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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/focushandler.cpp
parent21e63bbf54679ec236d1f09ed435959ff6a04db2 (diff)
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move exguichan files into gui/base/
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diff --git a/src/gui/base/focushandler.cpp b/src/gui/base/focushandler.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/focushandler.hpp"
+
+#include "gui/base/focuslistener.hpp"
+#include "gui/base/exception.hpp"
+#include "gui/base/widget.hpp"
+
+#include "debug.h"
+
+namespace gcn
+{
+ FocusHandler::FocusHandler() :
+ mWidgets(),
+ mFocusedWidget(nullptr),
+ mModalFocusedWidget(nullptr),
+ mModalMouseInputFocusedWidget(nullptr),
+ mDraggedWidget(nullptr),
+ mLastWidgetWithMouse(nullptr),
+ mLastWidgetWithModalFocus(nullptr),
+ mLastWidgetWithModalMouseInputFocus(nullptr),
+ mLastWidgetPressed(nullptr)
+ {
+ }
+
+ void FocusHandler::requestFocus(Widget* widget)
+ {
+ if (!widget || widget == mFocusedWidget)
+ return;
+
+ int toBeFocusedIndex = -1;
+ for (unsigned int i = 0, sz = static_cast<unsigned int>(
+ mWidgets.size()); i < sz; ++i)
+ {
+ if (mWidgets[i] == widget)
+ {
+ toBeFocusedIndex = i;
+ break;
+ }
+ }
+
+ if (toBeFocusedIndex < 0)
+ throw GCN_EXCEPTION("Trying to focus a none existing widget.");
+
+ Widget *const oldFocused = mFocusedWidget;
+
+ if (oldFocused != widget)
+ {
+ mFocusedWidget = mWidgets.at(toBeFocusedIndex);
+
+ if (oldFocused)
+ {
+ Event focusEvent(oldFocused);
+ distributeFocusLostEvent(focusEvent);
+ }
+
+ Event focusEvent(mWidgets.at(toBeFocusedIndex));
+ distributeFocusGainedEvent(focusEvent);
+ }
+ }
+
+ void FocusHandler::requestModalFocus(Widget* widget)
+ {
+ if (mModalFocusedWidget && mModalFocusedWidget != widget)
+ throw GCN_EXCEPTION("Another widget already has modal focus.");
+
+ mModalFocusedWidget = widget;
+
+ if (mFocusedWidget && !mFocusedWidget->isModalFocused())
+ focusNone();
+ }
+
+ void FocusHandler::requestModalMouseInputFocus(Widget* widget)
+ {
+ if (mModalMouseInputFocusedWidget
+ && mModalMouseInputFocusedWidget != widget)
+ {
+ throw GCN_EXCEPTION("Another widget already has "
+ "modal input focus.");
+ }
+
+ mModalMouseInputFocusedWidget = widget;
+ }
+
+ void FocusHandler::releaseModalFocus(Widget* widget)
+ {
+ if (mModalFocusedWidget == widget)
+ mModalFocusedWidget = nullptr;
+ }
+
+ void FocusHandler::releaseModalMouseInputFocus(Widget* widget)
+ {
+ if (mModalMouseInputFocusedWidget == widget)
+ mModalMouseInputFocusedWidget = nullptr;
+ }
+
+ Widget* FocusHandler::getFocused() const
+ {
+ return mFocusedWidget;
+ }
+
+ Widget* FocusHandler::getModalFocused() const
+ {
+ return mModalFocusedWidget;
+ }
+
+ Widget* FocusHandler::getModalMouseInputFocused() const
+ {
+ return mModalMouseInputFocusedWidget;
+ }
+
+ void FocusHandler::focusNext()
+ {
+ int i;
+ int focusedWidget = -1;
+ const int sz = static_cast<int>(mWidgets.size());
+ for (i = 0; i < sz; ++i)
+ {
+ if (mWidgets[i] == mFocusedWidget)
+ focusedWidget = i;
+ }
+ const int focused = focusedWidget;
+
+ // i is a counter that ensures that the following loop
+ // won't get stuck in an infinite loop
+ i = sz;
+ do
+ {
+ ++ focusedWidget;
+
+ if (i == 0)
+ {
+ focusedWidget = -1;
+ break;
+ }
+
+ -- i;
+
+ if (focusedWidget >= sz)
+ focusedWidget = 0;
+
+ if (focusedWidget == focused)
+ return;
+ }
+ while (!mWidgets.at(focusedWidget)->isFocusable());
+
+ if (focusedWidget >= 0)
+ {
+ mFocusedWidget = mWidgets.at(focusedWidget);
+
+ Event focusEvent(mFocusedWidget);
+ distributeFocusGainedEvent(focusEvent);
+ }
+
+ if (focused >= 0)
+ {
+ Event focusEvent(mWidgets.at(focused));
+ distributeFocusLostEvent(focusEvent);
+ }
+ }
+
+ void FocusHandler::focusPrevious()
+ {
+ if (mWidgets.empty())
+ {
+ mFocusedWidget = nullptr;
+ return;
+ }
+
+ int i;
+ int focusedWidget = -1;
+ const int sz = static_cast<int>(mWidgets.size());
+ for (i = 0; i < sz; ++ i)
+ {
+ if (mWidgets[i] == mFocusedWidget)
+ focusedWidget = i;
+ }
+ const int focused = focusedWidget;
+
+ // i is a counter that ensures that the following loop
+ // won't get stuck in an infinite loop
+ i = sz;
+ do
+ {
+ -- focusedWidget;
+
+ if (i == 0)
+ {
+ focusedWidget = -1;
+ break;
+ }
+
+ -- i;
+
+ if (focusedWidget <= 0)
+ focusedWidget = sz - 1;
+
+ if (focusedWidget == focused)
+ return;
+ }
+ while (!mWidgets.at(focusedWidget)->isFocusable());
+
+ if (focusedWidget >= 0)
+ {
+ mFocusedWidget = mWidgets.at(focusedWidget);
+ Event focusEvent(mFocusedWidget);
+ distributeFocusGainedEvent(focusEvent);
+ }
+
+ if (focused >= 0)
+ {
+ Event focusEvent(mWidgets.at(focused));
+ distributeFocusLostEvent(focusEvent);
+ }
+ }
+
+ bool FocusHandler::isFocused(const Widget* widget) const
+ {
+ return mFocusedWidget == widget;
+ }
+
+ void FocusHandler::add(Widget* widget)
+ {
+ mWidgets.push_back(widget);
+ }
+
+ void FocusHandler::remove(Widget* widget)
+ {
+ if (isFocused(widget))
+ mFocusedWidget = nullptr;
+
+ for (WidgetIterator iter = mWidgets.begin();
+ iter != mWidgets.end(); ++iter)
+ {
+ if ((*iter) == widget)
+ {
+ mWidgets.erase(iter);
+ break;
+ }
+ }
+
+ if (mDraggedWidget == widget)
+ {
+ mDraggedWidget = nullptr;
+ return;
+ }
+
+ if (mLastWidgetWithMouse == widget)
+ {
+ mLastWidgetWithMouse = nullptr;
+ return;
+ }
+
+ if (mLastWidgetWithModalFocus == widget)
+ {
+ mLastWidgetWithModalFocus = nullptr;
+ return;
+ }
+
+ if (mLastWidgetWithModalMouseInputFocus == widget)
+ {
+ mLastWidgetWithModalMouseInputFocus = nullptr;
+ return;
+ }
+
+ if (mLastWidgetPressed == widget)
+ {
+ mLastWidgetPressed = nullptr;
+ return;
+ }
+ }
+
+ void FocusHandler::focusNone()
+ {
+ if (mFocusedWidget)
+ {
+ Widget *const focused = mFocusedWidget;
+ mFocusedWidget = nullptr;
+
+ Event focusEvent(focused);
+ distributeFocusLostEvent(focusEvent);
+ }
+ }
+
+ void FocusHandler::tabNext()
+ {
+ if (mFocusedWidget)
+ {
+ if (!mFocusedWidget->isTabOutEnabled())
+ return;
+ }
+
+ if (mWidgets.empty())
+ {
+ mFocusedWidget = nullptr;
+ return;
+ }
+
+ int i;
+ int focusedWidget = -1;
+ const int sz = static_cast<int>(mWidgets.size());
+ for (i = 0; i < sz; ++ i)
+ {
+ if (mWidgets[i] == mFocusedWidget)
+ focusedWidget = i;
+ }
+ const int focused = focusedWidget;
+ bool done = false;
+
+ // i is a counter that ensures that the following loop
+ // won't get stuck in an infinite loop
+ i = sz;
+ do
+ {
+ ++ focusedWidget;
+
+ if (i == 0)
+ {
+ focusedWidget = -1;
+ break;
+ }
+
+ -- i;
+
+ if (focusedWidget >= sz)
+ focusedWidget = 0;
+
+ if (focusedWidget == focused)
+ return;
+
+ const Widget *const widget = mWidgets.at(focusedWidget);
+ if (widget->isFocusable() && widget->isTabInEnabled() &&
+ (!mModalFocusedWidget || widget->isModalFocused()))
+ {
+ done = true;
+ }
+ }
+ while (!done);
+
+ if (focusedWidget >= 0)
+ {
+ mFocusedWidget = mWidgets.at(focusedWidget);
+ Event focusEvent(mFocusedWidget);
+ distributeFocusGainedEvent(focusEvent);
+ }
+
+ if (focused >= 0)
+ {
+ Event focusEvent(mWidgets.at(focused));
+ distributeFocusLostEvent(focusEvent);
+ }
+ }
+
+ void FocusHandler::tabPrevious()
+ {
+ if (mFocusedWidget)
+ {
+ if (!mFocusedWidget->isTabOutEnabled())
+ return;
+ }
+
+ if (mWidgets.empty())
+ {
+ mFocusedWidget = nullptr;
+ return;
+ }
+
+ int i;
+ int focusedWidget = -1;
+ const int sz = static_cast<int>(mWidgets.size());
+ for (i = 0; i < sz; ++ i)
+ {
+ if (mWidgets[i] == mFocusedWidget)
+ focusedWidget = i;
+ }
+ const int focused = focusedWidget;
+ bool done = false;
+
+ // i is a counter that ensures that the following loop
+ // won't get stuck in an infinite loop
+ i = sz;
+ do
+ {
+ -- focusedWidget;
+
+ if (i == 0)
+ {
+ focusedWidget = -1;
+ break;
+ }
+
+ -- i;
+
+ if (focusedWidget <= 0)
+ focusedWidget = sz - 1;
+
+ if (focusedWidget == focused)
+ return;
+
+ const Widget *const widget = mWidgets.at(focusedWidget);
+ if (widget->isFocusable() && widget->isTabInEnabled() &&
+ (!mModalFocusedWidget || widget->isModalFocused()))
+ {
+ done = true;
+ }
+ }
+ while (!done);
+
+ if (focusedWidget >= 0)
+ {
+ mFocusedWidget = mWidgets.at(focusedWidget);
+ Event focusEvent(mFocusedWidget);
+ distributeFocusGainedEvent(focusEvent);
+ }
+
+ if (focused >= 0)
+ {
+ Event focusEvent(mWidgets.at(focused));
+ distributeFocusLostEvent(focusEvent);
+ }
+ }
+
+ void FocusHandler::distributeFocusLostEvent(const Event& focusEvent)
+ {
+ Widget *const sourceWidget = focusEvent.getSource();
+
+ std::list<FocusListener*> focusListeners
+ = sourceWidget->_getFocusListeners();
+
+ // Send the event to all focus listeners of the widget.
+ for (std::list<FocusListener*>::const_iterator
+ it = focusListeners.begin();
+ it != focusListeners.end();
+ ++ it)
+ {
+ (*it)->focusLost(focusEvent);
+ }
+ }
+
+ void FocusHandler::distributeFocusGainedEvent(const Event& focusEvent)
+ {
+ Widget *const sourceWidget = focusEvent.getSource();
+
+ std::list<FocusListener*> focusListeners
+ = sourceWidget->_getFocusListeners();
+
+ // Send the event to all focus listeners of the widget.
+ for (std::list<FocusListener*>::const_iterator
+ it = focusListeners.begin();
+ it != focusListeners.end();
+ ++ it)
+ {
+ (*it)->focusGained(focusEvent);
+ }
+ }
+
+ Widget* FocusHandler::getDraggedWidget()
+ {
+ return mDraggedWidget;
+ }
+
+ void FocusHandler::setDraggedWidget(Widget* draggedWidget)
+ {
+ mDraggedWidget = draggedWidget;
+ }
+
+ Widget* FocusHandler::getLastWidgetWithMouse()
+ {
+ return mLastWidgetWithMouse;
+ }
+
+ void FocusHandler::setLastWidgetWithMouse(Widget* lastWidgetWithMouse)
+ {
+ mLastWidgetWithMouse = lastWidgetWithMouse;
+ }
+
+ Widget* FocusHandler::getLastWidgetWithModalFocus()
+ {
+ return mLastWidgetWithModalFocus;
+ }
+
+ void FocusHandler::setLastWidgetWithModalFocus(Widget* widget)
+ {
+ mLastWidgetWithModalFocus = widget;
+ }
+
+ Widget* FocusHandler::getLastWidgetWithModalMouseInputFocus()
+ {
+ return mLastWidgetWithModalMouseInputFocus;
+ }
+
+ void FocusHandler::setLastWidgetWithModalMouseInputFocus(Widget* widget)
+ {
+ mLastWidgetWithModalMouseInputFocus = widget;
+ }
+
+ Widget* FocusHandler::getLastWidgetPressed()
+ {
+ return mLastWidgetPressed;
+ }
+
+ void FocusHandler::setLastWidgetPressed(Widget* lastWidgetPressed)
+ {
+ mLastWidgetPressed = lastWidgetPressed;
+ }
+} // namespace gcn