radiobutton.cpp

00001 /*      _______   __   __   __   ______   __   __   _______   __   __
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00008  *
00009  * Copyright (c) 2004, 2005, 2006 Olof Naessén and Per Larsson
00010  *
00011  *                                                         Js_./
00012  * Per Larsson a.k.a finalman                          _RqZ{a<^_aa
00013  * Olof Naessén a.k.a jansem/yakslem                _asww7!uY`>  )\a//
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00056 
00057 /*
00058  * For comments regarding functions please see the header file.
00059  */
00060 
00061 #include "guichan/widgets/radiobutton.hpp"
00062 
00063 #include "guichan/font.hpp"
00064 #include "guichan/graphics.hpp"
00065 #include "guichan/key.hpp"
00066 #include "guichan/mouseinput.hpp"
00067 
00068 namespace gcn
00069 {
00070     RadioButton::GroupMap RadioButton::mGroupMap;
00071 
00072     RadioButton::RadioButton()
00073     {
00074         setMarked(false);
00075 
00076         setFocusable(true);
00077         addMouseListener(this);
00078         addKeyListener(this);
00079     }
00080 
00081     RadioButton::RadioButton(const std::string &caption,
00082                              const std::string &group,
00083                              bool marked)
00084     {
00085         setCaption(caption);
00086         setGroup(group);
00087         setMarked(marked);
00088 
00089         setFocusable(true);
00090         addMouseListener(this);
00091         addKeyListener(this);
00092 
00093         adjustSize();
00094     }
00095 
00096     RadioButton::~RadioButton()
00097     {
00098         // Remove us from the group list
00099         setGroup("");
00100     }
00101 
00102     void RadioButton::draw(Graphics* graphics)
00103     {
00104         drawBox(graphics);
00105 
00106         graphics->setFont(getFont());
00107         graphics->setColor(getForegroundColor());
00108 
00109         int h = getHeight() + getHeight() / 2;
00110 
00111         graphics->drawText(getCaption(), h - 2, 0);
00112 
00113         if (isFocused())
00114         {
00115             graphics->drawRectangle(Rectangle(h - 4, 0, getWidth() - h + 3, getHeight()));
00116         }
00117     }
00118 
00119     void RadioButton::drawBorder(Graphics* graphics)
00120     {
00121         Color faceColor = getBaseColor();
00122         Color highlightColor, shadowColor;
00123         int alpha = getBaseColor().a;
00124         int width = getWidth() + getBorderSize() * 2 - 1;
00125         int height = getHeight() + getBorderSize() * 2 - 1;
00126         highlightColor = faceColor + 0x303030;
00127         highlightColor.a = alpha;
00128         shadowColor = faceColor - 0x303030;
00129         shadowColor.a = alpha;
00130 
00131         unsigned int i;
00132         for (i = 0; i < getBorderSize(); ++i)
00133         {
00134             graphics->setColor(shadowColor);
00135             graphics->drawLine(i,i, width - i, i);
00136             graphics->drawLine(i,i + 1, i, height - i - 1);
00137             graphics->setColor(highlightColor);
00138             graphics->drawLine(width - i,i + 1, width - i, height - i);
00139             graphics->drawLine(i,height - i, width - i - 1, height - i);
00140         }
00141     }
00142 
00143     void RadioButton::drawBox(Graphics *graphics)
00144     {
00145         int h;
00146 
00147         if (getHeight()%2 == 0)
00148         {
00149             h = getHeight() - 2;
00150         }
00151         else
00152         {
00153             h = getHeight() - 1;
00154         }
00155 
00156         int alpha = getBaseColor().a;
00157         Color faceColor = getBaseColor();
00158         faceColor.a = alpha;
00159         Color highlightColor = faceColor + 0x303030;
00160         highlightColor.a = alpha;
00161         Color shadowColor = faceColor - 0x303030;
00162         shadowColor.a = alpha;
00163 
00164         graphics->setColor(getBackgroundColor());
00165 
00166         int i;
00167         int hh = (h + 1) / 2;
00168 
00169         for (i = 1; i <= hh; ++i)
00170         {
00171             graphics->drawLine(hh - i + 1,
00172                                i,
00173                                hh + i - 1,
00174                                i);
00175         }
00176 
00177         for (i = 1; i < hh; ++i)
00178         {
00179             graphics->drawLine(hh - i + 1,
00180                                h - i,
00181                                hh + i - 1,
00182                                h - i);
00183         }
00184 
00185         graphics->setColor(shadowColor);
00186         graphics->drawLine(hh, 0, 0, hh);
00187         graphics->drawLine(hh + 1, 1, h - 1, hh - 1);
00188 
00189         graphics->setColor(highlightColor);
00190         graphics->drawLine(1, hh + 1, hh, h);
00191         graphics->drawLine(hh + 1, h - 1, h, hh);
00192 
00193         graphics->setColor(getForegroundColor());
00194 
00195         int hhh = hh - 3;
00196         if (isMarked())
00197         {
00198             for (i = 0; i < hhh; ++i)
00199             {
00200                 graphics->drawLine(hh - i, 4 + i, hh + i, 4 + i);
00201             }
00202             for (i = 0; i < hhh; ++i)
00203             {
00204                 graphics->drawLine(hh - i, h - 4 - i, hh + i, h - 4 -  i);
00205             }
00206 
00207         }
00208     }
00209 
00210     bool RadioButton::isMarked() const
00211     {
00212         return mMarked;
00213     }
00214 
00215     void RadioButton::setMarked(bool marked)
00216     {
00217         if (marked && mGroup != "")
00218         {
00219             GroupIterator iter, iterEnd;
00220             iterEnd = mGroupMap.upper_bound(mGroup);
00221 
00222             for (iter = mGroupMap.lower_bound(mGroup);
00223                  iter != iterEnd;
00224                  iter++)
00225             {
00226                 if (iter->second->isMarked())
00227                 {
00228                     iter->second->setMarked(false);
00229                 }
00230             }
00231         }
00232 
00233         mMarked = marked;
00234     }
00235 
00236     const std::string &RadioButton::getCaption() const
00237     {
00238         return mCaption;
00239     }
00240 
00241     void RadioButton::setCaption(const std::string caption)
00242     {
00243         mCaption = caption;
00244     }
00245 
00246     void RadioButton::keyPress(const Key& key)
00247     {
00248         if (key.getValue() == Key::ENTER ||
00249             key.getValue() == Key::SPACE)
00250         {
00251             setMarked(true);
00252             generateAction();
00253         }
00254     }
00255 
00256     void RadioButton::mouseClick(int x, int y, int button, int count)
00257     {
00258         if (button == MouseInput::LEFT)
00259         {
00260             setMarked(true);
00261             generateAction();
00262         }
00263     }
00264 
00265     void RadioButton::setGroup(const std::string &group)
00266     {
00267         if (mGroup != "")
00268         {
00269             GroupIterator iter, iterEnd;
00270             iterEnd = mGroupMap.upper_bound(mGroup);
00271 
00272             for (iter = mGroupMap.lower_bound(mGroup);
00273                  iter != iterEnd;
00274                  iter++)
00275             {
00276                 if (iter->second == this)
00277                 {
00278                     mGroupMap.erase(iter);
00279                     break;
00280                 }
00281             }
00282         }
00283 
00284         if (group != "")
00285         {
00286             mGroupMap.insert(
00287                 std::pair<std::string, RadioButton *>(group, this));
00288         }
00289 
00290         mGroup = group;
00291     }
00292 
00293     const std::string &RadioButton::getGroup() const
00294     {
00295         return mGroup;
00296     }
00297 
00298     void RadioButton::adjustSize()
00299     {
00300         int height = getFont()->getHeight();
00301 
00302         setHeight(height);
00303         setWidth(getFont()->getWidth(getCaption()) + height + height/2);
00304     }
00305 }

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