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Loopp/src/avtk/avtk_sidechain_gain.h

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/*
* Author: Harry van Haaren 2013
* harryhaaren@gmail.com
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef AVTK_SIDECHAIN_GAIN_H
#define AVTK_SIDECHAIN_GAIN_H
#include <FL/Fl_Widget.H>
#include <FL/Fl_Slider.H>
#include <valarray>
#include <string>
#pragma GCC diagnostic ignored "-Wunused-parameter"
namespace Avtk
{
class SidechainGain : public Fl_Slider
{
public:
SidechainGain(int _x, int _y, int _w, int _h, const char *_label = 0):
Fl_Slider(_x, _y, _w, _h, _label)
{
x = _x;
y = _y;
w = _w;
h = _h;
label = _label;
mouseClickedX = 0;
mouseClickedY = 0;
mouseClicked = false;
active = true;
highlight = false;
_threshold = 1.0;
_target = 1.f;
_reduce = 1.f;
_release = 0.5;
_sidechainAmp = 0;
}
void threshold(float t) {_threshold = t; redraw();}
void reduce (float r) {_reduce = r; redraw();}
void release (float r) {_release = r; redraw();}
/// sets the sidechain amplitude
void sidechain(float s) {_sidechainAmp = s; redraw();}
bool active;
bool highlight;
int x, y, w, h;
const char* label;
int mouseClickedX;
int mouseClickedY;
bool mouseClicked;
bool mouseRightClicked;
float _threshold;
float _target;
float _reduce;
float _release;
float _sidechainAmp;
void set_active(bool a)
{
active = a;
redraw();
}
void draw()
{
if (damage() & FL_DAMAGE_ALL)
{
cairo_t *cr = Fl::cairo_cc();
cairo_save( cr );
cairo_set_line_width(cr, 1.5);
// fill background
cairo_rectangle( cr, x, y, w, h);
cairo_set_source_rgb( cr, 28 / 255.f, 28 / 255.f , 28 / 255.f );
cairo_fill_preserve( cr );
cairo_clip( cr );
// set up dashed lines, 1 px off, 1 px on
double dashes[1];
dashes[0] = 2.0;
cairo_set_dash ( cr, dashes, 1, 0.0);
cairo_set_line_width( cr, 1.0);
// loop over each 2nd line, drawing dots
cairo_set_line_width(cr, 1.0);
cairo_set_source_rgb(cr, 0.4,0.4,0.4);
for ( int i = 0; i < 4; i++ )
{
cairo_move_to( cr, x + ((w / 4.f)*i), y );
cairo_line_to( cr, x + ((w / 4.f)*i), y + h );
}
for ( int i = 0; i < 4; i++ )
{
cairo_move_to( cr, x , y + ((h / 4.f)*i) );
cairo_line_to( cr, x + w, y + ((h / 4.f)*i) );
}
cairo_set_source_rgba( cr, 66 / 255.f, 66 / 255.f , 66 / 255.f , 0.5 );
cairo_stroke(cr);
cairo_set_dash ( cr, dashes, 0, 0.0);
// draw threshold / ducked line
cairo_move_to( cr, x + w * 0.750 - (w * 0.5 * (1-_threshold)), y );
cairo_line_to( cr, x + w * 0.750 - (w * 0.5 * (1-_threshold)) + _sidechainAmp* _reduce*( w * 0.5 ), y + h / 2 );
cairo_line_to( cr, x + w * 0.750 - (w * 0.5 * (1-_threshold)), y + h );
cairo_line_to( cr, x + w , y + h );
cairo_line_to( cr, x + w , y );
cairo_close_path( cr );
cairo_set_source_rgba( cr, 0 / 255.f, 153 / 255.f , 255 / 255.f , 0.21 );
cairo_fill_preserve( cr );
cairo_set_source_rgba( cr, 0 / 255.f, 153 / 255.f , 255 / 255.f , 1 );
cairo_stroke( cr );
// _sidechainAmp => arrow
cairo_move_to( cr, x + w * 0.00 * _sidechainAmp, y + h * 0.4 - (h*0.1*_sidechainAmp) );
cairo_line_to( cr, x + w * 0.65 * _sidechainAmp, y + h * 0.4 );
cairo_line_to( cr, x + w * 0.1 + w * 0.65 * _sidechainAmp, y + h * 0.5 );
cairo_line_to( cr, x + w * 0.65 * _sidechainAmp, y + h * 0.6 );
cairo_line_to( cr, x + w * 0.00 * _sidechainAmp, y + h * 0.6 + (h*0.1*_sidechainAmp) );
cairo_close_path( cr );
cairo_set_source_rgba( cr, 1.0, 0.48, 0.f , 0.21 );
cairo_fill_preserve( cr );
cairo_set_source_rgba( cr, 1.0, 0.48, 0.f , 1 );
cairo_stroke( cr );
// _release horizontal line
cairo_move_to( cr, x , y + h * 0.25 + h/2 * _release );
cairo_line_to( cr, x + w, y + h * 0.25 + h/2 * _release );
cairo_set_source_rgba( cr, 1.0, 0.0, 0.f , 1 );
cairo_stroke( cr );
/*
float makeupGainPx = makeupGain * h * 0.5;
float xDist = 0.1 * w;
float yDist = 0.1 * h;
float xThresh = x + (w * 0.25) + (w*0.5) * threshVal;
float yThresh = y + (h * 0.25) + (h*0.5)*(1-threshVal);
float startx = xThresh - xDist;
float starty = yThresh + yDist;
float cp1x = xThresh;
float cp1y = yThresh - makeupGainPx;
float cp2x = xThresh;
float cp2y = yThresh - makeupGainPx;
float endx = xThresh + (xDist*1.2);
float endy = yThresh - (yDist*1.2)*(1-ratioVal) - makeupGainPx;
// normal line (greyed)
cairo_move_to( cr, x , y + h );
cairo_line_to( cr, x + w, y );
cairo_set_source_rgba( cr, 66 / 255.f, 66 / 255.f , 66 / 255.f , 0.5 );
cairo_set_line_width(cr, 1.4);
cairo_stroke( cr );
cairo_move_to( cr, x , y + h - makeupGainPx );
cairo_line_to( cr, startx, starty - makeupGainPx );
// draw curve
cairo_curve_to( cr, cp1x, cp1y, cp2x, cp2y, endx, endy );
cairo_line_to( cr, x + w, y + (h/4)*ratioVal + (h)*(1-threshVal)*(0.5*ratioVal) - makeupGainPx );
cairo_line_to( cr, x + w, y + h );
cairo_line_to( cr, x , y + h );
cairo_close_path(cr);
cairo_set_source_rgba( cr, 0 / 255.f, 153 / 255.f , 255 / 255.f , 0.21 );
cairo_fill_preserve(cr);
cairo_set_source_rgba( cr, 0 / 255.f, 153 / 255.f , 255 / 255.f , 1 );
cairo_set_line_width(cr, 1.5);
cairo_set_line_join( cr, CAIRO_LINE_JOIN_ROUND);
cairo_set_line_cap ( cr, CAIRO_LINE_CAP_ROUND);
cairo_stroke( cr );
*/
// stroke outline
cairo_rectangle(cr, x, y, w, h);
cairo_set_source_rgba( cr, 126 / 255.f, 126 / 255.f , 126 / 255.f , 0.8 );
cairo_set_line_width(cr, 1.9);
cairo_stroke( cr );
if ( !active )
{
// big grey X
cairo_set_line_width(cr, 20.0);
cairo_set_source_rgba(cr, 0.4,0.4,0.4, 0.7);
cairo_move_to( cr, x + (3 * w / 4.f), y + ( h / 4.f ) );
cairo_line_to( cr, x + (w / 4.f), y + ( 3 *h / 4.f ) );
cairo_move_to( cr, x + (w / 4.f), y + ( h / 4.f ) );
cairo_line_to( cr, x + (3 * w / 4.f), y + ( 3 *h / 4.f ) );
cairo_set_line_cap ( cr, CAIRO_LINE_CAP_BUTT);
cairo_stroke( cr );
}
cairo_restore( cr );
}
}
void resize(int X, int Y, int W, int H)
{
Fl_Widget::resize(X,Y,W,H);
x = X;
y = Y;
w = W;
h = H;
redraw();
}
int handle(int event)
{
/*
switch(event)
{
case FL_PUSH:
highlight = 0;
mouseRightClicked = false;
if ( Fl::event_button() == FL_RIGHT_MOUSE )
{
active = !active;
redraw();
mouseRightClicked = true;
do_callback();
}
return 1;
case FL_DRAG:
{
if ( Fl::event_state(FL_BUTTON1) )
{
if ( mouseClicked == false ) // catch the "click" event
{
mouseClickedX = Fl::event_x();
mouseClickedY = Fl::event_y();
mouseClicked = true;
}
float deltaX = mouseClickedX - Fl::event_x();
float deltaY = mouseClickedY - Fl::event_y();
float valX = value();
valX -= deltaX / 100.f;
float valY = makeupGain;
valY += deltaY / 100.f;
if ( valX > 1.0 ) valX = 1.0;
if ( valX < 0.0 ) valX = 0.0;
if ( valY > 1.0 ) valY = 1.0;
if ( valY < 0.0 ) valY = 0.0;
//handle_drag( value + deltaY );
set_value( valX );
makeupGain = valY;
mouseClickedX = Fl::event_x();
mouseClickedY = Fl::event_y();
redraw();
do_callback();
}
}
return 1;
case FL_RELEASE:
mouseRightClicked = false;
if (highlight) {
highlight = 0;
redraw();
do_callback();
}
mouseClicked = false;
return 1;
case FL_SHORTCUT:
if ( test_shortcut() )
{
do_callback();
return 1;
}
return 0;
default:
return Fl_Widget::handle(event);
}
*/
return 0;
}
private:
};
} // Avtk
#endif // AVTK_SIDECHAIN_GAIN_H
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