mirror of
https://github.com/vcmi/vcmi.git
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f2cddaa21b
Similar to vcmiserver (app) and vcmiservercommon (lib), now there is vcmiclient (app) and vcmiclientcommon (lib).
339 lines
9.3 KiB
C++
339 lines
9.3 KiB
C++
/*
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* InputSourceTouch.cpp, 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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#include "StdInc.h"
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#include "InputSourceTouch.h"
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#include "InputHandler.h"
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#include "../../lib/CConfigHandler.h"
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#include "../CGameInfo.h"
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#include "../gui/CursorHandler.h"
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#include "../gui/CGuiHandler.h"
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#include "../gui/EventDispatcher.h"
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#include "../gui/MouseButton.h"
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#include "../gui/WindowHandler.h"
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#include "../CServerHandler.h"
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#include "../globalLobby/GlobalLobbyClient.h"
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#if defined(VCMI_ANDROID)
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#include "../../lib/CAndroidVMHelper.h"
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#elif defined(VCMI_IOS)
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#include "../ios/utils.h"
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#endif
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#include <SDL_events.h>
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#include <SDL_hints.h>
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#include <SDL_timer.h>
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InputSourceTouch::InputSourceTouch()
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: lastTapTimeTicks(0), lastLeftClickTimeTicks(0)
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{
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params.useRelativeMode = settings["general"]["userRelativePointer"].Bool();
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params.relativeModeSpeedFactor = settings["general"]["relativePointerSpeedMultiplier"].Float();
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params.longTouchTimeMilliseconds = settings["general"]["longTouchTimeMilliseconds"].Float();
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params.hapticFeedbackEnabled = settings["general"]["hapticFeedback"].Bool();
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params.touchToleranceDistance = settings["input"]["touchToleranceDistance"].Float();
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if (params.useRelativeMode)
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state = TouchState::RELATIVE_MODE;
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else
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state = TouchState::IDLE;
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#ifdef VCMI_EMULATE_TOUCHSCREEN_WITH_MOUSE
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SDL_SetHint(SDL_HINT_MOUSE_TOUCH_EVENTS, "1");
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#else
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SDL_SetHint(SDL_HINT_MOUSE_TOUCH_EVENTS, "0");
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#endif
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SDL_SetHint(SDL_HINT_TOUCH_MOUSE_EVENTS, "0");
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}
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void InputSourceTouch::handleEventFingerMotion(const SDL_TouchFingerEvent & tfinger)
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{
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if (CCS && CCS->curh && settings["video"]["cursor"].String() == "software" && state != TouchState::RELATIVE_MODE)
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CCS->curh->cursorMove(GH.getCursorPosition().x, GH.getCursorPosition().y);
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switch(state)
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{
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case TouchState::RELATIVE_MODE:
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{
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Point screenSize = GH.screenDimensions();
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Point moveDistance {
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static_cast<int>(screenSize.x * params.relativeModeSpeedFactor * tfinger.dx),
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static_cast<int>(screenSize.y * params.relativeModeSpeedFactor * tfinger.dy)
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};
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GH.input().moveCursorPosition(moveDistance);
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if (CCS && CCS->curh)
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CCS->curh->cursorMove(GH.getCursorPosition().x, GH.getCursorPosition().y);
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break;
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}
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case TouchState::IDLE:
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{
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// no-op, might happen in some edge cases, e.g. when fingerdown event was ignored
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break;
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}
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case TouchState::TAP_DOWN_SHORT:
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{
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Point distance = convertTouchToMouse(tfinger) - lastTapPosition;
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if ( std::abs(distance.x) > params.panningSensitivityThreshold || std::abs(distance.y) > params.panningSensitivityThreshold)
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{
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state = TouchState::TAP_DOWN_PANNING;
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GH.events().dispatchGesturePanningStarted(lastTapPosition);
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}
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break;
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}
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case TouchState::TAP_DOWN_PANNING:
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{
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emitPanningEvent(tfinger);
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break;
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}
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case TouchState::TAP_DOWN_DOUBLE:
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{
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emitPinchEvent(tfinger);
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break;
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}
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case TouchState::TAP_DOWN_LONG:
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case TouchState::TAP_DOWN_LONG_AWAIT:
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{
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// no-op
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break;
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}
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}
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}
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void InputSourceTouch::handleEventFingerDown(const SDL_TouchFingerEvent & tfinger)
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{
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// FIXME: better place to update potentially changed settings?
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params.longTouchTimeMilliseconds = settings["general"]["longTouchTimeMilliseconds"].Float();
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params.hapticFeedbackEnabled = settings["general"]["hapticFeedback"].Bool();
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lastTapTimeTicks = tfinger.timestamp;
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switch(state)
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{
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case TouchState::RELATIVE_MODE:
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{
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if(tfinger.x > 0.5)
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{
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if (tfinger.y < 0.5)
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GH.events().dispatchShowPopup(GH.getCursorPosition(), params.touchToleranceDistance);
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else
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GH.events().dispatchMouseLeftButtonPressed(GH.getCursorPosition(), params.touchToleranceDistance);
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}
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break;
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}
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case TouchState::IDLE:
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{
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lastTapPosition = convertTouchToMouse(tfinger);
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GH.input().setCursorPosition(lastTapPosition);
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state = TouchState::TAP_DOWN_SHORT;
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break;
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}
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case TouchState::TAP_DOWN_SHORT:
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{
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GH.input().setCursorPosition(convertTouchToMouse(tfinger));
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GH.events().dispatchGesturePanningStarted(lastTapPosition);
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state = TouchState::TAP_DOWN_DOUBLE;
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break;
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}
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case TouchState::TAP_DOWN_PANNING:
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{
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GH.input().setCursorPosition(convertTouchToMouse(tfinger));
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state = TouchState::TAP_DOWN_DOUBLE;
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break;
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}
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case TouchState::TAP_DOWN_DOUBLE:
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{
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CSH->getGlobalLobby().activateInterface();
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break;
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}
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case TouchState::TAP_DOWN_LONG:
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case TouchState::TAP_DOWN_LONG_AWAIT:
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{
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// no-op
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break;
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}
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}
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}
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void InputSourceTouch::handleEventFingerUp(const SDL_TouchFingerEvent & tfinger)
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{
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switch(state)
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{
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case TouchState::RELATIVE_MODE:
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{
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if(tfinger.x > 0.5)
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{
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if (tfinger.y < 0.5)
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GH.events().dispatchClosePopup(GH.getCursorPosition());
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else
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GH.events().dispatchMouseLeftButtonReleased(GH.getCursorPosition(), params.touchToleranceDistance);
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}
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break;
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}
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case TouchState::IDLE:
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{
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// no-op, might happen in some edge cases, e.g. when fingerdown event was ignored
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break;
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}
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case TouchState::TAP_DOWN_SHORT:
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{
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GH.input().setCursorPosition(convertTouchToMouse(tfinger));
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if(tfinger.timestamp - lastLeftClickTimeTicks < params.doubleTouchTimeMilliseconds && (convertTouchToMouse(tfinger) - lastLeftClickPosition).length() < params.doubleTouchToleranceDistance)
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{
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GH.events().dispatchMouseDoubleClick(convertTouchToMouse(tfinger), params.touchToleranceDistance);
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GH.events().dispatchMouseLeftButtonReleased(convertTouchToMouse(tfinger), params.touchToleranceDistance);
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}
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else
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{
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GH.events().dispatchMouseLeftButtonPressed(convertTouchToMouse(tfinger), params.touchToleranceDistance);
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GH.events().dispatchMouseLeftButtonReleased(convertTouchToMouse(tfinger), params.touchToleranceDistance);
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lastLeftClickTimeTicks = tfinger.timestamp;
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lastLeftClickPosition = convertTouchToMouse(tfinger);
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}
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state = TouchState::IDLE;
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break;
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}
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case TouchState::TAP_DOWN_PANNING:
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{
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GH.events().dispatchGesturePanningEnded(lastTapPosition, convertTouchToMouse(tfinger));
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state = TouchState::IDLE;
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break;
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}
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case TouchState::TAP_DOWN_DOUBLE:
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{
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if (SDL_GetNumTouchFingers(tfinger.touchId) == 1)
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state = TouchState::TAP_DOWN_PANNING;
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if (SDL_GetNumTouchFingers(tfinger.touchId) == 0)
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{
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GH.events().dispatchGesturePanningEnded(lastTapPosition, convertTouchToMouse(tfinger));
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state = TouchState::IDLE;
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}
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break;
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}
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case TouchState::TAP_DOWN_LONG:
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{
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if (SDL_GetNumTouchFingers(tfinger.touchId) == 0)
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{
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state = TouchState::TAP_DOWN_LONG_AWAIT;
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}
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break;
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}
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case TouchState::TAP_DOWN_LONG_AWAIT:
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{
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if (SDL_GetNumTouchFingers(tfinger.touchId) == 0)
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{
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GH.input().setCursorPosition(convertTouchToMouse(tfinger));
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GH.events().dispatchClosePopup(convertTouchToMouse(tfinger));
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state = TouchState::IDLE;
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}
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break;
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}
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}
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}
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void InputSourceTouch::handleUpdate()
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{
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if ( state == TouchState::TAP_DOWN_SHORT)
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{
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uint32_t currentTime = SDL_GetTicks();
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if (currentTime > lastTapTimeTicks + params.longTouchTimeMilliseconds)
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{
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GH.events().dispatchShowPopup(GH.getCursorPosition(), params.touchToleranceDistance);
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if (GH.windows().isTopWindowPopup())
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{
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hapticFeedback();
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state = TouchState::TAP_DOWN_LONG;
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}
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}
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}
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}
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Point InputSourceTouch::convertTouchToMouse(const SDL_TouchFingerEvent & tfinger)
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{
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return convertTouchToMouse(tfinger.x, tfinger.y);
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}
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Point InputSourceTouch::convertTouchToMouse(float x, float y)
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{
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return Point(x * GH.screenDimensions().x, y * GH.screenDimensions().y);
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}
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bool InputSourceTouch::hasTouchInputDevice() const
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{
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return SDL_GetNumTouchDevices() > 0;
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}
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void InputSourceTouch::emitPanningEvent(const SDL_TouchFingerEvent & tfinger)
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{
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Point distance = convertTouchToMouse(-tfinger.dx, -tfinger.dy);
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GH.events().dispatchGesturePanning(lastTapPosition, convertTouchToMouse(tfinger), distance);
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}
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void InputSourceTouch::emitPinchEvent(const SDL_TouchFingerEvent & tfinger)
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{
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int fingers = SDL_GetNumTouchFingers(tfinger.touchId);
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if (fingers < 2)
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return;
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bool otherFingerFound = false;
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double otherX;
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double otherY;
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for (int i = 0; i < fingers; ++i)
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{
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SDL_Finger * finger = SDL_GetTouchFinger(tfinger.touchId, i);
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if (finger && finger->id != tfinger.fingerId)
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{
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otherX = finger->x * GH.screenDimensions().x;
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otherY = finger->y * GH.screenDimensions().y;
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otherFingerFound = true;
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break;
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}
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}
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if (!otherFingerFound)
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return; // should be impossible, but better to avoid weird edge cases
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float thisX = tfinger.x * GH.screenDimensions().x;
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float thisY = tfinger.y * GH.screenDimensions().y;
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float deltaX = tfinger.dx * GH.screenDimensions().x;
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float deltaY = tfinger.dy * GH.screenDimensions().y;
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float oldX = thisX - deltaX - otherX;
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float oldY = thisY - deltaY - otherY;
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float newX = thisX - otherX;
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float newY = thisY - otherY;
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double distanceOld = std::sqrt(oldX * oldX + oldY + oldY);
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double distanceNew = std::sqrt(newX * newX + newY + newY);
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if (distanceOld > params.pinchSensitivityThreshold)
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GH.events().dispatchGesturePinch(lastTapPosition, distanceNew / distanceOld);
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}
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void InputSourceTouch::hapticFeedback() {
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if(params.hapticFeedbackEnabled) {
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#if defined(VCMI_ANDROID)
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CAndroidVMHelper vmHelper;
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vmHelper.callStaticVoidMethod(CAndroidVMHelper::NATIVE_METHODS_DEFAULT_CLASS, "hapticFeedback");
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#elif defined(VCMI_IOS)
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iOS_utils::hapticFeedback();
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#endif
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}
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}
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