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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/textbox.hpp"
+
+#include "guichan/basiccontainer.hpp"
+#include "guichan/font.hpp"
+#include "guichan/graphics.hpp"
+#include "guichan/key.hpp"
+#include "guichan/mouseinput.hpp"
+
+namespace gcn
+{
+ TextBox::TextBox()
+ {
+ mCaretColumn = 0;
+ mCaretRow = 0;
+ mEditable = true;
+ mOpaque = true;
+
+ setText("");
+
+ setFocusable(true);
+
+ addMouseListener(this);
+ addKeyListener(this);
+ adjustSize();
+ }
+
+ TextBox::TextBox(const std::string& text)
+ {
+ mCaretColumn = 0;
+ mCaretRow = 0;
+ mEditable = true;
+ mOpaque = true;
+
+ setText(text);
+
+ setFocusable(true);
+
+ addMouseListener(this);
+ addKeyListener(this);
+ adjustSize();
+ }
+
+ void TextBox::setText(const std::string& text)
+ {
+ mCaretColumn = 0;
+ mCaretRow = 0;
+
+ mTextRows.clear();
+
+ std::string::size_type pos, lastPos = 0;
+ int length;
+ do
+ {
+ pos = text.find("\n", lastPos);
+
+ if (pos != std::string::npos)
+ {
+ length = pos - lastPos;
+ }
+ else
+ {
+ length = text.size() - lastPos;
+ }
+ std::string sub = text.substr(lastPos, length);
+ mTextRows.push_back(sub);
+ lastPos = pos + 1;
+
+ } while (pos != std::string::npos);
+
+ adjustSize();
+ }
+
+ void TextBox::draw(Graphics* graphics)
+ {
+ unsigned int i;
+
+ if (mOpaque)
+ {
+ graphics->setColor(getBackgroundColor());
+ graphics->fillRectangle(Rectangle(0, 0, getWidth(), getHeight()));
+ }
+
+ if (isFocused() && isEditable())
+ {
+ drawCaret(graphics, getFont()->getWidth(mTextRows[mCaretRow].substr(0, mCaretColumn)), mCaretRow * getFont()->getHeight());
+ }
+
+ graphics->setColor(getForegroundColor());
+ graphics->setFont(getFont());
+
+ for (i = 0; i < mTextRows.size(); i++)
+ {
+ // Move the text one pixel so we can have a caret before a letter.
+ graphics->drawText(mTextRows[i], 1, i * getFont()->getHeight());
+ }
+ }
+
+ void TextBox::drawCaret(Graphics* graphics, int x, int y)
+ {
+ graphics->setColor(getForegroundColor());
+ graphics->drawLine(x, getFont()->getHeight() + y, x, y);
+ }
+
+ void TextBox::mousePressed(MouseEvent& mouseEvent)
+ {
+ if (mouseEvent.getButton() == MouseEvent::LEFT)
+ {
+ mCaretRow = mouseEvent.getY() / getFont()->getHeight();
+
+ if (mCaretRow >= (int)mTextRows.size())
+ {
+ mCaretRow = mTextRows.size() - 1;
+ }
+
+ mCaretColumn = getFont()->getStringIndexAt(mTextRows[mCaretRow], mouseEvent.getX());
+ }
+ }
+
+ void TextBox::mouseDragged(MouseEvent& mouseEvent)
+ {
+ mouseEvent.consume();
+ }
+
+ void TextBox::keyPressed(KeyEvent& keyEvent)
+ {
+ Key key = keyEvent.getKey();
+
+ if (key.getValue() == Key::LEFT)
+ {
+ --mCaretColumn;
+ if (mCaretColumn < 0)
+ {
+ --mCaretRow;
+
+ if (mCaretRow < 0)
+ {
+ mCaretRow = 0;
+ mCaretColumn = 0;
+ }
+ else
+ {
+ mCaretColumn = mTextRows[mCaretRow].size();
+ }
+ }
+ }
+
+ else if (key.getValue() == Key::RIGHT)
+ {
+ ++mCaretColumn;
+ if (mCaretColumn > (int)mTextRows[mCaretRow].size())
+ {
+ ++mCaretRow;
+
+ if (mCaretRow >= (int)mTextRows.size())
+ {
+ mCaretRow = mTextRows.size() - 1;
+ if (mCaretRow < 0)
+ {
+ mCaretRow = 0;
+ }
+
+ mCaretColumn = mTextRows[mCaretRow].size();
+ }
+ else
+ {
+ mCaretColumn = 0;
+ }
+ }
+ }
+
+ else if (key.getValue() == Key::DOWN)
+ {
+ setCaretRow(mCaretRow + 1);
+ }
+
+ else if (key.getValue() == Key::UP)
+ {
+ setCaretRow(mCaretRow - 1);
+ }
+
+ else if (key.getValue() == Key::HOME)
+ {
+ mCaretColumn = 0;
+ }
+
+ else if (key.getValue() == Key::END)
+ {
+ mCaretColumn = mTextRows[mCaretRow].size();
+ }
+
+ else if (key.getValue() == Key::ENTER && mEditable)
+ {
+ mTextRows.insert(mTextRows.begin() + mCaretRow + 1,
+ mTextRows[mCaretRow].substr(mCaretColumn, mTextRows[mCaretRow].size() - mCaretColumn));
+ mTextRows[mCaretRow].resize(mCaretColumn);
+ ++mCaretRow;
+ mCaretColumn = 0;
+ }
+
+ else if (key.getValue() == Key::BACKSPACE
+ && mCaretColumn != 0
+ && mEditable)
+ {
+ mTextRows[mCaretRow].erase(mCaretColumn - 1, 1);
+ --mCaretColumn;
+ }
+
+ else if (key.getValue() == Key::BACKSPACE
+ && mCaretColumn == 0
+ && mCaretRow != 0
+ && mEditable)
+ {
+ mCaretColumn = mTextRows[mCaretRow - 1].size();
+ mTextRows[mCaretRow - 1] += mTextRows[mCaretRow];
+ mTextRows.erase(mTextRows.begin() + mCaretRow);
+ --mCaretRow;
+ }
+
+ else if (key.getValue() == Key::DELETE
+ && mCaretColumn < (int)mTextRows[mCaretRow].size()
+ && mEditable)
+ {
+ mTextRows[mCaretRow].erase(mCaretColumn, 1);
+ }
+
+ else if (key.getValue() == Key::DELETE
+ && mCaretColumn == (int)mTextRows[mCaretRow].size()
+ && mCaretRow < ((int)mTextRows.size() - 1)
+ && mEditable)
+ {
+ mTextRows[mCaretRow] += mTextRows[mCaretRow + 1];
+ mTextRows.erase(mTextRows.begin() + mCaretRow + 1);
+ }
+
+ else if(key.getValue() == Key::PAGE_UP)
+ {
+ Widget* par = getParent();
+
+ if (par != NULL)
+ {
+ int rowsPerPage = par->getChildrenArea().height / getFont()->getHeight();
+ mCaretRow -= rowsPerPage;
+
+ if (mCaretRow < 0)
+ {
+ mCaretRow = 0;
+ }
+ }
+ }
+
+ else if(key.getValue() == Key::PAGE_DOWN)
+ {
+ Widget* par = getParent();
+
+ if (par != NULL)
+ {
+ int rowsPerPage = par->getChildrenArea().height / getFont()->getHeight();
+ mCaretRow += rowsPerPage;
+
+ if (mCaretRow >= (int)mTextRows.size())
+ {
+ mCaretRow = mTextRows.size() - 1;
+ }
+ }
+ }
+
+ else if(key.getValue() == Key::TAB
+ && mEditable)
+ {
+ mTextRows[mCaretRow].insert(mCaretColumn,std::string(" "));
+ mCaretColumn += 4;
+ }
+
+ else if (key.isCharacter()
+ && mEditable)
+ {
+ mTextRows[mCaretRow].insert(mCaretColumn,std::string(1,(char)key.getValue()));
+ ++mCaretColumn;
+ }
+
+ adjustSize();
+ scrollToCaret();
+
+ keyEvent.consume();
+ }
+
+ void TextBox::adjustSize()
+ {
+ unsigned int i;
+ int width = 0;
+ for (i = 0; i < mTextRows.size(); ++i)
+ {
+ int w = getFont()->getWidth(mTextRows[i]);
+ if (width < w)
+ {
+ width = w;
+ }
+ }
+
+ setWidth(width + 1);
+ setHeight(getFont()->getHeight() * mTextRows.size());
+ }
+
+ void TextBox::setCaretPosition(unsigned int position)
+ {
+ int row;
+
+ for (row = 0; row < (int)mTextRows.size(); row++)
+ {
+ if (position <= mTextRows[row].size())
+ {
+ mCaretRow = row;
+ mCaretColumn = position;
+ return; // we are done
+ }
+ else
+ {
+ position--;
+ }
+ }
+
+ // position beyond end of text
+ mCaretRow = mTextRows.size() - 1;
+ mCaretColumn = mTextRows[mCaretRow].size();
+ }
+
+ unsigned int TextBox::getCaretPosition() const
+ {
+ int pos = 0, row;
+
+ for (row = 0; row < mCaretRow; row++)
+ {
+ pos += mTextRows[row].size();
+ }
+
+ return pos + mCaretColumn;
+ }
+
+ void TextBox::setCaretRowColumn(int row, int column)
+ {
+ setCaretRow(row);
+ setCaretColumn(column);
+ }
+
+ void TextBox::setCaretRow(int row)
+ {
+ mCaretRow = row;
+
+ if (mCaretRow >= (int)mTextRows.size())
+ {
+ mCaretRow = mTextRows.size() - 1;
+ }
+
+ if (mCaretRow < 0)
+ {
+ mCaretRow = 0;
+ }
+
+ setCaretColumn(mCaretColumn);
+ }
+
+ unsigned int TextBox::getCaretRow() const
+ {
+ return mCaretRow;
+ }
+
+ void TextBox::setCaretColumn(int column)
+ {
+ mCaretColumn = column;
+
+ if (mCaretColumn > (int)mTextRows[mCaretRow].size())
+ {
+ mCaretColumn = mTextRows[mCaretRow].size();
+ }
+
+ if (mCaretColumn < 0)
+ {
+ mCaretColumn = 0;
+ }
+ }
+
+ unsigned int TextBox::getCaretColumn() const
+ {
+ return mCaretColumn;
+ }
+
+ const std::string& TextBox::getTextRow(int row) const
+ {
+ return mTextRows[row];
+ }
+
+ void TextBox::setTextRow(int row, const std::string& text)
+ {
+ mTextRows[row] = text;
+
+ if (mCaretRow == row)
+ {
+ setCaretColumn(mCaretColumn);
+ }
+
+ adjustSize();
+ }
+
+ unsigned int TextBox::getNumberOfRows() const
+ {
+ return mTextRows.size();
+ }
+
+ std::string TextBox::getText() const
+ {
+ if (mTextRows.size() == 0)
+ {
+ return std::string("");
+ }
+
+ int i;
+ std::string text;
+
+ for (i = 0; i < (int)mTextRows.size() - 1; ++i)
+ {
+ text = text + mTextRows[i] + "\n";
+ }
+
+ text = text + mTextRows[i];
+
+ return text;
+ }
+
+ void TextBox::fontChanged()
+ {
+ adjustSize();
+ }
+
+ void TextBox::scrollToCaret()
+ {
+ Rectangle scroll;
+ scroll.x = getFont()->getWidth(mTextRows[mCaretRow].substr(0, mCaretColumn));
+ scroll.y = getFont()->getHeight() * mCaretRow;
+ scroll.width = getFont()->getWidth(" ");
+ scroll.height = getFont()->getHeight() + 2; // add 2 for some extra space
+
+ showPart(scroll);
+ }
+
+ void TextBox::setEditable(bool editable)
+ {
+ mEditable = editable;
+ }
+
+ bool TextBox::isEditable() const
+ {
+ return mEditable;
+ }
+
+ void TextBox::addRow(const std::string row)
+ {
+ mTextRows.push_back(row);
+ adjustSize();
+ }
+
+ bool TextBox::isOpaque()
+ {
+ return mOpaque;
+ }
+
+ void TextBox::setOpaque(bool opaque)
+ {
+ mOpaque = opaque;
+ }
+}
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