checked in forgottern parts of MSLU changes

[wxWidgets.git] / samples / scroll / scroll.cpp

diff --git a/samples/scroll/scroll.cpp b/samples/scroll/scroll.cpp
index 0d20a0aed6963f9c6b4ef2bf6d9d298e07808266..6f27a04edeb6dde9bb7a61cf1b474f794e7fc1d5 100644 (file)
--- a/samples/scroll/scroll.cpp
+++ b/samples/scroll/scroll.cpp
@@ -34,7 +34,7 @@ class MyApp;
 class MyCanvas: public wxScrolledWindow
 {
 public:
 class MyCanvas: public wxScrolledWindow
 {
 public:

-    MyCanvas() {};
+    MyCanvas() {}

     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
     ~MyCanvas();
     void OnPaint( wxPaintEvent &event );
     MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
     ~MyCanvas();
     void OnPaint( wxPaintEvent &event );


@@ -43,6 +43,7 @@ public:
     void OnDeleteButton( wxCommandEvent &event );
     void OnMoveButton( wxCommandEvent &event );
     void OnScrollWin( wxCommandEvent &event );
     void OnDeleteButton( wxCommandEvent &event );
     void OnMoveButton( wxCommandEvent &event );
     void OnScrollWin( wxCommandEvent &event );

+    void OnMouseDown( wxMouseEvent &event );

 
     wxButton *m_button;
 
 
     wxButton *m_button;
 


@@ -50,7 +51,54 @@ public:
     DECLARE_EVENT_TABLE()
 };
 
     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;
+
+        InitScrollbars();
+    }
+
+protected:
+    // set the scrollbar params
+    void InitScrollbars();
+
+    // 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
+class MyScrolledWindowDumb : public MyScrolledWindowBase
+{
+public:
+    MyScrolledWindowDumb(wxWindow *parent) : MyScrolledWindowBase(parent) { }
+
+    virtual void OnDraw(wxDC& dc);
+};
+
+// this class does "smart" redrawing - only redraws the lines which must be
+// redrawn
+class MyScrolledWindowSmart : public MyScrolledWindowBase
+{
+public:
+    MyScrolledWindowSmart(wxWindow *parent) : MyScrolledWindowBase(parent) { }
+
+    virtual void OnDraw(wxDC& dc);
+};
+
+// ----------------------------------------------------------------------------

 // MyFrame
 // MyFrame

+// ----------------------------------------------------------------------------

 
 class MyFrame: public wxFrame
 {
 
 class MyFrame: public wxFrame
 {


@@ -59,6 +107,8 @@ public:
 
     void OnAbout( wxCommandEvent &event );
     void OnQuit( wxCommandEvent &event );
 
     void OnAbout( wxCommandEvent &event );
     void OnQuit( wxCommandEvent &event );

+    void OnDeleteAll( wxCommandEvent &event );
+    void OnInsertNew( wxCommandEvent &event );

 
     MyCanvas         *m_canvas;
     wxTextCtrl       *m_log;
 
     MyCanvas         *m_canvas;
     wxTextCtrl       *m_log;


@@ -95,6 +145,7 @@ IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
 
 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
   EVT_PAINT(                  MyCanvas::OnPaint)
 
 BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
   EVT_PAINT(                  MyCanvas::OnPaint)

+  EVT_MOUSE_EVENTS(                  MyCanvas::OnMouseDown)

   EVT_BUTTON( ID_QUERYPOS,    MyCanvas::OnQueryPosition)
   EVT_BUTTON( ID_ADDBUTTON,   MyCanvas::OnAddButton)
   EVT_BUTTON( ID_DELBUTTON,   MyCanvas::OnDeleteButton)
   EVT_BUTTON( ID_QUERYPOS,    MyCanvas::OnQueryPosition)
   EVT_BUTTON( ID_ADDBUTTON,   MyCanvas::OnAddButton)
   EVT_BUTTON( ID_DELBUTTON,   MyCanvas::OnDeleteButton)


@@ -111,6 +162,8 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
     (void) new wxButton( this, ID_MOVEBUTTON, "move button", wxPoint(150,10) );
     (void) new wxButton( this, ID_SCROLLWIN, "scroll win", wxPoint(250,10) );
 
     (void) new wxButton( this, ID_MOVEBUTTON, "move button", wxPoint(150,10) );
     (void) new wxButton( this, ID_SCROLLWIN, "scroll win", wxPoint(250,10) );
 

+#if 0
+

     wxString choices[] =
     {
         "This",
     wxString choices[] =
     {
         "This",


@@ -119,22 +172,22 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
         "wonderful",
         "examples."
     };
         "wonderful",
         "examples."
     };

-  
+

     m_button = new wxButton( this, ID_QUERYPOS, "Query position", wxPoint(10,110) );
     m_button = new wxButton( this, ID_QUERYPOS, "Query position", wxPoint(10,110) );

-  
-    (void) new wxTextCtrl( this, -1, "wxTextCtrl", wxPoint(10,150) );
-  
+
+    (void) new wxTextCtrl( this, -1, "wxTextCtrl", wxPoint(10,150), wxSize(80,-1) );
+

     (void) new wxRadioButton( this, -1, "Disable", wxPoint(10,190) );
     (void) new wxRadioButton( this, -1, "Disable", wxPoint(10,190) );

-  
+

     (void) new wxComboBox( this, -1, "This", wxPoint(10,230), wxDefaultSize, 5, choices );
     (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(
     (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);
 
     m_listCtrl->InsertColumn(0, "First", wxLIST_FORMAT_LEFT, 90);
     m_listCtrl->InsertColumn(1, "Last", wxLIST_FORMAT_LEFT, 90);


@@ -149,24 +202,31 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
 
     (void) new wxListBox( this, -1, wxPoint(260,280), wxSize(120,120), 5, choices, wxLB_ALWAYS_SB );
 
 
     (void) new wxListBox( this, -1, wxPoint(260,280), wxSize(120,120), 5, choices, wxLB_ALWAYS_SB );
 

-    wxWindow *test = new wxWindow( 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) );
     wxButton *test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );

-  
-    test = new wxWindow( this, -1, wxPoint(160, 530), wxSize(130,120), wxSUNKEN_BORDER | wxTAB_TRAVERSAL );
-    test->SetBackgroundColour( "WHEAT" );
+
+    test = new wxPanel( this, -1, wxPoint(160, 530), wxSize(130,120), wxSUNKEN_BORDER | wxTAB_TRAVERSAL );
+    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->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
     test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );
     test2->SetCursor( wxCursor( wxCURSOR_PENCIL ) );

-  
-    test = new wxWindow( this, -1, wxPoint(310, 530), wxSize(130,120), wxRAISED_BORDER | wxTAB_TRAVERSAL );
-    test->SetBackgroundColour( "WHEAT" );
+
+    test = new wxPanel( this, -1, wxPoint(310, 530), wxSize(130,120), wxRAISED_BORDER | wxTAB_TRAVERSAL );
+    test->SetBackgroundColour( wxT("WHEAT") );

     test->SetCursor( wxCursor( wxCURSOR_PENCIL ) );
     test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );
     test2->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
 
     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 ) );
 }
 
     SetCursor( wxCursor( wxCURSOR_IBEAM ) );
 }
 


@@ -174,67 +234,89 @@ MyCanvas::~MyCanvas()
 {
 }
 
 {
 }
 

+void MyCanvas::OnMouseDown( wxMouseEvent &event )
+{
+    if (event.LeftDown())
+    {
+        wxPoint pt( event.GetPosition() );
+        int x,y;
+        CalcUnscrolledPosition( pt.x, pt.y, &x, &y );
+        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()") );
+    }
+}
+
+void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
+{
+    wxPaintDC dc( this );
+    PrepareDC( dc );
+
+    dc.DrawText( "Press mouse button to test calculations!", 160, 50 );
+
+    dc.DrawText( "Some text", 140, 140 );
+
+    dc.DrawRectangle( 100, 160, 200, 200 );
+}
+

 void MyCanvas::OnQueryPosition( wxCommandEvent &WXUNUSED(event) )
 {
     wxPoint pt( m_button->GetPosition() );
 void MyCanvas::OnQueryPosition( wxCommandEvent &WXUNUSED(event) )
 {
     wxPoint pt( m_button->GetPosition() );

-    wxLogMessage( """wxButton"" position %d %d", pt.x, pt.y );
-    if ((pt.x == 10) && (pt.y == 110))
-        wxLogMessage( "-> Correct." );
-    else
-        wxLogMessage( "-> Incorrect." );
+    wxLogMessage( wxT("Position of \"Query position\" is %d %d"), pt.x, pt.y );
+    pt = ClientToScreen( pt );
+    wxLogMessage( wxT("Position of \"Query position\" on screen is %d %d"), pt.x, pt.y );

 }
 
 void MyCanvas::OnAddButton( wxCommandEvent &WXUNUSED(event) )
 {
 }
 
 void MyCanvas::OnAddButton( wxCommandEvent &WXUNUSED(event) )
 {

-    wxLogMessage( "Inserting button at position 10,70..." );
-    (void) 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, "new button", wxPoint(10,70), wxSize(80,25) );
+    wxPoint pt( button->GetPosition() );
+    wxLogMessage( wxT("-> Position after inserting %d %d"), pt.x, pt.y );

 }
 
 void MyCanvas::OnDeleteButton( wxCommandEvent &event )
 {
 }
 
 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
     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 )
 {
 }
 
 void MyCanvas::OnMoveButton( wxCommandEvent &event )
 {

-    wxLogMessage( "Moving button 10 pixels downward.." );
+    wxLogMessage( wxT("Moving button 10 pixels downward..") );

     wxWindow *win = FindWindow( event.GetId() );
     wxWindow *win = FindWindow( event.GetId() );

-    win->Move( -1, win->GetPosition().y + 10 );
+    wxPoint pt( win->GetPosition() );
+    wxLogMessage( wxT("-> Position before move is %d %d"), pt.x, pt.y );
+    win->Move( -1, pt.y + 10 );
+    pt = win->GetPosition();
+    wxLogMessage( wxT("-> Position after move is %d %d"), pt.x, pt.y );

 }
 
 void MyCanvas::OnScrollWin( wxCommandEvent &WXUNUSED(event) )
 {
 }
 
 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;
     int x,y;

-    ViewStart( &x, &y );
+    GetViewStart( &x, &y );

     Scroll( -1, y+2 );
 }
 
     Scroll( -1, y+2 );
 }
 

-void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
-{
-    wxPaintDC dc( this );
-    PrepareDC( dc );
-
-    dc.DrawText( "Some text", 140, 140 );
-  
-    dc.DrawRectangle( 10, 70, 80, 25 );
-    
-    dc.DrawRectangle( 100, 160, 200, 200 );
-}
-

 // MyFrame
 
 const int ID_QUIT  = 108;
 const int ID_ABOUT = 109;
 // MyFrame
 
 const int ID_QUIT  = 108;
 const int ID_ABOUT = 109;

+const int ID_DELETE_ALL = 110;
+const int ID_INSERT_NEW = 111;

 
 IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
 
 BEGIN_EVENT_TABLE(MyFrame,wxFrame)
 
 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()
   EVT_MENU    (ID_ABOUT, MyFrame::OnAbout)
   EVT_MENU    (ID_QUIT,  MyFrame::OnQuit)
 END_EVENT_TABLE()


@@ -244,6 +326,8 @@ MyFrame::MyFrame()
                   wxPoint(20,20), wxSize(470,500) )
 {
     wxMenu *file_menu = new wxMenu();
                   wxPoint(20,20), wxSize(470,500) )
 {
     wxMenu *file_menu = new wxMenu();

+    file_menu->Append( ID_DELETE_ALL, "Delete all");
+    file_menu->Append( ID_INSERT_NEW, "Insert new");

     file_menu->Append( ID_ABOUT, "&About..");
     file_menu->Append( ID_QUIT, "E&xit\tAlt-X");
 
     file_menu->Append( ID_ABOUT, "&About..");
     file_menu->Append( ID_QUIT, "E&xit\tAlt-X");
 


@@ -258,20 +342,30 @@ MyFrame::MyFrame()
 
     m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(100,100) );
     m_canvas->SetScrollbars( 10, 10, 50, 100 );
 
     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 );
     wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );

-    
+

     topsizer->Add( m_canvas, 1, wxEXPAND );
     topsizer->Add( m_canvas, 1, wxEXPAND );

-    topsizer->Add( m_log, 0, 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 );
 }
 
 
     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, "Hello", wxPoint(100,100) );
+}
+

 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 {
   Close( TRUE );
 void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
 {
   Close( TRUE );


@@ -296,3 +390,62 @@ bool MyApp::OnInit()
   return TRUE;
 }
 
   return TRUE;
 }
 

+// ----------------------------------------------------------------------------
+// MyScrolledWindowXXX
+// ----------------------------------------------------------------------------
+
+void MyScrolledWindowBase::InitScrollbars()
+{
+    wxClientDC dc(this);
+    dc.GetTextExtent(_T("Line 17"), NULL, &m_hLine);
+
+    // no horz scrolling
+    SetScrollbars(0, m_hLine, 0, m_nLines + 1, 0, 0, TRUE /* no refresh */);
+}
+
+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;
+    }
+}