workspace/kscreensaver/kblank_screensaver/blankscrn.cpp

   1 //-----------------------------------------------------------------------------
   2 //
   3 // kblankscrn - Basic screen saver for KDE
   4 //
   5 // Copyright (c)  Martin R. Jones 1996
   6 //
   7 // 1998/04/19 Layout management added by Mario Weilguni <mweilguni@kde.org>
   8 // 2001/03/04 Converted to use libkscreensaver by Martin R. Jones
   9 // 2006/03/12 Ported to KScreenSaverInterface by David Faure
  10
  11 #include <stdlib.h>
  12 #include <QLabel>
  13 #include <QLayout>
  14 #include <QFrame>
  15 #include <QGridLayout>
  16 #include <kapplication.h>
  17 #include <klocale.h>
  18 #include <kconfig.h>
  19 #include <kcolordialog.h>
  20 #include <kcolorbutton.h>
  21 #include <kglobal.h>
  22 #include "blankscrn.h"
  23 #include <kaboutdata.h>
  24 #include <kdeversion.h>
  25 #include "blankscrn.moc"
  26
  27 // libkscreensaver interface
  28 class KBlankSaverInterface : public KScreenSaverInterface
  29 {
  30 public:
  31     virtual KAboutData* aboutData()
  32     {
  33         return new KAboutData( "kblankscrn.kss", 0, ki18n( "KBlankScreen" ),
  34                                KDE_VERSION_STRING, ki18n( "Blank Screen Saver" ) );
  35     }
  36
  37     virtual KScreenSaver* create( WId id )
  38     {
  39         return new KBlankSaver( id );
  40     }
  41
  42     virtual QDialog* setup()
  43     {
  44         return new KBlankSetup();
  45     }
  46 };
  47
  48 int main( int argc, char *argv[] )
  49 {
  50     KBlankSaverInterface kss;
  51     return kScreenSaverMain( argc, argv, kss );
  52 }
  53
  54 //-----------------------------------------------------------------------------
  55 // dialog to setup screen saver parameters
  56 //
  57 KBlankSetup::KBlankSetup( QWidget *parent, const char *name )
  58         : KDialog( parent )
  59 {
  60   setObjectName( name );
  61   setModal( true );
  62   setCaption( i18n( "Setup Blank Screen Saver" ) );
  63   setButtons( Ok | Cancel );
  64   showButtonSeparator( true );
  65
  66         readSettings();
  67
  68         QFrame *main = new QFrame( this );
  69   setMainWidget( main );
  70         QGridLayout *grid = new QGridLayout(main);
  71         grid->setSpacing(spacingHint());
  72         grid->setMargin(0);
  73
  74         QLabel *label = new QLabel( i18n("Color:"), main );
  75         grid->addWidget(label, 0, 0);
  76
  77         KColorButton *colorPush = new KColorButton( color, main );
  78         colorPush->setMinimumWidth(80);
  79         connect( colorPush, SIGNAL( changed(const QColor &) ),
  80                 SLOT( slotColor(const QColor &) ) );
  81         grid->addWidget(colorPush, 1, 0);
  82
  83         preview = new QWidget( main );
  84         preview->setFixedSize( 220, 165 );
  85         QPalette palette;
  86         palette.setColor( preview->backgroundRole(), Qt::black );
  87         preview->setPalette(palette);
  88         preview->show();    // otherwise saver does not get correct size
  89         saver = new KBlankSaver( preview->winId() );
  90         grid->addWidget(preview, 0, 1, 3, 1);
  91
  92         grid->setRowStretch( 2, 10 );
  93         grid->setRowStretch( 3, 20 );
  94
  95         setMinimumSize( sizeHint() );
  96         connect(this,SIGNAL(okClicked()),this,SLOT(slotOk()));
  97 }
  98
  99 // read settings from config file
 100 void KBlankSetup::readSettings()
 101 {
 102         KConfigGroup config(KGlobal::config(), "Settings");
 103
 104         QColor aux = Qt::black;
 105         color = config.readEntry( "Color", aux );
 106 }
 107
 108 void KBlankSetup::slotColor( const QColor &col )
 109 {
 110     color = col;
 111     saver->setColor( color );
 112 }
 113
 114 // Ok pressed - save settings and exit
 115 void KBlankSetup::slotOk()
 116 {
 117         KConfigGroup config(KGlobal::config(), "Settings");
 118         config.writeEntry( "Color", color );
 119   config.sync();
 120
 121         accept();
 122 }
 123
 124 //-----------------------------------------------------------------------------
 125
 126
 127 KBlankSaver::KBlankSaver( WId id ) : KScreenSaver( id )
 128 {
 129         readSettings();
 130         blank();
 131 }
 132
 133 KBlankSaver::~KBlankSaver()
 134 {
 135 }
 136
 137 // set the color
 138 void KBlankSaver::setColor( const QColor &col )
 139 {
 140         color = col;
 141         blank();
 142 }
 143
 144 // read configuration settings from config file
 145 void KBlankSaver::readSettings()
 146 {
 147         KConfigGroup config(KGlobal::config(), "Settings");
 148
 149         QColor aux = Qt::black;
 150         color = config.readEntry( "Color", aux );
 151 }
 152
 153 void KBlankSaver::blank()
 154 {
 155         QPalette palette;
 156         palette.setColor( backgroundRole(), color );
 157         setPalette(palette);
 158 }
 159