wine/gecko
0
0
Fork 0
mirror of https://gitlab.winehq.org/wine/wine-gecko.git synced 2024-09-13 09:24:08 -07:00
Code Issues Packages Projects Releases Wiki Activity

Bug 556487 - Subimage API. r=roc a=blocking2.0

Browse Source
This commit is contained in:
Oleg Romashin 2010-09-15 09:02:42 -07:00
parent 39bc8e0957
commit 346c73181d
2 changed files with 41 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
gfx/thebes/gfxImageSurface.cpp
View File

@ -192,3 +192,27 @@ gfxImageSurface::CopyFrom(gfxImageSurface *other)
return PR_TRUE; return PR_TRUE;
} }
already_AddRefed<gfxSubimageSurface>
gfxImageSurface::GetSubimage(const gfxRect& aRect)
{
gfxRect r(aRect);
r.Round();
unsigned char* subData = Data() +
(Stride() * (int)r.Y()) +
(int)r.X() * gfxASurface::BytePerPixelFromFormat(Format());
nsRefPtr<gfxSubimageSurface> image =
new gfxSubimageSurface(this, subData,
gfxIntSize((int)r.Width(), (int)r.Height()));
return image.forget().get();
}
gfxSubimageSurface::gfxSubimageSurface(gfxImageSurface* aParent,
unsigned char* aData,
const gfxIntSize& aSize)
: gfxImageSurface(aData, aSize, aParent->Stride(), aParent->Format())
, mParent(aParent)
{
}

17
gfx/thebes/gfxImageSurface.h
View File

@ -43,6 +43,8 @@
// ARGB -- raw buffer.. wont be changed.. good for storing data. // ARGB -- raw buffer.. wont be changed.. good for storing data.
class gfxSubimageSurface;
/** /**
* A raw image buffer. The format can be set in the constructor. Its main * A raw image buffer. The format can be set in the constructor. Its main
* purpose is for storing read-only images and using it as a source surface, * purpose is for storing read-only images and using it as a source surface,
@ -99,6 +101,11 @@ public:
/* Fast copy from another image surface; returns TRUE if successful, FALSE otherwise */ /* Fast copy from another image surface; returns TRUE if successful, FALSE otherwise */
PRBool CopyFrom (gfxImageSurface *other); PRBool CopyFrom (gfxImageSurface *other);
/* return new Subimage with pointing to original image starting from aRect.pos
* and size of aRect.size. New subimage keeping current image reference
*/
already_AddRefed<gfxSubimageSurface> GetSubimage(const gfxRect& aRect);
protected: protected:
gfxImageSurface(); gfxImageSurface();
void InitFromSurface(cairo_surface_t *csurf); void InitFromSurface(cairo_surface_t *csurf);
@ -111,4 +118,14 @@ protected:
long mStride; long mStride;
}; };
class THEBES_API gfxSubimageSurface : public gfxImageSurface {
protected:
friend class gfxImageSurface;
gfxSubimageSurface(gfxImageSurface* aParent,
unsigned char* aData,
const gfxIntSize& aSize);
private:
nsRefPtr<gfxImageSurface> mParent;
};
#endif /* GFX_IMAGESURFACE_H */ #endif /* GFX_IMAGESURFACE_H */