X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4693b20c7500190c3cc8c02919c45436bf5efbc9..0d8b87ac8ae0ababd4c0d725142532f6d592fdb2:/samples/scroll/scroll.cpp?ds=sidebyside diff --git a/samples/scroll/scroll.cpp b/samples/scroll/scroll.cpp index 8216846041..0d43910962 100644 --- a/samples/scroll/scroll.cpp +++ b/samples/scroll/scroll.cpp @@ -4,6 +4,7 @@ * Author: Robert Roebling * * Copyright: (C) 1998, Robert Roebling + * 2002, Ron Lee * */ @@ -51,6 +52,30 @@ public: 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 // ---------------------------------------------------------------------------- @@ -59,17 +84,15 @@ public: class MyScrolledWindowBase : public wxScrolledWindow { public: - MyScrolledWindowBase(wxWindow *parent) : wxScrolledWindow(parent) + MyScrolledWindowBase(wxWindow *parent) + : wxScrolledWindow(parent) + , m_nLines( 100 ) { - m_nLines = 100; - - InitScrollbars(); + wxClientDC dc(this); + dc.GetTextExtent(_T("Line 17"), NULL, &m_hLine); } protected: - // set the scrollbar params - void InitScrollbars(); - // the height of one line on screen wxCoord m_hLine; @@ -78,24 +101,40 @@ protected: }; // 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) { } + 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 +// 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) { } + MyScrolledWindowSmart(wxWindow *parent) : MyScrolledWindowBase(parent) + { + // no horz scrolling + SetScrollRate( 0, m_hLine ); + SetVirtualSize( -1, ( m_nLines + 1 ) * m_hLine ); + } virtual void OnDraw(wxDC& dc); }; + // ---------------------------------------------------------------------------- // MyFrame // ---------------------------------------------------------------------------- @@ -131,13 +170,13 @@ IMPLEMENT_APP(MyApp) // ids -#define ID_ADDBUTTON 1 -#define ID_DELBUTTON 2 -#define ID_MOVEBUTTON 3 -#define ID_SCROLLWIN 4 -#define ID_QUERYPOS 5 +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(); -#define ID_NEWBUTTON 10 +const long ID_NEWBUTTON = wxNewId(); // MyCanvas @@ -145,7 +184,7 @@ IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow) BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow) EVT_PAINT( MyCanvas::OnPaint) - EVT_MOUSE_EVENTS( MyCanvas::OnMouseDown) + EVT_MOUSE_EVENTS( MyCanvas::OnMouseDown) EVT_BUTTON( ID_QUERYPOS, MyCanvas::OnQueryPosition) EVT_BUTTON( ID_ADDBUTTON, MyCanvas::OnAddButton) EVT_BUTTON( ID_DELBUTTON, MyCanvas::OnDeleteButton) @@ -155,12 +194,15 @@ 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" ) + : wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER | wxTAB_TRAVERSAL, _T("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) ); + 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 @@ -205,27 +247,27 @@ MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id, #endif wxPanel *test = new wxPanel( this, -1, wxPoint(10, 110), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL ); - test->SetBackgroundColour( "WHEAT" ); + 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( "WHEAT" ); + 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( "WHEAT" ); + 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( "BLUE" ); + SetBackgroundColour( wxT("BLUE") ); SetCursor( wxCursor( wxCURSOR_IBEAM ) ); } @@ -253,9 +295,9 @@ void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) ) wxPaintDC dc( this ); PrepareDC( dc ); - dc.DrawText( "Press mouse button to test calculations!", 160, 50 ); + dc.DrawText( _T("Press mouse button to test calculations!"), 160, 50 ); - dc.DrawText( "Some text", 140, 140 ); + dc.DrawText( _T("Some text"), 140, 140 ); dc.DrawRectangle( 100, 160, 200, 200 ); } @@ -271,12 +313,12 @@ void MyCanvas::OnQueryPosition( wxCommandEvent &WXUNUSED(event) ) 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) ); + 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 &event ) +void MyCanvas::OnDeleteButton( wxCommandEvent &WXUNUSED(event) ) { wxLogMessage( wxT("Deleting button inserted with \"Add button\"...") ); wxWindow *win = FindWindow( ID_NEWBUTTON ); @@ -305,12 +347,87 @@ void MyCanvas::OnScrollWin( wxCommandEvent &WXUNUSED(event) ) 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, -1, _T("This is just") ), + 0, + wxALIGN_CENTER ); + + innersizer->Add( new wxStaticText( this, -1, _T("some decoration") ), + 0, + wxALIGN_CENTER ); + + innersizer->Add( new wxStaticText( this, -1, _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 int ID_DELETE_ALL = 110; -const int ID_INSERT_NEW = 111; +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 ) @@ -322,17 +439,17 @@ BEGIN_EVENT_TABLE(MyFrame,wxFrame) END_EVENT_TABLE() MyFrame::MyFrame() - : wxFrame( (wxFrame *)NULL, -1, "wxScrolledWindow sample", + : wxFrame( (wxFrame *)NULL, -1, _T("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"); + 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, "&File"); + menu_bar->Append(file_menu, _T("&File")); SetMenuBar( menu_bar ); @@ -340,19 +457,24 @@ MyFrame::MyFrame() int widths[] = { -1, 100 }; SetStatusWidths( 2, widths ); + wxBoxSizer *topsizer = 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, -1, wxPoint(0,0), wxSize(100,100) ); - m_canvas->SetScrollbars( 10, 10, 50, 100 ); - wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL ); + // This is done with ScrollRate/VirtualSize in MyCanvas ctor now, + // both should produce identical results. + //m_canvas->SetScrollbars( 10, 10, 50, 100 ); topsizer->Add( m_canvas, 1, wxEXPAND ); + topsizer->Add( new MyAutoScrollWindow( this ), 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 ); } @@ -363,7 +485,7 @@ void MyFrame::OnDeleteAll( wxCommandEvent &WXUNUSED(event) ) void MyFrame::OnInsertNew( wxCommandEvent &WXUNUSED(event) ) { - (void)new wxButton( m_canvas, -1, "Hello", wxPoint(100,100) ); + (void)new wxButton( m_canvas, -1, _T("Hello"), wxPoint(100,100) ); } void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) @@ -373,9 +495,12 @@ void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) ) 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" + "Robert Roebling (c) 1998\n" + "Autoscrolling examples\n" + "Ron Lee (c) 2002"), + _T("About wxScroll Demo"), + wxICON_INFORMATION | wxOK ); } //----------------------------------------------------------------------------- @@ -394,15 +519,6 @@ bool MyApp::OnInit() // 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