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

/*
 * Program: scrollsub
 *
 * Author: Robert Roebling
 *
 * Copyright: (C) 1999, Robert Roebling
 *
 */

// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
#pragma hdrstop
#endif

#ifndef WX_PRECOMP
#include "wx/wx.h"
#endif

#include "wx/image.h"
#include "wx/listctrl.h"
#include "wx/sizer.h"
#include "wx/log.h"


// derived classes

class MyFrame;
class MyScrolledWindow;
class MyCanvas;
class MyApp;

// MyScrolledWindow

class MyScrolledWindow: public wxScrolledWindow
{
public:
    MyScrolledWindow() {}
    MyScrolledWindow( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
    ~MyScrolledWindow();
    void OnPaint( wxPaintEvent &event );

private:
    MyCanvas    *m_canvas;

    DECLARE_DYNAMIC_CLASS(MyScrolledWindow)
    DECLARE_EVENT_TABLE()
};

// MyTopLabels

class MyTopLabels: public wxWindow
{
public:
    MyTopLabels() {}
    MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );

    void OnPaint( wxPaintEvent &event );

private:
    wxScrolledWindow   *m_owner;

    DECLARE_DYNAMIC_CLASS(MyTopLabels)
    DECLARE_EVENT_TABLE()
};

// MyRightLabels

class MyRightLabels: public wxWindow
{
public:
    MyRightLabels() {}
    MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );

    void OnPaint( wxPaintEvent &event );

private:
    wxScrolledWindow   *m_owner;

    DECLARE_DYNAMIC_CLASS(MyRightLabels)
    DECLARE_EVENT_TABLE()
};

// MyCanvas

class MyCanvas: public wxPanel
{
public:
    MyCanvas() {}
    MyCanvas( wxScrolledWindow *parent, MyTopLabels *top, MyRightLabels *right,
              wxWindowID id, const wxPoint &pos, const wxSize &size );
    ~MyCanvas();
    void OnPaint( wxPaintEvent &event );
    void ScrollWindow( int dx, int dy, const wxRect *rect );

private:
    wxScrolledWindow   *m_owner;
    MyTopLabels        *m_topLabels;
    MyRightLabels      *m_rightLabels;

    DECLARE_DYNAMIC_CLASS(MyCanvas)
    DECLARE_EVENT_TABLE()
};

// MyFrame

class MyFrame: public wxFrame
{
public:
    MyFrame();

    void OnAbout( wxCommandEvent &event );
    void OnQuit( wxCommandEvent &event );
    void OnFullScreen( wxCommandEvent &event );

    wxScrolledWindow   *m_scrolled;
    wxTextCtrl         *m_log;

private:
    DECLARE_DYNAMIC_CLASS(MyFrame)
    DECLARE_EVENT_TABLE()
};

// MyApp

class MyApp: public wxApp
{
public:
    virtual bool OnInit();
};

// main program

IMPLEMENT_APP(MyApp)

// MyScrolledWindow

IMPLEMENT_DYNAMIC_CLASS(MyScrolledWindow, wxScrolledWindow)

BEGIN_EVENT_TABLE(MyScrolledWindow, wxScrolledWindow)
  EVT_PAINT(        MyScrolledWindow::OnPaint)
END_EVENT_TABLE()

MyScrolledWindow::MyScrolledWindow( wxWindow *parent, wxWindowID id,
                    const wxPoint &pos, const wxSize &size )
        : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER, "test canvas" )
{
    MyTopLabels *top = new MyTopLabels( this, -1, wxDefaultPosition, wxSize(-1,25) );
    MyRightLabels *right = new MyRightLabels( this, -1, wxDefaultPosition, wxSize(60,-1) );

    m_canvas = new MyCanvas( this, top, right, -1, wxDefaultPosition, wxDefaultSize );

    SetTargetWindow( m_canvas );

    SetBackgroundColour( wxT("WHEAT") );

    SetCursor( wxCursor( wxCURSOR_HAND ) );

    wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );

    wxBoxSizer *topsizer = new wxBoxSizer( wxHORIZONTAL );
    topsizer->Add( 60,25 );
    topsizer->Add( top, 1, wxEXPAND );

    mainsizer->Add( topsizer, 0, wxEXPAND );

    wxBoxSizer *middlesizer = new wxBoxSizer( wxHORIZONTAL );
    middlesizer->Add( right, 0, wxEXPAND );
    middlesizer->Add( m_canvas, 1, wxEXPAND );

    mainsizer->Add( middlesizer, 1, wxEXPAND );

    SetAutoLayout( TRUE );
    SetSizer( mainsizer );
}

MyScrolledWindow::~MyScrolledWindow()
{
}

void MyScrolledWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
    wxPaintDC dc( this );

/*
    wxSize size( GetClientSize() );

    long w,h;
    dc.GetTextExtent( wxT("Headline"), &w, &h );

    dc.DrawText( wxT("Headline"), long (size.x / 2 - w / 2), 10 );
*/
}

// MyTopLabels

IMPLEMENT_DYNAMIC_CLASS(MyTopLabels,wxWindow)

BEGIN_EVENT_TABLE(MyTopLabels, wxWindow)
  EVT_PAINT(      MyTopLabels::OnPaint)
END_EVENT_TABLE()

MyTopLabels::MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
  : wxWindow( parent, id, pos, size )
{
    m_owner = parent;
}

void MyTopLabels::OnPaint( wxPaintEvent &event )
{
    wxPaintDC dc(this);

    // This is wrong..  it will translate both x and y if the
    // window is scrolled, the label windows are active in one
    // direction only.  Do the action below instead -- RL.
    //m_owner->PrepareDC( dc );

    int xScrollUnits, xOrigin;

    m_owner->GetViewStart( &xOrigin, 0 );
    m_owner->GetScrollPixelsPerUnit( &xScrollUnits, 0 );
    dc.SetDeviceOrigin( -xOrigin * xScrollUnits, 0 );

    dc.DrawText( "Column 1", 5, 5 );
    dc.DrawText( "Column 2", 105, 5 );
    dc.DrawText( "Column 3", 205, 5 );
}

// MyRightLabels

IMPLEMENT_DYNAMIC_CLASS(MyRightLabels,wxWindow)

BEGIN_EVENT_TABLE(MyRightLabels, wxWindow)
  EVT_PAINT(      MyRightLabels::OnPaint)
END_EVENT_TABLE()

MyRightLabels::MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
  : wxWindow( parent, id, pos, size )
{
    m_owner = parent;
}

void MyRightLabels::OnPaint( wxPaintEvent &event )
{
    wxPaintDC dc(this);

    // This is wrong..  it will translate both x and y if the
    // window is scrolled, the label windows are active in one
    // direction only.  Do the action below instead -- RL.
    //m_owner->PrepareDC( dc );

    int yScrollUnits, yOrigin;

    m_owner->GetViewStart( 0, &yOrigin );
    m_owner->GetScrollPixelsPerUnit( 0, &yScrollUnits );
    dc.SetDeviceOrigin( 0, -yOrigin * yScrollUnits );

    dc.DrawText( "Row 1", 5, 5 );
    dc.DrawText( "Row 2", 5, 30 );
    dc.DrawText( "Row 3", 5, 55 );
    dc.DrawText( "Row 4", 5, 80 );
    dc.DrawText( "Row 5", 5, 105 );
    dc.DrawText( "Row 6", 5, 130 );
}

// MyCanvas

IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxPanel)

BEGIN_EVENT_TABLE(MyCanvas, wxPanel)
  EVT_PAINT(      MyCanvas::OnPaint)
END_EVENT_TABLE()

MyCanvas::MyCanvas( wxScrolledWindow *parent, MyTopLabels *top, MyRightLabels *right,
    wxWindowID id, const wxPoint &pos, const wxSize &size )
        : wxPanel( parent, id, pos, size, wxSUNKEN_BORDER, "test canvas" )
{
    m_owner = parent;
    m_topLabels = top;
    m_rightLabels = right;

    (void)new wxButton( this, -1, "Hallo I", wxPoint(0,50), wxSize(100,25) );
    (void)new wxButton( this, -1, "Hallo II", wxPoint(200,50), wxSize(100,25) );

    (void)new wxTextCtrl( this, -1, "Text I", wxPoint(0,100), wxSize(100,25) );
    (void)new wxTextCtrl( this, -1, "Text II", wxPoint(200,100), wxSize(100,25) );

    SetBackgroundColour( wxT("WHEAT") );

    SetCursor( wxCursor( wxCURSOR_IBEAM ) );
}

MyCanvas::~MyCanvas()
{
}

void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
    wxPaintDC dc( this );
    m_owner->PrepareDC( dc );

    dc.SetPen( *wxBLACK_PEN );

    // OK, let's assume we are a grid control and we have two
    // grid cells. Here in OnPaint we want to know which cell
    // to redraw so that we prevent redrawing cells that don't
    // need to get redrawn. We have one cell at (0,0) and one
    // more at (200,0), both having a size of (100,25).

    // We can query how much the window has been scrolled
    // by calling CalcUnscrolledPosition()

    int scroll_x = 0;
    int scroll_y = 0;
    m_owner->CalcUnscrolledPosition( scroll_x, scroll_y, &scroll_x, &scroll_y );

    // We also need to know the size of the window to see which
    // cells are completely hidden and not get redrawn

    int size_x = 0;
    int size_y = 0;
    GetClientSize( &size_x, &size_y );

    // First cell: (0,0)(100,25)
    // It it on screen?
    if ((0+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
        (0-scroll_x < size_x) && (0-scroll_y < size_y))
    {
        // Has the region on screen been exposed?
        if (IsExposed(0,0,100,25))
        {
            wxLogMessage( wxT("Redraw first cell") );
            dc.DrawRectangle( 0, 0, 100, 25 );
            dc.DrawText( "First Cell", 5, 5 );
        }
    }


    // Second cell: (0,200)(100,25)
    // It it on screen?
    if ((200+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
        (200-scroll_x < size_x) && (0-scroll_y < size_y))
    {
        // Has the region on screen been exposed?
        if (IsExposed(200,0,100,25))
        {
            wxLogMessage( wxT("Redraw second cell") );
            dc.DrawRectangle( 200, 0, 100, 25 );
            dc.DrawText( "Second Cell", 205, 5 );
        }
    }

}

void MyCanvas::ScrollWindow( int dx, int dy, const wxRect *rect )
{
    wxPanel::ScrollWindow( dx, dy, rect );
    m_topLabels->ScrollWindow( dx, 0, rect );
    m_rightLabels->ScrollWindow( 0, dy, rect );
}

// MyFrame

const int ID_QUIT  = 108;
const int ID_FULL  = 109;
const int ID_ABOUT = 110;

IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )

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

MyFrame::MyFrame()
       : wxFrame( (wxFrame *)NULL, -1, "wxScrolledWindow sample",
                  wxPoint(20,20), wxSize(470,500) )
{
    wxMenu *file_menu = new wxMenu();
    file_menu->Append( ID_ABOUT, "&About...");
    file_menu->Append( ID_FULL, "&Full screen on/off");
    file_menu->Append( ID_QUIT, "E&xit\tAlt-X");

    wxMenuBar *menu_bar = new wxMenuBar();
    menu_bar->Append(file_menu, "&File");

    SetMenuBar( menu_bar );

    CreateStatusBar(2);
    int widths[] = { -1, 100 };
    SetStatusWidths( 2, widths );

    m_scrolled = new MyScrolledWindow( this, -1, wxDefaultPosition, wxSize(100,100) );
    m_scrolled->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 );
    topsizer->Add( m_scrolled, 1, wxEXPAND );
    topsizer->Add( m_log, 0, wxEXPAND );

    SetAutoLayout( TRUE );
    SetSizer( topsizer );
}

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

void MyFrame::OnFullScreen( wxCommandEvent &WXUNUSED(event) )
{
   ShowFullScreen( !IsFullScreen(), wxFULLSCREEN_NOBORDER|wxFULLSCREEN_NOCAPTION );
}

void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
{
  (void)wxMessageBox( "wxScroll demo II\n"
                      "Robert Roebling (c) 1998",
                      "About wxScroll II Demo", wxICON_INFORMATION | wxOK );
}

//-----------------------------------------------------------------------------
// MyApp
//-----------------------------------------------------------------------------

bool MyApp::OnInit()
{
    wxFrame *frame = new MyFrame();
    frame->Show( TRUE );

    return TRUE;
}
Commit	Line	Data
ecab4dba RR	1	/*
	2	* Program: scrollsub
	3	*
	4	* Author: Robert Roebling
	5	*
	6	* Copyright: (C) 1999, Robert Roebling
	7	*
	8	*/
	9
	10	// For compilers that support precompilation, includes "wx/wx.h".
	11	#include "wx/wxprec.h"
	12
	13	#ifdef __BORLANDC__
	14	#pragma hdrstop
	15	#endif
	16
	17	#ifndef WX_PRECOMP
	18	#include "wx/wx.h"
	19	#endif
	20
	21	#include "wx/image.h"
	22	#include "wx/listctrl.h"
	23	#include "wx/sizer.h"
	24	#include "wx/log.h"
	25
	26
	27	// derived classes
	28
	29	class MyFrame;
	30	class MyScrolledWindow;
	31	class MyCanvas;
	32	class MyApp;
	33
	34	// MyScrolledWindow
	35
	36	class MyScrolledWindow: public wxScrolledWindow
	37	{
	38	public:
	39	MyScrolledWindow() {}
	40	MyScrolledWindow( wxWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
	41	~MyScrolledWindow();
	42	void OnPaint( wxPaintEvent &event );
	43
	44	private:
	45	MyCanvas *m_canvas;
	46
	47	DECLARE_DYNAMIC_CLASS(MyScrolledWindow)
	48	DECLARE_EVENT_TABLE()
	49	};
	50
dfd6b52f RR	51	// MyTopLabels
	52
	53	class MyTopLabels: public wxWindow
	54	{
	55	public:
	56	MyTopLabels() {}
	57	MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
5f3286d1	58
dfd6b52f	59	void OnPaint( wxPaintEvent &event );
5f3286d1	60
dfd6b52f RR	61	private:
dfd6b52f RR	62	wxScrolledWindow *m_owner;
5f3286d1	63
dfd6b52f RR	64	DECLARE_DYNAMIC_CLASS(MyTopLabels)
	65	DECLARE_EVENT_TABLE()
	66	};
	67
	68	// MyRightLabels
	69
	70	class MyRightLabels: public wxWindow
	71	{
	72	public:
	73	MyRightLabels() {}
	74	MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size );
5f3286d1	75
dfd6b52f	76	void OnPaint( wxPaintEvent &event );
5f3286d1	77
dfd6b52f RR	78	private:
dfd6b52f RR	79	wxScrolledWindow *m_owner;
5f3286d1	80
dfd6b52f RR	81	DECLARE_DYNAMIC_CLASS(MyRightLabels)
	82	DECLARE_EVENT_TABLE()
	83	};
	84
ecab4dba RR	85	// MyCanvas
	86
	87	class MyCanvas: public wxPanel
	88	{
	89	public:
	90	MyCanvas() {}
dfd6b52f RR	91	MyCanvas( wxScrolledWindow parent, MyTopLabels top, MyRightLabels *right,
dfd6b52f RR	92	wxWindowID id, const wxPoint &pos, const wxSize &size );
ecab4dba RR	93	~MyCanvas();
ecab4dba RR	94	void OnPaint( wxPaintEvent &event );
dfd6b52f	95	void ScrollWindow( int dx, int dy, const wxRect *rect );
ecab4dba RR	96
	97	private:
	98	wxScrolledWindow *m_owner;
dfd6b52f RR	99	MyTopLabels *m_topLabels;
dfd6b52f RR	100	MyRightLabels *m_rightLabels;
ecab4dba RR	101
	102	DECLARE_DYNAMIC_CLASS(MyCanvas)
	103	DECLARE_EVENT_TABLE()
	104	};
	105
	106	// MyFrame
	107
	108	class MyFrame: public wxFrame
	109	{
	110	public:
	111	MyFrame();
	112
	113	void OnAbout( wxCommandEvent &event );
	114	void OnQuit( wxCommandEvent &event );
3d0c4d2e	115	void OnFullScreen( wxCommandEvent &event );
ecab4dba RR	116
	117	wxScrolledWindow *m_scrolled;
	118	wxTextCtrl *m_log;
	119
	120	private:
	121	DECLARE_DYNAMIC_CLASS(MyFrame)
	122	DECLARE_EVENT_TABLE()
	123	};
	124
	125	// MyApp
	126
	127	class MyApp: public wxApp
	128	{
	129	public:
	130	virtual bool OnInit();
	131	};
	132
	133	// main program
	134
	135	IMPLEMENT_APP(MyApp)
	136
	137	// MyScrolledWindow
	138
	139	IMPLEMENT_DYNAMIC_CLASS(MyScrolledWindow, wxScrolledWindow)
	140
	141	BEGIN_EVENT_TABLE(MyScrolledWindow, wxScrolledWindow)
	142	EVT_PAINT( MyScrolledWindow::OnPaint)
	143	END_EVENT_TABLE()
	144
	145	MyScrolledWindow::MyScrolledWindow( wxWindow *parent, wxWindowID id,
	146	const wxPoint &pos, const wxSize &size )
	147	: wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER, "test canvas" )
	148	{
dfd6b52f RR	149	MyTopLabels *top = new MyTopLabels( this, -1, wxDefaultPosition, wxSize(-1,25) );
	150	MyRightLabels *right = new MyRightLabels( this, -1, wxDefaultPosition, wxSize(60,-1) );
	151
	152	m_canvas = new MyCanvas( this, top, right, -1, wxDefaultPosition, wxDefaultSize );
5f3286d1	153
ecab4dba RR	154	SetTargetWindow( m_canvas );
ecab4dba RR	155
a60b1f5d	156	SetBackgroundColour( wxT("WHEAT") );
5f3286d1	157
ecab4dba	158	SetCursor( wxCursor( wxCURSOR_HAND ) );
5f3286d1	159
dfd6b52f	160	wxBoxSizer *mainsizer = new wxBoxSizer( wxVERTICAL );
5f3286d1	161
dfd6b52f RR	162	wxBoxSizer *topsizer = new wxBoxSizer( wxHORIZONTAL );
dfd6b52f RR	163	topsizer->Add( 60,25 );
5f3286d1 VZ	164	topsizer->Add( top, 1, wxEXPAND );
5f3286d1 VZ	165
dfd6b52f	166	mainsizer->Add( topsizer, 0, wxEXPAND );
5f3286d1	167
dfd6b52f RR	168	wxBoxSizer *middlesizer = new wxBoxSizer( wxHORIZONTAL );
	169	middlesizer->Add( right, 0, wxEXPAND );
	170	middlesizer->Add( m_canvas, 1, wxEXPAND );
5f3286d1	171
dfd6b52f	172	mainsizer->Add( middlesizer, 1, wxEXPAND );
ecab4dba RR	173
ecab4dba RR	174	SetAutoLayout( TRUE );
dfd6b52f	175	SetSizer( mainsizer );
ecab4dba RR	176	}
	177
	178	MyScrolledWindow::~MyScrolledWindow()
	179	{
	180	}
	181
	182	void MyScrolledWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
	183	{
	184	wxPaintDC dc( this );
	185
dfd6b52f	186	/*
ecab4dba	187	wxSize size( GetClientSize() );
5f3286d1	188
ecab4dba RR	189	long w,h;
	190	dc.GetTextExtent( wxT("Headline"), &w, &h );
	191
	192	dc.DrawText( wxT("Headline"), long (size.x / 2 - w / 2), 10 );
dfd6b52f RR	193	*/
	194	}
	195
	196	// MyTopLabels
	197
	198	IMPLEMENT_DYNAMIC_CLASS(MyTopLabels,wxWindow)
	199
	200	BEGIN_EVENT_TABLE(MyTopLabels, wxWindow)
	201	EVT_PAINT( MyTopLabels::OnPaint)
	202	END_EVENT_TABLE()
	203
	204	MyTopLabels::MyTopLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
	205	: wxWindow( parent, id, pos, size )
	206	{
	207	m_owner = parent;
	208	}
	209
	210	void MyTopLabels::OnPaint( wxPaintEvent &event )
	211	{
	212	wxPaintDC dc(this);
566d84a7 RL	213
	214	// This is wrong.. it will translate both x and y if the
	215	// window is scrolled, the label windows are active in one
	216	// direction only. Do the action below instead -- RL.
	217	//m_owner->PrepareDC( dc );
	218
	219	int xScrollUnits, xOrigin;
	220
	221	m_owner->GetViewStart( &xOrigin, 0 );
	222	m_owner->GetScrollPixelsPerUnit( &xScrollUnits, 0 );
	223	dc.SetDeviceOrigin( -xOrigin * xScrollUnits, 0 );
	224
8f75cb6c RR	225	dc.DrawText( "Column 1", 5, 5 );
	226	dc.DrawText( "Column 2", 105, 5 );
	227	dc.DrawText( "Column 3", 205, 5 );
dfd6b52f RR	228	}
	229
	230	// MyRightLabels
	231
	232	IMPLEMENT_DYNAMIC_CLASS(MyRightLabels,wxWindow)
	233
	234	BEGIN_EVENT_TABLE(MyRightLabels, wxWindow)
	235	EVT_PAINT( MyRightLabels::OnPaint)
	236	END_EVENT_TABLE()
	237
	238	MyRightLabels::MyRightLabels( wxScrolledWindow *parent, wxWindowID id, const wxPoint &pos, const wxSize &size )
	239	: wxWindow( parent, id, pos, size )
	240	{
	241	m_owner = parent;
	242	}
	243
	244	void MyRightLabels::OnPaint( wxPaintEvent &event )
	245	{
	246	wxPaintDC dc(this);
566d84a7 RL	247
	248	// This is wrong.. it will translate both x and y if the
	249	// window is scrolled, the label windows are active in one
	250	// direction only. Do the action below instead -- RL.
	251	//m_owner->PrepareDC( dc );
	252
	253	int yScrollUnits, yOrigin;
	254
	255	m_owner->GetViewStart( 0, &yOrigin );
	256	m_owner->GetScrollPixelsPerUnit( 0, &yScrollUnits );
	257	dc.SetDeviceOrigin( 0, -yOrigin * yScrollUnits );
	258
dfd6b52f RR	259	dc.DrawText( "Row 1", 5, 5 );
	260	dc.DrawText( "Row 2", 5, 30 );
	261	dc.DrawText( "Row 3", 5, 55 );
	262	dc.DrawText( "Row 4", 5, 80 );
	263	dc.DrawText( "Row 5", 5, 105 );
	264	dc.DrawText( "Row 6", 5, 130 );
ecab4dba RR	265	}
	266
	267	// MyCanvas
	268
	269	IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxPanel)
	270
	271	BEGIN_EVENT_TABLE(MyCanvas, wxPanel)
	272	EVT_PAINT( MyCanvas::OnPaint)
	273	END_EVENT_TABLE()
	274
dfd6b52f RR	275	MyCanvas::MyCanvas( wxScrolledWindow parent, MyTopLabels top, MyRightLabels *right,
dfd6b52f RR	276	wxWindowID id, const wxPoint &pos, const wxSize &size )
ecab4dba RR	277	: wxPanel( parent, id, pos, size, wxSUNKEN_BORDER, "test canvas" )
	278	{
	279	m_owner = parent;
dfd6b52f RR	280	m_topLabels = top;
dfd6b52f RR	281	m_rightLabels = right;
5f3286d1	282
cddfbd9f RR	283	(void)new wxButton( this, -1, "Hallo I", wxPoint(0,50), wxSize(100,25) );
cddfbd9f RR	284	(void)new wxButton( this, -1, "Hallo II", wxPoint(200,50), wxSize(100,25) );
5f3286d1	285
dfd6b52f RR	286	(void)new wxTextCtrl( this, -1, "Text I", wxPoint(0,100), wxSize(100,25) );
dfd6b52f RR	287	(void)new wxTextCtrl( this, -1, "Text II", wxPoint(200,100), wxSize(100,25) );
ecab4dba	288
a60b1f5d	289	SetBackgroundColour( wxT("WHEAT") );
5f3286d1	290
ecab4dba RR	291	SetCursor( wxCursor( wxCURSOR_IBEAM ) );
	292	}
	293
	294	MyCanvas::~MyCanvas()
	295	{
	296	}
	297
	298	void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
	299	{
	300	wxPaintDC dc( this );
	301	m_owner->PrepareDC( dc );
	302
76db86e7	303	dc.SetPen( *wxBLACK_PEN );
5f3286d1	304
17800993 RR	305	// OK, let's assume we are a grid control and we have two
	306	// grid cells. Here in OnPaint we want to know which cell
	307	// to redraw so that we prevent redrawing cells that don't
	308	// need to get redrawn. We have one cell at (0,0) and one
	309	// more at (200,0), both having a size of (100,25).
5f3286d1 VZ	310
5f3286d1 VZ	311	// We can query how much the window has been scrolled
17800993	312	// by calling CalcUnscrolledPosition()
5f3286d1	313
17800993 RR	314	int scroll_x = 0;
	315	int scroll_y = 0;
	316	m_owner->CalcUnscrolledPosition( scroll_x, scroll_y, &scroll_x, &scroll_y );
5f3286d1	317
17800993 RR	318	// We also need to know the size of the window to see which
17800993 RR	319	// cells are completely hidden and not get redrawn
5f3286d1	320
17800993 RR	321	int size_x = 0;
	322	int size_y = 0;
	323	GetClientSize( &size_x, &size_y );
5f3286d1	324
17800993 RR	325	// First cell: (0,0)(100,25)
	326	// It it on screen?
	327	if ((0+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
	328	(0-scroll_x < size_x) && (0-scroll_y < size_y))
	329	{
dfd6b52f	330	// Has the region on screen been exposed?
2f6c54eb VZ	331	if (IsExposed(0,0,100,25))
	332	{
	333	wxLogMessage( wxT("Redraw first cell") );
17800993	334	dc.DrawRectangle( 0, 0, 100, 25 );
2f6c54eb VZ	335	dc.DrawText( "First Cell", 5, 5 );
2f6c54eb VZ	336	}
17800993	337	}
5f3286d1 VZ	338
5f3286d1 VZ	339
17800993 RR	340	// Second cell: (0,200)(100,25)
	341	// It it on screen?
	342	if ((200+100-scroll_x > 0) && (0+25-scroll_y > 0) &&
	343	(200-scroll_x < size_x) && (0-scroll_y < size_y))
	344	{
dfd6b52f	345	// Has the region on screen been exposed?
2f6c54eb VZ	346	if (IsExposed(200,0,100,25))
	347	{
	348	wxLogMessage( wxT("Redraw second cell") );
17800993	349	dc.DrawRectangle( 200, 0, 100, 25 );
2f6c54eb VZ	350	dc.DrawText( "Second Cell", 205, 5 );
2f6c54eb VZ	351	}
17800993	352	}
5f3286d1	353
ecab4dba RR	354	}
ecab4dba RR	355
dfd6b52f RR	356	void MyCanvas::ScrollWindow( int dx, int dy, const wxRect *rect )
	357	{
	358	wxPanel::ScrollWindow( dx, dy, rect );
	359	m_topLabels->ScrollWindow( dx, 0, rect );
	360	m_rightLabels->ScrollWindow( 0, dy, rect );
	361	}
ecab4dba RR	362
	363	// MyFrame
	364
	365	const int ID_QUIT = 108;
3d0c4d2e RR	366	const int ID_FULL = 109;
3d0c4d2e RR	367	const int ID_ABOUT = 110;
ecab4dba RR	368
	369	IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
	370
	371	BEGIN_EVENT_TABLE(MyFrame,wxFrame)
	372	EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
	373	EVT_MENU (ID_QUIT, MyFrame::OnQuit)
3d0c4d2e	374	EVT_MENU (ID_FULL, MyFrame::OnFullScreen)
ecab4dba RR	375	END_EVENT_TABLE()
	376
	377	MyFrame::MyFrame()
	378	: wxFrame( (wxFrame *)NULL, -1, "wxScrolledWindow sample",
	379	wxPoint(20,20), wxSize(470,500) )
	380	{
	381	wxMenu *file_menu = new wxMenu();
3d0c4d2e RR	382	file_menu->Append( ID_ABOUT, "&About...");
3d0c4d2e RR	383	file_menu->Append( ID_FULL, "&Full screen on/off");
ecab4dba RR	384	file_menu->Append( ID_QUIT, "E&xit\tAlt-X");
	385
	386	wxMenuBar *menu_bar = new wxMenuBar();
	387	menu_bar->Append(file_menu, "&File");
	388
	389	SetMenuBar( menu_bar );
	390
	391	CreateStatusBar(2);
	392	int widths[] = { -1, 100 };
	393	SetStatusWidths( 2, widths );
	394
dfd6b52f	395	m_scrolled = new MyScrolledWindow( this, -1, wxDefaultPosition, wxSize(100,100) );
ecab4dba	396	m_scrolled->SetScrollbars( 10, 10, 50, 100 );
5f3286d1	397
ecab4dba RR	398	m_log = new wxTextCtrl( this, -1, "This is the log window.\n", wxPoint(0,0), wxSize(100,100), wxTE_MULTILINE );
	399	wxLog *old_log = wxLog::SetActiveTarget( new wxLogTextCtrl( m_log ) );
	400	delete old_log;
5f3286d1	401
ecab4dba	402	wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
ecab4dba RR	403	topsizer->Add( m_scrolled, 1, wxEXPAND );
	404	topsizer->Add( m_log, 0, wxEXPAND );
	405
	406	SetAutoLayout( TRUE );
	407	SetSizer( topsizer );
	408	}
	409
	410	void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
	411	{
	412	Close( TRUE );
	413	}
	414
3d0c4d2e RR	415	void MyFrame::OnFullScreen( wxCommandEvent &WXUNUSED(event) )
	416	{
	417	ShowFullScreen( !IsFullScreen(), wxFULLSCREEN_NOBORDER\|wxFULLSCREEN_NOCAPTION );
	418	}
	419
ecab4dba RR	420	void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
	421	{
	422	(void)wxMessageBox( "wxScroll demo II\n"
	423	"Robert Roebling (c) 1998",
	424	"About wxScroll II Demo", wxICON_INFORMATION \| wxOK );
	425	}
	426
	427	//-----------------------------------------------------------------------------
	428	// MyApp
	429	//-----------------------------------------------------------------------------
	430
	431	bool MyApp::OnInit()
	432	{
	433	wxFrame *frame = new MyFrame();
	434	frame->Show( TRUE );
	435
	436	return TRUE;
	437	}
	438