message_dlg.cpp

来自「ncbi源码」· C++ 代码 · 共 397 行

/*
 * ===========================================================================
 * PRODUCTION $Log: message_dlg.cpp,v $
 * PRODUCTION Revision 1000.3  2004/06/01 21:05:08  gouriano
 * PRODUCTION PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.10
 * PRODUCTION
 * ===========================================================================
 */

/*  $Id: message_dlg.cpp,v 1000.3 2004/06/01 21:05:08 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:  Mike DiCuccio
 *
 * File Description:
 *
 */

#include <ncbi_pch.hpp>
#include "message_dlg.hpp"
#include <FL/Fl_Pixmap.H>
#include <FL/fl_draw.H>

#include <FL/fl_ask.H>

#include <FL/Fl_Help_View.H>

#include <gui/utils/app_popup.hpp>


BEGIN_NCBI_SCOPE

//
// icons
//
#include "info.xpm"
#include "question.xpm"
#include "exclamation.xpm"


// callback function for links
static const char *s_DoLink(Fl_Widget *w, const char *uri)
{
    CAppPopup::PopupURL(uri);
    return 0;  // tells widget to do nothing
}



CMessageDlg::CMessageDlg(const string& msg, TDialogType type,
                         EDialogIcon icon, EDialogTextMode text_mode)
    : m_Message(msg)
{

    // line-wrap the message if requested
    if (text_mode == eWrap) {
        list<string> lines;
        NStr::Wrap(m_Message, 70, lines);
        m_Message = NStr::Join(lines, "\n");
    }

    //
    // plan our widget sizes and placements
    //

    // left/right/top/bottom margins
    const int margin  = 10;

    // button sizes
    const int button_wid = 80;
    const int button_ht = 25;

    // icon sizes
    const int icon_wid = 64;
    const int icon_ht = 64;

    // label postion
    const int label_x = margin + icon_wid + 5;
    const int label_y = margin;

    // message label
    // we create this first because we need the font information from it
    Fl_Widget* label;
    if (text_mode != eHtml) {
        label = new Fl_Box(label_x, label_y, 5, 5);
    } else {
        Fl_Help_View* hv = new Fl_Help_View(label_x, label_y, 5, 5);
        hv->link(s_DoLink);
        label = hv;
    }
    label->labelsize(12);

    // text label size:
    // we need to compute this, based on its length
    int label_wid = 0;
    int label_ht = 0;
    {{
         int orig_font = fl_font();
         int orig_size = fl_size();
         fl_font(label->labelfont(), label->labelsize());

         string::size_type pos = 0;
         while (pos < m_Message.length()) {
             string::size_type pos1 = m_Message.find_first_of("\n", pos);
             if (pos1 == string::npos) {
                 pos1 = m_Message.length();
             }

             string sub = m_Message.substr(pos, pos1 - pos);
             if (sub.empty()) {
                 sub = " ";
             }
             int w = 0;
             int h = 0;
             fl_measure(sub.c_str(), w, h);
             label_wid = max(label_wid, w);
             label_ht += h;

             pos = pos1 + 1;
         }

         label_ht = max(label_ht, icon_ht);
         fl_font(orig_font, orig_size);
     }}

    label->size(label_wid, label_ht);
    label->align(FL_ALIGN_LEFT | FL_ALIGN_INSIDE);
    if (text_mode != eHtml) {
        label->label(m_Message.c_str());
    } else {
        dynamic_cast<Fl_Help_View *>(label)->value(m_Message.c_str());
    }


    // window size: based on label size + fixed sizes for buttons, icons,
    // margins, etc
    const int window_wid = max(margin * 2 + icon_wid + 5 + label_wid,
                               button_wid * 2 + margin * 3);
    const int window_ht  = margin * 2 + label_ht + 5 + 25;

    // finalize placements, depending on results of layout calculations
    const int icon_x = margin;
    const int icon_y = margin + (label_ht - icon_ht) / 2;
    int button_y = margin + label_ht + 5;

    //
    // button placements - two options:
    //  - darwin-style (centered)
    //  - windows-style (left-justified)
#ifdef NCBI_OS_DARWIN
    int spare_wid = window_wid - button_wid * 2 - margin;
    int button_x = (window_wid - button_wid) / 2;
    int ok_button_x = spare_wid / 2;
    int cancel_button_x = ok_button_x + button_wid + margin;
#else
    int button_x = window_wid - button_wid - margin;
    int ok_button_x = window_wid - button_wid * 2 - margin * 2;
    int cancel_button_x = ok_button_x + button_wid + margin;
#endif

    //
    // now, build our windows
    //

    // create the top-level window
    m_Window.reset(new Fl_Window(window_wid, window_ht));
    m_Window->user_data(this);
    if (type & eDialog_Modal) {
        m_Window->set_modal();
    }

    // icon image: 64x64 pixels, centered and on the left
    Fl_Box* image_box = new Fl_Box(icon_x, icon_y, icon_wid, icon_ht);
    image_box->box(FL_DOWN_FRAME);
    switch (icon) {
    case eIcon_Info:
        fl_beep(FL_BEEP_MESSAGE);
        m_IconImg.reset(new Fl_Pixmap(sc_IconImg_Info));
        break;
    case eIcon_Question:
        fl_beep(FL_BEEP_QUESTION);
        m_IconImg.reset(new Fl_Pixmap(sc_IconImg_Question));
        break;
    case eIcon_Exclamation:
        fl_beep(FL_BEEP_ERROR);
        m_IconImg.reset(new Fl_Pixmap(sc_IconImg_Exclamation));
        break;
    case eIcon_Stop:
        fl_beep(FL_BEEP_ERROR);
        m_IconImg.reset(new Fl_Pixmap(sc_IconImg_Exclamation));
        break;
    }

    if (m_IconImg.get()) {
        image_box->image(m_IconImg.get());
    }

    // now, add the label
    m_Window->add(label);

    //
    // buttons - depends on dialog type; layout is (slightly) platform-specific
    //
    switch ((EDialogType) (type & eDialog_StyleMask)) {
    case eDialog_Ok:
        {{
             Fl_Button* ok_button =
                 new Fl_Return_Button(button_x, button_y,
                                      button_wid, button_ht, "OK");
             ok_button->labelsize(12);
             ok_button->callback((Fl_Callback*)x_callback_OK);
             m_Window->callback((Fl_Callback*)x_callback_OK);
         }}
        break;

    case eDialog_OkCancel:
        {{
             Fl_Button* cancel_button =
                 new Fl_Return_Button(cancel_button_x, button_y,
                                      button_wid, button_ht, "Cancel");
             cancel_button->labelsize(12);
             cancel_button->callback((Fl_Callback*)x_callback_Cancel);
             m_Window->callback((Fl_Callback*)x_callback_Cancel);

             Fl_Button* ok_button =
                 new Fl_Button(ok_button_x, button_y,
                               button_wid, button_ht, "OK");
             ok_button->callback((Fl_Callback*)x_callback_OK);

         }}
        break;

    case eDialog_YesNo:
        {{
             Fl_Button* no_button =
                 new Fl_Return_Button(cancel_button_x, button_y,
                                      button_wid, button_ht, "No");
             no_button->labelsize(12);
             no_button->callback((Fl_Callback*)x_callback_No);
             m_Window->callback((Fl_Callback*)x_callback_No);

             Fl_Button* yes_button =
                 new Fl_Button(ok_button_x, button_y,
                               button_wid, button_ht, "Yes");
             yes_button->labelsize(12);
             yes_button->callback((Fl_Callback*)x_callback_Yes);
         }}
        break;
    }

    // don't forget to end()
    m_Window->end();
}


void CMessageDlg::SetTitle(const string& str)
{
    m_Title = str;
    m_Window->label(m_Title.c_str());
}


void CMessageDlg::x_callback_Cancel(Fl_Widget* w, void* data)
{
    while (w->parent()) {
        w = w->parent();
    }
    static_cast<CMessageDlg*>(w->user_data())->x_OnCancel();
}

void CMessageDlg::x_callback_OK(Fl_Widget* w, void* data)
{
    while (w->parent()) {
        w = w->parent();
    }
    static_cast<CMessageDlg*>(w->user_data())->x_OnOK();
}

void CMessageDlg::x_callback_Yes(Fl_Widget* w, void* data)
{
    while (w->parent()) {
        w = w->parent();
    }
    static_cast<CMessageDlg*>(w->user_data())->x_OnYes();
}

void CMessageDlg::x_callback_No(Fl_Widget* w, void* data)
{
    while (w->parent()) {
        w = w->parent();
    }
    static_cast<CMessageDlg*>(w->user_data())->x_OnNo();
}


void CMessageDlg::x_OnCancel()
{
    m_RetValue = eCancel;
    m_Window->hide();
}


void CMessageDlg::x_OnOK()
{
    m_RetValue = eOK;
    m_Window->hide();
}


void CMessageDlg::x_OnYes()
{
    m_RetValue = eYes;
    m_Window->hide();
}


void CMessageDlg::x_OnNo()
{
    m_RetValue = eNo;
    m_Window->hide();
}


END_NCBI_SCOPE


/*
 * ===========================================================================
 * $Log: message_dlg.cpp,v $
 * Revision 1000.3  2004/06/01 21:05:08  gouriano
 * PRODUCTION: UPGRADED [GCC34_MSVC7] Dev-tree R1.10
 *
 * Revision 1.10  2004/05/28 15:07:26  dicuccio
 * Adjusted .fl files: added ncbi_pch.hpp, fixed fonts.
 *
 * Revision 1.9  2004/05/21 22:27:51  gorelenk
 * Added PCH ncbi_pch.hpp
 *
 * Revision 1.8  2004/03/10 19:27:17  johnson
 * fix m_RetVal/m_RetValue slip
 *
 * Revision 1.7  2004/03/01 15:14:04  dicuccio
 * Inherit from CDialog
 *
 * Revision 1.6  2003/12/03 03:59:57  jcherry
 * Made s_DoLink() really static
 *
 * Revision 1.5  2003/11/07 18:45:23  ucko
 * Properly capitalize Fl_Help_View.H.
 *
 * Revision 1.4  2003/11/07 17:16:44  jcherry
 * Added optional line-wrapping and html display
 *
 * Revision 1.3  2003/10/20 15:14:34  johnson
 * tweaked EDialogType such that one can specify modality as well as button
 * style.
 *
 * Revision 1.2  2003/06/02 11:40:04  dicuccio
 * Fixed compilation for DARWIN - missing spare_wid
 *
 * Revision 1.1  2003/05/30 12:51:11  dicuccio
 * Moved message box code from gui/dialogs/general -> gui/utils, as it is a very
 * basic piece of code that lots of other code depends on (specifically works
 * around circular dependency with various gui/widget libraries)
 *
 * Revision 1.2  2003/05/19 16:40:16  dicuccio
 * Fix compilation error - multiple x_OnCancel() functions
 *
 * Revision 1.1  2003/05/19 13:54:10  dicuccio
 * Initial revision
 *
 * ===========================================================================
 */