138 lines
3.9 KiB
C
138 lines
3.9 KiB
C
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/*******************************************************************************/
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/* Copyright (C) 2008 Jonathan Moore Liles */
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/* */
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/* This program is free software; you can redistribute it and/or modify it */
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/* under the terms of the GNU General Public License as published by the */
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/* Free Software Foundation; either version 2 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* This program is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for */
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/* more details. */
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/* */
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/* You should have received a copy of the GNU General Public License along */
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/* with This program; see the file COPYING. If not,write to the Free Software */
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/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*******************************************************************************/
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#include "Fl_Arc_Dial.H"
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#include <FL/fl_draw.H>
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#include <FL/Fl.H>
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#include <string.h>
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#include <stdio.h>
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#include <math.h>
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int
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Fl_Arc_Dial::handle ( int m )
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{
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/* Fl_Dial and friends should really handle mousewheel, but they don't in FTLK1 */
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switch ( m )
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{
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case FL_MOUSEWHEEL:
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{
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if ( this != Fl::belowmouse() )
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return 0;
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int steps = 16;
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if ( Fl::event_ctrl() )
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steps = 128;
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float step = fabs( maximum() - minimum() ) / (float)steps;
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float d = ((float)Fl::event_dy()) * step;
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double v = value() + d;
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if ( maximum() > minimum() )
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{
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if ( v < minimum() )
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v = minimum();
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else if ( v > maximum() )
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v = maximum();
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}
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else
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{
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if ( v > minimum() )
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v = minimum();
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else if ( v < maximum() )
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v = maximum();
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}
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value( v );
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do_callback();
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return 1;
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}
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}
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return Fl_Dial::handle( m );
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}
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void
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Fl_Arc_Dial::draw ( void )
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{
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int X = x();
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int Y = y();
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int W = w();
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int H = h();
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draw_box();
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draw_label();
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X += Fl::box_dx(box());
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Y += Fl::box_dy(box());
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W -= Fl::box_dw(box());
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H -= Fl::box_dh(box());
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double angle = ( angle2() - angle1() ) * ( value() - minimum()) / ( maximum() - minimum() ) + angle1();
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fl_line_style( FL_SOLID, W / 6 );
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X += W / 8;
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Y += H / 8;
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W -= W / 4;
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H -= H / 4;
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if ( box() == FL_NO_BOX )
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{
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/* draw backgrond arc */
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fl_color( fl_color_average( FL_BLACK, selection_color(), 0.80f ) );
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fl_arc( X, Y, W, H, 270 - angle1(), 270 - angle2() );
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}
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fl_color( selection_color() );
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// fl_color( fl_color_average( FL_RED, selection_color(), ( value() - minimum() ) / ( maximum() - minimum() ) ) );
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if ( type() == FL_FILL_DIAL )
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fl_arc( X, Y, W, H, 270 - angle1(), 270 - angle );
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else
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{
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const int d = 6;
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/* account for edge conditions */
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angle = angle < angle1() + d ? angle1() + d : angle;
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angle = angle > angle2() - d ? angle2() - d : angle;
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fl_arc( X, Y, W, H, 270 - (angle - d), 270 - (angle + d) );
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}
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fl_line_style( FL_SOLID, 0 );
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fl_color( labelcolor() );
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char s[10];
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fl_font( FL_HELVETICA, 8 );
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snprintf( s, sizeof( s ), "%.1f", value() );
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fl_draw( s, X, Y, W, H, FL_ALIGN_BOTTOM );
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}
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