X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8f7b34a878bbcb2f71a0c7694e2a3bec51460218..eea4d01c65f9b29baa1193db762b4c6b8144af24:/src/mgl/bitmap.cpp

diff --git a/src/mgl/bitmap.cpp b/src/mgl/bitmap.cpp
index 1e685b40ca..bae5a0c596 100644
--- a/src/mgl/bitmap.cpp
+++ b/src/mgl/bitmap.cpp
@@ -1,15 +1,11 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        bitmap.cpp
+// Name:        src/mgl/bitmap.cpp
 // Author:      Vaclav Slavik
 // RCS-ID:      $Id$
-// Copyright:   (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
+// Copyright:   (c) 2001-2002 SciTech Software, Inc. (www.scitechsoft.com)
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-#pragma implementation "bitmap.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -18,139 +14,145 @@
 #endif
 
 #include "wx/bitmap.h"
-#include "wx/icon.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/intl.h"
+    #include "wx/log.h"
+    #include "wx/utils.h"
+    #include "wx/dcmemory.h"
+    #include "wx/icon.h"
+    #include "wx/image.h"
+#endif
+
 #include "wx/filefn.h"
-#include "wx/image.h"
-#include "wx/dcmemory.h"
-#include "wx/utils.h"
-#include "wx/log.h"
-#include "wx/intl.h"
-#include "wx/image.h"
 #include "wx/xpmdecod.h"
 
 #include "wx/mgl/private.h"
 
 #include <mgraph.hpp>
 
+static bitmap_t *MyMGL_createBitmap(int width, int height,
+                                    int bpp, pixel_format_t *pf)
+{
+    MGLMemoryDC mdc(width, height, bpp, pf);
+    return MGL_getBitmapFromDC(mdc.getDC(), 0, 0, width, height, TRUE);
+}
+
 //-----------------------------------------------------------------------------
 // MGL pixel formats:
 //-----------------------------------------------------------------------------
 
 static pixel_format_t gs_pixel_format_15 =
-	{0x1F,0x0A,3, 0x1F,0x05,3, 0x1F,0x00,3, 0x01,0x0F,7}; // 555 15bpp
-    
+    {0x1F,0x0A,3, 0x1F,0x05,3, 0x1F,0x00,3, 0x01,0x0F,7}; // 555 15bpp
+
 static pixel_format_t gs_pixel_format_16 =
-	{0x1F,0x0B,3, 0x3F,0x05,2, 0x1F,0x00,3, 0x00,0x00,0}; // 565 16bpp
+    {0x1F,0x0B,3, 0x3F,0x05,2, 0x1F,0x00,3, 0x00,0x00,0}; // 565 16bpp
 
 static pixel_format_t gs_pixel_format_24 =
-	{0xFF,0x10,0, 0xFF,0x08,0, 0xFF,0x00,0, 0x00,0x00,0}; // RGB 24bpp
+    {0xFF,0x10,0, 0xFF,0x08,0, 0xFF,0x00,0, 0x00,0x00,0}; // RGB 24bpp
 
 static pixel_format_t gs_pixel_format_32 =
-	{0xFF,0x18,0, 0xFF,0x10,0, 0xFF,0x08,0, 0xFF,0x00,0}; // RGBA 32bpp
-
-// FIXME_MGL -- these formats will probably have to go into another place,
-//              where wxApp could use them to initialize g_displayDC
+    {0xFF,0x18,0, 0xFF,0x10,0, 0xFF,0x08,0, 0xFF,0x00,0}; // RGBA 32bpp
 
+static pixel_format_t gs_pixel_format_wxImage =
+    {0xFF,0x00,0, 0xFF,0x08,0, 0xFF,0x10,0, 0x00,0x00,0}; // RGB 24bpp for wxImage
 
 //-----------------------------------------------------------------------------
-// wxMask
+// wxBitmapRefData
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxMask,wxObject)
-
-wxMask::wxMask()
+class wxBitmapRefData: public wxGDIRefData
 {
-    m_bitmap = NULL;
-}
+public:
+    wxBitmapRefData();
+    wxBitmapRefData(int width, int height, int bpp);
+    wxBitmapRefData(const wxBitmapRefData& data);
+    virtual ~wxBitmapRefData();
 
-wxMask::wxMask(const wxBitmap& bitmap, const wxColour& colour)
-{
-    m_bitmap = NULL;
-    Create(bitmap, colour);
-}
+    virtual bool IsOk() const { return m_bitmap != NULL; }
 
-wxMask::wxMask(const wxBitmap& bitmap, int paletteIndex)
-{
-    m_bitmap = NULL;
-    Create(bitmap, paletteIndex);
-}
+    int             m_width;
+    int             m_height;
+    int             m_bpp;
+    wxPalette      *m_palette;
+    wxMask         *m_mask;
+    bitmap_t       *m_bitmap;
 
-wxMask::wxMask(const wxBitmap& bitmap)
-{
-    m_bitmap = NULL;
-    Create(bitmap);
-}
+private:
+    void DoCreateBitmap(int width, int height, int depth);
+};
 
-wxMask::~wxMask()
+void wxBitmapRefData::DoCreateBitmap(int width, int height, int depth)
 {
-    delete m_bitmap;
-}
+    m_width = width;
+    m_height = height;
+    m_bpp = depth;
 
-bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
-{
-    delete m_bitmap;
-    m_bitmap = NULL;
+    pixel_format_t pf_dummy;
+    pixel_format_t *pf;
+    int mglDepth = depth;
+
+    switch ( depth )
+    {
+        case -1:
+            wxASSERT_MSG( g_displayDC, wxT("MGL display DC not created yet.") );
 
-    wxImage image = bitmap.ConvertToImage().ConvertToMono(
-                                colour.Red(), colour.Green(), colour.Blue());
-    if ( !image.Ok() ) return FALSE;
-    
-    m_bitmap = new wxBitmap(image, 1);
+            g_displayDC->getPixelFormat(pf_dummy);
+            mglDepth = g_displayDC->getBitsPerPixel();
+            pf = &pf_dummy;
+            break;
+        case 1:
+        case 8:
+            pf = NULL;
+            mglDepth = 8; // we emulate monochrome bitmaps using 8 bit ones
+            break;
+        case 15:
+            pf = &gs_pixel_format_15;
+            break;
+        case 16:
+            pf = &gs_pixel_format_16;
+            break;
+        case 24:
+            pf = &gs_pixel_format_24;
+            break;
+        case 32:
+            pf = &gs_pixel_format_32;
+            break;
+        default:
+            wxFAIL_MSG(wxT("invalid bitmap depth"));
+            m_bitmap = NULL;
+            return;
+    }
 
-    return m_bitmap->Ok();
+    m_bitmap = MyMGL_createBitmap(width, height, mglDepth, pf);
 }
 
-bool wxMask::Create(const wxBitmap& bitmap, int paletteIndex)
+wxBitmapRefData::wxBitmapRefData()
 {
-    unsigned char r,g,b;
-    wxPalette *pal = bitmap.GetPalette();
+    m_width =
+    m_height =
+    m_bpp = 0;
 
-    wxCHECK_MSG( pal, FALSE, wxT("Cannot create mask from bitmap without palette") );
-    
-    pal->GetRGB(paletteIndex, &r, &g, &b);
+    m_palette = NULL;
+    m_mask = NULL;
 
-    return Create(bitmap, wxColour(r, g, b));
+    m_bitmap = NULL;
 }
 
-bool wxMask::Create(const wxBitmap& bitmap)
+wxBitmapRefData::wxBitmapRefData(int width, int height, int bpp)
 {
-    delete m_bitmap;
-    m_bitmap = NULL;
-
-    wxCHECK_MSG( bitmap.Ok(), FALSE, wxT("Invalid bitmap") );
-    wxCHECK_MSG( bitmap.GetDepth() == 1, FALSE, wxT("Cannot create mask from colour bitmap") );
+    DoCreateBitmap(width, height, bpp);
 
-    m_bitmap = new wxBitmap(bitmap);
-    return TRUE;
+    m_palette = NULL;
+    m_mask = NULL;
 }
 
-
-//-----------------------------------------------------------------------------
-// wxBitmap
-//-----------------------------------------------------------------------------
-
-class wxBitmapRefData: public wxObjectRefData
+wxBitmapRefData::wxBitmapRefData(const wxBitmapRefData& data)
 {
-public:
-    wxBitmapRefData();
-    ~wxBitmapRefData();
+    DoCreateBitmap(data.m_width, data.m_height, data.m_bpp);
 
-    int             m_width;
-    int             m_height;
-    int             m_bpp;
-    wxPalette      *m_palette;
-    wxMask         *m_mask;
-    bitmap_t       *m_bitmap;
-};
-
-wxBitmapRefData::wxBitmapRefData()
-{
-    m_mask = NULL;
-    m_width = 0;
-    m_height = 0;
-    m_bpp = 0;
-    m_palette = NULL;
-    m_bitmap = NULL;
+    m_palette = NULL; // FIXME: should copy
+    m_mask = NULL; // FIXME: should copy
 }
 
 wxBitmapRefData::~wxBitmapRefData()
@@ -161,142 +163,73 @@ wxBitmapRefData::~wxBitmapRefData()
     delete m_palette;
 }
 
+
+//-----------------------------------------------------------------------------
+// wxBitmap
 //-----------------------------------------------------------------------------
 
 #define M_BMPDATA ((wxBitmapRefData *)m_refData)
 
-
-IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler,wxObject)
 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxBitmapBase)
 
-wxBitmap::wxBitmap()
+wxGDIRefData *wxBitmap::CreateGDIRefData() const
 {
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
+    return new wxBitmapRefData;
 }
 
-wxBitmap::wxBitmap(int width, int height, int depth)
-{
-    Create(width, height, depth);
-
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
-}
-
-
-static bitmap_t *MyMGL_createBitmap(int width, int height, 
-                                    int bpp, pixel_format_t *pf)
+wxGDIRefData *wxBitmap::CloneGDIRefData(const wxGDIRefData *data) const
 {
-    MGLMemoryDC mdc(width, height, bpp, pf);
-    return MGL_getBitmapFromDC(mdc.getDC(), 0, 0, width, height, TRUE);
+    return new wxBitmapRefData(*static_cast<const wxBitmapRefData *>(data));
 }
 
 bool wxBitmap::Create(int width, int height, int depth)
 {
     UnRef();
 
-    wxCHECK_MSG( (width > 0) && (height > 0), FALSE, wxT("invalid bitmap size") )
-    
-    pixel_format_t pf_dummy, *pf;
-    int mglDepth = depth;
-
-    switch ( depth )
-    {
-        case -1:
-            wxASSERT_MSG( g_displayDC, wxT("MGL display DC not created yet.") );
-
-            g_displayDC->getPixelFormat(pf_dummy);
-            mglDepth = g_displayDC->getBitsPerPixel();                
-            pf = &pf_dummy;
-            break;
-        case 1:
-        case 8:
-            pf = NULL;
-            break;
-        case 15:
-            pf = &gs_pixel_format_15;
-            break;
-        case 16:
-            pf = &gs_pixel_format_16;
-            break;
-        case 24:
-            pf = &gs_pixel_format_24;
-            break;
-        case 32:
-            pf = &gs_pixel_format_32;
-            break;
-        default:
-            wxASSERT_MSG( 0, wxT("invalid bitmap depth") );
-            return FALSE;
-            break;
-    }
+    wxCHECK_MSG( (width > 0) && (height > 0), false, wxT("invalid bitmap size") );
 
-    m_refData = new wxBitmapRefData();
-    M_BMPDATA->m_mask = (wxMask *) NULL;
-    M_BMPDATA->m_palette = (wxPalette *) NULL;
-    M_BMPDATA->m_width = width;
-    M_BMPDATA->m_height = height;
-    M_BMPDATA->m_bpp = mglDepth;
+    m_refData = new wxBitmapRefData(width, height, depth);
 
-    if ( mglDepth != 1 )
-    {
-        M_BMPDATA->m_bitmap = MyMGL_createBitmap(width, height, mglDepth, pf);
-    }
-    else
+    if ( depth == 1 )
     {
         // MGL does not support mono DCs, so we have to emulate them with
         // 8bpp ones. We do that by using a special palette with color 0
-        // set to black and all other colors set to white. 
-
-        M_BMPDATA->m_bitmap = MyMGL_createBitmap(width, height, 8, pf);
+        // set to black and all other colors set to white.
         SetMonoPalette(wxColour(255, 255, 255), wxColour(0, 0, 0));
     }
 
-    return Ok();
-}
-
-bool wxBitmap::CreateFromXpm(const char **bits)
-{
-    wxCHECK_MSG( bits != NULL, FALSE, wxT("invalid bitmap data") )
-    
-    wxXPMDecoder decoder;
-    wxImage img = decoder.ReadData(bits);
-    wxCHECK_MSG( img.Ok(), FALSE, wxT("invalid bitmap data") )
-    
-    *this = wxBitmap(img);
-    
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
-
-    return TRUE;
+    return IsOk();
 }
 
-wxBitmap::wxBitmap(const wxImage& image, int depth = -1)
+wxBitmap::wxBitmap(const wxImage& image, int depth)
 {
     long width, height;
 
-    wxCHECK_RET( image.Ok(), wxT("invalid image") )
-    
+    wxCHECK_RET( image.IsOk(), wxT("invalid image") );
+
     width = image.GetWidth();
     height = image.GetHeight();
 
     if ( !Create(width, height, depth) ) return;
-    
-    MGLMemoryDC idc(width, height, 24, &gs_pixel_format_24,
+
+    MGLMemoryDC idc(width, height, 24, &gs_pixel_format_wxImage,
                     width * 3, (void*)image.GetData(), NULL);
     wxASSERT_MSG( idc.isValid(), wxT("cannot create custom MGLDC") );
 
     MGLDevCtx *bdc = CreateTmpDC();
 
-    if ( depth <= 8 && image.HasPalette() )
+    if ( GetDepth() <= 8 && image.HasPalette() )
         SetPalette(image.GetPalette());
 
     bdc->bitBlt(idc, 0, 0, width, height, 0, 0, MGL_REPLACE_MODE);
     delete bdc;
-                               
+
     if ( image.HasMask() )
     {
         wxImage mask_image = image.ConvertToMono(image.GetMaskRed(),
                                                  image.GetMaskGreen(),
                                                  image.GetMaskBlue());
-        mask_image.SetMask(FALSE);
+        mask_image.SetMask(false);
         wxBitmap mask_bmp(mask_image, 1);
         SetMask(new wxMask(mask_bmp));
     }
@@ -304,22 +237,22 @@ wxBitmap::wxBitmap(const wxImage& image, int depth = -1)
 
 wxImage wxBitmap::ConvertToImage() const
 {
-    wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), wxImage(), wxT("invalid bitmap") );
 
-    long width, height;
+    int width, height;
     width = GetWidth();
     height = GetHeight();
-    
+
     wxImage image(width, height);
-    wxASSERT_MSG( image.Ok(), wxT("cannot create image") );
-    
-    MGLMemoryDC idc(width, height, 24, &gs_pixel_format_24,
+    wxASSERT_MSG( image.IsOk(), wxT("cannot create image") );
+
+    MGLMemoryDC idc(width, height, 24, &gs_pixel_format_wxImage,
                     width * 3, (void*)image.GetData(), NULL);
     wxASSERT_MSG( idc.isValid(), wxT("cannot create custom MGLDC") );
 
     if ( M_BMPDATA->m_palette )
         image.SetPalette(*(M_BMPDATA->m_palette));
-        
+
     if ( GetMask() )
     {
         // in consistency with other ports, we convert parts covered
@@ -328,35 +261,26 @@ wxImage wxBitmap::ConvertToImage() const
         // bg colour set to black and fg colour to <16,16,16>
 
         image.SetMaskColour(16, 16, 16);
-        image.SetMask(TRUE);      
+        image.SetMask(true);
 
         wxDC tmpDC;
-        tmpDC.SetMGLDC(&idc, FALSE);
+        tmpDC.SetMGLDC(&idc, false);
         tmpDC.SetBackground(wxBrush(wxColour(16,16,16), wxSOLID));
         tmpDC.Clear();
-        tmpDC.DrawBitmap(*this, 0, 0, TRUE);
+        tmpDC.DrawBitmap(*this, 0, 0, true);
     }
     else
     {
-        image.SetMask(FALSE);
+        image.SetMask(false);
         idc.putBitmap(0, 0, M_BMPDATA->m_bitmap, MGL_REPLACE_MODE);
     }
 
     return image;
 }
 
-wxBitmap::wxBitmap(const wxBitmap& bmp)
-{
-    Ref(bmp);
-
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
-}
-
 wxBitmap::wxBitmap(const wxString &filename, wxBitmapType type)
 {
     LoadFile(filename, type);
-
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
 }
 
 wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
@@ -371,69 +295,41 @@ wxBitmap::wxBitmap(const char bits[], int width, int height, int depth)
     bdc->clearDevice();
     bdc->putMonoImage(0, 0, width, (width + 7) / 8, height, (void*)bits);
     delete bdc;
-
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
-}
-
-wxBitmap::~wxBitmap()
-{
-    if ( wxTheBitmapList ) wxTheBitmapList->DeleteObject(this);
-}
-
-wxBitmap& wxBitmap::operator = (const wxBitmap& bmp)
-{
-    if ( *this == bmp ) return (*this);
-    Ref(bmp);
-    return *this;
-}
-
-bool wxBitmap::operator == (const wxBitmap& bmp) const
-{
-    return (m_refData == bmp.m_refData);
-}
-
-bool wxBitmap::operator != (const wxBitmap& bmp) const
-{
-    return (m_refData != bmp.m_refData);
-}
-
-bool wxBitmap::Ok() const
-{
-    return (m_refData != NULL && M_BMPDATA->m_bitmap != NULL);
 }
 
 int wxBitmap::GetHeight() const
 {
-    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
 
     return M_BMPDATA->m_height;
 }
 
 int wxBitmap::GetWidth() const
 {
-    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
 
     return M_BMPDATA->m_width;
 }
 
 int wxBitmap::GetDepth() const
 {
-    wxCHECK_MSG( Ok(), -1, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), -1, wxT("invalid bitmap") );
 
     return M_BMPDATA->m_bpp;
 }
 
 wxMask *wxBitmap::GetMask() const
 {
-    wxCHECK_MSG( Ok(), (wxMask *) NULL, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
 
     return M_BMPDATA->m_mask;
 }
 
 void wxBitmap::SetMask(wxMask *mask)
 {
-    wxCHECK_RET( Ok(), wxT("invalid bitmap") );
+    wxCHECK_RET( IsOk(), wxT("invalid bitmap") );
 
+    AllocExclusive();
     delete M_BMPDATA->m_mask;
     M_BMPDATA->m_mask = mask;
 }
@@ -442,31 +338,31 @@ bool wxBitmap::CopyFromIcon(const wxIcon& icon)
 {
     wxBitmap *bmp = (wxBitmap*)(&icon);
     *this = *bmp;
-    return TRUE;
+    return true;
 }
 
 wxBitmap wxBitmap::GetSubBitmap(const wxRect& rect) const
 {
-    wxCHECK_MSG( Ok() &&
+    wxCHECK_MSG( IsOk() &&
                  (rect.x >= 0) && (rect.y >= 0) &&
                  (rect.x+rect.width <= M_BMPDATA->m_width) && (rect.y+rect.height <= M_BMPDATA->m_height),
                  wxNullBitmap, wxT("invalid bitmap or bitmap region") );
 
     wxBitmap ret( rect.width, rect.height, M_BMPDATA->m_bpp );
-    wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
+    wxASSERT_MSG( ret.IsOk(), wxT("GetSubBitmap error") );
 
     if ( GetPalette() )
         ret.SetPalette(*GetPalette());
 
     MGLDevCtx *tdc = ret.CreateTmpDC();
-    tdc->putBitmapSection(rect.x, rect.y, 
+    tdc->putBitmapSection(rect.x, rect.y,
                           rect.x + rect.width, rect.y + rect.height,
                           0, 0, M_BMPDATA->m_bitmap, MGL_REPLACE_MODE);
     delete tdc;
 
     if ( GetMask() )
     {
-        wxBitmap submask = GetMask()->GetBitmap()->GetSubBitmap(rect);
+        wxBitmap submask = GetMask()->GetBitmap().GetSubBitmap(rect);
         ret.SetMask(new wxMask(submask));
     }
 
@@ -475,8 +371,9 @@ wxBitmap wxBitmap::GetSubBitmap(const wxRect& rect) const
 
 void wxBitmap::SetMonoPalette(const wxColour& fg, const wxColour& bg)
 {
-    wxCHECK_RET( Ok(), wxT("invalid bitmap") );
+    wxCHECK_RET( IsOk(), wxT("invalid bitmap") );
 
+    AllocExclusive();
     palette_t *mono = M_BMPDATA->m_bitmap->pal;
 
     wxCHECK_RET( M_BMPDATA->m_bpp == 1, wxT("bitmap is not 1bpp") );
@@ -497,92 +394,91 @@ void wxBitmap::SetMonoPalette(const wxColour& fg, const wxColour& bg)
 
 MGLDevCtx *wxBitmap::CreateTmpDC() const
 {
-    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
 
     MGLDevCtx *tdc = new MGLMemoryDC(GetWidth(), GetHeight(),
                                      M_BMPDATA->m_bitmap->bitsPerPixel,
                                      M_BMPDATA->m_bitmap->pf,
                                      M_BMPDATA->m_bitmap->bytesPerLine,
-                                     M_BMPDATA->m_bitmap->surface, 
+                                     M_BMPDATA->m_bitmap->surface,
                                      NULL);
     wxCHECK_MSG( tdc->isValid(), NULL, wxT("cannot create temporary MGLDC") );
 
     if ( M_BMPDATA->m_bitmap->pal != NULL )
     {
         int cnt;
-        
+
         switch (M_BMPDATA->m_bitmap->bitsPerPixel)
         {
             case  2: cnt = 2;   break;
             case  4: cnt = 16;  break;
             case  8: cnt = 256; break;
             default:
+                cnt = 0;
                 wxFAIL_MSG( wxT("bitmap with this depth cannot have palette") );
                 break;
         }
-        
+
         tdc->setPalette(M_BMPDATA->m_bitmap->pal, cnt, 0);
         tdc->realizePalette(cnt, 0, FALSE);
     }
-    
+
     return tdc;
 }
 
 bool wxBitmap::LoadFile(const wxString &name, wxBitmapType type)
 {
-    UnRef();
-    
-    if ( type == wxBITMAP_TYPE_BMP || type == wxBITMAP_TYPE_PNG || 
+    AllocExclusive();
+
+    if ( type == wxBITMAP_TYPE_BMP || type == wxBITMAP_TYPE_PNG ||
          type == wxBITMAP_TYPE_PCX || type == wxBITMAP_TYPE_JPEG )
     {
         // prevent accidental loading of bitmap from $MGL_ROOT:
         if ( !wxFileExists(name) )
         {
             wxLogError(_("File %s does not exist."), name.c_str());
-            return FALSE;
+            return false;
         }
     }
-        
+
     wxBitmapHandler *handler = FindHandler(type);
 
-    if ( handler == NULL ) 
+    if ( handler == NULL )
     {
         wxImage image;
-        if ( !image.LoadFile(name, type) || !image.Ok() )
+        if ( !image.LoadFile(name, type) || !image.IsOk() )
         {
-            wxLogError("no bitmap handler for type %d defined.", type);            
-            return FALSE;
+            wxLogError("no bitmap handler for type %d defined.", type);
+            return false;
         }
         else
         {
             *this = wxBitmap(image);
-            return TRUE;
+            return true;
         }
     }
 
-    m_refData = new wxBitmapRefData();
-
     return handler->LoadFile(this, name, type, -1, -1);
 }
 
 bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPalette *palette) const
 {
-    wxCHECK_MSG( Ok(), FALSE, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), false, wxT("invalid bitmap") );
 
     wxBitmapHandler *handler = FindHandler(type);
 
-    if ( handler == NULL ) 
+    if ( handler == NULL )
     {
         wxImage image = ConvertToImage();
         if ( palette )
             image.SetPalette(*palette);
 
-        if ( image.Ok() )
+        if ( image.IsOk() )
             return image.SaveFile(filename, type);
         else
         {
             wxLogError("no bitmap handler for type %d defined.", type);
-            return FALSE;
+            return false;
         }
     }
 
@@ -591,21 +487,21 @@ bool wxBitmap::SaveFile(const wxString& filename, wxBitmapType type, const wxPal
 
 wxPalette *wxBitmap::GetPalette() const
 {
-    wxCHECK_MSG( Ok(), NULL, wxT("invalid bitmap") );
+    wxCHECK_MSG( IsOk(), NULL, wxT("invalid bitmap") );
 
     return M_BMPDATA->m_palette;
 }
 
 void wxBitmap::SetPalette(const wxPalette& palette)
 {
-    wxCHECK_RET( Ok(), wxT("invalid bitmap") );
+    wxCHECK_RET( IsOk(), wxT("invalid bitmap") );
     wxCHECK_RET( GetDepth() > 1 && GetDepth() <= 8, wxT("cannot set palette for bitmap of this depth") );
 
-    delete M_BMPDATA->m_palette;
-    M_BMPDATA->m_palette = NULL;
+    AllocExclusive();
+    wxDELETE(M_BMPDATA->m_palette);
+
+    if ( !palette.IsOk() ) return;
 
-    if ( !palette.Ok() ) return;
-   
     M_BMPDATA->m_palette = new wxPalette(palette);
 
     int cnt = palette.GetColoursCount();
@@ -615,21 +511,21 @@ void wxBitmap::SetPalette(const wxPalette& palette)
 
 void wxBitmap::SetHeight(int height)
 {
-    if (!m_refData) m_refData = new wxBitmapRefData();
+    AllocExclusive();
 
     M_BMPDATA->m_height = height;
 }
 
 void wxBitmap::SetWidth(int width)
 {
-    if (!m_refData) m_refData = new wxBitmapRefData();
+    AllocExclusive();
 
     M_BMPDATA->m_width = width;
 }
 
 void wxBitmap::SetDepth(int depth)
 {
-    if (!m_refData) m_refData = new wxBitmapRefData();
+    AllocExclusive();
 
     M_BMPDATA->m_bpp = depth;
 }
@@ -639,6 +535,19 @@ bitmap_t *wxBitmap::GetMGLbitmap_t() const
     return M_BMPDATA->m_bitmap;
 }
 
+// Convert wxColour into it's quantized value in lower-precision
+// pixel format (needed for masking by colour).
+wxColour wxBitmap::QuantizeColour(const wxColour& clr) const
+{
+    pixel_format_t *pf = GetMGLbitmap_t()->pf;
+
+    if ( pf->redAdjust == 0 && pf->greenAdjust == 0 && pf->blueAdjust == 0 )
+        return clr;
+    else
+        return wxColour((unsigned char)((clr.Red() >> pf->redAdjust) << pf->redAdjust),
+                        (unsigned char)((clr.Green() >> pf->greenAdjust) << pf->greenAdjust),
+                        (unsigned char)((clr.Blue() >> pf->blueAdjust) << pf->blueAdjust));
+}
 
 
 //-----------------------------------------------------------------------------
@@ -651,17 +560,21 @@ public:
     wxMGLBitmapHandler(wxBitmapType type,
                        const wxString& extension, const wxString& name);
 
-    virtual bool Create(wxBitmap *bitmap, void *data, long flags, 
-                          int width, int height, int depth = 1)
-        { return FALSE; }
+    virtual bool Create(wxBitmap *WXUNUSED(bitmap),
+                        const void* WXUNUSED(data),
+                        long WXUNUSED(flags),
+                        int WXUNUSED(width),
+                        int WXUNUSED(height),
+                        int WXUNUSED(depth) = 1)
+        { return false; }
 
     virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
                           int desiredWidth, int desiredHeight);
-    virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name, 
+    virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name,
                           int type, const wxPalette *palette = NULL);
 };
 
-wxMGLBitmapHandler::wxMGLBitmapHandler(wxBitmapType type, 
+wxMGLBitmapHandler::wxMGLBitmapHandler(wxBitmapType type,
                                        const wxString& extension,
                                        const wxString& name)
    : wxBitmapHandler()
@@ -671,16 +584,16 @@ wxMGLBitmapHandler::wxMGLBitmapHandler(wxBitmapType type,
     SetExtension(extension);
 }
 
-bool wxMGLBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, 
-                                  long flags, 
-                                  int WXUNUSED(desiredWidth), 
+bool wxMGLBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
+                                  long flags,
+                                  int WXUNUSED(desiredWidth),
                                   int WXUNUSED(desiredHeight))
 {
     int width, height, bpp;
     pixel_format_t pf;
     wxString fullname;
     wxMemoryDC dc;
-    
+
     switch (flags)
     {
         case wxBITMAP_TYPE_BMP_RESOURCE:
@@ -692,52 +605,52 @@ bool wxMGLBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
         default:
             fullname= name;
             break;
-    }   
+    }
 
     switch (flags)
     {
         case wxBITMAP_TYPE_BMP:
         case wxBITMAP_TYPE_BMP_RESOURCE:
             if ( !MGL_getBitmapSize(fullname.mb_str(), &width, &height, &bpp, &pf) )
-                return FALSE;
+                return false;
             bitmap->Create(width, height, -1);
-            if ( !bitmap->Ok() ) return FALSE;
+            if ( !bitmap->IsOk() ) return false;
             dc.SelectObject(*bitmap);
             if ( !dc.GetMGLDC()->loadBitmapIntoDC(fullname.mb_str(), 0, 0, TRUE) )
-                return FALSE;
+                return false;
             break;
 
         case wxBITMAP_TYPE_JPEG:
         case wxBITMAP_TYPE_JPEG_RESOURCE:
             if ( !MGL_getJPEGSize(fullname.mb_str(), &width, &height, &bpp, &pf) )
-                return FALSE;
+                return false;
             bitmap->Create(width, height, -1);
-            if ( !bitmap->Ok() ) return FALSE;
+            if ( !bitmap->IsOk() ) return false;
             dc.SelectObject(*bitmap);
             if ( !dc.GetMGLDC()->loadJPEGIntoDC(fullname.mb_str(), 0, 0, TRUE) )
-                return FALSE;
+                return false;
             break;
 
         case wxBITMAP_TYPE_PNG:
         case wxBITMAP_TYPE_PNG_RESOURCE:
             if ( !MGL_getPNGSize(fullname.mb_str(), &width, &height, &bpp, &pf) )
-                return FALSE;
+                return false;
             bitmap->Create(width, height, -1);
-            if ( !bitmap->Ok() ) return FALSE;
+            if ( !bitmap->IsOk() ) return false;
             dc.SelectObject(*bitmap);
             if ( !dc.GetMGLDC()->loadPNGIntoDC(fullname.mb_str(), 0, 0, TRUE) )
-                return FALSE;
+                return false;
             break;
 
         case wxBITMAP_TYPE_PCX:
         case wxBITMAP_TYPE_PCX_RESOURCE:
             if ( !MGL_getPCXSize(fullname.mb_str(), &width, &height, &bpp) )
-                return FALSE;
+                return false;
             bitmap->Create(width, height, -1);
-            if ( !bitmap->Ok() ) return FALSE;
+            if ( !bitmap->IsOk() ) return false;
             dc.SelectObject(*bitmap);
             if ( !dc.GetMGLDC()->loadPCXIntoDC(fullname.mb_str(), 0, 0, TRUE) )
-                return FALSE;
+                return false;
             break;
 
         default:
@@ -745,10 +658,10 @@ bool wxMGLBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
             break;
     }
 
-    return TRUE;
+    return true;
 }
 
-bool wxMGLBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, 
+bool wxMGLBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name,
                                   int type, const wxPalette * WXUNUSED(palette))
 {
     wxMemoryDC mem;
@@ -756,32 +669,27 @@ bool wxMGLBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name,
     int w = bitmap->GetWidth(),
         h = bitmap->GetHeight();
 
-    mem.SelectObject(*bitmap);
+    mem.SelectObjectAsSource(*bitmap);
     tdc = mem.GetMGLDC();
 
     switch (type)
     {
         case wxBITMAP_TYPE_BMP:
-            return tdc->saveBitmapFromDC(name.mb_str(), 0, 0, w, h);
-            break;
+            return (bool)tdc->saveBitmapFromDC(name.mb_str(), 0, 0, w, h);
         case wxBITMAP_TYPE_JPEG:
-            return tdc->saveJPEGFromDC(name.mb_str(), 0, 0, w, h, 75);
-            break;
+            return (bool)tdc->saveJPEGFromDC(name.mb_str(), 0, 0, w, h, 75);
         case wxBITMAP_TYPE_PNG:
-            return tdc->savePNGFromDC(name.mb_str(), 0, 0, w, h);
-            break;
+            return (bool)tdc->savePNGFromDC(name.mb_str(), 0, 0, w, h);
         case wxBITMAP_TYPE_PCX:
-            return tdc->savePCXFromDC(name.mb_str(), 0, 0, w, h);
-            break;
-        default:
-            return FALSE;
-            break;
+            return (bool)tdc->savePCXFromDC(name.mb_str(), 0, 0, w, h);
     }
+
+    return false;
 }
 
 
 
-// let's handle PNGs in special way because they have alpha channel 
+// let's handle PNGs in special way because they have alpha channel
 // which we can access via bitmap_t most easily
 class wxPNGBitmapHandler: public wxMGLBitmapHandler
 {
@@ -794,8 +702,8 @@ public:
                           int desiredWidth, int desiredHeight);
 };
 
-bool wxPNGBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, 
-                                  long flags, 
+bool wxPNGBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
+                                  long flags,
                                   int desiredWidth, int desiredHeight)
 {
     int width, height, bpp;
@@ -808,30 +716,30 @@ bool wxPNGBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
         fullname = name;
 
     if ( !MGL_getPNGSize(fullname.mb_str(), &width, &height, &bpp, &pf) )
-        return FALSE;
+        return false;
 
     if ( bpp != 32 )
     {
         // We can load ordinary PNGs faster with 'normal' MGL handler.
         // Only RGBA PNGs need to be processed in special way because
         // we have to convert alpha channel to mask
-        return wxMGLBitmapHandler::LoadFile(bitmap, name, flags, 
+        return wxMGLBitmapHandler::LoadFile(bitmap, name, flags,
                                             desiredWidth, desiredHeight);
     }
-        
+
     bitmap_t *bmp = MGL_loadPNG(fullname.mb_str(), TRUE);
-    
-    if ( bmp == NULL ) return FALSE;
+
+    if ( bmp == NULL ) return false;
 
     bitmap->Create(bmp->width, bmp->height, -1);
-    if ( !bitmap->Ok() ) return FALSE;
-   
+    if ( !bitmap->IsOk() ) return false;
+
     // convert bmp to display's depth and write it to *bitmap:
     wxMemoryDC dc;
     dc.SelectObject(*bitmap);
     dc.GetMGLDC()->putBitmap(0, 0, bmp, MGL_REPLACE_MODE);
     dc.SelectObject(wxNullBitmap);
-    
+
     // create mask, if bmp contains alpha channel (ARGB format):
     if ( bmp->bitsPerPixel == 32 )
     {
@@ -842,8 +750,8 @@ bool wxPNGBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
             s = ((wxUint32*)bmp->surface) + y * bmp->bytesPerLine/4;
             for (x = 0; x < bmp->width; x++, s ++)
             {
-                if ( ((((*s) >> bmp->pf->rsvdPos) & bmp->pf->rsvdMask) 
-                        << bmp->pf->rsvdAdjust) < 128 )
+                if ( ((((*s) >> bmp->pf->alphaPos) & bmp->pf->alphaMask)
+                        << bmp->pf->alphaAdjust) < 128 )
                     *s = 0;
                 else
                     *s = 0x00FFFFFF; // white
@@ -855,10 +763,10 @@ bool wxPNGBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
         dc.SelectObject(wxNullBitmap);
         bitmap->SetMask(new wxMask(mask));
     }
-    
+
     MGL_unloadBitmap(bmp);
-    
-    return TRUE;
+
+    return true;
 }
 
 
@@ -869,18 +777,22 @@ class wxICOBitmapHandler: public wxBitmapHandler
     public:
         wxICOBitmapHandler(wxBitmapType type,
                            const wxString& extension, const wxString& name);
-        
-        virtual bool Create(wxBitmap *bitmap, void *data, long flags, 
-                              int width, int height, int depth = 1)
-            { return FALSE; }
-    
+
+        virtual bool Create(wxBitmap *WXUNUSED(bitmap),
+                            const void* WXUNUSED(data),
+                            long WXUNUSED(flags),
+                            int WXUNUSED(width),
+                            int WXUNUSED(height),
+                            int WXUNUSED(depth) = 1)
+            { return false; }
+
         virtual bool LoadFile(wxBitmap *bitmap, const wxString& name, long flags,
                               int desiredWidth, int desiredHeight);
-        virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name, 
+        virtual bool SaveFile(const wxBitmap *bitmap, const wxString& name,
                               int type, const wxPalette *palette = NULL);
 };
 
-wxICOBitmapHandler::wxICOBitmapHandler(wxBitmapType type, 
+wxICOBitmapHandler::wxICOBitmapHandler(wxBitmapType type,
                                        const wxString& extension,
                                        const wxString& name)
    : wxBitmapHandler()
@@ -890,9 +802,9 @@ wxICOBitmapHandler::wxICOBitmapHandler(wxBitmapType type,
     SetExtension(extension);
 }
 
-bool wxICOBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name, 
-                                  long flags, 
-                                  int WXUNUSED(desiredWidth), 
+bool wxICOBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
+                                  long flags,
+                                  int WXUNUSED(desiredWidth),
                                   int WXUNUSED(desiredHeight))
 {
     icon_t *icon = NULL;
@@ -900,10 +812,10 @@ bool wxICOBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
 
     if ( flags == wxBITMAP_TYPE_ICO_RESOURCE )
         icon = MGL_loadIcon(wxString(name + wxT(".ico")).mb_str(), TRUE);
-    else   
+    else
         icon = MGL_loadIcon(name.mb_str(), TRUE);
 
-    if ( icon == NULL ) return FALSE;
+    if ( icon == NULL ) return false;
 
     bitmap->Create(icon->xorMask.width, icon->xorMask.height);
 
@@ -923,18 +835,20 @@ bool wxICOBitmapHandler::LoadFile(wxBitmap *bitmap, const wxString& name,
     dc->clearDevice();
     dc->putMonoImage(0, 0, icon->xorMask.width, icon->byteWidth,
                            icon->xorMask.height, (void*)icon->andMask);
-    
+
     bitmap->SetMask(new wxMask(mask));
 
     MGL_unloadIcon(icon);
-    
-    return TRUE;
+
+    return true;
 }
 
-bool wxICOBitmapHandler::SaveFile(const wxBitmap *bitmap, const wxString& name, 
-                                  int type, const wxPalette * WXUNUSED(palette))
+bool wxICOBitmapHandler::SaveFile(const wxBitmap *WXUNUSED(bitmap),
+                                  const wxString& WXUNUSED(name),
+                                  int WXUNUSED(type),
+                                  const wxPalette * WXUNUSED(palette))
 {
-    return FALSE;
+    return false;
 }