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+/* -*- 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_EVENTMULTIPLEXER_HXX
+#define INCLUDED_SLIDESHOW_SOURCE_INC_EVENTMULTIPLEXER_HXX
+
+#include "eventhandler.hxx"
+#include "mouseeventhandler.hxx"
+#include "animationeventhandler.hxx"
+#include "pauseeventhandler.hxx"
+#include "shapelistenereventhandler.hxx"
+#include "vieweventhandler.hxx"
+
+#include <memory>
+#include <com/sun/star/uno/Reference.hxx>
+
+#include "unoview.hxx"
+
+namespace com::sun::star::drawing { class XShape; }
+
+namespace slideshow {
+namespace internal {
+
+class EventQueue;
+class UnoViewContainer;
+class AnimationNode;
+
+struct EventMultiplexerImpl;
+
+class RGBColor;
+
+/** Interface for handling view repaint events.
+
+ Classes implementing this interface can be added to an
+ EventMultiplexer object, and are called from there to
+ handle view repaint events.
+*/
+class ViewRepaintHandler
+{
+public:
+ virtual ~ViewRepaintHandler() {}
+
+ /** Notify clobbered view.
+
+ Reasons for a viewChanged notification can be
+ different view size, transformation, or other device
+ properties (color resolution or profile, etc.)
+
+ @param rView
+ The changed view
+ */
+ virtual void viewClobbered( const UnoViewSharedPtr& rView ) = 0;
+};
+
+typedef ::std::shared_ptr< ViewRepaintHandler > ViewRepaintHandlerSharedPtr;
+
+/** Interface for handling hyperlink clicks.
+
+ Classes implementing this interface can be added to an
+ EventMultiplexer object, and are called from there to
+ handle hyperlink events.
+ */
+class HyperlinkHandler
+{
+public:
+ /** Handle the event.
+
+ @param rLink
+ The actual hyperlink URI
+
+ @return true, if this handler has successfully
+ processed the event. When this method returns false,
+ possibly other, less prioritized handlers are called,
+ too.
+ */
+ virtual bool handleHyperlink( OUString const& rLink ) = 0;
+
+protected:
+ ~HyperlinkHandler() {}
+};
+
+typedef ::std::shared_ptr< HyperlinkHandler > HyperlinkHandlerSharedPtr;
+
+/** Interface for handling user paint state changes.
+
+ Classes implementing this interface can be added to an
+ EventMultiplexer object, and are called from there to
+ handle user paint events.
+*/
+class UserPaintEventHandler
+{
+public:
+ virtual ~UserPaintEventHandler() {}
+ virtual bool colorChanged( RGBColor const& rUserColor ) = 0;
+ virtual bool widthChanged( double nUserStrokeWidth ) = 0;
+ virtual bool eraseAllInkChanged(bool bEraseAllInk) =0;
+ virtual bool eraseInkWidthChanged(sal_Int32 rEraseInkSize) =0;
+ virtual bool switchEraserMode() = 0;
+ virtual bool switchPenMode() = 0;
+ virtual bool disable() = 0;
+};
+
+typedef ::std::shared_ptr< UserPaintEventHandler > UserPaintEventHandlerSharedPtr;
+
+/** This class multiplexes user-activated and
+ slide-show global events.
+
+ This class listens at the XSlideShowView and fires events
+ registered for certain user actions. Furthermore, global
+ slide show state changes (such as start or end of a slide)
+ are handled as well. Note that registered events which
+ have a non-zero timeout (i.e. events that return non-zero
+ from getActivationTime()) will not be fired immediately
+ after the user action occurred, but only after the given
+ timeout. Which is actually a feature.
+*/
+class EventMultiplexer
+{
+public:
+ /** Create an event multiplexer
+
+ @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
+ EventMultiplexer 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.
+
+ @param rViewContainer
+ Globally managed list of all registered views. Used to
+ determine event sources, and for registering view listeners
+ at.
+ */
+ EventMultiplexer( EventQueue& rEventQueue,
+ UnoViewContainer const& rViewContainer );
+ ~EventMultiplexer();
+ EventMultiplexer(const EventMultiplexer&) = delete;
+ EventMultiplexer& operator=(const EventMultiplexer&) = delete;
+
+ // Management methods
+
+
+ /** Clear all registered handlers.
+ */
+ void clear();
+
+
+ // Automatic mode methods
+
+
+ /** Change automatic mode.
+
+ @param bIsAuto
+ When true, events will be fired automatically, not
+ only triggered by UI events. When false, auto events
+ will quit.
+ */
+ void setAutomaticMode( bool bIsAuto );
+
+ /** Get automatic mode setting.
+ */
+ bool getAutomaticMode() const;
+
+ /** Set the timeout for automatic mode.
+
+ @param nTimeout
+ Timeout, between end of effect until start of next
+ effect.
+ */
+ void setAutomaticTimeout( double nTimeout );
+
+ /** Get automatic mode timeout value.
+ */
+ double getAutomaticTimeout() const;
+
+ // Handler registration methods
+
+
+ /** Register an event handler that will be called when views are
+ changed.
+
+ For each view added, viewAdded() will be called on the
+ handler. For each view removed, viewRemoved() will be
+ called. Each modified view will cause a viewChanged() call on
+ each handler.
+
+ You don't need to deregister the handler, it will be
+ automatically removed, once the pointee becomes stale.
+
+ @param rHandler
+ Handler to call.
+ */
+ void addViewHandler( const ViewEventHandlerWeakPtr& rHandler );
+ void removeViewHandler( const ViewEventHandlerWeakPtr& rHandler );
+
+ /** Register an event handler that will be called when a view gets
+ clobbered.
+
+ Note that <em>all</em> registered handlers will be called when
+ the event. This is in contrast to the mouse events below.
+
+ @param rHandler
+ Handler to call when a view needs a repaint
+ */
+ void addViewRepaintHandler( const ViewRepaintHandlerSharedPtr& rHandler );
+ void removeViewRepaintHandler( const ViewRepaintHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when
+ XShapeListeners are changed.
+
+ @param rHandler
+ Handler to call when a shape listener changes
+ */
+ void addShapeListenerHandler( const ShapeListenerEventHandlerSharedPtr& rHandler );
+ void removeShapeListenerHandler( const ShapeListenerEventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when
+ user paint parameters change.
+
+ @param rHandler
+ Handler to call when a shape listener changes
+ */
+ void addUserPaintHandler( const UserPaintEventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when the
+ user requests the next effect.
+
+ For every nextEffect event, only one of the handlers
+ registered here is called. The handlers are considered
+ with decreasing priority, i.e. the handler with the
+ currently highest priority will be called.
+
+ @param rHandler
+ Handler to call when the next effect should start
+
+ @param nPriority
+ Priority with which the handlers are called. The
+ higher the priority, the earlier this handler will be
+ tried.
+ */
+ void addNextEffectHandler( const EventHandlerSharedPtr& rHandler,
+ double nPriority );
+ void removeNextEffectHandler( const EventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when the
+ slide is just shown.
+
+ Note that <em>all</em> registered handlers will be called
+ when the slide start occurs. This is in contrast to
+ the mouse events below.
+
+ @param rHandler
+ Handler to call when the next slide starts
+ */
+ void addSlideStartHandler( const EventHandlerSharedPtr& rHandler );
+ void removeSlideStartHandler( const EventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when the
+ slide is about to vanish.
+
+ Note that <em>all</em> registered handlers will be
+ called when the slide end occurs. This is in contrast
+ to the mouse events below.
+
+ @param rHandler
+ Handler to call when the current slide ends
+ */
+ void addSlideEndHandler( const EventHandlerSharedPtr& rHandler );
+ void removeSlideEndHandler( const EventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when an
+ XAnimationNode starts its active duration.
+
+ Note that <em>all</em> registered handlers will be called
+ when the animation start occurs. This is in contrast to
+ the mouse events below.
+
+ @param rHandler
+ Handler to call when the animation start
+ */
+ void addAnimationStartHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+ void removeAnimationStartHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when an
+ XAnimationNode ends its active duration.
+
+ Note that <em>all</em> registered handlers will be called
+ when the animation end occurs. This is in contrast to
+ the mouse events below.
+
+ @param rHandler
+ Handler to call when the animation ends
+ */
+ void addAnimationEndHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+ void removeAnimationEndHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when the
+ main animation sequence of a slide ends its active
+ duration.
+
+ Note that <em>all</em> registered handlers will be
+ called when the animation end occurs. This is in
+ contrast to the mouse events below.
+
+ @param rHandler
+ Handler to call when the animation ends
+ */
+ void addSlideAnimationsEndHandler(
+ const EventHandlerSharedPtr& rHandler );
+ void removeSlideAnimationsEndHandler(
+ const EventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when an
+ XAudio node's sound stops playing.
+
+ Note that <em>all</em> registered handlers will be
+ called when the audio stops. This is in contrast to
+ the mouse events below.
+
+ @param rHandler
+ Handler to call when the audio stops
+ */
+ void addAudioStoppedHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+ void removeAudioStoppedHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+
+ /** Register an event handler that will be called when an
+ XCommand node's with the command STOPAUDIO is activated.
+
+ Note that <em>all</em> registered handlers will be
+ called when the audio stops. This is in contrast to
+ the mouse events below.
+
+ @param rHandler
+ Handler to call when command is activated
+ */
+ void addCommandStopAudioHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+ void removeCommandStopAudioHandler(
+ const AnimationEventHandlerSharedPtr& rHandler );
+
+ /** Register a handler that is called when the show enters
+ or exits pause mode.
+ */
+ void addPauseHandler( const PauseEventHandlerSharedPtr& rHandler );
+ void removePauseHandler( const PauseEventHandlerSharedPtr& rHandler );
+
+ /** Register a mouse handler that is called on mouse click
+
+ For every mouse click, only one of the handlers
+ registered here is called. The handlers are considered
+ with decreasing priority, i.e. the handler with the
+ currently highest priority will be called.
+
+ Since the handlers can reject down and up events
+ individually, handlers should expect to be called with
+ non-matching down and up-press counts. If your handler
+ cannot cope with that, it must have the highest
+ priority of all added handlers.
+ */
+ void addClickHandler( const MouseEventHandlerSharedPtr& rHandler,
+ double nPriority );
+ void removeClickHandler( const MouseEventHandlerSharedPtr& rHandler );
+
+ /** Register a mouse handler that is called on a double
+ mouse click
+
+ For every mouse double click, only one of the handlers
+ registered here is called. The handlers are considered
+ with decreasing priority, i.e. the handler with the
+ currently highest priority will be called.
+
+ Since the handlers can reject down and up events
+ individually, handlers should expect to be called with
+ non-matching down and up-press counts. If your handler
+ cannot cope with that, it must have the highest
+ priority of all added handlers.
+ */
+ void addDoubleClickHandler( const MouseEventHandlerSharedPtr& rHandler,
+ double nPriority );
+ void removeDoubleClickHandler( const MouseEventHandlerSharedPtr& rHandler );
+
+ /** Register a mouse handler that is called for mouse moves.
+
+ For every mouse move, only one of the handlers
+ registered here is called. The handlers are considered
+ with decreasing priority, i.e. the handler with the
+ currently highest priority will be called.
+ */
+ void addMouseMoveHandler( const MouseEventHandlerSharedPtr& rHandler,
+ double nPriority );
+ void removeMouseMoveHandler( const MouseEventHandlerSharedPtr& rHandler );
+
+
+ /** Registers a hyperlink click handler.
+
+ For every hyperlink click, only one of the handlers registered
+ here is called. The handlers are considered with decreasing
+ priority, i.e. the handler with the currently highest priority
+ will be called.
+
+ @param rHandler
+ @param nPriority
+ */
+ void addHyperlinkHandler( const HyperlinkHandlerSharedPtr& rHandler,
+ double nPriority );
+ void removeHyperlinkHandler( const HyperlinkHandlerSharedPtr& rHandler );
+
+
+ // External event notifications
+
+
+ /** View added.
+
+ This method adds another view, which the show is
+ displayed on. On every added view, the EventMultiplexer
+ registers mouse and motion event listeners.
+ */
+ void notifyViewAdded( const UnoViewSharedPtr& rView );
+
+ /** View removed
+
+ This method removes a view. Registered mouse and
+ motion event listeners are revoked.
+ */
+ void notifyViewRemoved( const UnoViewSharedPtr& rView );
+
+ /** View changed
+
+ This method announces a changed view to all view
+ listeners. View changes include size and transformation.
+
+ @param rView
+ View that has changed
+ */
+ void notifyViewChanged( const UnoViewSharedPtr& rView );
+
+ /** View changed
+
+ This method announces a changed view to all view
+ listeners. View changes include size and transformation.
+
+ @param xView
+ View that has changed
+ */
+ void notifyViewChanged( const css::uno::Reference<css::presentation::XSlideShowView>& xView );
+
+ /** All Views changed
+
+ This method announces to all view listeners that
+ <em>every</em> known view has changed. View changes include
+ size and transformation.
+ */
+ void notifyViewsChanged();
+
+ /** View clobbered
+
+ This method announces that the given view has been clobbered
+ by something external to the slideshow, and needs an update.
+
+ @param xView
+ View that has been clobbered
+ */
+ void notifyViewClobbered( const css::uno::Reference<css::presentation::XSlideShowView>& xView );
+
+ /** New shape event listener added
+
+ This method announces that the given listener was added for
+ the specified shape.
+ */
+ void notifyShapeListenerAdded( const css::uno::Reference<css::drawing::XShape>& xShape );
+
+ /** A shape event listener was removed
+
+ This method announces that the given listener was removed for
+ the specified shape.
+ */
+ void notifyShapeListenerRemoved( const css::uno::Reference<css::drawing::XShape>& xShape );
+
+ /** Notify a new user paint color
+
+ Sending this notification also implies that user paint is
+ enabled. User paint denotes the feature to draw colored lines
+ on top of the slide content.
+ */
+ void notifyUserPaintColor( RGBColor const& rUserColor );
+
+ /** Notify a new user paint width
+
+ Sending this notification also implies that user paint is
+ enabled. .
+ */
+ void notifyUserPaintStrokeWidth( double rUserStrokeWidth );
+
+
+ /** Notify a new user paint erase all ink mode
+
+ Sending this notification also implies that user paint is
+ enabled. User paint denotes the feature to draw colored lines
+ on top of the slide content.
+ */
+ void notifyEraseAllInk( bool bEraseAllInk );
+ void notifySwitchPenMode();
+ void notifySwitchEraserMode();
+ void notifyEraseInkWidth( sal_Int32 rEraseInkSize );
+
+ /** Notify that user paint is disabled
+
+ User paint denotes the feature to draw colored lines on top of
+ the slide content.
+ */
+ void notifyUserPaintDisabled();
+
+ /** Notify that the user requested the next effect.
+
+ This requests the slideshow to display the next
+ effect, or move to the next slide, if none are left.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifyNextEffect();
+
+ /** Notify that a new slide has started
+
+ This method is to be used from the Presentation object
+ to signal that a new slide is starting now. This will
+ invoke all registered slide start handlers.
+ */
+ void notifySlideStartEvent();
+
+ /** Notify that a slide has ended
+
+ This method is to be used from the Presentation object
+ to signal that a slide is ending now. This will invoke
+ all registered slide end handlers.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifySlideEndEvent();
+
+ /** Notify that the given node enters its active duration.
+
+ This method is to be used from the AnimationNode
+ objects to signal that the active duration
+ begins. This will invoke all registered animation
+ start handlers.
+
+ @param rNode
+ Node which enters active duration.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifyAnimationStart( const AnimationNodeSharedPtr& rNode );
+
+ /** Notify that the given node leaves its active duration.
+
+ This method is to be used from the AnimationNode
+ objects to signal that the active duration
+ ends now. This will invoke all registered animation
+ end handlers.
+
+ @param rNode
+ Node which leaves active duration.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifyAnimationEnd( const AnimationNodeSharedPtr& rNode );
+
+ /** Notify that the slide animations sequence leaves its
+ active duration.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifySlideAnimationsEnd();
+
+ /** Notify that for the given node, audio output has stopped.
+
+ This method is to be used from the AnimationNode
+ objects to signal that audio playback has just
+ stopped. This will invoke all registered audio
+ stopped handlers.
+
+ @param rNode
+ Node for which audio has stopped.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifyAudioStopped( const AnimationNodeSharedPtr& rNode );
+
+ /** Notify that the show has entered or exited pause mode
+
+ This method is to be used from the Presentation object
+ to signal that a slide is entering (bPauseShow=true)
+ or exiting (bPauseShow=false) pause mode. This will
+ invoke all registered slide end handlers.
+ */
+ void notifyPauseMode( bool bPauseShow );
+
+ /** Notify that all audio has to be stopped.
+
+ This method is used by XCommand nodes and all sound
+ playing nodes should listen for this command and
+ stop their sounds when it's fired.
+
+ @return true, if this event was processed by
+ anybody. If false is returned, no handler processed
+ this event (and probably, nothing will happen at all)
+ */
+ bool notifyCommandStopAudio( const AnimationNodeSharedPtr& rNode );
+
+ /** Notifies that a hyperlink has been clicked.
+ */
+ void notifyHyperlinkClicked( OUString const& hyperLink );
+
+private:
+ std::unique_ptr<EventMultiplexerImpl> mpImpl;
+};
+
+} // namespace internal
+} // namespace Presentation
+
+#endif // INCLUDED_SLIDESHOW_SOURCE_INC_EVENTMULTIPLEXER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */