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more scrolling tests

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10926 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2001-07-09 22:54:26 +00:00
parent 3febfc6bd7
commit 8a73bf3d98
1 changed files with 116 additions and 21 deletions
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137
samples/scroll/scroll.cpp
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@ -34,7 +34,7 @@ class MyApp;
class MyCanvas: public wxScrolledWindow
{
public:
MyCanvas() {};
MyCanvas() {}
MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
~MyCanvas();
void OnPaint( wxPaintEvent &event );
@ -44,7 +44,6 @@ public:
void OnMoveButton( wxCommandEvent &event );
void OnScrollWin( wxCommandEvent &event );
void OnMouseDown( wxMouseEvent &event );
void OnScroll( wxScrollWinEvent &event );
wxButton *m_button;
@ -52,7 +51,54 @@ public:
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
{
@ -105,7 +151,6 @@ BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_BUTTON( ID_DELBUTTON, MyCanvas::OnDeleteButton)
EVT_BUTTON( ID_MOVEBUTTON, MyCanvas::OnMoveButton)
EVT_BUTTON( ID_SCROLLWIN, MyCanvas::OnScrollWin)
EVT_SCROLLWIN( MyCanvas::OnScroll)
END_EVENT_TABLE()
MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
@ -141,8 +186,8 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
(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);
@ -159,7 +204,7 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
#endif
wxPanel *test = new wxPanel( this, -1, wxPoint(10, 10), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
wxPanel *test = new wxPanel( this, -1, wxPoint(10, 110), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
test->SetBackgroundColour( "WHEAT" );
#if 0
@ -260,15 +305,6 @@ void MyCanvas::OnScrollWin( wxCommandEvent &WXUNUSED(event) )
Scroll( -1, y+2 );
}
void MyCanvas::OnScroll( wxScrollWinEvent &event )
{
if (( event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE ))
{
wxLogMessage( "Thumb released; position: %u", event.GetPosition() );
}
event.Skip();
}
// MyFrame
const int ID_QUIT = 108;
@ -306,15 +342,15 @@ MyFrame::MyFrame()
m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(100,100) );
m_canvas->SetScrollbars( 10, 10, 50, 100 );
#if 0
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;
#endif
wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
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 );
@ -354,3 +390,62 @@ bool MyApp::OnInit()
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;
}
}