b62ca03d6f
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27585 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
568 lines
16 KiB
C++
568 lines
16 KiB
C++
/*
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* Program: scroll
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*
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* Author: Robert Roebling
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*
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* Copyright: (C) 1998, Robert Roebling
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* 2002, Ron Lee
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*
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*/
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// For compilers that support precompilation, includes "wx/wx.h".
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#include "wx/wxprec.h"
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#ifdef __BORLANDC__
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#pragma hdrstop
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#endif
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#ifndef WX_PRECOMP
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#include "wx/wx.h"
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#endif
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#include "wx/image.h"
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#include "wx/listctrl.h"
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#include "wx/sizer.h"
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#include "wx/log.h"
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// derived classes
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class MyFrame;
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class MyApp;
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// MyCanvas
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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( 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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void OnQueryPosition( wxCommandEvent &event );
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void OnAddButton( wxCommandEvent &event );
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void OnDeleteButton( wxCommandEvent &event );
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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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wxButton *m_button;
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DECLARE_DYNAMIC_CLASS(MyCanvas)
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DECLARE_EVENT_TABLE()
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};
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// ----------------------------------------------------------------------------
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// Autoscrolling example.
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// ----------------------------------------------------------------------------
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// this class uses the 'virtual' size attribute along with an internal
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// sizer to automatically set up scrollbars as needed
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class MyAutoScrollWindow : public wxScrolledWindow
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{
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private:
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wxButton *m_button;
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public:
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MyAutoScrollWindow( wxWindow *parent );
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void OnResizeClick( wxCommandEvent &WXUNUSED( event ) );
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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)
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: wxScrolledWindow(parent)
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, m_nLines( 100 )
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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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}
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protected:
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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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// and sets the scrollbar extent directly.
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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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{
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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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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 and sets the scroll rate and virtual size to affect the
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// scrollbars.
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//
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// Note that this class should produce identical results to the one above.
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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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{
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// no horz scrolling
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SetScrollRate( 0, m_hLine );
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SetVirtualSize( -1, ( m_nLines + 1 ) * m_hLine );
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}
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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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public:
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MyFrame();
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void OnAbout( wxCommandEvent &event );
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void OnQuit( wxCommandEvent &event );
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void OnDeleteAll( wxCommandEvent &event );
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void OnInsertNew( wxCommandEvent &event );
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MyCanvas *m_canvas;
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wxTextCtrl *m_log;
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DECLARE_DYNAMIC_CLASS(MyFrame)
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DECLARE_EVENT_TABLE()
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};
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// MyApp
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class MyApp: public wxApp
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{
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public:
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virtual bool OnInit();
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};
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// main program
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IMPLEMENT_APP(MyApp)
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// ids
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const long ID_ADDBUTTON = wxNewId();
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const long ID_DELBUTTON = wxNewId();
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const long ID_MOVEBUTTON = wxNewId();
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const long ID_SCROLLWIN = wxNewId();
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const long ID_QUERYPOS = wxNewId();
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const long ID_NEWBUTTON = wxNewId();
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// MyCanvas
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IMPLEMENT_DYNAMIC_CLASS(MyCanvas, wxScrolledWindow)
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BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
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EVT_PAINT( MyCanvas::OnPaint)
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EVT_MOUSE_EVENTS( MyCanvas::OnMouseDown)
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EVT_BUTTON( ID_QUERYPOS, MyCanvas::OnQueryPosition)
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EVT_BUTTON( ID_ADDBUTTON, MyCanvas::OnAddButton)
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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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END_EVENT_TABLE()
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MyCanvas::MyCanvas( wxWindow *parent, wxWindowID id,
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const wxPoint &pos, const wxSize &size )
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: wxScrolledWindow( parent, id, pos, size, wxSUNKEN_BORDER | wxTAB_TRAVERSAL, _T("test canvas") )
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{
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SetScrollRate( 10, 10 );
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SetVirtualSize( 500, 1000 );
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(void) new wxButton( this, ID_ADDBUTTON, _T("add button"), wxPoint(10,10) );
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(void) new wxButton( this, ID_DELBUTTON, _T("del button"), wxPoint(10,40) );
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(void) new wxButton( this, ID_MOVEBUTTON, _T("move button"), wxPoint(150,10) );
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(void) new wxButton( this, ID_SCROLLWIN, _T("scroll win"), wxPoint(250,10) );
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#if 0
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wxString choices[] =
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{
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"This",
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"is one of my",
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"really",
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"wonderful",
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"examples."
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};
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m_button = new wxButton( this, ID_QUERYPOS, "Query position", wxPoint(10,110) );
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(void) new wxTextCtrl( this, wxID_ANY, "wxTextCtrl", wxPoint(10,150), wxSize(80,wxDefaultSize.y) );
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(void) new wxRadioButton( this, wxID_ANY, "Disable", wxPoint(10,190) );
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(void) new wxComboBox( this, wxID_ANY, "This", wxPoint(10,230), wxDefaultSize, 5, choices );
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(void) new wxRadioBox( this, wxID_ANY, "This", wxPoint(10,310), wxDefaultSize, 5, choices, 2, wxRA_SPECIFY_COLS );
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(void) new wxRadioBox( this, wxID_ANY, "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, wxID_ANY, 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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for ( int i=0; i < 30; i++)
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{
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char buf[20];
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sprintf(buf, "Item %d", i);
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m_listCtrl->InsertItem(i, buf);
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}
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m_listCtrl->SetItemState( 3, wxLIST_STATE_SELECTED, wxLIST_STATE_SELECTED );
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(void) new wxListBox( this, wxID_ANY, wxPoint(260,280), wxSize(120,120), 5, choices, wxLB_ALWAYS_SB );
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#endif
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wxPanel *test = new wxPanel( this, wxID_ANY, wxPoint(10, 110), wxSize(130,50), wxSIMPLE_BORDER | wxTAB_TRAVERSAL );
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test->SetBackgroundColour( wxT("WHEAT") );
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#if 0
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wxButton *test2 = new wxButton( test, wxID_ANY, "Hallo", wxPoint(10,10) );
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test = new wxPanel( this, wxID_ANY, wxPoint(160, 530), wxSize(130,120), wxSUNKEN_BORDER | wxTAB_TRAVERSAL );
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test->SetBackgroundColour( wxT("WHEAT") );
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test->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
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test2 = new wxButton( test, wxID_ANY, "Hallo", wxPoint(10,10) );
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test2->SetCursor( wxCursor( wxCURSOR_PENCIL ) );
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test = new wxPanel( this, wxID_ANY, wxPoint(310, 530), wxSize(130,120), wxRAISED_BORDER | wxTAB_TRAVERSAL );
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test->SetBackgroundColour( wxT("WHEAT") );
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test->SetCursor( wxCursor( wxCURSOR_PENCIL ) );
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test2 = new wxButton( test, wxID_ANY, "Hallo", wxPoint(10,10) );
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test2->SetCursor( wxCursor( wxCURSOR_NO_ENTRY ) );
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#endif
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SetBackgroundColour( wxT("BLUE") );
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SetCursor( wxCursor( wxCURSOR_IBEAM ) );
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}
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MyCanvas::~MyCanvas()
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{
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}
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void MyCanvas::OnMouseDown( wxMouseEvent &event )
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{
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if (event.LeftDown())
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{
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wxPoint pt( event.GetPosition() );
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int x,y;
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CalcUnscrolledPosition( pt.x, pt.y, &x, &y );
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wxLogMessage( wxT("Mouse down event at: %d %d, scrolled: %d %d"), pt.x, pt.y, x, y );
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if ( !event.LeftIsDown() )
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wxLogMessage( wxT("Error: LeftIsDown() should be true if for LeftDown()") );
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}
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}
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void MyCanvas::OnPaint( wxPaintEvent &WXUNUSED(event) )
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{
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wxPaintDC dc( this );
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PrepareDC( dc );
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dc.DrawText( _T("Press mouse button to test calculations!"), 160, 50 );
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dc.DrawText( _T("Some text"), 140, 140 );
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dc.DrawRectangle( 100, 160, 200, 200 );
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}
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void MyCanvas::OnQueryPosition( wxCommandEvent &WXUNUSED(event) )
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{
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wxPoint pt( m_button->GetPosition() );
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wxLogMessage( wxT("Position of \"Query position\" is %d %d"), pt.x, pt.y );
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pt = ClientToScreen( pt );
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wxLogMessage( wxT("Position of \"Query position\" on screen is %d %d"), pt.x, pt.y );
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}
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void MyCanvas::OnAddButton( wxCommandEvent &WXUNUSED(event) )
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{
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wxLogMessage( wxT("Inserting button at position 10,70...") );
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wxButton *button = new wxButton( this, ID_NEWBUTTON, wxT("new button"), wxPoint(10,70), wxSize(80,25) );
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wxPoint pt( button->GetPosition() );
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wxLogMessage( wxT("-> Position after inserting %d %d"), pt.x, pt.y );
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}
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void MyCanvas::OnDeleteButton( wxCommandEvent &WXUNUSED(event) )
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{
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wxLogMessage( wxT("Deleting button inserted with \"Add button\"...") );
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wxWindow *win = FindWindow( ID_NEWBUTTON );
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if (win)
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win->Destroy();
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else
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wxLogMessage( wxT("-> No window with id = ID_NEWBUTTON found.") );
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}
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void MyCanvas::OnMoveButton( wxCommandEvent &event )
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{
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wxLogMessage( wxT("Moving button 10 pixels downward..") );
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wxWindow *win = FindWindow( event.GetId() );
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wxPoint pt( win->GetPosition() );
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wxLogMessage( wxT("-> Position before move is %d %d"), pt.x, pt.y );
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win->Move( wxDefaultPosition.x, pt.y + 10 );
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pt = win->GetPosition();
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wxLogMessage( wxT("-> Position after move is %d %d"), pt.x, pt.y );
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}
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void MyCanvas::OnScrollWin( wxCommandEvent &WXUNUSED(event) )
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{
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wxLogMessage( wxT("Scrolling 2 units up.\nThe white square and the controls should move equally!") );
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int x,y;
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GetViewStart( &x, &y );
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Scroll( -1, y+2 );
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}
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// MyAutoScrollWindow
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const long ID_RESIZEBUTTON = wxNewId();
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const wxSize SMALL_BUTTON( 100, 50 );
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const wxSize LARGE_BUTTON( 300, 100 );
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BEGIN_EVENT_TABLE( MyAutoScrollWindow, wxScrolledWindow)
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EVT_BUTTON( ID_RESIZEBUTTON, MyAutoScrollWindow::OnResizeClick)
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END_EVENT_TABLE()
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MyAutoScrollWindow::MyAutoScrollWindow( wxWindow *parent )
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: wxScrolledWindow( parent )
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{
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SetBackgroundColour( wxT("GREEN") );
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// Set the rate we'd like for scrolling.
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SetScrollRate( 5, 5 );
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// Populate a sizer with a 'resizing' button and some
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// other static decoration
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wxFlexGridSizer *innersizer = new wxFlexGridSizer( 2, 2 );
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m_button = new wxButton( this,
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ID_RESIZEBUTTON,
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_T("Press me"),
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wxDefaultPosition,
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SMALL_BUTTON );
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// We need to do this here, because wxADJUST_MINSIZE below
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// will cause the initial size to be ignored for Best/Min size.
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// It would be nice to fix the sizers to handle this a little
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// more cleanly.
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m_button->SetSizeHints( SMALL_BUTTON.GetWidth(), SMALL_BUTTON.GetHeight() );
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innersizer->Add( m_button,
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0,
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wxALIGN_CENTER | wxALL | wxADJUST_MINSIZE,
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20 );
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innersizer->Add( new wxStaticText( this, wxID_ANY, _T("This is just") ),
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0,
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wxALIGN_CENTER );
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innersizer->Add( new wxStaticText( this, wxID_ANY, _T("some decoration") ),
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0,
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wxALIGN_CENTER );
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innersizer->Add( new wxStaticText( this, wxID_ANY, _T("for you to scroll...") ),
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0,
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wxALIGN_CENTER );
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// Then use the sizer to set the scrolled region size.
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SetSizer( innersizer );
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}
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void MyAutoScrollWindow::OnResizeClick( wxCommandEvent &WXUNUSED( event ) )
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{
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// Arbitrarily resize the button to change the minimum size of
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// the (scrolled) sizer.
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if( m_button->GetSize() == SMALL_BUTTON )
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m_button->SetSizeHints( LARGE_BUTTON.GetWidth(), LARGE_BUTTON.GetHeight() );
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else
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m_button->SetSizeHints( SMALL_BUTTON.GetWidth(), SMALL_BUTTON.GetHeight() );
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// Force update layout and scrollbars, since nothing we do here
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// necessarily generates a size event which would do it for us.
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FitInside();
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}
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// MyFrame
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const long ID_QUIT = wxNewId();
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const long ID_ABOUT = wxNewId();
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const long ID_DELETE_ALL = wxNewId();
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const long ID_INSERT_NEW = wxNewId();
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IMPLEMENT_DYNAMIC_CLASS( MyFrame, wxFrame )
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BEGIN_EVENT_TABLE(MyFrame,wxFrame)
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EVT_MENU (ID_DELETE_ALL, MyFrame::OnDeleteAll)
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EVT_MENU (ID_INSERT_NEW, MyFrame::OnInsertNew)
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EVT_MENU (ID_ABOUT, MyFrame::OnAbout)
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EVT_MENU (ID_QUIT, MyFrame::OnQuit)
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END_EVENT_TABLE()
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MyFrame::MyFrame()
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: wxFrame( (wxFrame *)NULL, wxID_ANY, _T("wxScrolledWindow sample"),
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wxPoint(20,20), wxSize(470,500) )
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{
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wxMenu *file_menu = new wxMenu();
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file_menu->Append( ID_DELETE_ALL, _T("Delete all"));
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file_menu->Append( ID_INSERT_NEW, _T("Insert new"));
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file_menu->Append( ID_ABOUT, _T("&About.."));
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file_menu->Append( ID_QUIT, _T("E&xit\tAlt-X"));
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wxMenuBar *menu_bar = new wxMenuBar();
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menu_bar->Append(file_menu, _T("&File"));
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SetMenuBar( menu_bar );
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CreateStatusBar(2);
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int widths[] = { -1, 100 };
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SetStatusWidths( 2, widths );
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wxBoxSizer *topsizer = new wxBoxSizer( wxVERTICAL );
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// Setting an explicit size here is superfluous, it will be overridden
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// by the sizer in any case.
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m_canvas = new MyCanvas( this, wxID_ANY, wxPoint(0,0), wxSize(100,100) );
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// This is done with ScrollRate/VirtualSize in MyCanvas ctor now,
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// both should produce identical results.
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//m_canvas->SetScrollbars( 10, 10, 50, 100 );
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topsizer->Add( m_canvas, 1, wxEXPAND );
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topsizer->Add( new MyAutoScrollWindow( this ), 1, 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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SetSizer( topsizer );
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}
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void MyFrame::OnDeleteAll( wxCommandEvent &WXUNUSED(event) )
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{
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m_canvas->DestroyChildren();
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}
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void MyFrame::OnInsertNew( wxCommandEvent &WXUNUSED(event) )
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{
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(void)new wxButton( m_canvas, wxID_ANY, _T("Hello"), wxPoint(100,100) );
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}
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void MyFrame::OnQuit( wxCommandEvent &WXUNUSED(event) )
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{
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Close( true );
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}
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void MyFrame::OnAbout( wxCommandEvent &WXUNUSED(event) )
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{
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(void)wxMessageBox( _T("wxScroll demo\n")
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_T("Robert Roebling (c) 1998\n")
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_T("Autoscrolling examples\n")
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_T("Ron Lee (c) 2002"),
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_T("About wxScroll Demo"),
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wxICON_INFORMATION | wxOK );
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}
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//-----------------------------------------------------------------------------
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// MyApp
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//-----------------------------------------------------------------------------
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bool MyApp::OnInit()
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{
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wxFrame *frame = new MyFrame();
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frame->Show( true );
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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 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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