Join gui classes in one.

4 files changed, 888 insertions, 1282 deletions

diff --git a/src/gui/base/gui.cpp b/src/gui/base/gui.cpp
deleted file mode 100644
index 8985ec062..000000000
--- a/src/gui/base/gui.cpp
+++ /dev/null
@@ -1,763 +0,0 @@
-/*
- *  The ManaPlus Client
- *  Copyright (C) 2011-2014  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 - 2008 Olof Naessén and Per Larsson
- *
- *
- * Per Larsson a.k.a finalman
- * Olof Naessén a.k.a jansem/yakslem
- *
- * Visit: http://guichan.sourceforge.net
- *
- * License: (BSD)
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name of Guichan nor the names of its contributors may
- *    be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * For comments regarding functions please see the header file.
- */
-
-#include "gui/base/gui.hpp"
-
-#include "gui/widgets/widget.h"
-
-#include "gui/focushandler.h"
-
-#include "input/mouseinput.h"
-
-#include "listeners/keylistener.h"
-#include "listeners/mouselistener.h"
-
-#include "debug.h"
-
-namespace gcn
-{
-    Gui::Gui() :
-        mTop(nullptr),
-        mGraphics(nullptr),
-        mInput(nullptr),
-        mFocusHandler(new FocusHandler),
-        mTabbing(true),
-        mKeyListeners(),
-        mShiftPressed(false),
-        mMetaPressed(false),
-        mControlPressed(false),
-        mAltPressed(false),
-        mLastMousePressButton(0),
-        mLastMousePressTimeStamp(0),
-        mLastMouseX(0),
-        mLastMouseY(0),
-        mClickCount(1),
-        mLastMouseDragButton(0),
-        mWidgetWithMouseQueue()
-    {
-    }
-
-    Gui::~Gui()
-    {
-        if (Widget::widgetExists(mTop))
-            setTop(nullptr);
-
-        delete mFocusHandler;
-        mFocusHandler = nullptr;
-    }
-
-    void Gui::setTop(Widget* top)
-    {
-        if (mTop)
-            mTop->_setFocusHandler(nullptr);
-        if (top)
-            top->_setFocusHandler(mFocusHandler);
-
-        mTop = top;
-    }
-
-    Widget* Gui::getTop() const
-    {
-        return mTop;
-    }
-
-    void Gui::setGraphics(Graphics* graphics)
-    {
-        mGraphics = graphics;
-    }
-
-    Graphics* Gui::getGraphics() const
-    {
-        return mGraphics;
-    }
-
-    void Gui::setInput(SDLInput* input)
-    {
-        mInput = input;
-    }
-
-    SDLInput* Gui::getInput() const
-    {
-        return mInput;
-    }
-
-    void Gui::logic()
-    {
-    }
-
-    void Gui::draw()
-    {
-    }
-
-    void Gui::focusNone()
-    {
-        mFocusHandler->focusNone();
-    }
-
-    void Gui::setTabbingEnabled(bool tabbing)
-    {
-        mTabbing = tabbing;
-    }
-
-    bool Gui::isTabbingEnabled()
-    {
-        return mTabbing;
-    }
-
-    void Gui::addGlobalKeyListener(KeyListener* keyListener)
-    {
-        mKeyListeners.push_back(keyListener);
-    }
-
-    void Gui::removeGlobalKeyListener(KeyListener* keyListener)
-    {
-        mKeyListeners.remove(keyListener);
-    }
-
-    void Gui::handleMouseInput()
-    {
-    }
-
-    void Gui::handleKeyInput()
-    {
-    }
-
-    void Gui::handleMouseMoved(const MouseInput& mouseInput)
-    {
-        // Check if the mouse leaves the application window.
-        if (!mWidgetWithMouseQueue.empty() && (mouseInput.getX() < 0
-            || mouseInput.getY() < 0 || !mTop->getDimension().isPointInRect(
-            mouseInput.getX(), mouseInput.getY())))
-        {
-            // Distribute an event to all widgets in the
-            // "widget with mouse" queue.
-            while (!mWidgetWithMouseQueue.empty())
-            {
-                Widget *const widget = mWidgetWithMouseQueue.front();
-
-                if (Widget::widgetExists(widget))
-                {
-                    distributeMouseEvent(widget,
-                                         MouseEvent::EXITED,
-                                         mouseInput.getButton(),
-                                         mouseInput.getX(),
-                                         mouseInput.getY(),
-                                         true,
-                                         true);
-                }
-
-                mWidgetWithMouseQueue.pop_front();
-            }
-
-            return;
-        }
-
-        // Check if there is a need to send mouse exited events by
-        // traversing the "widget with mouse" queue.
-        bool widgetWithMouseQueueCheckDone = mWidgetWithMouseQueue.empty();
-        while (!widgetWithMouseQueueCheckDone)
-        {
-            unsigned int iterations = 0;
-            for (std::deque<Widget*>::iterator
-                 iter = mWidgetWithMouseQueue.begin();
-                 iter != mWidgetWithMouseQueue.end();
-                 ++ iter)
-            {
-                Widget *const widget = *iter;
-
-                // If a widget in the "widget with mouse queue" doesn't
-                // exists anymore it should be removed from the queue.
-                if (!Widget::widgetExists(widget))
-                {
-                    mWidgetWithMouseQueue.erase(iter);
-                    break;
-                }
-                else
-                {
-                    int x, y;
-                    widget->getAbsolutePosition(x, y);
-
-                    if (x > mouseInput.getX()
-                        || y > mouseInput.getY()
-                        || x + widget->getWidth() <= mouseInput.getX()
-                        || y + widget->getHeight() <= mouseInput.getY()
-                        || !widget->isVisible())
-                    {
-                        distributeMouseEvent(widget,
-                                             MouseEvent::EXITED,
-                                             mouseInput.getButton(),
-                                             mouseInput.getX(),
-                                             mouseInput.getY(),
-                                             true,
-                                             true);
-                        mClickCount = 1;
-                        mLastMousePressTimeStamp = 0;
-                        mWidgetWithMouseQueue.erase(iter);
-                        break;
-                    }
-                }
-
-                iterations++;
-            }
-
-            widgetWithMouseQueueCheckDone =
-                (iterations == mWidgetWithMouseQueue.size());
-        }
-
-        // Check all widgets below the mouse to see if they are
-        // present in the "widget with mouse" queue. If a widget
-        // is not then it should be added and an entered event should
-        // be sent to it.
-        Widget* parent = getMouseEventSource(
-            mouseInput.getX(), mouseInput.getY());
-        Widget* widget = parent;
-
-        // If a widget has modal mouse input focus then it will
-        // always be returned from getMouseEventSource, but we only wan't to
-        // send mouse entered events if the mouse has actually entered the
-        // widget with modal mouse input focus, hence we need to check if
-        // that's the case. If it's not we should simply ignore to send any
-        // mouse entered events.
-        if (mFocusHandler->getModalMouseInputFocused()
-            && widget == mFocusHandler->getModalMouseInputFocused()
-            && Widget::widgetExists(widget))
-        {
-            int x, y;
-            widget->getAbsolutePosition(x, y);
-
-            if (x > mouseInput.getX() || y > mouseInput.getY()
-                || x + widget->getWidth() <= mouseInput.getX()
-                || y + widget->getHeight() <= mouseInput.getY())
-            {
-                parent = nullptr;
-            }
-        }
-
-        while (parent)
-        {
-            parent = widget->getParent();
-
-            // Check if the widget is present in the "widget with mouse" queue.
-            bool widgetIsPresentInQueue = false;
-            FOR_EACH (std::deque<Widget*>::const_iterator,
-                      iter, mWidgetWithMouseQueue)
-            {
-                if (*iter == widget)
-                {
-                    widgetIsPresentInQueue = true;
-                    break;
-                }
-            }
-
-            // Widget is not present, send an entered event and add
-            // it to the "widget with mouse" queue.
-            if (!widgetIsPresentInQueue
-                && Widget::widgetExists(widget))
-            {
-                distributeMouseEvent(widget,
-                                     MouseEvent::ENTERED,
-                                     mouseInput.getButton(),
-                                     mouseInput.getX(),
-                                     mouseInput.getY(),
-                                     true,
-                                     true);
-                mWidgetWithMouseQueue.push_front(widget);
-            }
-
-            const Widget *const swap = widget;
-            widget = parent;
-            parent = swap->getParent();
-        }
-
-        if (mFocusHandler->getDraggedWidget())
-        {
-            distributeMouseEvent(mFocusHandler->getDraggedWidget(),
-                                 MouseEvent::DRAGGED,
-                                 mLastMouseDragButton,
-                                 mouseInput.getX(),
-                                 mouseInput.getY());
-        }
-        else
-        {
-            Widget *const sourceWidget = getMouseEventSource(
-                mouseInput.getX(), mouseInput.getY());
-
-            distributeMouseEvent(sourceWidget,
-                                 MouseEvent::MOVED,
-                                 mouseInput.getButton(),
-                                 mouseInput.getX(),
-                                 mouseInput.getY());
-        }
-    }
-
-    void Gui::handleMouseWheelMovedDown(const MouseInput& mouseInput)
-    {
-        Widget* sourceWidget = getMouseEventSource(
-            mouseInput.getX(), mouseInput.getY());
-
-        if (mFocusHandler->getDraggedWidget())
-            sourceWidget = mFocusHandler->getDraggedWidget();
-
-        int sourceWidgetX, sourceWidgetY;
-        sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
-
-        distributeMouseEvent(sourceWidget,
-                             MouseEvent::WHEEL_MOVED_DOWN,
-                             mouseInput.getButton(),
-                             mouseInput.getX(),
-                             mouseInput.getY());
-    }
-
-    void Gui::handleMouseWheelMovedUp(const MouseInput& mouseInput)
-    {
-        Widget* sourceWidget = getMouseEventSource(
-            mouseInput.getX(), mouseInput.getY());
-
-        if (mFocusHandler->getDraggedWidget())
-            sourceWidget = mFocusHandler->getDraggedWidget();
-
-        int sourceWidgetX, sourceWidgetY;
-        sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
-
-        distributeMouseEvent(sourceWidget,
-                             MouseEvent::WHEEL_MOVED_UP,
-                             mouseInput.getButton(),
-                             mouseInput.getX(),
-                             mouseInput.getY());
-    }
-
-    Widget* Gui::getWidgetAt(int x, int y)
-    {
-        // If the widget's parent has no child then we have found the widget..
-        Widget* parent = mTop;
-        Widget* child = mTop;
-
-        while (child)
-        {
-            Widget *const swap = child;
-            int parentX, parentY;
-            parent->getAbsolutePosition(parentX, parentY);
-            child = parent->getWidgetAt(x - parentX, y - parentY);
-            parent = swap;
-        }
-
-        return parent;
-    }
-
-    Widget* Gui::getMouseEventSource(int x, int y)
-    {
-        Widget *const widget = getWidgetAt(x, y);
-
-        // +++ possible nullpointer
-        if (mFocusHandler->getModalMouseInputFocused()
-            && !widget->isModalMouseInputFocused())
-        {
-            return mFocusHandler->getModalMouseInputFocused();
-        }
-
-        return widget;
-    }
-
-    Widget* Gui::getKeyEventSource()
-    {
-        Widget* widget = mFocusHandler->getFocused();
-
-        // +++ possible nullpointer
-        while (widget->_getInternalFocusHandler()
-               && widget->_getInternalFocusHandler()->getFocused())
-        {
-            widget = widget->_getInternalFocusHandler()->getFocused();
-        }
-
-        return widget;
-    }
-
-    void Gui::distributeMouseEvent(Widget* source,
-                                   int type,
-                                   int button,
-                                   int x,
-                                   int y,
-                                   bool force,
-                                   bool toSourceOnly)
-    {
-        Widget* parent = source;
-        Widget* widget = source;
-
-        if (mFocusHandler->getModalFocused()
-            && !widget->isModalFocused()
-            && !force)
-        {
-            return;
-        }
-
-        if (mFocusHandler->getModalMouseInputFocused()
-            && !widget->isModalMouseInputFocused()
-            && !force)
-        {
-            return;
-        }
-
-        MouseEvent mouseEvent(source,
-                              mShiftPressed,
-                              mControlPressed,
-                              mAltPressed,
-                              mMetaPressed,
-                              type,
-                              button,
-                              x,
-                              y,
-                              mClickCount);
-
-        while (parent)
-        {
-            // If the widget has been removed due to input
-            // cancel the distribution.
-            if (!Widget::widgetExists(widget))
-                break;
-
-            parent = widget->getParent();
-
-            if (widget->isEnabled() || force)
-            {
-                int widgetX, widgetY;
-                widget->getAbsolutePosition(widgetX, widgetY);
-
-                mouseEvent.mX = x - widgetX;
-                mouseEvent.mY = y - widgetY;
-
-                std::list<MouseListener*> mouseListeners
-                    = widget->_getMouseListeners();
-
-                // Send the event to all mouse listeners of the widget.
-                for (std::list<MouseListener*>::const_iterator
-                     it = mouseListeners.begin();
-                     it != mouseListeners.end();
-                     ++it)
-                {
-                    switch (mouseEvent.getType())
-                    {
-                        case MouseEvent::ENTERED:
-                            (*it)->mouseEntered(mouseEvent);
-                            break;
-                        case MouseEvent::EXITED:
-                            (*it)->mouseExited(mouseEvent);
-                            break;
-                        case MouseEvent::MOVED:
-                            (*it)->mouseMoved(mouseEvent);
-                            break;
-                        case MouseEvent::PRESSED:
-                            (*it)->mousePressed(mouseEvent);
-                            break;
-                        case MouseEvent::RELEASED:
-                            (*it)->mouseReleased(mouseEvent);
-                            break;
-                        case MouseEvent::WHEEL_MOVED_UP:
-                            (*it)->mouseWheelMovedUp(mouseEvent);
-                            break;
-                        case MouseEvent::WHEEL_MOVED_DOWN:
-                            (*it)->mouseWheelMovedDown(mouseEvent);
-                            break;
-                        case MouseEvent::DRAGGED:
-                            (*it)->mouseDragged(mouseEvent);
-                            break;
-                        case MouseEvent::CLICKED:
-                            (*it)->mouseClicked(mouseEvent);
-                            break;
-                        default:
-                            break;
-                    }
-                }
-
-                if (toSourceOnly)
-                    break;
-            }
-
-            const Widget *const swap = widget;
-            widget = parent;
-            parent = swap->getParent();
-
-            // If a non modal focused widget has been reach
-            // and we have modal focus cancel the distribution.
-            if (mFocusHandler->getModalFocused()
-                && !widget->isModalFocused())
-            {
-                break;
-            }
-
-            // If a non modal mouse input focused widget has been reach
-            // and we have modal mouse input focus cancel the distribution.
-            if (mFocusHandler->getModalMouseInputFocused()
-                && !widget->isModalMouseInputFocused())
-            {
-                break;
-            }
-        }
-    }
-
-    void Gui::distributeKeyEvent(KeyEvent& keyEvent)
-    {
-        Widget* parent = keyEvent.getSource();
-        Widget* widget = keyEvent.getSource();
-
-        if (mFocusHandler->getModalFocused()
-            && !widget->isModalFocused())
-        {
-            return;
-        }
-
-        if (mFocusHandler->getModalMouseInputFocused()
-            && !widget->isModalMouseInputFocused())
-        {
-            return;
-        }
-
-        while (parent)
-        {
-            // If the widget has been removed due to input
-            // cancel the distribution.
-            if (!Widget::widgetExists(widget))
-                break;
-
-            parent = widget->getParent();
-
-            if (widget->isEnabled())
-            {
-                std::list<KeyListener*> keyListeners
-                    = widget->_getKeyListeners();
-
-                // Send the event to all key listeners of the source widget.
-                for (std::list<KeyListener*>::const_iterator
-                     it = keyListeners.begin();
-                     it != keyListeners.end();
-                     ++it)
-                {
-                    switch (keyEvent.getType())
-                    {
-                        case KeyEvent::PRESSED:
-                            (*it)->keyPressed(keyEvent);
-                            break;
-                        case KeyEvent::RELEASED:
-                            (*it)->keyReleased(keyEvent);
-                            break;
-                        default:
-                            break;
-                    }
-                }
-            }
-
-            const Widget *const swap = widget;
-            widget = parent;
-            parent = swap->getParent();
-
-            // If a non modal focused widget has been reach
-            // and we have modal focus cancel the distribution.
-            if (mFocusHandler->getModalFocused()
-                && !widget->isModalFocused())
-            {
-                break;
-            }
-        }
-    }
-
-    void Gui::distributeKeyEventToGlobalKeyListeners(KeyEvent& keyEvent)
-    {
-        for (KeyListenerListIterator it = mKeyListeners.begin();
-             it != mKeyListeners.end(); ++ it)
-        {
-            switch (keyEvent.getType())
-            {
-                case KeyEvent::PRESSED:
-                    (*it)->keyPressed(keyEvent);
-                    break;
-                case KeyEvent::RELEASED:
-                    (*it)->keyReleased(keyEvent);
-                    break;
-                default:
-                    break;
-            }
-
-            if (keyEvent.isConsumed())
-                break;
-        }
-    }
-
-    void Gui::handleModalMouseInputFocus()
-    {
-        BLOCK_START("Gui::handleModalMouseInputFocus")
-        // Check if modal mouse input focus has been gained by a widget.
-        if ((mFocusHandler->getLastWidgetWithModalMouseInputFocus()
-            != mFocusHandler->getModalMouseInputFocused())
-            && (!mFocusHandler->getLastWidgetWithModalMouseInputFocus()))
-        {
-            handleModalFocusGained();
-            mFocusHandler->setLastWidgetWithModalMouseInputFocus(
-                mFocusHandler->getModalMouseInputFocused());
-        }
-        // Check if modal mouse input focus has been released.
-        else if ((mFocusHandler->getLastWidgetWithModalMouseInputFocus()
-                 != mFocusHandler->getModalMouseInputFocused())
-                 && (mFocusHandler->getLastWidgetWithModalMouseInputFocus()))
-        {
-            handleModalFocusReleased();
-            mFocusHandler->setLastWidgetWithModalMouseInputFocus(nullptr);
-        }
-        BLOCK_END("Gui::handleModalMouseInputFocus")
-    }
-
-    void Gui::handleModalFocus()
-    {
-        BLOCK_START("Gui::handleModalFocus")
-        // Check if modal focus has been gained by a widget.
-        if ((mFocusHandler->getLastWidgetWithModalFocus()
-            != mFocusHandler->getModalFocused())
-            && (!mFocusHandler->getLastWidgetWithModalFocus()))
-        {
-            handleModalFocusGained();
-            mFocusHandler->setLastWidgetWithModalFocus(
-                mFocusHandler->getModalFocused());
-        }
-        // Check if modal focus has been released.
-        else if ((mFocusHandler->getLastWidgetWithModalFocus()
-                 != mFocusHandler->getModalFocused())
-                 && (mFocusHandler->getLastWidgetWithModalFocus()))
-        {
-            handleModalFocusReleased();
-            mFocusHandler->setLastWidgetWithModalFocus(nullptr);
-        }
-        BLOCK_END("Gui::handleModalFocus")
-    }
-
-    void Gui::handleModalFocusGained()
-    {
-         // Distribute an event to all widgets in the "widget with mouse" queue.
-        while (!mWidgetWithMouseQueue.empty())
-        {
-            Widget *const widget = mWidgetWithMouseQueue.front();
-
-            if (Widget::widgetExists(widget))
-            {
-                distributeMouseEvent(widget,
-                                     MouseEvent::EXITED,
-                                     mLastMousePressButton,
-                                     mLastMouseX,
-                                     mLastMouseY,
-                                     true,
-                                     true);
-            }
-
-            mWidgetWithMouseQueue.pop_front();
-        }
-
-        mFocusHandler->setLastWidgetWithModalMouseInputFocus(
-            mFocusHandler->getModalMouseInputFocused());
-    }
-
-    void Gui::handleModalFocusReleased()
-    {
-         // Check all widgets below the mouse to see if they are
-        // present in the "widget with mouse" queue. If a widget
-        // is not then it should be added and an entered event should
-        // be sent to it.
-        Widget* widget = getMouseEventSource(mLastMouseX, mLastMouseY);
-        Widget* parent = widget;
-
-        while (parent)
-        {
-            parent = widget->getParent();
-
-            // Check if the widget is present in the "widget with mouse" queue.
-            bool widgetIsPresentInQueue = false;
-            FOR_EACH (std::deque<Widget*>::const_iterator,
-                      iter, mWidgetWithMouseQueue)
-            {
-                if (*iter == widget)
-                {
-                    widgetIsPresentInQueue = true;
-                    break;
-                }
-            }
-
-            // Widget is not present, send an entered event and add
-            // it to the "widget with mouse" queue.
-            if (!widgetIsPresentInQueue && Widget::widgetExists(widget))
-            {
-                distributeMouseEvent(widget,
-                                     MouseEvent::ENTERED,
-                                     mLastMousePressButton,
-                                     mLastMouseX,
-                                     mLastMouseY,
-                                     false,
-                                     true);
-                mWidgetWithMouseQueue.push_front(widget);
-            }
-
-            const Widget *const swap = widget;
-            widget = parent;
-            parent = swap->getParent();
-        }
-    }
-}  // namespace gcn
diff --git a/src/gui/base/gui.hpp b/src/gui/base/gui.hpp
deleted file mode 100644
index 4ea923400..000000000
--- a/src/gui/base/gui.hpp
+++ /dev/null
@@ -1,515 +0,0 @@
-/*
- *  The ManaPlus Client
- *  Copyright (C) 2011-2014  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 - 2008 Olof Naessén and Per Larsson
- *
- *
- * Per Larsson a.k.a finalman
- * Olof Naessén a.k.a jansem/yakslem
- *
- * Visit: http://guichan.sourceforge.net
- *
- * License: (BSD)
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name of Guichan nor the names of its contributors may
- *    be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
- * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
- * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
- * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
- * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef GCN_GUI_HPP
-#define GCN_GUI_HPP
-
-#include <list>
-#include <deque>
-
-#include "localconsts.h"
-
-class Event;
-class FocusHandler;
-class Graphics;
-class KeyEvent;
-class KeyListener;
-class MouseInput;
-class SDLInput;
-class Widget;
-
-namespace gcn
-{
-    // The following comment will appear in the doxygen main page.
-    /**
-     * @mainpage
-     * @section Introduction
-     * This documentation is mostly intended as a reference to the API.
-     * If you want to get started with Guichan, we suggest you check out
-     * the programs in the examples directory of the Guichan release.
-     * @n
-     * @n
-     * This documentation is, and will always be, work in progress.
-     * If you find any errors, typos or inconsistencies, or if you feel
-     * something needs to be explained in more detail - don't hesitate to
-     * tell us.
-     */
-
-    /**
-     * Contains a Guichan GUI. This is the core class of Guichan to which
-     * implementations of back ends are passed, to make Guichan work with
-     * a specific library, and to where the top widget (root widget of GUI)
-     * is added. If you want to be able to have more then one widget in your 
-     * GUI, the top widget should be a container.
-     *
-     * A Gui object cannot work properly without passing back end 
-     * implementations to it. A Gui object must have an implementation of a
-     * Graphics and an implementation of Input. 
-     *
-     * NOTE: A complete GUI also must have the ability to load images.
-     *       Images are loaded with the Image class, so to make Guichan
-     *       able to load images an implementation of ImageLoader must be
-     *       passed to Image.
-     *
-     * @see Graphics, Input, Image
-     */
-    class Gui
-    {
-    public:
-        /**
-         * Constructor.
-         */
-        Gui();
-
-        A_DELETE_COPY(Gui)
-
-        /**
-         * Destructor.
-         */
-        virtual ~Gui();
-
-        /**
-         * Sets the top widget. The top widget is the root widget
-         * of the GUI. If you want a GUI to be able to contain more
-         * than one widget the top widget should be a container.
-         *
-         * @param top The top widget.
-         * @see Container
-         * @since 0.1.0
-         */
-        virtual void setTop(Widget* top);
-
-        /**
-         * Gets the top widget. The top widget is the root widget
-         * of the GUI.
-         *
-         * @return The top widget. NULL if no top widget has been set.
-         * @since 0.1.0
-         */
-        virtual Widget* getTop() const A_WARN_UNUSED;
-
-        /**
-         * Sets the graphics object to use for drawing.
-         *
-         * @param graphics The graphics object to use for drawing.
-         * @see getGraphics, AllegroGraphics, HGEGraphics, 
-         *      OpenLayerGraphics, OpenGLGraphics, SDLGraphics
-         * @since 0.1.0
-         */
-        virtual void setGraphics(Graphics* graphics);
-
-        /**
-         * Gets the graphics object used for drawing.
-         *
-         *  @return The graphics object used for drawing. NULL if no
-         *          graphics object has been set.
-         * @see setGraphics, AllegroGraphics, HGEGraphics, 
-         *      OpenLayerGraphics, OpenGLGraphics, SDLGraphics
-         * @since 0.1.0
-         */
-        virtual Graphics* getGraphics() const A_WARN_UNUSED;
-
-        /**
-         * Sets the input object to use for input handling.
-         *
-         * @param input The input object to use for input handling.
-         * @see getInput, AllegroInput, HGEInput, OpenLayerInput,
-         *      SDLInput
-         * @since 0.1.0
-         */
-        virtual void setInput(SDLInput* input);
-
-        /**
-         * Gets the input object being used for input handling.
-         *
-         *  @return The input object used for handling input. NULL if no
-         *          input object has been set.
-         * @see setInput, AllegroInput, HGEInput, OpenLayerInput,
-         *      SDLInput
-         * @since 0.1.0
-         */
-        virtual SDLInput* getInput() const A_WARN_UNUSED;
-
-        /**
-         * Performs logic of the GUI. By calling this function all logic
-         * functions down in the GUI heirarchy will be called. When logic
-         * is called for Gui, user input will be handled.
-         *
-         * @see Widget::logic
-         * @since 0.1.0
-         */
-        virtual void logic();
-
-        /**
-         * Draws the GUI. By calling this funcion all draw functions
-         * down in the GUI hierarchy will be called. When draw is called
-         * the used Graphics object will be initialised and drawing of
-         * the top widget will commence.
-         *
-         * @see Widget::draw
-         * @since 0.1.0
-         */
-        virtual void draw();
-
-        /**
-         * Focuses none of the widgets in the Gui.
-         *
-         * @since 0.1.0
-         */
-        virtual void focusNone();
-
-        /**
-         * Sets tabbing enabled, or not. Tabbing is the usage of
-         * changing focus by utilising the tab key.
-         *
-         * @param tabbing True if tabbing should be enabled, false
-         *                otherwise.
-         * @see isTabbingEnabled
-         * @since 0.1.0
-         */
-        virtual void setTabbingEnabled(bool tabbing);
-
-        /**
-         * Checks if tabbing is enabled.
-         *
-         * @return True if tabbing is enabled, false otherwise.
-         * @see setTabbingEnabled
-         * @since 0.1.0
-         */
-        virtual bool isTabbingEnabled();
-
-        /**
-         * Adds a global key listener to the Gui. A global key listener
-         * will receive all key events generated from the GUI and global
-         * key listeners will receive the events before key listeners
-         * of widgets.
-         *
-         * @param keyListener The key listener to add.
-         * @see removeGlobalKeyListener
-         * @since 0.5.0
-         */
-        virtual void addGlobalKeyListener(KeyListener* keyListener);
-
-        /**
-         * Removes global key listener from the Gui.
-         *
-         * @param keyListener The key listener to remove.
-         * @throws Exception if the key listener hasn't been added.
-         * @see addGlobalKeyListener
-         * @since 0.5.0
-         */
-        virtual void removeGlobalKeyListener(KeyListener* keyListener);
-
-    protected:
-        /**
-         * Handles all mouse input.
-         *
-         * @since 0.6.0
-         */
-        virtual void handleMouseInput();
-
-        /**
-         * Handles key input.
-         *
-         * @since 0.6.0
-         */
-        virtual void handleKeyInput();
-
-        /**
-         * Handles mouse moved input.
-         *
-         * @param mouseInput The mouse input to handle.
-         * @since 0.6.0
-         */
-        virtual void handleMouseMoved(const MouseInput& mouseInput);
-
-        /**
-         *
-         * Handles mouse wheel moved down input.
-         *
-         * @param mouseInput The mouse input to handle.
-         * @since 0.6.0
-         */
-        virtual void handleMouseWheelMovedDown(const MouseInput& mouseInput);
-
-        /**
-         * Handles mouse wheel moved up input.
-         *
-         * @param mouseInput The mouse input to handle.
-         * @since 0.6.0
-         */
-        virtual void handleMouseWheelMovedUp(const MouseInput& mouseInput);
-
-        /**
-         * Handles modal focus. Modal focus needs to be checked at 
-         * each logic iteration as it might be necessary to distribute
-         * mouse entered or mouse exited events.
-         *
-         * @since 0.8.0
-         */
-        virtual void handleModalFocus();
-
-        /**
-         * Handles modal mouse input focus. Modal mouse input focus needs 
-         * to be checked at each logic iteration as it might be necessary to 
-         * distribute mouse entered or mouse exited events.
-         *
-         * @since 0.8.0
-         */
-        virtual void handleModalMouseInputFocus();
-
-        /**
-         * Handles modal focus gained. If modal focus has been gained it might
-         * be necessary to distribute mouse entered or mouse exited events.
-         *
-         * @since 0.8.0
-         */
-        virtual void handleModalFocusGained();
-
-        /**
-         * Handles modal mouse input focus gained. If modal focus has been
-         * gained it might be necessary to distribute mouse entered or mouse
-         * exited events.
-         *
-         * @since 0.8.0
-         */
-        virtual void handleModalFocusReleased();
-
-        /**
-         * Distributes a mouse event.
-         *
-         * @param type The type of the event to distribute,
-         * @param button The button of the event (if any used) to distribute.
-         * @param x The x coordinate of the event.
-         * @param y The y coordinate of the event.
-         * @param fource indicates whether the distribution should be forced or not.
-         *               A forced distribution distributes the event even if a widget
-         *               is not enabled, not visible, another widget has modal
-         *               focus or another widget has modal mouse input focus. 
-         *               Default value is false.
-         * @param toSourceOnly indicates whether the distribution should be to the
-         *                     source widget only or to it's parent's mouse listeners
-         *                     as well.
-         *
-         * @since 0.6.0
-         */
-        virtual void distributeMouseEvent(Widget* source,
-                                          int type,
-                                          int button,
-                                          int x,
-                                          int y,
-                                          bool force = false,
-                                          bool toSourceOnly = false);
-
-        /**
-         * Distributes a key event.
-         *
-         * @param keyEvent The key event to distribute.
-
-         * @since 0.6.0
-         */
-        virtual void distributeKeyEvent(KeyEvent& keyEvent);
-
-        /**
-         * Distributes a key event to the global key listeners.
-         *
-         * @param keyEvent The key event to distribute.
-         *
-         * @since 0.6.0
-         */
-        virtual void distributeKeyEventToGlobalKeyListeners(KeyEvent&
-                                                            keyEvent);
-
-        /**
-         * Gets the widget at a certain position.
-         *
-         * @return The widget at a certain position.
-         * @since 0.6.0
-         */
-        virtual Widget* getWidgetAt(int x, int y) A_WARN_UNUSED;
-
-        /**
-         * Gets the source of the mouse event.
-         *
-         * @return The source widget of the mouse event.
-         * @since 0.6.0
-         */
-        virtual Widget* getMouseEventSource(int x, int y) A_WARN_UNUSED;
-
-        /**
-         * Gets the source of the key event.
-         *
-         * @return The source widget of the key event.
-         * @since 0.6.0
-         */
-        virtual Widget* getKeyEventSource() A_WARN_UNUSED;
-
-        /**
-         * Holds the top widget.
-         */
-        Widget* mTop;
-
-        /**
-         * Holds the graphics implementation used.
-         */
-        Graphics* mGraphics;
-
-        /**
-         * Holds the input implementation used.
-         */
-        SDLInput* mInput;
-
-        /**
-         * Holds the focus handler for the Gui.
-         */
-        FocusHandler* mFocusHandler;
-
-        /**
-         * True if tabbing is enabled, false otherwise.
-         */
-        bool mTabbing;
-
-        /**
-         * Typedef.
-         */
-        typedef std::list<KeyListener*> KeyListenerList;
-
-        /**
-         * Typedef.
-         */
-        typedef KeyListenerList::iterator KeyListenerListIterator;
-
-        /**
-         * Holds the global key listeners of the Gui.
-         */
-        KeyListenerList mKeyListeners;
-
-        /**
-         * True if shift is pressed, false otherwise.
-         */
-        bool mShiftPressed;
-
-        /**
-         * True if meta is pressed, false otherwise.
-         */
-        bool mMetaPressed;
-
-        /**
-         * True if control is pressed, false otherwise.
-         */
-        bool mControlPressed;
-
-        /**
-         * True if alt is pressed, false otherwise.
-         */
-        bool mAltPressed;
-
-        /**
-         * Holds the last mouse button pressed.
-         */
-        unsigned int mLastMousePressButton;
-
-        /**
-         * Holds the last mouse press time stamp.
-         */
-        int mLastMousePressTimeStamp;
-
-        /**
-         * Holds the last mouse x coordinate.
-         */
-        int mLastMouseX;
-
-        /**
-         * Holds the last mouse y coordinate.
-         */
-        int mLastMouseY;
-
-        /**
-         * Holds the current click count. Used to keep track
-         * of clicks for a the last pressed button.
-         */
-        int mClickCount;
-
-        /**
-         * Holds the last button used when a drag of a widget
-         * was initiated. Used to be able to release a drag
-         * when the same button is released.
-         */
-        int mLastMouseDragButton;
-
-        /**
-         * Holds a stack with all the widgets with the mouse.
-         * Used to properly distribute mouse events.
-         */
-        std::deque<Widget*> mWidgetWithMouseQueue;
-    };
-}  // namespace gcn
-
-#endif  // end GCN_GUI_HPP
-
-/* yakslem  - "Women, it's a constant struggle."
- * finalman - "Yes, but sometimes they succeed with their guesses."
- * yaklsem  - "...eh...I was talking about love."
- * finalman - "Oh...ok..."
- * An awkward silence followed.
- */
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 5914e43d9..31722797f 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -20,6 +20,49 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Guichan nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #include "gui/gui.h"
 
 #include "gui/focushandler.h"
@@ -41,6 +84,8 @@
 #include "events/keyevent.h"
 
 #include "listeners/focuslistener.h"
+#include "listeners/keylistener.h"
+#include "listeners/mouselistener.h"
 
 #include "input/keydata.h"
 #include "input/keyinput.h"
@@ -91,7 +136,23 @@ class GuiConfigListener final : public ConfigListener
 };
 
 Gui::Gui() :
-    gcn::Gui(),
+    mTop(nullptr),
+    mGraphics(nullptr),
+    mInput(nullptr),
+    mFocusHandler(new FocusHandler),
+    mTabbing(true),
+    mKeyListeners(),
+    mShiftPressed(false),
+    mMetaPressed(false),
+    mControlPressed(false),
+    mAltPressed(false),
+    mLastMousePressButton(0),
+    mLastMousePressTimeStamp(0),
+    mLastMouseX(0),
+    mLastMouseY(0),
+    mClickCount(1),
+    mLastMouseDragButton(0),
+    mWidgetWithMouseQueue(),
     mConfigListener(new GuiConfigListener(this)),
     mGuiFont(),
     mInfoParticleFont(),
@@ -262,6 +323,12 @@ Gui::~Gui()
     guiInput = nullptr;
 
     Theme::deleteInstance();
+
+    if (Widget::widgetExists(mTop))
+        setTop(nullptr);
+
+    delete mFocusHandler;
+    mFocusHandler = nullptr;
 }
 
 void Gui::logic()
@@ -527,7 +594,171 @@ void Gui::setUseCustomCursor(const bool customCursor)
 
 void Gui::handleMouseMoved(const MouseInput &mouseInput)
 {
-    gcn::Gui::handleMouseMoved(mouseInput);
+    // Check if the mouse leaves the application window.
+    if (!mWidgetWithMouseQueue.empty() && (mouseInput.getX() < 0
+        || mouseInput.getY() < 0 || !mTop->getDimension().isPointInRect(
+        mouseInput.getX(), mouseInput.getY())))
+    {
+        // Distribute an event to all widgets in the
+        // "widget with mouse" queue.
+        while (!mWidgetWithMouseQueue.empty())
+        {
+            Widget *const widget = mWidgetWithMouseQueue.front();
+
+            if (Widget::widgetExists(widget))
+            {
+                distributeMouseEvent(widget,
+                                     MouseEvent::EXITED,
+                                     mouseInput.getButton(),
+                                     mouseInput.getX(),
+                                     mouseInput.getY(),
+                                     true,
+                                     true);
+            }
+
+            mWidgetWithMouseQueue.pop_front();
+        }
+
+        mMouseInactivityTimer = 0;
+        return;
+    }
+
+    // Check if there is a need to send mouse exited events by
+    // traversing the "widget with mouse" queue.
+    bool widgetWithMouseQueueCheckDone = mWidgetWithMouseQueue.empty();
+    while (!widgetWithMouseQueueCheckDone)
+    {
+        unsigned int iterations = 0;
+        for (std::deque<Widget*>::iterator
+             iter = mWidgetWithMouseQueue.begin();
+             iter != mWidgetWithMouseQueue.end();
+             ++ iter)
+        {
+            Widget *const widget = *iter;
+
+            // If a widget in the "widget with mouse queue" doesn't
+            // exists anymore it should be removed from the queue.
+            if (!Widget::widgetExists(widget))
+            {
+                mWidgetWithMouseQueue.erase(iter);
+                break;
+            }
+            else
+            {
+                int x, y;
+                widget->getAbsolutePosition(x, y);
+
+                if (x > mouseInput.getX()
+                    || y > mouseInput.getY()
+                    || x + widget->getWidth() <= mouseInput.getX()
+                    || y + widget->getHeight() <= mouseInput.getY()
+                    || !widget->isVisible())
+                {
+                    distributeMouseEvent(widget,
+                                         MouseEvent::EXITED,
+                                         mouseInput.getButton(),
+                                         mouseInput.getX(),
+                                         mouseInput.getY(),
+                                         true,
+                                         true);
+                    mClickCount = 1;
+                    mLastMousePressTimeStamp = 0;
+                    mWidgetWithMouseQueue.erase(iter);
+                    break;
+                }
+            }
+
+            iterations++;
+        }
+
+        widgetWithMouseQueueCheckDone =
+            (iterations == mWidgetWithMouseQueue.size());
+    }
+
+    // Check all widgets below the mouse to see if they are
+    // present in the "widget with mouse" queue. If a widget
+    // is not then it should be added and an entered event should
+    // be sent to it.
+    Widget* parent = getMouseEventSource(
+        mouseInput.getX(), mouseInput.getY());
+    Widget* widget = parent;
+
+    // If a widget has modal mouse input focus then it will
+    // always be returned from getMouseEventSource, but we only wan't to
+    // send mouse entered events if the mouse has actually entered the
+    // widget with modal mouse input focus, hence we need to check if
+    // that's the case. If it's not we should simply ignore to send any
+    // mouse entered events.
+    if (mFocusHandler->getModalMouseInputFocused()
+        && widget == mFocusHandler->getModalMouseInputFocused()
+        && Widget::widgetExists(widget))
+    {
+        int x, y;
+        widget->getAbsolutePosition(x, y);
+
+        if (x > mouseInput.getX() || y > mouseInput.getY()
+            || x + widget->getWidth() <= mouseInput.getX()
+            || y + widget->getHeight() <= mouseInput.getY())
+        {
+            parent = nullptr;
+        }
+    }
+
+    while (parent)
+    {
+        parent = widget->getParent();
+
+        // Check if the widget is present in the "widget with mouse" queue.
+        bool widgetIsPresentInQueue = false;
+        FOR_EACH (std::deque<Widget*>::const_iterator,
+                  iter, mWidgetWithMouseQueue)
+        {
+            if (*iter == widget)
+            {
+                widgetIsPresentInQueue = true;
+                break;
+            }
+        }
+
+        // Widget is not present, send an entered event and add
+        // it to the "widget with mouse" queue.
+        if (!widgetIsPresentInQueue
+            && Widget::widgetExists(widget))
+        {
+            distributeMouseEvent(widget,
+                                 MouseEvent::ENTERED,
+                                 mouseInput.getButton(),
+                                 mouseInput.getX(),
+                                 mouseInput.getY(),
+                                 true,
+                                 true);
+            mWidgetWithMouseQueue.push_front(widget);
+        }
+
+        const Widget *const swap = widget;
+        widget = parent;
+        parent = swap->getParent();
+    }
+
+    if (mFocusHandler->getDraggedWidget())
+    {
+        distributeMouseEvent(mFocusHandler->getDraggedWidget(),
+                             MouseEvent::DRAGGED,
+                             mLastMouseDragButton,
+                             mouseInput.getX(),
+                             mouseInput.getY());
+    }
+    else
+    {
+        Widget *const sourceWidget = getMouseEventSource(
+            mouseInput.getX(), mouseInput.getY());
+
+        distributeMouseEvent(sourceWidget,
+                             MouseEvent::MOVED,
+                             mouseInput.getButton(),
+                             mouseInput.getX(),
+                             mouseInput.getY());
+    }
     mMouseInactivityTimer = 0;
 }
 
@@ -893,3 +1124,329 @@ uint32_t Gui::getMouseState(int *const x, int *const y)
     (*y) /= scale;
     return res;
 }
+
+void Gui::setTop(Widget *const top)
+{
+    if (mTop)
+        mTop->_setFocusHandler(nullptr);
+    if (top)
+        top->_setFocusHandler(mFocusHandler);
+
+    mTop = top;
+}
+
+void Gui::setGraphics(Graphics *const graphics)
+{
+    mGraphics = graphics;
+}
+
+Graphics* Gui::getGraphics() const
+{
+    return mGraphics;
+}
+
+void Gui::setInput(SDLInput *const input)
+{
+    mInput = input;
+}
+
+SDLInput* Gui::getInput() const
+{
+    return mInput;
+}
+
+void Gui::addGlobalKeyListener(KeyListener *const keyListener)
+{
+    mKeyListeners.push_back(keyListener);
+}
+
+void Gui::removeGlobalKeyListener(KeyListener *const keyListener)
+{
+    mKeyListeners.remove(keyListener);
+}
+
+void Gui::handleMouseWheelMovedDown(const MouseInput& mouseInput)
+{
+    Widget* sourceWidget = getMouseEventSource(
+        mouseInput.getX(), mouseInput.getY());
+
+    if (mFocusHandler->getDraggedWidget())
+        sourceWidget = mFocusHandler->getDraggedWidget();
+
+    int sourceWidgetX = 0;
+    int sourceWidgetY = 0;
+    sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
+
+    distributeMouseEvent(sourceWidget,
+                         MouseEvent::WHEEL_MOVED_DOWN,
+                         mouseInput.getButton(),
+                         mouseInput.getX(),
+                         mouseInput.getY());
+}
+
+void Gui::handleMouseWheelMovedUp(const MouseInput& mouseInput)
+{
+    Widget* sourceWidget = getMouseEventSource(
+        mouseInput.getX(), mouseInput.getY());
+
+    if (mFocusHandler->getDraggedWidget())
+        sourceWidget = mFocusHandler->getDraggedWidget();
+
+    int sourceWidgetX, sourceWidgetY;
+    sourceWidget->getAbsolutePosition(sourceWidgetX, sourceWidgetY);
+
+    distributeMouseEvent(sourceWidget,
+                         MouseEvent::WHEEL_MOVED_UP,
+                         mouseInput.getButton(),
+                         mouseInput.getX(),
+                         mouseInput.getY());
+}
+
+Widget* Gui::getWidgetAt(int x, int y)
+{
+    // If the widget's parent has no child then we have found the widget..
+    Widget* parent = mTop;
+    Widget* child = mTop;
+
+    while (child)
+    {
+        Widget *const swap = child;
+        int parentX, parentY;
+        parent->getAbsolutePosition(parentX, parentY);
+        child = parent->getWidgetAt(x - parentX, y - parentY);
+        parent = swap;
+    }
+
+    return parent;
+}
+
+Widget* Gui::getMouseEventSource(int x, int y)
+{
+    Widget *const widget = getWidgetAt(x, y);
+    if (!widget)
+        return nullptr;
+
+    if (mFocusHandler && mFocusHandler->getModalMouseInputFocused()
+        && !widget->isModalMouseInputFocused())
+    {
+        return mFocusHandler->getModalMouseInputFocused();
+    }
+
+    return widget;
+}
+
+Widget* Gui::getKeyEventSource()
+{
+    Widget* widget = mFocusHandler->getFocused();
+
+    while (widget && widget->_getInternalFocusHandler()
+           && widget->_getInternalFocusHandler()->getFocused())
+    {
+        widget = widget->_getInternalFocusHandler()->getFocused();
+    }
+
+    return widget;
+}
+
+void Gui::distributeKeyEvent(KeyEvent& keyEvent)
+{
+    Widget* parent = keyEvent.getSource();
+    Widget* widget = keyEvent.getSource();
+
+    if (mFocusHandler->getModalFocused()
+        && !widget->isModalFocused())
+    {
+        return;
+    }
+
+    if (mFocusHandler->getModalMouseInputFocused()
+        && !widget->isModalMouseInputFocused())
+    {
+        return;
+    }
+
+    while (parent)
+    {
+        // If the widget has been removed due to input
+        // cancel the distribution.
+        if (!Widget::widgetExists(widget))
+            break;
+
+        parent = widget->getParent();
+
+        if (widget->isEnabled())
+        {
+            std::list<KeyListener*> keyListeners
+                = widget->_getKeyListeners();
+
+            // Send the event to all key listeners of the source widget.
+            for (std::list<KeyListener*>::const_iterator
+                 it = keyListeners.begin();
+                 it != keyListeners.end();
+                 ++ it)
+            {
+                switch (keyEvent.getType())
+                {
+                    case KeyEvent::PRESSED:
+                        (*it)->keyPressed(keyEvent);
+                        break;
+                    case KeyEvent::RELEASED:
+                        (*it)->keyReleased(keyEvent);
+                        break;
+                    default:
+                        break;
+                }
+            }
+        }
+
+        const Widget *const swap = widget;
+        widget = parent;
+        parent = swap->getParent();
+
+        // If a non modal focused widget has been reach
+        // and we have modal focus cancel the distribution.
+        if (mFocusHandler->getModalFocused()
+            && !widget->isModalFocused())
+        {
+            break;
+        }
+    }
+}
+
+void Gui::distributeKeyEventToGlobalKeyListeners(KeyEvent& keyEvent)
+{
+    for (KeyListenerListIterator it = mKeyListeners.begin();
+         it != mKeyListeners.end(); ++ it)
+    {
+        switch (keyEvent.getType())
+        {
+            case KeyEvent::PRESSED:
+                (*it)->keyPressed(keyEvent);
+                break;
+            case KeyEvent::RELEASED:
+                (*it)->keyReleased(keyEvent);
+                break;
+            default:
+                break;
+        }
+
+        if (keyEvent.isConsumed())
+            break;
+    }
+}
+
+void Gui::handleModalMouseInputFocus()
+{
+    BLOCK_START("Gui::handleModalMouseInputFocus")
+    // Check if modal mouse input focus has been gained by a widget.
+    if ((mFocusHandler->getLastWidgetWithModalMouseInputFocus()
+        != mFocusHandler->getModalMouseInputFocused())
+        && (!mFocusHandler->getLastWidgetWithModalMouseInputFocus()))
+    {
+        handleModalFocusGained();
+        mFocusHandler->setLastWidgetWithModalMouseInputFocus(
+            mFocusHandler->getModalMouseInputFocused());
+    }
+    // Check if modal mouse input focus has been released.
+    else if ((mFocusHandler->getLastWidgetWithModalMouseInputFocus()
+              != mFocusHandler->getModalMouseInputFocused())
+              && (mFocusHandler->getLastWidgetWithModalMouseInputFocus()))
+    {
+        handleModalFocusReleased();
+        mFocusHandler->setLastWidgetWithModalMouseInputFocus(nullptr);
+    }
+    BLOCK_END("Gui::handleModalMouseInputFocus")
+}
+
+void Gui::handleModalFocus()
+{
+    BLOCK_START("Gui::handleModalFocus")
+    // Check if modal focus has been gained by a widget.
+    if ((mFocusHandler->getLastWidgetWithModalFocus()
+        != mFocusHandler->getModalFocused())
+        && (!mFocusHandler->getLastWidgetWithModalFocus()))
+    {
+        handleModalFocusGained();
+        mFocusHandler->setLastWidgetWithModalFocus(
+            mFocusHandler->getModalFocused());
+    }
+    // Check if modal focus has been released.
+    else if ((mFocusHandler->getLastWidgetWithModalFocus()
+              != mFocusHandler->getModalFocused())
+              && (mFocusHandler->getLastWidgetWithModalFocus()))
+    {
+        handleModalFocusReleased();
+        mFocusHandler->setLastWidgetWithModalFocus(nullptr);
+    }
+    BLOCK_END("Gui::handleModalFocus")
+}
+
+void Gui::handleModalFocusGained()
+{
+    // Distribute an event to all widgets in the "widget with mouse" queue.
+    while (!mWidgetWithMouseQueue.empty())
+    {
+        Widget *const widget = mWidgetWithMouseQueue.front();
+
+        if (Widget::widgetExists(widget))
+        {
+            distributeMouseEvent(widget,
+                                 MouseEvent::EXITED,
+                                 mLastMousePressButton,
+                                 mLastMouseX,
+                                 mLastMouseY,
+                                 true,
+                                 true);
+        }
+
+        mWidgetWithMouseQueue.pop_front();
+    }
+
+    mFocusHandler->setLastWidgetWithModalMouseInputFocus(
+        mFocusHandler->getModalMouseInputFocused());
+}
+
+void Gui::handleModalFocusReleased()
+{
+      // Check all widgets below the mouse to see if they are
+    // present in the "widget with mouse" queue. If a widget
+    // is not then it should be added and an entered event should
+    // be sent to it.
+    Widget* widget = getMouseEventSource(mLastMouseX, mLastMouseY);
+    Widget* parent = widget;
+
+    while (parent)
+    {
+        parent = widget->getParent();
+
+        // Check if the widget is present in the "widget with mouse" queue.
+        bool widgetIsPresentInQueue = false;
+        FOR_EACH (std::deque<Widget*>::const_iterator,
+                  iter, mWidgetWithMouseQueue)
+        {
+            if (*iter == widget)
+            {
+                widgetIsPresentInQueue = true;
+                break;
+            }
+        }
+
+        // Widget is not present, send an entered event and add
+        // it to the "widget with mouse" queue.
+        if (!widgetIsPresentInQueue && Widget::widgetExists(widget))
+        {
+            distributeMouseEvent(widget,
+                                 MouseEvent::ENTERED,
+                                 mLastMousePressButton,
+                                 mLastMouseX,
+                                 mLastMouseY,
+                                 false,
+                                 true);
+            mWidgetWithMouseQueue.push_front(widget);
+        }
+
+        const Widget *const swap = widget;
+        widget = parent;
+        parent = swap->getParent();
+    }
+}
diff --git a/src/gui/gui.h b/src/gui/gui.h
index 4038bbec4..ba1fa2e6b 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -20,23 +20,72 @@
  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
+ *
+ *
+ * Per Larsson a.k.a finalman
+ * Olof Naessén a.k.a jansem/yakslem
+ *
+ * Visit: http://guichan.sourceforge.net
+ *
+ * License: (BSD)
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name of Guichan nor the names of its contributors may
+ *    be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+ * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #ifndef GUI_GUI_H
 #define GUI_GUI_H
 
 #include "gui/color.h"
 
-#include "gui/base/gui.hpp"
+#include <deque>
+#include <list>
 
 #include "localconsts.h"
 
+class Event;
+class FocusHandler;
 class FocusListener;
 class Graphics;
 class GuiConfigListener;
 class ImageSet;
+class KeyEvent;
+class KeyListener;
 class MouseEvent;
 class MouseInput;
 class Font;
 class SDLInput;
+class Widget;
 class Window;
 
 /**
@@ -52,7 +101,7 @@ class Window;
  *
  * \ingroup GUI
  */
-class Gui final : public gcn::Gui
+class Gui final
 {
     public:
         /**
@@ -168,6 +217,91 @@ class Gui final : public gcn::Gui
 
         static uint32_t getMouseState(int *const x, int *const y);
 
+        /**
+         * Sets the top widget. The top widget is the root widget
+         * of the GUI. If you want a GUI to be able to contain more
+         * than one widget the top widget should be a container.
+         *
+         * @param top The top widget.
+         * @see Container
+         * @since 0.1.0
+         */
+        void setTop(Widget *const top);
+
+        /**
+         * Gets the top widget. The top widget is the root widget
+         * of the GUI.
+         *
+         * @return The top widget. NULL if no top widget has been set.
+         * @since 0.1.0
+         */
+        Widget* getTop() const A_WARN_UNUSED
+        { return mTop; }
+
+        /**
+         * Sets the graphics object to use for drawing.
+         *
+         * @param graphics The graphics object to use for drawing.
+         * @see getGraphics, AllegroGraphics, HGEGraphics, 
+         *      OpenLayerGraphics, OpenGLGraphics, SDLGraphics
+         * @since 0.1.0
+         */
+        void setGraphics(Graphics *const graphics);
+
+        /**
+         * Gets the graphics object used for drawing.
+         *
+         *  @return The graphics object used for drawing. NULL if no
+         *          graphics object has been set.
+         * @see setGraphics, AllegroGraphics, HGEGraphics, 
+         *      OpenLayerGraphics, OpenGLGraphics, SDLGraphics
+         * @since 0.1.0
+         */
+        Graphics* getGraphics() const A_WARN_UNUSED;
+
+        /**
+         * Sets the input object to use for input handling.
+         *
+         * @param input The input object to use for input handling.
+         * @see getInput, AllegroInput, HGEInput, OpenLayerInput,
+         *      SDLInput
+         * @since 0.1.0
+         */
+        void setInput(SDLInput *const input);
+
+        /**
+         * Gets the input object being used for input handling.
+         *
+         *  @return The input object used for handling input. NULL if no
+         *          input object has been set.
+         * @see setInput, AllegroInput, HGEInput, OpenLayerInput,
+         *      SDLInput
+         * @since 0.1.0
+         */
+        SDLInput* getInput() const A_WARN_UNUSED;
+
+        /**
+         * Adds a global key listener to the Gui. A global key listener
+         * will receive all key events generated from the GUI and global
+         * key listeners will receive the events before key listeners
+         * of widgets.
+         *
+         * @param keyListener The key listener to add.
+         * @see removeGlobalKeyListener
+         * @since 0.5.0
+         */
+        void addGlobalKeyListener(KeyListener *const keyListener);
+
+        /**
+         * Removes global key listener from the Gui.
+         *
+         * @param keyListener The key listener to remove.
+         * @throws Exception if the key listener hasn't been added.
+         * @see addGlobalKeyListener
+         * @since 0.5.0
+         */
+        void removeGlobalKeyListener(KeyListener *const keyListener);
+
     protected:
         void handleMouseMoved(const MouseInput &mouseInput);
 
@@ -181,7 +315,200 @@ class Gui final : public gcn::Gui
                                   int x, int y, bool force = false,
                                   bool toSourceOnly = false);
 
+        /**
+         *
+         * Handles mouse wheel moved down input.
+         *
+         * @param mouseInput The mouse input to handle.
+         * @since 0.6.0
+         */
+        void handleMouseWheelMovedDown(const MouseInput& mouseInput);
+
+        /**
+         * Handles mouse wheel moved up input.
+         *
+         * @param mouseInput The mouse input to handle.
+         * @since 0.6.0
+         */
+        void handleMouseWheelMovedUp(const MouseInput& mouseInput);
+
+        /**
+         * Gets the widget at a certain position.
+         *
+         * @return The widget at a certain position.
+         * @since 0.6.0
+         */
+        Widget* getWidgetAt(int x, int y) A_WARN_UNUSED;
+
+        /**
+         * Gets the source of the mouse event.
+         *
+         * @return The source widget of the mouse event.
+         * @since 0.6.0
+         */
+        Widget* getMouseEventSource(int x, int y) A_WARN_UNUSED;
+
+        /**
+         * Gets the source of the key event.
+         *
+         * @return The source widget of the key event.
+         * @since 0.6.0
+         */
+        Widget* getKeyEventSource() A_WARN_UNUSED;
+
+        /**
+         * Distributes a key event.
+         *
+         * @param keyEvent The key event to distribute.
+
+         * @since 0.6.0
+         */
+        void distributeKeyEvent(KeyEvent& keyEvent);
+
+        /**
+         * Distributes a key event to the global key listeners.
+         *
+         * @param keyEvent The key event to distribute.
+         *
+         * @since 0.6.0
+         */
+        void distributeKeyEventToGlobalKeyListeners(KeyEvent& keyEvent);
+
+        /**
+         * Handles modal mouse input focus. Modal mouse input focus needs 
+         * to be checked at each logic iteration as it might be necessary to 
+         * distribute mouse entered or mouse exited events.
+         *
+         * @since 0.8.0
+         */
+        void handleModalMouseInputFocus();
+
+        /**
+         * Handles modal focus. Modal focus needs to be checked at 
+         * each logic iteration as it might be necessary to distribute
+         * mouse entered or mouse exited events.
+         *
+         * @since 0.8.0
+         */
+        void handleModalFocus();
+
+        /**
+         * Handles modal focus gained. If modal focus has been gained it might
+         * be necessary to distribute mouse entered or mouse exited events.
+         *
+         * @since 0.8.0
+         */
+        void handleModalFocusGained();
+
+        /**
+         * Handles modal mouse input focus gained. If modal focus has been
+         * gained it might be necessary to distribute mouse entered or mouse
+         * exited events.
+         *
+         * @since 0.8.0
+         */
+        void handleModalFocusReleased();
+
     private:
+        /**
+         * Holds the top widget.
+         */
+        Widget* mTop;
+
+        /**
+         * Holds the graphics implementation used.
+         */
+        Graphics* mGraphics;
+
+        /**
+         * Holds the input implementation used.
+         */
+        SDLInput* mInput;
+
+        /**
+         * Holds the focus handler for the Gui.
+         */
+        FocusHandler* mFocusHandler;
+
+        /**
+         * True if tabbing is enabled, false otherwise.
+         */
+        bool mTabbing;
+
+        /**
+         * Typedef.
+         */
+        typedef std::list<KeyListener*> KeyListenerList;
+
+        /**
+         * Typedef.
+         */
+        typedef KeyListenerList::iterator KeyListenerListIterator;
+
+        /**
+         * Holds the global key listeners of the Gui.
+         */
+        KeyListenerList mKeyListeners;
+
+        /**
+         * True if shift is pressed, false otherwise.
+         */
+        bool mShiftPressed;
+
+        /**
+         * True if meta is pressed, false otherwise.
+         */
+        bool mMetaPressed;
+
+        /**
+         * True if control is pressed, false otherwise.
+         */
+        bool mControlPressed;
+
+        /**
+         * True if alt is pressed, false otherwise.
+         */
+        bool mAltPressed;
+
+        /**
+         * Holds the last mouse button pressed.
+         */
+        unsigned int mLastMousePressButton;
+
+        /**
+         * Holds the last mouse press time stamp.
+         */
+        int mLastMousePressTimeStamp;
+
+        /**
+         * Holds the last mouse x coordinate.
+         */
+        int mLastMouseX;
+
+        /**
+         * Holds the last mouse y coordinate.
+         */
+        int mLastMouseY;
+
+        /**
+         * Holds the current click count. Used to keep track
+         * of clicks for a the last pressed button.
+         */
+        int mClickCount;
+
+        /**
+         * Holds the last button used when a drag of a widget
+         * was initiated. Used to be able to release a drag
+         * when the same button is released.
+         */
+        int mLastMouseDragButton;
+
+        /**
+         * Holds a stack with all the widgets with the mouse.
+         * Used to properly distribute mouse events.
+         */
+        std::deque<Widget*> mWidgetWithMouseQueue;
+
         GuiConfigListener *mConfigListener;
         Font *mGuiFont;                  /**< The global GUI font */
         Font *mInfoParticleFont;         /**< Font for Info Particles */