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wxWidgets/samples/scroll/scroll.cpp
Mattia Barbon a60b1f5d57 Unicode compilation fixed for almost all samples 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12584 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2001-11-22 09:11:33 +00:00

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/*
* Program: scroll
*
* Author: Robert Roebling
*
* Copyright: (C) 1998, 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 MyApp;
// MyCanvas
class MyCanvas: public wxScrolledWindow
{
public:
MyCanvas() {}
MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
~MyCanvas();
void OnPaint( wxPaintEvent &event );
void OnQueryPosition( wxCommandEvent &event );
void OnAddButton( wxCommandEvent &event );
void OnDeleteButton( wxCommandEvent &event );
void OnMoveButton( wxCommandEvent &event );
void OnScrollWin( wxCommandEvent &event );
void OnMouseDown( wxMouseEvent &event );
wxButton *m_button;
DECLARE_DYNAMIC_CLASS(MyCanvas)
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
// ----------------------------------------------------------------------------
class MyFrame: public wxFrame
{
public:
MyFrame();
void OnAbout( wxCommandEvent &event );
void OnQuit( wxCommandEvent &event );
void OnDeleteAll( wxCommandEvent &event );
void OnInsertNew( wxCommandEvent &event );
MyCanvas *m_canvas;
wxTextCtrl *m_log;
DECLARE_DYNAMIC_CLASS(MyFrame)
DECLARE_EVENT_TABLE()
};
// MyApp
class MyApp: public wxApp
{
public:
virtual bool OnInit();
};
// main program
IMPLEMENT_APP(MyApp)
// ids
#define ID_ADDBUTTON 1
#define ID_DELBUTTON 2
#define ID_MOVEBUTTON 3
#define ID_SCROLLWIN 4
#define ID_QUERYPOS 5
#define ID_NEWBUTTON 10
// MyCanvas
IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
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_MOVEBUTTON, MyCanvas::OnMoveButton)
EVT_BUTTON( ID_SCROLLWIN, MyCanvas::OnScrollWin)
END_EVENT_TABLE()
MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
const wxPoint &pos, const wxSize &size )
: wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER | wxTAB_TRAVERSAL, "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) );
#if 0
wxString choices[] =
{
"This",
"is one of my",
"really",
"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 );
m_listCtrl->InsertColumn(0, "First", wxLIST_FORMAT_LEFT, 90);
m_listCtrl->InsertColumn(1, "Last", wxLIST_FORMAT_LEFT, 90);
for ( int i=0; i < 30; i++)
{
char buf[20];
sprintf(buf, "Item %d", i);
m_listCtrl->InsertItem(i, buf);
}
m_listCtrl->SetItemState( 3, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
(void) new wxListBox( this, -1, wxPoint(260,280), wxSize(120,120), 5, choices, wxLB_ALWAYS_SB );
#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( 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( wxT("WHEAT") );
test->SetCursor( wxCursor( wxCURSOR_PENCIL ) );
test2 = new wxButton( test, -1, "Hallo", wxPoint(10,10) );
test2->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
#endif
SetBackgroundColour( wxT("BLUE") );
SetCursor( wxCursor( wxCURSOR_IBEAM ) );
}
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() );
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) )
{
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 )
{
wxLogMessage( wxT("Deleting button inserted with \"Add button\"...") );
wxWindow *win = FindWindow( ID_NEWBUTTON );
if (win)
win->Destroy();
else
wxLogMessage( wxT("-> No window with id = ID_NEWBUTTON found.") );
}
void MyCanvas::OnMoveButton( wxCommandEvent &event )
{
wxLogMessage( wxT("Moving button 10 pixels downward..") );
wxWindow *win = FindWindow( event.GetId() );
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) )
{
wxLogMessage( wxT("Scrolling 2 units up.\nThe white square and the controls should move equally!") );
int x,y;
GetViewStart( &x, &y );
Scroll( -1, y+2 );
}
// 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)
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",
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");
wxMenuBar *menu_bar = new wxMenuBar();
menu_bar->Append(file_menu, "&File");
SetMenuBar( menu_bar );
CreateStatusBar(2);
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 );
wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
topsizer->Add( m_canvas, 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, "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 );
}
//-----------------------------------------------------------------------------
// MyApp
//-----------------------------------------------------------------------------
bool MyApp::OnInit()
{
wxFrame *frame = new MyFrame();
frame->Show( 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;
}
}
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