/////////////////////////////////////////////////////////////////////////////
-// Name: msw/radiobut.cpp
+// Name: src/msw/radiobut.cpp
// Purpose: wxRadioButton
// Author: Julian Smart
// Modified by:
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
-#pragma implementation "radiobut.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#if wxUSE_RADIOBTN
-#ifndef WX_PRECOMP
#include "wx/radiobut.h"
-#include "wx/settings.h"
-#include "wx/brush.h"
-#include "wx/dcscreen.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/settings.h"
+ #include "wx/dcscreen.h"
+ #include "wx/toplevel.h"
#endif
#include "wx/msw/private.h"
// wxRadioButton creation
// ----------------------------------------------------------------------------
-IMPLEMENT_DYNAMIC_CLASS(wxRadioButton, wxControl)
-
void wxRadioButton::Init()
{
- m_focusJustSet = FALSE;
+ m_isChecked = false;
}
bool wxRadioButton::Create(wxWindow *parent,
const wxString& name)
{
if ( !CreateControl(parent, id, pos, size, style, validator, name) )
- return FALSE;
+ return false;
long msStyle = WS_TABSTOP;
if ( HasFlag(wxRB_GROUP) )
msStyle |= WS_GROUP;
- /*
- wxRB_SINGLE is a temporary workaround for the following problem: if you
- have 2 radiobuttons in the same group but which are not consecutive in
- the dialog, Windows can enter an infinite loop! The simplest way to
- reproduce it is to create radio button, then a panel and then another
- radio button: then checking the last button hangs the app.
-
- Ideally, we'd detect (and avoid) such situation automatically but for
- now, as I don't know how to do it, just allow the user to create
- BS_RADIOBUTTON buttons for such situations.
- */
- msStyle |= HasFlag(wxRB_SINGLE) ? BS_RADIOBUTTON : BS_AUTORADIOBUTTON;
+ // we use BS_RADIOBUTTON and not BS_AUTORADIOBUTTON because the use of the
+ // latter can easily result in the application entering an infinite loop
+ // inside IsDialogMessage()
+ //
+ // we used to use BS_RADIOBUTTON only for wxRB_SINGLE buttons but there
+ // doesn't seem to be any harm to always use it and it prevents some hangs,
+ // see #9786
+ msStyle |= BS_RADIOBUTTON;
if ( HasFlag(wxCLIP_SIBLINGS) )
msStyle |= WS_CLIPSIBLINGS;
+ if ( HasFlag(wxALIGN_RIGHT) )
+ msStyle |= BS_LEFTTEXT | BS_RIGHT;
- if ( !MSWCreateControl(_T("BUTTON"), msStyle, pos, size, label, 0) )
- return FALSE;
+ if ( !MSWCreateControl(wxT("BUTTON"), msStyle, pos, size, label, 0) )
+ return false;
// for compatibility with wxGTK, the first radio button in a group is
// always checked (this makes sense anyhow as you need to ensure that at
- // least one button in the group is checked and this is the simlpest way to
+ // least one button in the group is checked and this is the simplest way to
// do it)
if ( HasFlag(wxRB_GROUP) )
- SetValue(TRUE);
+ SetValue(true);
- return TRUE;
+ return true;
}
// ----------------------------------------------------------------------------
void wxRadioButton::SetValue(bool value)
{
- // BST_CHECKED is defined as 1, BST_UNCHECKED as 0, so we can just pass
- // value as is (we don't use BST_XXX here as they're not defined for Win16)
- (void)::SendMessage(GetHwnd(), BM_SETCHECK, (WPARAM)value, 0L);
+ ::SendMessage(GetHwnd(), BM_SETCHECK,
+ value ? BST_CHECKED : BST_UNCHECKED, 0);
+
+ m_isChecked = value;
+
+ if ( !value )
+ return;
// if we set the value of one radio button we also must clear all the other
// buttons in the same group: Windows doesn't do it automatically
- if ( value )
+ //
+ // moreover, if another radiobutton in the group currently has the focus,
+ // we have to set it to this radiobutton, else the old radiobutton will be
+ // reselected automatically, if a parent window loses the focus and regains
+ // it.
+ wxWindow * const focus = FindFocus();
+ wxTopLevelWindow * const
+ tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
+ wxCHECK_RET( tlw, wxT("radio button outside of TLW?") );
+ wxWindow * const focusInTLW = tlw->GetLastFocus();
+
+ const wxWindowList& siblings = GetParent()->GetChildren();
+ wxWindowList::compatibility_iterator nodeThis = siblings.Find(this);
+ wxCHECK_RET( nodeThis, wxT("radio button not a child of its parent?") );
+
+ // this will be set to true in the code below if the focus is in our TLW
+ // and belongs to one of the other buttons in the same group
+ bool shouldSetFocus = false;
+
+ // this will be set to true if the focus is outside of our TLW currently
+ // but the remembered focus of this TLW is one of the other buttons in the
+ // same group
+ bool shouldSetTLWFocus = false;
+
+ // if it's not the first item of the group ...
+ if ( !HasFlag(wxRB_GROUP) )
{
- const wxWindowList& siblings = GetParent()->GetChildren();
- wxWindowList::Node *nodeThis = siblings.Find(this);
- wxCHECK_RET( nodeThis, _T("radio button not a child of its parent?") );
-
- // turn off all radio buttons before this one
- for ( wxWindowList::Node *nodeBefore = nodeThis->GetPrevious();
+ // ... turn off all radio buttons before it
+ for ( wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious();
nodeBefore;
nodeBefore = nodeBefore->GetPrevious() )
{
wxRadioButton);
if ( !btn )
{
- // the radio buttons in a group must be consecutive, so there
- // are no more of them
- break;
+ // don't stop on non radio buttons, we could have intermixed
+ // buttons and e.g. static labels
+ continue;
}
- btn->SetValue(FALSE);
+ if ( btn->HasFlag(wxRB_SINGLE) )
+ {
+ // A wxRB_SINGLE button isn't part of this group
+ break;
+ }
+
+ if ( btn == focus )
+ shouldSetFocus = true;
+ else if ( btn == focusInTLW )
+ shouldSetTLWFocus = true;
+
+ btn->SetValue(false);
if ( btn->HasFlag(wxRB_GROUP) )
{
break;
}
}
+ }
- // ... and all after this one
- for ( wxWindowList::Node *nodeAfter = nodeThis->GetNext();
- nodeAfter;
- nodeAfter = nodeAfter->GetNext() )
- {
- wxRadioButton *btn = wxDynamicCast(nodeAfter->GetData(),
- wxRadioButton);
+ // ... and also turn off all buttons after this one
+ for ( wxWindowList::compatibility_iterator nodeAfter = nodeThis->GetNext();
+ nodeAfter;
+ nodeAfter = nodeAfter->GetNext() )
+ {
+ wxRadioButton *btn = wxDynamicCast(nodeAfter->GetData(),
+ wxRadioButton);
- if ( !btn || btn->HasFlag(wxRB_GROUP) )
- {
- // no more buttons or the first button of the next group
- break;
- }
+ if ( !btn )
+ continue;
- btn->SetValue(FALSE);
+ if ( btn->HasFlag(wxRB_GROUP | wxRB_SINGLE) )
+ {
+ // no more buttons or the first button of the next group
+ break;
}
+
+ if ( btn == focus )
+ shouldSetFocus = true;
+ else if ( btn == focusInTLW )
+ shouldSetTLWFocus = true;
+
+ btn->SetValue(false);
}
+
+ if ( shouldSetFocus )
+ SetFocus();
+ else if ( shouldSetTLWFocus )
+ tlw->SetLastFocus(this);
}
bool wxRadioButton::GetValue() const
{
- // NB: this will also return TRUE for BST_INDETERMINATE value if we ever
- // have 3-state radio buttons
- return ::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0L) != 0;
+ wxASSERT_MSG( m_isChecked ==
+ (::SendMessage(GetHwnd(), BM_GETCHECK, 0, 0L) != 0),
+ wxT("wxRadioButton::m_isChecked is out of sync?") );
+
+ return m_isChecked;
}
// ----------------------------------------------------------------------------
void wxRadioButton::Command (wxCommandEvent& event)
{
- SetValue(event.m_commandInt != 0);
+ SetValue(event.GetInt() != 0);
ProcessCommand(event);
}
-void wxRadioButton::SetFocus()
-{
- // when the radio button receives a WM_SETFOCUS message it generates a
- // BN_CLICKED which is totally unexpected and leads to catastrophic results
- // if you pop up a dialog from the radio button event handler as, when the
- // dialog is dismissed, the focus is returned to the radio button which
- // generates BN_CLICKED which leads to showing another dialog and so on
- // without end!
- //
- // to avoid this, we drop the pseudo BN_CLICKED events generated when the
- // button gains focus
- m_focusJustSet = TRUE;
-
- wxControl::SetFocus();
-}
-
bool wxRadioButton::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
{
if ( param != BN_CLICKED )
- return FALSE;
+ return false;
- if ( m_focusJustSet )
- {
- // see above: we want to ignore this event
- m_focusJustSet = FALSE;
- }
- else // a real clicked event
+ if ( !m_isChecked )
{
- bool isChecked = GetValue();
-
- if ( HasFlag(wxRB_SINGLE) )
- {
- // when we use a "manual" radio button, we have to check the button
- // ourselves -- but it's reset to unchecked state by the user code
- // (presumably when another button is pressed)
- if ( !isChecked )
- SetValue(TRUE);
- }
+ // we need to manually update the button state as we use BS_RADIOBUTTON
+ // and not BS_AUTORADIOBUTTON
+ SetValue(true);
wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId());
event.SetEventObject( this );
- event.SetInt(isChecked);
+ event.SetInt(true); // always checked
ProcessCommand(event);
}
- return TRUE;
+ return true;
}
// ----------------------------------------------------------------------------
dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
s_radioSize = dc.GetCharHeight();
+
+ // radio button bitmap size under CE is bigger than the font height,
+ // adding just one pixel seems to work fine for the default font but it
+ // would be nice to find some better way to find the correct height
+#ifdef __WXWINCE__
+ s_radioSize++;
+#endif // __WXWINCE__
}
wxString str = GetLabel();
int wRadio, hRadio;
if ( !str.empty() )
{
- GetTextExtent(str, &wRadio, &hRadio);
+ GetTextExtent(GetLabelText(str), &wRadio, &hRadio);
wRadio += s_radioSize + GetCharWidth();
if ( hRadio < s_radioSize )
hRadio = s_radioSize;
}
- return wxSize(wRadio, hRadio);
+ wxSize best(wRadio, hRadio);
+ CacheBestSize(best);
+ return best;
}
-long wxRadioButton::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
+WXDWORD wxRadioButton::MSWGetStyle(long style, WXDWORD *exstyle) const
{
- if (nMsg == WM_SETFOCUS)
- {
- m_focusJustSet = TRUE;
+ WXDWORD styleMSW = wxControl::MSWGetStyle(style, exstyle);
- long ret = wxControl::MSWWindowProc(nMsg, wParam, lParam);
+ if ( style & wxRB_GROUP )
+ styleMSW |= WS_GROUP;
- m_focusJustSet = FALSE;
-
- return ret;
- }
- return wxControl::MSWWindowProc(nMsg, wParam, lParam);
+ return styleMSW;
}
#endif // wxUSE_RADIOBTN
projects / wxWidgets.git / blobdiff