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2fbb8fbbed4e8a15bed1cd539d0f51eac3019658
wxWidgets/src/os2/choice.cpp
Stefan Neis 2fbb8fbbed Disable CLIP_SIBLINGS style. 
Fixes for getting best size.
Fixed some error in flag processing.    All according to patch #1523304.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@40145 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2006-07-16 21:26:04 +00:00

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/////////////////////////////////////////////////////////////////////////////
// Name: src/os2/choice.cpp
// Purpose: wxChoice
// Author: David Webster
// Modified by:
// Created: 10/13/99
// RCS-ID: $Id$
// Copyright: (c) David Webster
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_CHOICE
#include "wx/choice.h"
#ifndef WX_PRECOMP
#include "wx/utils.h"
#include "wx/log.h"
#include "wx/settings.h"
#endif
#include "wx/os2/private.h"
IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
bool wxChoice::Create(
wxWindow* pParent
, wxWindowID vId
, const wxPoint& rPos
, const wxSize& rSize
, const wxArrayString& asChoices
, long lStyle
, const wxValidator& rValidator
, const wxString& rsName
)
{
wxCArrayString chs(asChoices);
return Create(pParent, vId, rPos, rSize, chs.GetCount(), chs.GetStrings(),
lStyle, rValidator, rsName);
}
bool wxChoice::Create(
wxWindow* pParent
, wxWindowID vId
, const wxPoint& rPos
, const wxSize& rSize
, int n
, const wxString asChoices[]
, long lStyle
, const wxValidator& rValidator
, const wxString& rsName
)
{
long lSstyle;
if (!CreateControl( pParent
,vId
,rPos
,rSize
,lStyle
,rValidator
,rsName
))
return false;
lSstyle = CBS_DROPDOWNLIST |
WS_TABSTOP |
WS_VISIBLE;
// clipping siblings does not yet work
// if (lStyle & wxCLIP_SIBLINGS )
// lSstyle |= WS_CLIPSIBLINGS;
wxASSERT_MSG( !(lStyle & wxCB_DROPDOWN) &&
!(lStyle & wxCB_READONLY) &&
!(lStyle & wxCB_SIMPLE),
wxT("this style flag is ignored by wxChoice, you "
"probably want to use a wxComboBox") );
if (!OS2CreateControl( wxT("COMBOBOX")
,lSstyle
))
return false;
//
// A choice/combobox normally has a white background (or other, depending
// on global settings) rather than inheriting the parent's background colour.
//
SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
// initialize the controls contents
for (int i = 0; i < n; i++)
{
Append(asChoices[i]);
}
SetSize( rPos.x
,rPos.y
,rSize.x
,rSize.y
);
// Set height to use with sizers i.e. without the dropdown listbox
wxFont vFont = GetFont();
int nEditHeight;
wxGetCharSize( GetHWND(), NULL, &nEditHeight, &vFont );
nEditHeight = EDIT_HEIGHT_FROM_CHAR_HEIGHT(nEditHeight);
SetBestFittingSize(wxSize(-1,nEditHeight+4)); // +2x2 for the border
return true;
} // end of wxChoice::Create
wxChoice::~wxChoice()
{
Free();
}
// ----------------------------------------------------------------------------
// adding/deleting items to/from the list
// ----------------------------------------------------------------------------
int wxChoice::DoAppend(
const wxString& rsItem
)
{
int nIndex;
LONG nIndexType = 0;
if (m_windowStyle & wxCB_SORT)
nIndexType = LIT_SORTASCENDING;
else
nIndexType = LIT_END;
nIndex = (int)::WinSendMsg( GetHwnd()
,LM_INSERTITEM
,(MPARAM)nIndexType
,(MPARAM)rsItem.c_str()
);
return nIndex;
} // end of wxChoice::DoAppend
int wxChoice::DoInsert( const wxString& rsItem, unsigned int pos )
{
wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
wxCHECK_MSG(IsValidInsert(pos), -1, wxT("invalid index"));
if (pos == GetCount())
return DoAppend(rsItem);
int nIndex;
LONG nIndexType = 0;
if (m_windowStyle & wxCB_SORT)
nIndexType = LIT_SORTASCENDING;
else
nIndexType = pos;
nIndex = (int)::WinSendMsg( GetHwnd()
,LM_INSERTITEM
,(MPARAM)nIndexType
,(MPARAM)rsItem.c_str()
);
return nIndex;
} // end of wxChoice::DoInsert
void wxChoice::Delete(unsigned int n)
{
wxCHECK_RET( IsValid(n), wxT("invalid item index in wxChoice::Delete") );
if ( HasClientObjectData() )
{
delete GetClientObject(n);
}
::WinSendMsg(GetHwnd(), LM_DELETEITEM, (MPARAM)n, (MPARAM)0);
} // end of wxChoice::Delete
void wxChoice::Clear()
{
Free();
::WinSendMsg(GetHwnd(), LM_DELETEALL, (MPARAM)0, (MPARAM)0);
} // end of wxChoice::Clear
// ----------------------------------------------------------------------------
// selection
// ----------------------------------------------------------------------------
int wxChoice::GetSelection() const
{
return((int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYSELECTION, (MPARAM)LIT_FIRST, (MPARAM)0)));
} // end of wxChoice::GetSelection
void wxChoice::SetSelection(
int n
)
{
::WinSendMsg( GetHwnd()
,LM_SELECTITEM
,(MPARAM)n
,(MPARAM)TRUE
);
} // end of wxChoice::SetSelection
// ----------------------------------------------------------------------------
// string list functions
// ----------------------------------------------------------------------------
unsigned int wxChoice::GetCount() const
{
return((unsigned int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMCOUNT, (MPARAM)0, (MPARAM)0)));
} // end of wxChoice::GetCount
void wxChoice::SetString(unsigned int n, const wxString& rsStr)
{
LONG nIndexType = 0;
void* pData;
if ( m_clientDataItemsType != wxClientData_None )
{
pData = DoGetItemClientData(n);
}
else // no client data
{
pData = NULL;
}
::WinSendMsg(GetHwnd(), LM_DELETEITEM, (MPARAM)n, 0);
if (m_windowStyle & wxCB_SORT)
nIndexType = LIT_SORTASCENDING;
else
nIndexType = LIT_END;
::WinSendMsg( GetHwnd()
,LM_INSERTITEM
,(MPARAM)nIndexType
,(MPARAM)rsStr.c_str()
);
if (pData)
{
DoSetItemClientData(n, pData);
}
} // end of wxChoice::SetString
wxString wxChoice::GetString(unsigned int n) const
{
int nLen = 0;
wxString sStr = wxEmptyString;
wxChar* zBuf;
nLen = (size_t)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXTLENGTH, (MPARAM)n, (MPARAM)0));
if (nLen != LIT_ERROR && nLen > 0)
{
zBuf = new wxChar[++nLen];
::WinSendMsg( GetHwnd()
,LM_QUERYITEMTEXT
,MPFROM2SHORT((SHORT)n, (SHORT)nLen)
,(MPARAM)zBuf
);
sStr = zBuf;
delete [] zBuf;
}
return sStr;
} // end of wxChoice::GetString
// ----------------------------------------------------------------------------
// client data
// ----------------------------------------------------------------------------
void wxChoice::DoSetItemClientData(unsigned int n, void* pClientData)
{
::WinSendMsg(GetHwnd(), LM_SETITEMHANDLE, (MPARAM)n, MPFROMP(pClientData));
} // end of wxChoice::DoSetItemClientData
void* wxChoice::DoGetItemClientData(unsigned int n) const
{
MRESULT rc = ::WinSendMsg(GetHwnd(), LM_QUERYITEMHANDLE, (MPARAM)n, (MPARAM)0);
return((void*)rc);
} // end of wxChoice::DoGetItemClientData
void wxChoice::DoSetItemClientObject(unsigned int n, wxClientData* pClientData)
{
DoSetItemClientData(n, pClientData);
} // end of wxChoice::DoSetItemClientObject
wxClientData* wxChoice::DoGetItemClientObject(unsigned int n) const
{
return (wxClientData *)DoGetItemClientData(n);
} // end of wxChoice::DoGetItemClientObject
// ----------------------------------------------------------------------------
// wxOS2 specific helpers
// ----------------------------------------------------------------------------
void wxChoice::DoSetSize(int nX,
int nY,
int nWidth,
int WXUNUSED(nHeight),
int nSizeFlags)
{
//
// Ignore height parameter because height doesn't mean 'initially
// displayed' height, it refers to the drop-down menu as well. The
// wxWidgets interpretation is different; also, getting the size returns
// the _displayed_ size (NOT the drop down menu size) so
// setting-getting-setting size would not work.
//
wxControl::DoSetSize( nX
,nY
,nWidth
,wxDefaultCoord
,nSizeFlags
);
} // end of wxChoice::DoSetSize
wxSize wxChoice::DoGetBestSize() const
{
//
// Find the widest string
//
int nLineWidth;
int nChoiceWidth = 0;
int nCx;
int nCy;
wxFont vFont = (wxFont)GetFont();
const unsigned int nItems = GetCount();
for (unsigned int i = 0; i < nItems; i++)
{
wxString sStr(GetString(i));
GetTextExtent( sStr, &nLineWidth, NULL );
if (nLineWidth > nChoiceWidth)
nChoiceWidth = nLineWidth;
}
//
// Give it some reasonable default value if there are no strings in the
// list
//
if (nChoiceWidth == 0L)
nChoiceWidth = 100L;
//
// The combobox should be larger than the widest string
//
wxGetCharSize( GetHWND(), &nCx, &nCy, &vFont );
nChoiceWidth += 5 * nCx;
//
// Choice drop-down list depends on number of items (limited to 10)
//
size_t nStrings = nItems == 0 ? 10 : wxMin(10, nItems) + 1;
int nChoiceHeight = EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * nStrings;
return wxSize(nChoiceWidth, nChoiceHeight);
} // end of wxChoice::DoGetBestSize
MRESULT wxChoice::OS2WindowProc(
WXUINT uMsg
, WXWPARAM wParam
, WXLPARAM lParam
)
{
return wxWindow::OS2WindowProc( uMsg
,wParam
,lParam
);
} // end of wxChoice::OS2WindowProc
bool wxChoice::OS2Command(
WXUINT uParam
, WXWORD WXUNUSED(wId)
)
{
if (uParam != LN_SELECT)
{
//
// "selection changed" is the only event we're after
//
return false;
}
int n = GetSelection();
if (n > -1)
{
wxCommandEvent vEvent( wxEVT_COMMAND_CHOICE_SELECTED
,m_windowId
);
vEvent.SetInt(n);
vEvent.SetEventObject(this);
vEvent.SetString(GetStringSelection());
if (HasClientObjectData())
vEvent.SetClientObject(GetClientObject(n));
else if (HasClientUntypedData())
vEvent.SetClientData(GetClientData(n));
ProcessCommand(vEvent);
}
return true;
} // end of wxChoice::OS2Command
void wxChoice::Free()
{
if (HasClientObjectData())
{
const unsigned int nCount = GetCount();
for (unsigned int n = 0; n < nCount; n++)
{
delete GetClientObject(n);
}
}
} // end of wxChoice::Free
#endif // wxUSE_CHOICE
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