guard against nullptr

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

diff --git a/src/os2/brush.cpp b/src/os2/brush.cpp
index 4f28e92f53475598e8fb475fd7b1a0d387d7e90d..fdb3f5350296a30a4336947c9e3351652892f05d 100644 (file)
--- a/src/os2/brush.cpp
+++ b/src/os2/brush.cpp
@@ -1,140 +1,385 @@
 /////////////////////////////////////////////////////////////////////////////
 /////////////////////////////////////////////////////////////////////////////

-// Name:        brush.cpp
+// Name:        src/os2/brush.cpp

 // Purpose:     wxBrush
 // Purpose:     wxBrush

-// Author:      AUTHOR
+// Author:      David Webster

 // Modified by:
 // Modified by:

-// Created:     ??/??/98
+// Created:     10/13/99

 // RCS-ID:      $Id$
 // RCS-ID:      $Id$

-// Copyright:   (c) AUTHOR
-// Licence:    wxWindows licence
+// Copyright:   (c) David Webster
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "brush.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+    #include <stdio.h>
+    #include "wx/list.h"
+    #include "wx/utils.h"
+    #include "wx/app.h"
+    #include "wx/brush.h"
+    #include "wx/log.h"

 #endif
 
 #endif
 

-#include "wx/setup.h"
-#include "wx/utils.h"
-#include "wx/brush.h"
+#include "wx/os2/private.h"
+
+class WXDLLEXPORT wxBrushRefData: public wxGDIRefData
+{
+    friend class WXDLLIMPEXP_FWD_CORE wxBrush;
+public:
+    wxBrushRefData(const wxColour& colour = wxNullColour, wxBrushStyle style = wxBRUSHSTYLE_SOLID);
+    wxBrushRefData(const wxBitmap& stipple);
+    wxBrushRefData(const wxBrushRefData& rData);
+    virtual ~wxBrushRefData();
+
+    bool operator == (const wxBrushRefData& data) const
+    {
+        return (m_nStyle == data.m_nStyle &&
+                m_vStipple.IsSameAs(data.m_vStipple) &&
+                m_vColour == data.m_vColour);
+    }
+
+protected:
+    wxBrushStyle m_nStyle;
+    wxBitmap     m_vStipple;
+    wxColour     m_vColour;
+    WXHBRUSH     m_hBrush; // in OS/2 GPI this will be the PS the pen is associated with
+    AREABUNDLE   m_vBundle;
+};
+
+#define M_BRUSHDATA ((wxBrushRefData *)m_refData)
+
+// ============================================================================
+// wxBrushRefData implementation
+// ============================================================================

 
 

-#if !USE_SHARED_LIBRARIES

 IMPLEMENT_DYNAMIC_CLASS(wxBrush, wxGDIObject)
 IMPLEMENT_DYNAMIC_CLASS(wxBrush, wxGDIObject)

-#endif

 
 

-wxBrushRefData::wxBrushRefData()
+// ----------------------------------------------------------------------------
+// wxBrushRefData ctors/dtor
+// ----------------------------------------------------------------------------
+
+wxBrushRefData::wxBrushRefData(const wxColour& colour, wxBrushStyle style)
+              : m_vColour(colour)

 {
 {

-    m_style = wxSOLID;
-// TODO: null data
-}
+    m_nStyle = style;
+    m_hBrush = 0;
+    memset(&m_vBundle, '\0', sizeof(AREABUNDLE));
+} // end of wxBrushRefData::wxBrushRefData

 
 

-wxBrushRefData::wxBrushRefData(const wxBrushRefData& data)
+wxBrushRefData::wxBrushRefData(const wxBitmap& stipple)

 {
 {

-  m_style = data.m_style;
-  m_stipple = data.m_stipple;
-  m_colour = data.m_colour;
-/* TODO: null data
-  m_hBrush = 0;
-*/
+    m_vStipple = stipple;
+    m_nStyle = stipple.GetMask() ? wxBRUSHSTYLE_STIPPLE_MASK_OPAQUE
+                                 : wxBRUSHSTYLE_STIPPLE;
+
+    m_hBrush = NULL;
+    memset(&m_vBundle, '\0', sizeof(AREABUNDLE));

 }
 
 }
 

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

 wxBrushRefData::~wxBrushRefData()
 {
 wxBrushRefData::~wxBrushRefData()
 {

-// TODO: delete data
-}
+} // end of wxBrushRefData::~wxBrushRefData
+
+// ============================================================================
+// wxBrush implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxBrush ctors/dtor
+// ----------------------------------------------------------------------------

 
 

-// Brushes

 wxBrush::wxBrush()
 {
 wxBrush::wxBrush()
 {

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

 
 wxBrush::~wxBrush()
 {
 
 wxBrush::~wxBrush()
 {

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

 
 

-wxBrush::wxBrush(const wxColour& col, int Style)
+wxBrush::wxBrush(
+  const wxColour&                   rColour
+, wxBrushStyle                      nStyle
+)

 {
 {

-    m_refData = new wxBrushRefData;
-
-    M_BRUSHDATA->m_colour = col;
-    M_BRUSHDATA->m_style = Style;
+    m_refData = new wxBrushRefData(rColour, nStyle);

 
     RealizeResource();
 
     RealizeResource();

+} // end of wxBrush::wxBrush
+
+#if FUTURE_WXWIN_COMPATIBILITY_3_0
+wxBrush::wxBrush(const wxColour& col, int style)
+{
+    m_refData = new wxBrushRefData(col, (wxBrushStyle)style);

 
 

-    if ( wxTheBrushList )
-        wxTheBrushList->AddBrush(this);
+    RealizeResource();

 }
 }

+#endif

 
 

-wxBrush::wxBrush(const wxBitmap& stipple)
+wxBrush::wxBrush(const wxBitmap& rStipple)

 {
 {

-    m_refData = new wxBrushRefData;
-
-    M_BRUSHDATA->m_style = wxSTIPPLE;
-    M_BRUSHDATA->m_stipple = stipple;
+    m_refData = new wxBrushRefData(rStipple);

 
     RealizeResource();
 
     RealizeResource();

+} // end of wxBrush::wxBrush

 
 

-    if ( wxTheBrushList )
-        wxTheBrushList->AddBrush(this);
-}
-
-void wxBrush::Unshare()
+bool wxBrush::RealizeResource()

 {
 {

-       // Don't change shared data
-       if (!m_refData)
+    bool     bOk;
+    ERRORID  vError;
+    wxString sError;
+
+    if (M_BRUSHDATA && M_BRUSHDATA->m_hBrush == 0L)

     {
     {

-               m_refData = new wxBrushRefData();
-       }
-    else
+        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)

     {
     {

-               wxBrushRefData* ref = new wxBrushRefData(*(wxBrushRefData*)m_refData);
-               UnRef();
-               m_refData = ref;
-       }
-}
+        //
+        // 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(wxT("Unable to set current color table to RGB mode. Error: %s\n"), sError.c_str());
+            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;

 
 

-void wxBrush::SetColour(const wxColour& col)
+            case wxVERTICAL_HATCH:
+                M_BRUSHDATA->m_vBundle.usSymbol = PATSYM_VERT;
+                break;
+
+            case wxSTIPPLE:
+                if (M_BRUSHDATA->m_vStipple.IsOk())
+                {
+                    ::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 = (bool)::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
+                                  ,ABB_SET | ABB_SYMBOL | ABB_REF_POINT
+                                  ,&M_BRUSHDATA->m_vBundle
+                                 );
+        if (!bOk)
+        {
+            vError = ::WinGetLastError(vHabmain);
+            sError = wxPMErrorToStr(vError);
+            wxLogError(wxT("Can't set Gpi attributes for an AREABUNDLE. Error: %s\n"), sError.c_str());
+        }
+        return bOk;
+    }
+    return false;
+} // end of wxBrush::RealizeResource
+
+// ----------------------------------------------------------------------------
+// wxBrush accessors
+// ----------------------------------------------------------------------------
+
+wxColour wxBrush::GetColour() const

 {
 {

-    Unshare();
+    wxCHECK_MSG( IsOk(), wxNullColour, wxT("invalid brush") );

 
 

-    M_BRUSHDATA->m_colour = col;
+    return M_BRUSHDATA->m_vColour;
+}

 
 

-    RealizeResource();
+wxBrushStyle wxBrush::GetStyle() const
+{
+    wxCHECK_MSG( IsOk(), wxBRUSHSTYLE_INVALID, wxT("invalid brush") );
+
+    return M_BRUSHDATA->m_nStyle;

 }
 
 }
 

-void wxBrush::SetColour(unsigned char r, unsigned char g, unsigned char b)
+wxBitmap *wxBrush::GetStipple() const

 {
 {

-    Unshare();
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid brush") );

 
 

-    M_BRUSHDATA->m_colour.Set(r, g, b);
+    return &(M_BRUSHDATA->m_vStipple);
+}

 
 

-    RealizeResource();
+int wxBrush::GetPS() const
+{
+    wxCHECK_MSG( IsOk(), 0, wxT("invalid brush") );
+
+    return M_BRUSHDATA->m_hBrush;

 }
 
 }
 

-void wxBrush::SetStyle(int Style)
+WXHANDLE wxBrush::GetResourceHandle() const

 {
 {

-    Unshare();
+    wxCHECK_MSG( IsOk(), 0, wxT("invalid brush") );
+
+    return (WXHANDLE)M_BRUSHDATA->m_hBrush;
+} // end of wxBrush::GetResourceHandle

 
 

-    M_BRUSHDATA->m_style = Style;
+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

 
 

+// ----------------------------------------------------------------------------
+// wxBrush setters
+// ----------------------------------------------------------------------------
+
+void wxBrush::SetColour( const wxColour& rColour )
+{
+    AllocExclusive();
+    M_BRUSHDATA->m_vColour = rColour;

     RealizeResource();
 }
 
     RealizeResource();
 }
 

-void wxBrush::SetStipple(const wxBitmap& Stipple)
+void wxBrush::SetColour(unsigned char cRed, unsigned char cGreen, unsigned char cBlue)

 {
 {

-    Unshare();
+    AllocExclusive();
+    M_BRUSHDATA->m_vColour.Set( cRed, cGreen, cBlue );
+    RealizeResource();
+} // end of wxBrush::SetColour

 
 

-    M_BRUSHDATA->m_stipple = Stipple;
+void wxBrush::SetStyle(wxBrushStyle nStyle)
+{
+    AllocExclusive();
+    M_BRUSHDATA->m_nStyle = nStyle;
+    RealizeResource();
+} // end of wxBrush::SetStyle

 
 

+void wxBrush::SetStipple(
+  const wxBitmap&                   rStipple
+)
+{
+    AllocExclusive();
+    M_BRUSHDATA->m_vStipple = rStipple;

     RealizeResource();
     RealizeResource();

-}
+} // end of wxBrush::SetStipple

 
 

-bool wxBrush::RealizeResource()
+void wxBrush::SetPS(
+  HPS                               hPS
+)
+{
+    AllocExclusive();
+    if (M_BRUSHDATA->m_hBrush)
+        ::GpiDestroyPS(M_BRUSHDATA->m_hBrush);
+    M_BRUSHDATA->m_hBrush = hPS;
+    RealizeResource();
+} // end of WxWinGdi_CPen::SetPS
+
+// ----------------------------------------------------------------------------
+// wxBrush house keeping stuff
+// ----------------------------------------------------------------------------
+
+bool wxBrush::operator == (
+    const wxBrush& brush
+) const

 {
 {

-// TODO: create the brush
-    return FALSE;
+    if (m_refData == brush.m_refData) return true;
+
+    if (!m_refData || !brush.m_refData) return false;
+
+    return ( *(wxBrushRefData*)m_refData == *(wxBrushRefData*)brush.m_refData );
+} // end of wxBrush::operator ==
+
+wxGDIRefData *wxBrush::CreateGDIRefData() const
+{
+    return new wxBrushRefData;

 }
 
 }
 

+wxGDIRefData *wxBrush::CloneGDIRefData(const wxGDIRefData *data) const
+{
+    return new wxBrushRefData(*(const wxBrushRefData *)data);
+}