mirror of
https://github.com/vcmi/vcmi.git
synced 2024-12-04 09:42:40 +02:00
403 lines
11 KiB
C++
403 lines
11 KiB
C++
/*
|
|
* EventDispatcher.cpp, 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
|
|
*
|
|
*/
|
|
#include "StdInc.h"
|
|
#include "EventDispatcher.h"
|
|
|
|
#include "EventsReceiver.h"
|
|
#include "FramerateManager.h"
|
|
#include "CGuiHandler.h"
|
|
#include "MouseButton.h"
|
|
#include "WindowHandler.h"
|
|
|
|
#include "../../lib/Rect.h"
|
|
|
|
template<typename Functor>
|
|
void EventDispatcher::processLists(ui16 activityFlag, const Functor & cb)
|
|
{
|
|
auto processList = [&](ui16 mask, EventReceiversList & lst)
|
|
{
|
|
if(mask & activityFlag)
|
|
cb(lst);
|
|
};
|
|
|
|
processList(AEventsReceiver::LCLICK, lclickable);
|
|
processList(AEventsReceiver::SHOW_POPUP, rclickable);
|
|
processList(AEventsReceiver::HOVER, hoverable);
|
|
processList(AEventsReceiver::MOVE, motioninterested);
|
|
processList(AEventsReceiver::DRAG, draginterested);
|
|
processList(AEventsReceiver::KEYBOARD, keyinterested);
|
|
processList(AEventsReceiver::TIME, timeinterested);
|
|
processList(AEventsReceiver::WHEEL, wheelInterested);
|
|
processList(AEventsReceiver::DOUBLECLICK, doubleClickInterested);
|
|
processList(AEventsReceiver::TEXTINPUT, textInterested);
|
|
processList(AEventsReceiver::GESTURE, panningInterested);
|
|
}
|
|
|
|
void EventDispatcher::activateElement(AEventsReceiver * elem, ui16 activityFlag)
|
|
{
|
|
processLists(activityFlag,[&](EventReceiversList & lst){
|
|
lst.push_front(elem);
|
|
});
|
|
elem->activeState |= activityFlag;
|
|
}
|
|
|
|
void EventDispatcher::deactivateElement(AEventsReceiver * elem, ui16 activityFlag)
|
|
{
|
|
processLists(activityFlag,[&](EventReceiversList & lst){
|
|
auto hlp = std::find(lst.begin(),lst.end(),elem);
|
|
assert(hlp != lst.end());
|
|
lst.erase(hlp);
|
|
});
|
|
elem->activeState &= ~activityFlag;
|
|
}
|
|
|
|
void EventDispatcher::dispatchTimer(uint32_t msPassed)
|
|
{
|
|
EventReceiversList hlp = timeinterested;
|
|
for (auto & elem : hlp)
|
|
{
|
|
if(!vstd::contains(timeinterested,elem))
|
|
continue;
|
|
|
|
elem->tick(msPassed);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchShortcutPressed(const std::vector<EShortcut> & shortcutsVector)
|
|
{
|
|
bool keysCaptured = false;
|
|
|
|
for(auto & i : keyinterested)
|
|
for(EShortcut shortcut : shortcutsVector)
|
|
if(i->captureThisKey(shortcut))
|
|
keysCaptured = true;
|
|
|
|
EventReceiversList miCopy = keyinterested;
|
|
|
|
for(auto & i : miCopy)
|
|
{
|
|
for(EShortcut shortcut : shortcutsVector)
|
|
if(vstd::contains(keyinterested, i) && (!keysCaptured || i->captureThisKey(shortcut)))
|
|
{
|
|
i->keyPressed(shortcut);
|
|
if (keysCaptured)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchShortcutReleased(const std::vector<EShortcut> & shortcutsVector)
|
|
{
|
|
bool keysCaptured = false;
|
|
|
|
for(auto & i : keyinterested)
|
|
for(EShortcut shortcut : shortcutsVector)
|
|
if(i->captureThisKey(shortcut))
|
|
keysCaptured = true;
|
|
|
|
EventReceiversList miCopy = keyinterested;
|
|
|
|
for(auto & i : miCopy)
|
|
{
|
|
for(EShortcut shortcut : shortcutsVector)
|
|
if(vstd::contains(keyinterested, i) && (!keysCaptured || i->captureThisKey(shortcut)))
|
|
{
|
|
i->keyReleased(shortcut);
|
|
if (keysCaptured)
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchMouseDoubleClick(const Point & position, int tolerance)
|
|
{
|
|
handleDoubleButtonClick(position, tolerance);
|
|
}
|
|
|
|
void EventDispatcher::dispatchMouseLeftButtonPressed(const Point & position, int tolerance)
|
|
{
|
|
handleLeftButtonClick(position, tolerance, true);
|
|
}
|
|
|
|
void EventDispatcher::dispatchMouseLeftButtonReleased(const Point & position, int tolerance)
|
|
{
|
|
handleLeftButtonClick(position, tolerance, false);
|
|
}
|
|
|
|
AEventsReceiver * EventDispatcher::findElementInToleranceRange(const EventReceiversList & list, const Point & position, int eventToTest, int tolerance)
|
|
{
|
|
AEventsReceiver * bestElement = nullptr;
|
|
int bestDistance = std::numeric_limits<int>::max();
|
|
|
|
for(auto & i : list)
|
|
{
|
|
// if there is element that can actually receive event then tolerance clicking is disabled
|
|
if( i->receiveEvent(position, eventToTest))
|
|
return nullptr;
|
|
|
|
if (i->getPosition().distanceTo(position) > bestDistance)
|
|
continue;
|
|
|
|
Point center = i->getPosition().center();
|
|
Point distance = center - position;
|
|
|
|
if (distance.lengthSquared() == 0)
|
|
continue;
|
|
|
|
Point moveDelta = distance * tolerance / distance.length();
|
|
Point testPosition = position + moveDelta;
|
|
|
|
if( !i->receiveEvent(testPosition, eventToTest))
|
|
continue;
|
|
|
|
bestElement = i;
|
|
bestDistance = i->getPosition().distanceTo(position);
|
|
}
|
|
|
|
return bestElement;
|
|
}
|
|
|
|
void EventDispatcher::dispatchShowPopup(const Point & position, int tolerance)
|
|
{
|
|
AEventsReceiver * nearestElement = findElementInToleranceRange(rclickable, position, AEventsReceiver::LCLICK, tolerance);
|
|
|
|
auto hlp = rclickable;
|
|
|
|
for(auto & i : hlp)
|
|
{
|
|
if(!vstd::contains(rclickable, i))
|
|
continue;
|
|
|
|
if( !i->receiveEvent(position, AEventsReceiver::SHOW_POPUP) && i != nearestElement)
|
|
continue;
|
|
|
|
i->showPopupWindow(position);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchClosePopup(const Point & position)
|
|
{
|
|
if (GH.windows().isTopWindowPopup())
|
|
GH.windows().popWindows(1);
|
|
|
|
assert(!GH.windows().isTopWindowPopup());
|
|
}
|
|
|
|
void EventDispatcher::handleLeftButtonClick(const Point & position, int tolerance, bool isPressed)
|
|
{
|
|
// WARNING: this approach is NOT SAFE
|
|
// 1) We allow (un)registering elements when list itself is being processed/iterated
|
|
// 2) To avoid iterator invalidation we create a copy of this list for processing
|
|
// HOWEVER it is completely possible (as in, actually happen, no just theory) to:
|
|
// 1) element gets unregistered and deleted from lclickable
|
|
// 2) element is completely deleted, as in - destructor called, memory freed
|
|
// 3) new element is created *with exactly same address(!)
|
|
// 4) new element is registered and code will incorrectly assume that this element is still registered
|
|
// POSSIBLE SOLUTION: make EventReceivers inherit from create_shared_from this and store weak_ptr's in lists
|
|
AEventsReceiver * nearestElement = findElementInToleranceRange(lclickable, position, AEventsReceiver::LCLICK, tolerance);
|
|
auto hlp = lclickable;
|
|
bool lastActivated = true;
|
|
|
|
for(auto & i : hlp)
|
|
{
|
|
if(!vstd::contains(lclickable, i))
|
|
continue;
|
|
|
|
if( i->receiveEvent(position, AEventsReceiver::LCLICK) || i == nearestElement)
|
|
{
|
|
if(isPressed)
|
|
i->clickPressed(position, lastActivated);
|
|
|
|
if (i->mouseClickedState && !isPressed)
|
|
i->clickReleased(position, lastActivated);
|
|
|
|
i->mouseClickedState = isPressed;
|
|
lastActivated = false;
|
|
}
|
|
else
|
|
{
|
|
if(i->mouseClickedState && !isPressed)
|
|
{
|
|
i->mouseClickedState = isPressed;
|
|
i->clickCancel(position);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::handleDoubleButtonClick(const Point & position, int tolerance)
|
|
{
|
|
// WARNING: this approach is NOT SAFE
|
|
// 1) We allow (un)registering elements when list itself is being processed/iterated
|
|
// 2) To avoid iterator invalidation we create a copy of this list for processing
|
|
// HOWEVER it is completely possible (as in, actually happen, no just theory) to:
|
|
// 1) element gets unregistered and deleted from lclickable
|
|
// 2) element is completely deleted, as in - destructor called, memory freed
|
|
// 3) new element is created *with exactly same address(!)
|
|
// 4) new element is registered and code will incorrectly assume that this element is still registered
|
|
// POSSIBLE SOLUTION: make EventReceivers inherit from create_shared_from this and store weak_ptr's in lists
|
|
|
|
AEventsReceiver * nearestElement = findElementInToleranceRange(doubleClickInterested, position, AEventsReceiver::DOUBLECLICK, tolerance);
|
|
bool doubleClicked = false;
|
|
auto hlp = doubleClickInterested;
|
|
|
|
for(auto & i : hlp)
|
|
{
|
|
if(!vstd::contains(doubleClickInterested, i))
|
|
continue;
|
|
|
|
if(i->receiveEvent(position, AEventsReceiver::DOUBLECLICK) || i == nearestElement)
|
|
{
|
|
i->clickDouble(position);
|
|
doubleClicked = true;
|
|
}
|
|
}
|
|
|
|
if(!doubleClicked)
|
|
handleLeftButtonClick(position, tolerance, true);
|
|
}
|
|
|
|
void EventDispatcher::dispatchMouseScrolled(const Point & distance, const Point & position)
|
|
{
|
|
EventReceiversList hlp = wheelInterested;
|
|
for(auto & i : hlp)
|
|
{
|
|
if(!vstd::contains(wheelInterested,i))
|
|
continue;
|
|
|
|
if (i->receiveEvent(position, AEventsReceiver::WHEEL))
|
|
i->wheelScrolled(distance.y);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchTextInput(const std::string & text)
|
|
{
|
|
for(auto it : textInterested)
|
|
{
|
|
it->textInputed(text);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchTextEditing(const std::string & text)
|
|
{
|
|
for(auto it : textInterested)
|
|
{
|
|
it->textEdited(text);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchGesturePanningStarted(const Point & initialPosition)
|
|
{
|
|
auto copied = panningInterested;
|
|
|
|
for(auto it : copied)
|
|
{
|
|
if (!vstd::contains(panningInterested, it))
|
|
continue;
|
|
|
|
if (!it->isGesturing() && it->receiveEvent(initialPosition, AEventsReceiver::GESTURE))
|
|
{
|
|
it->panningState = true;
|
|
it->gesture(true, initialPosition, initialPosition);
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchGesturePanningEnded(const Point & initialPosition, const Point & finalPosition)
|
|
{
|
|
dispatchGesturePanningStarted(initialPosition);
|
|
auto copied = panningInterested;
|
|
|
|
for(auto it : copied)
|
|
{
|
|
if (it->isGesturing())
|
|
{
|
|
it->panningState = false;
|
|
it->gesture(false, initialPosition, finalPosition);
|
|
}
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchGesturePanning(const Point & initialPosition, const Point & currentPosition, const Point & lastUpdateDistance)
|
|
{
|
|
dispatchGesturePanningStarted(initialPosition);
|
|
auto copied = panningInterested;
|
|
|
|
for(auto it : copied)
|
|
{
|
|
if (!vstd::contains(panningInterested, it))
|
|
continue;
|
|
|
|
if (it->isGesturing())
|
|
it->gesturePanning(initialPosition, currentPosition, lastUpdateDistance);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchGesturePinch(const Point & initialPosition, double distance)
|
|
{
|
|
for(auto it : panningInterested)
|
|
{
|
|
if (it->isGesturing())
|
|
it->gesturePinch(initialPosition, distance);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchMouseMoved(const Point & distance, const Point & position)
|
|
{
|
|
EventReceiversList newlyHovered;
|
|
|
|
auto hoverableCopy = hoverable;
|
|
for(auto & elem : hoverableCopy)
|
|
{
|
|
if(elem->receiveEvent(position, AEventsReceiver::HOVER))
|
|
{
|
|
if (!elem->isHovered())
|
|
{
|
|
newlyHovered.push_back((elem));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (elem->isHovered())
|
|
{
|
|
elem->hoveredState = false;
|
|
elem->hover(false);
|
|
}
|
|
}
|
|
}
|
|
|
|
for(auto & elem : newlyHovered)
|
|
{
|
|
elem->hoveredState = true;
|
|
elem->hover(true);
|
|
}
|
|
|
|
//sending active, MotionInterested objects mouseMoved() call
|
|
EventReceiversList miCopy = motioninterested;
|
|
for(auto & elem : miCopy)
|
|
{
|
|
if (!vstd::contains(motioninterested, elem))
|
|
continue;
|
|
|
|
if(elem->receiveEvent(position, AEventsReceiver::HOVER))
|
|
elem->mouseMoved(position, distance);
|
|
}
|
|
}
|
|
|
|
void EventDispatcher::dispatchMouseDragged(const Point & currentPosition, const Point & lastUpdateDistance)
|
|
{
|
|
EventReceiversList diCopy = draginterested;
|
|
for(auto & elem : diCopy)
|
|
{
|
|
if (elem->mouseClickedState)
|
|
elem->mouseDragged(currentPosition, lastUpdateDistance);
|
|
}
|
|
}
|