Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeartwork@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 419 insertions, 0 deletions

diff --git a/kscreensaver/kdesavers/gravity.cpp b/kscreensaver/kdesavers/gravity.cpp
new file mode 100644
index 00000000..d9f9bbd1
--- /dev/null
+++ b/kscreensaver/kdesavers/gravity.cpp
@@ -0,0 +1,419 @@
+//-----------------------------------------------------------------------------
+//
+// kgravity - Partical Gravity Screen Saver for KDE 2
+//
+// Copyright (c)  Ian Reinhart Geiser 2001
+//
+// KConfig code and KScreenSaver "Setup..." improvements by
+// Nick Betcher <nbetcher@usinternet.com> 2001
+//
+#include <stdlib.h>
+#include <qlabel.h>
+#include <qlayout.h>
+#include <kapplication.h>
+#include <klocale.h>
+#include <kconfig.h>
+#include <kcolordialog.h>
+#include <kbuttonbox.h>
+#include <kcolorbutton.h>
+#include "gravity.h"
+#include "gravity.moc"
+#ifdef Q_WS_MACX
+#include <OpenGL/glu.h>
+#include <OpenGL/gl.h>
+#else
+#include <GL/glu.h>
+#include <GL/gl.h>
+#endif
+#include <qimage.h>
+#include <kdebug.h>
+#include <qpainter.h>
+#include <qradiobutton.h>
+#include <qspinbox.h>
+#include <kstandarddirs.h>
+#include <math.h>
+#include <kmessagebox.h>
+// libkscreensaver interface
+extern "C"
+{
+	KDE_EXPORT const char *kss_applicationName = "kgravity.kss";
+	KDE_EXPORT const char *kss_description = I18N_NOOP( "Particle Gravity Screen Saver" );
+	KDE_EXPORT const char *kss_version = "2.2.0";
+
+	KDE_EXPORT KScreenSaver *kss_create( WId id )
+	{
+		return new KGravitySaver( id );
+	}
+
+	KDE_EXPORT QDialog *kss_setup()
+	{
+		return new KGravitySetup();
+	}
+}
+
+//-----------------------------------------------------------------------------
+// dialog to setup screen saver parameters
+//
+KGravitySetup::KGravitySetup( QWidget *parent, const char *name )
+	: SetupUi( parent, name, TRUE )
+{
+	readSettings();
+
+	preview->setFixedSize( 220, 170 );
+	preview->setBackgroundColor( black );
+#ifdef Q_WS_X11
+	preview->show();    // otherwise saver does not get correct size
+#endif
+	saver = new KGravitySaver( preview->winId() );
+;
+	connect( PushButton1, SIGNAL( clicked() ), SLOT( slotOkPressed() ) );
+	connect( PushButton2, SIGNAL( clicked() ), SLOT( reject() ) );
+	connect( PushButton3, SIGNAL( clicked() ), SLOT( aboutPressed() ) );
+	connect(  SpinBox1, SIGNAL( valueChanged(int)), saver, SLOT( updateSize(int)));
+	connect( RadioButton1, SIGNAL( toggled(bool)), saver, SLOT( doStars(bool)));
+
+}
+
+KGravitySetup::~KGravitySetup()
+{
+    delete saver;
+}
+
+// read settings from config file
+void KGravitySetup::readSettings()
+{
+	KConfig config("kssgravityrc", false, false);
+
+	config.setGroup( "Settings" );
+	QString boolval = config.readEntry( "Stars", "false" );
+	if (boolval == "true") {
+		RadioButton1->setDown(true);
+		RadioButton1_2->setDown(false);
+	} else {
+		if (boolval == "false")
+		{
+			RadioButton1->setDown(false);
+			RadioButton1_2->setDown(true);
+		}
+	}
+
+	QString starammount = config.readEntry("StarSize", "75");
+	SpinBox1->setValue(starammount.toInt());
+
+}
+
+// Ok pressed - save settings and exit
+void KGravitySetup::slotOkPressed()
+{
+	KConfig config("kssgravityrc", false, false);
+	config.setGroup( "Settings" );
+
+	if (RadioButton1->isOn() == true)
+	{
+		config.writeEntry( "Stars", "true" );
+	} else {
+		if (RadioButton1_2->isOn() == true)
+		{
+			config.writeEntry( "Stars", "false" );
+		}
+	}
+	config.writeEntry( "StarSize", QString::number(SpinBox1->value()) );
+
+	config.sync();
+
+	accept();
+}
+
+void KGravitySetup::aboutPressed()
+{
+    KMessageBox::about(this,
+        i18n("<h3>Gravity</h3>\n<p>Particle Gravity Screen Saver for KDE</p>\nCopyright (c)  Ian Reinhart Geiser 2001<br>\n\n<p>KConfig code and KScreenSaver \"Setup...\" improvements by Nick Betcher <nbetcher@usinternet.com> 2001</p>"));
+}
+//-----------------------------------------------------------------------------
+
+
+KGravitySaver::KGravitySaver( WId id ) : KScreenSaver( id )
+{
+
+	kdDebug() << "Blank" << endl;
+
+	timer = new QTimer( this );
+    	timer->start( 25, TRUE );
+	setBackgroundColor( black );
+        erase();
+	gravity = new Gravity();
+	embed(gravity);
+#ifdef Q_WS_X11
+	gravity->show();
+#endif
+	connect( timer, SIGNAL(timeout()), this, SLOT(blank()) );
+}
+
+KGravitySaver::~KGravitySaver()
+{
+
+}
+
+// read configuration settings from config file
+void KGravitySaver::readSettings()
+{
+// Please remove me
+
+}
+
+void KGravitySaver::blank()
+{
+	// Play gravity
+
+	gravity->updateGL();
+	timer->start( 25, TRUE );
+
+}
+Gravity::Gravity( QWidget * parent, const char * name) : QGLWidget (parent,name)
+{
+	rainbow=true;
+	slowdown=2.0f;
+	zoom=-50.0f;
+	index=0;
+	size = 3.95f;
+//	obj = gluNewQuadric();
+
+// This has to be here because you can't update the gravity until 'gravity' is created!
+	KConfig config("kssgravityrc", false, false);
+	config.setGroup( "Settings" );
+	QString boolval = config.readEntry( "Stars", "false" );
+	if (boolval == "true") {
+		setStars(true);
+	} else {
+		if (boolval == "false")
+		{
+			setStars(false);
+		}
+	}
+
+	QString starammount = config.readEntry("StarSize", "75");
+	float passvalue = (starammount.toInt() / 100.0);
+	setSize(passvalue);
+
+}
+
+Gravity::~Gravity()
+{
+	glDeleteTextures( 1, &texture[0] );
+	gluDeleteQuadric(obj);
+}
+
+/** load the particle file */
+bool Gravity::loadParticle()
+{
+    /* Status indicator */
+    bool Status = TRUE;
+	QImage buf;
+
+    kdDebug() << "Loading: " << locate("data", "kscreensaver/particle.png") << endl;
+ if (buf.load( locate("data", "kscreensaver/particle.png") ) )
+
+        {
+		tex = convertToGLFormat(buf);  // flipped 32bit RGBA
+		kdDebug() << "Texture loaded: " << tex.numBytes () << endl;
+	}
+	else
+	{
+		QImage dummy( 32, 32, 32 );
+  		dummy.fill( Qt::white.rgb() );
+        	buf = dummy;
+		tex = convertToGLFormat( buf );
+	}
+
+            /* Set the status to true */
+            //Status = TRUE;
+	glGenTextures(1, &texture[0]);   /* create three textures */
+	glBindTexture(GL_TEXTURE_2D, texture[0]);
+	/* use linear filtering */
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	/* actually generate the texture */
+	glTexImage2D(GL_TEXTURE_2D, 0, 4, tex.width(), tex.height(), 0,
+	GL_RGBA, GL_UNSIGNED_BYTE, tex.bits());
+
+
+
+    return Status;
+}
+/** setup the GL enviroment */
+void Gravity::initializeGL ()
+{
+
+	kdDebug() << "InitGL" << endl;
+
+	if (loadParticle())						// Jump To Texture Loading Routine
+	{
+    /* Enable smooth shading */
+    glShadeModel( GL_SMOOTH );
+
+    /* Set the background black */
+    glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
+
+    /* Depth buffer setup */
+    glClearDepth( 1.0f );
+
+    /* Enables Depth Testing */
+    glDisable( GL_DEPTH_TEST );
+
+    /* Enable Blending */
+    glEnable( GL_BLEND );
+    /* Type Of Blending To Perform */
+    glBlendFunc( GL_SRC_ALPHA, GL_ONE );
+
+
+    /* Really Nice Perspective Calculations */
+    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
+    /* Really Nice Point Smoothing */
+    glHint( GL_POINT_SMOOTH_HINT, GL_NICEST );
+
+    /* Enable Texture Mapping */
+    glEnable( GL_TEXTURE_2D );
+    /* Select Our Texture */
+    glBindTexture( GL_TEXTURE_2D, texture[0] );
+
+		for (loop=0;loop<MAX_PARTICLES;loop++)				// Initials All The Textures
+		 {
+			buildParticle(loop);
+		}
+	}
+	else
+		exit(0);
+}
+/** resize the gl view */
+void Gravity::resizeGL ( int width, int height )
+{
+	kdDebug() << "ResizeGL " << width << "," <<height<< endl;
+	if (height==0)							// Prevent A Divide By Zero By
+	{
+		height=1;						// Making Height Equal One
+	}
+
+	glViewport(0,0,width,height);					// Reset The Current Viewport
+
+	glMatrixMode(GL_PROJECTION);					// Select The Projection Matrix
+	glLoadIdentity();						// Reset The Projection Matrix
+
+	// Calculate The Aspect Ratio Of The Window
+	gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
+
+	glMatrixMode(GL_MODELVIEW);					// Select The Modelview Matrix
+	glLoadIdentity();
+}
+/** paint the GL view */
+void Gravity::paintGL ()
+{
+	//kdDebug() << "PaintGL" << endl;
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);		// Clear Screen And Depth Buffer
+	glLoadIdentity();
+						// Reset The ModelView Matrix
+	transIndex++;
+	//glRotatef(transIndex, 1,0,0);
+	//glRotatef(transIndex, 0,1,0);
+	//glRotatef(transIndex, 0,0,1);
+	float xmax = 5.0;
+	float ymax = 5.0;
+	glTranslatef( GLfloat(xmax*sin(3.14*transIndex/360)-xmax),
+			GLfloat(ymax*cos(3.14*transIndex/360)-ymax),
+			0.0 );
+	//glRotatef(transIndex, 0,GLfloat(zmax*cos(3.14*transIndex/360000)), GLfloat(zmax*cos(3.14*transIndex/360000)));
+
+	for (loop=0;loop<MAX_PARTICLES;loop++)				// Loop Through All The Particles
+	{
+		if (particle[loop].active)				// If The Particle Is Active
+		{
+			float x=particle[loop].x;			// Grab Our Particle X Position
+			float y=particle[loop].y;			// Grab Our Particle Y Position
+			float z=particle[loop].z+zoom;			// Particle Z Pos + Zoom
+    /* Select Our Texture */
+
+                    /* Draw The Particle Using Our RGB Values,
+                     * Fade The Particle Based On It's Life
+                     */
+			particle[loop].life=(particle[loop].index/particle[loop].indexo)*2.0f;
+                    glColor4f( particle[loop].r,
+                               particle[loop].g,
+                               particle[loop].b,
+                               particle[loop].life );
+
+                    /* Build Quad From A Triangle Strip */
+		  if( !stars )
+		    glBegin( GL_TRIANGLE_STRIP );
+		  else
+		glBegin( GL_TRIANGLE_FAN );
+			/* Top Right */
+			glTexCoord2d( 1, 1 );
+			glVertex3f( x + particle[loop].size, y + particle[loop].size, z );
+			/* Top Left */
+			glTexCoord2d( 0, 1 );
+			glVertex3f( x - particle[loop].size, y + particle[loop].size, z );
+			/* Bottom Right */
+			glTexCoord2d( 1, 0 );
+			glVertex3f( x + particle[loop].size, y - particle[loop].size, z );
+			/* Bottom Left */
+			glTexCoord2d( 0, 0 );
+			glVertex3f( x - particle[loop].size, y - particle[loop].size, z );
+		glEnd( );
+			particle[loop].x=(particle[loop].xo*sin(particle[loop].index))*pow((double) particle[loop].index/particle[loop].indexo,(double) 8.0);
+			particle[loop].y=(particle[loop].yo*sin(particle[loop].index))*pow((double) particle[loop].index/particle[loop].indexo,(double) 8.0);
+			particle[loop].z=(particle[loop].zo*sin(particle[loop].index))*pow((double) particle[loop].index/particle[loop].indexo,(double) 8.0);
+			particle[loop].index-=0.05;
+			if (particle[loop].index<0.0f )			// If Particle Is Burned Out
+			{
+				buildParticle(loop);
+			}
+			// Lets stir some things up
+		}
+	}
+
+	glFlush();
+}
+void Gravity::setSize( float newSize )
+{
+	size = newSize;
+}
+void Gravity::setStars( bool doStars )
+{
+	stars = doStars;
+}
+
+void KGravitySaver::updateSize(int newSize)
+{
+	gravity->setSize(newSize/100);
+}
+void KGravitySaver::doStars(bool starState)
+{
+	gravity->setStars(starState);
+}
+
+void Gravity::buildParticle(int loop)
+{
+	GLfloat colors[12][3]=
+	{{1.0f,0.5f,0.5f},{1.0f,0.75f,0.5f},{1.0f,1.0f,0.5f},{0.75f,1.0f,0.5f},
+	{0.5f,1.0f,0.5f},{0.5f,1.0f,0.75f},{0.5f,1.0f,1.0f},{0.5f,0.75f,1.0f},
+	{0.5f,0.5f,1.0f},{0.75f,0.5f,1.0f},{1.0f,0.5f,1.0f},{1.0f,0.5f,0.75f}};
+	col = ( ++col ) % 12;
+	particle[loop].active=true;
+	particle[loop].index=KApplication::random()%100;
+	particle[loop].indexo=particle[loop].index;
+	particle[loop].fade=float(KApplication::random()%100)/1000.0f+0.003f;	// Random Fade Value
+	particle[loop].r=colors[col][0];			// Select Red From Color Table
+	particle[loop].g=colors[col][1];			// Select Green From Color Table
+	particle[loop].b=colors[col][2];			// Select Blue From Color Table
+	particle[loop].size=size;
+	particle[loop].x = float(KApplication::random()%100-50)*4.0;
+	particle[loop].y = float(KApplication::random()%20-10)*4.0;
+	particle[loop].z = float(KApplication::random()%100-50)*4.0;
+	particle[loop].xo = particle[loop].x;
+	if ((1+(KApplication::random() % 10) > 5))
+		particle[loop].yo = particle[loop].y;
+	else
+		particle[loop].yo = 0.0;
+	particle[loop].zo = particle[loop].z;
+
+}
+