kscreensaver/kdesavers/gravity.h

   1 ///-----------------------------------------------------------------------------
   2 //
   3 // kgravity - Partical gravity Screen Saver for KDE 2
   4 //
   5 // Copyright (c)  Ian Reinhart Geiser 2001
   6 //
   7 /////
   8 //NOTE:
   9 // The base particle engine did not come from me, it was designed by Jeff Molofee <nehe@connect.ab.ca>
  10 // I did some extensive modifications to make it work with QT's OpenGL but the base principal is about
  11 // the same.
  12 ////
  13
  14 #ifndef GRAVITY_H
  15 #define GRAVITY_H
  16
  17 #include <qdialog.h>
  18 #include <qgl.h>
  19 #ifdef Q_WS_MACX
  20 #include <OpenGL/glu.h>
  21 #include <OpenGL/gl.h>
  22 #else
  23 #include <GL/glu.h>
  24 #include <GL/gl.h>
  25 #endif
  26 #include <kscreensaver.h>
  27 #include <qtimer.h>
  28 #include <qimage.h>
  29 #include "ui_gravitycfg.h"
  30 #include <kcomponentdata.h>
  31 #include <qfile.h>
  32 #include <qtextstream.h>
  33
  34 #define MAX_PARTICLES   100
  35
  36
  37 class Gravity : public QGLWidget
  38 {
  39 Q_OBJECT
  40         class particles                                         // Create A Structure For Particle
  41         {
  42         public:
  43                 bool    active;                                 // Active (Yes/No)
  44                 float   life;                                   // Particle Life
  45                 float   fade;                                   // Fade Speed
  46                 float   r;                                      // Red Value
  47                 float   g;                                      // Green Value
  48                 float   b;                                      // Blue Value
  49                 float   x;                                      // X Position
  50                 float   y;                                      // Y Position
  51                 float   z;                                      // Z Position
  52                 float   xo;                                     // X Position
  53                 float   yo;                                     // Y Position
  54                 float   zo;                                     // Z Position
  55                 float   index;                                  // Index
  56                 float   indexo;
  57                 float   size;                                   // Particle Size
  58         };
  59
  60 public:
  61         Gravity( QWidget * parent=0 );
  62         ~Gravity();
  63         void setSize( float newSize );
  64         void setStars( bool doStars );
  65 protected:
  66         /** paint the GL view */
  67         void paintGL ();
  68         /** resize the gl view */
  69         void resizeGL ( int w, int h );
  70         /** setup the GL environment */
  71         void initializeGL ();
  72         void buildParticle(int loop);
  73
  74 private:
  75         /** load the partical file */
  76         bool loadParticle();
  77
  78         particles particle[MAX_PARTICLES];
  79
  80
  81         bool    rainbow;                                        // Rainbow Mode?
  82         bool    sp;                                             // Spacebar Pressed?
  83         bool    rp;                                             // Enter Key Pressed?
  84         float   slowdown;                                       // Slow Down Particles
  85         float   xspeed;                                         // Base X Speed (To Allow Keyboard Direction Of Tail)
  86         float   yspeed;                                         // Base Y Speed (To Allow Keyboard Direction Of Tail)
  87         float   zoom;                                   // Used To Zoom Out
  88         float   size;
  89         float   stars;
  90         GLuint  loop;                                           // Misc Loop Variable
  91         GLuint  col;                                            // Current Color Selection
  92         GLuint  delay;                                          // Rainbow Effect Delay
  93         GLuint  texture[1];
  94         QImage  tex;
  95         float   index;
  96         float   transIndex;
  97         GLfloat scale;
  98         GLUquadricObj *obj;
  99 };
 100
 101 class KGravitySaver : public KScreenSaver
 102 {
 103 Q_OBJECT
 104 public:
 105         KGravitySaver( WId drawable );
 106         virtual ~KGravitySaver();
 107         void readSettings();
 108 public slots:
 109         void blank();
 110         void updateSize(int newSize);
 111         void doStars(bool starState);
 112 //      void loadTextures(bool textures);
 113 private:
 114         Gravity *gravity;
 115         QTimer  *timer;
 116 };
 117
 118 class KGravitySetup : public QDialog, public Ui::SetupUi
 119 {
 120         Q_OBJECT
 121 public:
 122         KGravitySetup( QWidget *parent = 0L);
 123         ~KGravitySetup();
 124
 125 protected:
 126         void readSettings();
 127
 128 private slots:
 129         void slotOkPressed();
 130         void aboutPressed();
 131 private:
 132         KGravitySaver *saver;
 133         float   size;
 134         float   stars;
 135         float   zoom;
 136         float   speed;
 137 };
 138
 139 #endif
 140
 141