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Diffstat (limited to 'src/guichan/widgets/textfield.cpp')
| -rw-r--r-- | src/guichan/widgets/textfield.cpp | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/guichan/widgets/textfield.cpp b/src/guichan/widgets/textfield.cpp new file mode 100644 index 000000000..e8fc9c5d6 --- /dev/null +++ b/src/guichan/widgets/textfield.cpp @@ -0,0 +1,280 @@ +/* _______ __ __ __ ______ __ __ _______ __ __ + * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ + * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / + * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / + * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / + * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / + * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ + * + * 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(); + } +} |