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Diffstat (limited to 'kscreensaver/kdesavers/blob.cpp')
| -rw-r--r-- | kscreensaver/kdesavers/blob.cpp | 527 |
1 files changed, 0 insertions, 527 deletions
diff --git a/kscreensaver/kdesavers/blob.cpp b/kscreensaver/kdesavers/blob.cpp deleted file mode 100644 index 4b116744..00000000 --- a/kscreensaver/kdesavers/blob.cpp +++ /dev/null @@ -1,527 +0,0 @@ -//----------------------------------------------------------------------------- -// -// kblob - Basic screen saver for KDE -// -// Copyright (c) Tiaan Wessels, 1997 -// -// To add new alg : -// - add blob_alg enum in blob.h before ALG_LAST -// - choose 2 letter prefix for alg and add vars needed to private vars -// in KBlobSaver in blob.h -// - add xxSetup and xxNextFrame method definitions in blob.h -// - implement methods in this file. xxSetup to init vars mentioned -// in step 2. xxNextFrame to advance blob painter ( calc tx,ty and -// use box() method to position painter -// - add descriptive string in alg_str array in this file before "Random" -// - add to Algs array in KBlobSaver constructor in this file -// - test by setup saver and choosing alg from list - -#include <config.h> -#include <stdlib.h> -#include <time.h> -#include <limits.h> -#include <math.h> - -#include <tqcolor.h> -#include <tqlabel.h> -#include <tqlistbox.h> -#include <tqlayout.h> -#include <tqpainter.h> -#include <tqpixmap.h> -#include <tqimage.h> - -#include <kapplication.h> -#include <kconfig.h> -#include <kmessagebox.h> -#include <knuminput.h> -#include <klocale.h> -#include <kglobal.h> -#include <krandomsequence.h> - -#include "blob.moc" -#include "blob.h" - -#define SMALLRAND(a) (int)(rnd->getLong(a)+1) - - -// libkscreensaver interface -extern "C" -{ - KDE_EXPORT const char *kss_applicationName = "kblob.kss"; - KDE_EXPORT const char *kss_description = I18N_NOOP( "KBlob" ); - KDE_EXPORT const char *kss_version = "2.2.0"; - - KDE_EXPORT KScreenSaver *kss_create( WId id ) - { - return new KBlobSaver( id ); - } - - KDE_EXPORT TQDialog *kss_setup() - { - return new KBlobSetup(); - } -} - -static KRandomSequence *rnd = 0; - -TQString alg_str[5]; -void initAlg() -{ - alg_str[0] = i18n("Random Linear"); - alg_str[1] = i18n("Horizontal Sine"); - alg_str[2] = i18n("Circular Bounce"); - alg_str[3] = i18n("Polar Coordinates"); - alg_str[4] = i18n("Random"); -} - -//----------------------------------------------------------------------------- -// the blob screensaver's code - -KBlobSaver::KBlobSaver ( WId id) - : KScreenSaver( id ) -{ - rnd = new KRandomSequence(); - initAlg(); - TQColor color; - float ramp = (256.0-64.0)/(float)RAMP; - TQString msg = - i18n("This screen saver requires a color display."); - - blank(); - - // needs colors to work this one - if (TQPixmap::defaultDepth() < 8) - { - TQPainter p(this); - p.setPen( white ); - p.drawText( width()/2, height()/2, msg ); - return; - } - - colorContext = TQColor::enterAllocContext(); - - // if 8-bit, create lookup table for color ramping further down - if (TQPixmap::defaultDepth() == 8) - { - memset(lookup, 0, 256*sizeof(uint)); - int i; - for (i = 0; i < RAMP; i++) - { - color.setRgb(64+(int)(ramp*(float)i), 0, 0); - colors[i] = color.alloc(); - } - memset(lookup, black.pixel(), sizeof(uint)*256); - for (i = 0; i < RAMP-1; i++) - lookup[colors[i]] = colors[i+1]; - lookup[black.pixel()] = lookup[colors[RAMP-1]] = colors[0]; - } - else - { - // make special provision for preview mode - if (height() < 400) - { - if (TQPixmap::defaultDepth() > 8 ) - setColorInc(7); - else - setColorInc(4); - } - else - { - if (TQPixmap::defaultDepth() > 8 ) - setColorInc(3); - else - setColorInc(2); - } - } - - // the dimensions of the blob painter - dim = height()/70+1; - - // record starting time to know when to change frames - start = time(NULL); - - // init some parameters used by all algorithms - xhalf = width()/2; - yhalf = height()/2; - - // means a new algorithm should be set at entrance of timer - newalg = newalgp = 1; - - // init algorithm space - Algs[0].Name = alg_str[0]; - Algs[0].Init = &KBlobSaver::lnSetup; - Algs[0].NextFrame = &KBlobSaver::lnNextFrame; - - Algs[1].Name = alg_str[1]; - Algs[1].Init = &KBlobSaver::hsSetup; - Algs[1].NextFrame = &KBlobSaver::hsNextFrame; - - Algs[2].Name = alg_str[2]; - Algs[2].Init = &KBlobSaver::cbSetup; - Algs[2].NextFrame = &KBlobSaver::cbNextFrame; - - Algs[3].Name = alg_str[3]; - Algs[3].Init = &KBlobSaver::pcSetup; - Algs[3].NextFrame = &KBlobSaver::pcNextFrame; - - // get setup from kde registry - readSettings(); - - // start timer which will update blob painter - timer.start(SPEED); - connect(&timer, TQT_SIGNAL(timeout()), TQT_SLOT(slotTimeout())); -} - -KBlobSaver::~KBlobSaver() -{ - timer.stop(); - - TQColor::leaveAllocContext(); - TQColor::destroyAllocContext(colorContext); - delete rnd; rnd = 0; -} - -void KBlobSaver::setAlgorithm(int a) -{ - newalg = newalgp = ((a == ALG_RANDOM) ? 1 : 2); - alg = a; -} - -void KBlobSaver::lnSetup() -{ - // initialize the blob movement dictators with random vals - // incrementals on axis - ln_xinc = SMALLRAND(3); - ln_yinc = SMALLRAND(2); - - // start position - tx = SMALLRAND(width()-dim-ln_xinc*2); - ty = SMALLRAND(height()-dim-ln_yinc*2); -} - -void KBlobSaver::hsSetup() -{ - hs_per = SMALLRAND(7); - hs_radians = 0.0; - hs_rinc = (hs_per*M_PI)/(hs_per*90*4); - hs_flip = 1.0; -} - -void KBlobSaver::cbSetup() -{ - cb_radians = 0.0; - cb_rinc = (2.0*M_PI)/360.0; - cb_sradians = 0.0; - cb_deviate = SMALLRAND(height()/20)+(height()/15); - cb_radius = height()/2-cb_deviate*2-2*dim; - cb_devradinc = (rnd->getDouble()*10.0*2.0*M_PI)/360.0; -} - -void KBlobSaver::pcSetup() -{ - pc_angle = 0.0; - pc_radius = 0.0; - pc_inc = (2.0*M_PI)/720.0; - pc_crot = 0.0; - pc_div = SMALLRAND(4)-1; -} - -// render next frame ( or change algorithms ) -void KBlobSaver::slotTimeout() -{ - time_t now = time(NULL); - - // should algorithm be changed - if (now-start > showlen) - newalg = newalgp; - - // set new algorithm - if (newalg) - { - blank(); - if (newalg == 1) - alg = SMALLRAND(ALG_LAST)-1; - (this->*Algs[alg].Init)(); - newalg = 0; - start = time(NULL); - } - - // gen next fram for current algorithm - (this->*Algs[alg].NextFrame)(); -} - -void KBlobSaver::lnNextFrame() -{ - int dir; - - // depending on the algorithm to use, move the blob painter to - // a new location - // check for wall hit to change direction - if (tx+dim+ln_xinc > (int)width()-1 || tx+ln_xinc < 0) - { - if (ln_xinc > 0) - dir = -1; - else - dir = 1; - ln_xinc = SMALLRAND(3)*dir; - } - if (ty+dim+ln_yinc > (int)height()-1 || ty+ln_yinc < 0) - { - if (ln_yinc > 0) - dir = -1; - else - dir = 1; - ln_yinc = SMALLRAND(2)*dir; - } - - // move box to new position - tx += ln_xinc; - ty += ln_yinc; - - // draw new box - box(tx, ty); -} - -void KBlobSaver::hsNextFrame() -{ - static int xlen = width()-(4*dim); - static int ylen = height()-(4*dim); - - // calc x as offset on angle line and y as vertical offset - // on interval -1..1 sine of angle - tx = (int)((hs_radians/(hs_per*M_PI))*(float)xlen); - ty = (int)((float)(ylen/4)*(hs_flip*sin(hs_radians)))+yhalf; - - // draw new box - box(tx, ty); - - // set new radians - hs_radians += hs_rinc; - if (hs_radians > hs_per*M_PI) - { - hs_rinc *= -1.0; - hs_radians += hs_rinc; - hs_flip *= -1.0; - } - else if (hs_radians < 0.0) - hsSetup(); -} - -void KBlobSaver::cbNextFrame() -{ - int deviate; - - // calculate deviation of circle main radius - deviate = (int)(sin(cb_sradians)*cb_deviate); - - // calculate topleft of box as a circle with a sine perturbed radius - tx = (int)(cos(cb_radians)*(cb_radius+deviate))+xhalf; - ty = (int)(sin(cb_radians)*(cb_radius+deviate))+yhalf; - - // draw the box - box(tx, ty); - - // increase greater circle render angle - cb_radians += cb_rinc; - if (cb_radians > 2.0*M_PI) - cb_radians -= 2.0*M_PI; - - // increase radius deviation offset on sine wave - cb_sradians += cb_devradinc; -} - -void KBlobSaver::pcNextFrame() -{ - static float scale = (float)height()/3.0 - 4.0*dim; - - // simple polar coordinate equation - if (pc_div < 1.0) - pc_radius = cos(2.0*pc_angle); - else - pc_radius = 1.0/pc_div + cos(2.0*pc_angle); - - tx = (int)(scale*pc_radius*cos(pc_angle+pc_crot))+xhalf; - ty = (int)(scale*pc_radius*sin(pc_angle+pc_crot))+yhalf; - - // advance blob painter - box(tx, ty); - - // new movement parameters - pc_angle += pc_inc; - if (pc_angle > 2.0*M_PI) - { - pc_angle -= 2.0*M_PI; - pc_crot += M_PI/45.0; - } -} - -void KBlobSaver::box ( int x, int y ) -{ - // for bad behaving algorithms that wants to cause an X trap - // confine to the valid region before using potentially fatal XGetImage - if ((x+dim) >= width()) - x = width()-dim-1; - else if (x < 0) - x = 0; - if ((y+dim) > height()) - y = height()-dim-1; - else if (y < 0) - y = 0; - - // get the box region from the display to upgrade - TQImage img = TQPixmap(TQPixmap::grabWindow(winId(), x, y, dim, dim)).convertToImage(); - - // depending on the depth of the display, use either lookup table for - // next rgb val ( 8-bit ) or ramp the color directly for other displays - if ( img.depth() == 8) - { - // manipulate image by upgrading each pixel with 1 using a lookup - // table as the color allocation could have resulted in a spread out - // configuration of the color ramp - for (int j = 0; j < img.height(); j++) - { - for (int i = 0; i < img.width(); i++) - { - img.scanLine(j)[i] = lookup[img.scanLine(j)[i]]; - } - } - } - else - { - for (int j = 0; j < img.height(); j++) - { - for (int i = 0; i < img.width(); i++) - { - TQRgb p = img.pixel( i, j ); - p += (colorInc<<18); - img.setPixel( i, j, p ); - } - } - } - - // put the image back onto the screen - TQPainter p(this); - p.drawImage( x, y, img ); -} - -void KBlobSaver::blank() -{ - setBackgroundColor( black ); - erase(); -} - -void KBlobSaver::readSettings() -{ - TDEConfig *config = TDEGlobal::config(); - config->setGroup("Settings"); - - // number of seconds to spend on a frame - showlen = config->readNumEntry("Showtime", 3*60); - - // algorithm to use. if not set then use random - alg = config->readNumEntry("Algorithm", ALG_RANDOM); - if (alg == ALG_RANDOM) - newalg = 1; - else - newalg = 2; - newalgp = newalg; -} - -//----------------------------------------------------------------------------- -// dialog to setup screen saver parameters -// -KBlobSetup::KBlobSetup -( - TQWidget *parent, - const char *name -) -: KDialogBase( parent, name, true, i18n( "Setup Blob Screen Saver" ), - Ok|Cancel|Help, Ok, true ) -{ - - initAlg(); - - // get saver configuration from kde registry - readSettings(); - - setButtonText( Help, i18n( "A&bout" ) ); - TQWidget *main = makeMainWidget(); - - TQHBoxLayout *tl = new TQHBoxLayout( main, 0, spacingHint() ); - - TQVBoxLayout *vbox = new TQVBoxLayout; - tl->addLayout(vbox); - - // seconds to generate on a frame - TQLabel *label = new TQLabel(i18n("Frame duration:"), main); - stime = new KIntNumInput( showtime, main ); - stime->setSuffix( i18n( " sec" ) ); - vbox->addWidget(label); - vbox->addWidget(stime); - - // available algorithms - label = new TQLabel(i18n("Algorithm:"), main); - algs = new TQListBox(main); - algs->setMinimumSize(150, 105); - for (int i = 0; i <= ALG_RANDOM; i++) - algs->insertItem(alg_str[i]); - algs->setCurrentItem(alg); - vbox->addWidget(label); - vbox->addWidget(algs); - - // preview window - TQWidget *preview = new TQWidget( main ); - preview->setFixedSize(220, 170); - preview->setBackgroundColor(black); - preview->show(); - tl->addWidget(preview); - saver = new KBlobSaver(preview->winId()); - saver->setDimension(3); - if (TQPixmap::defaultDepth() > 8) - saver->setColorInc(7); - else - saver->setColorInc(4); - - tl->addStretch(); - - // so selecting an algorithm will start previewing that alg - connect(algs, TQT_SIGNAL(highlighted(int)), saver, - TQT_SLOT(setAlgorithm(int))); -} - -void KBlobSetup::readSettings() -{ - TDEConfig *config = TDEGlobal::config(); - config->setGroup("Settings"); - - // number of seconds to spend on a frame - showtime = config->readNumEntry("Showtime", 3*60); - - // algorithm to use. if not set then use random - alg = config->readNumEntry("Algorithm", ALG_LAST); -} - -// Ok pressed - save settings and exit -void KBlobSetup::slotOk() -{ - TDEConfig *config = TDEGlobal::config(); - - config->setGroup("Settings"); - - config->writeEntry("Showtime", stime->value()); - config->writeEntry("Algorithm", algs->currentItem()); - - config->sync(); - - accept(); -} - -void KBlobSetup::slotHelp() -{ - KMessageBox::about(this, - i18n("Blobsaver Version 0.1\n\nWritten by Tiaan Wessels 1997\ntiaan@netsys.co.za")); - if (saver) - saver->setAlgorithm(algs->currentItem()); -} - - |