colorbutton.cpp

来自「ncbi源码」· C++ 代码 · 共 237 行

/*
 * ===========================================================================
 * PRODUCTION $Log: colorbutton.cpp,v $
 * PRODUCTION Revision 1000.2  2004/06/01 21:08:46  gouriano
 * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.6
 * PRODUCTION
 * ===========================================================================
 */

/*  $Id: colorbutton.cpp,v 1000.2 2004/06/01 21:08:46 gouriano Exp $
 * ===========================================================================
 *
 *                            PUBLIC DOMAIN NOTICE
 *               National Center for Biotechnology Information
 *
 *  This software/database is a "United States Government Work" under the
 *  terms of the United States Copyright Act.  It was written as part of
 *  the author's official duties as a United States Government employee and
 *  thus cannot be copyrighted.  This software/database is freely available
 *  to the public for use. The National Library of Medicine and the U.S.
 *  Government have not placed any restriction on its use or reproduction.
 *
 *  Although all reasonable efforts have been taken to ensure the accuracy
 *  and reliability of the software and data, the NLM and the U.S.
 *  Government do not and cannot warrant the performance or results that
 *  may be obtained by using this software or data. The NLM and the U.S.
 *  Government disclaim all warranties, express or implied, including
 *  warranties of performance, merchantability or fitness for any particular
 *  purpose.
 *
 *  Please cite the author in any work or product based on this material.
 *
 * ===========================================================================
 *
 * Authors:  Robert G. Smith
 *
 * File Description:
 *    CColorButton: A widget that carries a CGlColor (RGB value) as state.
 *   When clicked it presents a color chooser to change its state.
 *   It displays its color state in a patch or in text format or both.
 *   Its color state is not the same as its FLTK color(), nor is the text
 *   description of the color the FLTK label.
 */
 
 
#include <ncbi_pch.hpp>
#include <gui/widgets/fl/colorbutton.hpp>   // me
// classes I use.
#include <FL/Fl_Color_Chooser.H>

BEGIN_NCBI_SCOPE

const int CColorButton::sm_SwatchInset = 5; // pixels
const int CColorButton::sm_SwatchMinHeight = 10;

CColorButton::CColorButton(int X, int Y, int W, int H, const char *l)
   : Fl_Button(X, Y, W, H, l), 
     m_ColorTextType(eNoText), 
     m_DrawSwatch(true)
{
    box(FL_UP_BOX);
    callback((Fl_Callback*) clickCB);
    when(FL_WHEN_RELEASE);
}

CColorButton::~CColorButton()
{
}


void CColorButton::draw()
{
    Fl_Button::draw();
    
    const CGlColor& cgl = GetGlColor();
    
    // draw our color swatch
    int sx = 0, sy = 0, sh = 0, sw = 0;
    if (GetDrawSwatch()) {
    
        sh = h() - 2*sm_SwatchInset;
        if (sh < sm_SwatchMinHeight) {
            sh = sm_SwatchMinHeight;
        }
        if (GetColorTextType() != eNoText) {
            sw = min(w()/2 - sm_SwatchInset, sh);
            sw = min(sw, w() - 2*sm_SwatchInset);
        } else {
            sw = w() - 2*sm_SwatchInset;
        }
        sx = x() + w() - sw - sm_SwatchInset;
        sy = y() + (h() - sh)/2;
        
        Fl_Color col = fl_rgb_color(cgl.GetRedUC(), cgl.GetGreenUC(), cgl.GetBlueUC());
        draw_box(FL_ENGRAVED_BOX, sx, sy, sw, sh, col);
    }
    
    // draw our color description text
    if ( GetColorTextType() != eNoText) {
        
        string  color_str = ColorToString();
        
        int tx = x() + sm_SwatchInset;
        int ty = y();
        int tw = w() - 2*sm_SwatchInset;
        if (GetDrawSwatch()) {
            tw -= sw;
        }
        int th = h();
        
        int act_tw, act_th;
        fl_measure(color_str.c_str(), act_tw, act_th, 0);
        Fl_Align text_align = (Fl_Align) (FL_ALIGN_CENTER | FL_ALIGN_CLIP);
        if (act_tw > tw) {
            text_align = (Fl_Align) (FL_ALIGN_LEFT | FL_ALIGN_CLIP);
        }
        fl_color(labelcolor());
        fl_draw(color_str.c_str(), tx, ty, tw, th, text_align , 0 , 0);
    }
}


void CColorButton::SetColorTextType(CColorButton::EDrawColorText e)
{
    m_ColorTextType = e;
}


CColorButton::EDrawColorText CColorButton::GetColorTextType(void) const
{
    return m_ColorTextType;
}


void CColorButton::SetDrawSwatch(bool b)
{
    m_DrawSwatch = b;
}


bool CColorButton::GetDrawSwatch(void) const
{
    return m_DrawSwatch;
}


void CColorButton::SetGlColor(const CGlColor& color)
{
    m_GlColor = color;
}


const CGlColor& CColorButton::GetGlColor(void) const
{
    return m_GlColor;
}


void  CColorButton::clickCB(CColorButton* o, void* p) {
    o->x_ClickCB(p);
}


void CColorButton::x_ClickCB(void*) 
{
    const CGlColor& glc = GetGlColor();
    uchar r = glc.GetRedUC();
    uchar g = glc.GetGreenUC();
    uchar b = glc.GetBlueUC();

    if (fl_color_chooser("Pick a color", r, g, b)) {
        SetGlColor(CGlColor(r, g, b));
        redraw();
    }
}


string CColorButton::ColorToString(void) const
{
    const CGlColor& col     = GetGlColor();
    EDrawColorText texttype = GetColorTextType();
    
    if (texttype == CColorButton::eNoText) {
        return kEmptyStr;
    }
        
    CNcbiOstrstream oss;
    
    if (texttype == CColorButton::eHexText) {
        oss << setiosflags(IOS_BASE::uppercase) << hex << setfill('0') << "#"
            << setw(2) << static_cast<int>(col.GetRedUC())
            << setw(2) << static_cast<int>(col.GetBlueUC())
            << setw(2) << static_cast<int>(col.GetGreenUC());
    } else {
        oss << "(" << dec
            << static_cast<int>(col.GetRedUC()) << ","
            << static_cast<int>(col.GetBlueUC()) << ","
            << static_cast<int>(col.GetGreenUC()) << ")";
    }

    return CNcbiOstrstreamToString(oss);
}


END_NCBI_SCOPE

/*
 * ===========================================================================
 * $Log: colorbutton.cpp,v $
 * Revision 1000.2  2004/06/01 21:08:46  gouriano
 * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.6
 *
 * Revision 1.6  2004/05/21 22:27:53  gorelenk
 * Added PCH ncbi_pch.hpp
 *
 * Revision 1.5  2003/11/21 04:02:58  ucko
 * Use setiosflags rather than "uppercase" manipulator lacking in G++ 2.95.
 *
 * Revision 1.4  2003/10/23 16:25:22  dicuccio
 * Fixed compilation error on MSVC
 *
 * Revision 1.3  2003/09/27 13:10:22  dicuccio
 * Minor stule fixes.  Temporarily disable colorbutton pending fix of
 * ColorToString()
 *
 * Revision 1.2  2003/09/26 16:20:13  ucko
 * ColorToString: use CNcbiOstrstream rather than ostringstream, which
 * G++ 2.95 doesn't support.
 *
 * Revision 1.1  2003/09/25 17:11:34  rsmith
 * Initial checkin
 *
 *
 * ===========================================================================
 */