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Implement getting/releasing HDC in Cairo wxGraphicsContext (wxMSW)

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This commit is contained in:
Artur Wieczorek
2021-06-27 23:56:24 +02:00
parent dd7bcbd9eb
commit a3988c8db6
3 changed files with 20 additions and 13 deletions
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26
src/generic/graphicc.cpp
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@@ -513,15 +513,8 @@ public:
virtual void GetPartialTextExtents(const wxString& text, wxArrayDouble& widths) const wxOVERRIDE;
#ifdef __WXMSW__
virtual WXHDC GetNativeHDC() wxOVERRIDE
{
wxFAIL_MSG("Can't get HDC from Cairo context");
return NULL;
};
virtual void ReleaseNativeHDC(WXHDC WXUNUSED(hdc)) wxOVERRIDE
{
wxFAIL_MSG("Can't release HDC for Cairo context");
};
virtual WXHDC GetNativeHDC() wxOVERRIDE;
virtual void ReleaseNativeHDC(WXHDC WXUNUSED(hdc)) wxOVERRIDE;
#endif
protected:
@@ -3086,6 +3079,21 @@ void wxCairoContext::EndLayer()
cairo_paint_with_alpha(m_context, double(opacity));
}
#ifdef __WXMSW__
WXHDC wxCairoContext::GetNativeHDC()
{
wxCHECK_MSG(m_mswSurface, NULL, "Can't get HDC from Cairo context");
cairo_surface_flush(m_mswSurface);
return cairo_win32_surface_get_dc(m_mswSurface);
};
void wxCairoContext::ReleaseNativeHDC(WXHDC WXUNUSED(hdc))
{
wxCHECK_RET(m_mswSurface, "Can't release HDC for Cairo context");
cairo_surface_mark_dirty(m_mswSurface);
};
#endif // __WXMSW__
//-----------------------------------------------------------------------------
// wxCairoRenderer declaration
//-----------------------------------------------------------------------------