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//mytoolbar.cpp

#include "mytoolbar.h"

BEGIN_EVENT_TABLE ( MyToolBar, wxToolBar )
EVT_ERASE_BACKGROUND ( MyToolBar::OnEraseBG )
END_EVENT_TABLE()

// taken from wxStyledNotebook (c) Eran Ifrah <eranif@bezeqint.net>
static wxColor LightColour ( const wxColour& color, int percent )
{
    int rd, gd, bd, high = 0;
    wxColor end_color = wxT ( "WHITE" );
    rd = end_color.Red() - color.Red();
    gd = end_color.Green() - color.Green();
    bd = end_color.Blue() - color.Blue();
    high = 100;

    // We take the percent way of the color from color --> white
    int i = percent;
    int r = color.Red() + ( ( i*rd*100 ) /high ) /100;
    int g = color.Green() + ( ( i*gd*100 ) /high ) /100;
    int b = color.Blue() + ( ( i*bd*100 ) /high ) /100;
    return wxColor ( r, g, b );
}

MyToolBar::MyToolBar (
    wxFrame *parent,
    int id,
    const wxPoint& pos,
    const wxSize& size,
    long style ) :
        wxToolBar ( parent, id, pos, size, style )
{
    /// Override colors
    m_colorTo   = LightColour ( wxSystemSettings::GetColour ( wxSYS_COLOUR_3DFACE ), 0 );
    m_colorFrom = LightColour ( wxSystemSettings::GetColour ( wxSYS_COLOUR_3DFACE ), 80 );//60);
    //m_colorFrom = LightColour(wxSystemSettings::GetColour(wxSYS_COLOUR_MENU), 0);
}

void MyToolBar::OnEraseBG ( wxEraseEvent& event )
{
    wxDC* DC = event.GetDC();
    wxWindow *Window = dynamic_cast<wxWindow *> ( event.GetEventObject() );
    assert ( Window );
    int x, y, w, h;
    x = y = 0;
    Window->GetSize ( &w, &h );
    wxRect rect ( x, y, w, h );
    PaintStraightGradientBox ( DC, rect, m_colorFrom, m_colorTo );
}

// adapted from wxFlatNotebook (c) Eran Ifrah
void MyToolBar::PaintStraightGradientBox ( wxDC *dc, const wxRect& rect, const wxColour& startColor, const wxColour& endColor, bool vertical )
{
    int rd, gd, bd, high = 0;
    rd = endColor.Red() - startColor.Red();
    gd = endColor.Green() - startColor.Green();
    bd = endColor.Blue() - startColor.Blue();

    /// Save the current pen and brush
    wxPen savedPen = dc->GetPen();
    wxBrush savedBrush = dc->GetBrush();

    if ( vertical )
        high = rect.GetHeight()-1;
    else
        high = rect.GetWidth()-1;

    if ( high < 1 )
        return;

    for ( int i = 0; i <= high; ++i )
    {
        int r = startColor.Red() + ( ( i*rd*100 ) /high ) /100;
        int g = startColor.Green() + ( ( i*gd*100 ) /high ) /100;
        int b = startColor.Blue() + ( ( i*bd*100 ) /high ) /100;

        wxPen p ( wxColor ( r, g, b ) );
        dc->SetPen ( p );

        if ( vertical )
            dc->DrawLine ( rect.x, rect.y+i, rect.x+rect.width, rect.y+i );
        else
            dc->DrawLine ( rect.x+i, rect.y, rect.x+i, rect.y+rect.height );
    }

    /// Restore the pen and brush
    dc->SetPen ( savedPen );
    dc->SetBrush ( savedBrush );
}