wxDFB: fix rendering artefacts when scrolling wxScrolledWindow that contains other...

[wxWidgets.git] / src / common / ctrlcmn.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        src/common/ctrlcmn.cpp
// Purpose:     wxControl common interface
// Author:      Vadim Zeitlin
// Modified by:
// Created:     26.07.99
// RCS-ID:      $Id$
// Copyright:   (c) wxWidgets team
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
    #pragma hdrstop
#endif

#if wxUSE_CONTROLS

#include "wx/control.h"

#ifndef WX_PRECOMP
    #include "wx/log.h"
    #include "wx/radiobut.h"
    #include "wx/statbmp.h"
    #include "wx/bitmap.h"
    #include "wx/utils.h"       // for wxStripMenuCodes()
#endif

const wxChar wxControlNameStr[] = wxT("control");

// ============================================================================
// implementation
// ============================================================================

wxControlBase::~wxControlBase()
{
    // this destructor is required for Darwin
}

bool wxControlBase::Create(wxWindow *parent,
                           wxWindowID id,
                           const wxPoint &pos,
                           const wxSize &size,
                           long style,
                           const wxValidator& wxVALIDATOR_PARAM(validator),
                           const wxString &name)
{
    bool ret = wxWindow::Create(parent, id, pos, size, style, name);

#if wxUSE_VALIDATORS
    if ( ret )
        SetValidator(validator);
#endif // wxUSE_VALIDATORS

    return ret;
}

bool wxControlBase::CreateControl(wxWindowBase *parent,
                                  wxWindowID id,
                                  const wxPoint& pos,
                                  const wxSize& size,
                                  long style,
                                  const wxValidator& validator,
                                  const wxString& name)
{
    // even if it's possible to create controls without parents in some port,
    // it should surely be discouraged because it doesn't work at all under
    // Windows
    wxCHECK_MSG( parent, false, wxT("all controls must have parents") );

    if ( !CreateBase(parent, id, pos, size, style, validator, name) )
        return false;

    parent->AddChild(this);

    return true;
}

/* static */
wxString wxControlBase::GetLabelText(const wxString& label)
{
    // we don't want strip the TABs here, just the mnemonics
    return wxStripMenuCodes(label, wxStrip_Mnemonics);
}

void wxControlBase::Command(wxCommandEvent& event)
{
    (void)GetEventHandler()->ProcessEvent(event);
}

void wxControlBase::InitCommandEvent(wxCommandEvent& event) const
{
    event.SetEventObject((wxControlBase *)this);    // const_cast

    // event.SetId(GetId()); -- this is usuall done in the event ctor

    switch ( m_clientDataType )
    {
        case wxClientData_Void:
            event.SetClientData(GetClientData());
            break;

        case wxClientData_Object:
            event.SetClientObject(GetClientObject());
            break;

        case wxClientData_None:
            // nothing to do
            ;
    }
}


void wxControlBase::SetLabel( const wxString &label )
{
    InvalidateBestSize();
    wxWindow::SetLabel(label);
}

bool wxControlBase::SetFont(const wxFont& font)
{
    InvalidateBestSize();
    return wxWindow::SetFont(font);
}

// wxControl-specific processing after processing the update event
void wxControlBase::DoUpdateWindowUI(wxUpdateUIEvent& event)
{
    // call inherited
    wxWindowBase::DoUpdateWindowUI(event);

    // update label
    if ( event.GetSetText() )
    {
        if ( event.GetText() != GetLabel() )
            SetLabel(event.GetText());
    }

    // Unfortunately we don't yet have common base class for
    // wxRadioButton, so we handle updates of radiobuttons here.
    // TODO: If once wxRadioButtonBase will exist, move this code there.
#if wxUSE_RADIOBTN
    if ( event.GetSetChecked() )
    {
        wxRadioButton *radiobtn = wxDynamicCastThis(wxRadioButton);
        if ( radiobtn )
            radiobtn->SetValue(event.GetChecked());
    }
#endif // wxUSE_RADIOBTN
}

// ----------------------------------------------------------------------------
// wxStaticBitmap
// ----------------------------------------------------------------------------

#if wxUSE_STATBMP

wxStaticBitmapBase::~wxStaticBitmapBase()
{
    // this destructor is required for Darwin
}

wxSize wxStaticBitmapBase::DoGetBestSize() const
{
    wxSize best;
    wxBitmap bmp = GetBitmap();
    if ( bmp.Ok() )
        best = wxSize(bmp.GetWidth(), bmp.GetHeight());
    else
        // this is completely arbitrary
        best = wxSize(16, 16);
    CacheBestSize(best);
    return best;
}

#endif // wxUSE_STATBMP

#endif // wxUSE_CONTROLS