* Author: Robert Roebling
*
* Copyright: (C) 1998, Robert Roebling
+ * 2002, Ron Lee
*
*/
class MyCanvas: public wxScrolledWindow
{
public:
- MyCanvas() {};
+ MyCanvas() {}
MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
~MyCanvas();
void OnPaint( wxPaintEvent &event );
DECLARE_EVENT_TABLE()
};
+
+// ----------------------------------------------------------------------------
+// Autoscrolling example.
+// ----------------------------------------------------------------------------
+
+// this class uses the 'virtual' size attribute along with an internal
+// sizer to automatically set up scrollbars as needed
+
+class MyAutoScrollWindow : public wxScrolledWindow
+{
+private:
+
+ wxButton *m_button;
+
+public:
+
+ MyAutoScrollWindow( wxWindow *parent );
+
+ void OnResizeClick( wxCommandEvent &WXUNUSED( event ) );
+
+ DECLARE_EVENT_TABLE()
+};
+
+
+// ----------------------------------------------------------------------------
+// MyScrolledWindow classes: examples of wxScrolledWindow usage
+// ----------------------------------------------------------------------------
+
+// base class for both of them
+class MyScrolledWindowBase : public wxScrolledWindow
+{
+public:
+ MyScrolledWindowBase(wxWindow *parent)
+ : wxScrolledWindow(parent)
+ , m_nLines( 100 )
+ {
+ wxClientDC dc(this);
+ dc.GetTextExtent(_T("Line 17"), NULL, &m_hLine);
+ }
+
+protected:
+ // the height of one line on screen
+ wxCoord m_hLine;
+
+ // the number of lines we draw
+ size_t m_nLines;
+};
+
+// this class does "stupid" redrawing - it redraws everything each time
+// and sets the scrollbar extent directly.
+
+class MyScrolledWindowDumb : public MyScrolledWindowBase
+{
+public:
+ MyScrolledWindowDumb(wxWindow *parent) : MyScrolledWindowBase(parent)
+ {
+ // no horz scrolling
+ SetScrollbars(0, m_hLine, 0, m_nLines + 1, 0, 0, TRUE /* no refresh */);
+ }
+
+ virtual void OnDraw(wxDC& dc);
+};
+
+// this class does "smart" redrawing - only redraws the lines which must be
+// redrawn and sets the scroll rate and virtual size to affect the
+// scrollbars.
+//
+// Note that this class should produce identical results to the one above.
+
+class MyScrolledWindowSmart : public MyScrolledWindowBase
+{
+public:
+ MyScrolledWindowSmart(wxWindow *parent) : MyScrolledWindowBase(parent)
+ {
+ // no horz scrolling
+ SetScrollRate( 0, m_hLine );
+ SetVirtualSize( -1, ( m_nLines + 1 ) * m_hLine );
+ }
+
+ virtual void OnDraw(wxDC& dc);
+};
+
+
+// ----------------------------------------------------------------------------
// MyFrame
+// ----------------------------------------------------------------------------
class MyFrame: public wxFrame
{
void OnAbout( wxCommandEvent &event );
void OnQuit( wxCommandEvent &event );
+ void OnDeleteAll( wxCommandEvent &event );
+ void OnInsertNew( wxCommandEvent &event );
MyCanvas *m_canvas;
wxTextCtrl *m_log;
// ids
-#define ID_ADDBUTTON 1
-#define ID_DELBUTTON 2
-#define ID_MOVEBUTTON 3
-#define ID_SCROLLWIN 4
-#define ID_QUERYPOS 5
+const long ID_ADDBUTTON = wxNewId();
+const long ID_DELBUTTON = wxNewId();
+const long ID_MOVEBUTTON = wxNewId();
+const long ID_SCROLLWIN = wxNewId();
+const long ID_QUERYPOS = wxNewId();
-#define ID_NEWBUTTON 10
+const long ID_NEWBUTTON = wxNewId();
// MyCanvas
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_PAINT( MyCanvas::OnPaint)
- EVT_MOUSE_EVENTS( MyCanvas::OnMouseDown)
+ EVT_MOUSE_EVENTS( MyCanvas::OnMouseDown)
EVT_BUTTON( ID_QUERYPOS, MyCanvas::OnQueryPosition)
EVT_BUTTON( ID_ADDBUTTON, MyCanvas::OnAddButton)
EVT_BUTTON( ID_DELBUTTON, MyCanvas::OnDeleteButton)
MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size )
- : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER | wxTAB_TRAVERSAL, "test canvas" )
+ : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER | wxTAB_TRAVERSAL, _T("test canvas") )
{
- (void) new wxButton( this, ID_ADDBUTTON, "add button", wxPoint(10,10) );
- (void) new wxButton( this, ID_DELBUTTON, "del button", wxPoint(10,40) );
- (void) new wxButton( this, ID_MOVEBUTTON, "move button", wxPoint(150,10) );
- (void) new wxButton( this, ID_SCROLLWIN, "scroll win", wxPoint(250,10) );
+ SetScrollRate( 10, 10 );
+ SetVirtualSize( 500, 1000 );
+
+ (void) new wxButton( this, ID_ADDBUTTON, _T("add button"), wxPoint(10,10) );
+ (void) new wxButton( this, ID_DELBUTTON, _T("del button"), wxPoint(10,40) );
+ (void) new wxButton( this, ID_MOVEBUTTON, _T("move button"), wxPoint(150,10) );
+ (void) new wxButton( this, ID_SCROLLWIN, _T("scroll win"), wxPoint(250,10) );
+
+#if 0
wxString choices[] =
{
"wonderful",
"examples."
};
-
+
m_button = new wxButton( this, ID_QUERYPOS, "Query position", wxPoint(10,110) );
-
+
(void) new wxTextCtrl( this, -1, "wxTextCtrl", wxPoint(10,150), wxSize(80,-1) );
-
+
(void) new wxRadioButton( this, -1, "Disable", wxPoint(10,190) );
-
+
(void) new wxComboBox( this, -1, "This", wxPoint(10,230), wxDefaultSize, 5, choices );
-
+
(void) new wxRadioBox( this, -1, "This", wxPoint(10,310), wxDefaultSize, 5, choices, 2, wxRA_SPECIFY_COLS );
(void) new wxRadioBox( this, -1, "This", wxPoint(10,440), wxDefaultSize, 5, choices, 2, wxRA_SPECIFY_ROWS );
wxListCtrl *m_listCtrl = new wxListCtrl(
- this, -1, wxPoint(200, 110), wxSize(180, 120),
- wxLC_REPORT | wxSIMPLE_BORDER | wxLC_SINGLE_SEL );
+ this, -1, wxPoint(200, 110), wxSize(180, 120),
+ wxLC_REPORT | wxSIMPLE_BORDER | wxLC_SINGLE_SEL );
m_listCtrl->InsertColumn(0, "First", wxLIST_FORMAT_LEFT, 90);
m_listCtrl->InsertColumn(1, "Last", wxLIST_FORMAT_LEFT, 90);
(void) new wxListBox( this, -1, wxPoint(260,280), wxSize(120,120), 5, choices, wxLB_ALWAYS_SB );
- wxPanel *test = new wxPanel( this, -1, wxPoint(10, 530), wxSize(130,120), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
- test->SetBackgroundColour( "WHEAT" );
+#endif
+
+ wxPanel *test = new wxPanel( this, -1, wxPoint(10, 110), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
+ test->SetBackgroundColour( wxT("WHEAT") );
+
+#if 0
+
wxButton *test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );
-
+
test = new wxPanel( this, -1, wxPoint(160, 530), wxSize(130,120), wxSUNKEN_BORDER | wxTAB_TRAVERSAL );
- test->SetBackgroundColour( "WHEAT" );
+ test->SetBackgroundColour( wxT("WHEAT") );
test->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );
test2->SetCursor( wxCursor( wxCURSOR_PENCIL ) );
-
+
test = new wxPanel( this, -1, wxPoint(310, 530), wxSize(130,120), wxRAISED_BORDER | wxTAB_TRAVERSAL );
- test->SetBackgroundColour( "WHEAT" );
+ test->SetBackgroundColour( wxT("WHEAT") );
test->SetCursor( wxCursor( wxCURSOR_PENCIL ) );
test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );
test2->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
- SetBackgroundColour( "WHEAT" );
-
+#endif
+
+ SetBackgroundColour( wxT("BLUE") );
+
SetCursor( wxCursor( wxCURSOR_IBEAM ) );
}
wxPoint pt( event.GetPosition() );
int x,y;
CalcUnscrolledPosition( pt.x, pt.y, &x, &y );
- wxLogMessage( "Mouse down event at: %d %d, scrolled: %d %d", pt.x, pt.y, x, y );
- }
-
- if (event.LeftIsDown() &&
- event.LeftDown())
- {
- wxLogMessage( "Error: both LeftDown() and LeftIsDown() are TRUE!" );
+ wxLogMessage( wxT("Mouse down event at: %d %d, scrolled: %d %d"), pt.x, pt.y, x, y );
+
+ if ( !event.LeftIsDown() )
+ wxLogMessage( wxT("Error: LeftIsDown() should be TRUE if for LeftDown()") );
}
}
wxPaintDC dc( this );
PrepareDC( dc );
- dc.DrawText( "Press mouse button to test calculations!", 160, 50 );
+ dc.DrawText( _T("Press mouse button to test calculations!"), 160, 50 );
+
+ dc.DrawText( _T("Some text"), 140, 140 );
- dc.DrawText( "Some text", 140, 140 );
-
dc.DrawRectangle( 100, 160, 200, 200 );
}
void MyCanvas::OnQueryPosition( wxCommandEvent &WXUNUSED(event) )
{
wxPoint pt( m_button->GetPosition() );
- wxLogMessage( "Position of ""Query position"" is %d %d", pt.x, pt.y );
+ wxLogMessage( wxT("Position of \"Query position\" is %d %d"), pt.x, pt.y );
pt = ClientToScreen( pt );
- wxLogMessage( "Position of ""Query position"" on screen is %d %d", pt.x, pt.y );
+ wxLogMessage( wxT("Position of \"Query position\" on screen is %d %d"), pt.x, pt.y );
}
void MyCanvas::OnAddButton( wxCommandEvent &WXUNUSED(event) )
{
- wxLogMessage( "Inserting button at position 10,70..." );
- wxButton *button = new wxButton( this, ID_NEWBUTTON, "new button", wxPoint(10,70), wxSize(80,25) );
+ wxLogMessage( wxT("Inserting button at position 10,70...") );
+ wxButton *button = new wxButton( this, ID_NEWBUTTON, wxT("new button"), wxPoint(10,70), wxSize(80,25) );
wxPoint pt( button->GetPosition() );
- wxLogMessage( "-> Position after inserting %d %d", pt.x, pt.y );
+ wxLogMessage( wxT("-> Position after inserting %d %d"), pt.x, pt.y );
}
void MyCanvas::OnDeleteButton( wxCommandEvent &event )
{
- wxLogMessage( "Deleting button inserted with ""Add button""..." );
+ wxLogMessage( wxT("Deleting button inserted with \"Add button\"...") );
wxWindow *win = FindWindow( ID_NEWBUTTON );
if (win)
win->Destroy();
else
- wxLogMessage( "-> No window with id = ID_NEWBUTTON found." );
+ wxLogMessage( wxT("-> No window with id = ID_NEWBUTTON found.") );
}
void MyCanvas::OnMoveButton( wxCommandEvent &event )
{
- wxLogMessage( "Moving button 10 pixels downward.." );
+ wxLogMessage( wxT("Moving button 10 pixels downward..") );
wxWindow *win = FindWindow( event.GetId() );
wxPoint pt( win->GetPosition() );
- wxLogMessage( "-> Position before move is %d %d", pt.x, pt.y );
+ wxLogMessage( wxT("-> Position before move is %d %d"), pt.x, pt.y );
win->Move( -1, pt.y + 10 );
pt = win->GetPosition();
- wxLogMessage( "-> Position after move is %d %d", pt.x, pt.y );
+ wxLogMessage( wxT("-> Position after move is %d %d"), pt.x, pt.y );
}
void MyCanvas::OnScrollWin( wxCommandEvent &WXUNUSED(event) )
{
- wxLogMessage( "Scrolling 2 units up.\nThe white square and the controls should move equally!" );
+ wxLogMessage( wxT("Scrolling 2 units up.\nThe white square and the controls should move equally!") );
int x,y;
- ViewStart( &x, &y );
+ GetViewStart( &x, &y );
Scroll( -1, y+2 );
}
+// MyAutoScrollWindow
+
+const long ID_RESIZEBUTTON = wxNewId();
+const wxSize SMALL_BUTTON( 100, 50 );
+const wxSize LARGE_BUTTON( 300, 100 );
+
+BEGIN_EVENT_TABLE( MyAutoScrollWindow, wxScrolledWindow)
+ EVT_BUTTON( ID_RESIZEBUTTON, MyAutoScrollWindow::OnResizeClick)
+END_EVENT_TABLE()
+
+MyAutoScrollWindow::MyAutoScrollWindow( wxWindow *parent )
+ : wxScrolledWindow( parent )
+{
+ SetBackgroundColour( wxT("GREEN") );
+
+ // Set the rate we'd like for scrolling.
+
+ SetScrollRate( 5, 5 );
+
+ // Populate a sizer with a 'resizing' button and some
+ // other static decoration
+
+ wxFlexGridSizer *innersizer = new wxFlexGridSizer( 2, 2 );
+
+ m_button = new wxButton( this,
+ ID_RESIZEBUTTON,
+ _T("Press me"),
+ wxDefaultPosition,
+ SMALL_BUTTON );
+
+ // We need to do this here, because wxADJUST_MINSIZE below
+ // will cause the initial size to be ignored for Best/Min size.
+ // It would be nice to fix the sizers to handle this a little
+ // more cleanly.
+
+ m_button->SetSizeHints( SMALL_BUTTON.GetWidth(), SMALL_BUTTON.GetHeight() );
+
+ innersizer->Add( m_button,
+ 0,
+ wxALIGN_CENTER | wxALL | wxADJUST_MINSIZE,
+ 20 );
+
+ innersizer->Add( new wxStaticText( this, -1, _T("This is just") ),
+ 0,
+ wxALIGN_CENTER );
+
+ innersizer->Add( new wxStaticText( this, -1, _T("some decoration") ),
+ 0,
+ wxALIGN_CENTER );
+
+ innersizer->Add( new wxStaticText( this, -1, _T("for you to scroll...") ),
+ 0,
+ wxALIGN_CENTER );
+
+ // Then use the sizer to set the scrolled region size.
+
+ SetSizer( innersizer );
+}
+
+void MyAutoScrollWindow::OnResizeClick( wxCommandEvent &WXUNUSED( event ) )
+{
+ // Arbitrarily resize the button to change the minimum size of
+ // the (scrolled) sizer.
+
+ if( m_button->GetSize() == SMALL_BUTTON )
+ m_button->SetSizeHints( LARGE_BUTTON.GetWidth(), LARGE_BUTTON.GetHeight() );
+ else
+ m_button->SetSizeHints( SMALL_BUTTON.GetWidth(), SMALL_BUTTON.GetHeight() );
+
+ // Force update layout and scrollbars, since nothing we do here
+ // necessarily generates a size event which would do it for us.
+
+ FitInside();
+}
+
// MyFrame
-const int ID_QUIT = 108;
-const int ID_ABOUT = 109;
+const long ID_QUIT = wxNewId();
+const long ID_ABOUT = wxNewId();
+const long ID_DELETE_ALL = wxNewId();
+const long ID_INSERT_NEW = wxNewId();
IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
BEGIN_EVENT_TABLE(MyFrame,wxFrame)
+ EVT_MENU (ID_DELETE_ALL, MyFrame::OnDeleteAll)
+ EVT_MENU (ID_INSERT_NEW, MyFrame::OnInsertNew)
EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
EVT_MENU (ID_QUIT, MyFrame::OnQuit)
END_EVENT_TABLE()
MyFrame::MyFrame()
- : wxFrame( (wxFrame *)NULL, -1, "wxScrolledWindow sample",
+ : wxFrame( (wxFrame *)NULL, -1, _T("wxScrolledWindow sample"),
wxPoint(20,20), wxSize(470,500) )
{
wxMenu *file_menu = new wxMenu();
- file_menu->Append( ID_ABOUT, "&About..");
- file_menu->Append( ID_QUIT, "E&xit\tAlt-X");
+ file_menu->Append( ID_DELETE_ALL, _T("Delete all"));
+ file_menu->Append( ID_INSERT_NEW, _T("Insert new"));
+ file_menu->Append( ID_ABOUT, _T("&About.."));
+ file_menu->Append( ID_QUIT, _T("E&xit\tAlt-X"));
wxMenuBar *menu_bar = new wxMenuBar();
- menu_bar->Append(file_menu, "&File");
+ menu_bar->Append(file_menu, _T("&File"));
SetMenuBar( menu_bar );
int widths[] = { -1, 100 };
SetStatusWidths( 2, widths );
- m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(100,100) );
- m_canvas->SetScrollbars( 10, 10, 50, 100 );
-
- m_log = new wxTextCtrl( this, -1, "This is the log window.\n", wxPoint(0,0), wxSize(100,100), wxTE_MULTILINE );
- wxLog *old_log = wxLog::SetActiveTarget( new wxLogTextCtrl( m_log ) );
- delete old_log;
-
wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
-
+
+ // Setting an explicit size here is superfluous, it will be overridden
+ // by the sizer in any case.
+ m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(100,100) );
+
+ // This is done with ScrollRate/VirtualSize in MyCanvas ctor now,
+ // both should produce identical results.
+ //m_canvas->SetScrollbars( 10, 10, 50, 100 );
+
topsizer->Add( m_canvas, 1, wxEXPAND );
- topsizer->Add( m_log, 0, wxEXPAND );
+ topsizer->Add( new MyAutoScrollWindow( this ), 1, wxEXPAND );
+
+ wxSizer *sizerBtm = new wxBoxSizer(wxHORIZONTAL);
+ sizerBtm->Add( new MyScrolledWindowDumb(this), 1, wxEXPAND );
+ sizerBtm->Add( new MyScrolledWindowSmart(this), 1, wxEXPAND );
+ topsizer->Add( sizerBtm, 1, wxEXPAND );
- SetAutoLayout( TRUE );
SetSizer( topsizer );
}
+void MyFrame::OnDeleteAll( wxCommandEvent &WXUNUSED(event) )
+{
+ m_canvas->DestroyChildren();
+}
+
+void MyFrame::OnInsertNew( wxCommandEvent &WXUNUSED(event) )
+{
+ (void)new wxButton( m_canvas, -1, _T("Hello"), wxPoint(100,100) );
+}
+
void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
{
Close( TRUE );
void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
{
- (void)wxMessageBox( "wxScroll demo\n"
- "Robert Roebling (c) 1998",
- "About wxScroll Demo", wxICON_INFORMATION | wxOK );
+ (void)wxMessageBox( _T("wxScroll demo\n"
+ "Robert Roebling (c) 1998\n"
+ "Autoscrolling examples\n"
+ "Ron Lee (c) 2002"),
+ _T("About wxScroll Demo"),
+ wxICON_INFORMATION | wxOK );
}
//-----------------------------------------------------------------------------
return TRUE;
}
+// ----------------------------------------------------------------------------
+// MyScrolledWindowXXX
+// ----------------------------------------------------------------------------
+
+void MyScrolledWindowDumb::OnDraw(wxDC& dc)
+{
+ // this is useful to see which lines are redrawn
+ static size_t s_redrawCount = 0;
+ dc.SetTextForeground(s_redrawCount++ % 2 ? *wxRED : *wxBLUE);
+
+ wxCoord y = 0;
+ for ( size_t line = 0; line < m_nLines; line++ )
+ {
+ wxCoord yPhys;
+ CalcScrolledPosition(0, y, NULL, &yPhys);
+
+ dc.DrawText(wxString::Format(_T("Line %u (logical %d, physical %d)"),
+ line, y, yPhys), 0, y);
+ y += m_hLine;
+ }
+}
+
+void MyScrolledWindowSmart::OnDraw(wxDC& dc)
+{
+ // this is useful to see which lines are redrawn
+ static size_t s_redrawCount = 0;
+ dc.SetTextForeground(s_redrawCount++ % 2 ? *wxRED : *wxBLUE);
+
+ // update region is always in device coords, translate to logical ones
+ wxRect rectUpdate = GetUpdateRegion().GetBox();
+ CalcUnscrolledPosition(rectUpdate.x, rectUpdate.y,
+ &rectUpdate.x, &rectUpdate.y);
+
+ size_t lineFrom = rectUpdate.y / m_hLine,
+ lineTo = rectUpdate.GetBottom() / m_hLine;
+
+ if ( lineTo > m_nLines - 1)
+ lineTo = m_nLines - 1;
+
+ wxCoord y = lineFrom*m_hLine;
+ for ( size_t line = lineFrom; line <= lineTo; line++ )
+ {
+ wxCoord yPhys;
+ CalcScrolledPosition(0, y, NULL, &yPhys);
+
+ dc.DrawText(wxString::Format(_T("Line %u (logical %d, physical %d)"),
+ line, y, yPhys), 0, y);
+ y += m_hLine;
+ }
+}
projects / wxWidgets.git / blobdiff