// 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 <wx/wxprec.h>
+#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 <standard< wxWindows headers
+// need because it includes almost all <standard< wxWidgets headers
#ifndef WX_PRECOMP
- #include <wx/wx.h>
-
- #include <wx/log.h>
+ #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
// ----------------------------------------------------------------------------
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
{
MyCanvas( wxWindow *parent );
~MyCanvas();
- char& CharAt(int x, int y) { return *(m_text + x + m_xChars * y); }
+ 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 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)
int m_xChars, m_yChars;
// the text
- char *m_text;
+ wxChar *m_text;
DECLARE_DYNAMIC_CLASS(MyCanvas)
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
// ----------------------------------------------------------------------------
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
// `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;
}
// ----------------------------------------------------------------------------
// 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(Minimal_Quit, "E&xit\tAlt-X", "Quit this program");
+ menuFile->Append(Caret_About, wxT("&About\tCtrl-A"), wxT("Show about dialog"));
+ menuFile->AppendSeparator();
+ 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
}
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
END_EVENT_TABLE()
MyCanvas::MyCanvas( wxWindow *parent )
- : wxScrolledWindow( parent, -1,
+ : wxScrolledWindow( parent, wxID_ANY,
wxDefaultPosition, wxDefaultSize,
wxSUNKEN_BORDER )
{
- SetBackgroundColour(* wxWHITE);
-
- m_font = *wxNORMAL_FONT;
+ m_text = (wxChar *)NULL;
- 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();
- m_text = (char *)NULL;
+ CreateCaret();
}
MyCanvas::~MyCanvas()
free(m_text);
}
-void MyCanvas::OnSize( wxSizeEvent &event )
+void MyCanvas::CreateCaret()
{
- m_xChars = (event.GetSize().x - 2*m_xMargin) / m_widthChar;
- m_yChars = (event.GetSize().y - 2*m_yMargin) / m_heightChar;
+ 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()
+{
+ 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 )
m_yChars = 1;
free(m_text);
- m_text = (char *)calloc(m_xChars * m_yChars, sizeof(char));
-
- wxString msg;
- msg.Printf("Panel size is (%d, %d)", m_xChars, m_yChars);
+ m_text = (wxChar *)calloc(m_xChars * m_yChars, sizeof(wxChar));
- ((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 );
for ( int x = 0; x < m_xChars; x++ )
{
- char ch = CharAt(x, y);
+ wxChar ch = CharAt(x, y);
if ( !ch )
- ch = ' ';
+ 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();
break;
default:
- if ( isprint(event.KeyCode()) )
+ if ( !event.AltDown() && wxIsprint(event.GetKeyCode()) )
{
- CharAt(m_xCaret, m_yCaret) = (char)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("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();
}
projects / wxWidgets.git / blobdiff