/**
*  Copyright Mikael Högdahl - triyana@users.sourceforge.com
*
*  This source is distributed under the terms of the Q Public License version 1.0,
*  created by Trolltech (www.trolltech.com).
*/

#ifndef Fl_DC_h
#define Fl_DC_h

#include "MHDayChart.h"
#include "MHDC.h"
#include "MHPrice.h"
#include "MHUtil.h"
#include <FL/fl_draw.H>
#include <FL/Fl.H>
#include <FL/Fl_Group.H>
#include <FL/Fl_Scrollbar.H>
#include <FL/Fl_Box.h>
#include <FL/Fl_Positioner.h>



/**
*  Fl_DC is the device context for MHChart to be used with the fltk toolkit.
*/
class Fl_DC : public MHDC, public Fl_Box {
public:
    enum {
                            SCROLL_SIZE   = 20,
                            SCROLL_HEIGHT = 16,
                            SPACE         = 2,
    };

                            Fl_DC (int x, int y, int w, int h, char *label = 0, Fl_Slider* slider =  0);
    virtual                 ~Fl_DC ();

    virtual void            draw ();
    int                     handle (int event);
    void                    resize (int x1, int y1, int x2, int y2);
    void                    slidercb_ ();
    static void             slidercb (Fl_Slider* slider, void* d) {Fl_DC* dc = (Fl_DC*)d; dc->slidercb_();}

    void                    AddChart (MHDayChart* chart);
    void                    BeginClip ();
    void                    Color (int color);
    void                    DrawLine (int x1, int y1, int x2, int y2);
    void                    DrawRect (int x1, int y1, int x2, int y2);
    void                    DrawText (const char* p, int x1, int y1, bool center = false);
    void                    EndClip ();
    int                     GetHeight ();
    int                     GetWidth ();
    int                     GetCharHeight ();
    Fl_Scrollbar*           GetScrollbar ();
    int                     GetStringWidth (const char* pString);
    void                    SetBrushColor (int Color);
    void                    SetPenColor (int Color);

    MHPrice                 aLeft;
    MHPrice                 aRight;
    MHDayChart*             aChart;
    Fl_Box*                 aCanvas;
    Fl_Scrollbar*           aScrollbar;
    Fl_Slider*              aSlider;
};



/**
*  Create a clip rectangle
*/
inline void Fl_DC::BeginClip () {
    fl_push_clip (x(), y(), w(), h());
}



/**
*  Set new background color
*  @param int - Color
*/
inline void Fl_DC::Color (int color) {
    if (color > 0 && color < 255)
        aCanvas->color (Fl_Color(color));
    else
        aCanvas->color (FL_WHITE);
}



/**
*  Delete a clip rectangle
*/
inline void Fl_DC::EndClip () {
    fl_pop_clip();
}



/**
*  Get height of drawing canvas
*  @return int - Height of window in pixels
*/
inline int Fl_DC::GetHeight () {
    return h();
}



/**
*  Get width of drawing canvas
*  @return int - Width of window in pixels
*/
inline int Fl_DC::GetWidth () {
    return w();
}



/**
*  Get height of current font
*  @return int - Height of char in pixels
*/
inline int Fl_DC::GetCharHeight() {
    return GetFontSize();
}



/**
*  Get width in pixels of supplied string
*  @param char* - String to draw
*  @return int - String width in pixels
*/
inline int Fl_DC::GetStringWidth(const char* pString) {
    fl_font (FL_COURIER, GetFontSize());
    return int(fl_width(pString));
}

#endif