///////////////////////////////////////////////////////////////////////////// // Program: wxWindows Widgets Sample // Name: textctrl.cpp // Purpose: part of the widgets sample showing wxTextCtrl // Author: Vadim Zeitlin // Created: 27.03.01 // Id: $Id$ // Copyright: (c) 2001 Vadim Zeitlin // License: wxWindows license ///////////////////////////////////////////////////////////////////////////// // ============================================================================ // declarations // ============================================================================ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- // for compilers that support precompilation, includes "wx/wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif // for all others, include the necessary headers #ifndef WX_PRECOMP #include "wx/log.h" #include "wx/timer.h" #include "wx/button.h" #include "wx/checkbox.h" #include "wx/radiobox.h" #include "wx/statbox.h" #include "wx/stattext.h" #include "wx/textctrl.h" #endif #include "wx/sizer.h" #include "widgets.h" #include "icons/text.xpm" // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- // control ids enum { TextPage_Reset = 100, TextPage_Set, TextPage_Add, TextPage_Insert, TextPage_Clear, TextPage_Load, TextPage_Password, TextPage_WrapLines, TextPage_Textctrl }; // textctrl line number radiobox values enum TextLines { TextLines_Single, TextLines_Multi }; // default values for the controls static const struct ControlValues { TextLines textLines; bool password; bool wraplines; bool readonly; } DEFAULTS = { TextLines_Multi, // multiline FALSE, // not password TRUE, // do wrap lines FALSE // not readonly }; // ---------------------------------------------------------------------------- // TextWidgetsPage // ---------------------------------------------------------------------------- // Define a new frame type: this is going to be our main frame class TextWidgetsPage : public WidgetsPage { public: // ctor(s) and dtor TextWidgetsPage(wxNotebook *notebook, wxImageList *imaglist); virtual ~TextWidgetsPage(); protected: // create an info text contorl wxTextCtrl *CreateInfoText(); // create a horz sizer holding a static text and this text control wxSizer *CreateTextWithLabelSizer(const wxString& label, wxTextCtrl *text, const wxString& label2 = wxEmptyString, wxTextCtrl *text2 = NULL); // event handlers void OnButtonReset(wxCommandEvent& event); void OnButtonClearLog(wxCommandEvent& event); void OnButtonSet(wxCommandEvent& event); void OnButtonAdd(wxCommandEvent& event); void OnButtonInsert(wxCommandEvent& event); void OnButtonClear(wxCommandEvent& event); void OnButtonLoad(wxCommandEvent& event); void OnButtonQuit(wxCommandEvent& event); void OnText(wxCommandEvent& event); void OnTextEnter(wxCommandEvent& event); void OnCheckOrRadioBox(wxCommandEvent& event); void OnUpdateUIClearButton(wxUpdateUIEvent& event); void OnUpdateUIPasswordCheckbox(wxUpdateUIEvent& event); void OnUpdateUIWrapLinesCheckbox(wxUpdateUIEvent& event); void OnUpdateUIResetButton(wxUpdateUIEvent& event); void OnIdle(wxIdleEvent& event); // reset the textctrl parameters void Reset(); // (re)create the textctrl void CreateText(); // is the control currently single line? bool IsSingleLine() const { return m_radioTextLines->GetSelection() == TextLines_Single; } // the controls // ------------ // the radiobox to choose between single and multi line wxRadioBox *m_radioTextLines; // the checkboxes controlling text ctrl styles wxCheckBox *m_chkPassword, *m_chkWrapLines, *m_chkReadonly; // the textctrl itself and the sizer it is in wxTextCtrl *m_text; wxSizer *m_sizerText; // the information text zones wxTextCtrl *m_textPosCur, *m_textRowCur, *m_textColCur, *m_textPosLast, *m_textLineLast, *m_textSelFrom, *m_textSelTo; // and the data to show in them long m_posCur, m_posLast, m_selFrom, m_selTo; private: // any class wishing to process wxWindows events must use this macro DECLARE_EVENT_TABLE(); DECLARE_WIDGETS_PAGE(TextWidgetsPage); }; // ---------------------------------------------------------------------------- // event tables // ---------------------------------------------------------------------------- BEGIN_EVENT_TABLE(TextWidgetsPage, WidgetsPage) EVT_IDLE(TextWidgetsPage::OnIdle) EVT_BUTTON(TextPage_Reset, TextWidgetsPage::OnButtonReset) EVT_BUTTON(TextPage_Clear, TextWidgetsPage::OnButtonClear) EVT_BUTTON(TextPage_Set, TextWidgetsPage::OnButtonSet) EVT_BUTTON(TextPage_Add, TextWidgetsPage::OnButtonAdd) EVT_BUTTON(TextPage_Insert, TextWidgetsPage::OnButtonInsert) EVT_BUTTON(TextPage_Load, TextWidgetsPage::OnButtonLoad) EVT_UPDATE_UI(TextPage_Clear, TextWidgetsPage::OnUpdateUIClearButton) EVT_UPDATE_UI(TextPage_Password, TextWidgetsPage::OnUpdateUIPasswordCheckbox) EVT_UPDATE_UI(TextPage_WrapLines, TextWidgetsPage::OnUpdateUIWrapLinesCheckbox) EVT_UPDATE_UI(TextPage_Reset, TextWidgetsPage::OnUpdateUIResetButton) EVT_TEXT(TextPage_Textctrl, TextWidgetsPage::OnText) EVT_TEXT_ENTER(TextPage_Textctrl, TextWidgetsPage::OnTextEnter) EVT_CHECKBOX(-1, TextWidgetsPage::OnCheckOrRadioBox) EVT_RADIOBOX(-1, TextWidgetsPage::OnCheckOrRadioBox) END_EVENT_TABLE() // ============================================================================ // implementation // ============================================================================ IMPLEMENT_WIDGETS_PAGE(TextWidgetsPage, _T("Text")); // ---------------------------------------------------------------------------- // TextWidgetsPage creation // ---------------------------------------------------------------------------- TextWidgetsPage::TextWidgetsPage(wxNotebook *notebook, wxImageList *imaglist) : WidgetsPage(notebook) { imaglist->Add(wxBitmap(text_xpm)); // init everything m_radioTextLines = (wxRadioBox *)NULL; m_chkPassword = m_chkWrapLines = m_chkReadonly = (wxCheckBox *)NULL; m_text = m_textPosCur = m_textRowCur = m_textColCur = m_textPosLast = m_textLineLast = m_textSelFrom = m_textSelTo = (wxTextCtrl *)NULL; m_sizerText = (wxSizer *)NULL; m_posCur = m_posLast = m_selFrom = m_selTo = -2; // not -1 which means "no selection" // left pane static const wxString modes[] = { _T("single line"), _T("multi line"), }; wxStaticBox *box = new wxStaticBox(this, -1, _T("&Set textctrl parameters")); m_radioTextLines = new wxRadioBox(this, -1, _T("&Number of lines:"), wxDefaultPosition, wxDefaultSize, WXSIZEOF(modes), modes, 1, wxRA_SPECIFY_COLS); wxSizer *sizerLeft = new wxStaticBoxSizer(box, wxVERTICAL); sizerLeft->Add(m_radioTextLines, 0, wxGROW | wxALL, 5); sizerLeft->Add(5, 5, 0, wxGROW | wxALL, 5); // spacer m_chkPassword = CreateCheckBoxAndAddToSizer( sizerLeft, _T("&Password control"), TextPage_Password ); m_chkWrapLines = CreateCheckBoxAndAddToSizer( sizerLeft, _T("Line &wrap"), TextPage_WrapLines ); m_chkReadonly = CreateCheckBoxAndAddToSizer( sizerLeft, _T("&Read-only mode") ); wxButton *btn = new wxButton(this, TextPage_Reset, _T("&Reset")); sizerLeft->Add(btn, 0, wxALIGN_CENTRE_HORIZONTAL | wxALL, 15); // middle pane wxStaticBox *box2 = new wxStaticBox(this, -1, _T("&Change contents:")); wxSizer *sizerMiddleUp = new wxStaticBoxSizer(box2, wxVERTICAL); btn = new wxButton(this, TextPage_Set, _T("&Set text value")); sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 5); btn = new wxButton(this, TextPage_Add, _T("&Append text")); sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 5); btn = new wxButton(this, TextPage_Insert, _T("&Insert text")); sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 5); btn = new wxButton(this, TextPage_Load, _T("&Load file")); sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 5); btn = new wxButton(this, TextPage_Clear, _T("&Clear")); sizerMiddleUp->Add(btn, 0, wxALL | wxGROW, 5); wxStaticBox *box4 = new wxStaticBox(this, -1, _T("&Info:")); wxSizer *sizerMiddleDown = new wxStaticBoxSizer(box4, wxVERTICAL); m_textPosCur = CreateInfoText(); m_textRowCur = CreateInfoText(); m_textColCur = CreateInfoText(); wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL); sizerRow->Add(CreateTextWithLabelSizer ( _T("Current pos:"), m_textPosCur ), 0, wxRIGHT, 5); sizerRow->Add(CreateTextWithLabelSizer ( _T("Col:"), m_textColCur ), 0, wxLEFT | wxRIGHT, 5); sizerRow->Add(CreateTextWithLabelSizer ( _T("Row:"), m_textRowCur ), 0, wxLEFT, 5); sizerMiddleDown->Add(sizerRow, 0, wxALL, 5); m_textLineLast = CreateInfoText(); m_textPosLast = CreateInfoText(); sizerMiddleDown->Add ( CreateTextWithLabelSizer ( _T("Number of lines:"), m_textLineLast, _T("Last position:"), m_textPosLast ), 0, wxALL, 5 ); m_textSelFrom = CreateInfoText(); m_textSelTo = CreateInfoText(); sizerMiddleDown->Add ( CreateTextWithLabelSizer ( _T("Selection: from"), m_textSelFrom, _T("to"), m_textSelTo ), 0, wxALL, 5 ); wxSizer *sizerMiddle = new wxBoxSizer(wxVERTICAL); sizerMiddle->Add(sizerMiddleUp, 0, wxGROW); sizerMiddle->Add(sizerMiddleDown, 1, wxGROW | wxTOP, 5); // right pane wxStaticBox *box3 = new wxStaticBox(this, -1, _T("&Text:")); m_sizerText = new wxStaticBoxSizer(box3, wxHORIZONTAL); Reset(); CreateText(); m_sizerText->SetMinSize(250, 0); // the 3 panes panes compose the upper part of the window wxSizer *sizerTop = new wxBoxSizer(wxHORIZONTAL); sizerTop->Add(sizerLeft, 0, wxGROW | (wxALL & ~wxLEFT), 10); sizerTop->Add(sizerMiddle, 0, wxGROW | wxALL, 10); sizerTop->Add(m_sizerText, 1, wxGROW | (wxALL & ~wxRIGHT), 10); SetAutoLayout(TRUE); SetSizer(sizerTop); sizerTop->Fit(this); } TextWidgetsPage::~TextWidgetsPage() { } // ---------------------------------------------------------------------------- // creation helpers // ---------------------------------------------------------------------------- wxTextCtrl *TextWidgetsPage::CreateInfoText() { static int s_maxWidth = 0; if ( !s_maxWidth ) { // calc it once only GetTextExtent(_T("9999999"), &s_maxWidth, NULL); } wxTextCtrl *text = new wxTextCtrl(this, -1, _T(""), wxDefaultPosition, wxSize(s_maxWidth, -1), wxTE_READONLY); return text; } wxSizer *TextWidgetsPage::CreateTextWithLabelSizer(const wxString& label, wxTextCtrl *text, const wxString& label2, wxTextCtrl *text2) { wxSizer *sizerRow = new wxBoxSizer(wxHORIZONTAL); sizerRow->Add(new wxStaticText(this, -1, label), 0, wxALIGN_CENTRE_VERTICAL | wxRIGHT, 5); sizerRow->Add(text, 0, wxALIGN_CENTRE_VERTICAL); if ( text2 ) { sizerRow->Add(new wxStaticText(this, -1, label2), 0, wxALIGN_CENTRE_VERTICAL | wxLEFT | wxRIGHT, 5); sizerRow->Add(text2, 0, wxALIGN_CENTRE_VERTICAL); } return sizerRow; } // ---------------------------------------------------------------------------- // operations // ---------------------------------------------------------------------------- void TextWidgetsPage::Reset() { m_radioTextLines->SetSelection(DEFAULTS.textLines); m_chkPassword->SetValue(DEFAULTS.password); m_chkWrapLines->SetValue(DEFAULTS.wraplines); m_chkReadonly->SetValue(DEFAULTS.readonly); } void TextWidgetsPage::CreateText() { int flags = 0; switch ( m_radioTextLines->GetSelection() ) { default: wxFAIL_MSG( _T("unexpected radio box selection") ); case TextLines_Single: break; case TextLines_Multi: flags |= wxTE_MULTILINE; m_chkPassword->SetValue(FALSE); break; } if ( m_chkPassword->GetValue() ) flags |= wxTE_PASSWORD; if ( m_chkReadonly->GetValue() ) flags |= wxTE_READONLY; if ( !m_chkWrapLines->GetValue() ) flags |= wxHSCROLL; wxString valueOld; if ( m_text ) { valueOld = m_text->GetValue(); m_sizerText->Remove(m_text); delete m_text; } else { valueOld = _T("Hello, Universe!"); } m_text = new wxTextCtrl(this, TextPage_Textctrl, valueOld, wxDefaultPosition, wxDefaultSize, flags); m_sizerText->Add(m_text, 1, wxALL | (flags & wxTE_MULTILINE ? wxGROW : wxALIGN_TOP), 5); m_sizerText->Layout(); } // ---------------------------------------------------------------------------- // event handlers // ---------------------------------------------------------------------------- void TextWidgetsPage::OnIdle(wxIdleEvent& WXUNUSED(event)) { // update all info texts if ( m_textPosCur ) { long posCur = m_text->GetInsertionPoint(); if ( posCur != m_posCur ) { m_textPosCur->Clear(); m_textRowCur->Clear(); m_textColCur->Clear(); long col, row; m_text->PositionToXY(posCur, &col, &row); *m_textPosCur << posCur; *m_textRowCur << row; *m_textColCur << col; m_posCur = posCur; } } if ( m_textPosLast ) { long posLast = m_text->GetLastPosition(); if ( posLast != m_posLast ) { m_textPosLast->Clear(); *m_textPosLast << posLast; m_posLast = posLast; } } if ( m_textLineLast ) { m_textLineLast->SetValue( wxString::Format(_T("%ld"), m_text->GetNumberOfLines())); } if ( m_textSelFrom && m_textSelTo ) { long selFrom, selTo; m_text->GetSelection(&selFrom, &selTo); if ( selFrom != m_selFrom ) { m_textSelFrom->Clear(); *m_textSelFrom << selFrom; m_selFrom = selFrom; } if ( selTo != m_selTo ) { m_textSelTo->Clear(); *m_textSelTo << selTo; m_selTo = selTo; } } } void TextWidgetsPage::OnButtonReset(wxCommandEvent& WXUNUSED(event)) { Reset(); CreateText(); } void TextWidgetsPage::OnButtonSet(wxCommandEvent& WXUNUSED(event)) { m_text->SetValue(_T("Yellow submarine")); m_text->SetFocus(); } void TextWidgetsPage::OnButtonAdd(wxCommandEvent& WXUNUSED(event)) { m_text->AppendText(_T("here, there and everywhere")); m_text->SetFocus(); } void TextWidgetsPage::OnButtonInsert(wxCommandEvent& WXUNUSED(event)) { m_text->WriteText(_T("is there anybody going to listen to my story")); m_text->SetFocus(); } void TextWidgetsPage::OnButtonClear(wxCommandEvent& WXUNUSED(event)) { m_text->Clear(); m_text->SetFocus(); } void TextWidgetsPage::OnButtonLoad(wxCommandEvent& WXUNUSED(event)) { // search for the file in several dirs where it's likely to be wxPathList pathlist; pathlist.Add(_T(".")); pathlist.Add(_T("..")); pathlist.Add(_T("../../../samples/widgets")); wxString filename = pathlist.FindValidPath(_T("textctrl.cpp")); if ( !filename ) { wxLogError(_T("File textctrl.cpp not found.")); } else // load it { wxStopWatch sw; if ( !m_text->LoadFile(filename) ) { // this is not supposed to happen ... wxLogError(_T("Error loading file.")); } else { long elapsed = sw.Time(); wxLogMessage(_T("Loaded file '%s' in %u.%us"), filename.c_str(), elapsed / 1000, elapsed % 1000); } } } void TextWidgetsPage::OnUpdateUIClearButton(wxUpdateUIEvent& event) { event.Enable(!m_text->GetValue().empty()); } void TextWidgetsPage::OnUpdateUIWrapLinesCheckbox(wxUpdateUIEvent& event) { event.Enable( !IsSingleLine() ); } void TextWidgetsPage::OnUpdateUIPasswordCheckbox(wxUpdateUIEvent& event) { // can't put multiline control in password mode event.Enable( IsSingleLine() ); } void TextWidgetsPage::OnUpdateUIResetButton(wxUpdateUIEvent& event) { event.Enable( (m_radioTextLines->GetSelection() != DEFAULTS.textLines) || (m_chkReadonly->GetValue() != DEFAULTS.readonly) || (m_chkPassword->GetValue() != DEFAULTS.password) || (m_chkWrapLines->GetValue() != DEFAULTS.wraplines) ); } void TextWidgetsPage::OnText(wxCommandEvent& event) { // small hack to suppress the very first message: by then the logging is // not yet redirected and so initial setting of the text value results in // an annoying message box static bool s_firstTime = TRUE; if ( s_firstTime ) { s_firstTime = FALSE; return; } wxLogMessage(_T("Text ctrl value changed")); } void TextWidgetsPage::OnTextEnter(wxCommandEvent& event) { wxLogMessage(_T("Text entered: '%s'"), event.GetString().c_str()); } void TextWidgetsPage::OnCheckOrRadioBox(wxCommandEvent& event) { CreateText(); }