X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4ee14879f2a8114b714a8d6a52b731157a4a13c7..9eee81a4cf3aa063d4089074073c8a76fb56653b:/samples/caret/caret.cpp diff --git a/samples/caret/caret.cpp b/samples/caret/caret.cpp index 2ecaf096a1..760b54a830 100644 --- a/samples/caret/caret.cpp +++ b/samples/caret/caret.cpp @@ -9,18 +9,6 @@ // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -// ============================================================================ -// declarations -// ============================================================================ - -// ---------------------------------------------------------------------------- -// headers -// ---------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "caret.cpp" - #pragma interface "caret.cpp" -#endif - // For compilers that support precompilation, includes "wx/wx.h". #include @@ -63,22 +51,6 @@ public: virtual bool OnInit(); }; -// Define a new frame type: this is going to be our main frame -class MyFrame : public wxFrame -{ -public: - // ctor(s) - MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size); - - // event handlers (these functions should _not_ be virtual) - void OnQuit(wxCommandEvent& event); - void OnAbout(wxCommandEvent& event); - -private: - // any class wishing to process wxWindows events must use this macro - DECLARE_EVENT_TABLE() -}; - // MyCanvas is a canvas on which you can type class MyCanvas: public wxScrolledWindow { @@ -89,6 +61,10 @@ public: wxChar& CharAt(int x, int y) { return *(m_text + x + m_xChars * y); } + // operations + void CreateCaret(); + void MoveCaret(int x, int y); + // caret movement void Home() { m_xCaret = 0; } void End() { m_xCaret = m_xChars - 1; } @@ -105,6 +81,9 @@ public: void OnChar( wxKeyEvent &event ); private: + // move the caret to m_xCaret, m_yCaret + void DoMoveCaret(); + wxFont m_font; // the margin around the text (looks nicer) @@ -126,6 +105,27 @@ private: DECLARE_EVENT_TABLE() }; + +// Define a new frame type: this is going to be our main frame +class MyFrame : public wxFrame +{ +public: + // ctor(s) + MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size); + + // event handlers (these functions should _not_ be virtual) + void OnQuit(wxCommandEvent& event); + void OnAbout(wxCommandEvent& event); + void OnSetBlinkTime(wxCommandEvent& event); + void OnCaretMove(wxCommandEvent& event); + +private: + MyCanvas *m_canvas; + + // any class wishing to process wxWindows events must use this macro + DECLARE_EVENT_TABLE() +}; + // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- @@ -134,13 +134,13 @@ private: enum { // menu items - Minimal_Quit = 1, - Minimal_About, - Minimal_Test1, - Minimal_Test2, + Caret_Quit = 1, + Caret_About, + Caret_SetBlinkTime, + Caret_Move, // controls start here (the numbers are, of course, arbitrary) - Minimal_Text = 1000, + Caret_Text = 1000 }; // ---------------------------------------------------------------------------- @@ -151,8 +151,10 @@ enum // handlers) which process them. It can be also done at run-time, but for the // simple menu events like this the static method is much simpler. BEGIN_EVENT_TABLE(MyFrame, wxFrame) - EVT_MENU(Minimal_Quit, MyFrame::OnQuit) - EVT_MENU(Minimal_About, MyFrame::OnAbout) + EVT_MENU(Caret_Quit, MyFrame::OnQuit) + EVT_MENU(Caret_About, MyFrame::OnAbout) + EVT_MENU(Caret_SetBlinkTime, MyFrame::OnSetBlinkTime) + EVT_MENU(Caret_Move, MyFrame::OnCaretMove) END_EVENT_TABLE() // Create a new application object: this macro will allow wxWindows to create @@ -173,14 +175,11 @@ IMPLEMENT_APP(MyApp) // `Main program' equivalent: the program execution "starts" here bool MyApp::OnInit() { - // Create the main application window - MyFrame *frame = new MyFrame("Minimal wxWindows App", + // create and show the main application window + MyFrame *frame = new MyFrame("Caret wxWindows sample", wxPoint(50, 50), wxSize(450, 340)); - // Show it and tell the application that it's our main window - // @@@ what does it do exactly, in fact? is it necessary here? frame->Show(TRUE); - SetTopWindow(frame); // success: wxApp::OnRun() will be called which will enter the main message // loop and the application will run. If we returned FALSE here, the @@ -202,9 +201,12 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) // create a menu bar wxMenu *menuFile = new wxMenu; - menuFile->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->Append(Caret_SetBlinkTime, "&Blink time...\tCtrl-B"); + menuFile->Append(Caret_Move, "&Move caret\tCtrl-C"); menuFile->AppendSeparator(); - menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program"); + menuFile->Append(Caret_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->AppendSeparator(); + menuFile->Append(Caret_Quit, "E&xit\tAlt-X", "Quit this program"); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; @@ -213,7 +215,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) // ... and attach this menu bar to the frame SetMenuBar(menuBar); - (void) new MyCanvas( this ); + m_canvas = new MyCanvas(this); // create a status bar just for fun (by default with 1 pane only) CreateStatusBar(2); @@ -231,21 +233,32 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event)) { - wxString msg; - msg.Printf( _T("This is the about dialog of minimal sample.\n") - _T("Welcome to %s") -#ifdef wxBETA_NUMBER - _T(" (beta %d)!") -#endif // wxBETA_NUMBER - , wxVERSION_STRING -#ifdef wxBETA_NUMBER - , wxBETA_NUMBER -#endif // wxBETA_NUMBER - ); - - wxMessageBox(msg, "About Minimal", wxOK | wxICON_INFORMATION, this); + wxMessageBox(_T("The caret wxWindows sample.\n© 1999 Vadim Zeitlin"), + _T("About Caret"), wxOK | wxICON_INFORMATION, this); } +void MyFrame::OnCaretMove(wxCommandEvent& WXUNUSED(event)) +{ + m_canvas->MoveCaret(10, 10); +} + +void MyFrame::OnSetBlinkTime(wxCommandEvent& WXUNUSED(event)) +{ + long blinkTime = wxGetNumberFromUser + ( + _T("The caret blink time is the time between two blinks"), + _T("Time in milliseconds:"), + _T("wxCaret sample"), + wxCaret::GetBlinkTime(), 0, 10000, + this + ); + if ( blinkTime != -1 ) + { + wxCaret::SetBlinkTime((int)blinkTime); + m_canvas->CreateCaret(); + wxLogStatus(this, _T("Blink time set to %ld milliseconds."), blinkTime); + } +} // ---------------------------------------------------------------------------- // MyCanvas @@ -266,29 +279,52 @@ MyCanvas::MyCanvas( wxWindow *parent ) { m_text = (wxChar *)NULL; - SetBackgroundColour(* wxWHITE); + SetBackgroundColour(*wxWHITE); + + m_font = wxFont(12, wxFONTFAMILY_TELETYPE, + wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL); + + m_xCaret = m_yCaret = + m_xChars = m_yChars = 0; + + m_xMargin = m_yMargin = 5; - m_font = *wxNORMAL_FONT; + CreateCaret(); +} +MyCanvas::~MyCanvas() +{ + free(m_text); +} + +void MyCanvas::CreateCaret() +{ wxClientDC dc(this); - dc.SetFont( m_font ); + dc.SetFont(m_font); m_heightChar = dc.GetCharHeight(); m_widthChar = dc.GetCharWidth(); wxCaret *caret = new wxCaret(this, m_widthChar, m_heightChar); SetCaret(caret); - m_xCaret = m_yCaret = - m_xChars = m_yChars = 0; - - m_xMargin = m_yMargin = 5; caret->Move(m_xMargin, m_yMargin); caret->Show(); } -MyCanvas::~MyCanvas() +void MyCanvas::MoveCaret(int x, int y) { - free(m_text); + m_xCaret = x; + m_yCaret = y; + + DoMoveCaret(); +} + +void MyCanvas::DoMoveCaret() +{ + wxLogStatus(_T("Caret is at (%d, %d)"), m_xCaret, m_yCaret); + + GetCaret()->Move(m_xMargin + m_xCaret * m_widthChar, + m_yMargin + m_yCaret * m_heightChar); } void MyCanvas::OnSize( wxSizeEvent &event ) @@ -316,10 +352,16 @@ void MyCanvas::OnSize( wxSizeEvent &event ) event.Skip(); } +// NB: this method is horrible inefficient especially because the caret +// needs to be redrawn often and in this case we only have to redraw +// the caret location and not the entire window - in a real program we +// would use GetUpdateRegion() and iterate over rectangles it contains void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) { + wxCaretSuspend cs(this); wxPaintDC dc( this ); PrepareDC( dc ); + dc.Clear(); dc.SetFont( m_font ); @@ -373,23 +415,26 @@ void MyCanvas::OnChar( wxKeyEvent &event ) break; default: - if ( wxIsprint(event.KeyCode()) ) + if ( !event.AltDown() && wxIsprint(event.KeyCode()) ) { - CharAt(m_xCaret, m_yCaret) = (wxChar)event.KeyCode(); + wxChar ch = (wxChar)event.KeyCode(); + CharAt(m_xCaret, m_yCaret) = ch; + + wxCaretSuspend cs(this); + wxClientDC dc(this); + dc.SetFont(m_font); + dc.SetBackgroundMode(wxSOLID); // overwrite old value + dc.DrawText(ch, m_xMargin + m_xCaret * m_widthChar, + m_yMargin + m_yCaret * m_heightChar ); + NextChar(); } else { - // don't refresh - return; + event.Skip(); } } - wxLogStatus(_T("Caret is at (%d, %d)"), m_xCaret, m_yCaret); - - GetCaret()->Move(m_xMargin + m_xCaret * m_widthChar, - m_yMargin + m_yCaret * m_heightChar); - - Refresh(); + DoMoveCaret(); }