--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ext/guichan-0.8.1/src/widgets/listbox.cpp	Sun Jun 29 18:44:17 2008 +0000
@@ -0,0 +1,350 @@
+/*      _______   __   __   __   ______   __   __   _______   __   __
+ *     / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___  /\ /  |\/ /\
+ *    / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ *   / / /__   / / // / // / // / /    / ___  / // ___  / // /| ' / /
+ *  / /_// /\ / /_// / // / // /_/_   / / // / // /\_/ / // / |  / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * 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 "guichan/widgets/listbox.hpp"
+
+#include "guichan/basiccontainer.hpp"
+#include "guichan/font.hpp"
+#include "guichan/graphics.hpp"
+#include "guichan/key.hpp"
+#include "guichan/listmodel.hpp"
+#include "guichan/mouseinput.hpp"
+#include "guichan/selectionlistener.hpp"
+
+namespace gcn
+{
+    ListBox::ListBox()
+        : mSelected(-1),
+          mListModel(NULL),
+          mWrappingEnabled(false)
+    {
+        setWidth(100);
+        setFocusable(true);
+
+        addMouseListener(this);
+        addKeyListener(this);
+    }
+
+    ListBox::ListBox(ListModel *listModel)
+        : mSelected(-1),
+          mWrappingEnabled(false)
+    {
+        setWidth(100);
+        setListModel(listModel);
+        setFocusable(true);
+
+        addMouseListener(this);
+        addKeyListener(this);
+    }
+
+    void ListBox::draw(Graphics* graphics)
+    {
+        graphics->setColor(getBackgroundColor());
+        graphics->fillRectangle(Rectangle(0, 0, getWidth(), getHeight()));
+
+        if (mListModel == NULL)
+        {
+            return;
+        }
+
+        graphics->setColor(getForegroundColor());
+        graphics->setFont(getFont());
+         
+        // Check the current clip area so we don't draw unnecessary items
+        // that are not visible.
+        const ClipRectangle currentClipArea = graphics->getCurrentClipArea();
+        int rowHeight = getRowHeight();
+        
+		// Calculate the number of rows to draw by checking the clip area.
+		// The addition of two makes covers a partial visible row at the top
+		// and a partial visible row at the bottom.
+		int numberOfRows = currentClipArea.height / rowHeight + 2;
+
+        if (numberOfRows > mListModel->getNumberOfElements())
+        {
+            numberOfRows = mListModel->getNumberOfElements();
+        }
+
+		// Calculate which row to start drawing. If the list box 
+		// has a negative y coordinate value we should check if
+		// we should drop rows in the begining of the list as
+		// they might not be visible. A negative y value is very
+		// common if the list box for instance resides in a scroll
+		// area and the user has scrolled the list box downwards.
+		int startRow;    	
+		if (getY() < 0)
+		{
+			startRow = -1 * (getY() / rowHeight);
+		}
+		else
+		{
+			startRow = 0;
+		}
+
+		int i;
+		// The y coordinate where we start to draw the text is
+		// simply the y coordinate multiplied with the font height.
+		int y = rowHeight * startRow;
+        for (i = startRow; i < startRow + numberOfRows; ++i)
+        {
+            if (i == mSelected)
+            {
+                graphics->setColor(getSelectionColor());
+                graphics->fillRectangle(Rectangle(0, y, getWidth(), rowHeight));
+                graphics->setColor(getForegroundColor());
+            }
+			
+			// If the row height is greater than the font height we
+			// draw the text with a center vertical alignment.
+			if (rowHeight > getFont()->getHeight())
+			{
+				graphics->drawText(mListModel->getElementAt(i), 1, y + rowHeight / 2 - getFont()->getHeight() / 2);
+			}
+			else
+			{
+				graphics->drawText(mListModel->getElementAt(i), 1, y);
+			}
+
+            y += rowHeight;
+        }
+    }
+
+    void ListBox::logic()
+    {
+        adjustSize();
+    }
+
+    int ListBox::getSelected() const
+    {
+        return mSelected;
+    }
+
+    void ListBox::setSelected(int selected)
+    {
+        if (mListModel == NULL)
+        {
+            mSelected = -1;
+        }
+        else
+        {
+            if (selected < 0)
+            {
+                mSelected = -1;
+            }
+            else if (selected >= mListModel->getNumberOfElements())
+            {
+                mSelected = mListModel->getNumberOfElements() - 1;
+            }
+            else
+            {
+                mSelected = selected;
+            }
+
+            Rectangle scroll;
+
+            if (mSelected < 0)
+            {
+                scroll.y = 0;
+            }
+            else
+            {
+                scroll.y = getRowHeight() * mSelected;
+            }
+
+            scroll.height = getRowHeight();
+            showPart(scroll);
+        }
+
+        distributeValueChangedEvent();
+    }
+
+    void ListBox::keyPressed(KeyEvent& keyEvent)
+    {
+        Key key = keyEvent.getKey();
+
+        if (key.getValue() == Key::ENTER || key.getValue() == Key::SPACE)
+        {
+            distributeActionEvent();
+            keyEvent.consume();
+        }
+        else if (key.getValue() == Key::UP)
+        {
+            setSelected(mSelected - 1);
+
+            if (mSelected == -1)
+            {
+                if (mWrappingEnabled)
+                {
+                    setSelected(getListModel()->getNumberOfElements() - 1);
+                }
+                else
+                {
+                    setSelected(0);
+                }
+            }
+            
+            keyEvent.consume();
+        }
+        else if (key.getValue() == Key::DOWN)
+        {
+            if (mWrappingEnabled
+                && getSelected() == getListModel()->getNumberOfElements() - 1)
+            {
+                setSelected(0);
+            }
+            else
+            {
+                setSelected(getSelected() + 1);
+            }
+            
+            keyEvent.consume();
+        }
+        else if (key.getValue() == Key::HOME)
+        {
+            setSelected(0);
+            keyEvent.consume();
+        }
+        else if (key.getValue() == Key::END)
+        {
+            setSelected(getListModel()->getNumberOfElements() - 1);
+            keyEvent.consume();
+        }
+    }
+
+    void ListBox::mousePressed(MouseEvent& mouseEvent)
+    {
+        if (mouseEvent.getButton() == MouseEvent::LEFT)
+        {
+            setSelected(mouseEvent.getY() / getRowHeight());
+            distributeActionEvent();
+        }
+    }
+
+    void ListBox::mouseWheelMovedUp(MouseEvent& mouseEvent)
+    {
+        if (isFocused())
+        {
+            if (getSelected() > 0 )
+            {
+                setSelected(getSelected() - 1);
+            }
+
+            mouseEvent.consume();
+        }
+    }
+
+    void ListBox::mouseWheelMovedDown(MouseEvent& mouseEvent)
+    {
+        if (isFocused())
+        {
+            setSelected(getSelected() + 1);
+
+            mouseEvent.consume();
+        }
+    }
+
+    void ListBox::mouseDragged(MouseEvent& mouseEvent)
+    {
+        mouseEvent.consume();
+    }
+
+    void ListBox::setListModel(ListModel *listModel)
+    {
+        mSelected = -1;
+        mListModel = listModel;
+        adjustSize();
+    }
+
+    ListModel* ListBox::getListModel()
+    {
+        return mListModel;
+    }
+
+    void ListBox::adjustSize()
+    {
+        if (mListModel != NULL)
+        {
+            setHeight(getRowHeight() * mListModel->getNumberOfElements());
+        }
+    }
+
+    bool ListBox::isWrappingEnabled() const
+    {
+        return mWrappingEnabled;
+    }
+
+    void ListBox::setWrappingEnabled(bool wrappingEnabled)
+    {
+        mWrappingEnabled = wrappingEnabled;
+    }
+        
+    void ListBox::addSelectionListener(SelectionListener* selectionListener)
+    {
+        mSelectionListeners.push_back(selectionListener);
+    }
+   
+    void ListBox::removeSelectionListener(SelectionListener* selectionListener)
+    {
+        mSelectionListeners.remove(selectionListener);
+    }
+
+    void ListBox::distributeValueChangedEvent()
+    {
+        SelectionListenerIterator iter;
+
+        for (iter = mSelectionListeners.begin(); iter != mSelectionListeners.end(); ++iter)
+        {
+            SelectionEvent event(this);
+            (*iter)->valueChanged(event);
+        }
+    }
+
+	unsigned int ListBox::getRowHeight() const
+	{
+		return getFont()->getHeight();
+	}
+}