/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2014 The ManaPlus Developers * * This file is part of The ManaPlus Client. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* _______ __ __ __ ______ __ __ _______ __ __ * / _____/\ / /\ / /\ / /\ / ____/\ / /\ / /\ / ___ /\ / |\/ /\ * / /\____\// / // / // / // /\___\// /_// / // /\_/ / // , |/ / / * / / /__ / / // / // / // / / / ___ / // ___ / // /| ' / / * / /_// /\ / /_// / // / // /_/_ / / // / // /\_/ / // / | / / * /______/ //______/ //_/ //_____/\ /_/ //_/ //_/ //_/ //_/ /|_/ / * \______\/ \______\/ \_\/ \_____\/ \_\/ \_\/ \_\/ \_\/ \_\/ \_\/ * * 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. */ #include "gui/widgets/textbox.h" #include "events/keyevent.h" #include "input/keydata.h" #include "gui/font.h" #include "gui/gui.h" #include <sstream> #include "debug.h" TextBox::TextBox(const Widget2 *const widget) : Widget(widget), MouseListener(), KeyListener(), mTextRows(), mCaretColumn(0), mCaretRow(0), mMinWidth(getWidth()), mEditable(true), mOpaque(true) { setText(""); setFocusable(true); addMouseListener(this); addKeyListener(this); adjustSize(); mForegroundColor = getThemeColor(Theme::TEXTBOX); setOpaque(false); setFrameSize(0); } TextBox::~TextBox() { if (gui) gui->removeDragged(this); } void TextBox::setTextWrapped(const std::string &text, const int minDimension) { // Make sure parent scroll area sets width of this widget if (getParent()) getParent()->logic(); // Take the supplied minimum dimension as a starting // point and try to beat it mMinWidth = minDimension; const size_t textSize = text.size(); size_t spacePos = text.rfind(" ", textSize); if (spacePos != std::string::npos) { const std::string word = text.substr(spacePos + 1); const int length = getFont()->getWidth(word); if (length > mMinWidth) mMinWidth = length; } std::stringstream wrappedStream; size_t newlinePos; size_t lastNewlinePos = 0; int minWidth = 0; int xpos; do { // Determine next piece of string to wrap newlinePos = text.find("\n", lastNewlinePos); if (newlinePos == std::string::npos) newlinePos = textSize; std::string line = text.substr(lastNewlinePos, newlinePos - lastNewlinePos); size_t lastSpacePos = 0; xpos = 0; const Font *const font = getFont(); const int spaceWidth = font->getWidth(" "); size_t sz = line.size(); do { spacePos = line.find(" ", lastSpacePos); if (spacePos == std::string::npos) spacePos = sz; const std::string word = line.substr(lastSpacePos, spacePos - lastSpacePos); const int width = font->getWidth(word); if (xpos == 0 && width > mMinWidth) { mMinWidth = width; xpos = width; wrappedStream << word; } else if (xpos != 0 && xpos + spaceWidth + width <= mMinWidth) { xpos += spaceWidth + width; wrappedStream << " " << word; } else if (lastSpacePos == 0) { xpos += width; wrappedStream << word; } else { if (xpos > minWidth) minWidth = xpos; // The window wasn't big enough. Resize it and try again. if (minWidth > mMinWidth) { mMinWidth = minWidth; wrappedStream.clear(); wrappedStream.str(""); lastNewlinePos = 0; newlinePos = text.find("\n", lastNewlinePos); if (newlinePos == std::string::npos) newlinePos = textSize; line = text.substr(lastNewlinePos, newlinePos - lastNewlinePos); sz = line.size(); break; } else { wrappedStream << "\n" << word; } xpos = width; } lastSpacePos = spacePos + 1; } while (spacePos != sz); if (text.find("\n", lastNewlinePos) != std::string::npos) wrappedStream << "\n"; lastNewlinePos = newlinePos + 1; } while (newlinePos != textSize); if (xpos > minWidth) minWidth = xpos; mMinWidth = minWidth; setText(wrappedStream.str()); } void TextBox::setText(const std::string& text) { mCaretColumn = 0; mCaretRow = 0; mTextRows.clear(); size_t pos; size_t lastPos = 0; int length; do { pos = text.find("\n", lastPos); if (pos != std::string::npos) length = static_cast<int>(pos - lastPos); else length = static_cast<int>(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::keyPressed(KeyEvent& keyEvent) { const Key &key = keyEvent.getKey(); const int action = keyEvent.getActionId(); switch (action) { case Input::KEY_GUI_LEFT: { --mCaretColumn; if (mCaretColumn < 0) { --mCaretRow; if (mCaretRow < 0) { mCaretRow = 0; mCaretColumn = 0; } else { mCaretColumn = static_cast<int>( mTextRows[mCaretRow].size()); } } break; } case Input::KEY_GUI_RIGHT: { ++mCaretColumn; if (mCaretColumn > static_cast<int>(mTextRows[mCaretRow].size())) { ++ mCaretRow; const int sz = static_cast<int>(mTextRows.size()); if (mCaretRow >= sz) { mCaretRow = sz - 1; if (mCaretRow < 0) mCaretRow = 0; mCaretColumn = static_cast<int>( mTextRows[mCaretRow].size()); } else { mCaretColumn = 0; } } break; } case Input::KEY_GUI_DOWN: { setCaretRow(mCaretRow + 1); break; } case Input::KEY_GUI_UP: { setCaretRow(mCaretRow - 1); break; } case Input::KEY_GUI_HOME: { mCaretColumn = 0; break; } case Input::KEY_GUI_END: { mCaretColumn = static_cast<int>(mTextRows[mCaretRow].size()); break; } case Input::KEY_GUI_SELECT2: { if (mEditable) { mTextRows.insert(mTextRows.begin() + mCaretRow + 1, mTextRows[mCaretRow].substr(mCaretColumn, mTextRows[mCaretRow].size() - mCaretColumn)); mTextRows[mCaretRow].resize(mCaretColumn); ++mCaretRow; mCaretColumn = 0; } break; } case Input::KEY_GUI_BACKSPACE: { if (mCaretColumn != 0 && mEditable) { mTextRows[mCaretRow].erase(mCaretColumn - 1, 1); --mCaretColumn; } else if (mCaretColumn == 0 && mCaretRow != 0 && mEditable) { mCaretColumn = static_cast<int>( mTextRows[mCaretRow - 1].size()); mTextRows[mCaretRow - 1] += mTextRows[mCaretRow]; mTextRows.erase(mTextRows.begin() + mCaretRow); --mCaretRow; } break; } case Input::KEY_GUI_DELETE: { if (mCaretColumn < static_cast<int>( mTextRows[mCaretRow].size()) && mEditable) { mTextRows[mCaretRow].erase(mCaretColumn, 1); } else if (mCaretColumn == static_cast<int>( mTextRows[mCaretRow].size()) && mCaretRow < (static_cast<int>(mTextRows.size()) - 1) && mEditable) { mTextRows[mCaretRow] += mTextRows[mCaretRow + 1]; mTextRows.erase(mTextRows.begin() + mCaretRow + 1); } break; } case Input::KEY_GUI_PAGE_UP: { Widget *const par = getParent(); if (par) { const int rowsPerPage = par->getChildrenArea().height / getFont()->getHeight(); mCaretRow -= rowsPerPage; if (mCaretRow < 0) mCaretRow = 0; } break; } case Input::KEY_GUI_PAGE_DOWN: { Widget *const par = getParent(); if (par) { const int rowsPerPage = par->getChildrenArea().height / getFont()->getHeight(); mCaretRow += rowsPerPage; const int sz = static_cast<int>(mTextRows.size()); if (mCaretRow >= sz) mCaretRow = sz - 1; } break; } case Input::KEY_GUI_TAB: { if (mEditable) { mTextRows[mCaretRow].insert(mCaretColumn, std::string(" ")); mCaretColumn += 4; } break; } default: { if (key.isCharacter() && mEditable) { mTextRows[mCaretRow].insert(mCaretColumn, std::string(1, static_cast<signed char>(key.getValue()))); ++ mCaretColumn; } break; } } adjustSize(); scrollToCaret(); keyEvent.consume(); } void TextBox::draw(Graphics* graphics) { BLOCK_START("TextBox::draw") if (mOpaque) { graphics->setColor(mBackgroundColor); graphics->fillRectangle(Rect(0, 0, getWidth(), getHeight())); } Font *const font = getFont(); if (isFocused() && isEditable()) { drawCaret(graphics, font->getWidth( mTextRows[mCaretRow].substr(0, mCaretColumn)), mCaretRow * font->getHeight()); } graphics->setColorAll(mForegroundColor, mForegroundColor2); const int fontHeight = font->getHeight(); for (size_t i = 0, sz = mTextRows.size(); i < sz; i++) { // Move the text one pixel so we can have a caret before a letter. font->drawString(graphics, mTextRows[i], 1, i * fontHeight); } BLOCK_END("TextBox::draw") } void TextBox::setForegroundColor(const Color &color) { mForegroundColor = color; mForegroundColor2 = color; } void TextBox::setForegroundColorAll(const Color &color1, const Color &color2) { mForegroundColor = color1; mForegroundColor2 = color2; } std::string TextBox::getText() const { if (mTextRows.empty()) return std::string(""); int i; std::string text; const int sz = static_cast<int>(mTextRows.size()); for (i = 0; i < sz - 1; ++ i) text.append(mTextRows[i]).append("\n"); text.append(mTextRows[i]); return text; } void TextBox::setTextRow(const int row, const std::string& text) { mTextRows[row] = text; if (mCaretRow == row) setCaretColumn(mCaretColumn); adjustSize(); } void TextBox::setCaretPosition(unsigned int position) { for (int row = 0, sz = static_cast<int>(mTextRows.size()); row < sz; row ++) { if (position <= mTextRows[row].size()) { mCaretRow = row; mCaretColumn = position; return; // we are done } else { position--; } } // position beyond end of text mCaretRow = static_cast<int>(mTextRows.size() - 1); mCaretColumn = static_cast<int>(mTextRows[mCaretRow].size()); } void TextBox::setCaretRow(const int row) { mCaretRow = row; const int sz = static_cast<int>(mTextRows.size()); if (mCaretRow >= sz) mCaretRow = sz - 1; if (mCaretRow < 0) mCaretRow = 0; setCaretColumn(mCaretColumn); } unsigned int TextBox::getCaretPosition() const { int pos = 0, row; for (row = 0; row < mCaretRow; row++) pos += static_cast<int>(mTextRows[row].size()); return pos + mCaretColumn; } void TextBox::setCaretColumn(const int column) { mCaretColumn = column; const int sz = static_cast<int>(mTextRows[mCaretRow].size()); if (mCaretColumn > sz) mCaretColumn = sz; if (mCaretColumn < 0) mCaretColumn = 0; } void TextBox::setCaretRowColumn(const int row, const int column) { setCaretRow(row); setCaretColumn(column); } void TextBox::scrollToCaret() { Rect scroll; Font *const font = getFont(); scroll.x = font->getWidth( mTextRows[mCaretRow].substr(0, mCaretColumn)); scroll.y = font->getHeight() * mCaretRow; scroll.width = font->getWidth(" "); // add 2 for some extra space scroll.height = font->getHeight() + 2; showPart(scroll); } void TextBox::addRow(const std::string &row) { mTextRows.push_back(row); adjustSize(); } void TextBox::mousePressed(MouseEvent& mouseEvent) { if (mouseEvent.getButton() == MouseEvent::LEFT) { const int height = getFont()->getHeight(); if (!height) return; mCaretRow = mouseEvent.getY() / height; const int sz = static_cast<int>(mTextRows.size()); if (mCaretRow >= sz) mCaretRow = sz - 1; mCaretColumn = getFont()->getStringIndexAt( mTextRows[mCaretRow], mouseEvent.getX()); } } void TextBox::mouseDragged(MouseEvent& mouseEvent) { mouseEvent.consume(); } void TextBox::drawCaret(Graphics *const graphics, const int x, const int y) { graphics->setColor(mForegroundColor); graphics->drawLine(x, getFont()->getHeight() + y, x, y); } void TextBox::adjustSize() { int width = 0; Font *const font = getFont(); for (size_t i = 0, sz = mTextRows.size(); i < sz; ++i) { const int w = font->getWidth(mTextRows[i]); if (width < w) width = w; } setWidth(width + 1); setHeight(static_cast<int>(font->getHeight() * mTextRows.size())); }