mirror of
https://github.com/Oibaf66/frodo-wii.git
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351 lines
9.6 KiB
C++
351 lines
9.6 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/widgets/listbox.hpp"
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#include "guichan/basiccontainer.hpp"
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#include "guichan/font.hpp"
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#include "guichan/graphics.hpp"
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#include "guichan/key.hpp"
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#include "guichan/listmodel.hpp"
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#include "guichan/mouseinput.hpp"
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#include "guichan/selectionlistener.hpp"
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namespace gcn
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{
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ListBox::ListBox()
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: mSelected(-1),
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mListModel(NULL),
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mWrappingEnabled(false)
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{
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setWidth(100);
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setFocusable(true);
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addMouseListener(this);
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addKeyListener(this);
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}
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ListBox::ListBox(ListModel *listModel)
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: mSelected(-1),
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mWrappingEnabled(false)
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{
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setWidth(100);
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setListModel(listModel);
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setFocusable(true);
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addMouseListener(this);
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addKeyListener(this);
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}
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void ListBox::draw(Graphics* graphics)
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{
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graphics->setColor(getBackgroundColor());
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graphics->fillRectangle(Rectangle(0, 0, getWidth(), getHeight()));
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if (mListModel == NULL)
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{
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return;
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}
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graphics->setColor(getForegroundColor());
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graphics->setFont(getFont());
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// Check the current clip area so we don't draw unnecessary items
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// that are not visible.
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const ClipRectangle currentClipArea = graphics->getCurrentClipArea();
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int rowHeight = getRowHeight();
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// Calculate the number of rows to draw by checking the clip area.
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// The addition of two makes covers a partial visible row at the top
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// and a partial visible row at the bottom.
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int numberOfRows = currentClipArea.height / rowHeight + 2;
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if (numberOfRows > mListModel->getNumberOfElements())
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{
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numberOfRows = mListModel->getNumberOfElements();
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}
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// Calculate which row to start drawing. If the list box
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// has a negative y coordinate value we should check if
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// we should drop rows in the begining of the list as
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// they might not be visible. A negative y value is very
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// common if the list box for instance resides in a scroll
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// area and the user has scrolled the list box downwards.
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int startRow;
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if (getY() < 0)
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{
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startRow = -1 * (getY() / rowHeight);
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}
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else
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{
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startRow = 0;
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}
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int i;
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// The y coordinate where we start to draw the text is
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// simply the y coordinate multiplied with the font height.
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int y = rowHeight * startRow;
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for (i = startRow; i < startRow + numberOfRows; ++i)
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{
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if (i == mSelected)
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{
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graphics->setColor(getSelectionColor());
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graphics->fillRectangle(Rectangle(0, y, getWidth(), rowHeight));
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graphics->setColor(getForegroundColor());
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}
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// If the row height is greater than the font height we
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// draw the text with a center vertical alignment.
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if (rowHeight > getFont()->getHeight())
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{
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graphics->drawText(mListModel->getElementAt(i), 1, y + rowHeight / 2 - getFont()->getHeight() / 2);
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}
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else
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{
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graphics->drawText(mListModel->getElementAt(i), 1, y);
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}
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y += rowHeight;
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}
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}
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void ListBox::logic()
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{
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adjustSize();
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}
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int ListBox::getSelected() const
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{
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return mSelected;
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}
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void ListBox::setSelected(int selected)
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{
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if (mListModel == NULL)
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{
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mSelected = -1;
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}
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else
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{
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if (selected < 0)
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{
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mSelected = -1;
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}
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else if (selected >= mListModel->getNumberOfElements())
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{
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mSelected = mListModel->getNumberOfElements() - 1;
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}
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else
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{
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mSelected = selected;
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}
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}
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Rectangle scroll;
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if (mSelected < 0)
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{
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scroll.y = 0;
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}
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else
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{
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scroll.y = getRowHeight() * mSelected;
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}
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scroll.height = getRowHeight();
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showPart(scroll);
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distributeValueChangedEvent();
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}
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void ListBox::keyPressed(KeyEvent& keyEvent)
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{
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Key key = keyEvent.getKey();
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if (key.getValue() == Key::ENTER || key.getValue() == Key::SPACE)
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{
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distributeActionEvent();
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keyEvent.consume();
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}
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else if (key.getValue() == Key::UP)
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{
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setSelected(mSelected - 1);
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if (mSelected == -1)
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{
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if (mWrappingEnabled)
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{
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setSelected(getListModel()->getNumberOfElements() - 1);
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}
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else
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{
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setSelected(0);
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}
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}
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keyEvent.consume();
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}
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else if (key.getValue() == Key::DOWN)
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{
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if (mWrappingEnabled
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&& getSelected() == getListModel()->getNumberOfElements() - 1)
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{
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setSelected(0);
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}
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else
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{
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setSelected(getSelected() + 1);
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}
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keyEvent.consume();
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}
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else if (key.getValue() == Key::HOME)
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{
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setSelected(0);
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keyEvent.consume();
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}
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else if (key.getValue() == Key::END)
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{
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setSelected(getListModel()->getNumberOfElements() - 1);
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keyEvent.consume();
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}
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}
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void ListBox::mousePressed(MouseEvent& mouseEvent)
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{
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if (mouseEvent.getButton() == MouseEvent::LEFT)
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{
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setSelected(mouseEvent.getY() / getRowHeight());
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distributeActionEvent();
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}
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}
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void ListBox::mouseWheelMovedUp(MouseEvent& mouseEvent)
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{
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if (isFocused())
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{
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if (getSelected() > 0 )
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{
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setSelected(getSelected() - 1);
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}
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mouseEvent.consume();
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}
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}
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void ListBox::mouseWheelMovedDown(MouseEvent& mouseEvent)
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{
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if (isFocused())
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{
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setSelected(getSelected() + 1);
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mouseEvent.consume();
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}
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}
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void ListBox::mouseDragged(MouseEvent& mouseEvent)
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{
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mouseEvent.consume();
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}
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void ListBox::setListModel(ListModel *listModel)
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{
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mSelected = -1;
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mListModel = listModel;
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adjustSize();
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}
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ListModel* ListBox::getListModel()
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{
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return mListModel;
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}
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void ListBox::adjustSize()
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{
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if (mListModel != NULL)
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{
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setHeight(getRowHeight() * mListModel->getNumberOfElements());
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}
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}
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bool ListBox::isWrappingEnabled() const
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{
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return mWrappingEnabled;
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}
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void ListBox::setWrappingEnabled(bool wrappingEnabled)
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{
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mWrappingEnabled = wrappingEnabled;
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}
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void ListBox::addSelectionListener(SelectionListener* selectionListener)
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{
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mSelectionListeners.push_back(selectionListener);
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}
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void ListBox::removeSelectionListener(SelectionListener* selectionListener)
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{
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mSelectionListeners.remove(selectionListener);
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}
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void ListBox::distributeValueChangedEvent()
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{
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SelectionListenerIterator iter;
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for (iter = mSelectionListeners.begin(); iter != mSelectionListeners.end(); ++iter)
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{
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SelectionEvent event(this);
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(*iter)->valueChanged(event);
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}
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}
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unsigned int ListBox::getRowHeight() const
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{
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return getFont()->getHeight();
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}
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}
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