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80 lines
3.0 KiB
C++
80 lines
3.0 KiB
C++
/*
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* EventDispatcher.h, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#pragma once
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VCMI_LIB_NAMESPACE_BEGIN
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class Point;
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VCMI_LIB_NAMESPACE_END
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class AEventsReceiver;
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enum class MouseButton;
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enum class EShortcut;
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/// Class that receives events from event producers and dispatches it to UI elements that are interested in this event
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class EventDispatcher
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{
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using EventReceiversList = std::list<AEventsReceiver *>;
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/// list of UI elements that are interested in particular event
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EventReceiversList lclickable;
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EventReceiversList rclickable;
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EventReceiversList hoverable;
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EventReceiversList keyinterested;
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EventReceiversList motioninterested;
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EventReceiversList draginterested;
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EventReceiversList timeinterested;
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EventReceiversList wheelInterested;
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EventReceiversList doubleClickInterested;
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EventReceiversList textInterested;
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EventReceiversList panningInterested;
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void handleLeftButtonClick(const Point & position, int tolerance, bool isPressed);
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void handleDoubleButtonClick(const Point & position, int tolerance);
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AEventsReceiver * findElementInToleranceRange(const EventReceiversList & list, const Point & position, int eventToTest, int tolerance);
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template<typename Functor>
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void processLists(ui16 activityFlag, const Functor & cb);
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public:
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/// add specified UI element as interested. Uses unnamed enum from AEventsReceiver for activity flags
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void activateElement(AEventsReceiver * elem, ui16 activityFlag);
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/// removes specified UI element as interested for specified activities
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void deactivateElement(AEventsReceiver * elem, ui16 activityFlag);
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/// Regular timer event
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void dispatchTimer(uint32_t msPassed);
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/// Shortcut events (e.g. keyboard keys)
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void dispatchShortcutPressed(const std::vector<EShortcut> & shortcuts);
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void dispatchShortcutReleased(const std::vector<EShortcut> & shortcuts);
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/// Mouse events
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void dispatchMouseLeftButtonPressed(const Point & position, int tolerance);
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void dispatchMouseLeftButtonReleased(const Point & position, int tolerance);
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void dispatchMouseScrolled(const Point & distance, const Point & position);
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void dispatchMouseDoubleClick(const Point & position, int tolerance);
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void dispatchMouseMoved(const Point & distance, const Point & position);
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void dispatchMouseDragged(const Point & currentPosition, const Point & lastUpdateDistance);
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void dispatchShowPopup(const Point & position, int tolerance);
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void dispatchClosePopup(const Point & position);
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void dispatchGesturePanningStarted(const Point & initialPosition);
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void dispatchGesturePanningEnded(const Point & initialPosition, const Point & finalPosition);
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void dispatchGesturePanning(const Point & initialPosition, const Point & currentPosition, const Point & lastUpdateDistance);
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void dispatchGesturePinch(const Point & initialPosition, double distance);
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/// Text input events
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void dispatchTextInput(const std::string & text);
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void dispatchTextEditing(const std::string & text);
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};
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