/* * The ManaPlus Client * Copyright (C) 2004-2009 The Mana World Development Team * Copyright (C) 2009-2010 The Mana Developers * Copyright (C) 2011-2015 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/listbox.h" #include "settings.h" #include "input/inputaction.h" #include "listeners/selectionlistener.h" #include "gui/focushandler.h" #include "gui/gui.h" #include "gui/skin.h" #include "gui/fonts/font.h" #include "gui/models/listmodel.h" #include "debug.h" float ListBox::mAlpha = 1.0; ListBox::ListBox(const Widget2 *const widget, ListModel *const listModel, const std::string &skin) : Widget(widget), MouseListener(), KeyListener(), mSelected(-1), mListModel(listModel), mWrappingEnabled(false), mSelectionListeners(), mHighlightColor(getThemeColor(Theme::HIGHLIGHT)), mForegroundSelectedColor(getThemeColor(Theme::LISTBOX_SELECTED)), mForegroundSelectedColor2(getThemeColor(Theme::LISTBOX_SELECTED_OUTLINE)), mOldSelected(-1), mPadding(0), mPressedIndex(-2), mRowHeight(0), mItemPadding(1), mSkin(nullptr), mDistributeMousePressed(true), mCenterText(false) { setWidth(100); setFocusable(true); addMouseListener(this); addKeyListener(this); mForegroundColor = getThemeColor(Theme::LISTBOX); mForegroundColor2 = getThemeColor(Theme::LISTBOX_OUTLINE); if (theme) mSkin = theme->load(skin, "listbox.xml"); if (mSkin) { mPadding = mSkin->getPadding(); mItemPadding = mSkin->getOption("itemPadding"); } const Font *const font = getFont(); if (font) mRowHeight = font->getHeight() + 2 * mItemPadding; else mRowHeight = 13; } void ListBox::postInit() { adjustSize(); } ListBox::~ListBox() { if (gui) gui->removeDragged(this); if (theme) theme->unload(mSkin); } void ListBox::updateAlpha() { const float alpha = std::max(settings.guiAlpha, theme->getMinimumOpacity()); if (mAlpha != alpha) mAlpha = alpha; } void ListBox::draw(Graphics *graphics) { if (!mListModel) return; BLOCK_START("ListBox::draw") updateAlpha(); mHighlightColor.a = static_cast<int>(mAlpha * 255.0F); graphics->setColor(mHighlightColor); Font *const font = getFont(); const int rowHeight = getRowHeight(); const int width = mDimension.width; if (mCenterText) { // Draw filled rectangle around the selected list element if (mSelected >= 0) { graphics->fillRectangle(Rect(mPadding, rowHeight * mSelected + mPadding, mDimension.width - 2 * mPadding, rowHeight)); graphics->setColorAll(mForegroundSelectedColor, mForegroundSelectedColor2); const std::string str = mListModel->getElementAt(mSelected); font->drawString(graphics, str, (width - font->getWidth(str)) / 2, mSelected * rowHeight + mPadding + mItemPadding); } // Draw the list elements graphics->setColorAll(mForegroundColor, mForegroundColor2); const int sz = mListModel->getNumberOfElements(); for (int i = 0, y = mPadding + mItemPadding; i < sz; ++i, y += rowHeight) { if (i != mSelected) { const std::string str = mListModel->getElementAt(i); font->drawString(graphics, str, (width - font->getWidth(str)) / 2, y); } } } else { // Draw filled rectangle around the selected list element if (mSelected >= 0) { graphics->fillRectangle(Rect(mPadding, rowHeight * mSelected + mPadding, mDimension.width - 2 * mPadding, rowHeight)); graphics->setColorAll(mForegroundSelectedColor, mForegroundSelectedColor2); const std::string str = mListModel->getElementAt(mSelected); font->drawString(graphics, str, mPadding, mSelected * rowHeight + mPadding + mItemPadding); } // Draw the list elements graphics->setColorAll(mForegroundColor, mForegroundColor2); const int sz = mListModel->getNumberOfElements(); for (int i = 0, y = mPadding + mItemPadding; i < sz; ++i, y += rowHeight) { if (i != mSelected) { const std::string str = mListModel->getElementAt(i); font->drawString(graphics, str, mPadding, y); } } } BLOCK_END("ListBox::draw") } void ListBox::keyPressed(KeyEvent &event) { const int action = event.getActionId(); if (action == InputAction::GUI_SELECT) { distributeActionEvent(); event.consume(); } else if (action == InputAction::GUI_UP) { if (mSelected > 0) setSelected(mSelected - 1); else if (mSelected == 0 && mWrappingEnabled && getListModel()) setSelected(getListModel()->getNumberOfElements() - 1); event.consume(); } else if (action == InputAction::GUI_DOWN) { const int num = getListModel()->getNumberOfElements() - 1; if (mSelected < num) setSelected(mSelected + 1); else if (mSelected == num && mWrappingEnabled) setSelected(0); event.consume(); } else if (action == InputAction::GUI_HOME) { setSelected(0); event.consume(); } else if (action == InputAction::GUI_END && getListModel()) { setSelected(getListModel()->getNumberOfElements() - 1); event.consume(); } } // Don't do anything on scrollwheel. ScrollArea will deal with that. void ListBox::mouseWheelMovedUp(MouseEvent &event A_UNUSED) { } void ListBox::mouseWheelMovedDown(MouseEvent &event A_UNUSED) { } void ListBox::mousePressed(MouseEvent &event) { mPressedIndex = getSelectionByMouse(event.getY()); if (mMouseConsume && mPressedIndex != -1) event.consume(); } void ListBox::mouseReleased(MouseEvent &event) { if (mPressedIndex != getSelectionByMouse(event.getY())) return; if (mDistributeMousePressed) { mouseReleased1(event); } else { switch (event.getClickCount()) { case 1: mouseDragged(event); mOldSelected = mSelected; break; case 2: if (gui) gui->resetClickCount(); if (mOldSelected == mSelected) mouseReleased1(event); else mouseDragged(event); mOldSelected = mSelected; break; default: mouseDragged(event); mOldSelected = mSelected; break; } } mPressedIndex = -2; } void ListBox::mouseReleased1(const MouseEvent &event) { if (event.getButton() == MouseButton::LEFT) { setSelected(std::max(0, getSelectionByMouse(event.getY()))); distributeActionEvent(); } } void ListBox::mouseDragged(MouseEvent &event) { if (event.getButton() != MouseButton::LEFT || getRowHeight() == 0) return; // Make list selection update on drag, but guard against negative y if (getRowHeight()) setSelected(std::max(0, getSelectionByMouse(event.getY()))); } void ListBox::refocus() { if (!mFocusHandler) return; if (isFocusable()) mFocusHandler->requestFocus(this); } void ListBox::adjustSize() { BLOCK_START("ListBox::adjustSize") if (mListModel) { setHeight(getRowHeight() * mListModel->getNumberOfElements() + 2 * mPadding); } BLOCK_END("ListBox::adjustSize") } void ListBox::logic() { BLOCK_START("ListBox::logic") adjustSize(); BLOCK_END("ListBox::logic") } int ListBox::getSelectionByMouse(const int y) const { if (y < mPadding) return -1; return static_cast<unsigned int>(y - mPadding) / getRowHeight(); } void ListBox::setSelected(const int selected) { if (!mListModel) { mSelected = -1; } else { if (selected < 0) mSelected = -1; else if (selected >= mListModel->getNumberOfElements()) mSelected = mListModel->getNumberOfElements() - 1; else mSelected = selected; } Rect scroll; if (mSelected < 0) scroll.y = 0; else scroll.y = getRowHeight() * mSelected; scroll.height = getRowHeight(); showPart(scroll); distributeValueChangedEvent(); } void ListBox::setListModel(ListModel *const listModel) { mSelected = -1; mListModel = listModel; adjustSize(); } void ListBox::addSelectionListener(SelectionListener *const selectionListener) { mSelectionListeners.push_back(selectionListener); } void ListBox::removeSelectionListener(SelectionListener *const selectionListener) { mSelectionListeners.remove(selectionListener); } void ListBox::distributeValueChangedEvent() { FOR_EACH (SelectionListenerIterator, iter, mSelectionListeners) { SelectionEvent event(this); (*iter)->valueChanged(event); } }