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common
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framecmn.cpp
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2002-05-02
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/////////////////////////////////////////////////////////////////////////////
// Name: common/framecmn.cpp
// Purpose: common (for all platforms) wxFrame functions
// Author: Julian Smart, Vadim Zeitlin
// Created: 01/02/97
// Id: $Id: framecmn.cpp,v 1.34 2002/05/02 20:07:10 MBN Exp $
// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// declarations
// ============================================================================
// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------
#ifdef __GNUG__
#pragma implementation "framebase.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include "wx/frame.h"
#include "wx/menu.h"
#include "wx/menuitem.h"
#include "wx/dcclient.h"
#endif // WX_PRECOMP
#if wxUSE_TOOLBAR
#include "wx/toolbar.h"
#endif
#if wxUSE_STATUSBAR
#include "wx/statusbr.h"
#endif
// FIXME - temporary hack in absence of wxTLW in all ports!
#ifndef wxTopLevelWindowNative
#define wxTopLevelWindow wxTopLevelWindowBase
#endif
// ----------------------------------------------------------------------------
// event table
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxFrameBase, wxTopLevelWindow)
EVT_IDLE(wxFrameBase::OnIdle)
EVT_MENU_HIGHLIGHT_ALL(wxFrameBase::OnMenuHighlight)
END_EVENT_TABLE()
// ============================================================================
// implementation
// ============================================================================
// ----------------------------------------------------------------------------
// construction/destruction
// ----------------------------------------------------------------------------
wxFrameBase::wxFrameBase()
{
#if wxUSE_MENUS
m_frameMenuBar = NULL;
#endif // wxUSE_MENUS
#if wxUSE_TOOLBAR
m_frameToolBar = NULL;
#endif // wxUSE_TOOLBAR
#if wxUSE_STATUSBAR
m_frameStatusBar = NULL;
#endif // wxUSE_STATUSBAR
m_statusBarPane = 0;
}
wxFrameBase::~wxFrameBase()
{
// this destructor is required for Darwin
}
wxFrame *wxFrameBase::New(wxWindow *parent,
wxWindowID id,
const wxString& title,
const wxPoint& pos,
const wxSize& size,
long style,
const wxString& name)
{
return new wxFrame(parent, id, title, pos, size, style, name);
}
void wxFrameBase::DeleteAllBars()
{
#if wxUSE_MENUS
if ( m_frameMenuBar )
{
delete m_frameMenuBar;
m_frameMenuBar = (wxMenuBar *) NULL;
}
#endif // wxUSE_MENUS
#if wxUSE_STATUSBAR
if ( m_frameStatusBar )
{
delete m_frameStatusBar;
m_frameStatusBar = (wxStatusBar *) NULL;
}
#endif // wxUSE_STATUSBAR
#if wxUSE_TOOLBAR
if ( m_frameToolBar )
{
delete m_frameToolBar;
m_frameToolBar = (wxToolBar *) NULL;
}
#endif // wxUSE_TOOLBAR
}
bool wxFrameBase::IsOneOfBars(const wxWindow *win) const
{
#if wxUSE_MENUS
if ( win == GetMenuBar() )
return TRUE;
#endif // wxUSE_MENUS
#if wxUSE_STATUSBAR
if ( win == GetStatusBar() )
return TRUE;
#endif // wxUSE_STATUSBAR
#if wxUSE_TOOLBAR
if ( win == GetToolBar() )
return TRUE;
#endif // wxUSE_TOOLBAR
return FALSE;
}
// ----------------------------------------------------------------------------
// wxFrame size management: we exclude the areas taken by menu/status/toolbars
// from the client area, so the client area is what's really available for the
// frame contents
// ----------------------------------------------------------------------------
// get the origin of the client area in the client coordinates
wxPoint wxFrameBase::GetClientAreaOrigin() const
{
wxPoint pt = wxTopLevelWindow::GetClientAreaOrigin();
#if wxUSE_TOOLBAR && !defined(__WXUNIVERSAL__)
wxToolBar *toolbar = GetToolBar();
if ( toolbar && toolbar->IsShown() )
{
int w, h;
toolbar->GetSize(&w, &h);
if ( toolbar->GetWindowStyleFlag() & wxTB_VERTICAL )
{
pt.x += w;
}
else
{
pt.y += h;
}
}
#endif // wxUSE_TOOLBAR
return pt;
}
// ----------------------------------------------------------------------------
// misc
// ----------------------------------------------------------------------------
bool wxFrameBase::ProcessCommand(int id)
{
#if wxUSE_MENUS
wxMenuBar *bar = GetMenuBar();
if ( !bar )
return FALSE;
wxCommandEvent commandEvent(wxEVT_COMMAND_MENU_SELECTED, id);
commandEvent.SetEventObject(this);
wxMenuItem *item = bar->FindItem(id);
if (item)
{
if (!item->IsEnabled())
return TRUE;
if (item->IsCheckable())
{
item->Toggle();
// use the new value
commandEvent.SetInt(item->IsChecked());
}
}
return GetEventHandler()->ProcessEvent(commandEvent);
#else // !wxUSE_MENUS
return FALSE;
#endif // wxUSE_MENUS/!wxUSE_MENUS
}
// ----------------------------------------------------------------------------
// event handlers
// ----------------------------------------------------------------------------
void wxFrameBase::OnMenuHighlight(wxMenuEvent& event)
{
#if wxUSE_STATUSBAR
(void)ShowMenuHelp(GetStatusBar(), event.GetMenuId());
#endif // wxUSE_STATUSBAR
}
void wxFrameBase::OnIdle(wxIdleEvent& WXUNUSED(event) )
{
#if wxUSE_MENUS
DoMenuUpdates();
#endif // wxUSE_MENUS
}
// ----------------------------------------------------------------------------
// status bar stuff
// ----------------------------------------------------------------------------
#if wxUSE_STATUSBAR
wxStatusBar* wxFrameBase::CreateStatusBar(int number,
long style,
wxWindowID id,
const wxString& name)
{
// the main status bar can only be created once (or else it should be
// deleted before calling CreateStatusBar() again)
wxCHECK_MSG( !m_frameStatusBar, (wxStatusBar *)NULL,
wxT("recreating status bar in wxFrame") );
m_frameStatusBar = OnCreateStatusBar( number, style, id, name );
if ( m_frameStatusBar )
PositionStatusBar();
return m_frameStatusBar;
}
wxStatusBar *wxFrameBase::OnCreateStatusBar(int number,
long style,
wxWindowID id,
const wxString& name)
{
wxStatusBar *statusBar = new wxStatusBar(this, id, style, name);
statusBar->SetFieldsCount(number);
return statusBar;
}
void wxFrameBase::SetStatusText(const wxString& text, int number)
{
wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
m_frameStatusBar->SetStatusText(text, number);
}
void wxFrameBase::SetStatusWidths(int n, const int widths_field[] )
{
wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set widths for") );
m_frameStatusBar->SetStatusWidths(n, widths_field);
PositionStatusBar();
}
void wxFrameBase::PushStatusText(const wxString& text, int number)
{
wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
m_frameStatusBar->PushStatusText(text, number);
}
void wxFrameBase::PopStatusText(int number)
{
wxCHECK_RET( m_frameStatusBar != NULL, wxT("no statusbar to set text for") );
m_frameStatusBar->PopStatusText(number);
}
void wxFrameBase::DoGiveHelp(const wxString& text, bool show)
{
#if wxUSE_STATUSBAR
if ( m_statusBarPane < 0 ) return;
wxStatusBar* statbar = GetStatusBar();
if ( !statbar ) return;
wxString help = show ? text : wxString();
statbar->SetStatusText( help, m_statusBarPane );
#endif // wxUSE_STATUSBAR
}
bool wxFrameBase::ShowMenuHelp(wxStatusBar *WXUNUSED(statbar), int menuId)
{
#if wxUSE_MENUS
// if no help string found, we will clear the status bar text
wxString helpString;
bool show = menuId != wxID_SEPARATOR && menuId != -2 /* wxID_TITLE */;
if ( show )
{
wxMenuBar *menuBar = GetMenuBar();
if ( menuBar )
{
// it's ok if we don't find the item because it might belong
// to the popup menu
wxMenuItem *item = menuBar->FindItem(menuId);
if ( item )
helpString = item->GetHelp();
}
}
DoGiveHelp(helpString, show);
return !helpString.IsEmpty();
#else // !wxUSE_MENUS
return FALSE;
#endif // wxUSE_MENUS/!wxUSE_MENUS
}
#endif // wxUSE_STATUSBAR
// ----------------------------------------------------------------------------
// toolbar stuff
// ----------------------------------------------------------------------------
#if wxUSE_TOOLBAR
wxToolBar* wxFrameBase::CreateToolBar(long style,
wxWindowID id,
const wxString& name)
{
// the main toolbar can't be recreated (unless it was explicitly deeleted
// before)
wxCHECK_MSG( !m_frameToolBar, (wxToolBar *)NULL,
wxT("recreating toolbar in wxFrame") );
m_frameToolBar = OnCreateToolBar(style, id, name);
return m_frameToolBar;
}
wxToolBar* wxFrameBase::OnCreateToolBar(long style,
wxWindowID id,
const wxString& name)
{
return new wxToolBar(this, id,
wxDefaultPosition, wxDefaultSize,
style, name);
}
#endif // wxUSE_TOOLBAR
// ----------------------------------------------------------------------------
// menus
// ----------------------------------------------------------------------------
#if wxUSE_MENUS
// update all menus
void wxFrameBase::DoMenuUpdates()
{
wxMenuBar* bar = GetMenuBar();
#ifdef __WXMSW__
wxWindow* focusWin = wxFindFocusDescendant((wxWindow*) this);
#else
wxWindow* focusWin = (wxWindow*) NULL;
#endif
if ( bar != NULL )
{
int nCount = bar->GetMenuCount();
for (int n = 0; n < nCount; n++)
DoMenuUpdates(bar->GetMenu(n), focusWin);
}
}
// update a menu and all submenus recursively
void wxFrameBase::DoMenuUpdates(wxMenu* menu, wxWindow* focusWin)
{
wxEvtHandler* evtHandler = focusWin ? focusWin->GetEventHandler() : GetEventHandler();
wxMenuItemList::Node* node = menu->GetMenuItems().GetFirst();
while (node)
{
wxMenuItem* item = node->GetData();
if ( !item->IsSeparator() )
{
wxWindowID id = item->GetId();
wxUpdateUIEvent event(id);
event.SetEventObject( this );
if (evtHandler->ProcessEvent(event))
{
if (event.GetSetText())
menu->SetLabel(id, event.GetText());
if (event.GetSetChecked())
menu->Check(id, event.GetChecked());
if (event.GetSetEnabled())
menu->Enable(id, event.GetEnabled());
}
if (item->GetSubMenu())
DoMenuUpdates(item->GetSubMenu(), (wxWindow*) NULL);
}
node = node->GetNext();
}
}
void wxFrameBase::DetachMenuBar()
{
if ( m_frameMenuBar )
{
m_frameMenuBar->Detach();
m_frameMenuBar = NULL;
}
}
void wxFrameBase::AttachMenuBar(wxMenuBar *menubar)
{
if ( menubar )
{
menubar->Attach((wxFrame *)this);
m_frameMenuBar = menubar;
}
}
void wxFrameBase::SetMenuBar(wxMenuBar *menubar)
{
if ( menubar == GetMenuBar() )
{
// nothing to do
return;
}
DetachMenuBar();
AttachMenuBar(menubar);
}
#endif // wxUSE_MENUS