src/gui/slider.cpp

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#include "gui/gui.h"
#include "gui/slider.h"
using namespace VGUI;


Slider::Slider( Widget* w )
{
        value = default_value = 0.0;
        setting = "";
        center = w->GetCenter();
        name = w->GetName();
        text = w->GetText();
        type = w->GetType();
        tip = w->GetTip();
        rel_width = w->GetRelWidth();
        rel_height = w->GetRelHeight();
        enabled = w->GetEnabled();
        selected = w->GetSelected();
        is_default = w->GetDefault();
        is_cancel = w->GetCancel();
        has_icon = w->GetHasIcon();
        width_auto = w->GetWidthAuto();
        height_auto = w->GetHeightAuto();
        font_size = w->GetFontSize();
        color_r = w->GetColorR();
        color_g = w->GetColorG();
        color_b = w->GetColorB();

        string skin_path = settings.GetSkinPath();
        slider.Load( skin_path + "/textures/widgets/sld_wedge.png", false );
        cursor.Load( skin_path + "/textures/widgets/sld_cursor.png", false );

        wedge_tex_width = 0.148;
        wedge_width = 0.1186;
        wedge_height = 0.1975;

        cursor_width = 0.0370;
        cursor_height = 0.04938;
        cursor_offset = value * ( wedge_width );

        // width = spacing between left of text and wedge + wedge width
        if( width_auto )
        {
                rel_width = 0.3 + wedge_width;
        }

        // height = wedge texture height
        if( height_auto )
        {
                rel_height = cursor_height;
        }
}

Slider::~Slider()
{
}

void Slider::Draw()
{
        Draw( 1.0 );
}

void Slider::Draw( float opacity )
{
        float center_x = center.GetXPercent();
        float center_y = center.GetYPercent();
        float rel_width_half = rel_width / 2.0f;
        float rel_height_half = rel_height / 2.0f;
        cursor_offset = value * ( wedge_width - 0.013 );
        float gfx_opacity = selected ? 0.9 : enabled ? 0.75 : 0.4;
        float opacity_txt = selected ? 0.9 : enabled ? 0.75 : 0.4;

        // draw wedge and cursor
        utility.Draw2D( center_x - rel_width_half + 0.30,
                        center_y - rel_height_half,
                        center_x - rel_width_half + 0.30 + wedge_tex_width,
                        center_y + wedge_height,
                        &slider, 0.0, 0, gfx_opacity * opacity );
        utility.Draw2D( center_x - rel_width_half + 0.30 + cursor_offset + 0.004,
                        center_y - rel_height_half + 0.001,
                        center_x - rel_width_half + 0.30 + cursor_offset + 0.004 + cursor_width,
                        center_y + rel_height_half + 0.006,
                        &cursor, 0.0, 64, gfx_opacity * opacity );

        // draw text
        font.Print( center_x - rel_width_half, center_y - ( font.Height( text.c_str(), 1, font_size ) / 2.0f ), text.c_str(), 1, font_size, color_r, color_g, color_b, opacity_txt );

        // draw tip
        if( selected && ( tip != "" ) )
                font.Print( 0.5 - ( font.Width( tip.c_str(), 1, 6 ) / 2.0f ), 0.90, tip.c_str(), 1, 6, 0.7, 0.7, 0.7, 0.9 * opacity );
}

void Slider::IncValuePress()
{
        if( value < 0.9 )
        {
                value += 0.1;
        }
        else
        {
                value = 1.0;
        }
}

void Slider::IncValueRelease()
{
}

void Slider::DecValuePress()
{
        if( value > 0.1 )
        {
                value -= 0.1;
        }
        else
        {
                value = 0.0;
        }
}

void Slider::DecValueRelease()
{
}

void Slider::Save()
{
        default_value = value;
        settings.Set( setting, value );
}

void Slider::ResetValue()
{
        float default_val;
        settings.Get( setting, default_val );
        SetValue( default_val );
}

bool Slider::MouseOver( float x, float y )
{
        float min_x, min_y, max_x, max_y;
        min_x = center.GetXPercent() - ( rel_width / 2.0f );
        min_y = center.GetYPercent() - ( rel_height / 2.0f );
        max_x = center.GetXPercent() + ( rel_width / 2.0f );
        max_y = center.GetYPercent() + ( rel_height / 2.0f ) + 0.01;

        return ( x > min_x ) && ( x < max_x ) && ( y > min_y ) && ( y < max_y );
}

string Slider::MousePress( float x, float y )
{
        float min_x, max_x, x_len, x_offset, new_value = value;
        min_x = center.GetXPercent() - ( rel_width / 2.0f ) + 0.304;
        max_x = center.GetXPercent() - ( rel_width / 2.0f ) + 0.3 + wedge_width - 0.009;

        if( ( x >= min_x ) && ( x <= max_x ) )
        {
                x_offset = x - min_x;
                x_len = max_x - min_x;

                new_value = x_offset / x_len;
        }
        else if( x < min_x )
        {
                new_value = 0.0;
        }
        else if( x > max_x )
        {
                new_value = 1.0;
        }

        SetValue( new_value );

        return "";
}

string Slider::MouseRelease( float x, float y )
{
        return "";
}

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