edit.cpp

很牛的GUI源码wxWidgets-2.8.0.zip 可在多种平台下运行.

    StyleSetForeground (wxSTC_STYLE_DEFAULT, wxColour (_T("DARK GREY")));
    StyleSetForeground (wxSTC_STYLE_INDENTGUIDE, wxColour (_T("DARK GREY")));

    // initialize settings
    if (g_CommonPrefs.syntaxEnable) {
        int keywordnr = 0;
        for (Nr = 0; Nr < STYLE_TYPES_COUNT; Nr++) {
            if (curInfo->styles[Nr].type == -1) continue;
            const StyleInfo &curType = g_StylePrefs [curInfo->styles[Nr].type];
            wxFont font (curType.fontsize, wxMODERN, wxNORMAL, wxNORMAL, false,
                         curType.fontname);
            StyleSetFont (Nr, font);
            if (curType.foreground) {
                StyleSetForeground (Nr, wxColour (curType.foreground));
            }
            if (curType.background) {
                StyleSetBackground (Nr, wxColour (curType.background));
            }
            StyleSetBold (Nr, (curType.fontstyle & mySTC_STYLE_BOLD) > 0);
            StyleSetItalic (Nr, (curType.fontstyle & mySTC_STYLE_ITALIC) > 0);
            StyleSetUnderline (Nr, (curType.fontstyle & mySTC_STYLE_UNDERL) > 0);
            StyleSetVisible (Nr, (curType.fontstyle & mySTC_STYLE_HIDDEN) == 0);
            StyleSetCase (Nr, curType.lettercase);
            const wxChar *pwords = curInfo->styles[Nr].words;
            if (pwords) {
                SetKeyWords (keywordnr, pwords);
                keywordnr += 1;
            }
        }
    }

    // set margin as unused
    SetMarginType (m_DividerID, wxSTC_MARGIN_SYMBOL);
    SetMarginWidth (m_DividerID, 0);
    SetMarginSensitive (m_DividerID, false);

    // folding
    SetMarginType (m_FoldingID, wxSTC_MARGIN_SYMBOL);
    SetMarginMask (m_FoldingID, wxSTC_MASK_FOLDERS);
    StyleSetBackground (m_FoldingID, *wxWHITE);
    SetMarginWidth (m_FoldingID, 0);
    SetMarginSensitive (m_FoldingID, false);
    if (g_CommonPrefs.foldEnable) {
        SetMarginWidth (m_FoldingID, curInfo->folds != 0? m_FoldingMargin: 0);
        SetMarginSensitive (m_FoldingID, curInfo->folds != 0);
        SetProperty (_T("fold"), curInfo->folds != 0? _T("1"): _T("0"));
        SetProperty (_T("fold.comment"),
                     (curInfo->folds & mySTC_FOLD_COMMENT) > 0? _T("1"): _T("0"));
        SetProperty (_T("fold.compact"),
                     (curInfo->folds & mySTC_FOLD_COMPACT) > 0? _T("1"): _T("0"));
        SetProperty (_T("fold.preprocessor"),
                     (curInfo->folds & mySTC_FOLD_PREPROC) > 0? _T("1"): _T("0"));
        SetProperty (_T("fold.html"),
                     (curInfo->folds & mySTC_FOLD_HTML) > 0? _T("1"): _T("0"));
        SetProperty (_T("fold.html.preprocessor"),
                     (curInfo->folds & mySTC_FOLD_HTMLPREP) > 0? _T("1"): _T("0"));
        SetProperty (_T("fold.comment.python"),
                     (curInfo->folds & mySTC_FOLD_COMMENTPY) > 0? _T("1"): _T("0"));
        SetProperty (_T("fold.quotes.python"),
                     (curInfo->folds & mySTC_FOLD_QUOTESPY) > 0? _T("1"): _T("0"));
    }
    SetFoldFlags (wxSTC_FOLDFLAG_LINEBEFORE_CONTRACTED |
                  wxSTC_FOLDFLAG_LINEAFTER_CONTRACTED);

    // set spaces and indention
    SetTabWidth (4);
    SetUseTabs (false);
    SetTabIndents (true);
    SetBackSpaceUnIndents (true);
    SetIndent (g_CommonPrefs.indentEnable? 4: 0);

    // others
    SetViewEOL (g_CommonPrefs.displayEOLEnable);
    SetIndentationGuides (g_CommonPrefs.indentGuideEnable);
    SetEdgeColumn (80);
    SetEdgeMode (g_CommonPrefs.longLineOnEnable? wxSTC_EDGE_LINE: wxSTC_EDGE_NONE);
    SetViewWhiteSpace (g_CommonPrefs.whiteSpaceEnable?
                       wxSTC_WS_VISIBLEALWAYS: wxSTC_WS_INVISIBLE);
    SetOvertype (g_CommonPrefs.overTypeInitial);
    SetReadOnly (g_CommonPrefs.readOnlyInitial);
    SetWrapMode (g_CommonPrefs.wrapModeInitial?
                 wxSTC_WRAP_WORD: wxSTC_WRAP_NONE);

    return true;
}

bool Edit::LoadFile ()
{
#if wxUSE_FILEDLG
    // get filname
    if (!m_filename) {
        wxFileDialog dlg (this, _T("Open file"), wxEmptyString, wxEmptyString,
                          _T("Any file (*)|*"), wxFD_OPEN | wxFD_FILE_MUST_EXIST | wxFD_CHANGE_DIR);
        if (dlg.ShowModal() != wxID_OK) return false;
        m_filename = dlg.GetPath();
    }

    // load file
    return LoadFile (m_filename);
#else
    return false;
#endif // wxUSE_FILEDLG
}

bool Edit::LoadFile (const wxString &filename) {

    // load file in edit and clear undo
    if (!filename.empty()) m_filename = filename;
//     wxFile file (m_filename);
//     if (!file.IsOpened()) return false;
    ClearAll ();
//     long lng = file.Length ();
//     if (lng > 0) {
//         wxString buf;
//         wxChar *buff = buf.GetWriteBuf (lng);
//         file.Read (buff, lng);
//         buf.UngetWriteBuf ();
//         InsertText (0, buf);
//     }
//     file.Close();

    wxStyledTextCtrl::LoadFile(m_filename);

    EmptyUndoBuffer();

    // determine lexer language
    wxFileName fname (m_filename);
    InitializePrefs (DeterminePrefs (fname.GetFullName()));

    return true;
}

bool Edit::SaveFile ()
{
#if wxUSE_FILEDLG
    // return if no change
    if (!Modified()) return true;

    // get filname
    if (!m_filename) {
        wxFileDialog dlg (this, _T("Save file"), wxEmptyString, wxEmptyString, _T("Any file (*)|*"),
                          wxFD_SAVE | wxFD_OVERWRITE_PROMPT);
        if (dlg.ShowModal() != wxID_OK) return false;
        m_filename = dlg.GetPath();
    }

    // save file
    return SaveFile (m_filename);
#else
    return false;
#endif // wxUSE_FILEDLG
}

bool Edit::SaveFile (const wxString &filename) {

    // return if no change
    if (!Modified()) return true;

//     // save edit in file and clear undo
//     if (!filename.empty()) m_filename = filename;
//     wxFile file (m_filename, wxFile::write);
//     if (!file.IsOpened()) return false;
//     wxString buf = GetText();
//     bool okay = file.Write (buf);
//     file.Close();
//     if (!okay) return false;
//     EmptyUndoBuffer();
//     SetSavePoint();

//     return true;

    return wxStyledTextCtrl::SaveFile(filename);

}

bool Edit::Modified () {

    // return modified state
    return (GetModify() && !GetReadOnly());
}

//----------------------------------------------------------------------------
// EditProperties
//----------------------------------------------------------------------------

EditProperties::EditProperties (Edit *edit,
                                long style)
        : wxDialog (edit, wxID_ANY, wxEmptyString,
                    wxDefaultPosition, wxDefaultSize,
                    style | wxDEFAULT_DIALOG_STYLE | wxRESIZE_BORDER) {

    // sets the application title
    SetTitle (_("Properties"));
    wxString text;

    // fullname
    wxBoxSizer *fullname = new wxBoxSizer (wxHORIZONTAL);
    fullname->Add (10, 0);
    fullname->Add (new wxStaticText (this, wxID_ANY, _("Full filename"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL);
    fullname->Add (new wxStaticText (this, wxID_ANY, edit->GetFilename()),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL);

    // text info
    wxGridSizer *textinfo = new wxGridSizer (4, 0, 2);
    textinfo->Add (new wxStaticText (this, wxID_ANY, _("Language"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    textinfo->Add (new wxStaticText (this, wxID_ANY, edit->m_language->name),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);
    textinfo->Add (new wxStaticText (this, wxID_ANY, _("Lexer-ID: "),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    text = wxString::Format (_T("%d"), edit->GetLexer());
    textinfo->Add (new wxStaticText (this, wxID_ANY, text),
                   0, wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);
    wxString EOLtype = wxEmptyString;
    switch (edit->GetEOLMode()) {
        case wxSTC_EOL_CR: {EOLtype = _T("CR (Unix)"); break; }
        case wxSTC_EOL_CRLF: {EOLtype = _T("CRLF (Windows)"); break; }
        case wxSTC_EOL_LF: {EOLtype = _T("CR (Macintosh)"); break; }
    }
    textinfo->Add (new wxStaticText (this, wxID_ANY, _("Line endings"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    textinfo->Add (new wxStaticText (this, wxID_ANY, EOLtype),
                   0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);

    // text info box
    wxStaticBoxSizer *textinfos = new wxStaticBoxSizer (
                     new wxStaticBox (this, wxID_ANY, _("Informations")),
                     wxVERTICAL);
    textinfos->Add (textinfo, 0, wxEXPAND);
    textinfos->Add (0, 6);

    // statistic
    wxGridSizer *statistic = new wxGridSizer (4, 0, 2);
    statistic->Add (new wxStaticText (this, wxID_ANY, _("Total lines"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                    0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    text = wxString::Format (_T("%d"), edit->GetLineCount());
    statistic->Add (new wxStaticText (this, wxID_ANY, text),
                    0, wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);
    statistic->Add (new wxStaticText (this, wxID_ANY, _("Total chars"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                    0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    text = wxString::Format (_T("%d"), edit->GetTextLength());
    statistic->Add (new wxStaticText (this, wxID_ANY, text),
                    0, wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);
    statistic->Add (new wxStaticText (this, wxID_ANY, _("Current line"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                    0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    text = wxString::Format (_T("%d"), edit->GetCurrentLine());
    statistic->Add (new wxStaticText (this, wxID_ANY, text),
                    0, wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);
    statistic->Add (new wxStaticText (this, wxID_ANY, _("Current pos"),
                                     wxDefaultPosition, wxSize(80, wxDefaultCoord)),
                    0, wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL|wxLEFT, 4);
    text = wxString::Format (_T("%d"), edit->GetCurrentPos());
    statistic->Add (new wxStaticText (this, wxID_ANY, text),
                    0, wxALIGN_RIGHT|wxALIGN_CENTER_VERTICAL|wxRIGHT, 4);

    // char/line statistics
    wxStaticBoxSizer *statistics = new wxStaticBoxSizer (
                     new wxStaticBox (this, wxID_ANY, _("Statistics")),
                     wxVERTICAL);
    statistics->Add (statistic, 0, wxEXPAND);
    statistics->Add (0, 6);

    // total pane
    wxBoxSizer *totalpane = new wxBoxSizer (wxVERTICAL);
    totalpane->Add (fullname, 0, wxEXPAND | wxLEFT | wxRIGHT | wxTOP, 10);
    totalpane->Add (0, 6);
    totalpane->Add (textinfos, 0, wxEXPAND | wxLEFT | wxRIGHT, 10);
    totalpane->Add (0, 10);
    totalpane->Add (statistics, 0, wxEXPAND | wxLEFT | wxRIGHT, 10);
    totalpane->Add (0, 6);
    wxButton *okButton = new wxButton (this, wxID_OK, _("OK"));
    okButton->SetDefault();
    totalpane->Add (okButton, 0, wxALIGN_CENTER | wxALL, 10);

    SetSizerAndFit (totalpane);

    ShowModal();
}

#if wxUSE_PRINTING_ARCHITECTURE

//----------------------------------------------------------------------------
// EditPrint
//----------------------------------------------------------------------------

EditPrint::EditPrint (Edit *edit, wxChar *title)
              : wxPrintout(title) {
    m_edit = edit;
    m_printed = 0;

}

bool EditPrint::OnPrintPage (int page) {

    wxDC *dc = GetDC();
    if (!dc) return false;

    // scale DC
    PrintScaling (dc);

    // print page
    if (page == 1) m_printed = 0;
    m_printed = m_edit->FormatRange (1, m_printed, m_edit->GetLength(),
                                     dc, dc, m_printRect, m_pageRect);

    return true;
}

bool EditPrint::OnBeginDocument (int startPage, int endPage) {

    if (!wxPrintout::OnBeginDocument (startPage, endPage)) {
        return false;
    }

    return true;
}

void EditPrint::GetPageInfo (int *minPage, int *maxPage, int *selPageFrom, int *selPageTo) {

    // initialize values
    *minPage = 0;
    *maxPage = 0;
    *selPageFrom = 0;
    *selPageTo = 0;

    // scale DC if possible
    wxDC *dc = GetDC();
    if (!dc) return;
    PrintScaling (dc);

    // get print page informations and convert to printer pixels
    wxSize ppiScr;
    GetPPIScreen (&ppiScr.x, &ppiScr.y);
    wxSize page = g_pageSetupData->GetPaperSize();
    page.x = static_cast<int> (page.x * ppiScr.x / 25.4);
    page.y = static_cast<int> (page.y * ppiScr.y / 25.4);
    m_pageRect = wxRect (0,
                         0,
                         page.x,
                         page.y);

    // get margins informations and convert to printer pixels
    wxPoint pt = g_pageSetupData->GetMarginTopLeft();
    int left = pt.x;
    int top = pt.y;
    pt = g_pageSetupData->GetMarginBottomRight();
    int right = pt.x;
    int bottom = pt.y;

    top = static_cast<int> (top * ppiScr.y / 25.4);
    bottom = static_cast<int> (bottom * ppiScr.y / 25.4);
    left = static_cast<int> (left * ppiScr.x / 25.4);
    right = static_cast<int> (right * ppiScr.x / 25.4);

    m_printRect = wxRect (left,
                          top,
                          page.x - (left + right),
                          page.y - (top + bottom));

    // count pages
    while (HasPage (*maxPage)) {
        m_printed = m_edit->FormatRange (0, m_printed, m_edit->GetLength(),
                                       dc, dc, m_printRect, m_pageRect);
        *maxPage += 1;
    }
    if (*maxPage > 0) *minPage = 1;
    *selPageFrom = *minPage;
    *selPageTo = *maxPage;
}

bool EditPrint::HasPage (int WXUNUSED(page)) {

    return (m_printed < m_edit->GetLength());
}

bool EditPrint::PrintScaling (wxDC *dc){

    // check for dc, return if none
    if (!dc) return false;

    // get printer and screen sizing values
    wxSize ppiScr;
    GetPPIScreen (&ppiScr.x, &ppiScr.y);
    if (ppiScr.x == 0) { // most possible guess 96 dpi
        ppiScr.x = 96;
        ppiScr.y = 96;
    }
    wxSize ppiPrt;
    GetPPIPrinter (&ppiPrt.x, &ppiPrt.y);
    if (ppiPrt.x == 0) { // scaling factor to 1
        ppiPrt.x = ppiScr.x;
        ppiPrt.y = ppiScr.y;
    }
    wxSize dcSize = dc->GetSize();
    wxSize pageSize;
    GetPageSizePixels (&pageSize.x, &pageSize.y);

    // set user scale
    float scale_x = (float)(ppiPrt.x * dcSize.x) /
                    (float)(ppiScr.x * pageSize.x);
    float scale_y = (float)(ppiPrt.y * dcSize.y) /
                    (float)(ppiScr.y * pageSize.y);
    dc->SetUserScale (scale_x, scale_y);

    return true;
}

#endif // wxUSE_PRINTING_ARCHITECTURE