c5b3143a47
(there may be intervening controls). Without this fix, an out-of-sync assert is generated when clicking on a radio button and then calling GetValue(). git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@29971 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
304 lines
9.7 KiB
C++
304 lines
9.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: msw/radiobut.cpp
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// Purpose: wxRadioButton
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// Author: Julian Smart
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// Modified by:
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// Created: 04/01/98
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// RCS-ID: $Id$
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// Copyright: (c) Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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// ============================================================================
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// declarations
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// ============================================================================
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
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#pragma implementation "radiobut.h"
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#endif
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// For compilers that support precompilation, includes "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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#if wxUSE_RADIOBTN
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#ifndef WX_PRECOMP
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#include "wx/radiobut.h"
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#include "wx/settings.h"
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#include "wx/dcscreen.h"
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#endif
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#include "wx/msw/private.h"
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// ============================================================================
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// wxRadioButton implementation
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// ============================================================================
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// ----------------------------------------------------------------------------
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// wxRadioButton creation
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// ----------------------------------------------------------------------------
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#if wxUSE_EXTENDED_RTTI
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WX_DEFINE_FLAGS( wxRadioButtonStyle )
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wxBEGIN_FLAGS( wxRadioButtonStyle )
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// new style border flags, we put them first to
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// use them for streaming out
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wxFLAGS_MEMBER(wxBORDER_SIMPLE)
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wxFLAGS_MEMBER(wxBORDER_SUNKEN)
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wxFLAGS_MEMBER(wxBORDER_DOUBLE)
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wxFLAGS_MEMBER(wxBORDER_RAISED)
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wxFLAGS_MEMBER(wxBORDER_STATIC)
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wxFLAGS_MEMBER(wxBORDER_NONE)
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// old style border flags
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wxFLAGS_MEMBER(wxSIMPLE_BORDER)
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wxFLAGS_MEMBER(wxSUNKEN_BORDER)
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wxFLAGS_MEMBER(wxDOUBLE_BORDER)
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wxFLAGS_MEMBER(wxRAISED_BORDER)
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wxFLAGS_MEMBER(wxSTATIC_BORDER)
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wxFLAGS_MEMBER(wxBORDER)
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// standard window styles
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wxFLAGS_MEMBER(wxTAB_TRAVERSAL)
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wxFLAGS_MEMBER(wxCLIP_CHILDREN)
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wxFLAGS_MEMBER(wxTRANSPARENT_WINDOW)
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wxFLAGS_MEMBER(wxWANTS_CHARS)
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wxFLAGS_MEMBER(wxFULL_REPAINT_ON_RESIZE)
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wxFLAGS_MEMBER(wxALWAYS_SHOW_SB )
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wxFLAGS_MEMBER(wxVSCROLL)
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wxFLAGS_MEMBER(wxHSCROLL)
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wxFLAGS_MEMBER(wxRB_GROUP)
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wxEND_FLAGS( wxRadioButtonStyle )
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IMPLEMENT_DYNAMIC_CLASS_XTI(wxRadioButton, wxControl,"wx/radiobut.h")
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wxBEGIN_PROPERTIES_TABLE(wxRadioButton)
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wxEVENT_PROPERTY( Click , wxEVT_COMMAND_RADIOBUTTON_SELECTED , wxCommandEvent )
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wxPROPERTY( Font , wxFont , SetFont , GetFont , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group"))
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wxPROPERTY( Label,wxString, SetLabel, GetLabel, wxString(), 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
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wxPROPERTY( Value ,bool, SetValue, GetValue, EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group") )
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wxPROPERTY_FLAGS( WindowStyle , wxRadioButtonStyle , long , SetWindowStyleFlag , GetWindowStyleFlag , EMPTY_MACROVALUE , 0 /*flags*/ , wxT("Helpstring") , wxT("group")) // style
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wxEND_PROPERTIES_TABLE()
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wxBEGIN_HANDLERS_TABLE(wxRadioButton)
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wxEND_HANDLERS_TABLE()
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wxCONSTRUCTOR_6( wxRadioButton , wxWindow* , Parent , wxWindowID , Id , wxString , Label , wxPoint , Position , wxSize , Size , long , WindowStyle )
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#else
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IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
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#endif
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void wxRadioButton::Init()
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{
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m_isChecked = false;
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}
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bool wxRadioButton::Create(wxWindow *parent,
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wxWindowID id,
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const wxString& label,
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const wxPoint& pos,
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const wxSize& size,
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long style,
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const wxValidator& validator,
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const wxString& name)
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{
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if ( !CreateControl(parent, id, pos, size, style, validator, name) )
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return false;
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long msStyle = WS_TABSTOP;
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if ( HasFlag(wxRB_GROUP) )
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msStyle |= WS_GROUP;
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/*
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wxRB_SINGLE is a temporary workaround for the following problem: if you
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have 2 radiobuttons in the same group but which are not consecutive in
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the dialog, Windows can enter an infinite loop! The simplest way to
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reproduce it is to create radio button, then a panel and then another
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radio button: then checking the last button hangs the app.
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Ideally, we'd detect (and avoid) such situation automatically but for
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now, as I don't know how to do it, just allow the user to create
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BS_RADIOBUTTON buttons for such situations.
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*/
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msStyle |= HasFlag(wxRB_SINGLE) ? BS_RADIOBUTTON : BS_AUTORADIOBUTTON;
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if ( HasFlag(wxCLIP_SIBLINGS) )
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msStyle |= WS_CLIPSIBLINGS;
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if ( HasFlag(wxALIGN_RIGHT) )
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msStyle |= BS_LEFTTEXT | BS_RIGHT;
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if ( !MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, 0) )
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return false;
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// for compatibility with wxGTK, the first radio button in a group is
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// always checked (this makes sense anyhow as you need to ensure that at
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// least one button in the group is checked and this is the simlpest way to
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// do it)
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if ( HasFlag(wxRB_GROUP) )
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SetValue(true);
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return true;
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}
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// ----------------------------------------------------------------------------
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// wxRadioButton functions
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// ----------------------------------------------------------------------------
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void wxRadioButton::SetValue(bool value)
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{
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(void)::SendMessage(GetHwnd(), BM_SETCHECK, (value?BST_CHECKED:BST_UNCHECKED), 0L);
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m_isChecked = value;
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// if we set the value of one radio button we also must clear all the other
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// buttons in the same group: Windows doesn't do it automatically
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if ( m_isChecked )
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{
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const wxWindowList& siblings = GetParent()->GetChildren();
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wxWindowList::compatibility_iterator nodeThis = siblings.Find(this);
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wxCHECK_RET( nodeThis, _T("radio button not a child of its parent?") );
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// if it's not the first item of the group ...
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if ( !HasFlag(wxRB_GROUP) )
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{
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// ... turn off all radio buttons before it
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for ( wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious();
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nodeBefore;
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nodeBefore = nodeBefore->GetPrevious() )
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{
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wxRadioButton *btn = wxDynamicCast(nodeBefore->GetData(),
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wxRadioButton);
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if ( btn && btn->HasFlag(wxRB_SINGLE) )
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{
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// A wxRB_SINGLE button isn't part of this group
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break;
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}
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if (btn)
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{
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btn->SetValue(false);
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if ( btn->HasFlag(wxRB_GROUP) )
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{
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// even if there are other radio buttons before this one,
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// they're not in the same group with us
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break;
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}
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}
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}
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}
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// ... and also turn off all buttons after this one
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for ( wxWindowList::compatibility_iterator nodeAfter = nodeThis->GetNext();
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nodeAfter;
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nodeAfter = nodeAfter->GetNext() )
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{
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wxRadioButton *btn = wxDynamicCast(nodeAfter->GetData(),
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wxRadioButton);
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if ( btn && (btn->HasFlag(wxRB_GROUP) || btn->HasFlag(wxRB_SINGLE) ) )
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{
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// no more buttons or the first button of the next group
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break;
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}
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if (btn)
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btn->SetValue(false);
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}
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}
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}
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bool wxRadioButton::GetValue() const
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{
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wxASSERT_MSG( m_isChecked ==
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(::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0L) != 0),
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_T("wxRadioButton::m_isChecked is out of sync?") );
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return m_isChecked;
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}
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// ----------------------------------------------------------------------------
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// wxRadioButton event processing
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// ----------------------------------------------------------------------------
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void wxRadioButton::Command (wxCommandEvent& event)
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{
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SetValue(event.m_commandInt != 0);
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ProcessCommand(event);
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}
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bool wxRadioButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
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{
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if ( param != BN_CLICKED )
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return false;
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if ( !m_isChecked )
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{
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// we have to do this for BS_RADIOBUTTON anyhow and, strangely enough,
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// sometimes this is needed even for BS_AUTORADIOBUTTON (when we
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// receive focus the button gets BN_CLICKED but stays unchecked!)
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SetValue(true);
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wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId());
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event.SetEventObject( this );
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event.SetInt(true); // always checked
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ProcessCommand(event);
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}
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return true;
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}
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// ----------------------------------------------------------------------------
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// wxRadioButton geometry
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// ----------------------------------------------------------------------------
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wxSize wxRadioButton::DoGetBestSize() const
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{
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static int s_radioSize = 0;
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if ( !s_radioSize )
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{
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wxScreenDC dc;
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dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
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s_radioSize = dc.GetCharHeight();
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}
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wxString str = GetLabel();
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int wRadio, hRadio;
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if ( !str.empty() )
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{
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GetTextExtent(str, &wRadio, &hRadio);
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wRadio += s_radioSize + GetCharWidth();
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if ( hRadio < s_radioSize )
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hRadio = s_radioSize;
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}
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else
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{
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wRadio = s_radioSize;
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hRadio = s_radioSize;
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}
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return wxSize(wRadio, hRadio);
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}
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#endif // wxUSE_RADIOBTN
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