Add omitted file Fl_Arc_Dial.C

FL/Fl_Arc_Dial.C

@@ -0,0 +1,104 @@
+
+/*******************************************************************************/
+/* Copyright (C) 2008 Jonathan Moore Liles                                     */
+/*                                                                             */
+/* 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; see the file COPYING.  If not,write to the Free Software */
+/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+/*******************************************************************************/
+
+#include "Fl_Arc_Dial.H"
+
+#include <Fl/fl_draw.H>
+#include <Fl/Fl.H>
+
+int
+Fl_Arc_Dial::handle ( int m )
+{
+    /* Fl_Dial and friends should really handle mousewheel, but they don't in FTLK1 */
+
+    switch ( m )
+    {
+        case FL_MOUSEWHEEL:
+        {
+            if ( this != Fl::belowmouse() )
+                return 0;
+
+            int d = Fl::event_dy();
+
+            double v = increment( value(), d );
+
+            if ( v < minimum() )
+                v = minimum();
+            else if ( v > maximum() )
+                v = maximum();
+
+            value( v );
+
+            return 1;
+        }
+    }
+
+    return Fl_Dial::handle( m );
+}
+
+
+void
+Fl_Arc_Dial::draw ( void )
+{
+    int X = x();
+    int Y = y();
+    int W = w();
+    int H = h();
+
+    draw_box();
+    draw_label();
+
+    X += Fl::box_dx(box());
+    Y += Fl::box_dy(box());
+    W -= Fl::box_dw(box());
+    H -= Fl::box_dh(box());
+
+    double angle = ( angle2() - angle1() ) * ( value() - minimum()) / ( maximum() - minimum() ) + angle1();
+
+    fl_line_style( FL_SOLID, W / 6 );
+
+    X += W / 8;
+    Y += H / 8;
+    W -= W / 4;
+    H -= H / 4;
+
+    if ( box() == FL_NO_BOX )
+    {
+        /* draw backgrond arc */
+        fl_color( fl_color_average( FL_BLACK, selection_color(), 0.80f ) );
+        fl_arc( X, Y, W, H, 270 - angle1(), 270 - angle2() );
+    }
+
+    fl_color( selection_color() );
+
+    if ( type() == FL_FILL_DIAL )
+        fl_arc( X, Y, W, H, 270 - angle1(), 270 - angle  );
+    else
+    {
+        const int d = 6;
+
+        /* account for edge conditions */
+        angle = angle < angle1() + d ? angle1() + d : angle;
+        angle = angle > angle2() - d ? angle2() - d : angle;
+
+        fl_arc( X, Y, W, H, 270 - (angle - d), 270 - (angle + d) );
+
+        fl_line_style( FL_SOLID, 0 );
+    }
+}