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-rw-r--r--kscreensaver/kdesavers/lines.cpp401
1 files changed, 401 insertions, 0 deletions
diff --git a/kscreensaver/kdesavers/lines.cpp b/kscreensaver/kdesavers/lines.cpp
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+++ b/kscreensaver/kdesavers/lines.cpp
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+//-----------------------------------------------------------------------------
+//
+// klines 0.1.1 - Basic screen saver for KDE
+// by Dirk Staneker 1997
+// based on kpolygon from Martin R. Jones 1996
+// mailto:dirk.staneker@student.uni-tuebingen.de
+//
+// layout management added 1998/04/19 by Mario Weilguni <mweilguni@kde.org>
+// 2001/03/04 Converted to libkscreensaver by Martin R. Jones
+
+#include <config.h>
+#include <stdlib.h>
+#include <time.h>
+#include <qcolor.h>
+#include <qlabel.h>
+#include <qslider.h>
+#include <kconfig.h>
+#include <kapplication.h>
+#include <kmessagebox.h>
+#include <kcolorbutton.h>
+
+#include "kcolordialog.h"
+#include "lines.h"
+#include "lines.moc"
+
+#include <qlayout.h>
+#include <klocale.h>
+#include <kglobal.h>
+#include <qpainter.h>
+
+#define MAXLENGTH 256
+
+// libkscreensaver interface
+extern "C"
+{
+ KDE_EXPORT const char *kss_applicationName = "klines.kss";
+ KDE_EXPORT const char *kss_description = I18N_NOOP( "KLines" );
+ KDE_EXPORT const char *kss_version = "2.2.0";
+
+ KDE_EXPORT KScreenSaver *kss_create( WId id )
+ {
+ return new kLinesSaver( id );
+ }
+
+ KDE_EXPORT QDialog *kss_setup()
+ {
+ return new kLinesSetup();
+ }
+}
+
+// Methods of the Lines-class
+Lines::Lines(int x){
+ uint i;
+ numLn=x;
+ offx1=12;
+ offy1=16;
+ offx2=9;
+ offy2=10;
+ start=new Ln;
+ end=start;
+ for(i=1; i<numLn; i++){
+ end->next=new Ln;
+ end=end->next;
+ }
+ end->next=start;
+ akt=start;
+}
+
+Lines::~Lines(){
+ uint i;
+ for(i=0; i<numLn; i++){
+ end=start->next;
+ delete start;
+ start=end;
+ }
+}
+
+inline void Lines::reset(){ akt=start; }
+
+inline void Lines::getKoord(int& a, int& b, int& c, int& d){
+ a=akt->x1; b=akt->y1;
+ c=akt->x2; d=akt->y2;
+ akt=akt->next;
+}
+
+inline void Lines::setKoord(const int& a, const int& b, const int& c, const int& d){
+ akt->x1=a; akt->y1=b;
+ akt->x2=c; akt->y2=d;
+}
+
+inline void Lines::next(void){ akt=akt->next; }
+
+void Lines::turn(const int& w, const int& h){
+ start->x1=end->x1+offx1;
+ start->y1=end->y1+offy1;
+ start->x2=end->x2+offx2;
+ start->y2=end->y2+offy2;
+ if(start->x1>=w) offx1=-8;
+ if(start->x1<=0) offx1=7;
+ if(start->y1>=h) offy1=-11;
+ if(start->y1<=0) offy1=13;
+ if(start->x2>=w) offx2=-17;
+ if(start->x2<=0) offx2=15;
+ if(start->y2>=h) offy2=-10;
+ if(start->y2<=0) offy2=13;
+ end->next=start;
+ start=start->next;
+ end=end->next;
+}
+
+
+//-----------------------------------------------------------------------------
+// dialog to setup screen saver parameters
+//
+kLinesSetup::kLinesSetup(QWidget *parent, const char *name)
+ : KDialogBase(parent, name, true, i18n( "Setup Lines Screen Saver" ),
+ Ok|Cancel|Help, Ok, true ), saver( 0 ), length( 10 ), speed( 50 )
+{
+ readSettings();
+
+ setButtonText( Help, i18n( "A&bout" ) );
+ QWidget *main = makeMainWidget();
+
+ QHBoxLayout *tl = new QHBoxLayout(main, 0, spacingHint());
+ QVBoxLayout *tl1 = new QVBoxLayout;
+ tl->addLayout(tl1);
+
+ QLabel *label=new QLabel(i18n("Length:"), main);
+ tl1->addWidget(label);
+
+ QSlider *sb= new QSlider(1, MAXLENGTH+1, 16, length, QSlider::Horizontal,
+ main);
+ sb->setMinimumSize(120, 20);
+ sb->setTickmarks(QSlider::Below);
+ sb->setTickInterval(32);
+ connect(sb, SIGNAL(valueChanged(int)), SLOT(slotLength(int)));
+ tl1->addWidget(sb);
+
+ label=new QLabel(i18n("Speed:"), main);
+ tl1->addWidget(label);
+
+ sb = new QSlider(0, 100, 10, speed, QSlider::Horizontal, main);
+ sb->setMinimumSize(120, 20);
+ sb->setTickmarks(QSlider::Below);
+ sb->setTickInterval(10);
+ connect( sb, SIGNAL( valueChanged( int ) ), SLOT( slotSpeed( int ) ) );
+ tl1->addWidget(sb);
+
+ label=new QLabel(i18n("Beginning:"), main);
+ tl1->addWidget(label);
+
+ colorPush0=new KColorButton(colstart, main);
+ connect(colorPush0, SIGNAL(changed(const QColor &)),
+ SLOT(slotColstart(const QColor &)));
+ tl1->addWidget(colorPush0);
+
+ label=new QLabel(i18n("Middle:"), main);
+ tl1->addWidget(label);
+
+ colorPush1=new KColorButton(colmid, main);
+ connect(colorPush1, SIGNAL(changed(const QColor &)),
+ SLOT(slotColmid(const QColor &)));
+ tl1->addWidget(colorPush1);
+
+ label=new QLabel(i18n("End:"), main);
+ tl1->addWidget(label);
+
+ colorPush2=new KColorButton(colend, main);
+ connect(colorPush2, SIGNAL(changed(const QColor &)),
+ SLOT(slotColend(const QColor &)));
+ tl1->addWidget(colorPush2);
+ tl1->addStretch();
+
+ preview = new QWidget( main );
+ preview->setFixedSize( 220, 170 );
+ preview->setBackgroundColor( black );
+ preview->show(); // otherwise saver does not get correct size
+ saver=new kLinesSaver(preview->winId());
+ tl->addWidget(preview);
+}
+
+kLinesSetup::~kLinesSetup()
+{
+ delete saver;
+}
+
+// read settings from config file
+void kLinesSetup::readSettings(){
+ KConfig *config = KGlobal::config();
+ config->setGroup( "Settings" );
+
+ QString str;
+
+ length = config->readNumEntry("Length", length);
+ if(length>MAXLENGTH) length=MAXLENGTH;
+ else if(length<1) length=1;
+
+ speed = config->readNumEntry("Speed", speed);
+ if(speed>100) speed=100;
+ else if(speed<50) speed=50;
+
+ str=config->readEntry("StartColor");
+ if(!str.isNull()) colstart.setNamedColor(str);
+ else colstart=white;
+ str=config->readEntry("MidColor");
+ if(!str.isNull()) colmid.setNamedColor(str);
+ else colmid=blue;
+ str=config->readEntry("EndColor");
+ if(!str.isNull()) colend.setNamedColor(str);
+ else colend=black;
+}
+
+void kLinesSetup::slotLength(int len){
+ length=len;
+ if(saver) saver->setLines(length);
+}
+
+void kLinesSetup::slotSpeed(int num){
+ speed=num;
+ if(saver) saver->setSpeed(speed);
+}
+
+void kLinesSetup::slotColstart(const QColor &col){
+ colstart = col;
+ if(saver) saver->setColor(colstart, colmid, colend);
+}
+
+void kLinesSetup::slotColmid(const QColor &col){
+ colmid = col;
+ if(saver) saver->setColor(colstart, colmid, colend);
+}
+
+void kLinesSetup::slotColend(const QColor &col){
+ colend = col;
+ if(saver) saver->setColor(colstart, colmid, colend);
+}
+
+void kLinesSetup::slotHelp(){
+ KMessageBox::about(this,
+ i18n("Lines Version 2.2.0\n\n"
+ "Written by Dirk Staneker 1997\n"
+ "dirk.stanerker@student.uni-tuebingen.de"));
+}
+
+// Ok pressed - save settings and exit
+void kLinesSetup::slotOk(){
+ KConfig *config = KGlobal::config();
+ config->setGroup("Settings");
+
+ QString slength;
+ slength.setNum(length);
+ config->writeEntry("Length", slength);
+
+ QString sspeed;
+ sspeed.setNum( speed );
+ config->writeEntry( "Speed", sspeed );
+
+ QString colName0, colName1, colName2;
+ colName0.sprintf("#%02x%02x%02x", colstart.red(),
+ colstart.green(), colstart.blue() );
+ config->writeEntry( "StartColor", colName0 );
+
+ colName1.sprintf("#%02x%02x%02x", colmid.red(),
+ colmid.green(), colmid.blue() );
+ config->writeEntry( "MidColor", colName1 );
+
+ colName2.sprintf("#%02x%02x%02x", colend.red(),
+ colend.green(), colend.blue() );
+ config->writeEntry( "EndColor", colName2 );
+
+ config->sync();
+ accept();
+}
+
+//-----------------------------------------------------------------------------
+
+
+kLinesSaver::kLinesSaver( WId id ) : KScreenSaver( id ){
+ readSettings();
+ lines=new Lines(numLines);
+ colorContext=QColor::enterAllocContext();
+ blank();
+ initialiseColor();
+ initialiseLines();
+ timer.start(speed);
+ connect(&timer, SIGNAL(timeout()), SLOT(slotTimeout()));
+}
+
+kLinesSaver::~kLinesSaver(){
+ timer.stop();
+ QColor::leaveAllocContext();
+ QColor::destroyAllocContext(colorContext);
+ delete lines;
+}
+
+// set lines properties
+void kLinesSaver::setLines(int len){
+ timer.stop();
+ numLines=len;
+ initialiseLines();
+ initialiseColor();
+ blank();
+ timer.start(speed);
+}
+
+// set the speed
+void kLinesSaver::setSpeed(int spd){
+ timer.stop();
+ speed=100-spd;
+ timer.start(speed);
+}
+
+void kLinesSaver::setColor(const QColor& cs, const QColor& cm, const QColor& ce){
+ colstart=cs;
+ colmid=cm;
+ colend=ce;
+ initialiseColor();
+}
+
+// read configuration settings from config file
+void kLinesSaver::readSettings(){
+ KConfig *config=KGlobal::config();
+ config->setGroup("Settings");
+
+ numLines=config->readNumEntry("Length", 10);
+ speed = 100- config->readNumEntry("Speed", 50);
+ if(numLines>MAXLENGTH) numLines=MAXLENGTH;
+ else if(numLines<1) numLines = 1;
+
+ colstart=config->readColorEntry("StartColor", &white);
+ colmid=config->readColorEntry("MidColor", &blue);
+ colend=config->readColorEntry("EndColor", &black);
+}
+
+// draw next lines and erase tail
+void kLinesSaver::slotTimeout(){
+ uint i;
+ int x1,y1,x2,y2;
+ int col=0;
+
+ lines->reset();
+ QPainter p( this );
+ p.setPen( black );
+
+ for(i=0; i<numLines; i++){
+ lines->getKoord(x1,y1,x2,y2);
+ p.drawLine( x1, y1, x2, y2 );
+ p.setPen( colors[col] );
+ col=(int)(i*colscale);
+ if(col>63) col=0;
+ }
+ lines->turn(width(), height());
+}
+
+void kLinesSaver::blank(){
+ setBackgroundColor( black );
+ erase();
+}
+
+// initialise the lines
+void kLinesSaver::initialiseLines(){
+ uint i;
+ int x1,y1,x2,y2;
+ delete lines;
+ lines=new Lines(numLines);
+ lines->reset();
+ x1=rnd.getLong(width());
+ y1=rnd.getLong(height());
+ x2=rnd.getLong(width());
+ y2=rnd.getLong(height());
+ for(i=0; i<numLines; i++){
+ lines->setKoord(x1,y1,x2,y2);
+ lines->next();
+ }
+}
+
+// create a color table of 64 colors
+void kLinesSaver::initialiseColor(){
+ int i;
+ double mr, mg, mb;
+ double cr, cg, cb;
+ mr=(double)(colmid.red()-colstart.red())/32;
+ mg=(double)(colmid.green()-colstart.green())/32;
+ mb=(double)(colmid.blue()-colstart.blue())/32;
+ cr=colstart.red();
+ cg=colstart.green();
+ cb=colstart.blue();
+ for(i=0; i<32; i++){
+ colors[63-i].setRgb((int)(mr*i+cr), (int)(mg*i+cg), (int)(mb*i+cb));
+ }
+ mr=(double)(colend.red()-colmid.red())/32;
+ mg=(double)(colend.green()-colmid.green())/32;
+ mb=(double)(colend.blue()-colmid.blue())/32;
+ cr=colmid.red();
+ cg=colmid.green();
+ cb=colmid.blue();
+ for(i=0; i<32; i++){
+ colors[31-1].setRgb((int)(mr*i+cr), (int)(mg*i+cg), (int)(mb*i+cb));
+ }
+ colscale=64.0/(double)numLines;
+}
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-24 08:00:28 +0000