mirror of
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588 lines
15 KiB
C++
588 lines
15 KiB
C++
/* _______ __ __ __ ______ __ __ _______ __ __
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* / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
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* / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
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* / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
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* / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
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* /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
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* \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
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*
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* Copyright (c) 2004 - 2008 Olof Naessén and Per Larsson
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*
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*
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* Per Larsson a.k.a finalman
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* Olof Naessén a.k.a jansem/yakslem
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*
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* Visit: http://guichan.sourceforge.net
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*
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* License: (BSD)
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of Guichan nor the names of its contributors may
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* be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* For comments regarding functions please see the header file.
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*/
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#include "guichan/focushandler.hpp"
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#include "guichan/focuslistener.hpp"
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#include "guichan/exception.hpp"
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#include "guichan/widget.hpp"
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namespace gcn
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{
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FocusHandler::FocusHandler()
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:mFocusedWidget(NULL),
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mModalFocusedWidget(NULL),
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mModalMouseInputFocusedWidget(NULL),
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mDraggedWidget(NULL),
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mLastWidgetWithMouse(NULL),
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mLastWidgetWithModalFocus(NULL),
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mLastWidgetWithModalMouseInputFocus(NULL),
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mLastWidgetPressed(NULL)
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{
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}
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void FocusHandler::requestFocus(Widget* widget)
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{
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if (widget == NULL
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|| widget == mFocusedWidget)
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{
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return;
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}
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unsigned int i = 0;
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int toBeFocusedIndex = -1;
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for (i = 0; i < mWidgets.size(); ++i)
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{
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if (mWidgets[i] == widget)
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{
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toBeFocusedIndex = i;
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break;
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}
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}
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if (toBeFocusedIndex < 0)
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{
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throw GCN_EXCEPTION("Trying to focus a none existing widget.");
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}
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Widget *oldFocused = mFocusedWidget;
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if (oldFocused != widget)
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{
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mFocusedWidget = mWidgets.at(toBeFocusedIndex);
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if (oldFocused != NULL)
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{
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Event focusEvent(oldFocused);
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distributeFocusLostEvent(focusEvent);
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}
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Event focusEvent(mWidgets.at(toBeFocusedIndex));
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distributeFocusGainedEvent(focusEvent);
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}
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}
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void FocusHandler::requestModalFocus(Widget* widget)
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{
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if (mModalFocusedWidget != NULL && mModalFocusedWidget != widget)
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{
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throw GCN_EXCEPTION("Another widget already has modal focus.");
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}
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mModalFocusedWidget = widget;
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if (mFocusedWidget != NULL
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&& !mFocusedWidget->isModalFocused())
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{
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focusNone();
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}
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}
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void FocusHandler::requestModalMouseInputFocus(Widget* widget)
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{
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if (mModalMouseInputFocusedWidget != NULL
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&& mModalMouseInputFocusedWidget != widget)
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{
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throw GCN_EXCEPTION("Another widget already has modal input focus.");
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}
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mModalMouseInputFocusedWidget = widget;
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}
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void FocusHandler::releaseModalFocus(Widget* widget)
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{
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if (mModalFocusedWidget == widget)
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{
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mModalFocusedWidget = NULL;
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}
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}
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void FocusHandler::releaseModalMouseInputFocus(Widget* widget)
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{
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if (mModalMouseInputFocusedWidget == widget)
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{
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mModalMouseInputFocusedWidget = NULL;
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}
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}
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Widget* FocusHandler::getFocused() const
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{
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return mFocusedWidget;
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}
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Widget* FocusHandler::getModalFocused() const
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{
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return mModalFocusedWidget;
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}
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Widget* FocusHandler::getModalMouseInputFocused() const
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{
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return mModalMouseInputFocusedWidget;
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}
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void FocusHandler::focusNext()
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{
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int i;
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int focusedWidget = -1;
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for (i = 0; i < (int)mWidgets.size(); ++i)
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{
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if (mWidgets[i] == mFocusedWidget)
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{
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focusedWidget = i;
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}
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}
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int focused = focusedWidget;
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// i is a counter that ensures that the following loop
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// won't get stuck in an infinite loop
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i = (int)mWidgets.size();
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do
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{
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++focusedWidget;
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if (i==0)
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{
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focusedWidget = -1;
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break;
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}
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--i;
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if (focusedWidget >= (int)mWidgets.size())
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{
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focusedWidget = 0;
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}
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if (focusedWidget == focused)
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{
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return;
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}
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}
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while (!mWidgets.at(focusedWidget)->isFocusable());
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if (focusedWidget >= 0)
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{
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mFocusedWidget = mWidgets.at(focusedWidget);
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Event focusEvent(mFocusedWidget);
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distributeFocusGainedEvent(focusEvent);
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}
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if (focused >= 0)
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{
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Event focusEvent(mWidgets.at(focused));
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distributeFocusLostEvent(focusEvent);
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}
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}
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void FocusHandler::focusPrevious()
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{
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if (mWidgets.size() == 0)
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{
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mFocusedWidget = NULL;
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return;
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}
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int i;
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int focusedWidget = -1;
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for (i = 0; i < (int)mWidgets.size(); ++i)
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{
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if (mWidgets[i] == mFocusedWidget)
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{
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focusedWidget = i;
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}
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}
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int focused = focusedWidget;
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// i is a counter that ensures that the following loop
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// won't get stuck in an infinite loop
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i = (int)mWidgets.size();
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do
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{
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--focusedWidget;
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if (i==0)
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{
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focusedWidget = -1;
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break;
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}
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--i;
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if (focusedWidget <= 0)
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{
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focusedWidget = mWidgets.size() - 1;
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}
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if (focusedWidget == focused)
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{
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return;
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}
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}
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while (!mWidgets.at(focusedWidget)->isFocusable());
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if (focusedWidget >= 0)
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{
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mFocusedWidget = mWidgets.at(focusedWidget);
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Event focusEvent(mFocusedWidget);
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distributeFocusGainedEvent(focusEvent);
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}
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if (focused >= 0)
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{
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Event focusEvent(mWidgets.at(focused));
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distributeFocusLostEvent(focusEvent);
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}
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}
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bool FocusHandler::isFocused(const Widget* widget) const
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{
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return mFocusedWidget == widget;
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}
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void FocusHandler::add(Widget* widget)
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{
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mWidgets.push_back(widget);
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}
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void FocusHandler::remove(Widget* widget)
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{
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if (isFocused(widget))
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{
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mFocusedWidget = NULL;
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}
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WidgetIterator iter;
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for (iter = mWidgets.begin(); iter != mWidgets.end(); ++iter)
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{
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if ((*iter) == widget)
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{
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mWidgets.erase(iter);
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break;
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}
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}
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if (mDraggedWidget == widget)
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{
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mDraggedWidget = NULL;
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return;
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}
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if (mLastWidgetWithMouse == widget)
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{
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mLastWidgetWithMouse = NULL;
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return;
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}
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if (mLastWidgetWithModalFocus == widget)
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{
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mLastWidgetWithModalFocus = NULL;
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return;
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}
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if (mLastWidgetWithModalMouseInputFocus == widget)
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{
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mLastWidgetWithModalMouseInputFocus = NULL;
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return;
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}
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if (mLastWidgetPressed == widget)
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{
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mLastWidgetPressed = NULL;
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return;
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}
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}
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void FocusHandler::focusNone()
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{
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if (mFocusedWidget != NULL)
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{
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Widget* focused = mFocusedWidget;
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mFocusedWidget = NULL;
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Event focusEvent(focused);
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distributeFocusLostEvent(focusEvent);
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}
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}
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void FocusHandler::tabNext()
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{
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if (mFocusedWidget != NULL)
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{
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if (!mFocusedWidget->isTabOutEnabled())
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{
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return;
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}
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}
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if (mWidgets.size() == 0)
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{
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mFocusedWidget = NULL;
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return;
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}
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int i;
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int focusedWidget = -1;
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for (i = 0; i < (int)mWidgets.size(); ++i)
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{
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if (mWidgets[i] == mFocusedWidget)
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{
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focusedWidget = i;
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}
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}
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int focused = focusedWidget;
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bool done = false;
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// i is a counter that ensures that the following loop
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// won't get stuck in an infinite loop
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i = (int)mWidgets.size();
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do
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{
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++focusedWidget;
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if (i==0)
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{
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focusedWidget = -1;
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break;
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}
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--i;
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if (focusedWidget >= (int)mWidgets.size())
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{
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focusedWidget = 0;
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}
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if (focusedWidget == focused)
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{
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return;
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}
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if (mWidgets.at(focusedWidget)->isFocusable() &&
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mWidgets.at(focusedWidget)->isTabInEnabled() &&
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(mModalFocusedWidget == NULL ||
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mWidgets.at(focusedWidget)->isModalFocused()))
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{
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done = true;
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}
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}
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while (!done);
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if (focusedWidget >= 0)
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{
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mFocusedWidget = mWidgets.at(focusedWidget);
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Event focusEvent(mFocusedWidget);
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distributeFocusGainedEvent(focusEvent);
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}
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if (focused >= 0)
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{
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Event focusEvent(mWidgets.at(focused));
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distributeFocusLostEvent(focusEvent);
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}
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}
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void FocusHandler::tabPrevious()
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{
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if (mFocusedWidget != NULL)
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{
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if (!mFocusedWidget->isTabOutEnabled())
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{
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return;
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}
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}
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if (mWidgets.size() == 0)
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{
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mFocusedWidget = NULL;
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return;
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}
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int i;
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int focusedWidget = -1;
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for (i = 0; i < (int)mWidgets.size(); ++i)
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{
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if (mWidgets[i] == mFocusedWidget)
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{
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focusedWidget = i;
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}
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}
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int focused = focusedWidget;
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bool done = false;
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// i is a counter that ensures that the following loop
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// won't get stuck in an infinite loop
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i = (int)mWidgets.size();
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do
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{
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--focusedWidget;
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if (i==0)
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{
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focusedWidget = -1;
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break;
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}
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--i;
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if (focusedWidget <= 0)
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{
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focusedWidget = mWidgets.size() - 1;
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}
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if (focusedWidget == focused)
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{
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return;
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}
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if (mWidgets.at(focusedWidget)->isFocusable() &&
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mWidgets.at(focusedWidget)->isTabInEnabled() &&
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(mModalFocusedWidget == NULL ||
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mWidgets.at(focusedWidget)->isModalFocused()))
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{
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done = true;
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}
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}
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while (!done);
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if (focusedWidget >= 0)
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{
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mFocusedWidget = mWidgets.at(focusedWidget);
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Event focusEvent(mFocusedWidget);
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distributeFocusGainedEvent(focusEvent);
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}
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if (focused >= 0)
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{
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Event focusEvent(mWidgets.at(focused));
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distributeFocusLostEvent(focusEvent);
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}
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}
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void FocusHandler::distributeFocusLostEvent(const Event& focusEvent)
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{
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Widget* sourceWidget = focusEvent.getSource();
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std::list<FocusListener*> focusListeners = sourceWidget->_getFocusListeners();
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// Send the event to all focus listeners of the widget.
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for (std::list<FocusListener*>::iterator it = focusListeners.begin();
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it != focusListeners.end();
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++it)
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{
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(*it)->focusLost(focusEvent);
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}
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}
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void FocusHandler::distributeFocusGainedEvent(const Event& focusEvent)
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{
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Widget* sourceWidget = focusEvent.getSource();
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std::list<FocusListener*> focusListeners = sourceWidget->_getFocusListeners();
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// Send the event to all focus listeners of the widget.
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for (std::list<FocusListener*>::iterator it = focusListeners.begin();
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it != focusListeners.end();
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++it)
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{
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(*it)->focusGained(focusEvent);
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}
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}
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Widget* FocusHandler::getDraggedWidget()
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{
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return mDraggedWidget;
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}
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void FocusHandler::setDraggedWidget(Widget* draggedWidget)
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{
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mDraggedWidget = draggedWidget;
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}
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Widget* FocusHandler::getLastWidgetWithMouse()
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{
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return mLastWidgetWithMouse;
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}
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void FocusHandler::setLastWidgetWithMouse(Widget* lastWidgetWithMouse)
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{
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mLastWidgetWithMouse = lastWidgetWithMouse;
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}
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Widget* FocusHandler::getLastWidgetWithModalFocus()
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{
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return mLastWidgetWithModalFocus;
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}
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void FocusHandler::setLastWidgetWithModalFocus(Widget* lastWidgetWithModalFocus)
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{
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mLastWidgetWithModalFocus = lastWidgetWithModalFocus;
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}
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Widget* FocusHandler::getLastWidgetWithModalMouseInputFocus()
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{
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return mLastWidgetWithModalMouseInputFocus;
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}
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void FocusHandler::setLastWidgetWithModalMouseInputFocus(Widget* lastWidgetWithModalMouseInputFocus)
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{
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mLastWidgetWithModalMouseInputFocus = lastWidgetWithModalMouseInputFocus;
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}
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Widget* FocusHandler::getLastWidgetPressed()
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{
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return mLastWidgetPressed;
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}
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void FocusHandler::setLastWidgetPressed(Widget* lastWidgetPressed)
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{
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mLastWidgetPressed = lastWidgetPressed;
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}
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}
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