mirror of
https://github.com/vcmi/vcmi.git
synced 2024-12-14 10:12:59 +02:00
114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/*
|
|
* EventsReceiver.h, part of VCMI engine
|
|
*
|
|
* Authors: listed in file AUTHORS in main folder
|
|
*
|
|
* License: GNU General Public License v2.0 or later
|
|
* Full text of license available in license.txt file, in main folder
|
|
*
|
|
*/
|
|
#pragma once
|
|
|
|
VCMI_LIB_NAMESPACE_BEGIN
|
|
class Point;
|
|
class Rect;
|
|
VCMI_LIB_NAMESPACE_END
|
|
|
|
class EventDispatcher;
|
|
enum class EShortcut;
|
|
enum class InputMode;
|
|
|
|
/// Class that is capable of subscribing and receiving input events
|
|
/// Acts as base class for all UI elements
|
|
class AEventsReceiver
|
|
{
|
|
friend class EventDispatcher;
|
|
|
|
ui16 activeState;
|
|
bool hoveredState;
|
|
bool panningState;
|
|
bool mouseClickedState;
|
|
|
|
protected:
|
|
/// Activates particular events for this UI element. Uses unnamed enum from this class
|
|
void activateEvents(ui16 what);
|
|
/// Deactivates particular events for this UI element. Uses unnamed enum from this class
|
|
void deactivateEvents(ui16 what);
|
|
|
|
/// allows capturing key input so it will be delivered only to this element
|
|
virtual bool captureThisKey(EShortcut key) = 0;
|
|
|
|
/// If true, event of selected type in selected position will be processed by this element
|
|
virtual bool receiveEvent(const Point & position, int eventType) const= 0;
|
|
|
|
virtual const Rect & getPosition() const= 0;
|
|
|
|
public:
|
|
virtual void clickPressed(const Point & cursorPosition) {}
|
|
virtual void clickReleased(const Point & cursorPosition) {}
|
|
virtual void clickPressed(const Point & cursorPosition, bool lastActivated);
|
|
virtual void clickReleased(const Point & cursorPosition, bool lastActivated);
|
|
virtual void clickCancel(const Point & cursorPosition) {}
|
|
virtual void showPopupWindow(const Point & cursorPosition) {}
|
|
virtual void clickDouble(const Point & cursorPosition) {}
|
|
|
|
/// Called when user pans screen by specified distance
|
|
virtual void gesturePanning(const Point & initialPosition, const Point & currentPosition, const Point & lastUpdateDistance) {}
|
|
|
|
/// Called when user pitches screen, requesting scaling by specified factor
|
|
virtual void gesturePinch(const Point & centerPosition, double lastUpdateFactor) {}
|
|
|
|
virtual void wheelScrolled(int distance) {}
|
|
virtual void mouseMoved(const Point & cursorPosition, const Point & lastUpdateDistance) {}
|
|
virtual void mouseDragged(const Point & cursorPosition, const Point & lastUpdateDistance) {}
|
|
virtual void mouseDraggedPopup(const Point & cursorPosition, const Point & lastUpdateDistance) {}
|
|
|
|
/// Called when UI element hover status changes
|
|
virtual void hover(bool on) {}
|
|
|
|
/// Called when UI element gesture status changes
|
|
virtual void gesture(bool on, const Point & initialPosition, const Point & finalPosition) {}
|
|
|
|
virtual void textInputted(const std::string & enteredText) {}
|
|
virtual void textEdited(const std::string & enteredText) {}
|
|
|
|
virtual void keyPressed(EShortcut key) {}
|
|
virtual void keyReleased(EShortcut key) {}
|
|
|
|
virtual void tick(uint32_t msPassed) {}
|
|
|
|
virtual void inputModeChanged(InputMode modi) {}
|
|
|
|
public:
|
|
AEventsReceiver();
|
|
virtual ~AEventsReceiver() = default;
|
|
|
|
/// These are the arguments that can be used to determine what kind of input UI element will receive
|
|
enum
|
|
{
|
|
LCLICK = 1,
|
|
SHOW_POPUP = 2,
|
|
HOVER = 4,
|
|
MOVE = 8,
|
|
KEYBOARD = 16,
|
|
TIME = 32,
|
|
GENERAL = 64,
|
|
WHEEL = 128,
|
|
DOUBLECLICK = 256,
|
|
TEXTINPUT = 512,
|
|
GESTURE = 1024,
|
|
DRAG = 2048,
|
|
INPUT_MODE_CHANGE = 4096,
|
|
DRAG_POPUP = 8192
|
|
};
|
|
|
|
/// Returns true if element is currently hovered by mouse
|
|
bool isHovered() const;
|
|
|
|
/// Returns true if panning/swiping gesture is currently active
|
|
bool isGesturing() const;
|
|
|
|
/// Returns true if element is currently active and may receive events
|
|
bool isActive() const;
|
|
};
|