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Fix wxMenuItem::SetBitmap infinite recursion differently.

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Don't call SetBitmap from GetHBitmapForMenu but instead handle possibly
needed bitmap modifications earlier on during SetBitmap. Allows for
GetHBitmapForMenu to be const and gets rid of the clumsy re-entry check
introduced in r76754.
Also check the bitmap for alpha presence instead of needlessly converting
the bitmap to an image and checking the latter for alpha.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@76781 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Dimitri Schoolwerth
2014-06-27 05:38:11 +00:00
parent fffa92eaee
commit 0f84eca7c6
2 changed files with 15 additions and 34 deletions
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2
include/wx/msw/menuitem.h
View File

@@ -125,7 +125,7 @@ private:
};
// helper function to get a handle for bitmap associated with item
WXHBITMAP GetHBitmapForMenu(BitmapKind kind);
WXHBITMAP GetHBitmapForMenu(BitmapKind kind) const;
// helper function to set/change the bitmap
void DoSetBitmap(const wxBitmap& bmp, bool bChecked);

47
src/msw/menuitem.cpp
View File

@@ -730,37 +730,26 @@ void wxMenuItem::SetItemLabel(const wxString& txt)
}
}
void wxMenuItem::DoSetBitmap(const wxBitmap& bmp, bool bChecked)
void wxMenuItem::DoSetBitmap(const wxBitmap& bmpNew, bool bChecked)
{
static bool s_insideSetBitmap = false;
if ( bChecked )
{
if ( m_bmpChecked.IsSameAs(bmp) )
wxBitmap& bmp = bChecked ? m_bmpChecked : m_bmpUnchecked;
if ( bmp.IsSameAs(bmpNew) )
return;
m_bmpChecked = bmp;
#if wxUSE_IMAGE
if ( !bmpNew.HasAlpha() && wxGetWinVersion() >= wxWinVersion_Vista)
{
// we must use PARGB DIB for the menu bitmaps so ensure that we do
wxImage img(bmpNew.ConvertToImage());
img.InitAlpha();
bmp = wxBitmap(img);
}
else
#endif // wxUSE_IMAGE
{
if ( m_bmpUnchecked.IsSameAs(bmp) )
return;
m_bmpUnchecked = bmp;
bmp = bmpNew;
}
if (s_insideSetBitmap)
{
// We can arrive here because of calling GetHBitmapForMenu
// further down below, which itself can call [Do]SetBitmap
// resulting in infinite recursion. After having set the
// bitmap just return instead.
return;
}
wxON_BLOCK_EXIT_SET(s_insideSetBitmap, false);
s_insideSetBitmap = true;
#if wxUSE_OWNER_DRAWN
// already marked as owner-drawn, cannot be reverted
if ( IsOwnerDrawn() )
@@ -1377,7 +1366,7 @@ bool wxMenuItem::MSWMustUseOwnerDrawn()
#endif // wxUSE_OWNER_DRAWN
// returns the HBITMAP to use in MENUITEMINFO
HBITMAP wxMenuItem::GetHBitmapForMenu(BitmapKind kind)
HBITMAP wxMenuItem::GetHBitmapForMenu(BitmapKind kind) const
{
// Under versions of Windows older than Vista we can't pass HBITMAP
// directly as hbmpItem for 2 reasons:
@@ -1401,15 +1390,7 @@ HBITMAP wxMenuItem::GetHBitmapForMenu(BitmapKind kind)
wxBitmap bmp = GetBitmap(checked);
if ( bmp.IsOk() )
{
// we must use PARGB DIB for the menu bitmaps so ensure that we do
wxImage img(bmp.ConvertToImage());
if ( !img.HasAlpha() )
{
img.InitAlpha();
SetBitmap(img, checked);
}
return GetHbitmapOf(GetBitmap(checked));
return GetHbitmapOf(bmp);
}
//else: bitmap is not set
return NULL;