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 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 <boost/function.hpp>
25 #include <dali-toolkit/public-api/controls/control.h>
27 namespace Dali DALI_IMPORT_API
33 // Forward declarations
36 namespace Internal DALI_INTERNAL
42 * PageTurnView is a base class of different mode of pageTurnViews ( portrait or landscape )
43 * Page actors are provided from an external PageFactory
44 * PanGesture is used to activate the page bending, streching and tuning forward/backward
46 * Signal usage: There are four signals. Two matching pairs for panning and page turning:
47 * PagePanStarted/PagePanFinished and PageTurnStarted/PageTurnFinished. Panning relates to user interaction with
48 * the screen while page turning refers to animation of the page. There are three scenarios for these
49 * events: normal page turn (forwards or backwards), aborted page turn (forwards or backwards)
50 * and pan with no animation. The order of events is as follows:
51 * 1) Normal page turn: PagePanStarted -> PageTurnStarted direction -> PagePanFinished -> PageTurnFinished direction
52 * 2) Aborted page turn: PagePanStarted -> PageTurnStarted direction -> PageTurnStarted opposite direction
53 * -> PagePanFinished -> PageTurnFinished opposite direction
54 * 3) Pan with no animation: PagePanStarted -> PagePanFinished
55 * Pan with no animation will occur when the user touches the page in an area that does not start the
58 class PageTurnView : public Control
63 * Creates an empty PageTurnView handle. Only derived versions can be instantiated.
64 * Calling member function with an uninitialized handle is not allowed.
69 * Copy constructor. Creates another handle that points to the same real object
70 * @param[in] handle Handle to copy from
72 PageTurnView( const PageTurnView& handle );
75 * Assignment operator. Changes this handle to point to another real object
77 PageTurnView& operator=( const PageTurnView& handle );
82 virtual ~PageTurnView();
85 * Downcast an Object handle to PageTurnView.
86 * If handle points to an PageTurnView the downcast produces valid handle.
87 * If not the returned handle is left uninitialized.
88 * @param[in] handle Handle to an object
89 * @return handle to a PageTurnView or an uninitialized handle
91 static PageTurnView DownCast( BaseHandle handle );
94 * Set the spine shadow parameter to the shader effects
95 * The two parameters are the major&minor radius (in pixels) to form an ellipse shape
96 * The top-left quarter of this ellipse is used to calculate spine normal for simulating shadow
97 * @param [in] spineShadowParameter The major&minor ellipse radius for the simulated spine shadow
99 void SetSpineShadowParameter( const Vector2& spineShadowParameter );
102 * Retrieve the spine shadow parameter of the shader effects
103 * @return The major&minor ellipse radius for the simulated spine shadow
105 Vector2 GetSpineShadowParameter();
108 * Go to a specific page
109 * @param[in] pageId The new current page index
111 void GoToPage( unsigned int pageId );
114 * Retrieve the index of the current Page
115 * @return The index of the current page
117 unsigned int GetCurrentPage();
121 * Case 1, the page factory passes image actor into the view as page content, do nothing.
122 * Case 2, the page factory passes an actor tree into the view as page content,
123 * the actor tree will receive the touch event in edit mode, and set the refresh rate of the off screen render task to always
124 * @return an empty actor in case 1; the actor tree root of the current page
126 Actor EnterEditMode();
130 * Case 1, the page factory passes image actor into the view as page content, do nothing.
131 * Case 2, the page factory passes an actor tree into the view as page content,
132 * the page actor will receive all the touch event, and set the refresh rage of the off screen render task to once.
134 void LeaveEditMode();
137 * Return the actor get hit in the actor tree of the current page by given the touch position on the PageTurnView
138 * @param[in] screenCoordinates The hit position of the PageTurnView
139 * @param[out] actorCoordinates The local hit position of the hitted actor
140 * @return the hitted actor
142 Actor GetHitActor( Vector2& screenCoordinates, Vector2& actorCoordinates );
145 * Refresh all the cached pages by calling the render task to refresh.
150 * Refresh current page by calling the render task to refresh
152 void RefreshCurrentPage();
156 // Page Turned signal, with page index and boolean turning direction (true = forward, false = backward)
157 typedef SignalV2< void ( PageTurnView, unsigned int, bool ) > PageTurnSignal;
158 typedef SignalV2< void ( PageTurnView ) > PagePanSignal;
161 * Signal emitted when a page has started to turn over.
162 * A callback of the following type may be connected:
164 * void YourCallBackName( PageTurnView pageTurnView, unsigned int pageIndex, bool isTurningForward );
166 * @return The signal to connect to
168 PageTurnSignal& PageTurnStartedSignal();
171 * Signal emitted when a page has finished turning over.
172 * A callback of the following type may be connected:
174 * void YourCallBackName( PageTurnView pageTurnView, unsigned int pageIndex, bool isTurningForward );
176 * @return The signal to connect to
178 PageTurnSignal& PageTurnFinishedSignal();
181 * Signal emitted when a page pan has commenced
182 * A callback of the following type may be connected:
184 * void YourCallBackName( PageTurnView pageTurnView );
186 * @return The signal to connect to
188 PagePanSignal& PagePanStartedSignal();
191 * Signal emitted when a page pan has finished
192 * A callback of the following type may be connected:
194 * void YourCallBackName( PageTurnView pageTurnView );
196 * @return The signal to connect to
198 PagePanSignal& PagePanFinishedSignal();
200 public: // Not intended for application developers
203 * Creates a handle using the Toolkit::Internal implementation.
204 * @param[in] implementation The Control implementation.
206 DALI_INTERNAL PageTurnView(Internal::PageTurnView& implementation);
209 * Allows the creation of this Control from an Internal::CustomActor pointer.
210 * @param[in] internal A pointer to the internal CustomActor.
212 DALI_INTERNAL PageTurnView(Dali::Internal::CustomActor* internal);
215 } // namespace Toolkit
219 #endif /* __DALI_TOOLKIT_PAGE_TURN_VIEW_H__ */