1 files changed, 117 insertions, 0 deletions
diff --git a/lib/kopainter/ko_color_wheel.cpp b/lib/kopainter/ko_color_wheel.cpp
new file mode 100644
index 000000000..f309125ca
--- /dev/null
+++ b/lib/kopainter/ko_color_wheel.cpp
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 2004 Sven Langkamp <longamp@reallygood.de>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*/
+
+#include <math.h>
+
+#include <tqpoint.h>
+#include <tqpainter.h>
+#include <tqimage.h>
+
+#include <kdebug.h>
+#include "ko_color_wheel.h"
+
+#define pi 3.14159265
+
+KoColorWheel::KoColorWheel( TQWidget *parent, const char *name ): KXYSelector( parent, name )
+{
+
+}
+
+void KoColorWheel::resizeEvent( TQResizeEvent * )
+{
+    drawWheel(&m_pixmap);
+    setRange( 0, 0, contentsRect().width(), contentsRect().height() );
+}
+
+void KoColorWheel::drawContents( TQPainter *painter )
+{
+    painter->drawPixmap( contentsRect().x(), contentsRect().y(), m_pixmap );
+}
+
+void KoColorWheel::drawWheel( TQPixmap *pixmap )
+{
+    int size = TQMIN(contentsRect().width(), contentsRect().height());
+    TQPoint center(size/2, size/2);
+
+    TQImage image( size, size, 32 );
+    image.fill(colorGroup ().background().pixel());
+
+    TQColor col;
+    int a, b, h, s;
+    uint *p;
+
+    for ( a = size-1; a >= 0; a-- )
+    {
+        p = (uint*) image.scanLine( size - a - 1 );
+        for( b = 0; b < size; b++ )
+        {
+            s = (int)(sqrt(pow(a-center.y(), 2) + pow(b-center.x(), 2))/(size/2)*255);
+            if(s<=255)
+            {
+                h = (int)(atan2( b-center.x(), a-center.y())* 180.0 / pi);
+                if(h<0) h += 360;
+                if(h>360) h -= 360;
+
+                col.setHsv( h, s, 210 );
+                *p = col.rgb();
+            }
+            p++;
+        }
+    }
+    pixmap->convertFromImage( image );
+}
+
+void KoColorWheel::mousePressEvent( TQMouseEvent *e )
+{
+    int size = TQMIN(contentsRect().width(), contentsRect().height());
+    TQPoint center(size/2, size/2);
+
+    int xVal, yVal;
+    valuesFromPosition( e->pos().x() - 2, e->pos().y() - 2, xVal, yVal );
+    setValues( xVal, yVal );
+
+    int h, s;
+
+    s = (int)(sqrt(pow(yVal-center.y(), 2) + pow(xVal-center.x(), 2))/(size/2)*255);
+    if(s>255) s = 255;
+
+    h = (int)(atan2( xVal-center.x(), yVal-center.y())* 180.0 / pi);
+    if(h<0) h += 360;
+    if(h>360) h -= 360;
+
+    m_color.setHSV( h, s, 255);
+    emit valueChanged(m_color);
+}
+
+void KoColorWheel::mouseMoveEvent( TQMouseEvent *e )
+{
+    mousePressEvent( e );
+}
+
+void KoColorWheel::slotSetValue(const KoColor& c)
+{
+    int size = TQMIN(contentsRect().width(), contentsRect().height());
+    TQPoint center(size/2, size/2);
+
+    int xVal, yVal;
+    xVal = (int)(sin(c.H() * pi /180) * c.S() / 255 * (size/2) + center.x());
+    yVal = (int)(cos(c.H() * pi /180) * c.S() / 255 * (size/2) + center.y());
+    setValues( xVal, yVal );
+}
+
+#include "ko_color_wheel.moc"