summaryrefslogtreecommitdiffstats
path: root/tdescreensaver/kdesavers/lines.cpp
blob: 071239343173996631d1c1e453419c48ff848e03 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
//-----------------------------------------------------------------------------
//
// klines 0.1.1 - Basic screen saver for TDE
// 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 libtdescreensaver by Martin R. Jones

#include <config.h>
#include <stdlib.h>
#include <time.h>
#include <tqcolor.h>
#include <tqlabel.h>
#include <tqslider.h>
#include <tdeconfig.h>
#include <tdeapplication.h>
#include <tdemessagebox.h>
#include <kcolorbutton.h>

#include "kcolordialog.h"
#include "lines.h"
#include "lines.moc"

#include <tqlayout.h>
#include <tdelocale.h>
#include <tdeglobal.h>
#include <tqpainter.h>

#define MAXLENGTH	256

// libtdescreensaver 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, TQt::Horizontal,
		main);
	sb->setMinimumSize(120, 20);
	sb->setTickmarks(TQSlider::Below);
	sb->setTickInterval(32);
	connect(sb, TQ_SIGNAL(valueChanged(int)), TQ_SLOT(slotLength(int)));
	tl1->addWidget(sb);

	label=new TQLabel(i18n("Speed:"), main);
	tl1->addWidget(label);

	sb = new TQSlider(0, 100, 10, speed, TQt::Horizontal, main);
	sb->setMinimumSize(120, 20);
	sb->setTickmarks(TQSlider::Below);
	sb->setTickInterval(10);
	connect( sb, TQ_SIGNAL( valueChanged( int ) ), TQ_SLOT( slotSpeed( int ) ) );
	tl1->addWidget(sb);

	label=new TQLabel(i18n("Beginning:"), main);
	tl1->addWidget(label);

	colorPush0=new KColorButton(colstart, main);
	connect(colorPush0, TQ_SIGNAL(changed(const TQColor &)),
		TQ_SLOT(slotColstart(const TQColor &)));
	tl1->addWidget(colorPush0);

	label=new TQLabel(i18n("Middle:"), main);
	tl1->addWidget(label);

	colorPush1=new KColorButton(colmid, main);
	connect(colorPush1, TQ_SIGNAL(changed(const TQColor &)),
		TQ_SLOT(slotColmid(const TQColor &)));
	tl1->addWidget(colorPush1);

	label=new TQLabel(i18n("End:"), main);
	tl1->addWidget(label);

	colorPush2=new KColorButton(colend, main);
	connect(colorPush2, TQ_SIGNAL(changed(const TQColor &)),
		TQ_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(){
    TDEConfig *config = TDEGlobal::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(){
    TDEConfig *config = TDEGlobal::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, TQ_SIGNAL(timeout()), TQ_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(){
    TDEConfig *config=TDEGlobal::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;
}