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| -rw-r--r-- | slideshow/source/inc/usereventqueue.hxx | 269 |
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diff --git a/slideshow/source/inc/usereventqueue.hxx b/slideshow/source/inc/usereventqueue.hxx new file mode 100644 index 000000000..785a8bdf3 --- /dev/null +++ b/slideshow/source/inc/usereventqueue.hxx @@ -0,0 +1,269 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#ifndef INCLUDED_SLIDESHOW_SOURCE_INC_USEREVENTQUEUE_HXX +#define INCLUDED_SLIDESHOW_SOURCE_INC_USEREVENTQUEUE_HXX + +#include <com/sun/star/animations/XAnimationNode.hpp> + +#include "eventmultiplexer.hxx" +#include "eventqueue.hxx" +#include "shape.hxx" + +/* Definition of UserEventQueue class */ + +namespace slideshow::internal { + +class AllAnimationEventHandler; +class ShapeClickEventHandler; +class ClickEventHandler; +class CursorManager; +class SkipEffectEventHandler; +class RewindEffectEventHandler; +class MouseEnterHandler; +class MouseLeaveHandler; + +/** This class schedules user-activated events. + + This class registers at the EventMultiplexer and fires + events registered for certain user actions. Note that all + events will not be fired immediately after the user action + occurred, but always added to the EventQueue (and fired the + next time that queue is processed). Which is actually a + feature. + + Conceptually, an event is an object that typically is + fired only once. After that, the event is exhausted, and + should be discarded. Therefore, all events registered on + this object are fired and then all references to them are + removed. +*/ +class UserEventQueue +{ +public: + /** Create a user event queue + + @param rEventMultiplexer + The slideshow-global event source, where this class + registers its event handlers. + + @param rEventQueue + Reference to the main event queue. Since we hold this + object by plain reference, it must live longer than we + do. On the other hand, that queue must not fire events + after this object is destroyed, since we might + schedule events there which itself contain plain + references to this object. Basically, EventQueue and + UserEventQueue should have the same lifetime, and since + this is not possible, both must be destructed in a + phased mode: first clear both of any remaining events, + then destruct them. + */ + UserEventQueue( EventMultiplexer& rMultiplexer, + EventQueue& rEventQueue, + CursorManager& rCursorManager ); + ~UserEventQueue(); + UserEventQueue(const UserEventQueue&) = delete; + UserEventQueue& operator=(const UserEventQueue&) = delete; + + /** Clear all registered events. + + This method clears all registered, but + not-yet-executed events. This comes in handy when + force-ending a slide, to avoid interference with the + next slide's event registration. + */ + void clear(); + + /** Set advance on click behaviour. + + @param bAdvanceOnClick + When true, a click somewhere on the slide will also + generate next effect event. In this case, it is + irrelevant where on the slide the mouse is clicked, + i.e. the shape need not be hit by the mouse. + */ + void setAdvanceOnClick( bool bAdvanceOnClick ); + + /** Register an event that will be fired when the given + animation node starts. + + Note that <em>all</em> registered events will be fired + when the animation start occurs. This is in contrast to + the mouse events below. + */ + void registerAnimationStartEvent( + const EventSharedPtr& rEvent, + const css::uno::Reference<css::animations::XAnimationNode>& xNode ); + + /** Register an event that will be fired when the given + animation node ends its active duration. + + Note that <em>all</em> registered events will be fired + when the animation end occurs. This is in contrast to + the mouse events below. + */ + void registerAnimationEndEvent( + const EventSharedPtr& rEvent, + const css::uno::Reference<css::animations::XAnimationNode>& xNode ); + + /** Register an event that will be fired when audio output + stopped for the given animation node. + + Note that <em>all</em> registered events will be fired + when the audio stopping occurs. This is in contrast to + the mouse events below. + */ + void registerAudioStoppedEvent( + const EventSharedPtr& rEvent, + const css::uno::Reference<css::animations::XAnimationNode>& xNode ); + + /** Register an event that is fired when a shape is clicked + + For every mouse click, only one of the events + registered here is fired. The order of fired events is + the order of registration, i.e. the first event + registered will be the one fired for the first mouse + click on the given shape. + */ + void registerShapeClickEvent( const EventSharedPtr& rEvent, + const ShapeSharedPtr& rShape ); + + /** Registers an event that is fired when the current effects(s) + are skipped, .e.g. when the left mouse button is pressed. + Then, all registered events are fired and removed from this + queue. After firing, a next effect event is issued to this + queue to start the next effect. + @param pEvent + The event to execute when skipping the current effect. + @param bSkipTriggersNextEffect + When <TRUE/> then after skipping the current effect the next + effect is triggered. When <FALSE/> then the next effect is not + triggered. + */ + void registerSkipEffectEvent( + EventSharedPtr const& pEvent, + const bool bSkipTriggersNextEffect); + + /** Register an event that is fired to show the next event + + For every next effect event, only one of the events + registered here is fired. The order of fired events is + the order of registration, i.e. the first event + registered will be the one fired for the first mouse + click. When advance-on-click (see method + setAdvanceOnClick()) is enabled, a mouse click + somewhere on the slide will also generate a next + effect event. In this case, it is irrelevant where on + the slide the mouse is clicked, i.e. the shape need + not be hit by the mouse. + */ + void registerNextEffectEvent( const EventSharedPtr& rEvent ); + + /** Register an event that is fired on a double mouse + click on a shape + + For every mouse double click, only one of the events + registered here is fired. The order of fired events is + the order of registration, i.e. the first event + registered will be the one fired for the first mouse + double click. It is irrelevant where on the slide the + mouse is clicked, i.e. the shape need not be hit by + the mouse. + */ + void registerShapeDoubleClickEvent( const EventSharedPtr& rEvent, + const ShapeSharedPtr& rShape ); + + /** Register an event that is fired when the mouse enters + the area of the given shape + + For every enter, only one of the events registered + here is fired. The order of fired events is the order + of registration, i.e. the first event registered will + be the one fired for the first time the mouse enters + the given shape. + */ + void registerMouseEnterEvent( const EventSharedPtr& rEvent, + const ShapeSharedPtr& rShape ); + + /** Register an event that is fired when the mouse leaves + the area of the given shape + + For every leave, only one of the events registered + here is fired. The order of fired events is the order + of registration, i.e. the first event registered will + be the one fired for the first time the mouse leaves + the given shape area. + */ + void registerMouseLeaveEvent( const EventSharedPtr& rEvent, + const ShapeSharedPtr& rShape ); + + /** Typically skipping the current effect is triggered by mouse clicks + or key presses that trigger the next effect. This method allows the + skipping of effects to be triggered programmatically. + */ + void callSkipEffectEventHandler(); + +private: + /** Generically register an event on one of the handlers. + + If the handler is not yet created, do that and + register it via the Functor + */ + template< typename Handler, typename Functor > + void registerEvent( ::std::shared_ptr< Handler >& rHandler, + const EventSharedPtr& rEvent, + const Functor& rRegistrationFunctor ); + + /** Generically register an event on one of the handlers. + + If the handler is not yet created, do that and + register it via the Functor. This version of the + registerEvent method takes an additional parameter + rArg, which is passed as the second argument to + rHandler's addEvent() method. + */ + template< typename Handler, typename Arg, typename Functor > + void registerEvent( ::std::shared_ptr< Handler >& rHandler, + const EventSharedPtr& rEvent, + const Arg& rArg, + const Functor& rRegistrationFunctor ); + + EventMultiplexer& mrMultiplexer; + EventQueue& mrEventQueue; + CursorManager& mrCursorManager; + + ::std::shared_ptr<AllAnimationEventHandler> mpAnimationStartEventHandler; + ::std::shared_ptr<AllAnimationEventHandler> mpAnimationEndEventHandler; + ::std::shared_ptr<AllAnimationEventHandler> mpAudioStoppedEventHandler; + ::std::shared_ptr<ShapeClickEventHandler> mpShapeClickEventHandler; + ::std::shared_ptr<ClickEventHandler> mpClickEventHandler; + ::std::shared_ptr<SkipEffectEventHandler> mpSkipEffectEventHandler; + ::std::shared_ptr<ShapeClickEventHandler> mpShapeDoubleClickEventHandler; + ::std::shared_ptr<MouseEnterHandler> mpMouseEnterHandler; + ::std::shared_ptr<MouseLeaveHandler> mpMouseLeaveHandler; + + bool mbAdvanceOnClick; +}; + +} // namespace presentation::internal + +#endif // INCLUDED_SLIDESHOW_SOURCE_INC_USEREVENTQUEUE_HXX + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |