hvirtual/plugins/gamma/gammawindow.C

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#include "bcdisplayinfo.h"
#include "gammawindow.h"
#include "language.h"





PLUGIN_THREAD_OBJECT(GammaMain, GammaThread, GammaWindow)






GammaWindow::GammaWindow(GammaMain *client, int x, int y)
 : BC_Window(client->gui_string, x,
        y,
        400, 
        350, 
        400, 
        350, 
        0, 
        0)
{ 
        this->client = client; 
}

int GammaWindow::create_objects()
{
        int x = 10, y = 10;
        add_subwindow(histogram = new BC_SubWindow(x, 
                y, 
                get_w() - x * 2, 
                get_h() - 150, 
                WHITE));
        y += histogram->get_h() + 10;

        BC_Title *title;
        add_tool(title = new BC_Title(x, y, _("Maximum:")));
        x += title->get_w() + 10;
        add_tool(max_slider = new MaxSlider(client, 
                this, 
                x, 
                y, 
                190));
        x += max_slider->get_w() + 10;
        add_tool(max_text = new MaxText(client,
                this,
                x,
                y,
                100));
        y += max_text->get_h() + 10;
        x = 10;
        add_tool(automatic = new GammaAuto(client, x, y));

        y += automatic->get_h() + 10;
        add_tool(title = new BC_Title(x, y, _("Gamma:")));
        x += title->get_w() + 10;
        add_tool(gamma_slider = new GammaSlider(client, 
                this, 
                x, 
                y, 
                190));
        x += gamma_slider->get_w() + 10;
        add_tool(gamma_text = new GammaText(client,
                this,
                x,
                y,
                100));
        y += gamma_text->get_h() + 10;
        x = 10;

        add_tool(plot = new GammaPlot(client, x, y));
        y += plot->get_h() + 10;

        add_tool(new GammaColorPicker(client, this, x, y));

        show_window();
        flush();
        return 0;
}

void GammaWindow::update()
{
        max_slider->update(client->config.max);
        max_text->update(client->config.max);
        gamma_slider->update(client->config.gamma);
        gamma_text->update(client->config.gamma);
        automatic->update(client->config.automatic);
        plot->update(client->config.plot);
        update_histogram();
}

void GammaWindow::update_histogram()
{
        histogram->clear_box(0, 0, histogram->get_w(), histogram->get_h());
        if(client->engine)
        {
                int max = 0;
                histogram->set_color(MEGREY);
                for(int i = 0; i < histogram->get_w(); i++)
                {
                        int x1 = (int64_t)i * HISTOGRAM_SIZE / histogram->get_w();
                        int x2 = (int64_t)(i + 1) * HISTOGRAM_SIZE / histogram->get_w();
                        if(x2 == x1) x2++;
                        int accum = 0;
                        for(int x = x1; x < x2; x++)
                        {
                                accum += client->engine->accum[x];
                        }
                        if(accum > max) max = accum;
                }
                for(int i = 0; i < histogram->get_w(); i++)
                {
                        int x1 = (int64_t)i * HISTOGRAM_SIZE / histogram->get_w();
                        int x2 = (int64_t)(i + 1) * HISTOGRAM_SIZE / histogram->get_w();
                        if(x2 == x1) x2++;
                        int accum = 0;
                        for(int x = x1; x < x2; x++)
                        {
                                accum += client->engine->accum[x];
                        }

                        int h = (int)(log(accum) / log(max) * histogram->get_h());
                        histogram->draw_line(i, 
                                histogram->get_h(), 
                                i, 
                                histogram->get_h() - h);
                }
        }

        histogram->set_color(GREEN);
        int y1 = histogram->get_h();
        float scale = 1.0 / client->config.max;
        float gamma = client->config.gamma - 1.0;
        float max = client->config.max;
        for(int i = 1; i < histogram->get_w(); i++)
        {
                float in = (float)i / histogram->get_w();
                float out = in * (scale * pow(in * 2 / max, gamma));
                int y2 = (int)(histogram->get_h() - out * histogram->get_h());
                histogram->draw_line(i - 1, y1, i, y2);
                y1 = y2;
        }
        histogram->flash();
}

WINDOW_CLOSE_EVENT(GammaWindow)

MaxSlider::MaxSlider(GammaMain *client, 
        GammaWindow *gui, 
        int x, 
        int y,
        int w)
 : BC_FSlider(x, 
        y, 
        0, 
        w, 
        w,
        0.0, 
        1.0, 
        client->config.max)
{
        this->client = client;
        this->gui = gui;
        set_precision(0.01);
}

int MaxSlider::handle_event()
{
        client->config.max = get_value();
        gui->max_text->update(client->config.max);
        gui->update_histogram();
        client->send_configure_change();
        return 1;
}

MaxText::MaxText(GammaMain *client,
        GammaWindow *gui,
        int x,
        int y,
        int w)
 : BC_TextBox(x, y, w, 1, client->config.max)
{
        this->client = client;
        this->gui = gui;
}

int MaxText::handle_event()
{
        client->config.max = atof(get_text());
        gui->max_slider->update(client->config.max);
        client->send_configure_change();
        return 1;
}

GammaSlider::GammaSlider(GammaMain *client, 
        GammaWindow *gui, 
        int x, 
        int y,
        int w)
 : BC_FSlider(x, 
        y, 
        0, 
        w, 
        w,
        0.0, 
        1.0, 
        client->config.gamma)
{
        this->client = client;
        this->gui = gui;
        set_precision(0.01);
}

int GammaSlider::handle_event()
{
        client->config.gamma = get_value();
        gui->gamma_text->update(client->config.gamma);
        gui->update_histogram();
        client->send_configure_change();
        return 1;
}

GammaText::GammaText(GammaMain *client,
        GammaWindow *gui,
        int x,
        int y,
        int w)
 : BC_TextBox(x, y, w, 1, client->config.gamma)
{
        this->client = client;
        this->gui = gui;
}

int GammaText::handle_event()
{
        client->config.gamma = atof(get_text());
        gui->gamma_slider->update(client->config.gamma);
        client->send_configure_change();
        return 1;
}

GammaAuto::GammaAuto(GammaMain *client, int x, int y)
 : BC_CheckBox(x, 
        y, 
        client->config.automatic, 
        _("Automatic"))
{
        this->plugin = client;
}

int GammaAuto::handle_event()
{
        plugin->config.automatic = get_value();
        plugin->send_configure_change();
        return 1;
}


GammaPlot::GammaPlot(GammaMain *plugin, int x, int y)
 : BC_CheckBox(x, y, plugin->config.plot, _("Plot histogram"))
{
        this->plugin = plugin;
}
int GammaPlot::handle_event()
{
        plugin->config.plot = get_value();
        plugin->send_configure_change();
        return 1;
}


GammaColorPicker::GammaColorPicker(GammaMain *plugin, 
        GammaWindow *gui, 
        int x, 
        int y)
 : BC_GenericButton(x, y, _("Use Color Picker"))
{
        this->plugin = plugin;
        this->gui = gui;
}

int GammaColorPicker::handle_event()
{
// Get colorpicker value
        float red = plugin->get_red();
        float green = plugin->get_green();
        float blue = plugin->get_blue();
// Get maximum value
        plugin->config.max = MAX(red, green);
        plugin->config.max = MAX(plugin->config.max, blue);
        gui->max_text->update(plugin->config.max);
        gui->max_slider->update(plugin->config.max);
        plugin->send_configure_change();
        return 1;       
}

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