corrected hatched brushes emulation

[wxWidgets.git] / src / mgl / bitmap.cpp

diff --git a/src/mgl/bitmap.cpp b/src/mgl/bitmap.cpp
index b2489c75fd521daa3651a9bfab74550ce2667fbb..039406b2f436dbfa57a0727e65d9df3ad9662335 100644 (file)
--- a/src/mgl/bitmap.cpp
+++ b/src/mgl/bitmap.cpp
@@ -48,8 +48,27 @@ static pixel_format_t gs_pixel_format_24 =
 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
+static pixel_format_t gs_pixel_format_wxImage =
+       {0xFF,0x00,0, 0xFF,0x08,0, 0xFF,0x10,0, 0x00,0x00,0}; // RGB 24bpp for wxImage
+
+//-----------------------------------------------------------------------------
+// helpers
+//-----------------------------------------------------------------------------
+
+// Convert wxColour into it's quantized value in lower-precision
+// pixel format (needed for masking by colour).
+static wxColour wxQuantizeColour(const wxColour& clr, const wxBitmap& bmp)
+{
+    pixel_format_t *pf = bmp.GetMGLbitmap_t()->pf;
+    
+    if ( pf->redAdjust == 0 && pf->greenAdjust == 0 && pf->blueAdjust == 0 )
+        return clr;
+    else
+        return wxColour((clr.Red() >> pf->redAdjust) << pf->redAdjust,
+                        (clr.Green() >> pf->greenAdjust) << pf->greenAdjust,
+                        (clr.Blue() >> pf->blueAdjust) << pf->blueAdjust);
+}
+
 
 
 //-----------------------------------------------------------------------------
@@ -90,11 +109,14 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
 {
     delete m_bitmap;
     m_bitmap = NULL;
+    
+    wxColour clr(wxQuantizeColour(colour, bitmap));
 
-    wxImage image = bitmap.ConvertToImage().ConvertToMono(
-                                colour.Red(), colour.Green(), colour.Blue());
+    wxImage imgSrc(bitmap.ConvertToImage());
+    imgSrc.SetMask(FALSE);
+    wxImage image(imgSrc.ConvertToMono(clr.Red(), clr.Green(), clr.Blue()));
     if ( !image.Ok() ) return FALSE;
-    
+
     m_bitmap = new wxBitmap(image, 1);
 
     return m_bitmap->Ok();
@@ -169,16 +191,9 @@ wxBitmapRefData::~wxBitmapRefData()
 IMPLEMENT_ABSTRACT_CLASS(wxBitmapHandler,wxObject)
 IMPLEMENT_DYNAMIC_CLASS(wxBitmap,wxBitmapBase)
 
-wxBitmap::wxBitmap()
-{
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
-}
-
 wxBitmap::wxBitmap(int width, int height, int depth)
 {
     Create(width, height, depth);
-
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
 }
 
 
@@ -263,12 +278,10 @@ bool wxBitmap::CreateFromXpm(const char **bits)
     
     *this = wxBitmap(img);
     
-    if ( wxTheBitmapList ) wxTheBitmapList->AddBitmap(this);
-
     return TRUE;
 }
 
-wxBitmap::wxBitmap(const wxImage& image, int depth = -1)
+wxBitmap::wxBitmap(const wxImage& image, int depth)
 {
     long width, height;
 
@@ -279,13 +292,13 @@ wxBitmap::wxBitmap(const wxImage& image, int depth = -1)
 
     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);
@@ -313,7 +326,7 @@ wxImage wxBitmap::ConvertToImage() const
     wxImage image(width, height);
     wxASSERT_MSG( image.Ok(), wxT("cannot create image") );
     
-    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") );
 
@@ -348,15 +361,11 @@ wxImage wxBitmap::ConvertToImage() const
 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)
@@ -371,13 +380,6 @@ 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)