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wxWidgets/samples/mdi/mdi.cpp
Chris Elliott 1583600031 fixes as per http://thread.gmane.org/gmane.comp.lib.wxwidgets.devel/92325 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@49114 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2007-10-10 07:44:34 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: mdi.cpp
// Purpose: MDI sample
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
// ===========================================================================
// declarations
// ===========================================================================
// ---------------------------------------------------------------------------
// headers
// ---------------------------------------------------------------------------
// For compilers that support precompilation, includes "wx/wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/wx.h"
#include "wx/mdi.h"
#endif
#include "wx/toolbar.h"
#if !defined(__WXMSW__)
#include "../sample.xpm"
#include "chart.xpm"
#endif
#include "bitmaps/new.xpm"
#include "bitmaps/open.xpm"
#include "bitmaps/save.xpm"
#include "bitmaps/copy.xpm"
#include "bitmaps/cut.xpm"
#include "bitmaps/paste.xpm"
#include "bitmaps/print.xpm"
#include "bitmaps/help.xpm"
#include "mdi.h"
IMPLEMENT_APP(MyApp)
// ---------------------------------------------------------------------------
// global variables
// ---------------------------------------------------------------------------
MyFrame *frame = (MyFrame *) NULL;
wxList my_children;
// For drawing lines in a canvas
static long xpos = -1;
static long ypos = -1;
static int gs_nFrames = 0;
// ---------------------------------------------------------------------------
// event tables
// ---------------------------------------------------------------------------
BEGIN_EVENT_TABLE(MyFrame, wxMDIParentFrame)
EVT_MENU(MDI_ABOUT, MyFrame::OnAbout)
EVT_MENU(MDI_NEW_WINDOW, MyFrame::OnNewWindow)
EVT_MENU(MDI_QUIT, MyFrame::OnQuit)
EVT_CLOSE(MyFrame::OnClose)
EVT_SIZE(MyFrame::OnSize)
END_EVENT_TABLE()
// Note that MDI_NEW_WINDOW and MDI_ABOUT commands get passed
// to the parent window for processing, so no need to
// duplicate event handlers here.
BEGIN_EVENT_TABLE(MyChild, wxMDIChildFrame)
EVT_MENU(MDI_CHILD_QUIT, MyChild::OnQuit)
EVT_MENU(MDI_REFRESH, MyChild::OnRefresh)
EVT_MENU(MDI_CHANGE_TITLE, MyChild::OnChangeTitle)
EVT_MENU(MDI_CHANGE_POSITION, MyChild::OnChangePosition)
EVT_MENU(MDI_CHANGE_SIZE, MyChild::OnChangeSize)
#if wxUSE_CLIPBOARD
EVT_MENU(wxID_PASTE, MyChild::OnPaste)
EVT_UPDATE_UI(wxID_PASTE, MyChild::OnUpdatePaste)
#endif // wxUSE_CLIPBOARD
EVT_SIZE(MyChild::OnSize)
EVT_MOVE(MyChild::OnMove)
EVT_CLOSE(MyChild::OnClose)
END_EVENT_TABLE()
BEGIN_EVENT_TABLE(MyCanvas, wxScrolledWindow)
EVT_MOUSE_EVENTS(MyCanvas::OnEvent)
END_EVENT_TABLE()
// ===========================================================================
// implementation
// ===========================================================================
// ---------------------------------------------------------------------------
// MyApp
// ---------------------------------------------------------------------------
// Initialise this in OnInit, not statically
bool MyApp::OnInit()
{
if ( !wxApp::OnInit() )
return false;
// Create the main frame window
frame = new MyFrame((wxFrame *)NULL, wxID_ANY, _T("MDI Demo"),
wxDefaultPosition, wxSize(500, 400),
wxDEFAULT_FRAME_STYLE | wxHSCROLL | wxVSCROLL);
#if 0
// Experimental: change the window menu
wxMenu* windowMenu = new wxMenu;
windowMenu->Append(5000, _T("My menu item!"));
frame->SetWindowMenu(windowMenu);
#endif
// Give it an icon
frame->SetIcon(wxICON(sample));
// Make a menubar
wxMenu *file_menu = new wxMenu;
file_menu->Append(MDI_NEW_WINDOW, _T("&New window\tCtrl-N"), _T("Create a new child window"));
file_menu->Append(MDI_QUIT, _T("&Exit\tAlt-X"), _T("Quit the program"));
wxMenu *help_menu = new wxMenu;
help_menu->Append(MDI_ABOUT, _T("&About\tF1"));
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, _T("&File"));
menu_bar->Append(help_menu, _T("&Help"));
// Associate the menu bar with the frame
frame->SetMenuBar(menu_bar);
#if wxUSE_STATUSBAR
frame->CreateStatusBar();
#endif // wxUSE_STATUSBAR
frame->Show(true);
SetTopWindow(frame);
return true;
}
// ---------------------------------------------------------------------------
// MyFrame
// ---------------------------------------------------------------------------
// Define my frame constructor
MyFrame::MyFrame(wxWindow *parent,
const wxWindowID id,
const wxString& title,
const wxPoint& pos,
const wxSize& size,
const long style)
: wxMDIParentFrame(parent, id, title, pos, size, style)
{
textWindow = new wxTextCtrl(this, wxID_ANY, _T("A help window"),
wxDefaultPosition, wxDefaultSize,
wxTE_MULTILINE | wxSUNKEN_BORDER);
#if wxUSE_TOOLBAR
CreateToolBar(wxNO_BORDER | wxTB_FLAT | wxTB_HORIZONTAL);
InitToolBar(GetToolBar());
#endif // wxUSE_TOOLBAR
#if wxUSE_ACCEL
// Accelerators
wxAcceleratorEntry entries[3];
entries[0].Set(wxACCEL_CTRL, (int) 'N', MDI_NEW_WINDOW);
entries[1].Set(wxACCEL_CTRL, (int) 'X', MDI_QUIT);
entries[2].Set(wxACCEL_CTRL, (int) 'A', MDI_ABOUT);
wxAcceleratorTable accel(3, entries);
SetAcceleratorTable(accel);
#endif // wxUSE_ACCEL
}
void MyFrame::OnClose(wxCloseEvent& event)
{
if ( event.CanVeto() && (gs_nFrames > 0) )
{
wxString msg;
msg.Printf(_T("%d windows still open, close anyhow?"), gs_nFrames);
if ( wxMessageBox(msg, _T("Please confirm"),
wxICON_QUESTION | wxYES_NO) != wxYES )
{
event.Veto();
return;
}
}
event.Skip();
}
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
Close();
}
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event) )
{
(void)wxMessageBox(_T("wxWidgets 2.0 MDI Demo\n")
_T("Author: Julian Smart (c) 1997\n")
_T("Usage: mdi.exe"), _T("About MDI Demo"));
}
void MyFrame::OnNewWindow(wxCommandEvent& WXUNUSED(event) )
{
// Make another frame, containing a canvas
MyChild *subframe = new MyChild(frame, _T("Canvas Frame"));
wxString title;
title.Printf(_T("Canvas Frame %d"), ++gs_nFrames);
subframe->SetTitle(title);
// Give it an icon
subframe->SetIcon(wxICON(chart));
#if wxUSE_MENUS
// Make a menubar
wxMenu *file_menu = new wxMenu;
file_menu->Append(MDI_NEW_WINDOW, _T("&New window"));
file_menu->Append(MDI_CHILD_QUIT, _T("&Close child"), _T("Close this window"));
file_menu->Append(MDI_QUIT, _T("&Exit"));
wxMenu *option_menu = new wxMenu;
option_menu->Append(MDI_REFRESH, _T("&Refresh picture"));
option_menu->Append(MDI_CHANGE_TITLE, _T("Change &title...\tCtrl-T"));
option_menu->AppendSeparator();
option_menu->Append(MDI_CHANGE_POSITION, _T("Move frame\tCtrl-M"));
option_menu->Append(MDI_CHANGE_SIZE, _T("Resize frame\tCtrl-S"));
#if wxUSE_CLIPBOARD
option_menu->AppendSeparator();
option_menu->Append(wxID_PASTE, _T("Copy text from clipboard\tCtrl-V"));
#endif // wxUSE_CLIPBOARD
wxMenu *help_menu = new wxMenu;
help_menu->Append(MDI_ABOUT, _T("&About"));
wxMenuBar *menu_bar = new wxMenuBar;
menu_bar->Append(file_menu, _T("&File"));
menu_bar->Append(option_menu, _T("&Child"));
menu_bar->Append(help_menu, _T("&Help"));
// Associate the menu bar with the frame
subframe->SetMenuBar(menu_bar);
#endif // wxUSE_MENUS
int width, height;
subframe->GetClientSize(&width, &height);
MyCanvas *canvas = new MyCanvas(subframe, wxPoint(0, 0), wxSize(width, height));
canvas->SetCursor(wxCursor(wxCURSOR_PENCIL));
subframe->canvas = canvas;
// Give it scrollbars
canvas->SetScrollbars(20, 20, 50, 50);
subframe->Show(true);
}
void MyFrame::OnSize(wxSizeEvent&
#ifdef __WXUNIVERSAL__
event
#else
WXUNUSED(event)
#endif
)
{
int w, h;
GetClientSize(&w, &h);
textWindow->SetSize(0, 0, 200, h);
GetClientWindow()->SetSize(200, 0, w - 200, h);
// FIXME: On wxX11, we need the MDI frame to process this
// event, but on other platforms this should not
// be done.
#ifdef __WXUNIVERSAL__
event.Skip();
#endif
}
#if wxUSE_TOOLBAR
void MyFrame::InitToolBar(wxToolBar* toolBar)
{
wxBitmap bitmaps[8];
bitmaps[0] = wxBitmap( new_xpm );
bitmaps[1] = wxBitmap( open_xpm );
bitmaps[2] = wxBitmap( save_xpm );
bitmaps[3] = wxBitmap( copy_xpm );
bitmaps[4] = wxBitmap( cut_xpm );
bitmaps[5] = wxBitmap( paste_xpm );
bitmaps[6] = wxBitmap( print_xpm );
bitmaps[7] = wxBitmap( help_xpm );
toolBar->AddTool(MDI_NEW_WINDOW, _T("New"), bitmaps[0], _T("New file"));
toolBar->AddTool(1, _T("Open"), bitmaps[1], _T("Open file"));
toolBar->AddTool(2, _T("Save"), bitmaps[2], _T("Save file"));
toolBar->AddSeparator();
toolBar->AddTool(3, _T("Copy"), bitmaps[3], _T("Copy"));
toolBar->AddTool(4, _T("Cut"), bitmaps[4], _T("Cut"));
toolBar->AddTool(5, _T("Paste"), bitmaps[5], _T("Paste"));
toolBar->AddSeparator();
toolBar->AddTool(6, _T("Print"), bitmaps[6], _T("Print"));
toolBar->AddSeparator();
toolBar->AddTool(MDI_ABOUT, _T("About"), bitmaps[7], _T("Help"));
toolBar->Realize();
}
#endif // wxUSE_TOOLBAR
// ---------------------------------------------------------------------------
// MyCanvas
// ---------------------------------------------------------------------------
// Define a constructor for my canvas
MyCanvas::MyCanvas(wxWindow *parent, const wxPoint& pos, const wxSize& size)
: wxScrolledWindow(parent, wxID_ANY, pos, size,
wxSUNKEN_BORDER |
wxNO_FULL_REPAINT_ON_RESIZE |
wxVSCROLL | wxHSCROLL)
{
SetBackgroundColour(wxColour(_T("WHITE")));
m_dirty = false;
}
// Define the repainting behaviour
void MyCanvas::OnDraw(wxDC& dc)
{
if ( !m_text.empty() )
dc.DrawText(m_text, 10, 10);
dc.SetFont(*wxSWISS_FONT);
dc.SetPen(*wxGREEN_PEN);
dc.DrawLine(0, 0, 200, 200);
dc.DrawLine(200, 0, 0, 200);
dc.SetBrush(*wxCYAN_BRUSH);
dc.SetPen(*wxRED_PEN);
dc.DrawRectangle(100, 100, 100, 50);
dc.DrawRoundedRectangle(150, 150, 100, 50, 20);
dc.DrawEllipse(250, 250, 100, 50);
#if wxUSE_SPLINES
dc.DrawSpline(50, 200, 50, 100, 200, 10);
#endif // wxUSE_SPLINES
dc.DrawLine(50, 230, 200, 230);
dc.DrawText(_T("This is a test string"), 50, 230);
wxPoint points[3];
points[0].x = 200; points[0].y = 300;
points[1].x = 100; points[1].y = 400;
points[2].x = 300; points[2].y = 400;
dc.DrawPolygon(3, points);
}
// This implements a tiny doodling program! Drag the mouse using the left
// button.
void MyCanvas::OnEvent(wxMouseEvent& event)
{
wxClientDC dc(this);
PrepareDC(dc);
wxPoint pt(event.GetLogicalPosition(dc));
if (xpos > -1 && ypos > -1 && event.Dragging())
{
dc.SetPen(*wxBLACK_PEN);
dc.DrawLine(xpos, ypos, pt.x, pt.y);
m_dirty = true;
}
xpos = pt.x;
ypos = pt.y;
}
// ---------------------------------------------------------------------------
// MyChild
// ---------------------------------------------------------------------------
MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
: wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition, wxDefaultSize,
wxDEFAULT_FRAME_STYLE | wxNO_FULL_REPAINT_ON_RESIZE)
{
canvas = (MyCanvas *) NULL;
my_children.Append(this);
// this should work for MDI frames as well as for normal ones
SetSizeHints(100, 100);
}
MyChild::~MyChild()
{
my_children.DeleteObject(this);
}
void MyChild::OnQuit(wxCommandEvent& WXUNUSED(event))
{
Close(true);
}
void MyChild::OnRefresh(wxCommandEvent& WXUNUSED(event))
{
if ( canvas )
canvas->Refresh();
}
void MyChild::OnChangePosition(wxCommandEvent& WXUNUSED(event))
{
Move(10, 10);
}
void MyChild::OnChangeSize(wxCommandEvent& WXUNUSED(event))
{
SetClientSize(100, 100);
}
void MyChild::OnChangeTitle(wxCommandEvent& WXUNUSED(event))
{
#if wxUSE_TEXTDLG
static wxString s_title = _T("Canvas Frame");
wxString title = wxGetTextFromUser(_T("Enter the new title for MDI child"),
_T("MDI sample question"),
s_title,
GetParent()->GetParent());
if ( !title )
return;
s_title = title;
SetTitle(s_title);
#endif // wxUSE_TEXTDLG
}
void MyChild::OnActivate(wxActivateEvent& event)
{
if ( event.GetActive() && canvas )
canvas->SetFocus();
}
void MyChild::OnMove(wxMoveEvent& event)
{
// VZ: here everything is totally wrong under MSW, the positions are
// different and both wrong (pos2 is off by 2 pixels for me which seems
// to be the width of the MDI canvas border)
wxPoint pos1 = event.GetPosition(),
pos2 = GetPosition();
wxLogStatus(wxT("position from event: (%d, %d), from frame (%d, %d)"),
pos1.x, pos1.y, pos2.x, pos2.y);
event.Skip();
}
void MyChild::OnSize(wxSizeEvent& event)
{
// VZ: under MSW the size event carries the client size (quite
// unexpectedly) *except* for the very first one which has the full
// size... what should it really be? TODO: check under wxGTK
wxSize size1 = event.GetSize(),
size2 = GetSize(),
size3 = GetClientSize();
wxLogStatus(wxT("size from event: %dx%d, from frame %dx%d, client %dx%d"),
size1.x, size1.y, size2.x, size2.y, size3.x, size3.y);
event.Skip();
}
void MyChild::OnClose(wxCloseEvent& event)
{
if ( canvas && canvas->IsDirty() )
{
if ( wxMessageBox(_T("Really close?"), _T("Please confirm"),
wxICON_QUESTION | wxYES_NO) != wxYES )
{
event.Veto();
return;
}
}
gs_nFrames--;
event.Skip();
}
#if wxUSE_CLIPBOARD
#include "wx/clipbrd.h"
void MyChild::OnPaste(wxCommandEvent& WXUNUSED(event))
{
wxClipboardLocker lock;
wxTextDataObject data;
canvas->SetText(
(
wxTheClipboard->GetData(data) ?
data.GetText() :
wxString("No text on clipboard")
).c_str()
);
}
void MyChild::OnUpdatePaste(wxUpdateUIEvent& event)
{
wxClipboardLocker lock;
event.Enable( wxTheClipboard->IsSupported(wxDF_TEXT) );
}
#endif // wxUSE_CLIPBOARD
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