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Implement wxBitmap::GetSubBitmap.

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Patch authored by Software 2000 Ltd.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@50319 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
David Elliott
2007-11-29 07:28:17 +00:00
parent 3222fc18c9
commit 4706bee7c1
1 changed files with 19 additions and 2 deletions
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19
src/cocoa/bitmap.mm
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@@ -426,9 +426,26 @@ bool wxBitmap::CopyFromIcon(const wxIcon& icon)
return true; return true;
} }
wxBitmap wxBitmap::GetSubBitmap(wxRect const&) const wxBitmap wxBitmap::GetSubBitmap(const wxRect& rect) const
{ {
wxAutoNSAutoreleasePool pool;
if(!Ok())
return wxNullBitmap; return wxNullBitmap;
NSImage *nsimage = GetNSImage(false);
[nsimage lockFocus];
NSRect imageRect = {{0,0}, [nsimage size]};
imageRect.origin.x = imageRect.size.width * rect.x / GetWidth();
imageRect.origin.y = imageRect.size.height * rect.y / GetHeight();
imageRect.size.width *= wx_static_cast(CGFloat, rect.width) / GetWidth();
imageRect.size.height *= wx_static_cast(CGFloat, rect.height) / GetHeight();
NSBitmapImageRep *newBitmapRep = [[NSBitmapImageRep alloc] initWithFocusedViewRect:imageRect];
[nsimage unlockFocus];
wxBitmap newBitmap(newBitmapRep);
return (newBitmap);
} }
wxImage wxBitmap::ConvertToImage() const wxImage wxBitmap::ConvertToImage() const