[synfig.git] /

/* === S Y N F I G ========================================================= */
/*!     \file widget_color.cpp
**      \brief Template File
**
**      $Id$
**
**      \legal
**      Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
**
**      This package 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 package 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.
**      \endlegal
*/
/* ========================================================================= */

/* === H E A D E R S ======================================================= */

#ifdef USING_PCH
#       include "pch.h"
#else
#ifdef HAVE_CONFIG_H
#       include <config.h>
#endif

#include "widget_color.h"
#include <cmath>
#include "app.h"
#include <gtkmm/drawingarea.h>

#include "general.h"

#endif

/* === U S I N G =========================================================== */

using namespace std;
using namespace etl;
using namespace synfig;
using namespace studio;

/* === M A C R O S ========================================================= */

/* === G L O B A L S ======================================================= */

/* === P R O C E D U R E S ================================================= */

Gdk::Color
studio::colorconv_synfig2gdk(const synfig::Color &c_)
{
        const synfig::Color c(c_.clamped());
        Gdk::Color ret;
        ret.set_rgb(
                        256*App::gamma.r_F32_to_U8(c.get_r()),
                        256*App::gamma.g_F32_to_U8(c.get_g()),
                        256*App::gamma.b_F32_to_U8(c.get_b())
                );
        return ret;
}

void
studio::render_color_to_window(const Glib::RefPtr<Gdk::Drawable>& window,const Gdk::Rectangle& ca,const synfig::Color &color)
{
        const int height(ca.get_height());
        const int width(ca.get_width());

        const int square_size(height/2);

        Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(window));

        if(color.get_alpha()!=1.0)
        {
                // In this case we need to render the alpha squares

                const Color bg1(Color::blend(color,Color(0.75, 0.75, 0.75),1.0).clamped());
                const Color bg2(Color::blend(color,Color(0.5, 0.5, 0.5),1.0).clamped());

                Gdk::Color gdk_c1(colorconv_synfig2gdk(bg1));
                Gdk::Color gdk_c2(colorconv_synfig2gdk(bg2));

                bool toggle(false);
                for(int i=0;i<width;i+=square_size)
                {
                        const int square_width(min(square_size,width-i));

                        if(toggle)
                        {
                                gc->set_rgb_fg_color(gdk_c1);
                                window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y(), square_width, square_size);

                                gc->set_rgb_fg_color(gdk_c2);
                                window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y()+square_size, square_width, square_size);
                                toggle=false;
                        }
                        else
                        {
                                gc->set_rgb_fg_color(gdk_c2);
                                window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y(), square_width, square_size);

                                gc->set_rgb_fg_color(gdk_c1);
                                window->draw_rectangle(gc, true, ca.get_x()+i, ca.get_y()+square_size, square_width, square_size);
                                toggle=true;
                        }
                }
        }
        else
        {
                // In this case we have a solid color to use
                Gdk::Color gdk_c1(colorconv_synfig2gdk(color));

                gc->set_rgb_fg_color(gdk_c1);
                window->draw_rectangle(gc, true, ca.get_x(), ca.get_y(), width-1, height-1);
        }
        gc->set_rgb_fg_color(Gdk::Color("#ffffff"));
        window->draw_rectangle(gc, false, ca.get_x()+1, ca.get_y()+1, width-3, height-3);
        gc->set_rgb_fg_color(Gdk::Color("#000000"));
        window->draw_rectangle(gc, false, ca.get_x(), ca.get_y(), width-1, height-1);
}

/* === C L A S S E S ======================================================= */


/* === M E T H O D S ======================================================= */

Widget_Color::Widget_Color()
{
        color=Color(0,0,0,0);
        set_size_request(-1,16);

        signal_expose_event().connect(sigc::mem_fun(*this, &studio::Widget_Color::redraw));
        add_events(Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK);

}

Widget_Color::~Widget_Color()
{
}

void
Widget_Color::set_value(const synfig::Color &data)
{
        assert(data.is_valid());
        color=data;
        queue_draw();
}

const synfig::Color &
Widget_Color::get_value()
{
        assert(color.is_valid());
        return color;
}

bool
Widget_Color::on_event(GdkEvent *event)
{
        switch(event->type)
        {
        case GDK_BUTTON_PRESS:
                if(event->button.button==1)
                {
                        signal_activate_();
                        return true;
                }
                if(event->button.button==3)
                {
                        signal_secondary_();
                        return true;
                }
                break;

        default:
                break;
        }
        return false;
}

bool
Widget_Color::redraw(GdkEventExpose */*bleh*/)
{
        //Glib::RefPtr<Gdk::GC> gc(Gdk::GC::create(get_window()));

        const int h(get_height());
        const int w(get_width());

        render_color_to_window(get_window(),Gdk::Rectangle(0,0,w,h),color);

        return true;
}