary finger (the first touch).
* - Cancelled by the system.
*
* A pan gesture will continue to be sent to the actor under than initial pan until it ends.
- * @SINCE_1_0.0
+ * @SINCE_1_9.28
*/
-struct DALI_CORE_API PanGesture: public Gesture
+class DALI_CORE_API PanGesture : public Gesture
{
- // Construction & Destruction
-
+public:
/**
- * @brief Default Constructor.
- * @SINCE_1_0.0
+ * @brief Creates an uninitialized PanGesture handle.
+ *
+ * Calling member functions with an uninitialized Actor handle is not allowed.
+ * @SINCE_1_9.28
*/
PanGesture();
/**
- * @brief Constructor.
- *
- * @SINCE_1_0.0
- * @param[in] state The state of the gesture
+ * @brief Copy constructor.
+ * @SINCE_1_9.28
+ * @param[in] rhs A reference to the copied handle
*/
- PanGesture(Gesture::State state);
+ PanGesture(const PanGesture& rhs);
/**
- * @brief Copy constructor.
- * @SINCE_1_0.0
- * @param[in] rhs A reference to the copied handle
+ * @brief Move constructor.
+ * @SINCE_1_9.28
+ * @param[in] rhs A reference to the moved handle
*/
- PanGesture( const PanGesture& rhs );
+ PanGesture(PanGesture&& rhs) noexcept;
/**
* @brief Assignment operator.
- * @SINCE_1_0.0
+ * @SINCE_1_9.28
* @param[in] rhs A reference to the copied handle
* @return A reference to this
*/
- PanGesture& operator=( const PanGesture& rhs );
+ PanGesture& operator=(const PanGesture& rhs);
/**
- * @brief Virtual destructor.
- * @SINCE_1_0.0
+ * @brief Move assignment operator.
+ * @SINCE_1_9.28
+ * @param[in] rhs A reference to the moved handle
+ * @return A reference to this
*/
- virtual ~PanGesture();
+ PanGesture& operator=(PanGesture&& rhs) noexcept;
- // Data
+ /**
+ * @brief Non virtual destructor.
+ * @SINCE_1_9.28
+ */
+ ~PanGesture();
/**
* @brief The velocity at which the user is moving their fingers.
* A positive x value shows that the user is panning to the right, a negative x value means the opposite.
* A positive y value shows that the user is panning downwards, a negative y values means upwards.
* This value represents the local coordinates of the actor attached to the PanGestureDetector.
+ * @SINCE_1_9.28
+ * @return The velocity of the pan
*/
- Vector2 velocity;
+ const Vector2& GetVelocity() const;
/**
* @brief This is a Vector2 showing how much the user has panned (dragged) since the last pan gesture or,
* A positive y value shows that the user is panning downwards, a negative y value means upwards.
* This value is in local actor coordinates, the actor being the one attached to the
* PanGestureDetector.
+ * @SINCE_1_9.28
+ * @return The displacement of the pan
*/
- Vector2 displacement;
+ const Vector2& GetDisplacement() const;
/**
* @brief This current touch position of the primary touch point in local actor coordinates.
+ * @SINCE_1_9.28
+ * @return The current position of the pan (in local actor coordinates)
*/
- Vector2 position;
+ const Vector2& GetPosition() const;
/**
* @brief The velocity at which the user is moving their fingers.
* A positive x value shows that the user is panning to the right, a negative x value means the opposite.
* A positive y value shows that the user is panning downwards, a negative y values means upwards.
* This value represents the screen coordinates.
+ * @SINCE_1_9.28
+ * @return The velocity of the pan (in screen coordinates)
*/
- Vector2 screenVelocity;
+ const Vector2& GetScreenVelocity() const;
/**
* @brief This is a Vector2 showing how much the user has panned (dragged) since the last pan gesture or,
* A positive x value shows that the user is panning to the right, a negative x value means the opposite.
* A positive y value shows that the user is panning downwards, a negative y value means upwards.
* This value is in screen coordinates.
+ * @SINCE_1_9.28
+ * @return The displacement of the pan (in screen coordinates)
*/
- Vector2 screenDisplacement;
+ const Vector2& GetScreenDisplacement() const;
/**
* @brief This current touch position of the primary touch point in screen coordinates.
+ * @SINCE_1_9.28
+ * @return The current position of the pan (in screen coordinates)
*/
- Vector2 screenPosition;
+ const Vector2& GetScreenPosition() const;
/**
* @brief The total number of fingers touching the screen in a pan gesture.
+ * @SINCE_1_9.28
+ * @return The number of touches in the pan
*/
- uint32_t numberOfTouches;
+ uint32_t GetNumberOfTouches() const;
// Convenience Methods
* @brief Returns the speed at which the user is moving their fingers.
*
* This is the pixel movement per millisecond.
- * @SINCE_1_0.0
+ * @SINCE_1_9.28
* @return The speed of the pan (in pixels per millisecond)
*/
float GetSpeed() const;
* if the gesture has just started, then the distance moved since the user touched the screen.
*
* This is always a positive value.
- * @SINCE_1_0.0
+ * @SINCE_1_9.28
* @return The distance, as a float, a user's finger has panned
*/
float GetDistance() const;
* @brief Returns the speed at which the user is moving their fingers relative to screen coordinates.
*
* This is the pixel movement per millisecond.
- * @SINCE_1_0.0
+ * @SINCE_1_9.28
* @return The speed of the pan (in pixels per millisecond)
*/
float GetScreenSpeed() const;
* since the user touched the screen.
*
* This is always a positive value.
- * @SINCE_1_0.0
+ * @SINCE_1_9.28
* @return The distance, as a float, a user's finger has panned
*/
float GetScreenDistance() const;
+
+public: // Not intended for application developers
+ /// @cond internal
+ /**
+ * @brief This constructor is used internally to Create an initialized PanGesture handle.
+ *
+ * @param[in] panGesture A pointer to a newly allocated Dali resource
+ * @SINCE_1_9.28
+ */
+ explicit DALI_INTERNAL PanGesture(Internal::PanGesture* panGesture);
+ /// @endcond
};
/**
projects / platform / core / uifw / dali-core.git / blobdiff