FIFE  2008.0
togglebutton.cpp
00001 /***************************************************************************
00002  *   Copyright (C) 2005-2008 by the FIFE team                              *
00003  *   http://www.fifengine.de                                               *
00004  *   This file is part of FIFE.                                            *
00005  *                                                                         *
00006  *   FIFE is free software; you can redistribute it and/or                 *
00007  *   modify it under the terms of the GNU Lesser General Public            *
00008  *   License as published by the Free Software Foundation; either          *
00009  *   version 2.1 of the License, or (at your option) any later version.    *
00010  *                                                                         *
00011  *   This library is distributed in the hope that it will be useful,       *
00012  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
00013  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
00014  *   Lesser General Public License for more details.                       *
00015  *                                                                         *
00016  *   You should have received a copy of the GNU Lesser General Public      *
00017  *   License along with this library; if not, write to the                 *
00018  *   Free Software Foundation, Inc.,                                       *
00019  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
00020  ***************************************************************************/
00021 /***************************************************************************
00022  * Note! Group and groupmap borrows heavily from ideas of Guichan library  *
00023  * version 0.8.1                                                           *
00024  ***************************************************************************/
00025 
00026 
00027 
00028 // Standard C++ library includes
00029 #include <cassert>
00030 
00031 // 3rd party library includes
00032 
00033 // FIFE includes
00034 // These includes are split up in two parts, separated by one empty line
00035 // First block: files included from the FIFE root src directory
00036 // Second block: files included from the same folder
00037 #include <iostream>
00038 
00039 #include <guichan/mouseevent.hpp>
00040 
00041 #include "togglebutton.h"
00042 
00043 
00044 namespace gcn {
00045     ToggleButton::GroupMap ToggleButton::m_groupMap;
00046 
00047     ToggleButton::ToggleButton(Image *up_file , Image *down_file, Image *hover_file, const std::string& caption, const std::string& group): 
00048         Button(),
00049         m_upImage(up_file),
00050         m_downImage(down_file),
00051         m_hoverImage(hover_file),
00052         x_downoffset(0),
00053         y_downoffset(0),
00054         m_group(group) {
00055 
00056         m_hoverImage = hover_file;
00057         setFrameSize(0);
00058         setGroup(m_group);
00059         adjustSize();
00060         mCaption = caption;
00061         m_toggled = false;
00062 
00063         addActionListener(this);
00064     }
00065     
00066     ToggleButton::~ToggleButton() {
00067         setGroup(""); // Remove button from group
00068     }
00069     
00070     void ToggleButton::setDownOffset(int x, int y) {
00071         x_downoffset = x;
00072         y_downoffset = y;
00073     }
00074     
00075     void ToggleButton::draw(Graphics *graphics) {
00076         Color faceColor = getBaseColor();
00077         Color highlightColor;
00078         Color shadowColor;
00079         int alpha = getBaseColor().a;
00080 
00081         Image* img = NULL;
00082         int xoffset = 0;
00083         int yoffset = 0;
00084         
00085         if (isPressed() || m_toggled) {
00086             faceColor = faceColor - 0x303030;
00087             faceColor.a = alpha;
00088             highlightColor = faceColor - 0x303030;
00089             highlightColor.a = alpha;
00090             shadowColor = faceColor + 0x303030;
00091             shadowColor.a = alpha;
00092 
00093             if( m_downImage ) {
00094                 img = m_downImage;
00095                 xoffset = x_downoffset;
00096                 yoffset = y_downoffset;
00097             }
00098         } else if(mHasMouse) {
00099             faceColor = faceColor + 0x303030;
00100             faceColor.a = alpha;
00101             highlightColor = faceColor + 0x303030;
00102             highlightColor.a = alpha;
00103             shadowColor = faceColor - 0x303030;
00104             shadowColor.a = alpha;
00105 
00106             if ( m_hoverImage ) {
00107                 img = m_hoverImage;
00108             }
00109         } else{
00110             highlightColor = faceColor + 0x303030;
00111             highlightColor.a = alpha;
00112             shadowColor = faceColor - 0x303030;
00113             shadowColor.a = alpha;
00114 
00115             if (m_upImage) {
00116                 img = m_upImage;
00117             }
00118         }
00119         
00120 
00121         graphics->setColor(faceColor);
00122         graphics->fillRectangle(Rectangle(1, 1, getDimension().width-1, getHeight() - 1));
00123 
00124         graphics->setColor(highlightColor);
00125         graphics->drawLine(0, 0, getWidth() - 1, 0);
00126         graphics->drawLine(0, 1, 0, getHeight() - 1);
00127 
00128         graphics->setColor(shadowColor);
00129         graphics->drawLine(getWidth() - 1, 1, getWidth() - 1, getHeight() - 1);
00130         graphics->drawLine(1, getHeight() - 1, getWidth() - 1, getHeight() - 1);
00131 
00132         graphics->setColor(getForegroundColor());
00133 
00134         if (img) {
00135             graphics->drawImage(img, xoffset, yoffset);
00136         }
00137 
00138         int textX;
00139         int textY = getHeight() / 2 - getFont()->getHeight() / 2;
00140         switch (getAlignment())
00141         {
00142             case Graphics::LEFT:
00143                 textX = 4;
00144                 break;
00145             case Graphics::CENTER:
00146                 textX = getWidth() / 2;
00147                 break;
00148             case Graphics::RIGHT:
00149                 textX = getWidth() - 4;
00150                 break;
00151             default:
00152                 throw GCN_EXCEPTION("Unknown alignment.");
00153         }
00154 
00155         graphics->setFont(getFont());
00156         if (mCaption.size() > 0) {
00157             if (isPressed())
00158                 graphics->drawText(getCaption(), textX + 1, 
00159                         textY + 1, getAlignment());
00160             else
00161                 graphics->drawText(getCaption(), textX, textY, getAlignment());
00162         }
00163     }
00164 
00165     void ToggleButton::action(const ActionEvent& actionEvent) {
00166         setToggled(!m_toggled);
00167     }
00168 
00169     void ToggleButton::adjustSize() {
00170         int w = 0;
00171         int h = w;
00172         if( m_upImage ) {
00173             w = m_upImage->getWidth();
00174             h = m_upImage->getHeight();
00175         }
00176         if( m_downImage ) {
00177             w = std::max(m_downImage->getWidth(), w);
00178             h = std::max(m_downImage->getHeight(), h);
00179         }
00180         if( m_hoverImage ) {
00181             w = std::max(m_hoverImage->getWidth(), w);
00182             h = std::max(m_hoverImage->getHeight(), h);
00183         }
00184 
00185         if( mCaption.length() > 0 ) {
00186             w = std::max(static_cast<int>(getFont()->getWidth(mCaption)+2*mSpacing), w);
00187             h = std::max(static_cast<int>(getFont()->getHeight()+2*mSpacing), h);
00188         }
00189 
00190         setWidth(w);
00191         setHeight(h);
00192     }
00193 
00194     void ToggleButton::setUpImage(Image* image) {
00195         m_upImage = image;
00196         adjustSize();
00197     }
00198 
00199     void ToggleButton::setDownImage(Image* image) {
00200         m_downImage = image;
00201         adjustSize();
00202     }
00203 
00204     void ToggleButton::setHoverImage(Image* image) {
00205         m_hoverImage = image;
00206         adjustSize();
00207     }
00208 
00209     bool ToggleButton::isToggled() const {
00210         return m_toggled;
00211     }
00212 
00213     void ToggleButton::setToggled(bool toggled) {
00214         if (toggled && m_group != "") {
00215             // untoggle all buttons in group
00216             GroupIterator iter, iterEnd;
00217             iterEnd = m_groupMap.upper_bound(m_group);
00218 
00219             for (iter = m_groupMap.lower_bound(m_group); iter != iterEnd; iter++) {
00220                 if (iter->second->isToggled()) {
00221                     iter->second->setToggled(false);
00222                 }
00223             }
00224         }
00225 
00226         m_toggled = toggled;
00227     }
00228 
00229     void ToggleButton::setGroup(const std::string &group) {
00230         // Remove button from previous group
00231         if (m_group != "") {
00232             GroupIterator iter, iterEnd;
00233             iterEnd = m_groupMap.upper_bound(m_group);
00234 
00235             for (iter = m_groupMap.lower_bound(m_group); iter != iterEnd; iter++) {
00236                 if (iter->second == this) {
00237                     m_groupMap.erase(iter);
00238                     break;
00239                 }
00240             }
00241         }
00242 
00243         // Add button to new group
00244         if (group != "") {
00245             m_groupMap.insert( std::pair<std::string, ToggleButton *>(group, this));
00246         }
00247 
00248         m_group = group;
00249     }
00250 
00251     const std::string &ToggleButton::getGroup() const {
00252         return m_group;
00253     }
00254 
00255     int ToggleButton::getDownXOffset() const { 
00256         return x_downoffset; 
00257     }
00258     
00259     int ToggleButton::getDownYOffset() const { 
00260         return y_downoffset; 
00261     }
00262 
00263 }
00264 /* vim: set noexpandtab: set shiftwidth=2: set tabstop=2: */
00265