path: root/src/gui/sdlinput.cpp

/*
 *  The ManaPlus Client
 *  Copyright (C) 2011-2017  The ManaPlus Developers
 *
 *  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/>.
 */

/*      _______   __   __   __   ______   __   __   _______   __   __
 *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
 *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
 *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
 *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
 * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
 * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
 *
 * Copyright (c) 2004, 2005, 2006, 2007 Olof Naessén and Per Larsson
 * Copyright (C) 2007-2010  The Mana World Development Team
 *
 *                                                         Js_./
 * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
 * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
 *                                                 _Qhm`] _f "'c  1!5m
 * Visit: http://guichan.darkbits.org             )Qk<P ` _: :+' .'  "{[
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 * License: (BSD)                                <Td/Z <fP"5(\"??"\a.  .L
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 */

#include "sdlshared.h"

#include "input/inputmanager.h"

#include "gui/gui.h"
#include "gui/sdlinput.h"

#include "render/graphics.h"

#include <SDL_timer.h>

#include "debug.h"

SDLInput *guiInput = nullptr;

SDLInput::SDLInput() :
    mKeyInputQueue(),
    mMouseInputQueue(),
    mMouseDown(false),
    mMouseInWindow(true)
{
}

KeyInput SDLInput::dequeueKeyInput()
{
    if (mKeyInputQueue.empty())
        return KeyInput();

    KeyInput keyInput = mKeyInputQueue.front();
    mKeyInputQueue.pop();

    return keyInput;
}

MouseInput SDLInput::dequeueMouseInput()
{
    MouseInput mouseInput;

    if (mMouseInputQueue.empty())
        return MouseInput();

    mouseInput = mMouseInputQueue.front();
    mMouseInputQueue.pop();

    return mouseInput;
}

void SDLInput::pushInput(const SDL_Event &event)
{
    BLOCK_START("SDLInput::pushInput")
    KeyInput keyInput;
    MouseInput mouseInput;

    switch (event.type)
    {
        case SDL_KEYDOWN:
        {
            keyInput.setType(KeyEventType::PRESSED);
            convertKeyEventToKey(event, keyInput);
            mKeyInputQueue.push(keyInput);
            break;
        }

        case SDL_KEYUP:
        {
            keyInput.setType(KeyEventType::RELEASED);
            convertKeyEventToKey(event, keyInput);
            mKeyInputQueue.push(keyInput);
            break;
        }

#ifdef USE_SDL2
        case SDL_TEXTINPUT:
            keyInput.setType(KeyEventType::PRESSED);
            keyInput.setKey(Key(KeyValue::TEXTINPUT));
            keyInput.setText(event.text.text);
            mKeyInputQueue.push(keyInput);
            break;

        case SDL_MOUSEWHEEL:
        {
            const int y = event.wheel.y;
            if (y)
            {
                mouseInput.setX(gui->getLastMouseX());
                mouseInput.setY(gui->getLastMouseY());
#ifdef ANDROID
                mouseInput.setReal(0, 0);
#endif  // ANDROID

                mouseInput.setButton(MouseButton::WHEEL);
                if (y > 0)
                    mouseInput.setType(MouseEventType::WHEEL_MOVED_UP);
                else
                    mouseInput.setType(MouseEventType::WHEEL_MOVED_DOWN);
                mouseInput.setTimeStamp(SDL_GetTicks());
                mMouseInputQueue.push(mouseInput);
            }

            break;
        }
#endif  // USE_SDL2

#ifdef ANDROID
#ifndef USE_SDL2
        case SDL_ACCELEROMETER:
            break;
#endif  // USE_SDL2
#endif  // ANDROID

        case SDL_MOUSEBUTTONDOWN:
        {
            mMouseDown = true;
            const int scale = mainGraphics->getScale();
            const int x = event.button.x / scale;
            const int y = event.button.y / scale;
            mouseInput.setX(x);
            mouseInput.setY(y);
#ifdef ANDROID
#ifdef USE_SDL2
            mouseInput.setReal(x, y);
#else  // USE_SDL2

            mouseInput.setReal(event.button.realx / scale,
                event.button.realy / scale);
#endif  // USE_SDL2
#endif  // ANDROID

            mouseInput.setButton(convertMouseButton(event.button.button));

#ifndef USE_SDL2
            if (event.button.button == SDL_BUTTON_WHEELDOWN)
                mouseInput.setType(MouseEventType::WHEEL_MOVED_DOWN);
            else if (event.button.button == SDL_BUTTON_WHEELUP)
                mouseInput.setType(MouseEventType::WHEEL_MOVED_UP);
            else
#endif  // USE_SDL2
                mouseInput.setType(MouseEventType::PRESSED);
            mouseInput.setTimeStamp(SDL_GetTicks());
            mMouseInputQueue.push(mouseInput);
            break;
        }
        case SDL_MOUSEBUTTONUP:
        {
            mMouseDown = false;
            const int scale = mainGraphics->getScale();
            const int x = event.button.x / scale;
            const int y = event.button.y / scale;
            mouseInput.setX(x);
            mouseInput.setY(y);
#ifdef ANDROID
#ifdef USE_SDL2
            mouseInput.setReal(x, y);
#else  // USE_SDL2

            mouseInput.setReal(event.button.realx / scale,
                event.button.realy / scale);
#endif  // USE_SDL2
#endif  // ANDROID

            mouseInput.setButton(convertMouseButton(event.button.button));
            mouseInput.setType(MouseEventType::RELEASED);
            mouseInput.setTimeStamp(SDL_GetTicks());
            mMouseInputQueue.push(mouseInput);
            break;
        }
        case SDL_MOUSEMOTION:
        {
            const int scale = mainGraphics->getScale();
            const int x = event.motion.x / scale;
            const int y = event.motion.y / scale;
            mouseInput.setX(x);
            mouseInput.setY(y);
#ifdef ANDROID
#ifdef USE_SDL2
            mouseInput.setReal(x, y);
#else  // USE_SDL2

            mouseInput.setReal(event.motion.realx / scale,
                event.motion.realy / scale);
#endif  // USE_SDL2
#endif  // ANDROID

            mouseInput.setButton(MouseButton::EMPTY);
            mouseInput.setType(MouseEventType::MOVED);
            mouseInput.setTimeStamp(SDL_GetTicks());
            mMouseInputQueue.push(mouseInput);
            break;
        }
#ifndef USE_SDL2
        case SDL_ACTIVEEVENT:
            /*
             * This occurs when the mouse leaves the window and the Gui-chan
             * application loses its mousefocus.
             */
            if ((event.active.state & SDL_APPMOUSEFOCUS) != 0 &&
                event.active.gain == 0u)
            {
                mMouseInWindow = false;

                if (!mMouseDown)
                {
                    mouseInput.setX(-1);
                    mouseInput.setY(-1);
                    mouseInput.setButton(MouseButton::EMPTY);
                    mouseInput.setType(MouseEventType::MOVED);
                    mMouseInputQueue.push(mouseInput);
                }
            }

            if ((event.active.state & SDL_APPMOUSEFOCUS) != 0 &&
                event.active.gain != 0u)
            {
                mMouseInWindow = true;
            }
            break;
#endif  // USE_SDL2

        default:
            break;
    }  // end switch
    BLOCK_END("SDLInput::pushInput")
}

void SDLInput::convertKeyEventToKey(const SDL_Event &event, KeyInput &keyInput)
{
    keyInput.setKey(Key(convertKeyCharacter(event)));
    const InputActionT actionId = inputManager.getActionByKey(event);
    if (actionId > InputAction::NO_VALUE)
        keyInput.setActionId(actionId);
}

MouseButtonT SDLInput::convertMouseButton(const int button)
{
    switch (button)
    {
        case SDL_BUTTON_LEFT:
            return MouseButton::LEFT;
        case SDL_BUTTON_RIGHT:
            return MouseButton::RIGHT;
        case SDL_BUTTON_MIDDLE:
            return MouseButton::MIDDLE;
#ifndef USE_SDL2
        case SDL_BUTTON_WHEELUP:
        case SDL_BUTTON_WHEELDOWN:
            return MouseButton::EMPTY;
#endif  // USE_SDL2

        default:
            // We have an unknown mouse type which is ignored.
            logger->log("unknown button type: %d", button);
            return MouseButton::EMPTY;
    }
}

void SDLInput::simulateMouseClick(const int x, const int y,
                                  const MouseButtonT button)
{
    MouseInput mouseInput;
    mouseInput.setX(x);
    mouseInput.setY(y);
    mouseInput.setReal(x, y);
    mouseInput.setButton(button);
    mouseInput.setType(MouseEventType::PRESSED);
    mouseInput.setTimeStamp(SDL_GetTicks());
    mMouseInputQueue.push(mouseInput);
    mouseInput.setType(MouseEventType::RELEASED);
    mouseInput.setTimeStamp(SDL_GetTicks());
    mMouseInputQueue.push(mouseInput);
}

void SDLInput::simulateMouseMove()
{
    if (gui == nullptr)
        return;

    int x, y;
    Gui::getMouseState(x, y);

    MouseInput mouseInput;
    mouseInput.setX(x);
    mouseInput.setY(y);
    mouseInput.setReal(x, y);
    mouseInput.setButton(MouseButton::EMPTY);
    mouseInput.setType(MouseEventType::MOVED);
    mouseInput.setTimeStamp(SDL_GetTicks());
    mMouseInputQueue.push(mouseInput);
}

void SDLInput::simulateKey(const int guiKey,
                           const InputActionT actionId)
{
    KeyInput keyInput;
    keyInput.setType(KeyEventType::PRESSED);
#ifdef USE_SDL2
    char str[2];
    str[0] = CAST_S8(guiKey);
    str[1] = 0;

    keyInput.setKey(Key(KeyValue::TEXTINPUT));
    keyInput.setText(str);
#else  // USE_SDL2

    keyInput.setKey(Key(guiKey));

#endif  // USE_SDL2

    if (actionId > InputAction::NO_VALUE)
        keyInput.setActionId(actionId);
    mKeyInputQueue.push(keyInput);
}