added an error message if a bitmap can't be addedto the image list

[wxWidgets.git] / src / motif / button.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        button.cpp
// Purpose:     wxButton
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
#pragma implementation "button.h"
#endif

#include "wx/button.h"
#include "wx/utils.h"

#include <Xm/PushBG.h>
#include <Xm/PushB.h>

#include "wx/motif/private.h"

void wxButtonCallback (Widget w, XtPointer clientData, XtPointer ptr);

#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxButton, wxControl)
#endif

// Button

bool wxButton::Create(wxWindow *parent, wxWindowID id, const wxString& label,
           const wxPoint& pos,
           const wxSize& size, long style,
           const wxValidator& validator,
           const wxString& name)
{
    SetName(name);
    SetValidator(validator);
    m_windowStyle = style;
    m_backgroundColour = parent->GetBackgroundColour();
    m_foregroundColour = parent->GetForegroundColour();
    m_windowFont = parent->GetFont();

    parent->AddChild((wxButton *)this);

    if (id == -1)
        m_windowId = NewControlId();
    else
        m_windowId = id;

    wxString label1(wxStripMenuCodes(label));

    XmString text = XmStringCreateSimple ((char*) (const char*) label1);
    Widget parentWidget = (Widget) parent->GetClientWidget();

    XmFontList fontList = (XmFontList) m_windowFont.GetFontList(1.0, XtDisplay(parentWidget));

    /*
     * Patch Note (important)
     * There is no major reason to put a defaultButtonThickness here.
     * Not requesting it give the ability to put wxButton with a spacing
     * as small as requested. However, if some button become a DefaultButton,
     * other buttons are no more aligned -- This is why we set
     * defaultButtonThickness of ALL buttons belonging to the same wxPanel,
     * in the ::SetDefaultButton method.
     */
    m_mainWidget = (WXWidget) XtVaCreateManagedWidget ("button",
                                        xmPushButtonWidgetClass,
						 parentWidget,
                                                 XmNfontList, fontList,
						 XmNlabelString, text,
//                  XmNdefaultButtonShadowThickness, 1, // See comment for wxButton::SetDefault
						 NULL);

    XmStringFree (text);

    XtAddCallback ((Widget) m_mainWidget, XmNactivateCallback, (XtCallbackProc) wxButtonCallback,
            (XtPointer) this);

    SetCanAddEventHandler(TRUE);
    AttachWidget (parent, m_mainWidget, (WXWidget) NULL, pos.x, pos.y, size.x, size.y);

    ChangeBackgroundColour();

    return TRUE;
}

void wxButton::SetDefault()
{
    wxWindow *parent = (wxWindow *)GetParent();
    if (parent)
        parent->SetDefaultItem(this);

  // We initially do not set XmNdefaultShadowThickness, to have small buttons.
  // Unfortunately, buttons are now mis-aligned. We try to correct this
  // now -- setting this ressource to 1 for each button in the same row.
  // Because it's very hard to find wxButton in the same row,
  // correction is straighforward: we set resource for all wxButton
  // in this parent (but not sub panels)
  for (wxNode * node = parent->GetChildren().First (); node; node = node->Next ())
    {
      wxButton *item = (wxButton *) node->Data ();
      if (item->IsKindOf(CLASSINFO(wxButton)))
	{
          bool managed = XtIsManaged((Widget) item->GetMainWidget());
          if (managed)
            XtUnmanageChild ((Widget) item->GetMainWidget());

	  XtVaSetValues ((Widget) item->GetMainWidget(),
			 XmNdefaultButtonShadowThickness, 1,
			 NULL);

          if (managed)
            XtManageChild ((Widget) item->GetMainWidget());
	}
    }				// while

//  XtVaSetValues((Widget)handle, XmNshowAsDefault, 1, NULL);
  XtVaSetValues ((Widget) parent->GetMainWidget(), XmNdefaultButton, (Widget) GetMainWidget(), NULL);
}

void wxButton::Command (wxCommandEvent & event)
{
    ProcessCommand (event);
}

void wxButtonCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
{
  if (!wxGetWindowFromTable(w))
    // Widget has been deleted!
    return;

  wxButton *item = (wxButton *) clientData;
  wxCommandEvent event (wxEVT_COMMAND_BUTTON_CLICKED, item->GetId());
  event.SetEventObject(item);
  item->ProcessCommand (event);
}

void wxButton::ChangeFont(bool keepOriginalSize)
{
    wxWindow::ChangeFont(keepOriginalSize);
}

void wxButton::ChangeBackgroundColour()
{
    DoChangeBackgroundColour(m_mainWidget, m_backgroundColour, TRUE);
}

void wxButton::ChangeForegroundColour()
{
    wxWindow::ChangeForegroundColour();
}