fixes to mask creation by colour
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12020 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
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@@ -51,6 +51,26 @@ static pixel_format_t gs_pixel_format_32 =
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static pixel_format_t gs_pixel_format_wxImage =
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{0xFF,0x00,0, 0xFF,0x08,0, 0xFF,0x10,0, 0x00,0x00,0}; // RGB 24bpp for wxImage
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//-----------------------------------------------------------------------------
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// helpers
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//-----------------------------------------------------------------------------
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// Convert wxColour into it's quantized value in lower-precision
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// pixel format (needed for masking by colour).
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static wxColour wxQuantizeColour(const wxColour& clr, const wxBitmap& bmp)
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{
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pixel_format_t *pf = bmp.GetMGLbitmap_t()->pf;
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if ( pf->redAdjust == 0 && pf->greenAdjust == 0 && pf->blueAdjust == 0 )
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return clr;
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else
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return wxColour((clr.Red() >> pf->redAdjust) << pf->redAdjust,
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(clr.Green() >> pf->greenAdjust) << pf->greenAdjust,
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(clr.Blue() >> pf->blueAdjust) << pf->blueAdjust);
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}
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//-----------------------------------------------------------------------------
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// wxMask
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//-----------------------------------------------------------------------------
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@@ -89,11 +109,14 @@ bool wxMask::Create(const wxBitmap& bitmap, const wxColour& colour)
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{
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delete m_bitmap;
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m_bitmap = NULL;
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wxImage image = bitmap.ConvertToImage().ConvertToMono(
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colour.Red(), colour.Green(), colour.Blue());
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if ( !image.Ok() ) return FALSE;
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wxColour clr(wxQuantizeColour(colour, bitmap));
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wxImage imgSrc(bitmap.ConvertToImage());
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imgSrc.SetMask(FALSE);
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wxImage image(imgSrc.ConvertToMono(clr.Red(), clr.Green(), clr.Blue()));
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if ( !image.Ok() ) return FALSE;
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m_bitmap = new wxBitmap(image, 1);
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return m_bitmap->Ok();
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