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tdeartwork/kscreensaver/kdesavers/lines.cpp

402 lines
9.7 KiB

//-----------------------------------------------------------------------------
//
// 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 <tqcolor.h>
#include <tqlabel.h>
#include <tqslider.h>
#include <kconfig.h>
#include <kapplication.h>
#include <kmessagebox.h>
#include <kcolorbutton.h>
#include "kcolordialog.h"
#include "lines.h"
#include "lines.moc"
#include <tqlayout.h>
#include <klocale.h>
#include <kglobal.h>
#include <tqpainter.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 TQDialog *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(TQWidget *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" ) );
TQWidget *main = makeMainWidget();
TQHBoxLayout *tl = new TQHBoxLayout(main, 0, spacingHint());
TQVBoxLayout *tl1 = new TQVBoxLayout;
tl->addLayout(tl1);
TQLabel *label=new TQLabel(i18n("Length:"), main);
tl1->addWidget(label);
TQSlider *sb= new TQSlider(1, MAXLENGTH+1, 16, length, Qt::Horizontal,
main);
sb->setMinimumSize(120, 20);
sb->setTickmarks(TQSlider::Below);
sb->setTickInterval(32);
connect(sb, TQT_SIGNAL(valueChanged(int)), TQT_SLOT(slotLength(int)));
tl1->addWidget(sb);
label=new TQLabel(i18n("Speed:"), main);
tl1->addWidget(label);
sb = new TQSlider(0, 100, 10, speed, Qt::Horizontal, main);
sb->setMinimumSize(120, 20);
sb->setTickmarks(TQSlider::Below);
sb->setTickInterval(10);
connect( sb, TQT_SIGNAL( valueChanged( int ) ), TQT_SLOT( slotSpeed( int ) ) );
tl1->addWidget(sb);
label=new TQLabel(i18n("Beginning:"), main);
tl1->addWidget(label);
colorPush0=new KColorButton(colstart, main);
connect(colorPush0, TQT_SIGNAL(changed(const TQColor &)),
TQT_SLOT(slotColstart(const TQColor &)));
tl1->addWidget(colorPush0);
label=new TQLabel(i18n("Middle:"), main);
tl1->addWidget(label);
colorPush1=new KColorButton(colmid, main);
connect(colorPush1, TQT_SIGNAL(changed(const TQColor &)),
TQT_SLOT(slotColmid(const TQColor &)));
tl1->addWidget(colorPush1);
label=new TQLabel(i18n("End:"), main);
tl1->addWidget(label);
colorPush2=new KColorButton(colend, main);
connect(colorPush2, TQT_SIGNAL(changed(const TQColor &)),
TQT_SLOT(slotColend(const TQColor &)));
tl1->addWidget(colorPush2);
tl1->addStretch();
preview = new TQWidget( 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" );
TQString 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 TQColor &col){
colstart = col;
if(saver) saver->setColor(colstart, colmid, colend);
}
void kLinesSetup::slotColmid(const TQColor &col){
colmid = col;
if(saver) saver->setColor(colstart, colmid, colend);
}
void kLinesSetup::slotColend(const TQColor &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");
TQString slength;
slength.setNum(length);
config->writeEntry("Length", slength);
TQString sspeed;
sspeed.setNum( speed );
config->writeEntry( "Speed", sspeed );
TQString 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=TQColor::enterAllocContext();
blank();
initialiseColor();
initialiseLines();
timer.start(speed);
connect(&timer, TQT_SIGNAL(timeout()), TQT_SLOT(slotTimeout()));
}
kLinesSaver::~kLinesSaver(){
timer.stop();
TQColor::leaveAllocContext();
TQColor::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 TQColor& cs, const TQColor& cm, const TQColor& 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();
TQPainter 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;
}