d5f8e9457b
for wxOS2 git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@18425 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
305 lines
9.0 KiB
C++
305 lines
9.0 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: radiobut.cpp
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// Purpose: wxRadioButton
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// Author: David Webster
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// Modified by:
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// Created: 10/12/99
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// RCS-ID: $Id$
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// Copyright: (c) David Webster
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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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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#ifndef WX_PRECOMP
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#include <stdio.h>
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#include "wx/setup.h"
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#include "wx/radiobut.h"
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#include "wx/brush.h"
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#include "wx/dcscreen.h"
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#include "wx/settings.h"
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#endif
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#include "wx/os2/private.h"
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IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
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extern void wxAssociateWinWithHandle( HWND hWnd
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,wxWindowOS2* pWin
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);
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void wxRadioButton::Init()
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{
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m_bFocusJustSet = FALSE;
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} // end of wxRadioButton::Init
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void wxRadioButton::Command (
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wxCommandEvent& rEvent
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)
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{
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SetValue ((rEvent.GetInt() != 0) );
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ProcessCommand (rEvent);
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} // end of wxRadioButton::Command
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bool wxRadioButton::Create(
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wxWindow* pParent
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, wxWindowID vId
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, const wxString& rsLabel
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, const wxPoint& rPos
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, const wxSize& rSize
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, long lStyle
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, const wxValidator& rValidator
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, const wxString& rsName
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)
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{
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if ( !CreateControl( pParent
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,vId
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,rPos
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,rSize
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,lStyle
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,rValidator
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,rsName))
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return FALSE;
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long lSstyle = WS_TABSTOP;
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if (HasFlag(wxRB_GROUP))
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lSstyle |= 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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//
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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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lSstyle |= HasFlag(wxRB_SINGLE) ? BS_RADIOBUTTON : BS_AUTORADIOBUTTON;
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if (HasFlag(wxCLIP_SIBLINGS))
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lSstyle |= WS_CLIPSIBLINGS;
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if (!OS2CreateControl( _T("BUTTON")
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,lSstyle
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,rPos
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,rSize
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,rsLabel
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,0
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))
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return FALSE;
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wxAssociateWinWithHandle(m_hWnd, this);
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if (HasFlag(wxRB_GROUP))
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SetValue(TRUE);
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SetFont(*wxSMALL_FONT);
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SetSize( rPos.x
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,rPos.y
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,rSize.x
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,rSize.y
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);
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return TRUE;
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} // end of wxRadioButton::Create
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wxSize wxRadioButton::DoGetBestSize() const
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{
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static int snRadioSize = 0;
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if (!snRadioSize)
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{
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wxScreenDC vDC;
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vDC.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
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snRadioSize = vDC.GetCharHeight();
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}
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wxString sStr = GetLabel();
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int nRadioWidth;
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int nRadioHeight;
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if (!sStr.empty())
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{
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GetTextExtent( sStr
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,&nRadioWidth
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,&nRadioHeight
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);
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nRadioWidth += snRadioSize + GetCharWidth();
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if (nRadioHeight < snRadioSize)
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nRadioHeight = snRadioSize;
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}
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else
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{
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nRadioWidth = snRadioSize;
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nRadioHeight = snRadioSize;
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}
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return wxSize( nRadioWidth
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,nRadioHeight
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);
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} // end of wxRadioButton::DoGetBestSize
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//
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// Get single selection, for single choice list items
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//
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bool wxRadioButton::GetValue() const
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{
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return((::WinSendMsg((HWND) GetHWND(), BM_QUERYCHECK, (MPARAM)0L, (MPARAM)0L) != 0));
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} // end of wxRadioButton::GetValue
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bool wxRadioButton::OS2Command(
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WXUINT wParam
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, WXWORD wId
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)
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{
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if (wParam != BN_CLICKED)
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return FALSE;
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if (m_bFocusJustSet)
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{
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//
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// See above: we want to ignore this event
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//
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m_bFocusJustSet = FALSE;
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}
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else
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{
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bool bIsChecked = GetValue();
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if (HasFlag(wxRB_SINGLE))
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{
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//
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// When we use a "manual" radio button, we have to check the button
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// ourselves -- but it's reset to unchecked state by the user code
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// (presumably when another button is pressed)
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//
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if (!bIsChecked )
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SetValue(TRUE);
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}
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wxCommandEvent rEvent( wxEVT_COMMAND_RADIOBUTTON_SELECTED
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,m_windowId
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);
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rEvent.SetEventObject(this);
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ProcessCommand(rEvent);
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}
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return TRUE;
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} // end of wxRadioButton::OS2Command
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void wxRadioButton::SetFocus()
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{
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// when the radio button receives a WM_SETFOCUS message it generates a
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// BN_CLICKED which is totally unexpected and leads to catastrophic results
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// if you pop up a dialog from the radio button event handler as, when the
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// dialog is dismissed, the focus is returned to the radio button which
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// generates BN_CLICKED which leads to showing another dialog and so on
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// without end!
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//
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// to aviod this, we drop the pseudo BN_CLICKED events generated when the
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// button gains focus
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m_bFocusJustSet = TRUE;
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wxControl::SetFocus();
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}
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void wxRadioButton::SetLabel(
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const wxString& rsLabel
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)
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{
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::WinSetWindowText((HWND)GetHWND(), (const char *)rsLabel.c_str());
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} // end of wxRadioButton::SetLabel
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void wxRadioButton::SetValue(
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bool bValue
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)
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{
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::WinSendMsg((HWND)GetHWND(), BM_SETCHECK, (MPARAM)bValue, (MPARAM)0);
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if (bValue)
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{
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const wxWindowList& rSiblings = GetParent()->GetChildren();
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wxWindowList::Node* pNodeThis = rSiblings.Find(this);
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wxCHECK_RET(pNodeThis, _T("radio button not a child of its parent?"));
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//
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// Turn off all radio buttons before this one
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//
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for ( wxWindowList::Node* pNodeBefore = pNodeThis->GetPrevious();
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pNodeBefore;
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pNodeBefore = pNodeBefore->GetPrevious() )
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{
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wxRadioButton* pBtn = wxDynamicCast( pNodeBefore->GetData()
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,wxRadioButton
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);
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if (!pBtn)
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{
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//
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// The radio buttons in a group must be consecutive, so there
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// are no more of them
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//
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break;
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}
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pBtn->SetValue(FALSE);
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if (pBtn->HasFlag(wxRB_GROUP))
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{
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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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//
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break;
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}
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}
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//
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// ... and all after this one
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//
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for (wxWindowList::Node* pNodeAfter = pNodeThis->GetNext();
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pNodeAfter;
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pNodeAfter = pNodeAfter->GetNext())
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{
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wxRadioButton* pBtn = wxDynamicCast( pNodeAfter->GetData()
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,wxRadioButton
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);
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if (!pBtn || pBtn->HasFlag(wxRB_GROUP) )
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{
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//
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// No more buttons or the first button of the next group
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//
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break;
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}
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pBtn->SetValue(FALSE);
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}
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}
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} // end of wxRadioButton::SetValue
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MRESULT wxRadioButton::OS2WindowProc(
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WXUINT uMsg
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, WXWPARAM wParam
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, WXLPARAM lParam
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)
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{
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if (uMsg == WM_SETFOCUS)
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{
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m_bFocusJustSet = TRUE;
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MRESULT mRc = wxControl::OS2WindowProc( uMsg
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,wParam
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,lParam
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);
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m_bFocusJustSet = FALSE;
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return mRc;
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}
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return wxControl::OS2WindowProc( uMsg
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,wParam
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,lParam
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);
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} // end of wxRadioButton::OS2WindowProc
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