1 #ifndef __DALI_TOOLKIT_PAGE_TURN_VIEW_H__
2 #define __DALI_TOOLKIT_PAGE_TURN_VIEW_H__
5 // Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 // Licensed under the Flora License, Version 1.0 (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://floralicense.org/license/
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.
21 #include <dali-toolkit/public-api/controls/control.h>
23 namespace Dali DALI_IMPORT_API
29 // Forward declarations
32 namespace Internal DALI_INTERNAL
38 * PageTurnView is a base class of different mode of pageTurnViews ( portrait or landscape )
39 * Page actors are provided from an external PageFactory
40 * PanGesture is used to activate the page bending, streching and tuning forward/backward
42 * Signal usage: There are four signals. Two matching pairs for panning and page turning:
43 * PagePanStarted/PagePanFinished and PageTurnStarted/PageTurnFinished. Panning relates to user interaction with
44 * the screen while page turning refers to animation of the page. There are three scenarios for these
45 * events: normal page turn (forwards or backwards), aborted page turn (forwards or backwards)
46 * and pan with no animation. The order of events is as follows:
47 * 1) Normal page turn: PagePanStarted -> PageTurnStarted direction -> PagePanFinished -> PageTurnFinished direction
48 * 2) Aborted page turn: PagePanStarted -> PageTurnStarted direction -> PageTurnStarted opposite direction
49 * -> PagePanFinished -> PageTurnFinished opposite direction
50 * 3) Pan with no animation: PagePanStarted -> PagePanFinished
51 * Pan with no animation will occur when the user touches the page in an area that does not start the
54 class PageTurnView : public Control
59 * Creates an empty PageTurnView handle. Only derived versions can be instantiated.
60 * Calling member function with an uninitialized handle is not allowed.
65 * Copy constructor. Creates another handle that points to the same real object
66 * @param[in] handle Handle to copy from
68 PageTurnView( const PageTurnView& handle );
71 * Assignment operator. Changes this handle to point to another real object
73 PageTurnView& operator=( const PageTurnView& handle );
78 virtual ~PageTurnView();
81 * Downcast an Object handle to PageTurnView.
82 * If handle points to an PageTurnView the downcast produces valid handle.
83 * If not the returned handle is left uninitialized.
84 * @param[in] handle Handle to an object
85 * @return handle to a PageTurnView or an uninitialized handle
87 static PageTurnView DownCast( BaseHandle handle );
90 * Set the spine shadow parameter to the shader effects
91 * The two parameters are the major&minor radius (in pixels) to form an ellipse shape
92 * The top-left quarter of this ellipse is used to calculate spine normal for simulating shadow
93 * @param [in] spineShadowParameter The major&minor ellipse radius for the simulated spine shadow
95 void SetSpineShadowParameter( const Vector2& spineShadowParameter );
98 * Retrieve the spine shadow parameter of the shader effects
99 * @return The major&minor ellipse radius for the simulated spine shadow
101 Vector2 GetSpineShadowParameter();
104 * Go to a specific page
105 * @param[in] pageId The new current page index
107 void GoToPage( unsigned int pageId );
110 * Retrieve the index of the current Page
111 * @return The index of the current page
113 unsigned int GetCurrentPage();
117 * Case 1, the page factory passes image actor into the view as page content, do nothing.
118 * Case 2, the page factory passes an actor tree into the view as page content,
119 * the actor tree will receive the touch event in edit mode, and set the refresh rate of the off screen render task to always
120 * @return an empty actor in case 1; the actor tree root of the current page
122 Actor EnterEditMode();
126 * Case 1, the page factory passes image actor into the view as page content, do nothing.
127 * Case 2, the page factory passes an actor tree into the view as page content,
128 * the page actor will receive all the touch event, and set the refresh rage of the off screen render task to once.
130 void LeaveEditMode();
133 * Return the actor get hit in the actor tree of the current page by given the touch position on the PageTurnView
134 * @param[in] screenCoordinates The hit position of the PageTurnView
135 * @param[out] actorCoordinates The local hit position of the hitted actor
136 * @return the hitted actor
138 Actor GetHitActor( Vector2& screenCoordinates, Vector2& actorCoordinates );
141 * Refresh all the cached pages by calling the render task to refresh.
146 * Refresh current page by calling the render task to refresh
148 void RefreshCurrentPage();
152 // Page Turned signal, with page index and boolean turning direction (true = forward, false = backward)
153 typedef SignalV2< void ( PageTurnView, unsigned int, bool ) > PageTurnSignal;
154 typedef SignalV2< void ( PageTurnView ) > PagePanSignal;
157 * Signal emitted when a page has started to turn over.
158 * A callback of the following type may be connected:
160 * void YourCallBackName( PageTurnView pageTurnView, unsigned int pageIndex, bool isTurningForward );
162 * @return The signal to connect to
164 PageTurnSignal& PageTurnStartedSignal();
167 * Signal emitted when a page has finished turning over.
168 * A callback of the following type may be connected:
170 * void YourCallBackName( PageTurnView pageTurnView, unsigned int pageIndex, bool isTurningForward );
172 * @return The signal to connect to
174 PageTurnSignal& PageTurnFinishedSignal();
177 * Signal emitted when a page pan has commenced
178 * A callback of the following type may be connected:
180 * void YourCallBackName( PageTurnView pageTurnView );
182 * @return The signal to connect to
184 PagePanSignal& PagePanStartedSignal();
187 * Signal emitted when a page pan has finished
188 * A callback of the following type may be connected:
190 * void YourCallBackName( PageTurnView pageTurnView );
192 * @return The signal to connect to
194 PagePanSignal& PagePanFinishedSignal();
196 public: // Not intended for application developers
199 * Creates a handle using the Toolkit::Internal implementation.
200 * @param[in] implementation The Control implementation.
202 DALI_INTERNAL PageTurnView(Internal::PageTurnView& implementation);
205 * Allows the creation of this Control from an Internal::CustomActor pointer.
206 * @param[in] internal A pointer to the internal CustomActor.
208 DALI_INTERNAL PageTurnView(Dali::Internal::CustomActor* internal);
211 } // namespace Toolkit
215 #endif /* __DALI_TOOLKIT_PAGE_TURN_VIEW_H__ */