Add Qt3 development HEAD version

8 files changed, 636 insertions, 0 deletions

diff --git a/tutorial/t13/cannon.cpp b/tutorial/t13/cannon.cpp
new file mode 100644
index 0000000..ac8f3d1
--- /dev/null
+++ b/tutorial/t13/cannon.cpp
@@ -0,0 +1,231 @@
+/****************************************************************
+**
+** Implementation CannonField class, Qt tutorial 13
+**
+****************************************************************/
+
+#include "cannon.h"
+#include <qtimer.h>
+#include <qpainter.h>
+#include <qpixmap.h>
+#include <qdatetime.h>
+
+#include <math.h>
+#include <stdlib.h>
+
+
+CannonField::CannonField( QWidget *parent, const char *name )
+        : QWidget( parent, name )
+{
+    ang = 45;
+    f = 0;
+    timerCount = 0;
+    autoShootTimer = new QTimer( this, "movement handler" );
+    connect( autoShootTimer, SIGNAL(timeout()),
+	     this, SLOT(moveShot()) );
+    shoot_ang = 0;
+    shoot_f = 0;
+    target = QPoint( 0, 0 );
+    gameEnded = FALSE;
+    setPalette( QPalette( QColor( 250, 250, 200) ) );
+    newTarget();
+}
+
+
+void CannonField::setAngle( int degrees )
+{
+    if ( degrees < 5 )
+	degrees = 5;
+    if ( degrees > 70 )
+	degrees = 70;
+    if ( ang == degrees )
+	return;
+    ang = degrees;
+    repaint( cannonRect(), FALSE );
+    emit angleChanged( ang );
+}
+
+
+void CannonField::setForce( int newton )
+{
+    if ( newton < 0 )
+	newton = 0;
+    if ( f == newton )
+	return;
+    f = newton;
+    emit forceChanged( f );
+}
+
+
+void CannonField::shoot()
+{
+    if ( isShooting() )
+	return;
+    timerCount = 0;
+    shoot_ang = ang;
+    shoot_f = f;
+    autoShootTimer->start( 50 );
+    emit canShoot( FALSE );
+}
+
+
+void  CannonField::newTarget()
+{
+    static bool first_time = TRUE;
+    if ( first_time ) {
+	first_time = FALSE;
+	QTime midnight( 0, 0, 0 );
+	srand( midnight.secsTo(QTime::currentTime()) );
+    }
+    QRegion r( targetRect() );
+    target = QPoint( 200 + rand() % 190,
+		     10  + rand() % 255 );
+    repaint( r.unite( targetRect() ) );
+}
+
+void CannonField::setGameOver()
+{
+    if ( gameEnded )
+	return;
+    if ( isShooting() )
+	autoShootTimer->stop();
+    gameEnded = TRUE;
+    repaint();
+}
+
+void CannonField::restartGame()
+{
+    if ( isShooting() )
+	autoShootTimer->stop();
+    gameEnded = FALSE;
+    repaint();
+    emit canShoot( TRUE );
+}
+
+void CannonField::moveShot()
+{
+    QRegion r( shotRect() );
+    timerCount++;
+
+    QRect shotR = shotRect();
+
+    if ( shotR.intersects( targetRect() ) ) {
+	autoShootTimer->stop();
+	emit hit();
+	emit canShoot( TRUE );
+    } else if ( shotR.x() > width() || shotR.y() > height() ) {
+	autoShootTimer->stop();
+	emit missed();
+	emit canShoot( TRUE );
+    } else {
+	r = r.unite( QRegion( shotR ) );
+    }
+
+    repaint( r );
+}
+
+
+void CannonField::paintEvent( QPaintEvent *e )
+{
+    QRect updateR = e->rect();
+    QPainter p( this );
+
+    if ( gameEnded ) {
+	p.setPen( black );
+	p.setFont( QFont( "Courier", 48, QFont::Bold ) );
+	p.drawText( rect(), AlignCenter, "Game Over" );
+    }
+    if ( updateR.intersects( cannonRect() ) )
+	paintCannon( &p );
+    if ( isShooting() && updateR.intersects( shotRect() ) )
+	paintShot( &p );
+    if ( !gameEnded && updateR.intersects( targetRect() ) )
+	paintTarget( &p );
+}
+
+
+void CannonField::paintShot( QPainter *p )
+{
+    p->setBrush( black );
+    p->setPen( NoPen );
+    p->drawRect( shotRect() );
+}
+
+
+void CannonField::paintTarget( QPainter *p )
+{
+    p->setBrush( red );
+    p->setPen( black );
+    p->drawRect( targetRect() );
+}
+
+
+const QRect barrelRect(33, -4, 15, 8);
+
+void CannonField::paintCannon( QPainter *p )
+{
+    QRect cr = cannonRect();
+    QPixmap pix( cr.size() );
+    pix.fill( this, cr.topLeft() );
+
+    QPainter tmp( &pix );
+    tmp.setBrush( blue );
+    tmp.setPen( NoPen );
+
+    tmp.translate( 0, pix.height() - 1 );
+    tmp.drawPie( QRect( -35,-35, 70, 70 ), 0, 90*16 );
+    tmp.rotate( -ang );
+    tmp.drawRect( barrelRect );
+    tmp.end();
+
+    p->drawPixmap( cr.topLeft(), pix );
+}
+
+
+QRect CannonField::cannonRect() const
+{
+    QRect r( 0, 0, 50, 50 );
+    r.moveBottomLeft( rect().bottomLeft() );
+    return r;
+}
+
+
+QRect CannonField::shotRect() const
+{
+    const double gravity = 4;
+
+    double time      = timerCount / 4.0;
+    double velocity  = shoot_f;
+    double radians   = shoot_ang*3.14159265/180;
+
+    double velx      = velocity*cos( radians );
+    double vely      = velocity*sin( radians );
+    double x0        = ( barrelRect.right()  + 5 )*cos(radians);
+    double y0        = ( barrelRect.right()  + 5 )*sin(radians);
+    double x         = x0 + velx*time;
+    double y         = y0 + vely*time - 0.5*gravity*time*time;
+
+    QRect r = QRect( 0, 0, 6, 6 );
+    r.moveCenter( QPoint( qRound(x), height() - 1 - qRound(y) ) );
+    return r;
+}
+
+
+QRect CannonField::targetRect() const
+{
+    QRect r( 0, 0, 20, 10 );
+    r.moveCenter( QPoint(target.x(),height() - 1 - target.y()) );
+    return r;
+}
+
+
+bool CannonField::isShooting() const
+{
+    return autoShootTimer->isActive();
+}
+
+
+QSizePolicy CannonField::sizePolicy() const
+{
+    return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
+}
diff --git a/tutorial/t13/cannon.h b/tutorial/t13/cannon.h
new file mode 100644
index 0000000..ff1ff82
--- /dev/null
+++ b/tutorial/t13/cannon.h
@@ -0,0 +1,71 @@
+/****************************************************************
+**
+** Definition of CannonField class, Qt tutorial 13
+**
+****************************************************************/
+
+#ifndef CANNON_H
+#define CANNON_H
+
+class QTimer;
+
+
+#include <qwidget.h>
+
+
+class CannonField : public QWidget
+{
+    Q_OBJECT
+public:
+    CannonField( QWidget *parent=0, const char *name=0 );
+
+    int   angle() const { return ang; }
+    int   force() const { return f; }
+    bool  gameOver() const { return gameEnded; }
+    bool  isShooting() const;
+    QSizePolicy sizePolicy() const;
+
+public slots:
+    void  setAngle( int degrees );
+    void  setForce( int newton );
+    void  shoot();
+    void  newTarget();
+    void  setGameOver();
+    void  restartGame();
+
+private slots:
+    void  moveShot();
+
+signals:
+    void  hit();
+    void  missed();
+    void  angleChanged( int );
+    void  forceChanged( int );
+    void  canShoot( bool );
+
+protected:
+    void  paintEvent( QPaintEvent * );
+
+private:
+    void  paintShot( QPainter * );
+    void  paintTarget( QPainter * );
+    void  paintCannon( QPainter * );
+    QRect cannonRect() const;
+    QRect shotRect() const;
+    QRect targetRect() const;
+
+    int ang;
+    int f;
+
+    int timerCount;
+    QTimer * autoShootTimer;
+    float shoot_ang;
+    float shoot_f;
+
+    QPoint target;
+
+    bool gameEnded;
+};
+
+
+#endif // CANNON_H
diff --git a/tutorial/t13/gamebrd.cpp b/tutorial/t13/gamebrd.cpp
new file mode 100644
index 0000000..ffb3228
--- /dev/null
+++ b/tutorial/t13/gamebrd.cpp
@@ -0,0 +1,129 @@
+/****************************************************************
+**
+** Implementation of GameBoard class, Qt tutorial 13
+**
+****************************************************************/
+
+#include "gamebrd.h"
+
+#include <qfont.h>
+#include <qapplication.h>
+#include <qlabel.h>
+#include <qpushbutton.h>
+#include <qlcdnumber.h>
+#include <qlayout.h>
+
+#include "lcdrange.h"
+#include "cannon.h"
+
+GameBoard::GameBoard( QWidget *parent, const char *name )
+        : QWidget( parent, name )
+{
+    QPushButton *quit = new QPushButton( "&Quit", this, "quit" );
+    quit->setFont( QFont( "Times", 18, QFont::Bold ) );
+
+    connect( quit, SIGNAL(clicked()), qApp, SLOT(quit()) );
+
+    LCDRange *angle  = new LCDRange( "ANGLE", this, "angle" );
+    angle->setRange( 5, 70 );
+
+    LCDRange *force  = new LCDRange( "FORCE", this, "force" );
+    force->setRange( 10, 50 );
+
+    cannonField = new CannonField( this, "cannonField" );
+
+    connect( angle, SIGNAL(valueChanged(int)),
+	     cannonField, SLOT(setAngle(int)) );
+    connect( cannonField, SIGNAL(angleChanged(int)),
+	     angle, SLOT(setValue(int)) );
+
+    connect( force, SIGNAL(valueChanged(int)),
+	     cannonField, SLOT(setForce(int)) );
+    connect( cannonField, SIGNAL(forceChanged(int)),
+	     force, SLOT(setValue(int)) );
+
+    connect( cannonField, SIGNAL(hit()),
+	     this, SLOT(hit()) );
+    connect( cannonField, SIGNAL(missed()),
+	     this, SLOT(missed()) );
+
+    QPushButton *shoot = new QPushButton( "&Shoot", this, "shoot" );
+    shoot->setFont( QFont( "Times", 18, QFont::Bold ) );
+
+    connect( shoot, SIGNAL(clicked()), SLOT(fire()) );
+    connect( cannonField, SIGNAL(canShoot(bool)),
+	     shoot, SLOT(setEnabled(bool)) );
+
+    QPushButton *restart 
+	= new QPushButton( "&New Game", this, "newgame" );
+    restart->setFont( QFont( "Times", 18, QFont::Bold ) );
+
+    connect( restart, SIGNAL(clicked()), this, SLOT(newGame()) );
+
+    hits = new QLCDNumber( 2, this, "hits" );
+    shotsLeft = new QLCDNumber( 2, this, "shotsleft" );
+    QLabel *hitsL = new QLabel( "HITS", this, "hitsLabel" );
+    QLabel *shotsLeftL 
+	= new QLabel( "SHOTS LEFT", this, "shotsleftLabel" );
+
+    QGridLayout *grid = new QGridLayout( this, 2, 2, 10 );
+    grid->addWidget( quit, 0, 0 );
+    grid->addWidget( cannonField, 1, 1 );
+    grid->setColStretch( 1, 10 );
+
+    QVBoxLayout *leftBox = new QVBoxLayout;
+    grid->addLayout( leftBox, 1, 0 );
+    leftBox->addWidget( angle );
+    leftBox->addWidget( force );
+
+    QHBoxLayout *topBox = new QHBoxLayout;
+    grid->addLayout( topBox, 0, 1 );
+    topBox->addWidget( shoot );
+    topBox->addWidget( hits );
+    topBox->addWidget( hitsL );
+    topBox->addWidget( shotsLeft );
+    topBox->addWidget( shotsLeftL );
+    topBox->addStretch( 1 );
+    topBox->addWidget( restart );
+
+    angle->setValue( 60 );
+    force->setValue( 25 );
+    angle->setFocus();
+
+    newGame();
+}
+
+
+void GameBoard::fire()
+{
+    if ( cannonField->gameOver() || cannonField->isShooting() )
+	return;
+    shotsLeft->display( shotsLeft->intValue() - 1 );
+    cannonField->shoot();
+}
+
+
+void GameBoard::hit()
+{
+    hits->display( hits->intValue() + 1 );
+    if ( shotsLeft->intValue() == 0 )
+	cannonField->setGameOver();
+    else
+	cannonField->newTarget();
+}
+
+
+void GameBoard::missed()
+{
+    if ( shotsLeft->intValue() == 0 )
+	cannonField->setGameOver();
+}
+
+
+void GameBoard::newGame()
+{
+    shotsLeft->display( 15 );
+    hits->display( 0 );
+    cannonField->restartGame();
+    cannonField->newTarget();
+}
diff --git a/tutorial/t13/gamebrd.h b/tutorial/t13/gamebrd.h
new file mode 100644
index 0000000..1c629a4
--- /dev/null
+++ b/tutorial/t13/gamebrd.h
@@ -0,0 +1,40 @@
+/****************************************************************
+**
+** Definition of GameBoard class, Qt tutorial 13
+**
+****************************************************************/
+
+#ifndef GAMEBRD_H
+#define GAMEBRD_H
+
+#include <qwidget.h>
+
+class QPushButton;
+class LCDRange;
+class QLCDNumber;
+class CannonField;
+
+#include "lcdrange.h"
+#include "cannon.h"
+
+
+class GameBoard : public QWidget
+{
+    Q_OBJECT
+public:
+    GameBoard( QWidget *parent=0, const char *name=0 );
+
+protected slots:
+    void  fire();
+    void  hit();
+    void  missed();
+    void  newGame();
+
+private:
+    QLCDNumber  *hits;
+    QLCDNumber  *shotsLeft;
+    CannonField *cannonField;
+};
+
+
+#endif // GAMEBRD_H
diff --git a/tutorial/t13/lcdrange.cpp b/tutorial/t13/lcdrange.cpp
new file mode 100644
index 0000000..3c91b27
--- /dev/null
+++ b/tutorial/t13/lcdrange.cpp
@@ -0,0 +1,88 @@
+/****************************************************************
+**
+** Implementation of LCDRange class, Qt tutorial 12
+**
+****************************************************************/
+
+#include "lcdrange.h"
+
+#include <qslider.h>
+#include <qlcdnumber.h>
+#include <qlabel.h>
+#include <qlayout.h>
+
+
+LCDRange::LCDRange( QWidget *parent, const char *name )
+        : QWidget( parent, name )
+{
+    init();
+}
+
+
+LCDRange::LCDRange( const char *s, QWidget *parent, const char *name )
+        : QWidget( parent, name )
+{
+    init();
+    setText( s );
+}
+
+
+void LCDRange::init()
+{
+    QLCDNumber *lcd  = new QLCDNumber( 2, this, "lcd"  );
+    slider = new QSlider( Horizontal, this, "slider" );
+    slider->setRange( 0, 99 );
+    slider->setValue( 0 );
+
+    label = new QLabel( " ", this, "label"  );
+    label->setAlignment( AlignCenter );
+
+    connect( slider, SIGNAL(valueChanged(int)),
+	     lcd, SLOT(display(int)) );
+    connect( slider, SIGNAL(valueChanged(int)),
+	     SIGNAL(valueChanged(int)) );
+
+    setFocusProxy( slider );
+
+    QVBoxLayout * l = new QVBoxLayout( this );
+    l->addWidget( lcd, 1 );
+    l->addWidget( slider );
+    l->addWidget( label );
+}
+
+
+int LCDRange::value() const
+{
+    return slider->value();
+}
+
+
+const char *LCDRange::text() const
+{
+    return label->text();
+}
+
+
+void LCDRange::setValue( int value )
+{
+    slider->setValue( value );
+}
+
+
+void LCDRange::setRange( int minVal, int maxVal )
+{
+    if ( minVal < 0 || maxVal > 99 || minVal > maxVal ) {
+	qWarning( "LCDRange::setRange(%d,%d)\n"
+		  "\tRange must be 0..99\n"
+		  "\tand minVal must not be greater than maxVal",
+		  minVal, maxVal );
+	return;
+    }
+    slider->setRange( minVal, maxVal );
+}
+
+
+void LCDRange::setText( const char *s )
+{
+    label->setText( s );
+}
diff --git a/tutorial/t13/lcdrange.h b/tutorial/t13/lcdrange.h
new file mode 100644
index 0000000..2df2686
--- /dev/null
+++ b/tutorial/t13/lcdrange.h
@@ -0,0 +1,42 @@
+/****************************************************************
+**
+** Definition of LCDRange class, Qt tutorial 12
+**
+****************************************************************/
+
+#ifndef LCDRANGE_H
+#define LCDRANGE_H
+
+#include <qwidget.h>
+
+class QSlider;
+class QLabel;
+
+
+class LCDRange : public QWidget
+{
+    Q_OBJECT
+public:
+    LCDRange( QWidget *parent=0, const char *name=0 );
+    LCDRange( const char *s, QWidget *parent=0, const char *name=0 );
+
+    int         value() const;
+    const char *text()  const;
+
+public slots:
+    void setValue( int );
+    void setRange( int minVal, int maxVal );
+    void setText( const char * );
+
+signals:
+    void valueChanged( int );
+
+private:
+    void init();
+
+    QSlider     *slider;
+    QLabel      *label;
+};
+
+
+#endif // LCDRANGE_H
diff --git a/tutorial/t13/main.cpp b/tutorial/t13/main.cpp
new file mode 100644
index 0000000..63f4ea7
--- /dev/null
+++ b/tutorial/t13/main.cpp
@@ -0,0 +1,22 @@
+/****************************************************************
+**
+** Qt tutorial 13
+**
+****************************************************************/
+
+#include <qapplication.h>
+
+#include "gamebrd.h"
+
+
+int main( int argc, char **argv )
+{
+    QApplication::setColorSpec( QApplication::CustomColor );
+    QApplication a( argc, argv );
+
+    GameBoard gb;
+    gb.setGeometry( 100, 100, 500, 355 );
+    a.setMainWidget( &gb );
+    gb.show();
+    return a.exec();
+}
diff --git a/tutorial/t13/t13.pro b/tutorial/t13/t13.pro
new file mode 100644
index 0000000..a670da6
--- /dev/null
+++ b/tutorial/t13/t13.pro
@@ -0,0 +1,13 @@
+TEMPLATE	= app
+CONFIG		+= qt warn_on release
+HEADERS		= cannon.h \
+		  gamebrd.h \
+		  lcdrange.h
+SOURCES		= cannon.cpp \
+		  gamebrd.cpp \
+		  lcdrange.cpp \
+		  main.cpp
+TARGET		= t13
+REQUIRES=full-config
+unix:LIBS += -lm
+