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Code Issues Releases Activity

Merge pull request #2864 from Laserlicht/double_tap

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support double tap
This commit is contained in:
Nordsoft91 2023-09-19 19:37:49 +02:00 committed by GitHub
commit 461aa97d7e
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5 changed files with 59 additions and 23 deletions
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2
client/eventsSDL/InputSourceMouse.cpp
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@ -48,7 +48,7 @@ void InputSourceMouse::handleEventMouseButtonDown(const SDL_MouseButtonEvent & b
{
case SDL_BUTTON_LEFT:
if(button.clicks > 1)
GH.events().dispatchMouseDoubleClick(position);
GH.events().dispatchMouseDoubleClick(position, 0);
else
GH.events().dispatchMouseLeftButtonPressed(position, 0);
break;

16
client/eventsSDL/InputSourceTouch.cpp
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@ -33,7 +33,7 @@
#include <SDL_timer.h>
InputSourceTouch::InputSourceTouch()
: lastTapTimeTicks(0)
: lastTapTimeTicks(0), lastLeftClickTimeTicks(0)
{
params.useRelativeMode = settings["general"]["userRelativePointer"].Bool();
params.relativeModeSpeedFactor = settings["general"]["relativePointerSpeedMultiplier"].Float();
@ -181,8 +181,18 @@ void InputSourceTouch::handleEventFingerUp(const SDL_TouchFingerEvent & tfinger)
case TouchState::TAP_DOWN_SHORT:
{
GH.input().setCursorPosition(convertTouchToMouse(tfinger));
GH.events().dispatchMouseLeftButtonPressed(convertTouchToMouse(tfinger), params.touchToleranceDistance);
GH.events().dispatchMouseLeftButtonReleased(convertTouchToMouse(tfinger), params.touchToleranceDistance);
if(tfinger.timestamp - lastLeftClickTimeTicks < params.doubleTouchTimeMilliseconds && (convertTouchToMouse(tfinger) - lastLeftClickPosition).length() < params.doubleTouchToleranceDistance)
{
GH.events().dispatchMouseDoubleClick(convertTouchToMouse(tfinger), params.touchToleranceDistance);
GH.events().dispatchMouseLeftButtonReleased(convertTouchToMouse(tfinger), params.touchToleranceDistance);
}
else
{
GH.events().dispatchMouseLeftButtonPressed(convertTouchToMouse(tfinger), params.touchToleranceDistance);
GH.events().dispatchMouseLeftButtonReleased(convertTouchToMouse(tfinger), params.touchToleranceDistance);
lastLeftClickTimeTicks = tfinger.timestamp;
lastLeftClickPosition = convertTouchToMouse(tfinger);
}
state = TouchState::IDLE;
break;
}

9
client/eventsSDL/InputSourceTouch.h
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@ -72,6 +72,12 @@ struct TouchInputParameters
/// tap for period longer than specified here will be qualified as "long tap", triggering corresponding gesture
uint32_t longTouchTimeMilliseconds = 750;
/// time span in where the second tap has to happen for qualifing as "double click"
uint32_t doubleTouchTimeMilliseconds = 500;
/// max distance in where the second tap has to happen for qualifing as "double click"
uint32_t doubleTouchToleranceDistance = 50;
/// moving finger for distance larger than specified will be qualified as panning gesture instead of long press
uint32_t panningSensitivityThreshold = 10;
@ -94,6 +100,9 @@ class InputSourceTouch
uint32_t lastTapTimeTicks;
Point lastTapPosition;
uint32_t lastLeftClickTimeTicks;
Point lastLeftClickPosition;
Point convertTouchToMouse(const SDL_TouchFingerEvent & current);
Point convertTouchToMouse(float x, float y);

52
client/gui/EventDispatcher.cpp
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@ -116,25 +116,9 @@ void EventDispatcher::dispatchShortcutReleased(const std::vector<EShortcut> & sh
}
}
void EventDispatcher::dispatchMouseDoubleClick(const Point & position)
void EventDispatcher::dispatchMouseDoubleClick(const Point & position, int tolerance)
{
bool doubleClicked = false;
auto hlp = doubleClickInterested;
for(auto & i : hlp)
{
if(!vstd::contains(doubleClickInterested, i))
continue;
if(i->receiveEvent(position, AEventsReceiver::DOUBLECLICK))
{
i->clickDouble(position);
doubleClicked = true;
}
}
if(!doubleClicked)
handleLeftButtonClick(position, 0, true);
handleDoubleButtonClick(position, tolerance);
}
void EventDispatcher::dispatchMouseLeftButtonPressed(const Point & position, int tolerance)
@ -246,6 +230,38 @@ void EventDispatcher::handleLeftButtonClick(const Point & position, int toleranc
}
}
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;

3
client/gui/EventDispatcher.h
View File

@ -36,6 +36,7 @@ class EventDispatcher
EventReceiversList panningInterested;
void handleLeftButtonClick(const Point & position, int tolerance, bool isPressed);
void handleDoubleButtonClick(const Point & position, int tolerance);
AEventsReceiver * findElementInToleranceRange(const EventReceiversList & list, const Point & position, int eventToTest, int tolerance);
template<typename Functor>
@ -59,7 +60,7 @@ public:
void dispatchMouseLeftButtonPressed(const Point & position, int tolerance);
void dispatchMouseLeftButtonReleased(const Point & position, int tolerance);
void dispatchMouseScrolled(const Point & distance, const Point & position);
void dispatchMouseDoubleClick(const Point & position);
void dispatchMouseDoubleClick(const Point & position, int tolerance);
void dispatchMouseMoved(const Point & distance, const Point & position);
void dispatchMouseDragged(const Point & currentPosition, const Point & lastUpdateDistance);