// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(__APPLE__)
#pragma implementation "erase.cpp"
#pragma interface "erase.cpp"
#endif
{
public:
MyCanvas( MyFrame *parent );
-
+
void OnPaint( wxPaintEvent &event );
+ void OnChar( wxKeyEvent &event );
void OnEraseBackground( wxEraseEvent &event );
+ wxBitmap m_bitmap;
+ wxString m_text;
+
private:
DECLARE_EVENT_TABLE()
};
enum
{
// menu items
- Minimal_Quit = 1,
- Minimal_About
+ ID_MENU_QUIT = 1,
};
bool MyApp::OnInit()
{
- MyFrame *frame = new MyFrame("Minimal wxWindows App",
+ MyFrame *frame = new MyFrame(_T("Erase sample"),
wxPoint(50, 50), wxSize(450, 340));
frame->Show(TRUE);
-
+
return TRUE;
}
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
- EVT_MENU(Minimal_Quit, MyFrame::OnQuit)
- EVT_MENU(Minimal_About, MyFrame::OnAbout)
+ EVT_MENU(ID_MENU_QUIT, MyFrame::OnQuit)
+ EVT_MENU(wxID_ABOUT, MyFrame::OnAbout)
END_EVENT_TABLE()
// frame constructor
MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
: wxFrame((wxFrame *)NULL, -1, title, pos, size)
{
-#ifdef __WXMAC__
- wxApp::s_macAboutMenuItemId = Minimal_About;
-#endif
-
SetIcon(wxICON(mondrian));
- wxMenu *menuFile = new wxMenu("", wxMENU_TEAROFF);
+ wxMenu *menuFile = new wxMenu(_T(""), wxMENU_TEAROFF);
wxMenu *helpMenu = new wxMenu;
- helpMenu->Append(Minimal_About, "&About...\tCtrl-A", "Show about dialog");
+ helpMenu->Append(wxID_ABOUT, _T("&About...\tCtrl-A"), _T("Show about dialog"));
- menuFile->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program");
+ menuFile->Append(ID_MENU_QUIT, _T("E&xit\tAlt-X"), _T("Quit this program"));
wxMenuBar *menuBar = new wxMenuBar();
- menuBar->Append(menuFile, "&File");
- menuBar->Append(helpMenu, "&Help");
+ menuBar->Append(menuFile, _T("&File"));
+ menuBar->Append(helpMenu, _T("&Help"));
SetMenuBar(menuBar);
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(2);
- SetStatusText("Welcome to wxWindows!");
+ SetStatusText(_T("Welcome to wxWindows erase sample!"));
#endif // wxUSE_STATUSBAR
(void)new MyCanvas( this );
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
- wxString msg;
- msg.Printf( _T("This is the about dialog of the Erase sample.\n")
- _T("Welcome to %s"), wxVERSION_STRING);
-
- wxMessageBox(msg, "About Erase", wxOK | wxICON_INFORMATION, this);
+ wxMessageBox(_T("This sample shows how you can draw custom background."),
+ _T("About Erase Sample"), wxOK | wxICON_INFORMATION, this);
}
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_PAINT( MyCanvas::OnPaint)
+ EVT_CHAR( MyCanvas::OnChar)
EVT_ERASE_BACKGROUND( MyCanvas::OnEraseBackground)
END_EVENT_TABLE()
MyCanvas::MyCanvas( MyFrame *parent )
- : wxScrolledWindow( parent, -1, wxDefaultPosition, wxDefaultSize,
- wxScrolledWindowStyle|wxNO_FULL_REPAINT_ON_RESIZE|wxSUNKEN_BORDER )
+ : wxScrolledWindow( parent, -1, wxDefaultPosition, wxDefaultSize,
+ wxScrolledWindowStyle |
+ wxNO_FULL_REPAINT_ON_RESIZE|
+ wxSUNKEN_BORDER )
{
SetScrollbars( 10, 10, 40, 100, 0, 0 );
+
+ m_bitmap = wxBitmap( wxICON(mondrian) );
+
+ new wxStaticBitmap( this, -1, m_bitmap, wxPoint(80,20) );
+}
+
+void MyCanvas::OnChar( wxKeyEvent &event )
+{
+#if wxUSE_UNICODE
+ if (event.m_uniChar)
+ {
+ m_text += event.m_uniChar;
+ Refresh();
+ return;
+ }
+#endif
+
+ // some test cases
+ switch (event.m_keyCode)
+ {
+ case WXK_UP: m_text += wxT( "<UP>" ); break;
+ case WXK_LEFT: m_text += wxT( "<LEFT>" ); break;
+ case WXK_RIGHT: m_text += wxT( "<RIGHT>" ); break;
+ case WXK_DOWN: m_text += wxT( "<DOWN>" ); break;
+ case WXK_RETURN: m_text += wxT( "<ENTER>" ); break;
+ default: m_text += event.m_keyCode; break;
+ }
+
}
void MyCanvas::OnPaint( wxPaintEvent &event )
{
wxPaintDC dc(this);
PrepareDC( dc );
-
+
+ dc.SetBrush( *wxBLACK_BRUSH );
+ dc.DrawRectangle( 0,0,200,50 );
+
+ dc.DrawBitmap( m_bitmap, 10, 20, TRUE );
+
+ dc.SetTextForeground(*wxBLUE);
+ dc.DrawText(_T("This text is drawn from OnPaint"), 65, 65);
+
+ wxString tmp;
+ tmp.Printf( _T("Hit any key to display more text: %s"), m_text.c_str() );
+ int w,h;
+ dc.GetTextExtent( tmp, &w, &h );
+ dc.SetBrush( *wxWHITE_BRUSH );
+ dc.DrawRectangle( 65, 85, w, h );
+ dc.DrawText( tmp, 65, 85 );
+
+#if 0
wxRegionIterator upd( GetUpdateRegion() );
while (upd)
{
- wxLogDebug( "Paint: %d %d %d %d", upd.GetX(), upd.GetY(), upd.GetWidth(), upd.GetHeight() );
+ wxLogDebug( _T("Paint: %d %d %d %d"), upd.GetX(), upd.GetY(), upd.GetWidth(), upd.GetHeight() );
upd ++;
}
-
+#endif
+
+#if 0
+ wxSize size = GetSize();
+ wxSize client_size = GetClientSize();
+ wxLogDebug( _T("size %d %d client_size %d %d"), size.x, size.y, client_size.x, client_size.y );
+#endif
+
+#if 0
+ int i;
dc.SetPen( *wxWHITE_PEN );
- for (int i = 0; i < 20; i += 2)
+ for (i = 0; i < 20; i += 2)
dc.DrawLine( i,i, i+100,i );
-
+
+ dc.SetPen( *wxWHITE_PEN );
+ for (i = 200; i < 220; i += 2)
+ dc.DrawLine( i-200,i, i-100,i );
+
wxRegion region( 110, 110, 80, 80 );
wxRegion hole( 130, 130, 40, 1 );
region.Intersect( hole );
dc.SetClippingRegion( region );
-
+
dc.SetBrush( *wxRED_BRUSH );
dc.DrawRectangle( 100, 100, 200, 200 );
-
+
dc.DestroyClippingRegion();
dc.SetPen( *wxTRANSPARENT_PEN );
-
+
wxRegion strip( 110, 200, 30, 1 );
wxRegionIterator it( strip );
while (it)
dc.DrawRectangle( it.GetX(), it.GetY(), it.GetWidth(), it.GetHeight() );
it ++;
}
+#endif // 0
}
-void MyCanvas::OnEraseBackground( wxEraseEvent &event )
+void MyCanvas::OnEraseBackground( wxEraseEvent& event )
{
- event.Skip( TRUE );
+ wxDC& dc = *event.GetDC();
+ dc.SetPen(*wxGREEN_PEN);
+
+ // this line is needed, otherwise the junk is left on win the background
+ dc.Clear();
+
+ wxSize size = GetClientSize();
+ for ( int x = 0; x < size.x; x+= 10 )
+ {
+ dc.DrawLine(x, 0, x, size.y);
+ }
+
+ for ( int y = 0; y < size.y; y+= 10 )
+ {
+ dc.DrawLine(0, y, size.x, y);
+ }
+
+ dc.SetTextForeground(*wxRED);
+ dc.DrawText(_T("This text is drawn from OnEraseBackground"), 60, 60);
}
projects / wxWidgets.git / blobdiff