multitouchmanager.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2013-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "input/touch/multitouchmanager.h"
 
#ifdef USE_SDL2
#include "render/graphics.h"
 
#include "gui/sdlinput.h"
#endif // USE_SDL2
#include "debug.h"
 
MultiTouchManager multiTouchManager;
 
MultiTouchManager::MultiTouchManager() :
 mEvents()
{
}
 
MultiTouchManager::~MultiTouchManager()
{
}
 
void MultiTouchManager::init()
{
}
 
#ifdef USE_SDL2
void MultiTouchManager::updateFinger(const SDL_Event &event, const bool active)
{
 const SDL_TouchFingerEvent &touch = event.tfinger;
 MultiTouchEventsMap &device = mEvents[touch.touchId];
 MultiTouchEvent &finger = device[touch.fingerId];
 finger.active = active;
 finger.x = touch.x;
 finger.y = touch.y;
}
 
void MultiTouchManager::handleFingerDown(const SDL_Event &event)
{
 updateFinger(event, true);
 const SDL_TouchFingerEvent &touch = event.tfinger;
 checkDevice(touch.touchId, touch.fingerId);
}
 
void MultiTouchManager::handleFingerUp(const SDL_Event &event)
{
 updateFinger(event, false);
}
 
void MultiTouchManager::checkDevice(const long touchId,
 const long fingerId)
{
 if (fingerId != 1 || !guiInput)
 return;
 
 MultiTouchEventsMap &device = mEvents[touchId];
 MultiTouchEvent &finger0 = device[0];
 if (finger0.active)
 {
 MultiTouchEvent &finger1 = device[1];
 if (finger1.active)
 {
 const int w = mainGraphics->mWidth;
 const int h = mainGraphics->mHeight;
 guiInput->simulateMouseClick(finger0.x * w, finger0.y * h,
 MouseButton::RIGHT);
 }
 }
}
#endif // USE_SDL2