AuroraMiddleware/wxWidgets
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Added GetSubBitmap()

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5124 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Guillermo Rodriguez Garcia 1999-12-28 12:28:39 +00:00
parent 7468b994be
commit 3f399a69cc
2 changed files with 43 additions and 0 deletions
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3
include/wx/msw/bitmap.h
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@ -116,6 +116,9 @@ public:
virtual ~wxBitmap();
// GRG, Dic/99
wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect ) const;
// copies the contents and mask of the given (colour) icon to the bitmap
bool CopyFromIcon(const wxIcon& icon);

40
src/msw/bitmap.cpp
View File

@ -249,6 +249,46 @@ wxBitmap::wxBitmap(const char bits[], int the_width, int the_height, int no_bits
SetHBITMAP((WXHBITMAP)hbmp);
}
// GRG, Dic/99
wxBitmap wxBitmap::GetSubBitmap( const wxRect& rect) const
{
wxCHECK_MSG( Ok() &&
(rect.x >= 0) && (rect.y >= 0) &&
(rect.x+rect.width <= GetWidth()) &&
(rect.y+rect.height <= GetHeight()),
wxNullBitmap, wxT("Invalid bitmap or bitmap region") );
wxBitmap ret( rect.width, rect.height, GetDepth() );
wxASSERT_MSG( ret.Ok(), wxT("GetSubBitmap error") );
// copy bitmap data
HDC dcSrc = ::CreateCompatibleDC(NULL);
HDC dcDst = ::CreateCompatibleDC(NULL);
SelectObject(dcSrc, (HBITMAP) GetHBITMAP());
SelectObject(dcDst, (HBITMAP) ret.GetHBITMAP());
BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY);
// copy mask if there is one
if (GetMask())
{
HBITMAP hbmpMask = ::CreateBitmap(rect.width, rect.height, 1, 1, 0);
SelectObject(dcSrc, (HBITMAP) GetMask()->GetMaskBitmap());
SelectObject(dcDst, (HBITMAP) hbmpMask);
BitBlt(dcDst, 0, 0, rect.width, rect.height, dcSrc, rect.x, rect.y, SRCCOPY);
wxMask *mask = new wxMask((WXHBITMAP) hbmpMask);
ret.SetMask(mask);
}
SelectObject(dcDst, NULL);
SelectObject(dcSrc, NULL);
DeleteDC(dcDst);
DeleteDC(dcSrc);
return ret;
}
// Create from XPM data
wxBitmap::wxBitmap(char **data, wxControl *WXUNUSED(anItem))
{