Don't create a bitmap with dimensions <= 0...

[wxWidgets.git] / src / os2 / brush.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        brush.cpp
// Purpose:     wxBrush
// 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"

#ifndef WX_PRECOMP
#include <stdio.h>
#include "wx/setup.h"
#include "wx/list.h"
#include "wx/utils.h"
#include "wx/app.h"
#include "wx/brush.h"
#endif

#include "wx/os2/private.h"

#include "assert.h"

IMPLEMENT_DYNAMIC_CLASS(wxBrush, wxGDIObject)

wxBrushRefData::wxBrushRefData()
{
    m_nStyle = wxSOLID;
    m_hBrush = 0;
    memset(&m_vBundle, '\0', sizeof(AREABUNDLE));
} // end of wxBrushRefData::wxBrushRefData

wxBrushRefData::wxBrushRefData(
  const wxBrushRefData&             rData
)
{
    m_nStyle   = rData.m_nStyle;
    m_vStipple = rData.m_vStipple;
    m_vColour  = rData.m_vColour;
    m_hBrush   = 0;
    memcpy(&m_vBundle, &rData.m_vBundle, sizeof(AREABUNDLE));
} // end of wxBrushRefData::wxBrushRefData

wxBrushRefData::~wxBrushRefData()
{
} // end of wxBrushRefData::~wxBrushRefData

//
// Brushes
//
wxBrush::wxBrush()
{
    if ( wxTheBrushList )
        wxTheBrushList->AddBrush(this);
} // end of wxBrush::wxBrush

wxBrush::~wxBrush()
{
    if ( wxTheBrushList )
        wxTheBrushList->RemoveBrush(this);
} // end of wxBrush::~wxBrush

wxBrush::wxBrush(
  const wxColour&                   rColour
, int                               nStyle
)
{
    m_refData = new wxBrushRefData;

    M_BRUSHDATA->m_vColour = rColour;
    M_BRUSHDATA->m_nStyle  = nStyle;
    M_BRUSHDATA->m_hBrush  = 0;
    memset(&M_BRUSHDATA->m_vBundle, '\0', sizeof(AREABUNDLE));

    RealizeResource();

    if ( wxTheBrushList )
        wxTheBrushList->AddBrush(this);
} // end of wxBrush::wxBrush

wxBrush::wxBrush(
  const wxBitmap&                   rStipple
)
{
    m_refData = new wxBrushRefData;

    M_BRUSHDATA->m_nStyle   = wxSTIPPLE;
    M_BRUSHDATA->m_vStipple = rStipple;
    M_BRUSHDATA->m_hBrush  = 0;
    memset(&M_BRUSHDATA->m_vBundle, '\0', sizeof(AREABUNDLE));

    RealizeResource();

    if ( wxTheBrushList )
        wxTheBrushList->AddBrush(this);
} // end of wxBrush::wxBrush

bool wxBrush::RealizeResource()
{
    BOOL                            bOk;
    ERRORID                         vError;
    wxString                        sError;

    if (M_BRUSHDATA && M_BRUSHDATA->m_hBrush == 0L)
    {
        SIZEL                   vSize = {0, 0};
        DEVOPENSTRUC            vDop = {0L, "DISPLAY", NULL, 0L, 0L, 0L, 0L, 0L, 0L};
        HDC                     hDC = ::DevOpenDC( vHabmain
                                                  ,OD_MEMORY
                                                  ,"*"
                                                  ,5L
                                                  ,(PDEVOPENDATA)&vDop
                                                  ,NULLHANDLE
                                                 );
        M_BRUSHDATA->m_hBrush = (WXHPEN)::GpiCreatePS( vHabmain
                                                      ,hDC
                                                      ,&vSize
                                                      ,PU_PELS | GPIT_MICRO | GPIA_ASSOC
                                                     );
    }
    if (M_BRUSHDATA)
    {
        //
        // Set the color table to RGB mode
        //
        if (!::GpiCreateLogColorTable( (HPS)M_BRUSHDATA->m_hBrush
                                      ,0L
                                      ,LCOLF_RGB
                                      ,0L
                                      ,0L
                                      ,NULL
                                     ))
        {
            vError = ::WinGetLastError(vHabmain);
            sError = wxPMErrorToStr(vError);
            wxLogError("Unable to set current color table to RGB mode. Error: %s\n", sError);
            return FALSE;
        }

        if (M_BRUSHDATA->m_nStyle==wxTRANSPARENT)
        {
            return TRUE;
        }
        COLORREF                    vPmColour = 0L;

        vPmColour = M_BRUSHDATA->m_vColour.GetPixel() ;

        M_BRUSHDATA->m_vBundle.usSet = LCID_DEFAULT;
        switch (M_BRUSHDATA->m_nStyle)
        {
            case wxTRANSPARENT:
                M_BRUSHDATA->m_hBrush = NULL;  // Must always select a suitable background brush
                break;                         // - could choose white always for a quick solution

            case wxBDIAGONAL_HATCH:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_DIAG3;
                break;

            case wxCROSSDIAG_HATCH:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_DIAGHATCH;
                break;

            case wxFDIAGONAL_HATCH:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_DIAG1;
                break;

            case wxCROSS_HATCH:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_HATCH;
                break;

            case wxHORIZONTAL_HATCH:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_HORIZ;
                break;

            case wxVERTICAL_HATCH:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_VERT;
                break;

            case wxSTIPPLE:
                if (M_BRUSHDATA->m_vStipple.Ok())
                {
                    ::GpiSetBitmapId( M_BRUSHDATA->m_hBrush
                                     ,(USHORT)M_BRUSHDATA->m_vStipple.GetHBITMAP()
                                     ,(USHORT)M_BRUSHDATA->m_vStipple.GetId()
                                    );
                    ::GpiSetPatternSet( M_BRUSHDATA->m_hBrush
                                       ,(USHORT)M_BRUSHDATA->m_vStipple.GetId()
                                      );
                }
                else
                    M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_SOLID;
                break ;

            case wxSOLID:
            default:
                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_SOLID;
                break;
        }
#ifdef WXDEBUG_CREATE
        if (M_BRUSHDATA->m_hBrush==NULL) wxError("Cannot create brush","Internal error") ;
#endif
        M_BRUSHDATA->m_vBundle.lColor        = vPmColour;
        M_BRUSHDATA->m_vBundle.lBackColor    = RGB_WHITE;
        M_BRUSHDATA->m_vBundle.usMixMode     = FM_OVERPAINT;
        M_BRUSHDATA->m_vBundle.usBackMixMode = BM_OVERPAINT;

        bOk = ::GpiSetAttrs( M_BRUSHDATA->m_hBrush
                            ,PRIM_AREA
                            ,ABB_COLOR | ABB_BACK_COLOR | ABB_MIX_MODE | ABB_BACK_MIX_MODE |
                             ABB_SET | ABB_SYMBOL
                            ,ABB_REF_POINT
                            ,&M_BRUSHDATA->m_vBundle
                           );
        if (!bOk)
        {
            vError = ::WinGetLastError(vHabmain);
            sError = wxPMErrorToStr(vError);
            wxLogError("Can't set Gpi attributes for an AREABUNDLE. Error: %s\n", sError);
        }
        return bOk;
    }
    return FALSE;
} // end of wxBrush::RealizeResource

WXHANDLE wxBrush::GetResourceHandle()
{
    if (!M_BRUSHDATA)
        return 0;
    return (WXHANDLE)M_BRUSHDATA->m_hBrush;
} // end of wxBrush::GetResourceHandle

bool wxBrush::FreeResource(
  bool                              WXUNUSED(bForce)
)
{
    if (M_BRUSHDATA && (M_BRUSHDATA->m_hBrush != 0))
    {
        M_BRUSHDATA->m_hBrush = 0;
        return TRUE;
    }
    else return FALSE;
} // end of wxBrush::FreeResource

bool wxBrush::IsFree() const
{
  return (M_BRUSHDATA && (M_BRUSHDATA->m_hBrush == 0));
} // end of wxBrush::IsFree

void wxBrush::Unshare()
{
    //
    // Don't change shared data
    //
    if (!m_refData)
    {
        m_refData = new wxBrushRefData();
    }
    else
    {
        wxBrushRefData* ref = new wxBrushRefData(*(wxBrushRefData*)m_refData);
        UnRef();
        m_refData = ref;
    }
} // end of wxBrush::Unshare

void wxBrush::SetColour(
  const wxColour&                   rColour
)
{
    Unshare();
    M_BRUSHDATA->m_vColour = rColour;
    RealizeResource();
}

void wxBrush::SetColour(
  unsigned char                     cRed
, unsigned char                     cGreen
, unsigned char                     cBlue
)
{
    Unshare();
    M_BRUSHDATA->m_vColour.Set( cRed
                               ,cGreen
                               ,cBlue
                              );
    RealizeResource();
} // end of wxBrush::SetColour

void wxBrush::SetStyle(
  int                               nStyle
)
{
    Unshare();
    M_BRUSHDATA->m_nStyle = nStyle;
    RealizeResource();
} // end of wxBrush::SetStyle

void wxBrush::SetStipple(
  const wxBitmap&                   rStipple
)
{
    Unshare();
    M_BRUSHDATA->m_vStipple = rStipple;
    RealizeResource();
} // end of wxBrush::SetStipple

void wxBrush::SetPS(
  HPS                               hPS
)
{
    Unshare();
    if (M_BRUSHDATA->m_hBrush)
        ::GpiDestroyPS(M_BRUSHDATA->m_hBrush);
    M_BRUSHDATA->m_hBrush = hPS;
    RealizeResource();
} // end of WxWinGdi_CPen::SetPS