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/***************************************************************************
* Copyright (C) 2015 by Pere RÃ fols Soler *
* sapista2@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 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., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "toggle_button.h"
#include "colors.h"
#define OUTER_BORDER 3
ToggleButton::ToggleButton ( const Glib::ustring& label )
:Button ( label ),
m_bActive(false)
{
}
ToggleButton::~ToggleButton()
{
}
bool ToggleButton::on_button_release_event ( GdkEventButton* event )
{
if( event->x > OUTER_BORDER &&
event->x < (width - OUTER_BORDER) &&
event->y > OUTER_BORDER &&
event->y < (height - OUTER_BORDER))
{
m_bActive = !m_bActive;
m_sigClick.emit();
}
m_bPress = false;
redraw();
return true;
}
bool ToggleButton::get_active()
{
return m_bActive;
}
void ToggleButton::set_active ( bool active )
{
m_bActive = active;
redraw();
}
bool ToggleButton::on_expose_event(GdkEventExpose* event)
{
Glib::RefPtr<Gdk::Window> window = get_window();
if(window)
{
Gtk::Allocation allocation = get_allocation();
width = allocation.get_width();
height = allocation.get_height();
Cairo::RefPtr<Cairo::Context> cr = window->create_cairo_context();
//Paint backgroud
cr->save();
cr->set_source_rgb(BACKGROUND_R, BACKGROUND_G, BACKGROUND_B);
cr->paint(); //Fill all with background color
cr->restore();
/*
//Draw a box
cr->save();
cr->begin_new_sub_path();
cr->arc( 3 + 0.5, 3 + 0.5, 3, M_PI, -0.5*M_PI);
cr->arc( width - 1 - 3 - 0.5, 3 + 0.5, 3, -0.5*M_PI, 0);
cr->arc( width - 1 - 3 - 0.5, height - 1 - 3 - 0.5, 3, 0.0, 0.5*M_PI);
cr->arc( 3 + 0.5, height - 1 - 3 - 0.5, 3, 0.5*M_PI, M_PI);
cr->close_path();
cr->set_line_width(1);
cr->set_source_rgba(1,1,1, 0.3);
cr->stroke();
cr->restore();
*/
//The button
ToggleButton::drawLedBtn(cr, m_bFocus, m_bActive, m_label.c_str(), OUTER_BORDER, 3);
}
return true;
}
void ToggleButton::drawLedBtn(Cairo::RefPtr< Cairo::Context > cr, bool focus, bool enabled, std::string text, int margin, int radius, double red, double green, double blue)
{
//Draw the FFT enable button
cr->save();
cr->begin_new_sub_path();
cr->arc( margin + radius + 0.5, margin + radius + 0.5, radius, M_PI, -0.5*M_PI);
cr->arc( margin + 3*radius + 0.5, margin + radius + 0.5, radius, -0.5*M_PI, 0);
cr->arc( margin + 3*radius + 0.5, margin + 3*radius + 0.5, radius, 0.0, 0.5*M_PI);
cr->arc( margin + radius + 0.5, margin + 3*radius + 0.5, radius, 0.5*M_PI, M_PI);
cr->close_path();
//Daw focus on LED
if(focus)
{
cr->set_line_width(3.5);
cr->set_source_rgba(0.0, 1.0, 1.0, 0.5);
cr->stroke_preserve();
cr->set_source_rgb(0.1, 0.1, 0.1);
cr->fill_preserve();
}
Cairo::RefPtr< Cairo::RadialGradient > bkg_gradient_ptr = Cairo::RadialGradient::create( margin + 2 * radius - 2, margin + 2 * radius - 2, 0, margin + 2 * radius, margin + 2 * radius, radius*3);
double alpha = 0.3;
if(enabled)
{
alpha = 0.8;
}
bkg_gradient_ptr->add_color_stop_rgba (0.3, red, green, blue, alpha);
bkg_gradient_ptr->add_color_stop_rgba (1.0, 0.7, 0.4, 0.0, alpha);
cr->set_source(bkg_gradient_ptr);
cr->fill_preserve();
cr->set_line_width(1.0);
cr->set_source_rgba(0.1, 0.1, 0.1, 1.0);
cr->stroke();
cr->restore();
//Draw extra birgthness on FFT LED
if(enabled)
{
cr->save();
cr->arc( margin + 2 * radius + 0.5, margin + 2 * radius + 0.5, 4*radius, 0.0, 2.0*M_PI);
bkg_gradient_ptr = Cairo::RadialGradient::create( margin + 2 * radius, margin + 2 * radius, 0, margin + 2 * radius, margin + 2 * radius, radius*4);
bkg_gradient_ptr->add_color_stop_rgba (0.0, 1.0, 1.0, 1.0, 0.4);
bkg_gradient_ptr->add_color_stop_rgba (1.0, 1.0, 1.0, 1.0, 0.0);
cr->set_source(bkg_gradient_ptr);
cr->fill();
cr->restore();
}
//Draw Text FFT
cr->save();
Glib::RefPtr<Pango::Layout> pangoLayout = Pango::Layout::create(cr);
Pango::FontDescription font_desc("sans 11px");
pangoLayout->set_font_description(font_desc);
pangoLayout->set_text(text.c_str());
//a shadow
cr->move_to(5+margin + 4*radius + 1, margin + 2*radius - 5);
cr->set_source_rgba(0.1, 0.1, 0.1, 0.9);
pangoLayout->show_in_cairo_context(cr);
cr->stroke();
//and text
cr->move_to(5+margin + 4*radius, margin + 2*radius - 6);
cr->set_source_rgba(0.9, 0.9, 0.9, 0.7);
pangoLayout->show_in_cairo_context(cr);
cr->stroke();
cr->restore();
}
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