1 files changed, 118 insertions, 0 deletions
diff --git a/kasteroids/ledmeter.cpp b/kasteroids/ledmeter.cpp
new file mode 100644
index 00000000..3df87b8f
--- /dev/null
+++ b/kasteroids/ledmeter.cpp
@@ -0,0 +1,118 @@
+/*
+ * KAsteroids - Copyright (c) Martin R. Jones 1997
+ *
+ * Part of the KDE project
+ */
+
+#include <qpainter.h>
+#include "ledmeter.h"
+#include "ledmeter.moc"
+
+KALedMeter::KALedMeter( QWidget *parent ) : QFrame( parent )
+{
+    mCRanges.setAutoDelete( true );
+    mRange = 100;
+    mCount = 20;
+    mCurrentCount = 0;
+    mValue = 0;
+    setMinimumWidth( mCount * 2 + frameWidth() );
+}
+
+void KALedMeter::setRange( int r )
+{
+    mRange = r;
+    if ( mRange < 1 )
+        mRange = 1;
+    setValue( mValue );
+    update();
+}
+
+void KALedMeter::setCount( int c )
+{
+    mCount = c;
+    if ( mCount < 1 )
+        mCount = 1;
+    setMinimumWidth( mCount * 2 + frameWidth() );
+    calcColorRanges();
+    setValue( mValue );
+    update();
+}
+
+void KALedMeter::setValue( int v )
+{
+    mValue = v;
+    if ( mValue > mRange )
+        mValue = mRange;
+    else if ( mValue < 0 )
+        mValue = 0;
+    int c = ( mValue + mRange / mCount - 1 ) * mCount / mRange;
+    if ( c != mCurrentCount )
+    {
+        mCurrentCount = c;
+        update();
+    }
+}
+
+void KALedMeter::addColorRange( int pc, const QColor &c )
+{
+    ColorRange *cr = new ColorRange;
+    cr->mPc = pc;
+    cr->mColor = c;
+    mCRanges.append( cr );
+    calcColorRanges();
+}
+
+void KALedMeter::resizeEvent( QResizeEvent *e )
+{
+    QFrame::resizeEvent( e );
+    int w = ( width() - frameWidth() - 2 ) / mCount * mCount;
+    w += frameWidth() + 2;
+    setFrameRect( QRect( 0, 0, w, height() ) );
+}
+
+void KALedMeter::drawContents( QPainter *p )
+{
+    QRect b = contentsRect();
+
+    unsigned cidx = 0;
+    int ncol = mCount;
+    QColor col = colorGroup().foreground();
+   
+    if ( !mCRanges.isEmpty() )
+    {
+        col = mCRanges.at( cidx )->mColor;
+        ncol = mCRanges.at( cidx )->mValue;
+    }
+    p->setBrush( col );
+    p->setPen( col );
+
+    int lw = b.width() / mCount;
+    int lx = b.left() + 1;
+    for ( int i = 0; i < mCurrentCount; i++, lx += lw )
+    {
+        if ( i > ncol )
+        {
+            if ( ++cidx < mCRanges.count() )
+            {
+                col = mCRanges.at( cidx )->mColor;
+                ncol = mCRanges.at( cidx )->mValue;
+                p->setBrush( col );
+                p->setPen( col );
+            }
+        }
+
+        p->drawRect( lx, b.top() + 1, lw - 1, b.height() - 2 );
+    }
+}
+
+void KALedMeter::calcColorRanges()
+{
+    int prev = 0;
+    ColorRange *cr;
+    for ( cr = mCRanges.first(); cr; cr = mCRanges.next() )
+    {
+        cr->mValue = prev + cr->mPc * mCount / 100;
+        prev = cr->mValue;
+    }
+}
+