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GCCol.cpp
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GCCol.cpp
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/*
Copyright (C) 2019 BrerDawg
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.
*/
//GCCol.cpp
//color picker widget
//v1.01 03-11-11
//v1.02 20-09-2014 //added flag 'changed' which may be read or reset by public code, GCCol sets this when colour is changed by user actions
//also changed callback from 'int (*pCallback)( Fl_Widget *w, int e )', to: void (*pCallback)( Fl_Widget *w, void* e );
//v1.03 07-feb-2017 //added FL_MOUSEWHEEL control of cols, extremes val limits now reached when dragging out past control's borders
//v1.04 03-may-2017 //added 'show_user_col_dlg()', runs when user clicks in the RHS mix col box
#include "GCCol.h"
using namespace std;
GCCol::GCCol( int x, int y, int w, int h, const char *label = 0 ) : Fl_Widget( x, y, w, h, label )
{
//type( 0 );
box( FL_UP_BOX );
//color( FL_BACKGROUND_COLOR );
//selection_color( FL_BACKGROUND_COLOR );
//Fl_Tooltip::enable();
align( FL_ALIGN_LEFT );
//pCallback = 0;
left_button = 0;
capture_col = 0;
obj_r.val = 240; //inital colour
obj_g.val = 200;
obj_b.val = 180;
changed = 0;
showing_col_dlg = 0;
}
GCCol::~GCCol()
{
}
void GCCol::value( string s )
{
sscanf( s.c_str(), "%d,%d,%d", &obj_r.val, &obj_g.val, &obj_b.val );
if( obj_r.val < 0 ) obj_r.val = 0;
if( obj_r.val > cn_gccol_col_max - 1 ) obj_r.val = cn_gccol_col_max - 1;
if( obj_g.val < 0 ) obj_g.val = 0;
if( obj_g.val > cn_gccol_col_max - 1 ) obj_g.val = cn_gccol_col_max - 1;
if( obj_b.val < 0 ) obj_b.val = 0;
if( obj_b.val > cn_gccol_col_max - 1 ) obj_b.val = cn_gccol_col_max - 1;
redraw();
}
void GCCol::set_col_via_str( string s, bool do_callbck )
{
sscanf( s.c_str(), "%d,%d,%d", &obj_r.val, &obj_g.val, &obj_b.val );
if( obj_r.val < 0 ) obj_r.val = 0;
if( obj_r.val > cn_gccol_col_max - 1 ) obj_r.val = cn_gccol_col_max - 1;
if( obj_g.val < 0 ) obj_g.val = 0;
if( obj_g.val > cn_gccol_col_max - 1 ) obj_g.val = cn_gccol_col_max - 1;
if( obj_b.val < 0 ) obj_b.val = 0;
if( obj_b.val > cn_gccol_col_max - 1 ) obj_b.val = cn_gccol_col_max - 1;
if( do_callbck ) do_callback();
redraw();
}
const char* GCCol::value()
{
string s1;
get_col_via_str( s1, ',' );
svalue = s1;
return svalue.c_str();
}
void GCCol::get_col_via_str( string &s, char delim )
{
char sz[ 255 ];
sprintf( sz, "%d%c%d%c%d", obj_r.val, delim, obj_g.val, delim, obj_b.val );
s = sz;
}
int GCCol::get_r()
{
return obj_r.val;
}
int GCCol::get_g()
{
return obj_g.val;
}
int GCCol::get_b()
{
return obj_b.val;
}
void GCCol::set_r( int r, bool do_callbck )
{
obj_r.val = r;
if( r < 0 ) obj_r.val = 0;
if( r > cn_gccol_col_max - 1 ) obj_r.val = cn_gccol_col_max - 1;
if( do_callbck ) do_callback();
redraw();
if( do_callbck ) do_callback();
}
void GCCol::set_g( int g, bool do_callbck )
{
obj_g.val = g;
if( g < 0 ) obj_g.val = 0;
if( g > cn_gccol_col_max - 1 ) obj_g.val = cn_gccol_col_max - 1;
redraw();
if( do_callbck ) do_callback();
}
void GCCol::set_b( int b, bool do_callbck )
{
obj_b.val = b;
if( b < 0 ) obj_b.val = 0;
if( b > cn_gccol_col_max - 1 ) obj_b.val = cn_gccol_col_max - 1;
redraw();
if( do_callbck ) do_callback();
}
bool GCCol::show_user_col_dlg()
{
showing_col_dlg = 1;
unsigned char r = (unsigned char)obj_r.val;
unsigned char g = (unsigned char)obj_g.val;
unsigned char b = (unsigned char)obj_b.val;
if( fl_color_chooser( "Set a Colour", r, g, b ) )
{
obj_r.val = r;
obj_g.val = g;
obj_b.val = b;
showing_col_dlg = 0;
return 1;
}
showing_col_dlg = 0;
return 0;
}
void GCCol::draw()
{
mix_box_ll = x() + cn_gccol_xgap + cn_gccol_col_rec_wid + 2;
mix_box_rr = mix_box_ll + cn_gccol_col_rec_wid - 1;
mix_box_tt = y() + cn_gccol_yoffset;
mix_box_bb = mix_box_tt + h() - 1;
obj_r.x = x() + cn_gccol_xgap;
obj_r.y = y() + cn_gccol_yoffset;
obj_r.wid = cn_gccol_col_rec_wid;
obj_r.hei = cn_gccol_col_rect_hei;
obj_g.x = x() + cn_gccol_xgap;
obj_g.y = y() + cn_gccol_yoffset + cn_gccol_ygap + cn_gccol_col_rect_hei;
obj_g.wid = cn_gccol_col_rec_wid;
obj_g.hei = cn_gccol_col_rect_hei;
obj_b.x = x() + cn_gccol_xgap;
obj_b.y = y() + cn_gccol_yoffset + 2 * cn_gccol_ygap + 2 * cn_gccol_col_rect_hei;
obj_b.wid = cn_gccol_col_rec_wid;
obj_b.hei = cn_gccol_col_rect_hei;
fl_line_style( FL_SOLID );
fl_color( 0, 0, 0 );
fl_rect( x(), y() , w(), h() ); //overall control rectangle
//draw red selection rectangle
fl_rect( obj_r.x, obj_r.y , obj_r.wid, obj_r.hei );
for( int i = 0; i < cn_gccol_col_rec_wid; i++ )
{
fl_color( i * 4, 0, 0 );
// fl_point( x() + obj_r.x + i , y() + obj_r.y );
for( int j = 1; j < 5; j++ )
{
fl_point( obj_r.x + i , obj_r.y + j );
}
}
//draw red cursor pos
fl_color( 255, 255, 255 );
for( int i = 1; i < 5; i++ )
{
int xx = obj_r.x + obj_r.val / ( cn_gccol_col_max / cn_gccol_col_rec_wid );
fl_color( 255, 255, 255 );
// if( xx <= obj_r.x ) xx = obj_r.x + 1;
if( xx > ( obj_r.x + obj_r.wid - 2 ) ) xx = obj_r.x + obj_r.wid - 2;
fl_point( xx , obj_r.y + i );
fl_point( xx + 1 , obj_r.y + i );
}
//draw green selection rectangle
fl_color( 0, 0, 0 );
fl_rect( obj_g.x, obj_g.y , obj_g.wid, obj_g.hei );
for( int i = 0; i < cn_gccol_col_rec_wid; i++ )
{
fl_color( 0, i * 4, 0 );
for( int j = 1; j < 5; j++ )
{
fl_point( obj_g.x + i , obj_g.y + j );
}
}
//draw green cursor pos
fl_color( 255, 255, 255 );
for( int i = 1; i < 5; i++ )
{
int xx = obj_g.x + obj_g.val / ( cn_gccol_col_max / cn_gccol_col_rec_wid );
// if( obj_g.val > cn_gccol_col_max / 2 ) fl_color( 0, 0, 0 );
// else fl_color( 255, 255, 255 );
fl_color( 255, 255, 255 );
if( xx > ( obj_g.x + obj_g.wid - 2 ) ) xx = obj_g.x + obj_g.wid - 2;
fl_point( xx , obj_g.y + i );
fl_point( xx + 1 , obj_g.y + i );
}
//draw blue selection rectangle
fl_color( 0, 0, 0 );
fl_rect( obj_b.x, obj_b.y , obj_b.wid, obj_b.hei );
for( int i = 0; i < cn_gccol_col_rec_wid; i++ )
{
fl_color( 0, 0, i * 4 );
for( int j = 1; j < 5; j++ )
{
fl_point( obj_b.x + i , obj_b.y + j );
}
}
//draw blue cursor pos
fl_color( 255, 255, 255 );
for( int i = 1; i < 5; i++ )
{
int xx = obj_b.x + obj_b.val / ( cn_gccol_col_max / cn_gccol_col_rec_wid );
fl_color( 255, 255, 255 );
if( xx > ( obj_b.x + obj_b.wid - 2 ) ) xx = obj_b.x + obj_b.wid - 2;
fl_point( xx , obj_b.y + i );
fl_point( xx + 1 , obj_b.y + i );
}
//draw summed resultant col
fl_color( 0, 0, 0 );
fl_rect( x() + cn_gccol_col_rec_wid , y() , cn_gccol_col_box_wid, h() );
fl_color( 255, 255, 255 );
fl_rect( x() + cn_gccol_col_rec_wid + 1 , y() + 1 , cn_gccol_col_box_wid - 2, h() - 2 );
fl_color( obj_r.val, obj_g.val, obj_b.val );
fl_rectf( x() + cn_gccol_col_rec_wid + 2 , y() + 2 , cn_gccol_col_box_wid - 4, h() - 4 ); //show summed col
// draw_label();
//fl_rectf( x()+1, y() + 1, w() - 2, h() - 2 , iR[iIndex], iG[iIndex], iB[iIndex] );
}
int GCCol::handle(int e)
{
bool need_redraw = 0;
bool dont_pass_on = 0;
bool do_callbck = 0;
//return Fl_Widget::handle(e);
if ( e & FL_ENTER ) dont_pass_on = 1; //need this for tooltip
if ( e & FL_LEAVE ) dont_pass_on = 1; //need this for tooltip
// return
//printf("Event=%d\n", e );
if ( e & FL_MOVE )
{
curx = Fl::event_x();
cury = Fl::event_y();
bool capture = 0;
if( left_button )
{
//in red rect?
if( capture_col == 1 )
{
obj_r.val = ( curx - obj_r.x ) * cn_gccol_col_max / cn_gccol_col_rec_wid; //adj value
if( obj_r.val < 0 ) obj_r.val = 0;
if( obj_r.val > ( cn_gccol_col_max - 1 ) ) obj_r.val = cn_gccol_col_max - 1; //adj value
do_callbck = 1;
need_redraw = 1;
capture = 1;
}
//in green rect?
if( capture_col == 2 )
{
obj_g.val = ( curx - obj_g.x ) * cn_gccol_col_max / cn_gccol_col_rec_wid; //adj value
if( obj_g.val < 0 ) obj_g.val = 0;
if( obj_g.val > ( cn_gccol_col_max - 1 ) ) obj_g.val = cn_gccol_col_max - 1; //adj value
do_callbck = 1;
need_redraw = 1;
capture = 1;
}
//in blue rect?
if( capture_col == 3 )
{
obj_b.val = ( curx - obj_b.x ) * cn_gccol_col_max / cn_gccol_col_rec_wid; //adj value
if( obj_b.val < 0 ) obj_b.val = 0;
if( obj_b.val > ( cn_gccol_col_max - 1 ) ) obj_b.val = cn_gccol_col_max - 1; //adj value
do_callbck = 1;
need_redraw = 1;
capture = 1;
}
if( ( !capture ) & ( !showing_col_dlg ) )
{
if( ( cury >= mix_box_tt ) & ( cury <= mix_box_bb ) )
{
if( ( curx >= mix_box_ll ) & ( curx <= mix_box_rr ) )
{
// printf("curx: %d, cury: %d\n", curx, cury );
if( show_user_col_dlg() )
{
do_callbck = 1;
changed = 1;
}
}
}
}
}
if( changed ) dont_pass_on = 1;
need_redraw = 1;
}
if ( e == FL_PUSH )
{
// exit(0);
// if ( Fl::visible_focus() && handle( FL_FOCUS )) Fl::focus( this );
if( Fl::event_button() == 1 )
{
curx = Fl::event_x();
cury = Fl::event_y();
left_button = 1;
//in red rect?
if( ( curx > ( obj_r.x ) ) && ( curx < ( obj_r.x + obj_r.wid ) ) )
{
if( ( cury > ( obj_r.y ) ) && ( cury < ( obj_r.y + obj_r.hei ) ) )
{
obj_r.val = ( curx - obj_r.x ) * cn_gccol_col_max / cn_gccol_col_rec_wid; //adj value
capture_col = 1;
do_callbck = 1;
changed = 1;
}
}
//in green rect?
if( ( curx > ( obj_g.x ) ) && ( curx < ( obj_g.x + obj_g.wid ) ) )
{
if( ( cury > ( obj_g.y ) ) && ( cury < ( obj_g.y + obj_g.hei ) ) )
{
obj_g.val = ( curx - obj_g.x ) * cn_gccol_col_max / cn_gccol_col_rec_wid; //adj value
capture_col = 2;
do_callbck = 1;
changed = 1;
}
}
//in blue rect?
if( ( curx > ( obj_b.x ) ) && ( curx < ( obj_b.x + obj_b.wid ) ) )
{
if( ( cury > ( obj_b.y ) ) && ( cury < ( obj_b.y + obj_b.hei ) ) )
{
obj_b.val = ( curx - obj_b.x ) * cn_gccol_col_max / cn_gccol_col_rec_wid; //adj value
capture_col = 3;
do_callbck = 1;
changed = 1;
}
}
dont_pass_on = 1;
need_redraw = 1;
}
}
if ( e == FL_RELEASE )
{
if( Fl::event_button() == 1 )
{
left_button = 0;
capture_col = 0;
dont_pass_on = 1;
}
}
//mousewheel
if ( e == FL_MOUSEWHEEL )
{
int mousewheel = Fl::event_dy();
if( ( curx > ( obj_r.x ) ) && ( curx < ( obj_r.x + obj_r.wid ) ) )
{
if( ( cury > ( obj_r.y ) ) && ( cury < ( obj_r.y + obj_r.hei ) ) )
{
obj_r.val -= mousewheel;
if( obj_r.val < 0 ) obj_r.val = 0;
if( obj_r.val > ( cn_gccol_col_max - 1 ) ) obj_r.val = cn_gccol_col_max - 1; //adj value
do_callbck = 1;
need_redraw = 1;
}
}
if( ( curx > ( obj_g.x ) ) && ( curx < ( obj_g.x + obj_g.wid ) ) )
{
if( ( cury > ( obj_g.y ) ) && ( cury < ( obj_g.y + obj_r.hei ) ) )
{
obj_g.val -= mousewheel;
if( obj_g.val < 0 ) obj_g.val = 0;
if( obj_g.val > ( cn_gccol_col_max - 1 ) ) obj_g.val = cn_gccol_col_max - 1; //adj value
do_callbck = 1;
need_redraw = 1;
}
}
if( ( curx > ( obj_b.x ) ) && ( curx < ( obj_b.x + obj_b.wid ) ) )
{
if( ( cury > ( obj_b.y ) ) && ( cury < ( obj_b.y + obj_r.hei ) ) )
{
obj_b.val -= mousewheel;
if( obj_b.val < 0 ) obj_b.val = 0;
if( obj_b.val > ( cn_gccol_col_max - 1 ) ) obj_b.val = cn_gccol_col_max - 1; //adj value
do_callbck = 1;
need_redraw = 1;
}
}
}
if( need_redraw )
{
redraw();
}
if( do_callbck )
{
do_callback();
// if( pCallback ) (*pCallback)( this, (void*)e ); //do callback?
}
if( !dont_pass_on )
{
return Fl_Widget::handle(e);
}
return 1;
}
/*
void GCCol::set_event_callback(void (*pFunct)( Fl_Widget *w, void* e ) )
{
pCallback = pFunct;
}
*/