more scrolling tests
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10926 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
parent
3febfc6bd7
commit
8a73bf3d98
@ -34,7 +34,7 @@ class MyApp;
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class MyCanvas: public wxScrolledWindow
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{
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public:
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MyCanvas() {};
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MyCanvas() {}
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MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size );
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~MyCanvas();
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void OnPaint( wxPaintEvent &event );
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@ -44,7 +44,6 @@ public:
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void OnMoveButton( wxCommandEvent &event );
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void OnScrollWin( wxCommandEvent &event );
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void OnMouseDown( wxMouseEvent &event );
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void OnScroll( wxScrollWinEvent &event );
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wxButton *m_button;
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@ -52,7 +51,54 @@ public:
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DECLARE_EVENT_TABLE()
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};
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// ----------------------------------------------------------------------------
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// MyScrolledWindow classes: examples of wxScrolledWindow usage
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// ----------------------------------------------------------------------------
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// base class for both of them
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class MyScrolledWindowBase : public wxScrolledWindow
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{
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public:
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MyScrolledWindowBase(wxWindow *parent) : wxScrolledWindow(parent)
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{
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m_nLines = 100;
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InitScrollbars();
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}
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protected:
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// set the scrollbar params
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void InitScrollbars();
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// the height of one line on screen
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wxCoord m_hLine;
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// the number of lines we draw
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size_t m_nLines;
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};
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// this class does "stupid" redrawing - it redraws everything each time
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class MyScrolledWindowDumb : public MyScrolledWindowBase
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{
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public:
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MyScrolledWindowDumb(wxWindow *parent) : MyScrolledWindowBase(parent) { }
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virtual void OnDraw(wxDC& dc);
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};
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// this class does "smart" redrawing - only redraws the lines which must be
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// redrawn
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class MyScrolledWindowSmart : public MyScrolledWindowBase
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{
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public:
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MyScrolledWindowSmart(wxWindow *parent) : MyScrolledWindowBase(parent) { }
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virtual void OnDraw(wxDC& dc);
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};
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// ----------------------------------------------------------------------------
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// MyFrame
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// ----------------------------------------------------------------------------
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class MyFrame: public wxFrame
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{
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@ -105,7 +151,6 @@ BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
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EVT_BUTTON( ID_DELBUTTON, MyCanvas::OnDeleteButton)
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EVT_BUTTON( ID_MOVEBUTTON, MyCanvas::OnMoveButton)
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EVT_BUTTON( ID_SCROLLWIN, MyCanvas::OnScrollWin)
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EVT_SCROLLWIN( MyCanvas::OnScroll)
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END_EVENT_TABLE()
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MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
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@ -141,8 +186,8 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
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(void) new wxRadioBox( this, -1, "This", wxPoint(10,440), wxDefaultSize, 5, choices, 2, wxRA_SPECIFY_ROWS );
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wxListCtrl *m_listCtrl = new wxListCtrl(
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this, -1, wxPoint(200, 110), wxSize(180, 120),
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wxLC_REPORT | wxSIMPLE_BORDER | wxLC_SINGLE_SEL );
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this, -1, wxPoint(200, 110), wxSize(180, 120),
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wxLC_REPORT | wxSIMPLE_BORDER | wxLC_SINGLE_SEL );
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m_listCtrl->InsertColumn(0, "First", wxLIST_FORMAT_LEFT, 90);
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m_listCtrl->InsertColumn(1, "Last", wxLIST_FORMAT_LEFT, 90);
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@ -159,7 +204,7 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
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#endif
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wxPanel *test = new wxPanel( this, -1, wxPoint(10, 10), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
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wxPanel *test = new wxPanel( this, -1, wxPoint(10, 110), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
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test->SetBackgroundColour( "WHEAT" );
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#if 0
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@ -260,15 +305,6 @@ void MyCanvas::OnScrollWin( wxCommandEvent &WXUNUSED(event) )
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Scroll( -1, y+2 );
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}
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void MyCanvas::OnScroll( wxScrollWinEvent &event )
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{
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if (( event.GetEventType() == wxEVT_SCROLLWIN_THUMBRELEASE ))
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{
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wxLogMessage( "Thumb released; position: %u", event.GetPosition() );
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}
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event.Skip();
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}
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// MyFrame
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const int ID_QUIT = 108;
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@ -306,15 +342,15 @@ MyFrame::MyFrame()
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m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(100,100) );
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m_canvas->SetScrollbars( 10, 10, 50, 100 );
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#if 0
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m_log = new wxTextCtrl( this, -1, "This is the log window.\n", wxPoint(0,0), wxSize(100,100), wxTE_MULTILINE );
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wxLog *old_log = wxLog::SetActiveTarget( new wxLogTextCtrl( m_log ) );
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delete old_log;
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#endif
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wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
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topsizer->Add( m_canvas, 1, wxEXPAND );
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// topsizer->Add( m_log, 0, wxEXPAND );
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wxSizer *sizerBtm = new wxBoxSizer(wxHORIZONTAL);
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sizerBtm->Add( new MyScrolledWindowDumb(this), 1, wxEXPAND );
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sizerBtm->Add( new MyScrolledWindowSmart(this), 1, wxEXPAND );
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topsizer->Add( sizerBtm, 1, wxEXPAND );
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SetAutoLayout( TRUE );
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SetSizer( topsizer );
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@ -354,3 +390,62 @@ bool MyApp::OnInit()
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return TRUE;
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}
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// ----------------------------------------------------------------------------
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// MyScrolledWindowXXX
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// ----------------------------------------------------------------------------
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void MyScrolledWindowBase::InitScrollbars()
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{
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wxClientDC dc(this);
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dc.GetTextExtent(_T("Line 17"), NULL, &m_hLine);
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// no horz scrolling
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SetScrollbars(0, m_hLine, 0, m_nLines + 1, 0, 0, TRUE /* no refresh */);
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}
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void MyScrolledWindowDumb::OnDraw(wxDC& dc)
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{
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// this is useful to see which lines are redrawn
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static size_t s_redrawCount = 0;
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dc.SetTextForeground(s_redrawCount++ % 2 ? *wxRED : *wxBLUE);
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wxCoord y = 0;
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for ( size_t line = 0; line < m_nLines; line++ )
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{
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wxCoord yPhys;
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CalcScrolledPosition(0, y, NULL, &yPhys);
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dc.DrawText(wxString::Format(_T("Line %u (logical %d, physical %d)"),
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line, y, yPhys), 0, y);
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y += m_hLine;
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}
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}
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void MyScrolledWindowSmart::OnDraw(wxDC& dc)
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{
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// this is useful to see which lines are redrawn
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static size_t s_redrawCount = 0;
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dc.SetTextForeground(s_redrawCount++ % 2 ? *wxRED : *wxBLUE);
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// update region is always in device coords, translate to logical ones
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wxRect rectUpdate = GetUpdateRegion().GetBox();
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CalcUnscrolledPosition(rectUpdate.x, rectUpdate.y,
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&rectUpdate.x, &rectUpdate.y);
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size_t lineFrom = rectUpdate.y / m_hLine,
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lineTo = rectUpdate.GetBottom() / m_hLine;
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if ( lineTo > m_nLines - 1)
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lineTo = m_nLines - 1;
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wxCoord y = lineFrom*m_hLine;
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for ( size_t line = lineFrom; line <= lineTo; line++ )
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{
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wxCoord yPhys;
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CalcScrolledPosition(0, y, NULL, &yPhys);
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dc.DrawText(wxString::Format(_T("Line %u (logical %d, physical %d)"),
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line, y, yPhys), 0, y);
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y += m_hLine;
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}
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}
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