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+/* _______ __ __ __ ______ __ __ _______ __ __
+ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\
+ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / /
+ * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / /
+ * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / /
+ * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ /
+ * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/
+ *
+ * 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/textfield.hpp"
+
+#include "guichan/font.hpp"
+#include "guichan/graphics.hpp"
+#include "guichan/key.hpp"
+#include "guichan/mouseinput.hpp"
+
+namespace gcn
+{
+ TextField::TextField()
+ {
+ mCaretPosition = 0;
+ mXScroll = 0;
+
+ setFocusable(true);
+
+ addMouseListener(this);
+ addKeyListener(this);
+ }
+
+ TextField::TextField(const std::string& text)
+ {
+ mCaretPosition = 0;
+ mXScroll = 0;
+
+ mText = text;
+ adjustSize();
+
+ setFocusable(true);
+
+ addMouseListener(this);
+ addKeyListener(this);
+ }
+
+ void TextField::setText(const std::string& text)
+ {
+ if(text.size() < mCaretPosition )
+ {
+ mCaretPosition = text.size();
+ }
+
+ mText = text;
+ }
+
+ void TextField::draw(Graphics* graphics)
+ {
+ Color faceColor = getBaseColor();
+ Color highlightColor, shadowColor;
+ int alpha = getBaseColor().a;
+ highlightColor = faceColor + 0x303030;
+ highlightColor.a = alpha;
+ shadowColor = faceColor - 0x303030;
+ shadowColor.a = alpha;
+
+ // Draw a border.
+ graphics->setColor(shadowColor);
+ graphics->drawLine(0, 0, getWidth() - 1, 0);
+ graphics->drawLine(0, 1, 0, getHeight() - 2);
+ graphics->setColor(highlightColor);
+ graphics->drawLine(getWidth() - 1, 1, getWidth() - 1, getHeight() - 1);
+ graphics->drawLine(0, getHeight() - 1, getWidth() - 1, getHeight() - 1);
+
+ // Push a clip area so the other drawings don't need to worry
+ // about the border.
+ graphics->pushClipArea(Rectangle(1, 1, getWidth() - 2, getHeight() - 2));
+
+ graphics->setColor(getBackgroundColor());
+ graphics->fillRectangle(Rectangle(0, 0, getWidth(), getHeight()));
+
+ if (isFocused())
+ {
+ graphics->setColor(getSelectionColor());
+ graphics->drawRectangle(Rectangle(0, 0, getWidth() - 2, getHeight() - 2));
+ graphics->drawRectangle(Rectangle(1, 1, getWidth() - 4, getHeight() - 4));
+ }
+
+ if (isFocused())
+ {
+ drawCaret(graphics, getFont()->getWidth(mText.substr(0, mCaretPosition)) - mXScroll);
+ }
+
+ graphics->setColor(getForegroundColor());
+ graphics->setFont(getFont());
+ graphics->drawText(mText, 3 - mXScroll, 1);
+
+ graphics->popClipArea();
+ }
+
+ void TextField::drawCaret(Graphics* graphics, int x)
+ {
+ // Check the current clip area as a clip area with a different
+ // size than the widget might have been pushed (which is the
+ // case in the draw method when we push a clip area after we have
+ // drawn a border).
+ const Rectangle clipArea = graphics->getCurrentClipArea();
+
+ graphics->setColor(getForegroundColor());
+ graphics->drawLine(x, clipArea.height - 2, x, 1);
+ }
+
+ void TextField::mousePressed(MouseEvent& mouseEvent)
+ {
+ if (mouseEvent.getButton() == MouseEvent::LEFT)
+ {
+ mCaretPosition = getFont()->getStringIndexAt(mText, mouseEvent.getX() + mXScroll);
+ fixScroll();
+ }
+ }
+
+ void TextField::mouseDragged(MouseEvent& mouseEvent)
+ {
+ mouseEvent.consume();
+ }
+
+ void TextField::keyPressed(KeyEvent& keyEvent)
+ {
+ Key key = keyEvent.getKey();
+
+ if (key.getValue() == Key::LEFT && mCaretPosition > 0)
+ {
+ --mCaretPosition;
+ }
+
+ else if (key.getValue() == Key::RIGHT && mCaretPosition < mText.size())
+ {
+ ++mCaretPosition;
+ }
+
+ else if (key.getValue() == Key::DELETE && mCaretPosition < mText.size())
+ {
+ mText.erase(mCaretPosition, 1);
+ }
+
+ else if (key.getValue() == Key::BACKSPACE && mCaretPosition > 0)
+ {
+ mText.erase(mCaretPosition - 1, 1);
+ --mCaretPosition;
+ }
+
+ else if (key.getValue() == Key::ENTER)
+ {
+ distributeActionEvent();
+ }
+
+ else if (key.getValue() == Key::HOME)
+ {
+ mCaretPosition = 0;
+ }
+
+ else if (key.getValue() == Key::END)
+ {
+ mCaretPosition = mText.size();
+ }
+
+ else if (key.isCharacter()
+ && key.getValue() != Key::TAB)
+ {
+ mText.insert(mCaretPosition, std::string(1,(char)key.getValue()));
+ ++mCaretPosition;
+ }
+
+ if (key.getValue() != Key::TAB)
+ {
+ keyEvent.consume();
+ }
+
+ fixScroll();
+ }
+
+ void TextField::adjustSize()
+ {
+ setWidth(getFont()->getWidth(mText) + 7);
+ adjustHeight();
+
+ fixScroll();
+ }
+
+ void TextField::adjustHeight()
+ {
+ setHeight(getFont()->getHeight() + 4);
+ }
+
+ void TextField::fixScroll()
+ {
+ if (isFocused())
+ {
+ int caretX = getFont()->getWidth(mText.substr(0, mCaretPosition));
+
+ if (caretX - mXScroll >= getWidth() - 4)
+ {
+ mXScroll = caretX - getWidth() + 4;
+ }
+ else if (caretX - mXScroll <= 0)
+ {
+ mXScroll = caretX - getWidth() / 2;
+
+ if (mXScroll < 0)
+ {
+ mXScroll = 0;
+ }
+ }
+ }
+ }
+
+ void TextField::setCaretPosition(unsigned int position)
+ {
+ if (position > mText.size())
+ {
+ mCaretPosition = mText.size();
+ }
+ else
+ {
+ mCaretPosition = position;
+ }
+
+ fixScroll();
+ }
+
+ unsigned int TextField::getCaretPosition() const
+ {
+ return mCaretPosition;
+ }
+
+ const std::string& TextField::getText() const
+ {
+ return mText;
+ }
+
+ void TextField::fontChanged()
+ {
+ fixScroll();
+ }
+}