Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeartwork@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 509 insertions, 0 deletions

diff --git a/kscreensaver/kdesavers/banner.cpp b/kscreensaver/kdesavers/banner.cpp
new file mode 100644
index 00000000..5309c05a
--- /dev/null
+++ b/kscreensaver/kdesavers/banner.cpp
@@ -0,0 +1,509 @@
+//-----------------------------------------------------------------------------
+//
+// 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 libkscreensaver 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 <qlabel.h>
+#include <qlineedit.h>
+#include <qcombobox.h>
+#include <qcheckbox.h>
+#include <qgroupbox.h>
+#include <qslider.h>
+#include <qlayout.h>
+#include <qdatetime.h>
+#include <qfontdatabase.h>
+#include <qpainter.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"
+
+// libkscreensaver 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 QDialog *kss_setup()
+    {
+        return new KBannerSetup();
+    }
+}
+
+//-----------------------------------------------------------------------------
+
+KBannerSetup::KBannerSetup( QWidget *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();
+
+    QWidget *main = makeMainWidget();
+
+	QLabel *label;
+
+	QVBoxLayout *tl = new QVBoxLayout(main, 0, spacingHint());
+	QHBoxLayout *tl1 = new QHBoxLayout( 0, 0, spacingHint() );
+	tl->addLayout(tl1);
+	QVBoxLayout *tl11 = new QVBoxLayout( 0, 0, spacingHint() );
+	tl1->addLayout(tl11);
+
+	QGroupBox *group = new QGroupBox( 0, Vertical, i18n("Font"), main );
+	QGridLayout *gl = new QGridLayout(group->layout(), 6, 2, spacingHint() );
+
+	label = new QLabel( i18n("Family:"), group );
+	gl->addWidget(label, 1, 0);
+
+	KFontCombo* comboFonts = new KFontCombo( QFontDatabase().families(), group );
+	comboFonts->setCurrentFont( fontFamily );
+	gl->addWidget(comboFonts, 1, 1);
+	connect( comboFonts, SIGNAL( activated( const QString& ) ),
+			SLOT( slotFamily( const QString& ) ) );
+
+	label = new QLabel( i18n("Size:"), group );
+	gl->addWidget(label, 2, 0);
+
+	comboSizes = new QComboBox( TRUE, group );
+        fillFontSizes();
+	gl->addWidget(comboSizes, 2, 1);
+	connect( comboSizes, SIGNAL( activated( int ) ), SLOT( slotSize( int ) ) );
+	connect( comboSizes, SIGNAL( textChanged( const QString & ) ),
+			SLOT( slotSizeEdit( const QString &  ) ) );
+
+	QCheckBox *cb = new QCheckBox( i18n("Bold"),
+				       group );
+	cb->setChecked( bold );
+	connect( cb, SIGNAL( toggled( bool ) ), SLOT( slotBold( bool ) ) );
+	gl->addWidget(cb, 3, 0);
+
+	cb = new QCheckBox( i18n("Italic"), group );
+	cb->setChecked( italic );
+	gl->addWidget(cb, 3, 1);
+	connect( cb, SIGNAL( toggled( bool ) ), SLOT( slotItalic( bool ) ) );
+
+	label = new QLabel( i18n("Color:"), group );
+	gl->addWidget(label, 4, 0);
+
+	colorPush = new KColorButton( fontColor, group );
+	gl->addWidget(colorPush, 4, 1);
+	connect( colorPush, SIGNAL( changed(const QColor &) ),
+		 SLOT( slotColor(const QColor &) ) );
+
+   QCheckBox *cyclingColorCb=new QCheckBox(i18n("Cycling color"),group);
+   cyclingColorCb->setMinimumSize(cyclingColorCb->sizeHint());
+   gl->addMultiCellWidget(cyclingColorCb,5,5,0,1);
+   connect(cyclingColorCb,SIGNAL(toggled(bool)),this,SLOT(slotCyclingColor(bool)));
+   cyclingColorCb->setChecked(cyclingColor);
+
+	preview = new QWidget( 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 QLabel( i18n("Speed:"), main );
+	tl11->addStretch(1);
+	tl11->addWidget(label);
+
+	QSlider *sb = new QSlider(0, 100, 10, speed, QSlider::Horizontal, main );
+	sb->setMinimumWidth( 180);
+	sb->setFixedHeight(20);
+    sb->setTickmarks(QSlider::Below);
+    sb->setTickInterval(10);
+	tl11->addWidget(sb);
+	connect( sb, SIGNAL( valueChanged( int ) ), SLOT( slotSpeed( int ) ) );
+
+	QHBoxLayout *tl2 = new QHBoxLayout;
+	tl->addLayout(tl2);
+
+	label = new QLabel( i18n("Message:"), main );
+	tl2->addWidget(label);
+
+	ed = new QLineEdit( main );
+	tl2->addWidget(ed);
+	ed->setText( message );
+	connect( ed, SIGNAL( textChanged( const QString & ) ),
+			SLOT( slotMessage( const QString &  ) ) );
+
+   QCheckBox *timeCb=new QCheckBox( i18n("Show current time"), main);
+   timeCb->setFixedSize(timeCb->sizeHint());
+   tl->addWidget(timeCb,0,Qt::AlignLeft);
+   connect(timeCb,SIGNAL(toggled(bool)),this,SLOT(slotTimeToggled(bool)));
+   timeCb->setChecked(showTime);
+
+   tl->addStretch();
+}
+
+// read settings from config file
+void KBannerSetup::readSettings()
+{
+    KConfig *config = KGlobal::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",(QApplication::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 = QFontDatabase().pointSizes( fontFamily );
+    sizes << 96 << 128 << 156 << 0;
+    int current = 0;
+    while ( sizes[i] )
+	{
+	QString 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
+        {
+	QString fsize;
+	fsize.setNum( fontSize );
+	comboSizes->setEditText(fsize);
+	slotSizeEdit( fsize );
+	}
+    comboSizes->blockSignals( block );
+}
+
+void KBannerSetup::slotFamily( const QString& 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 QString& fs )
+{
+	bool ok;
+        fontSize = fs.toInt( &ok, 10 );
+	if ( ok )
+		if ( saver )
+			saver->setFont( fontFamily, fontSize, fontColor, bold, italic );
+}
+
+void KBannerSetup::slotColor( const QColor &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 QString &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()
+{
+	KConfig *config = KGlobal::config();
+	config->setGroup( "Settings" );
+
+	config->writeEntry( "Speed", speed );
+	config->writeEntry( "Message", message );
+	config->writeEntry( "ShowTime", showTime );
+	config->writeEntry( "FontFamily", fontFamily );
+
+	QString fsize;
+	if (fontSize == 0) // an non-number was entered in the font size combo
+	{
+		fontSize = 48;
+	}
+	fsize.setNum( fontSize );
+	config->writeEntry( "FontSize", fsize );
+
+	QString 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 = QColor::enterAllocContext();
+	needBlank = TRUE;
+	timer.start( speed );
+	connect( &timer, SIGNAL( timeout() ), SLOT( slotTimeout() ) );
+}
+
+KBannerSaver::~KBannerSaver()
+{
+	timer.stop();
+	QColor::leaveAllocContext();
+	QColor::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 QString& family, int size, const QColor &color,
+		bool b, bool i )
+{
+	fontFamily = family;
+	fontSize = size;
+	fontColor = color;
+	bold = b;
+	italic = i;
+
+	initialize();
+}
+
+void KBannerSaver::setColor(QColor &color)
+{
+    fontColor = color;
+    cyclingColor = FALSE;
+    needUpdate = TRUE;
+}
+
+void KBannerSaver::setCyclingColor( bool on )
+{
+    cyclingColor = on;
+    needUpdate = TRUE;
+}
+
+void KBannerSaver::setMessage( const QString &msg )
+{
+    showTime = FALSE;
+    message = msg;
+    pixmapSize = QSize();
+    needBlank = TRUE;
+}
+
+void KBannerSaver::setTimeDisplay()
+{
+    showTime = TRUE;
+    pixmapSize = QSize();
+    needBlank = TRUE;
+}
+
+// read settings from config file
+void KBannerSaver::readSettings()
+{
+    KConfig *config = KGlobal::config();
+    config->setGroup( "Settings" );
+
+   setSpeed( config->readNumEntry("Speed",50) );
+
+   message=config->readEntry("Message","KDE");
+
+   showTime=config->readBoolEntry("ShowTime",FALSE);
+
+   fontFamily=config->readEntry("FontFamily",(QApplication::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() / QApplication::desktop()->height();
+
+	font = QFont( fontFamily, fsize, bold ? QFont::Bold : QFont::Normal, italic );
+
+	pixmapSize = QSize();
+	needBlank = TRUE;
+
+	xpos = width();
+	ypos = fsize + (int) ((double)(height()-fsize)*krnd->getDouble());
+	step = 2 * width() / QApplication::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)
+    {
+        QString new_message = KGlobal::locale()->formatTime(QTime::currentTime(), true);
+	if( new_message != message )
+	    needUpdate = TRUE;
+	message = new_message;
+    }
+    if ( !pixmapSize.isValid() || cyclingColor || needUpdate || needBlank )
+    {
+        QRect rect = QFontMetrics( 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 = QPixmap( pixmapSize );
+	pixmap.fill( black );
+	QPainter p( &pixmap );
+	p.setFont( font );
+	p.setPen( fontColor );
+	p.drawText( -rect.x(), -rect.y(), message );
+	needUpdate = FALSE;
+    }
+    xpos -= step;
+    if ( xpos < -pixmapSize.width() ) {
+	QPainter 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());
+}