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authorAndrei Karas <akaras@inbox.ru>2014-02-15 18:07:17 +0300
committerAndrei Karas <akaras@inbox.ru>2014-02-15 18:38:03 +0300
commitcde42202d69e178da73c698065deca54b24054fd (patch)
treed636965ecde85db8de36fa65735920826e8e191b /src/gui/base/gui.cpp
parent21e63bbf54679ec236d1f09ed435959ff6a04db2 (diff)
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diff --git a/src/gui/base/gui.cpp b/src/gui/base/gui.cpp
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+/*
+ * 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/base/basiccontainer.hpp"
+#include "gui/base/exception.hpp"
+#include "gui/base/focushandler.hpp"
+#include "gui/base/graphics.hpp"
+#include "gui/base/input.hpp"
+#include "gui/base/keyinput.hpp"
+#include "gui/base/keylistener.hpp"
+#include "gui/base/mouseinput.hpp"
+#include "gui/base/mouselistener.hpp"
+#include "gui/base/widget.hpp"
+
+#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(Input* input)
+ {
+ mInput = input;
+ }
+
+ Input* 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:
+ throw GCN_EXCEPTION("Unknown mouse event type.");
+ }
+ }
+
+ 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:
+ throw GCN_EXCEPTION("Unknown key event type.");
+ }
+ }
+ }
+
+ 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:
+ throw GCN_EXCEPTION("Unknown key event type.");
+ }
+
+ 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