X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/926076161327c12d8535c72235f91cee6d316281..34326da778583ca8eab95f2e41738da2852a5a16:/samples/caret/caret.cpp?ds=sidebyside diff --git a/samples/caret/caret.cpp b/samples/caret/caret.cpp index 9142ef3094..a9c44ca2f9 100644 --- a/samples/caret/caret.cpp +++ b/samples/caret/caret.cpp @@ -9,41 +9,30 @@ // 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 +#include "wx/wxprec.h" #ifdef __BORLANDC__ #pragma hdrstop #endif // for all others, include the necessary headers (this file is usually all you -// need because it includes almost all - - #include + #include "wx/wx.h" + #include "wx/log.h" #endif #include "wx/caret.h" +#include "wx/numdlg.h" // ---------------------------------------------------------------------------- -// ressources +// resources // ---------------------------------------------------------------------------- + // the application icon -#if defined(__WXGTK__) || defined(__WXMOTIF__) - #include "mondrian.xpm" +#ifndef wxHAS_IMAGES_IN_RESOURCES + #include "../sample.xpm" #endif // ---------------------------------------------------------------------------- @@ -63,22 +52,6 @@ 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 +62,11 @@ public: wxChar& CharAt(int x, int y) { return *(m_text + x + m_xChars * y); } + // operations + void SetFontSize(int fontSize); + void CreateCaret(); + void MoveCaret(int x, int y); + // caret movement void Home() { m_xCaret = 0; } void End() { m_xCaret = m_xChars - 1; } @@ -105,7 +83,12 @@ public: void OnChar( wxKeyEvent &event ); private: - wxCaret m_caret; + // move the caret to m_xCaret, m_yCaret + void DoMoveCaret(); + + // update the geometry + void ChangeSize(); + wxFont m_font; // the margin around the text (looks nicer) @@ -127,6 +110,28 @@ 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 OnSetFontSize(wxCommandEvent& event); + void OnCaretMove(wxCommandEvent& event); + +private: + MyCanvas *m_canvas; + + // any class wishing to process wxWidgets events must use this macro + DECLARE_EVENT_TABLE() +}; + // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- @@ -135,28 +140,32 @@ private: enum { // menu items - Minimal_Quit = 1, - Minimal_About, - Minimal_Test1, - Minimal_Test2, + Caret_Quit = 1, + Caret_About, + Caret_SetBlinkTime, + Caret_SetFontSize, + Caret_Move, // controls start here (the numbers are, of course, arbitrary) - Minimal_Text = 1000, + Caret_Text = 1000 }; // ---------------------------------------------------------------------------- -// event tables and other macros for wxWindows +// event tables and other macros for wxWidgets // ---------------------------------------------------------------------------- -// the event tables connect the wxWindows events with the functions (event +// the event tables connect the wxWidgets events with the functions (event // 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_SetFontSize, MyFrame::OnSetFontSize) + EVT_MENU(Caret_Move, MyFrame::OnCaretMove) END_EVENT_TABLE() -// Create a new application object: this macro will allow wxWindows to create +// Create a new application object: this macro will allow wxWidgets to create // the application object during program execution (it's better than using a // static object for many reasons) and also declares the accessor function // wxGetApp() which will return the reference of the right type (i.e. MyApp and @@ -174,19 +183,19 @@ 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", + if ( !wxApp::OnInit() ) + return false; + + // create and show the main application window + MyFrame *frame = new MyFrame(wxT("Caret wxWidgets 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); + frame->Show(true); // success: wxApp::OnRun() will be called which will enter the main message - // loop and the application will run. If we returned FALSE here, the + // loop and the application will run. If we returned false here, the // application would exit immediately. - return TRUE; + return true; } // ---------------------------------------------------------------------------- @@ -195,30 +204,36 @@ bool MyApp::OnInit() // frame constructor MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) - : wxFrame((wxFrame *)NULL, -1, title, pos, size) + : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size) { // set the frame icon - SetIcon(wxICON(mondrian)); + SetIcon(wxICON(sample)); // create a menu bar wxMenu *menuFile = new wxMenu; - menuFile->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog"); + menuFile->Append(Caret_SetBlinkTime, wxT("&Blink time...\tCtrl-B")); + menuFile->Append(Caret_SetFontSize, wxT("&Font size...\tCtrl-S")); + menuFile->Append(Caret_Move, wxT("&Move caret\tCtrl-C")); + menuFile->AppendSeparator(); + menuFile->Append(Caret_About, wxT("&About\tCtrl-A"), wxT("Show about dialog")); menuFile->AppendSeparator(); - menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program"); + menuFile->Append(Caret_Quit, wxT("E&xit\tAlt-X"), wxT("Quit this program")); // now append the freshly created menu to the menu bar... wxMenuBar *menuBar = new wxMenuBar; - menuBar->Append(menuFile, "&File"); + menuBar->Append(menuFile, wxT("&File")); // ... and attach this menu bar to the frame SetMenuBar(menuBar); - - (void) new MyCanvas( this ); + m_canvas = new MyCanvas(this); + +#if wxUSE_STATUSBAR // create a status bar just for fun (by default with 1 pane only) CreateStatusBar(2); - SetStatusText("Welcome to wxWindows!"); + SetStatusText(wxT("Welcome to wxWidgets!")); +#endif // wxUSE_STATUSBAR } @@ -226,27 +241,55 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size) void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event)) { - // TRUE is to force the frame to close - Close(TRUE); + // true is to force the frame to close + Close(true); } 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(wxT("The caret wxWidgets sample.\n(c) 1999 Vadim Zeitlin"), + wxT("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 + ( + wxT("The caret blink time is the time between two blinks"), + wxT("Time in milliseconds:"), + wxT("wxCaret sample"), + wxCaret::GetBlinkTime(), 0, 10000, + this + ); + if ( blinkTime != -1 ) + { + wxCaret::SetBlinkTime((int)blinkTime); + m_canvas->CreateCaret(); + wxLogStatus(this, wxT("Blink time set to %ld milliseconds."), blinkTime); + } } +void MyFrame::OnSetFontSize(wxCommandEvent& WXUNUSED(event)) +{ + long fontSize = wxGetNumberFromUser + ( + wxT("The font size also determines the caret size so\nthis demonstrates resizing the caret."), + wxT("Font size (in points):"), + wxT("wxCaret sample"), + 12, 1, 100, + this + ); + + if ( fontSize != -1 ) + { + m_canvas->SetFontSize((int)fontSize); + } +} // ---------------------------------------------------------------------------- // MyCanvas @@ -261,29 +304,22 @@ BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) END_EVENT_TABLE() MyCanvas::MyCanvas( wxWindow *parent ) - : wxScrolledWindow( parent, -1, + : wxScrolledWindow( parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxSUNKEN_BORDER ) { m_text = (wxChar *)NULL; - SetBackgroundColour(* wxWHITE); - - m_font = *wxNORMAL_FONT; - - wxClientDC dc(this); - dc.SetFont( m_font ); - m_heightChar = dc.GetCharHeight(); - m_widthChar = dc.GetCharWidth(); + SetBackgroundColour(*wxWHITE); - m_caret.Create( this, m_widthChar, m_heightChar ); + SetFontSize(12); m_xCaret = m_yCaret = m_xChars = m_yChars = 0; m_xMargin = m_yMargin = 5; - m_caret.Move(m_xMargin, m_yMargin); - m_caret.Show(); + + CreateCaret(); } MyCanvas::~MyCanvas() @@ -291,10 +327,62 @@ MyCanvas::~MyCanvas() free(m_text); } -void MyCanvas::OnSize( wxSizeEvent &event ) +void MyCanvas::CreateCaret() +{ + wxCaret *caret = new wxCaret(this, m_widthChar, m_heightChar); + SetCaret(caret); + + caret->Move(m_xMargin, m_yMargin); + caret->Show(); +} + +void MyCanvas::SetFontSize(int fontSize) +{ + m_font = wxFont(fontSize, wxFONTFAMILY_TELETYPE, + wxFONTSTYLE_NORMAL, wxFONTWEIGHT_NORMAL); + + wxClientDC dc(this); + dc.SetFont(m_font); + m_heightChar = dc.GetCharHeight(); + m_widthChar = dc.GetCharWidth(); + + wxCaret *caret = GetCaret(); + if ( caret ) + { + caret->SetSize(m_widthChar, m_heightChar); + + ChangeSize(); + } +} + +void MyCanvas::MoveCaret(int x, int y) +{ + m_xCaret = x; + m_yCaret = y; + + DoMoveCaret(); +} + +void MyCanvas::DoMoveCaret() +{ + wxLogStatus(wxT("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) +{ + ChangeSize(); + + event.Skip(); +} + +void MyCanvas::ChangeSize() { - m_xChars = (event.GetSize().x - 2*m_xMargin) / m_widthChar; - m_yChars = (event.GetSize().y - 2*m_yMargin) / m_heightChar; + wxSize size = GetClientSize(); + m_xChars = (size.x - 2*m_xMargin) / m_widthChar; + m_yChars = (size.y - 2*m_yMargin) / m_heightChar; if ( !m_xChars ) m_xChars = 1; if ( !m_yChars ) @@ -303,18 +391,28 @@ void MyCanvas::OnSize( wxSizeEvent &event ) free(m_text); m_text = (wxChar *)calloc(m_xChars * m_yChars, sizeof(wxChar)); - wxString msg; - msg.Printf(_T("Panel size is (%d, %d)"), m_xChars, m_yChars); - - ((wxFrame *)GetParent())->SetStatusText(msg, 1); +#if wxUSE_STATUSBAR + wxFrame *frame = wxDynamicCast(GetParent(), wxFrame); - event.Skip(); + if ( frame && frame->GetStatusBar() ) + { + wxString msg; + msg.Printf(wxT("Panel size is (%d, %d)"), m_xChars, m_yChars); + frame->SetStatusText(msg, 1); + } +#endif // wxUSE_STATUSBAR } +// 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 ); @@ -326,17 +424,24 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) { wxChar ch = CharAt(x, y); if ( !ch ) - ch = _T(' '); + ch = wxT(' '); +#ifdef __WXOSX__ + dc.DrawText(ch, m_xMargin + x * m_widthChar, + m_yMargin + y * m_heightChar ); +#else line += ch; +#endif } +#ifndef __WXOSX__ dc.DrawText( line, m_xMargin, m_yMargin + y * m_heightChar ); +#endif } } void MyCanvas::OnChar( wxKeyEvent &event ) { - switch ( event.KeyCode() ) + switch ( event.GetKeyCode() ) { case WXK_LEFT: PrevChar(); @@ -368,23 +473,26 @@ void MyCanvas::OnChar( wxKeyEvent &event ) break; default: - if ( wxIsprint(event.KeyCode()) ) + if ( !event.AltDown() && wxIsprint(event.GetKeyCode()) ) { - CharAt(m_xCaret, m_yCaret) = (wxChar)event.KeyCode(); + wxChar ch = (wxChar)event.GetKeyCode(); + 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); - - m_caret.Move(m_xMargin + m_xCaret * m_widthChar, - m_yMargin + m_yCaret * m_heightChar); - - Refresh(); + DoMoveCaret(); }