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Diffstat (limited to 'kscreensaver/kdesavers/pendulum.cpp')
| -rw-r--r-- | kscreensaver/kdesavers/pendulum.cpp | 881 |
1 files changed, 0 insertions, 881 deletions
diff --git a/kscreensaver/kdesavers/pendulum.cpp b/kscreensaver/kdesavers/pendulum.cpp deleted file mode 100644 index a355e029..00000000 --- a/kscreensaver/kdesavers/pendulum.cpp +++ /dev/null @@ -1,881 +0,0 @@ -//============================================================================ -// -// KPendulum screen saver for KDE -// -// The screen saver displays a physically realistic simulation of a two-part -// pendulum. -// -// Developed by Georg Drenkhahn, georg-d@users.sourceforge.net -// -// $Id$ -// -/* - * Copyright (C) 2004 Georg Drenkhahn - * - * KRotation is free software; you can redistribute it and/or modify it under - * the terms of the GNU General Public License version 2 as published by the - * Free Software Foundation. - * - * KRotation is distributed in the hope that it will be useful, but WITHOUT ANY - * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR - * A PARTICULAR PURPOSE. See the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 59 Temple - * Place, Suite 330, Boston, MA 02110-1301 USA - */ -//============================================================================ - -// std. C++ headers -#include <cstdlib> - -// TQt headers -#include <tqlineedit.h> -#include <tqspinbox.h> -#include <tqvalidator.h> -#include <tqcolordialog.h> -#include <tqpushbutton.h> -#include <tqtooltip.h> -// KDE headers -#include <klocale.h> -#include <kconfig.h> -#include <kdebug.h> -#include <kmessagebox.h> - -#include "sspreviewarea.h" - -// pendulum.moc includes pendulum.h -#include "pendulum.moc" - -#define KPENDULUM_VERSION "1.1" - -// libkscreensaver interface -extern "C" -{ - /// application name for libkscreensaver interface - KDE_EXPORT const char *kss_applicationName = "kpendulum.kss"; - /// application description for libkscreensaver interface - KDE_EXPORT const char *kss_description = I18N_NOOP("Simulation of\ - a two-part pendulum"); - /// application version for libkscreensaver interface - KDE_EXPORT const char *kss_version = KPENDULUM_VERSION; - - /// function to create screen saver object - KDE_EXPORT KScreenSaver* kss_create(WId id) - { - return new KPendulumSaver(id); - } - - /// function to create setup dialog for screen saver - KDE_EXPORT TQDialog* kss_setup() - { - return new KPendulumSetup(); - } -} - -//----------------------------------------------------------------------------- -// PendulumOdeSolver -//----------------------------------------------------------------------------- - -PendulumOdeSolver::PendulumOdeSolver( - const double &_t, - const double &_dt, - std::valarray<double> &_y, - const double &_eps, - const double &_m1, - const double &_m2, - const double &_l1, - const double &_l2, - const double &_g) - : RkOdeSolver<double>(_t,_y,_dt,_eps), - A(1.0/(_m2*_l1*_l1)), - B1(_m2*_l1*_l2), // constants for faster numeric calculation - B(1.0/B1), // derived from m1,m2,l1,l2,g - C((_m1+_m2)/(_m2*_m2*_l2*_l2)), - D(_g*(_m1+_m2)*_l1), - E(_g*_m2*_l2), - M((_m1+_m2)/_m2) -{ -} - -std::valarray<double> PendulumOdeSolver::f( - const double &x, - const std::valarray<double> &y) const -{ - (void)x; // unused - - const double& q1 = y[0]; - const double& q2 = y[1]; - const double& p1 = y[2]; - const double& p2 = y[3]; - - const double cosDq = std::cos(q1-q2); - const double iden = 1.0/(M - cosDq*cosDq); // invers denominator - const double dq1dt = (A*p1 - B*cosDq*p2)*iden; - const double dq2dt = (C*p2 - B*cosDq*p1)*iden; - - std::valarray<double> ypr(y.size()); - ypr[0] = dq1dt; - ypr[1] = dq2dt; - - const double K = B1 * dq1dt*dq2dt * std::sin(q1-q2); - ypr[2] = -K - D * std::sin(q1); - ypr[3] = K - E * std::sin(q2); - - return ypr; -} - -//----------------------------------------------------------------------------- -// Rotation: screen saver widget -//----------------------------------------------------------------------------- - -PendulumGLWidget::PendulumGLWidget(TQWidget* parent, const char* name) - : TQGLWidget(parent, name), - eyeR(30), // eye coordinates (polar) - eyeTheta(M_PI*0.45), - eyePhi(0), - lightR(eyeR), // light coordinates (polar) - lightTheta(M_PI*0.25), - lightPhi(M_PI*0.25), - quadM1(gluNewQuadric()), - m_barColor(KPendulumSaver::barColorDefault), - m_m1Color(KPendulumSaver::m1ColorDefault), - m_m2Color(KPendulumSaver::m2ColorDefault) -{ -} - -PendulumGLWidget::~PendulumGLWidget(void) -{ - gluDeleteQuadric(quadM1); -} - -void PendulumGLWidget::setEyePhi(double phi) -{ - eyePhi = phi; - while (eyePhi < 0) eyePhi += 2.*M_PI; - while (eyePhi > 2*M_PI) eyePhi -= 2.*M_PI; - - // get the view port - static GLint vp[4]; - glGetIntegerv(GL_VIEWPORT, vp); - // calc new perspective, a resize event is simulated here - resizeGL(static_cast<int>(vp[2]), static_cast<int>(vp[3])); -} - -void PendulumGLWidget::setAngles(const double& q1, const double& q2) -{ - ang1 = static_cast<GLfloat>(q1*180./M_PI); - ang2 = static_cast<GLfloat>(q2*180./M_PI); -} - -void PendulumGLWidget::setMasses(const double& m1, const double& m2) -{ - sqrtm1 = static_cast<GLfloat>(sqrt(m1)); - sqrtm2 = static_cast<GLfloat>(sqrt(m2)); -} - -void PendulumGLWidget::setLengths(const double& _l1, const double& _l2) -{ - l1 = static_cast<GLfloat>(_l1); - l2 = static_cast<GLfloat>(_l2); -} - -void PendulumGLWidget::setBarColor(const TQColor& c) -{ - if (c.isValid()) - { - m_barColor = c; - } -} - -void PendulumGLWidget::setM1Color(const TQColor& c) -{ - if (c.isValid()) - { - m_m1Color = c; - } -} -void PendulumGLWidget::setM2Color(const TQColor& c) -{ - if (c.isValid()) - { - m_m2Color = c; - } -} - -/* --------- protected methods ----------- */ - -void PendulumGLWidget::initializeGL(void) -{ - qglClearColor(TQColor(black)); // set color to clear the background - - glClearDepth(1); // depth buffer setup - glEnable(GL_DEPTH_TEST); // depth testing - glDepthFunc(GL_LEQUAL); // type of depth test - - glShadeModel(GL_SMOOTH); // smooth color shading in poygons - - // nice perspective calculation - glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); - - // set up the light - glEnable(GL_LIGHTING); - glEnable(GL_LIGHT0); - glEnable(GL_LIGHT1); - - glMatrixMode(GL_MODELVIEW); // select modelview matrix - glLoadIdentity(); - // set positon of light0 - GLfloat lightPos[4]= - {lightR * sin(lightTheta) * sin(lightPhi), - lightR * sin(lightTheta) * cos(lightPhi), - lightR * cos(lightTheta), - 0}; - glLightfv(GL_LIGHT0, GL_POSITION, lightPos); - // set positon of light1 - lightPos[0] = lightR * sin(lightTheta) * sin(lightPhi+M_PI); - lightPos[1] = lightR * sin(lightTheta) * cos(lightPhi+M_PI); - glLightfv(GL_LIGHT1, GL_POSITION, lightPos); - - // only for lights #>0 - GLfloat spec[]={1,1,1,1}; - glLightfv(GL_LIGHT1, GL_SPECULAR, spec); - glLightfv(GL_LIGHT1, GL_DIFFUSE, spec); - - // enable setting the material colour by glColor() - glEnable(GL_COLOR_MATERIAL); - - GLfloat emi[4] = {.13, .13, .13, 1}; - glMaterialfv(GL_FRONT, GL_EMISSION, emi); -} - -void PendulumGLWidget::paintGL(void) -{ - // clear color and depth buffer - glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); - - glMatrixMode(GL_MODELVIEW); // select modelview matrix - - glLoadIdentity(); - - static const GLfloat width = 2.0; - static const GLfloat masswidth = 1.0; - static const int noOfSlices = 20; - - // top axis, left (x>0) - glTranslatef(0.5*width, 0, 0); - glRotatef(90, 0, 1, 0); - qglColor(m_barColor); - gluCylinder(quadM1, 0.2, 0.2, 5, 10, 1); - gluSphere(quadM1, 0.2, 10, 10); - // top axis, right - glLoadIdentity(); - glTranslatef(-0.5*width, 0, 0); - glRotatef(-90, 0, 1, 0); - gluCylinder(quadM1, 0.2, 0.2, 5, 10, 1); - gluSphere(quadM1, 0.2, 10, 10); - // 1. part, left - glLoadIdentity(); - glRotatef(ang1, 1, 0, 0); - glPushMatrix(); - glTranslatef(0.5*width, 0, -l1); - gluCylinder(quadM1, 0.2, 0.2, l1, 10, 1); - glPopMatrix(); - - // 1. part, right - glPushMatrix(); - glTranslatef(-0.5*width, 0, -l1); - gluCylinder(quadM1, 0.2, 0.2, l1, 10, 1); - // 1. part, bottom - glRotatef(90, 0, 1, 0); - gluSphere(quadM1, 0.2, 10, 10); // bottom corner 1 - gluCylinder(quadM1, 0.2, 0.2, width, 10, 1); // connection - glTranslatef(0, 0, 0.5*(width-masswidth)); - qglColor(m_m1Color); - gluCylinder(quadM1, sqrtm1, sqrtm1, masswidth, noOfSlices, 1); // mass 1 - gluQuadricOrientation(quadM1, GLU_INSIDE); - gluDisk(quadM1, 0, sqrtm1, noOfSlices,1); // bottom of mass - gluQuadricOrientation(quadM1, GLU_OUTSIDE); - glTranslatef(0, 0, masswidth); - gluDisk(quadM1, 0, sqrtm1, noOfSlices,1); // top of mass - - glTranslatef(0, 0, 0.5*(width-masswidth)); - qglColor(m_barColor); - gluSphere(quadM1, 0.2, 10, 10); // bottom corner 2 - glPopMatrix(); - - // 2. pendulum bar - glLoadIdentity(); - glTranslatef(0, l1*std::sin(ang1*M_PI/180.), -l1*std::cos(ang1*M_PI/180.)); - glRotatef(ang2, 1, 0, 0); - glTranslatef(0, 0, -l2); - qglColor(m_barColor); - gluCylinder(quadM1, 0.2, 0.2, l2, 10, 1); - - // mass 2 - glRotatef(90, 0, 1, 0); - glTranslatef(0, 0, -0.5*masswidth); - qglColor(m_m2Color); - gluCylinder(quadM1, sqrtm2, sqrtm2, masswidth, noOfSlices, 1); - gluQuadricOrientation(quadM1, GLU_INSIDE); - gluDisk(quadM1, 0, sqrtm2, noOfSlices,1); // bottom of mass - gluQuadricOrientation(quadM1, GLU_OUTSIDE); - glTranslatef(0, 0, masswidth); - gluDisk(quadM1, 0, sqrtm2, noOfSlices,1); // top of mass - - glFlush(); -} - -void PendulumGLWidget::resizeGL(int w, int h) -{ - // Prevent a divide by zero - if (h == 0) h = 1; - - // set the new view port - glViewport(0, 0, static_cast<GLint>(w), static_cast<GLint>(h)); - - // set up projection matrix - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - // Perspective view - gluPerspective(40.0f, - static_cast<GLdouble>(w)/static_cast<GLdouble>(h), - 1.0, 100.0f); - - // Viewing transformation, position for better view - // Theta is polar angle 0<Theta<Pi - gluLookAt( - eyeR * sin(eyeTheta) * sin(eyePhi), - eyeR * sin(eyeTheta) * cos(eyePhi), - eyeR * cos(eyeTheta), - 0,0,0, - 0,0,1); -} - -//----------------------------------------------------------------------------- -// KPendulumSaver: screen saver class -//----------------------------------------------------------------------------- - -KPendulumSaver::KPendulumSaver(WId id) : - KScreenSaver(id), - solver(0), - m_massRatio(massRatioDefault), - m_lengthRatio(lengthRatioDefault), - m_g(gDefault), - m_E(EDefault), - m_persChangeInterval(persChangeIntervalDefault) -{ - setEraseColor(black); - erase(); // erase area - glArea = new PendulumGLWidget(this); // create gl widget - glArea->setEyePhi(eyePhiDefault); - - readSettings(); // read global settings into pars - initData(); // init solver and glArea with read settings - - embed(glArea); // embed gl widget and resize it - glArea->show(); // show gl widget - - // set up and start cyclic timer - timer = new TQTimer(this); - timer->start(deltaT, TRUE); - connect(timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(doTimeStep())); -} - -KPendulumSaver::~KPendulumSaver() -{ - // time, rotation are automatically deleted with parent KPendulumSaver - delete solver; -} - - -void KPendulumSaver::readSettings() -{ - // read configuration settings from config file - TDEConfig *config = TDEGlobal::config(); - config->setGroup("Settings"); - - // internal saver parameters are set to stored values or left at their - // default values if stored values are out of range - setMassRatio( - config->readDoubleNumEntry( - "mass ratio", - KPendulumSaver::massRatioDefault)); - setLengthRatio( - config->readDoubleNumEntry( - "length ratio", - KPendulumSaver::lengthRatioDefault)); - setG( - config->readDoubleNumEntry( - "g", - KPendulumSaver::gDefault)); - setE( - config->readDoubleNumEntry( - "E", - KPendulumSaver::EDefault)); - setPersChangeInterval( - config->readUnsignedNumEntry( - "perspective change interval", - KPendulumSaver::persChangeIntervalDefault)); - - // set the colours - setBarColor(config->readColorEntry("bar color", &barColorDefault)); - setM1Color( config->readColorEntry("m1 color", &m1ColorDefault)); - setM2Color( config->readColorEntry("m2 color", &m2ColorDefault)); -} - -void KPendulumSaver::initData() -{ - const double m1plusm2 = 2; // m1+m2 - const double m2 = m_massRatio * m1plusm2; - const double m1 = m1plusm2 - m2; - glArea->setMasses(m1, m2); - glArea->setAngles(0, 0); - - const double l1plusl2 = 9; // l1+l2 - const double l2 = m_lengthRatio * l1plusl2; - const double l1 = l1plusl2 - l2; - glArea->setLengths(l1, l2); - - // kinetic energy of m2 and m1 - const double kin_energy = m_E * m_g * (l1*m1 + (m1+m2)*(l1+l2)); - // angular velocity for 1. and 2. pendulum - const double qp = sqrt(2.*kin_energy/((m1+m2)*l1*l1 + m2*l2*l2 + m2*l1*l2)); - - // assemble initial y for solver - std::valarray<double> y(4); - y[0] = 0; // q1 - y[1] = 0; // q2 - y[2] = (m1+m2)*l1*l1*qp + 0.5*m2*l1*l2*qp; // p1 - y[3] = m2*l2*l2*qp + 0.5*m2*l1*l2*qp; // p2 - - // delete old solver - if (solver!=0) delete solver; - // init new solver - solver = new PendulumOdeSolver( - 0.0, // t - 0.01, // first dt step size estimation - y, - 1e-5, // eps - m1, - m2, - l1, - l2, - m_g); -} - - -void KPendulumSaver::setBarColor(const TQColor& c) -{ - glArea->setBarColor(c); -} -TQColor KPendulumSaver::barColor(void) const -{ - return glArea->barColor(); -} - -const TQColor KPendulumSaver::barColorDefault(255, 255, 127); - -void KPendulumSaver::setM1Color(const TQColor& c) -{ - glArea->setM1Color(c); -} -TQColor KPendulumSaver::m1Color(void) const -{ - return glArea->m1Color(); -} - -const TQColor KPendulumSaver::m1ColorDefault(170, 0, 127); - -void KPendulumSaver::setM2Color(const TQColor& c) -{ - glArea->setM2Color(c); -} -TQColor KPendulumSaver::m2Color(void) const -{ - return glArea->m2Color(); -} - -const TQColor KPendulumSaver::m2ColorDefault( 85, 170, 127); - - -void KPendulumSaver::setMassRatio(const double& massRatio) -{ - // range check is not neccessary in normal operation because validators check - // the values at input. But the validators do not check for corrupted - // settings read from disk. - if (massRatio >= massRatioLimitLower - && massRatio <= massRatioLimitUpper - && m_massRatio != massRatio) - { - m_massRatio = massRatio; - if (timer!=0) - { - initData(); - } - } -} - -const double KPendulumSaver::massRatioLimitLower = 0.01; -const double KPendulumSaver::massRatioLimitUpper = 0.99; -const double KPendulumSaver::massRatioDefault = 0.5; - -void KPendulumSaver::setLengthRatio(const double& lengthRatio) -{ - if (lengthRatio >= lengthRatioLimitLower - && lengthRatio <= lengthRatioLimitUpper - && m_lengthRatio != lengthRatio) - { - m_lengthRatio = lengthRatio; - if (timer!=0) - { - initData(); - } - } -} - -const double KPendulumSaver::lengthRatioLimitLower = 0.01; -const double KPendulumSaver::lengthRatioLimitUpper = 0.99; -const double KPendulumSaver::lengthRatioDefault = 0.5; - -void KPendulumSaver::setG(const double& g) -{ - if (g >= gLimitLower - && g <= gLimitUpper - && m_g != g) - { - m_g = g; - if (timer!=0) - { - initData(); - } - } -} - -const double KPendulumSaver::gLimitLower = 0.1; -const double KPendulumSaver::gLimitUpper = 300.0; -const double KPendulumSaver::gDefault = 40.0; - -void KPendulumSaver::setE(const double& E) -{ - if (E >= ELimitLower - && E <= ELimitUpper - && m_E != E) - { - m_E = E; - if (timer!=0) - { - initData(); - } - } -} - -const double KPendulumSaver::ELimitLower = 0.0; -const double KPendulumSaver::ELimitUpper = 5.0; -const double KPendulumSaver::EDefault = 1.2; - -void KPendulumSaver::setPersChangeInterval( - const unsigned int& persChangeInterval) -{ - if (persChangeInterval >= persChangeIntervalLimitLower - && persChangeInterval <= persChangeIntervalLimitUpper - && m_persChangeInterval != persChangeInterval) - { - m_persChangeInterval = persChangeInterval; - // do not restart simulation here - } -} - -const double KPendulumSaver::eyePhiDefault = 0.25*M_PI; - - -void KPendulumSaver::doTimeStep() -{ - /* time (in seconds) of perspective change. - * - t<0: no change yet - * - t=0: change starts - * - 0<t<moving time: change takes place - * - t=moving time: end of the change */ - static double persChangeTime = -5; - - // integrate a step ahead - solver->integrate(0.001*deltaT); - - // read new y from solver - const std::valarray<double> y = solver->Y(); - - // tell glArea the new coordinates/angles of the pendulum - glArea->setAngles(y[0], y[1]); - - // handle perspective change - persChangeTime += 0.001*deltaT; - if (persChangeTime > 0) - { - // phi value at the start of a perspective change - static double eyePhi0 = eyePhiDefault; - // phi value at the end of a perspective change - static double eyePhi1 = 0.75*M_PI; - static double deltaEyePhi = eyePhi1-eyePhi0; - - // movement acceleration/deceleration - const double a = 3; - // duration of the change period - const double movingTime = 2.*sqrt(fabs(deltaEyePhi)/a); - - // new current phi of eye - double eyePhi = persChangeTime < 0.5*movingTime ? - // accelerating phase - eyePhi0 + (deltaEyePhi>0?1:-1) - * 0.5*a*persChangeTime*persChangeTime: - // decellerating phase - eyePhi1 - (deltaEyePhi>0?1:-1) - * 0.5*a*(movingTime-persChangeTime)*(movingTime-persChangeTime); - - if (persChangeTime>movingTime) - { // perspective change has finished - // set new time till next change - persChangeTime = -double(m_persChangeInterval); - eyePhi0 = eyePhi = eyePhi1; - // find new phi value with angleLimit < phi < Pi-angleLimit or - // Pi+angleLimit < phi < 2*Pi-angleLimit - const double angleLimit = M_PI*0.2; - for (eyePhi1 = 0; - eyePhi1<angleLimit - || (eyePhi1<M_PI+angleLimit && eyePhi1>M_PI-angleLimit) - || eyePhi1>2*M_PI-angleLimit; - eyePhi1 = double(rand())/RAND_MAX * 2*M_PI) - {} - // new delta phi for next change - deltaEyePhi = eyePhi1 - eyePhi0; - // find shortest perspective change - if (deltaEyePhi < -M_PI) deltaEyePhi += 2*M_PI; - } - - glArea->setEyePhi(eyePhi); // set new perspective - } - - glArea->updateGL(); // repaint scenery - timer->start(deltaT, TRUE); // restart timer -} - -// public slot of KPendulumSaver, forward resize event to public slot of glArea -// to allow the resizing of the gl area withing the setup dialog -void KPendulumSaver::resizeGlArea(TQResizeEvent* e) -{ - glArea->resize(e->size()); -} - -//----------------------------------------------------------------------------- -// KPendulumSetup: dialog to setup screen saver parameters -//----------------------------------------------------------------------------- - -KPendulumSetup::KPendulumSetup(TQWidget* parent, const char* name) - : KPendulumSetupUi(parent, name), - // create saver and give it the WinID of the preview area - saver(new KPendulumSaver(preview->winId())) -{ - // the dialog should block, no other control center input should be possible - // until the dialog is closed - setModal(TRUE); - - // create input validators - mEdit->setValidator(new TQDoubleValidator( - KPendulumSaver::massRatioLimitLower, - KPendulumSaver::massRatioLimitUpper, - 5, mEdit)); - lEdit->setValidator(new TQDoubleValidator( - KPendulumSaver::lengthRatioLimitLower, - KPendulumSaver::lengthRatioLimitUpper, - 5, lEdit)); - gEdit->setValidator(new TQDoubleValidator( - KPendulumSaver::gLimitLower, - KPendulumSaver::gLimitUpper, - 5, gEdit)); - eEdit->setValidator(new TQDoubleValidator( - KPendulumSaver::ELimitLower, - KPendulumSaver::ELimitUpper, - 5, eEdit)); - - // set input limits for the perspective change interval time - persSpinBox->setMinValue(KPendulumSaver::persChangeIntervalLimitLower); - persSpinBox->setMaxValue(KPendulumSaver::persChangeIntervalLimitUpper); - - // set tool tips of editable fields - TQToolTip::add( - mEdit, - i18n("Ratio of 2nd mass to sum of both masses.\nValid values from %1 to %2.") - .arg(KPendulumSaver::massRatioLimitLower, 0, 'f', 2) - .arg(KPendulumSaver::massRatioLimitUpper, 0, 'f', 2)); - TQToolTip::add( - lEdit, - i18n("Ratio of 2nd pendulum part length to the sum of both part lengths.\nValid values from %1 to %2.") - .arg(KPendulumSaver::lengthRatioLimitLower, 0, 'f', 2) - .arg(KPendulumSaver::lengthRatioLimitUpper, 0, 'f', 2)); - TQToolTip::add( - gEdit, - i18n("Gravitational constant in arbitrary units.\nValid values from %1 to %2.") - .arg(KPendulumSaver::gLimitLower, 0, 'f', 2) - .arg(KPendulumSaver::gLimitUpper, 0, 'f', 2)); - TQToolTip::add( - eEdit, - i18n("Energy in units of the maximum potential energy of the given configuration.\nValid values from %1 to %2.") - .arg(KPendulumSaver::ELimitLower, 0, 'f', 2) - .arg(KPendulumSaver::ELimitUpper, 0, 'f', 2)); - TQToolTip::add( - persSpinBox, - i18n("Time in seconds after which a random perspective change occurs.\nValid values from %1 to %2.") - .arg(KPendulumSaver::persChangeIntervalLimitLower) - .arg(KPendulumSaver::persChangeIntervalLimitUpper)); - - // init preview area - preview->setBackgroundColor(black); - preview->show(); // otherwise saver does not get correct size - - // read settings from saver and update GUI elements with these values, saver - // has read settings in its constructor - - // set editable fields with stored values as defaults - TQString text; - text.setNum(saver->massRatio()); - mEdit->setText(text); - text.setNum(saver->lengthRatio()); - lEdit->setText(text); - text.setNum(saver->g()); - gEdit->setText(text); - text.setNum(saver->E()); - eEdit->setText(text); - - persSpinBox->setValue(saver->persChangeInterval()); - - barColorButton->setPaletteBackgroundColor(saver->barColor()); - m1ColorButton->setPaletteBackgroundColor(saver->m1Color()); - m2ColorButton->setPaletteBackgroundColor(saver->m2Color()); - - // if the preview area is resized it emmits the resized() event which is - // caught by the saver. The embedded GlArea is resized to fit into the - // preview area. - connect(preview, TQT_SIGNAL(resized(TQResizeEvent*)), - saver, TQT_SLOT(resizeGlArea(TQResizeEvent*))); -} - -KPendulumSetup::~KPendulumSetup() -{ - delete saver; -} - -// Ok pressed - save settings and exit -void KPendulumSetup::okButtonClickedSlot() -{ - TDEConfig* config = TDEGlobal::config(); - config->setGroup("Settings"); - - config->writeEntry("mass ratio", saver->massRatio()); - config->writeEntry("length ratio", saver->lengthRatio()); - config->writeEntry("g", saver->g()); - config->writeEntry("E", saver->E()); - config->writeEntry("perspective change interval", - saver->persChangeInterval()); - config->writeEntry("bar color", saver->barColor()); - config->writeEntry("m1 color", saver->m1Color()); - config->writeEntry("m2 color", saver->m2Color()); - - config->sync(); - accept(); -} - -void KPendulumSetup::aboutButtonClickedSlot() -{ - KMessageBox::about(this, i18n("\ -<h3>KPendulum Screen Saver for KDE</h3>\ -<p>Simulation of a two-part pendulum</p>\ -<p>Copyright (c) Georg Drenkhahn 2004</p>\ -<p><tt>georg-d@users.sourceforge.net</tt></p>")); -} - -void KPendulumSetup::mEditLostFocusSlot(void) -{ - if (mEdit->hasAcceptableInput()) - { - saver->setMassRatio(mEdit->text().toDouble()); - } - else - { // write current setting back into input field - TQString text; - text.setNum(saver->massRatio()); - mEdit->setText(text); - } -} -void KPendulumSetup::lEditLostFocusSlot(void) -{ - if (lEdit->hasAcceptableInput()) - { - saver->setLengthRatio(lEdit->text().toDouble()); - } - else - { // write current setting back into input field - TQString text; - text.setNum(saver->lengthRatio()); - lEdit->setText(text); - } -} -void KPendulumSetup::gEditLostFocusSlot(void) -{ - if (gEdit->hasAcceptableInput()) - { - saver->setG(gEdit->text().toDouble()); - } - else - { // write current setting back into input field - TQString text; - text.setNum(saver->g()); - gEdit->setText(text); - } -} -void KPendulumSetup::eEditLostFocusSlot(void) -{ - if (eEdit->hasAcceptableInput()) - { - saver->setE(eEdit->text().toDouble()); - } - else - { // write current setting back into input field - TQString text; - text.setNum(saver->E()); - eEdit->setText(text); - } -} -void KPendulumSetup::persChangeEnteredSlot(int t) -{ - saver->setPersChangeInterval(t); -} - -void KPendulumSetup::barColorButtonClickedSlot(void) -{ - TQColor color = TQColorDialog::getColor( - saver->barColor(), this, "bar color dialog"); - if (color.isValid()) - { - saver->setBarColor(color); - barColorButton->setPaletteBackgroundColor(color); - } -} -void KPendulumSetup::m1ColorButtonClickedSlot(void) -{ - TQColor color = TQColorDialog::getColor( - saver->m1Color(), this, "mass 1 color dialog"); - if (color.isValid()) - { - saver->setM1Color(color); - m1ColorButton->setPaletteBackgroundColor(color); - } -} -void KPendulumSetup::m2ColorButtonClickedSlot(void) -{ - TQColor color = TQColorDialog::getColor( - saver->m2Color(), this, "mass 2 color dialog"); - if (color.isValid()) - { - saver->setM2Color(color); - m2ColorButton->setPaletteBackgroundColor(color); - } -} |