1 files changed, 203 insertions, 0 deletions

diff --git a/noncore/tools/clock/analogclock.cpp b/noncore/tools/clock/analogclock.cpp
new file mode 100644
index 0000000..bf358e2
--- a/dev/null
+++ b/noncore/tools/clock/analogclock.cpp
@@ -0,0 +1,203 @@
+/**********************************************************************
+** Copyright (C) 2000-2002 Trolltech AS.  All rights reserved.
+**
+** This file is part of the Qtopia Environment.
+**
+** This file may be distributed and/or modified under the terms of the
+** GNU General Public License version 2 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.
+**
+** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
+** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+**
+** See http://www.trolltech.com/gpl/ for GPL licensing information.
+**
+** Contact info@trolltech.com if any conditions of this licensing are
+** not clear to you.
+**
+**********************************************************************/
+
+#include "analogclock.h"
+
+#include <qlayout.h>
+#include <qpainter.h>
+#include <qtopia/global.h>
+
+#include <math.h>
+
+        const double deg2rad = 0.017453292519943295769;// pi/180
+
+AnalogClock::AnalogClock( QWidget *parent, const char *name )
+    : QFrame( parent, name ), clear(false)
+{
+    setMinimumSize(50,50);
+}
+
+QSizePolicy AnalogClock::sizePolicy() const
+{
+    return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
+}
+
+void AnalogClock::drawContents( QPainter *p )
+{
+#if !defined(NO_DEBUG)
+    static bool first = true;
+    if ( first ) {
+        QTOPIA_PROFILE("first paint event");
+        first = false;
+    }
+#endif
+
+    QRect r = contentsRect();
+
+    if ( r.width() < r.height() ) {
+        r.setY( (r.height() - r.width())/2 );
+        r.setHeight( r.width() );
+    }
+
+    QPoint center( r.x() + r.width() / 2, r.y() + r.height() / 2 );
+
+    const int w_tick = r.width()/300+1;
+    const int w_sec = r.width()/400+1;
+    const int w_hour = r.width()/80+1;
+
+    QPoint l1( r.x() + r.width() / 2, r.y() + 2 );
+    QPoint l2( r.x() + r.width() / 2, r.y() + 8 );
+
+    QPoint h1( r.x() + r.width() / 2, r.y() + r.height() / 4 );
+    QPoint h2( r.x() + r.width() / 2, r.y() + r.height() / 2 );
+
+    QPoint m1( r.x() + r.width() / 2, r.y() + r.height() / 9 );
+    QPoint m2( r.x() + r.width() / 2, r.y() + r.height() / 2 );
+
+    QPoint s1( r.x() + r.width() / 2, r.y() + 8 );
+    QPoint s2( r.x() + r.width() / 2, r.y() + r.height() / 2 );
+
+    QColor color( clear ? backgroundColor() : black );
+    QTime time = clear ? prevTime : currTime;
+
+    if ( clear && prevTime.secsTo(currTime) > 1 ) {
+        p->eraseRect( rect() );
+        return;
+    }
+
+    if ( !clear ) {
+        // draw ticks
+        p->setPen( QPen( color, w_tick ) );
+        for ( int i = 0; i < 12; i++ )
+            p->drawLine( rotate( center, l1, i * 30 ), rotate( center, l2, i * 30 ) );
+    }
+
+    if ( !clear || prevTime.minute() != currTime.minute() ||
+            prevTime.hour() != currTime.hour() ) {
+        // draw hour pointer
+        h1 = rotate( center, h1, 30 * ( time.hour() % 12 ) + time.minute() / 2 );
+        h2 = rotate( center, h2, 30 * ( time.hour() % 12 ) + time.minute() / 2 );
+        p->setPen( color );
+        p->setBrush( color );
+        drawHand( p, h1, h2 );
+    }
+
+    if ( !clear || prevTime.minute() != currTime.minute() ) {
+        // draw minute pointer
+        m1 = rotate( center, m1, time.minute() * 6 );
+        m2 = rotate( center, m2, time.minute() * 6 );
+        p->setPen( color );
+        p->setBrush( color );
+        drawHand( p, m1, m2 );
+    }
+
+    // draw second pointer
+    s1 = rotate( center, s1, time.second() * 6 );
+    s2 = rotate( center, s2, time.second() * 6 );
+    p->setPen( QPen( color, w_sec ) );
+    p->drawLine( s1, s2 );
+
+    // cap
+    p->setBrush(color);
+    p->drawEllipse( center.x()-w_hour/2, center.y()-w_hour/2, w_hour, w_hour );
+
+    if ( !clear )
+        prevTime = currTime;
+}
+
+// Dijkstra's bisection algorithm to find the square root as an integer.
+
+static uint int_sqrt(uint n)
+{
+    if ( n >= UINT_MAX>>2 ) // n must be in the range 0...UINT_MAX/2-1
+        return 2*int_sqrt( n/4 );
+    uint h, p= 0, q= 1, r= n;
+    while ( q <= n )
+        q <<= 2;
+    while ( q != 1 ) {
+        q >>= 2;
+        h= p + q;
+        p >>= 1;
+        if ( r >= h ) {
+            p += q;
+            r -= h;
+        }
+    }
+    return p;
+}
+
+void AnalogClock::drawHand( QPainter *p, QPoint p1, QPoint p2 )
+{
+    int hw = 7;
+    if ( contentsRect().height() < 100 )
+        hw = 5;
+
+    int dx = p2.x() - p1.x();
+    int dy = p2.y() - p1.y();
+    int w = dx*dx+dy*dy;
+    int ix,iy;
+    w = int_sqrt(w*256);
+    iy = w ? (hw * dy * 16)/ w : dy ? 0 : hw;
+    ix = w ? (hw * dx * 16)/ w : dx ? 0 : hw;
+
+    // rounding dependent on sign
+    int nix, niy;
+    if ( ix < 0 ) {
+        nix = ix/2;
+        ix = (ix-1)/2;
+    } else {
+        nix = (ix+1)/2;
+        ix = ix/2;
+    }
+    if ( iy < 0 ) {
+        niy = iy/2;
+        iy = (iy-1)/2;
+    } else {
+        niy = (iy+1)/2;
+        iy = iy/2;
+    }
+
+    QPointArray pa(4);
+    pa[0] = p1;
+    pa[1] = QPoint( p2.x()+iy, p2.y()-nix );
+    pa[2] = QPoint( p2.x()-niy, p2.y()+ix );
+    pa[3] = p1;
+
+    p->drawPolygon( pa );
+}
+
+void AnalogClock::display( const QTime& t )
+{
+    currTime = t;
+    clear = true;
+    repaint( false );
+    clear = false;
+    repaint( false );
+}
+
+QPoint AnalogClock::rotate( QPoint c, QPoint p, int a )
+{
+    double angle = deg2rad * ( - a + 180 );
+    double nx = c.x() - ( p.x() - c.x() ) * cos( angle ) -
+                ( p.y() - c.y() ) * sin( angle );
+    double ny = c.y() - ( p.y() - c.y() ) * cos( angle ) +
+                ( p.x() - c.x() ) * sin( angle );
+    return QPoint( int(nx), int(ny) );
+}