KDEUI

kpushbutton.cpp

00001 /* This file is part of the KDE libraries
00002     Copyright (C) 2000 Carsten Pfeiffer <pfeiffer@kde.org>
00003 
00004     This library is free software; you can redistribute it and/or
00005     modify it under the terms of the GNU Library General Public
00006     License as published by the Free Software Foundation; either
00007     version 2 of the License, or (at your option) any later version.
00008 
00009     This library is distributed in the hope that it will be useful,
00010     but WITHOUT ANY WARRANTY; without even the implied warranty of
00011     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00012     Library General Public License for more details.
00013 
00014     You should have received a copy of the GNU Library General Public License
00015     along with this library; see the file COPYING.LIB.  If not, write to
00016     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00017     Boston, MA 02110-1301, USA.
00018 */
00019 
00020 #include "kpushbutton.h"
00021 #include <QStyleOptionToolButton>
00022 #include <QStylePainter>
00023 
00024 #include <QtGui/QDrag>
00025 #include <QtGui/QActionEvent>
00026 #include <QtGui/QMenu>
00027 #include <QtCore/QPointer>
00028 #include <QtGui/QStyle>
00029 #include <QtCore/QTimer>
00030 
00031 #include <config.h>
00032 
00033 #include <kconfig.h>
00034 #include <kglobal.h>
00035 #include <kglobalsettings.h>
00036 #include <kguiitem.h>
00037 #include <kicon.h>
00038 
00039 #include "auth/kauthaction.h"
00040 #include "auth/kauthactionwatcher.h"
00041 
00042 static bool s_useIcons = false;
00043 
00044 class KPushButton::KPushButtonPrivate
00045 {
00046 public:
00047     KPushButtonPrivate(KPushButton *_parent) : parent(_parent), m_dragEnabled( false ), authAction(0)
00048     {
00049     }
00050 
00051     KPushButton *parent;
00052 
00053     KGuiItem item;
00054     KStandardGuiItem::StandardItem itemType;
00055     QPointer<QMenu> delayedMenu;
00056     QTimer * delayedMenuTimer;
00057     bool m_dragEnabled;
00058     QPoint startPos;
00059     KAuth::Action *authAction;
00060     // TODO: Remove whenever QIcon overlays will get fixed
00061     KIcon oldIcon;
00062 
00063     void slotSettingsChanged( int );
00064     void slotPressedInternal();
00065     void slotClickedInternal();
00066     void authStatusChanged(int status);
00067     void slotDelayedMenuTimeout();
00068     void readSettings();
00069 };
00070 
00071 void KPushButton::KPushButtonPrivate::slotSettingsChanged( int /* category */ )
00072 {
00073     readSettings();
00074     parent->setIcon( item.icon() );
00075 }
00076 
00077 void KPushButton::KPushButtonPrivate::slotPressedInternal()
00078 {
00079     if (!delayedMenu.isNull()) {
00080         if (delayedMenuTimer==0) {
00081             delayedMenuTimer=new QTimer(parent);
00082             delayedMenuTimer->setSingleShot(true);
00083             connect(delayedMenuTimer,SIGNAL(timeout()),parent,SLOT(slotDelayedMenuTimeout()));
00084         }
00085         const int delay=parent->style()->styleHint(QStyle::SH_ToolButton_PopupDelay, 0, parent);
00086         delayedMenuTimer->start((delay<=0) ? 150:delay);
00087     }
00088 }
00089 
00090 void KPushButton::KPushButtonPrivate::slotClickedInternal()
00091 {
00092     if (delayedMenuTimer)
00093         delayedMenuTimer->stop();
00094 
00095     if (authAction) {
00096         KAuth::Action::AuthStatus s = authAction->authorize();
00097         switch(s) {
00098         case KAuth::Action::Denied:
00099             parent->setEnabled(false);
00100             break;
00101         case KAuth::Action::Authorized:
00102             emit parent->authorized(authAction);
00103             break;
00104         default:
00105             break;
00106         }
00107     }
00108 }
00109 
00110 void KPushButton::KPushButtonPrivate::slotDelayedMenuTimeout() {
00111     delayedMenuTimer->stop();
00112     if (!delayedMenu.isNull()) {
00113         parent->setMenu(delayedMenu);
00114         parent->showMenu();
00115         parent->setMenu(0);
00116     }
00117 }
00118 
00119 void KPushButton::KPushButtonPrivate::authStatusChanged(int status)
00120 {
00121     KAuth::Action::AuthStatus s = (KAuth::Action::AuthStatus)status;
00122 
00123     switch(s) {
00124         case KAuth::Action::Authorized:
00125             parent->setEnabled(true);
00126             if(!oldIcon.isNull()) {
00127                 parent->setIcon(oldIcon);
00128                 oldIcon = KIcon();
00129             }
00130             break;
00131         case KAuth::Action::AuthRequired:
00132             parent->setEnabled(true);
00133             oldIcon = KIcon(parent->icon());
00134             parent->setIcon(KIcon("dialog-password"));
00135             break;
00136         default:
00137             parent->setEnabled(false);
00138             if(!oldIcon.isNull()) {
00139                 parent->setIcon(oldIcon);
00140                 oldIcon = KIcon();
00141             }
00142     }
00143 }
00144 
00145 void KPushButton::KPushButtonPrivate::readSettings()
00146 {
00147     s_useIcons = KGlobalSettings::showIconsOnPushButtons();
00148 }
00149 
00150 
00151 
00152 KPushButton::KPushButton( QWidget *parent )
00153     : QPushButton( parent ), d( new KPushButtonPrivate(this) )
00154 {
00155     init( KGuiItem( "" ) );
00156 }
00157 
00158 KPushButton::KPushButton( const QString &text, QWidget *parent )
00159     : QPushButton( parent ), d( new KPushButtonPrivate(this) )
00160 {
00161     init( KGuiItem( text ) );
00162 }
00163 
00164 KPushButton::KPushButton( const KIcon &icon, const QString &text,
00165                           QWidget *parent )
00166     : QPushButton( text, parent ), d( new KPushButtonPrivate(this) )
00167 {
00168     init( KGuiItem( text, icon ) );
00169 }
00170 
00171 KPushButton::KPushButton( const KGuiItem &item, QWidget *parent )
00172     : QPushButton( parent ), d( new KPushButtonPrivate(this) )
00173 {
00174     init( item );
00175 }
00176 
00177 KPushButton::~KPushButton()
00178 {
00179     delete d;
00180 }
00181 
00182 void KPushButton::init( const KGuiItem &item )
00183 {
00184     d->item = item;
00185     d->itemType = (KStandardGuiItem::StandardItem) 0;
00186     d->delayedMenuTimer=0;
00187 
00188     connect(this,SIGNAL(pressed()), this, SLOT(slotPressedInternal()));
00189     connect(this,SIGNAL(clicked()), this, SLOT(slotClickedInternal()));
00190     // call QPushButton's implementation since we don't need to
00191     // set the GUI items text or check the state of the icon set
00192     QPushButton::setText( d->item.text() );
00193 
00194     static bool initialized = false;
00195     if ( !initialized ) {
00196         d->readSettings();
00197         initialized = true;
00198     }
00199 
00200     setIcon( d->item.icon() );
00201 
00202     setToolTip( item.toolTip() );
00203 
00204     setWhatsThis(item.whatsThis());
00205 
00206     connect( KGlobalSettings::self(), SIGNAL( settingsChanged(int) ),
00207              SLOT( slotSettingsChanged(int) ) );
00208 }
00209 
00210 bool KPushButton::isDragEnabled() const
00211 {
00212     return d->m_dragEnabled;
00213 }
00214 
00215 void KPushButton::setGuiItem( const KGuiItem& item )
00216 {
00217     d->item = item;
00218 
00219     // call QPushButton's implementation since we don't need to
00220     // set the GUI items text or check the state of the icon set
00221     QPushButton::setText( d->item.text() );
00222     setIcon( d->item.icon() );
00223     setToolTip( d->item.toolTip() );
00224     setEnabled( d->item.isEnabled() );
00225     setWhatsThis( d->item.whatsThis() );
00226 }
00227 
00228 void KPushButton::setGuiItem( KStandardGuiItem::StandardItem item )
00229 {
00230     setGuiItem( KStandardGuiItem::guiItem(item) );
00231     d->itemType = item;
00232 }
00233 
00234 KStandardGuiItem::StandardItem KPushButton::guiItem() const
00235 {
00236     return d->itemType;
00237 }
00238 
00239 void KPushButton::setText( const QString &text )
00240 {
00241     QPushButton::setText(text);
00242 
00243     // we need to re-evaluate the icon set when the text
00244     // is removed, or when it is supplied
00245     if (text.isEmpty() != d->item.text().isEmpty())
00246         setIcon(d->item.icon());
00247 
00248     d->item.setText(text);
00249 }
00250 
00251 void KPushButton::setIcon( const KIcon &icon )
00252 {
00253     d->item.setIcon(icon);
00254 
00255     if ( s_useIcons || text().isEmpty() )
00256         QPushButton::setIcon( icon );
00257     else
00258         QPushButton::setIcon( QIcon() );
00259 }
00260 
00261 void KPushButton::setIcon( const QIcon &qicon )
00262 {
00263     d->item.setIcon(KIcon(qicon));
00264 }
00265 
00266 void KPushButton::setDragEnabled( bool enable )
00267 {
00268     d->m_dragEnabled = enable;
00269 }
00270 
00271 void KPushButton::mousePressEvent( QMouseEvent *e )
00272 {
00273     if ( d->m_dragEnabled )
00274         d->startPos = e->pos();
00275     QPushButton::mousePressEvent( e );
00276 }
00277 
00278 void KPushButton::mouseMoveEvent( QMouseEvent *e )
00279 {
00280     if ( !d->m_dragEnabled )
00281     {
00282         QPushButton::mouseMoveEvent( e );
00283         return;
00284     }
00285 
00286     if ( (e->buttons() & Qt::LeftButton) &&
00287          (e->pos() - d->startPos).manhattanLength() >
00288          KGlobalSettings::dndEventDelay() )
00289     {
00290         startDrag();
00291         setDown( false );
00292     }
00293 }
00294 
00295 QDrag * KPushButton::dragObject()
00296 {
00297     return 0;
00298 }
00299 
00300 void KPushButton::startDrag()
00301 {
00302     QDrag *d = dragObject();
00303     if ( d )
00304         d->start();
00305 }
00306 
00307 void KPushButton::setDelayedMenu(QMenu *delayedMenu)
00308 {
00309     d->delayedMenu=delayedMenu;
00310 }
00311 
00312 QMenu* KPushButton::delayedMenu()
00313 {
00314     return d->delayedMenu;
00315 }
00316 
00317 KAuth::Action *KPushButton::authAction() const
00318 {
00319     return d->authAction;
00320 }
00321 
00322 void KPushButton::setAuthAction(const QString &actionName)
00323 {
00324     if (actionName.isEmpty()) {
00325         setAuthAction(0);
00326     } else {
00327         setAuthAction(new KAuth::Action(actionName));
00328     }
00329 }
00330 
00331 void KPushButton::setAuthAction(KAuth::Action *action)
00332 {
00333     if (d->authAction == action) {
00334         return;
00335     }
00336 
00337     if (d->authAction) {
00338         disconnect(d->authAction->watcher(), SIGNAL(statusChanged(int)),
00339                 this, SLOT(authStatusChanged(int)));
00340         //delete d->authAction;
00341         d->authAction = 0;
00342         if (!d->oldIcon.isNull()) {
00343             setIcon(d->oldIcon);
00344             d->oldIcon = KIcon();
00345         }
00346     }
00347 
00348     if (action != 0) {
00349         d->authAction = action;
00350         connect(d->authAction->watcher(), SIGNAL(statusChanged(int)),
00351                 this, SLOT(authStatusChanged(int)));
00352         d->authStatusChanged(d->authAction->status());
00353     }
00354 }
00355 
00356 QSize KPushButton::sizeHint() const
00357 {
00358     const bool tempSetMenu = !menu() && d->delayedMenu;
00359     if (tempSetMenu)
00360         const_cast<KPushButton *>(this)->setMenu(d->delayedMenu);
00361     const QSize sz = QPushButton::sizeHint();
00362     if (tempSetMenu)
00363         const_cast<KPushButton *>(this)->setMenu(0);
00364     return sz;
00365 }
00366 
00367 void KPushButton::paintEvent( QPaintEvent * )
00368 {
00369     QStylePainter p(this);
00370     QStyleOptionButton option;
00371     initStyleOption(&option);
00372     
00373     if (d->delayedMenu)
00374         option.features |= QStyleOptionButton::HasMenu;
00375 
00376     p.drawControl(QStyle::CE_PushButton, option);
00377 }
00378 
00379 #include "kpushbutton.moc"
KDEUI

kpushbutton.cpp

KDEUI

kdelibs
