X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/eba0e4d417e4a57204abd04daa22919d4e2d5053..c4e2838090992384911a6a6aa44cac985d79a555:/samples/scroll/scroll.cpp diff --git a/samples/scroll/scroll.cpp b/samples/scroll/scroll.cpp index 901197db71..1bec08436a 100644 --- a/samples/scroll/scroll.cpp +++ b/samples/scroll/scroll.cpp @@ -4,6 +4,8 @@ * Author: Robert Roebling * * Copyright: (C) 1998, Robert Roebling + * 2002, Ron Lee + * 2003, Matt Gregory * */ @@ -19,6 +21,10 @@ #endif #include "wx/image.h" +#include "wx/listctrl.h" +#include "wx/sizer.h" +#include "wx/log.h" + // derived classes @@ -30,16 +36,151 @@ class MyApp; class MyCanvas: public wxScrolledWindow { public: - MyCanvas() {}; + MyCanvas() {} MyCanvas( wxWindow *parent, wxWindowID, const wxPoint &pos, const wxSize &size ); - ~MyCanvas(); + ~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() }; + +// ---------------------------------------------------------------------------- +// Autoscrolling example. +// ---------------------------------------------------------------------------- + +// this class uses the 'virtual' size attribute along with an internal +// sizer to automatically set up scrollbars as needed + +class MyAutoScrollWindow : public wxScrolledWindow +{ +private: + + wxButton *m_button; + +public: + + MyAutoScrollWindow( wxWindow *parent ); + + void OnResizeClick( wxCommandEvent &WXUNUSED( event ) ); + + 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 ) + { + wxClientDC dc(this); + dc.GetTextExtent(_T("Line 17"), NULL, &m_hLine); + } + +protected: + // 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 +// and sets the scrollbar extent directly. + +class MyScrolledWindowDumb : public MyScrolledWindowBase +{ +public: + MyScrolledWindowDumb(wxWindow *parent) : MyScrolledWindowBase(parent) + { + // no horz scrolling + SetScrollbars(0, m_hLine, 0, m_nLines + 1, 0, 0, true /* no refresh */); + } + + virtual void OnDraw(wxDC& dc); +}; + +// this class does "smart" redrawing - only redraws the lines which must be +// redrawn and sets the scroll rate and virtual size to affect the +// scrollbars. +// +// Note that this class should produce identical results to the one above. + +class MyScrolledWindowSmart : public MyScrolledWindowBase +{ +public: + MyScrolledWindowSmart(wxWindow *parent) : MyScrolledWindowBase(parent) + { + // no horz scrolling + SetScrollRate( 0, m_hLine ); + SetVirtualSize( -1, ( m_nLines + 1 ) * m_hLine ); + } + + virtual void OnDraw(wxDC& dc); +}; + +// ---------------------------------------------------------------------------- +// MyAutoTimedScrollingWindow: implements a text viewer with simple blocksize +// selection to test auto-scrolling functionality +// ---------------------------------------------------------------------------- + +class MyAutoTimedScrollingWindow : public wxScrolledWindow +{ +protected: // member data + // test data variables + static const wxChar* sm_testData; + static const int sm_lineCnt; // line count + static const int sm_lineLen; // line length in characters + // sizes for graphical data + wxCoord m_fontH, m_fontW; + // selection tracking + wxPoint m_selStart; // beginning of blockwise selection + wxPoint m_cursor; // end of blockwise selection (mouse position) + +protected: // gui stuff + wxFont m_font; + +public: // interface + MyAutoTimedScrollingWindow( wxWindow* parent ); + wxRect DeviceCoordsToGraphicalChars(wxRect updRect) const; + wxPoint DeviceCoordsToGraphicalChars(wxPoint pos) const; + wxPoint GraphicalCharToDeviceCoords(wxPoint pos) const; + wxRect LogicalCoordsToGraphicalChars(wxRect updRect) const; + wxPoint LogicalCoordsToGraphicalChars(wxPoint pos) const; + wxPoint GraphicalCharToLogicalCoords(wxPoint pos) const; + void MyRefresh(); + bool IsSelected(int chX, int chY) const; + static bool IsInside(int k, int bound1, int bound2); + static wxRect DCNormalize(wxCoord x, wxCoord y, wxCoord w, wxCoord h); + +protected: // event stuff + DECLARE_EVENT_TABLE() + void OnDraw(wxDC& dc); + void OnMouseLeftDown(wxMouseEvent& event); + void OnMouseLeftUp(wxMouseEvent& event); + void OnMouseMove(wxMouseEvent& event); + void OnScroll(wxScrollWinEvent& event); +}; + +// ---------------------------------------------------------------------------- // MyFrame +// ---------------------------------------------------------------------------- class MyFrame: public wxFrame { @@ -48,14 +189,19 @@ public: 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 { @@ -63,22 +209,53 @@ public: virtual bool OnInit(); }; + +// ---------------------------------------------------------------------------- // main program +// ---------------------------------------------------------------------------- IMPLEMENT_APP(MyApp) +// ids + +const long ID_ADDBUTTON = wxNewId(); +const long ID_DELBUTTON = wxNewId(); +const long ID_MOVEBUTTON = wxNewId(); +const long ID_SCROLLWIN = wxNewId(); +const long ID_QUERYPOS = wxNewId(); + +const long ID_NEWBUTTON = wxNewId(); + +// ---------------------------------------------------------------------------- // MyCanvas +// ---------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) - EVT_PAINT(MyCanvas::OnPaint) + 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 ) + : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER | wxTAB_TRAVERSAL, _T("test canvas") ) { + SetScrollRate( 10, 10 ); + SetVirtualSize( 500, 1000 ); + + (void) new wxButton( this, ID_ADDBUTTON, _T("add button"), wxPoint(10,10) ); + (void) new wxButton( this, ID_DELBUTTON, _T("del button"), wxPoint(10,40) ); + (void) new wxButton( this, ID_MOVEBUTTON, _T("move button"), wxPoint(150,10) ); + (void) new wxButton( this, ID_SCROLLWIN, _T("scroll win"), wxPoint(250,10) ); + +#if 0 + wxString choices[] = { "This", @@ -87,81 +264,302 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, "wonderful", "examples." }; - - (void) new wxButton( this, -1, "wxButton", wxPoint(10,10) ); - - (void) new wxTextCtrl( this, -1, "wxTextCtrl", wxPoint(10,50) ); - - (void) new wxRadioButton( this, -1, "Disable", wxPoint(10,90) ); - - (void) new wxComboBox( this, -1, "This", wxPoint(10,130), wxDefaultSize, 5, choices ); - - (void) new wxRadioBox( this, -1, "This", wxPoint(10,200), wxDefaultSize, 5, choices ); - - SetBackgroundColour( *wxWHITE ); + + m_button = new wxButton( this, ID_QUERYPOS, "Query position", wxPoint(10,110) ); + + (void) new wxTextCtrl( this, wxID_ANY, "wxTextCtrl", wxPoint(10,150), wxSize(80,wxDefaultCoord) ); + + (void) new wxRadioButton( this, wxID_ANY, "Disable", wxPoint(10,190) ); + + (void) new wxComboBox( this, wxID_ANY, "This", wxPoint(10,230), wxDefaultSize, 5, choices ); + + (void) new wxRadioBox( this, wxID_ANY, "This", wxPoint(10,310), wxDefaultSize, 5, choices, 2, wxRA_SPECIFY_COLS ); + + (void) new wxRadioBox( this, wxID_ANY, "This", wxPoint(10,440), wxDefaultSize, 5, choices, 2, wxRA_SPECIFY_ROWS ); + + wxListCtrl *m_listCtrl = new wxListCtrl( + this, wxID_ANY, 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, wxID_ANY, wxPoint(260,280), wxSize(120,120), 5, choices, wxLB_ALWAYS_SB ); + +#endif + + wxPanel *test = new wxPanel( this, wxID_ANY, wxPoint(10, 110), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL ); + test->SetBackgroundColour( wxT("WHEAT") ); + +#if 0 + + wxButton *test2 = new wxButton( test, wxID_ANY, "Hallo", wxPoint(10,10) ); + + test = new wxPanel( this, wxID_ANY, wxPoint(160, 530), wxSize(130,120), wxSUNKEN_BORDER | wxTAB_TRAVERSAL ); + test->SetBackgroundColour( wxT("WHEAT") ); + test->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) ); + test2 = new wxButton( test, wxID_ANY, "Hallo", wxPoint(10,10) ); + test2->SetCursor( wxCursor( wxCURSOR_PENCIL ) ); + + test = new wxPanel( this, wxID_ANY, wxPoint(310, 530), wxSize(130,120), wxRAISED_BORDER | wxTAB_TRAVERSAL ); + test->SetBackgroundColour( wxT("WHEAT") ); + test->SetCursor( wxCursor( wxCURSOR_PENCIL ) ); + test2 = new wxButton( test, wxID_ANY, "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) ) { - return; + wxPaintDC dc( this ); + PrepareDC( dc ); - wxPaintDC dc( this ); - PrepareDC( dc ); + dc.DrawText( _T("Press mouse button to test calculations!"), 160, 50 ); - dc.DrawText( "Some text", 10, 10 ); - - dc.DrawRectangle( 50, 30, 200, 200 ); + dc.DrawText( _T("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, wxT("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 &WXUNUSED(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( wxDefaultCoord, 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 ); +} + +// ---------------------------------------------------------------------------- +// MyAutoScrollWindow +// ---------------------------------------------------------------------------- + +const long ID_RESIZEBUTTON = wxNewId(); +const wxSize SMALL_BUTTON( 100, 50 ); +const wxSize LARGE_BUTTON( 300, 100 ); + +BEGIN_EVENT_TABLE( MyAutoScrollWindow, wxScrolledWindow) + EVT_BUTTON( ID_RESIZEBUTTON, MyAutoScrollWindow::OnResizeClick) +END_EVENT_TABLE() + +MyAutoScrollWindow::MyAutoScrollWindow( wxWindow *parent ) + : wxScrolledWindow( parent ) +{ + SetBackgroundColour( wxT("GREEN") ); + + // Set the rate we'd like for scrolling. + + SetScrollRate( 5, 5 ); + + // Populate a sizer with a 'resizing' button and some + // other static decoration + + wxFlexGridSizer *innersizer = new wxFlexGridSizer( 2, 2 ); + + m_button = new wxButton( this, + ID_RESIZEBUTTON, + _T("Press me"), + wxDefaultPosition, + SMALL_BUTTON ); + + // We need to do this here, because wxADJUST_MINSIZE below + // will cause the initial size to be ignored for Best/Min size. + // It would be nice to fix the sizers to handle this a little + // more cleanly. + + m_button->SetSizeHints( SMALL_BUTTON.GetWidth(), SMALL_BUTTON.GetHeight() ); + + innersizer->Add( m_button, + 0, + wxALIGN_CENTER | wxALL | wxADJUST_MINSIZE, + 20 ); + + innersizer->Add( new wxStaticText( this, wxID_ANY, _T("This is just") ), + 0, + wxALIGN_CENTER ); + + innersizer->Add( new wxStaticText( this, wxID_ANY, _T("some decoration") ), + 0, + wxALIGN_CENTER ); + + innersizer->Add( new wxStaticText( this, wxID_ANY, _T("for you to scroll...") ), + 0, + wxALIGN_CENTER ); + + // Then use the sizer to set the scrolled region size. + + SetSizer( innersizer ); +} + +void MyAutoScrollWindow::OnResizeClick( wxCommandEvent &WXUNUSED( event ) ) +{ + // Arbitrarily resize the button to change the minimum size of + // the (scrolled) sizer. + + if( m_button->GetSize() == SMALL_BUTTON ) + m_button->SetSizeHints( LARGE_BUTTON.GetWidth(), LARGE_BUTTON.GetHeight() ); + else + m_button->SetSizeHints( SMALL_BUTTON.GetWidth(), SMALL_BUTTON.GetHeight() ); + + // Force update layout and scrollbars, since nothing we do here + // necessarily generates a size event which would do it for us. + + FitInside(); +} + +// ---------------------------------------------------------------------------- // MyFrame +// ---------------------------------------------------------------------------- -const int ID_QUIT = 108; -const int ID_ABOUT = 109; +const long ID_QUIT = wxNewId(); +const long ID_ABOUT = wxNewId(); +const long ID_DELETE_ALL = wxNewId(); +const long ID_INSERT_NEW = wxNewId(); 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(470,360) ) + : wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxScrolledWindow sample"), + wxPoint(20,20), wxSize(800,500) ) { -/* - wxMenu *file_menu = new wxMenu(); - file_menu->Append( ID_ABOUT, "&About.."); - file_menu->Append( ID_QUIT, "E&xit\tAlt-X"); + wxMenu *file_menu = new wxMenu(); + file_menu->Append( ID_DELETE_ALL, _T("Delete all")); + file_menu->Append( ID_INSERT_NEW, _T("Insert new")); + file_menu->Append( ID_ABOUT, _T("&About..")); + file_menu->Append( ID_QUIT, _T("E&xit\tAlt-X")); + + wxMenuBar *menu_bar = new wxMenuBar(); + menu_bar->Append(file_menu, _T("&File")); + + SetMenuBar( menu_bar ); + +#if wxUSE_STATUSBAR + CreateStatusBar(2); + int widths[] = { -1, 100 }; + SetStatusWidths( 2, widths ); +#endif // wxUSE_STATUSBAR + + wxBoxSizer *topsizer = new wxBoxSizer( wxHORIZONTAL ); + // subsizer splits topsizer down the middle + wxBoxSizer *subsizer = new wxBoxSizer( wxVERTICAL ); + + // Setting an explicit size here is superfluous, it will be overridden + // by the sizer in any case. + m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(100,100) ); - wxMenuBar *menu_bar = new wxMenuBar(); - menu_bar->Append(file_menu, "&File"); + // This is done with ScrollRate/VirtualSize in MyCanvas ctor now, + // both should produce identical results. + //m_canvas->SetScrollbars( 10, 10, 50, 100 ); + + subsizer->Add( m_canvas, 1, wxEXPAND ); + subsizer->Add( new MyAutoScrollWindow( this ), 1, wxEXPAND ); - SetMenuBar( menu_bar ); + wxSizer *sizerBtm = new wxBoxSizer(wxHORIZONTAL); + sizerBtm->Add( new MyScrolledWindowDumb(this), 1, wxEXPAND ); + sizerBtm->Add( new MyScrolledWindowSmart(this), 1, wxEXPAND ); + subsizer->Add( sizerBtm, 1, wxEXPAND ); - CreateStatusBar(2); - int widths[] = { -1, 100 }; - SetStatusWidths( 2, widths ); + topsizer->Add( subsizer, 1, wxEXPAND ); + topsizer->Add( new MyAutoTimedScrollingWindow( this ), 1, wxEXPAND ); -*/ - m_canvas = new MyCanvas( this, -1, wxPoint(0,0), wxSize(10,10) ); - m_canvas->SetScrollbars( 10, 10, 50, 100 ); + SetSizer( topsizer ); +} + +void MyFrame::OnDeleteAll( wxCommandEvent &WXUNUSED(event) ) +{ + m_canvas->DestroyChildren(); +} + +void MyFrame::OnInsertNew( wxCommandEvent &WXUNUSED(event) ) +{ + (void)new wxButton( m_canvas, wxID_ANY, _T("Hello"), wxPoint(100,100) ); } void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) { - Close( TRUE ); + Close( true ); } void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) { - (void)wxMessageBox( "wxScroll demo\n" - "Robert Roebling (c) 1998", - "About wxScroll Demo", wxICON_INFORMATION | wxOK ); + (void)wxMessageBox( _T("wxScroll demo\n") + _T("Robert Roebling (c) 1998\n") + _T("Autoscrolling examples\n") + _T("Ron Lee (c) 2002\n") + _T("Auto-timed-scrolling example\n") + _T("Matt Gregory (c) 2003\n"), + _T("About wxScroll Demo"), + wxICON_INFORMATION | wxOK ); } //----------------------------------------------------------------------------- @@ -171,8 +569,489 @@ void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) ) bool MyApp::OnInit() { wxFrame *frame = new MyFrame(); - frame->Show( TRUE ); + frame->Show( true ); + + return true; +} + +// ---------------------------------------------------------------------------- +// MyScrolledWindowXXX +// ---------------------------------------------------------------------------- + +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); - return TRUE; + 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; + } +} + +// ---------------------------------------------------------------------------- +// MyAutoTimedScrollingWindow +// ---------------------------------------------------------------------------- + +BEGIN_EVENT_TABLE(MyAutoTimedScrollingWindow, wxScrolledWindow) + EVT_LEFT_DOWN(MyAutoTimedScrollingWindow::OnMouseLeftDown) + EVT_LEFT_UP(MyAutoTimedScrollingWindow::OnMouseLeftUp) + EVT_MOTION(MyAutoTimedScrollingWindow::OnMouseMove) + EVT_SCROLLWIN(MyAutoTimedScrollingWindow::OnScroll) +END_EVENT_TABLE() + +MyAutoTimedScrollingWindow::MyAutoTimedScrollingWindow(wxWindow* parent) + : wxScrolledWindow(parent, -1, wxDefaultPosition, wxDefaultSize + //, wxSUNKEN_BORDER) // can't seem to do it this way + , wxVSCROLL | wxHSCROLL | wxSUNKEN_BORDER) + , m_selStart(-1, -1), m_cursor(-1, -1) + , m_font(9, wxFONTFAMILY_TELETYPE, wxFONTSTYLE_NORMAL + , wxFONTWEIGHT_NORMAL) +{ + wxClientDC dc(this); + // query dc for text size + dc.SetFont(m_font); + dc.GetTextExtent(wxString(_T("A")), &m_fontW, &m_fontH); + // set up the virtual window + SetScrollbars(m_fontW, m_fontH, sm_lineLen, sm_lineCnt); +} + +wxRect MyAutoTimedScrollingWindow::DeviceCoordsToGraphicalChars + (wxRect updRect) const +{ + wxPoint pos(updRect.GetPosition()); + pos = DeviceCoordsToGraphicalChars(pos); + updRect.x = pos.x; + updRect.y = pos.y; + updRect.width /= m_fontW; + updRect.height /= m_fontH; + // the *CoordsToGraphicalChars() funcs round down to upper-left corner, + // so an off-by-one correction is needed + ++updRect.width; // kludge + ++updRect.height; // kludge + return updRect; +} + +wxPoint MyAutoTimedScrollingWindow::DeviceCoordsToGraphicalChars + (wxPoint pos) const +{ + pos.x /= m_fontW; + pos.y /= m_fontH; + int vX, vY; + GetViewStart(&vX, &vY); + pos.x += vX; + pos.y += vY; + return pos; +} + +wxPoint MyAutoTimedScrollingWindow::GraphicalCharToDeviceCoords + (wxPoint pos) const +{ + int vX, vY; + GetViewStart(&vX, &vY); + pos.x -= vX; + pos.y -= vY; + pos.x *= m_fontW; + pos.y *= m_fontH; + return pos; +} + +wxRect MyAutoTimedScrollingWindow::LogicalCoordsToGraphicalChars + (wxRect updRect) const +{ + wxPoint pos(updRect.GetPosition()); + pos = LogicalCoordsToGraphicalChars(pos); + updRect.x = pos.x; + updRect.y = pos.y; + updRect.width /= m_fontW; + updRect.height /= m_fontH; + // the *CoordsToGraphicalChars() funcs round down to upper-left corner, + // so an off-by-one correction is needed + ++updRect.width; // kludge + ++updRect.height; // kludge + return updRect; +} + +wxPoint MyAutoTimedScrollingWindow::LogicalCoordsToGraphicalChars + (wxPoint pos) const +{ + pos.x /= m_fontW; + pos.y /= m_fontH; + return pos; +} + +wxPoint MyAutoTimedScrollingWindow::GraphicalCharToLogicalCoords + (wxPoint pos) const +{ + pos.x *= m_fontW; + pos.y *= m_fontH; + return pos; +} + +void MyAutoTimedScrollingWindow::MyRefresh() +{ + static wxPoint lastSelStart(-1, -1), lastCursor(-1, -1); + // refresh last selected area (to deselect previously selected text) + wxRect lastUpdRect( + GraphicalCharToDeviceCoords(lastSelStart), + GraphicalCharToDeviceCoords(lastCursor) + ); + // off-by-one corrections, necessary because it's not possible to know + // when to round up until rect is normalized by lastUpdRect constructor + lastUpdRect.width += m_fontW; // kludge + lastUpdRect.height += m_fontH; // kludge + // refresh currently selected (to select previously unselected text) + wxRect updRect( + GraphicalCharToDeviceCoords(m_selStart), + GraphicalCharToDeviceCoords(m_cursor) + ); + // off-by-one corrections + updRect.width += m_fontW; // kludge + updRect.height += m_fontH; // kludge + // find necessary refresh areas + wxCoord rx = lastUpdRect.x; + wxCoord ry = lastUpdRect.y; + wxCoord rw = updRect.x - lastUpdRect.x; + wxCoord rh = lastUpdRect.height; + if (rw && rh) { + RefreshRect(DCNormalize(rx, ry, rw, rh)); + } + rx = updRect.x; + ry = updRect.y + updRect.height; + rw= updRect.width; + rh = (lastUpdRect.y + lastUpdRect.height) - (updRect.y + updRect.height); + if (rw && rh) { + RefreshRect(DCNormalize(rx, ry, rw, rh)); + } + rx = updRect.x + updRect.width; + ry = lastUpdRect.y; + rw = (lastUpdRect.x + lastUpdRect.width) - (updRect.x + updRect.width); + rh = lastUpdRect.height; + if (rw && rh) { + RefreshRect(DCNormalize(rx, ry, rw, rh)); + } + rx = updRect.x; + ry = lastUpdRect.y; + rw = updRect.width; + rh = updRect.y - lastUpdRect.y; + if (rw && rh) { + RefreshRect(DCNormalize(rx, ry, rw, rh)); + } + // update last + lastSelStart = m_selStart; + lastCursor = m_cursor; +} + +bool MyAutoTimedScrollingWindow::IsSelected(int chX, int chY) const +{ + if (IsInside(chX, m_selStart.x, m_cursor.x) + && IsInside(chY, m_selStart.y, m_cursor.y)) { + return TRUE; + } + return FALSE; +} + +bool MyAutoTimedScrollingWindow::IsInside(int k, int bound1, int bound2) +{ + if ((k >= bound1 && k <= bound2) || (k >= bound2 && k <= bound1)) { + return TRUE; + } + return FALSE; +} + +wxRect MyAutoTimedScrollingWindow::DCNormalize(wxCoord x, wxCoord y + , wxCoord w, wxCoord h) +{ + // this is needed to get rid of the graphical remnants from the selection + // I think it's because DrawRectangle() excludes a pixel in either direction + const int kludge = 1; + // make (x, y) the top-left corner + if (w < 0) { + w = -w + kludge; + x -= w; + } else { + x -= kludge; + w += kludge; + } + if (h < 0) { + h = -h + kludge; + y -= h; + } else { + y -= kludge; + h += kludge; + } + return wxRect(x, y, w, h); +} + +void MyAutoTimedScrollingWindow::OnDraw(wxDC& dc) +{ + dc.SetFont(m_font); + wxBrush normBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW) + , wxSOLID); + wxBrush selBrush(wxSystemSettings::GetColour(wxSYS_COLOUR_HIGHLIGHT) + , wxSOLID); + dc.SetPen(*wxTRANSPARENT_PEN); + // draw the characters + // 1. for each update region + for (wxRegionIterator upd(GetUpdateRegion()); upd; ++upd) { + wxRect updRect = upd.GetRect(); + wxRect updRectInGChars(DeviceCoordsToGraphicalChars(updRect)); + // 2. for each row of chars in the update region + for (int chY = updRectInGChars.y + ; chY <= updRectInGChars.y + updRectInGChars.height; ++chY) { + // 3. for each character in the row + for (int chX = updRectInGChars.x + ; chX <= updRectInGChars.x + updRectInGChars.width + ; ++chX) { + // 4. set up dc + if (IsSelected(chX, chY)) { + dc.SetBrush(selBrush); + dc.SetTextForeground( wxSystemSettings::GetColour + (wxSYS_COLOUR_HIGHLIGHTTEXT)); + } else { + dc.SetBrush(normBrush); + dc.SetTextForeground( wxSystemSettings::GetColour + (wxSYS_COLOUR_WINDOWTEXT)); + } + // 5. find position info + wxPoint charPos = GraphicalCharToLogicalCoords(wxPoint + (chX, chY)); + // 6. draw! + dc.DrawRectangle(charPos.x, charPos.y, m_fontW, m_fontH); + if (chY < sm_lineCnt && chX < sm_lineLen) { + int charIndex = chY * sm_lineLen + chX; + dc.DrawText(wxString(sm_testData[charIndex]) + , charPos.x, charPos.y); + } + } + } + } +} + +void MyAutoTimedScrollingWindow::OnMouseLeftDown(wxMouseEvent& event) +{ + // initial press of mouse button sets the beginning of the selection + m_selStart = DeviceCoordsToGraphicalChars(event.GetPosition()); + // set the cursor to the same position + m_cursor = m_selStart; + // draw/erase selection + MyRefresh(); +} + +void MyAutoTimedScrollingWindow::OnMouseLeftUp(wxMouseEvent& WXUNUSED(event)) +{ + // this test is necessary + if (HasCapture()) { + // uncapture mouse + ReleaseMouse(); + } +} + +void MyAutoTimedScrollingWindow::OnMouseMove(wxMouseEvent& event) +{ + // if user is dragging + if (event.Dragging() && event.LeftIsDown()) { + // set the new cursor position + m_cursor = DeviceCoordsToGraphicalChars(event.GetPosition()); + // draw/erase selection + MyRefresh(); + // capture mouse to activate auto-scrolling + if (!HasCapture()) { + CaptureMouse(); + } + } +} + +void MyAutoTimedScrollingWindow::OnScroll(wxScrollWinEvent& event) +{ + // need to move the cursor when autoscrolling + // FIXME: the cursor also moves when the scrollbar arrows are clicked + if (HasCapture()) { + if (event.GetOrientation() == wxHORIZONTAL) { + if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP) { + --m_cursor.x; + } else if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN) { + ++m_cursor.x; + } + } else if (event.GetOrientation() == wxVERTICAL) { + if (event.GetEventType() == wxEVT_SCROLLWIN_LINEUP) { + --m_cursor.y; + } else if (event.GetEventType() == wxEVT_SCROLLWIN_LINEDOWN) { + ++m_cursor.y; + } + } + } + MyRefresh(); + event.Skip(); +} + +const int MyAutoTimedScrollingWindow::sm_lineCnt = 125; +const int MyAutoTimedScrollingWindow::sm_lineLen = 79; +const wxChar* MyAutoTimedScrollingWindow::sm_testData = _T("\ +162 Cult of the genius out of vanity.— Because we think well of ourselves, but \ +nonetheless never suppose ourselves capable of producing a painting like one of\ +Raphael's or a dramatic scene like one of Shakespeare's, we convince ourselves \ +that the capacity to do so is quite extraordinarily marvelous, a wholly \ +uncommon accident, or, if we are still religiously inclined, a mercy from on \ +high. Thus our vanity, our self-love, promotes the cult of the genius: for only\ +if we think of him as being very remote from us, as a miraculum, does he not \ +aggrieve us (even Goethe, who was without envy, called Shakespeare his star of \ +the most distant heights [\"William! Stern der schönsten Ferne\": from Goethe's, \ +\"Between Two Worlds\"]; in regard to which one might recall the lines: \"the \ +stars, these we do not desire\" [from Goethe's, \"Comfort in Tears\"]). But, aside\ +from these suggestions of our vanity, the activity of the genius seems in no \ +way fundamentally different from the activity of the inventor of machines, the \ +scholar of astronomy or history, the master of tactics. All these activities \ +are explicable if one pictures to oneself people whose thinking is active in \ +one direction, who employ everything as material, who always zealously observe \ +their own inner life and that of others, who perceive everywhere models and \ +incentives, who never tire of combining together the means available to them. \ +Genius too does nothing except learn first how to lay bricks then how to build,\ +except continually seek for material and continually form itself around it. \ +Every activity of man is amazingly complicated, not only that of the genius: \ +but none is a \"miracle.\"— Whence, then, the belief that genius exists only in \ +the artist, orator and philosopher? that only they have \"intuition\"? (Whereby \ +they are supposed to possess a kind of miraculous eyeglass with which they can \ +see directly into \"the essence of the thing\"!) It is clear that people speak of\ +") _T("\ +genius only where the effects of the great intellect are most pleasant to them \ +and where they have no desire to feel envious. To call someone \"divine\" means: \ +\"here there is no need for us to compete.\" Then, everything finished and \ +complete is regarded with admiration, everything still becoming is undervalued.\ +But no one can see in the work of the artist how it has become; that is its \ +advantage, for wherever one can see the act of becoming one grows somewhat \ +cool. The finished and perfect art of representation repulses all thinking as \ +to how it has become; it tyrannizes as present completeness and perfection. \ +That is why the masters of the art of representation count above all as gifted \ +with genius and why men of science do not. In reality, this evaluation of the \ +former and undervaluation of the latter is only a piece of childishness in the \ +realm of reason. \ + \ + \ +163 The serious workman.— Do not talk about giftedness, inborn talents! One can\ +name great men of all kinds who were very little gifted. The acquired \ +greatness, became \"geniuses\" (as we put it), through qualities the lack of \ +which no one who knew what they were would boast of: they all possessed that \ +seriousness of the efficient workman which first learns to construct the parts \ +properly before it ventures to fashion a great whole; they allowed themselves \ +time for it, because they took more pleasure in making the little, secondary \ +things well than in the effect of a dazzling whole. the recipe for becoming a \ +good novelist, for example, is easy to give, but to carry it out presupposes \ +qualities one is accustomed to overlook when one says \"I do not have enough \ +talent.\" One has only to make a hundred or so sketches for novels, none longer \ +") _T("\ +than two pages but of such distinctness that every word in them is necessary; \ +one should write down anecdotes each day until one has learned how to give them\ +the most pregnant and effective form; one should be tireless in collecting and \ +describing human types and characters; one should above all relate things to \ +others and listen to others relate, keeping one's eyes and ears open for the \ +effect produced on those present, one should travel like a landscape painter or\ +costume designer; one should excerpt for oneself out of the individual sciences\ +everything that will produce an artistic effect when it is well described, one \ +should, finally, reflect on the motives of human actions, disdain no signpost \ +to instruction about them and be a collector of these things by day and night. \ +One should continue in this many-sided exercise some ten years: what is then \ +created in the workshop, however, will be fit to go out into the world.— What, \ +however, do most people do? They begin, not with the parts, but with the whole.\ +Perhaps they chance to strike a right note, excite attention and from then on \ +strike worse and worse notes, for good, natural reasons.— Sometimes, when the \ +character and intellect needed to formulate such a life-plan are lacking, fate \ +and need take their place and lead the future master step by step through all \ +the stipulations of his trade. \ + \ + \ +164 Peril and profit in the cult of the genius.— The belief in great, superior,\ +fruitful spirits is not necessarily, yet nonetheless is very frequently \ +associated with that religious or semi-religious superstition that these \ +spirits are of supra-human origin and possess certain miraculous abilities by \ +virtue of which they acquire their knowledge by quite other means than the rest\ +") _T("\ +of mankind. One ascribes to them, it seems, a direct view of the nature of the \ +world, as it were a hole in the cloak of appearance, and believes that, by \ +virtue of this miraculous seer's vision, they are able to communicate something\ +conclusive and decisive about man and the world without the toil and \ +rigorousness required by science. As long as there continue to be those who \ +believe in the miraculous in the domain of knowledge one can perhaps concede \ +that these people themselves derive some benefit from their belief, inasmuch as\ +through their unconditional subjection to the great spirits they create for \ +their own spirit during its time of development the finest form of discipline \ +and schooling. On the other hand, it is at least questionable whether the \ +superstitious belief in genius, in its privileges and special abilities, is of \ +benefit to the genius himself if it takes root in him. It is in any event a \ +dangerous sign when a man is assailed by awe of himself, whether it be the \ +celebrated Caesar's awe of Caesar or the awe of one's own genius now under \ +consideration; when the sacrificial incense which is properly rendered only to \ +a god penetrates the brain of the genius, so that his head begins to swim and \ +he comes to regard himself as something supra-human. The consequences that \ +slowly result are: the feeling of irresponsibility, of exceptional rights, the \ +belief that he confers a favor by his mere presence, insane rage when anyone \ +attempts even to compare him with others, let alone to rate him beneath them, \ +or to draw attention to lapses in his work. Because he ceases to practice \ +criticism of himself, at last one pinion after the other falls out of his \ +plumage: that superstitious eats at the roots of his powers and perhaps even \ +turns him into a hypocrite after his powers have fled from him. For the great \ +spirits themselves it is therefore probably more beneficial if they acquire an \ +") _T("\ +insight into the nature and origin of their powers, if they grasp, that is to \ +say, what purely human qualities have come together in them and what fortunate \ +circumstances attended them: in the first place undiminished energy, resolute \ +application to individual goals, great personal courage, then the good fortune \ +to receive an upbringing which offered in the early years the finest teachers, \ +models and methods. To be sure, when their goal is the production of the \ +greatest possible effect, unclarity with regard to oneself and that \ +semi-insanity superadded to it has always achieved much; for what has been \ +admired and envied at all times has been that power in them by virtue of which \ +they render men will-less and sweep them away into the delusion that the \ +leaders they are following are supra-natural. Indeed, it elevates and inspires \ +men to believe that someone is in possession of supra-natural powers: to this \ +extent Plato was right to say [Plato: Phaedrus, 244a] that madness has brought \ +the greatest of blessings upon mankind.— In rare individual cases this portion \ +of madness may, indeed, actually have been the means by which such a nature, \ +excessive in all directions, was held firmly together: in the life of \ +individuals, too, illusions that are in themselves poisons often play the role \ +of healers; yet, in the end, in the case of every \"genius\" who believes in his \ +own divinity the poison shows itself to the same degree as his \"genius\" grows \ +old: one may recall, for example, the case of Napoleon, whose nature certainly \ +grew into the mighty unity that sets him apart from all men of modern times \ +precisely through his belief in himself and his star and through the contempt \ +for men that flowed from it; until in the end, however, this same belief went \ +over into an almost insane fatalism, robbed him of his acuteness and swiftness \ +of perception, and became the cause of his destruction. \ +"); +