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[ 1537065 ] wxImage: Higher quality scaling/sampling

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41412 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Robert Roebling
2006-09-24 12:47:16 +00:00
parent 98de4ac1c5
commit 07aaa1a4b8
3 changed files with 533 additions and 55 deletions
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20
include/wx/image.h
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@@ -43,6 +43,13 @@ enum
wxIMAGE_RESOLUTION_CM = 2
};
// Constants for wxImage::Scale() for determining the level of quality
enum
{
wxIMAGE_QUALITY_NORMAL = 0,
wxIMAGE_QUALITY_HIGH = 1
};
// alpha channel values: fully transparent, default threshold separating
// transparent pixels from opaque for a few functions dealing with alpha and
// fully opaque
@@ -216,12 +223,21 @@ public:
void Paste( const wxImage &image, int x, int y );
// return the new image with size width*height
wxImage Scale( int width, int height ) const;
wxImage Scale( int width, int height, int quality = wxIMAGE_QUALITY_NORMAL ) const;
// box averager and bicubic filters for up/down sampling
wxImage ResampleBox(int width, int height) const;
wxImage ResampleBicubic(int width, int height) const;
// blur the image according to the specified pixel radius
wxImage Blur(int radius);
wxImage BlurHorizontal(int radius);
wxImage BlurVertical(int radius);
wxImage ShrinkBy( int xFactor , int yFactor ) const ;
// rescales the image in place
wxImage& Rescale( int width, int height ) { return *this = Scale(width, height); }
wxImage& Rescale( int width, int height, int quality = wxIMAGE_QUALITY_NORMAL ) { return *this = Scale(width, height, quality); }
// resizes the image in place
wxImage& Resize( const wxSize& size, const wxPoint& pos,