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-rw-r--r--tdescreensaver/kdesavers/banner.cpp509
1 files changed, 509 insertions, 0 deletions
diff --git a/tdescreensaver/kdesavers/banner.cpp b/tdescreensaver/kdesavers/banner.cpp
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+++ b/tdescreensaver/kdesavers/banner.cpp
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+//-----------------------------------------------------------------------------
+//
+// kbanner - Basic screen saver for KDE
+//
+// Copyright (c) Martin R. Jones 1996
+//
+// layout management added 1998/04/19 by Mario Weilguni <mweilguni@kde.org>
+// clock function and color cycling added 2000/01/09 by Alexander Neundorf <alexander.neundorf@rz.tu-ilmenau.de>
+// 2001/03/04 Converted to use libtdescreensaver by Martin R. Jones
+// 2002/04/07 Added random vertical position of text,
+// changed horizontal step size to reduce jerkyness,
+// text will return to right margin immediately (and not be drawn half a screen width off-screen)
+// Harald H.-J. Bongartz <harald@bongartz.org>
+// 2003/09/06 Converted to use KDialogBase - Nadeem Hasan <nhasan@kde.org>
+#include <stdlib.h>
+
+#include <tqlabel.h>
+#include <tqlineedit.h>
+#include <tqcombobox.h>
+#include <tqcheckbox.h>
+#include <tqgroupbox.h>
+#include <tqslider.h>
+#include <tqlayout.h>
+#include <tqdatetime.h>
+#include <tqfontdatabase.h>
+#include <tqpainter.h>
+
+#include <kapplication.h>
+#include <krandomsequence.h>
+#include <kglobal.h>
+#include <klocale.h>
+#include <kconfig.h>
+#include <kmessagebox.h>
+#include <kcolorbutton.h>
+#include <kfontcombo.h>
+
+#include "banner.h"
+#include "banner.moc"
+
+// libtdescreensaver interface
+extern "C"
+{
+ KDE_EXPORT const char *kss_applicationName = "kbanner.kss";
+ KDE_EXPORT const char *kss_description = I18N_NOOP( "KBanner" );
+ KDE_EXPORT const char *kss_version = "2.2.0";
+
+ KDE_EXPORT KScreenSaver *kss_create( WId id )
+ {
+ return new KBannerSaver( id );
+ }
+
+ KDE_EXPORT TQDialog *kss_setup()
+ {
+ return new KBannerSetup();
+ }
+}
+
+//-----------------------------------------------------------------------------
+
+KBannerSetup::KBannerSetup( TQWidget *parent, const char *name )
+ : KDialogBase( parent, name, true, i18n( "Setup Banner Screen Saver" ),
+ Ok|Cancel|Help, Ok, true ), saver( 0 ), ed(0), speed( 50 )
+{
+ setButtonText( Help, i18n( "A&bout" ) );
+ readSettings();
+
+ TQWidget *main = makeMainWidget();
+
+ TQLabel *label;
+
+ TQVBoxLayout *tl = new TQVBoxLayout(main, 0, spacingHint());
+ TQHBoxLayout *tl1 = new TQHBoxLayout( 0, 0, spacingHint() );
+ tl->addLayout(tl1);
+ TQVBoxLayout *tl11 = new TQVBoxLayout( 0, 0, spacingHint() );
+ tl1->addLayout(tl11);
+
+ TQGroupBox *group = new TQGroupBox( 0,Qt::Vertical, i18n("Font"), main );
+ TQGridLayout *gl = new TQGridLayout(group->layout(), 6, 2, spacingHint() );
+
+ label = new TQLabel( i18n("Family:"), group );
+ gl->addWidget(label, 1, 0);
+
+ KFontCombo* comboFonts = new KFontCombo( TQFontDatabase().families(), group );
+ comboFonts->setCurrentFont( fontFamily );
+ gl->addWidget(comboFonts, 1, 1);
+ connect( comboFonts, TQT_SIGNAL( activated( const TQString& ) ),
+ TQT_SLOT( slotFamily( const TQString& ) ) );
+
+ label = new TQLabel( i18n("Size:"), group );
+ gl->addWidget(label, 2, 0);
+
+ comboSizes = new TQComboBox( TRUE, group );
+ fillFontSizes();
+ gl->addWidget(comboSizes, 2, 1);
+ connect( comboSizes, TQT_SIGNAL( activated( int ) ), TQT_SLOT( slotSize( int ) ) );
+ connect( comboSizes, TQT_SIGNAL( textChanged( const TQString & ) ),
+ TQT_SLOT( slotSizeEdit( const TQString & ) ) );
+
+ TQCheckBox *cb = new TQCheckBox( i18n("Bold"),
+ group );
+ cb->setChecked( bold );
+ connect( cb, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotBold( bool ) ) );
+ gl->addWidget(cb, 3, 0);
+
+ cb = new TQCheckBox( i18n("Italic"), group );
+ cb->setChecked( italic );
+ gl->addWidget(cb, 3, 1);
+ connect( cb, TQT_SIGNAL( toggled( bool ) ), TQT_SLOT( slotItalic( bool ) ) );
+
+ label = new TQLabel( i18n("Color:"), group );
+ gl->addWidget(label, 4, 0);
+
+ colorPush = new KColorButton( fontColor, group );
+ gl->addWidget(colorPush, 4, 1);
+ connect( colorPush, TQT_SIGNAL( changed(const TQColor &) ),
+ TQT_SLOT( slotColor(const TQColor &) ) );
+
+ TQCheckBox *cyclingColorCb=new TQCheckBox(i18n("Cycling color"),group);
+ cyclingColorCb->setMinimumSize(cyclingColorCb->sizeHint());
+ gl->addMultiCellWidget(cyclingColorCb,5,5,0,1);
+ connect(cyclingColorCb,TQT_SIGNAL(toggled(bool)),this,TQT_SLOT(slotCyclingColor(bool)));
+ cyclingColorCb->setChecked(cyclingColor);
+
+ preview = new TQWidget( main );
+ preview->setFixedSize( 220, 170 );
+ preview->setBackgroundColor( black );
+ preview->show(); // otherwise saver does not get correct size
+ saver = new KBannerSaver( preview->winId() );
+ tl1->addWidget(preview);
+
+ tl11->addWidget(group);
+
+ label = new TQLabel( i18n("Speed:"), main );
+ tl11->addStretch(1);
+ tl11->addWidget(label);
+
+ TQSlider *sb = new TQSlider(0, 100, 10, speed, Qt::Horizontal, main );
+ sb->setMinimumWidth( 180);
+ sb->setFixedHeight(20);
+ sb->setTickmarks(TQSlider::Below);
+ sb->setTickInterval(10);
+ tl11->addWidget(sb);
+ connect( sb, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotSpeed( int ) ) );
+
+ TQHBoxLayout *tl2 = new TQHBoxLayout;
+ tl->addLayout(tl2);
+
+ label = new TQLabel( i18n("Message:"), main );
+ tl2->addWidget(label);
+
+ ed = new TQLineEdit( main );
+ tl2->addWidget(ed);
+ ed->setText( message );
+ connect( ed, TQT_SIGNAL( textChanged( const TQString & ) ),
+ TQT_SLOT( slotMessage( const TQString & ) ) );
+
+ TQCheckBox *timeCb=new TQCheckBox( i18n("Show current time"), main);
+ timeCb->setFixedSize(timeCb->sizeHint());
+ tl->addWidget(timeCb,0,TQt::AlignLeft);
+ connect(timeCb,TQT_SIGNAL(toggled(bool)),this,TQT_SLOT(slotTimeToggled(bool)));
+ timeCb->setChecked(showTime);
+
+ tl->addStretch();
+}
+
+// read settings from config file
+void KBannerSetup::readSettings()
+{
+ TDEConfig *config = TDEGlobal::config();
+ config->setGroup( "Settings" );
+
+ speed=config->readNumEntry("Speed",50);
+/* if ( speed > 100 )
+ speed = 100;
+ else if ( speed < 50 )
+ speed = 50;*/
+
+ message=config->readEntry("Message","KDE");
+ showTime=config->readBoolEntry("ShowTime",FALSE);
+ fontFamily=config->readEntry("FontFamily",(TQApplication::font()).family());
+ fontSize=config->readNumEntry("FontSize",48);
+ fontColor.setNamedColor(config->readEntry("FontColor","red"));
+ cyclingColor=config->readBoolEntry("CyclingColor",FALSE);
+ bold=config->readBoolEntry("FontBold",FALSE);
+ italic=config->readBoolEntry("FontItalic",FALSE);
+}
+
+void KBannerSetup::fillFontSizes()
+{
+ bool block = comboSizes->signalsBlocked();
+ comboSizes->blockSignals( true );
+ comboSizes->clear();
+ int i = 0;
+ sizes = TQFontDatabase().pointSizes( fontFamily );
+ sizes << 96 << 128 << 156 << 0;
+ int current = 0;
+ while ( sizes[i] )
+ {
+ TQString num;
+ num.setNum( sizes[i] );
+ comboSizes->insertItem( num, i );
+ if ( fontSize == sizes[i] ) // fontsize equals one of the defined ones
+ {
+ current = i;
+ comboSizes->setCurrentItem( current );
+ slotSize( current );
+ }
+ i++;
+ }
+ if ( current == 0 ) // fontsize seems to be entered by hand
+ {
+ TQString fsize;
+ fsize.setNum( fontSize );
+ comboSizes->setEditText(fsize);
+ slotSizeEdit( fsize );
+ }
+ comboSizes->blockSignals( block );
+}
+
+void KBannerSetup::slotFamily( const TQString& fam )
+{
+ fontFamily = fam;
+ fillFontSizes(); // different font, different sizes
+ if ( saver )
+ saver->setFont( fontFamily, fontSize, fontColor, bold, italic );
+}
+
+void KBannerSetup::slotSize( int indx )
+{
+ fontSize = sizes[indx];
+ if ( saver )
+ saver->setFont( fontFamily, fontSize, fontColor, bold, italic );
+}
+
+void KBannerSetup::slotSizeEdit( const TQString& fs )
+{
+ bool ok;
+ fontSize = fs.toInt( &ok, 10 );
+ if ( ok )
+ if ( saver )
+ saver->setFont( fontFamily, fontSize, fontColor, bold, italic );
+}
+
+void KBannerSetup::slotColor( const TQColor &col )
+{
+ fontColor = col;
+ if ( saver )
+ saver->setColor(fontColor);
+}
+
+void KBannerSetup::slotCyclingColor(bool on)
+{
+ colorPush->setEnabled(!on);
+ cyclingColor=on;
+
+ if ( saver )
+ {
+ saver->setCyclingColor( on );
+ if ( !on )
+ saver->setColor( fontColor );
+ }
+}
+
+void KBannerSetup::slotBold( bool state )
+{
+ bold = state;
+ if ( saver )
+ saver->setFont( fontFamily, fontSize, fontColor, bold, italic );
+}
+
+void KBannerSetup::slotItalic( bool state )
+{
+ italic = state;
+ if ( saver )
+ saver->setFont( fontFamily, fontSize, fontColor, bold, italic );
+}
+
+void KBannerSetup::slotSpeed( int num )
+{
+ speed = num;
+ if ( saver )
+ saver->setSpeed( speed );
+}
+
+void KBannerSetup::slotMessage( const TQString &msg )
+{
+ message = msg;
+ if ( saver )
+ saver->setMessage( message );
+}
+
+void KBannerSetup::slotTimeToggled( bool on )
+{
+ ed->setEnabled(!on);
+ showTime=on;
+ if (saver)
+ {
+ if (showTime)
+ saver->setTimeDisplay();
+ else
+ {
+ message=ed->text();
+ saver->setMessage(message);
+ };
+ };
+}
+
+// Ok pressed - save settings and exit
+void KBannerSetup::slotOk()
+{
+ TDEConfig *config = TDEGlobal::config();
+ config->setGroup( "Settings" );
+
+ config->writeEntry( "Speed", speed );
+ config->writeEntry( "Message", message );
+ config->writeEntry( "ShowTime", showTime );
+ config->writeEntry( "FontFamily", fontFamily );
+
+ TQString fsize;
+ if (fontSize == 0) // an non-number was entered in the font size combo
+ {
+ fontSize = 48;
+ }
+ fsize.setNum( fontSize );
+ config->writeEntry( "FontSize", fsize );
+
+ TQString colName;
+ colName.sprintf( "#%02x%02x%02x", fontColor.red(), fontColor.green(),
+ fontColor.blue() );
+ config->writeEntry( "FontColor", colName );
+ config->writeEntry( "CyclingColor", cyclingColor );
+ config->writeEntry( "FontBold", bold );
+ config->writeEntry( "FontItalic", italic );
+
+ config->sync();
+
+ accept();
+}
+
+void KBannerSetup::slotHelp()
+{
+ KMessageBox::about(this,
+ i18n("Banner Version 2.2.1\n\nWritten by Martin R. Jones 1996\nmjones@kde.org\nExtended by Alexander Neundorf 2000\nalexander.neundorf@rz.tu-ilmenau.de\n"));
+}
+
+//-----------------------------------------------------------------------------
+
+KBannerSaver::KBannerSaver( WId id ) : KScreenSaver( id )
+{
+ krnd = new KRandomSequence();
+ readSettings();
+ initialize();
+ colorContext = TQColor::enterAllocContext();
+ needBlank = TRUE;
+ timer.start( speed );
+ connect( &timer, TQT_SIGNAL( timeout() ), TQT_SLOT( slotTimeout() ) );
+}
+
+KBannerSaver::~KBannerSaver()
+{
+ timer.stop();
+ TQColor::leaveAllocContext();
+ TQColor::destroyAllocContext( colorContext );
+ delete krnd;
+}
+
+void KBannerSaver::setSpeed( int spd )
+{
+ timer.stop();
+ int inv = 100 - spd;
+ speed = 1 + ((inv * inv) / 100);
+ timer.start( speed );
+}
+
+void KBannerSaver::setFont( const TQString& family, int size, const TQColor &color,
+ bool b, bool i )
+{
+ fontFamily = family;
+ fontSize = size;
+ fontColor = color;
+ bold = b;
+ italic = i;
+
+ initialize();
+}
+
+void KBannerSaver::setColor(TQColor &color)
+{
+ fontColor = color;
+ cyclingColor = FALSE;
+ needUpdate = TRUE;
+}
+
+void KBannerSaver::setCyclingColor( bool on )
+{
+ cyclingColor = on;
+ needUpdate = TRUE;
+}
+
+void KBannerSaver::setMessage( const TQString &msg )
+{
+ showTime = FALSE;
+ message = msg;
+ pixmapSize = TQSize();
+ needBlank = TRUE;
+}
+
+void KBannerSaver::setTimeDisplay()
+{
+ showTime = TRUE;
+ pixmapSize = TQSize();
+ needBlank = TRUE;
+}
+
+// read settings from config file
+void KBannerSaver::readSettings()
+{
+ TDEConfig *config = TDEGlobal::config();
+ config->setGroup( "Settings" );
+
+ setSpeed( config->readNumEntry("Speed",50) );
+
+ message=config->readEntry("Message","KDE");
+
+ showTime=config->readBoolEntry("ShowTime",FALSE);
+
+ fontFamily=config->readEntry("FontFamily",(TQApplication::font()).family());
+
+ fontSize=config->readNumEntry("FontSize",48);
+
+ fontColor.setNamedColor(config->readEntry("FontColor","red"));
+
+ cyclingColor=config->readBoolEntry("CyclingColor",FALSE);
+
+ bold=config->readBoolEntry("FontBold",FALSE);
+ italic=config->readBoolEntry("FontItalic",FALSE);
+
+ if ( cyclingColor )
+ {
+ currentHue=0;
+ fontColor.setHsv(0,SATURATION,VALUE);
+ }
+}
+
+// initialize font
+void KBannerSaver::initialize()
+{
+ fsize = fontSize * height() / TQApplication::desktop()->height();
+
+ font = TQFont( fontFamily, fsize, bold ? TQFont::Bold : TQFont::Normal, italic );
+
+ pixmapSize = TQSize();
+ needBlank = TRUE;
+
+ xpos = width();
+ ypos = fsize + (int) ((double)(height()-fsize)*krnd->getDouble());
+ step = 2 * width() / TQApplication::desktop()->width(); // 6 -> 2 -hhjb-
+ if ( step == 0 )
+ step = 1;
+}
+
+// erase old text and draw in new position
+void KBannerSaver::slotTimeout()
+{
+ if (cyclingColor)
+ {
+ int hueStep = speed/10;
+ currentHue=(currentHue+hueStep)%360;
+ fontColor.setHsv(currentHue,SATURATION,VALUE);
+ }
+ if (showTime)
+ {
+ TQString new_message = TDEGlobal::locale()->formatTime(TQTime::currentTime(), true);
+ if( new_message != message )
+ needUpdate = TRUE;
+ message = new_message;
+ }
+ if ( !pixmapSize.isValid() || cyclingColor || needUpdate || needBlank )
+ {
+ TQRect rect = TQFontMetrics( font ).boundingRect( message );
+ rect.setWidth( rect.width() + step );
+ if ( rect.width() > pixmapSize.width() )
+ pixmapSize.setWidth( rect.width() );
+ if ( rect.height() > pixmapSize.height() )
+ pixmapSize.setHeight( rect.height() );
+ pixmap = TQPixmap( pixmapSize );
+ pixmap.fill( black );
+ TQPainter p( &pixmap );
+ p.setFont( font );
+ p.setPen( fontColor );
+ p.drawText( -rect.x(), -rect.y(), message );
+ needUpdate = FALSE;
+ }
+ xpos -= step;
+ if ( xpos < -pixmapSize.width() ) {
+ TQPainter p( this );
+ p.fillRect( xpos + step, ypos, pixmapSize.width(), pixmapSize.height(), black );
+ xpos = width();
+ ypos = fsize + (int) ((double)(height()-2.0*fsize)*krnd->getDouble());
+ }
+
+ if ( needBlank )
+ {
+ setBackgroundColor( black );
+ erase();
+ needBlank = FALSE;
+ }
+ bitBlt( this, xpos, ypos, &pixmap, 0, 0, pixmapSize.width(), pixmapSize.height());
+}
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