diff options
Diffstat (limited to 'vcl/inc/win/scoped_gdi.hxx')
-rw-r--r-- | vcl/inc/win/scoped_gdi.hxx | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/vcl/inc/win/scoped_gdi.hxx b/vcl/inc/win/scoped_gdi.hxx new file mode 100644 index 0000000000..86846e9860 --- /dev/null +++ b/vcl/inc/win/scoped_gdi.hxx @@ -0,0 +1,72 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#pragma once + +#include <win/svsys.h> +#include <win/wincomp.hxx> +#include <win/saldata.hxx> + +#include <memory> + +template <typename H, auto DeleterFunc> struct GDIDeleter +{ + using pointer = H; + void operator()(H h) { DeleterFunc(h); } +}; + +template <typename H, auto DeleterFunc> +using ScopedGDI = std::unique_ptr<H, GDIDeleter<H, DeleterFunc>>; + +using ScopedHBRUSH = ScopedGDI<HBRUSH, DeleteBrush>; +using ScopedHRGN = ScopedGDI<HRGN, DeleteRegion>; +using ScopedHDC = ScopedGDI<HDC, DeleteDC>; +using ScopedHPEN = ScopedGDI<HPEN, DeletePen>; +using ScopedHFONT = ScopedGDI<HFONT, DeleteFont>; +using ScopedHBITMAP = ScopedGDI<HBITMAP, DeleteBitmap>; + +template <typename ScopedH, auto SelectorFunc> class ScopedSelectedGDI +{ +public: + ScopedSelectedGDI(HDC hDC, typename ScopedH::pointer h) + : m_hDC(hDC) + , m_hSelectedH(h) + , m_hOrigH(SelectorFunc(hDC, h)) + { + } + + ~ScopedSelectedGDI() { SelectorFunc(m_hDC, m_hOrigH); } + +private: + HDC m_hDC; + ScopedH m_hSelectedH; + typename ScopedH::pointer m_hOrigH; +}; + +using ScopedSelectedHPEN = ScopedSelectedGDI<ScopedHPEN, SelectPen>; +using ScopedSelectedHFONT = ScopedSelectedGDI<ScopedHFONT, SelectFont>; +using ScopedSelectedHBRUSH = ScopedSelectedGDI<ScopedHBRUSH, SelectBrush>; + +template <sal_uLong ID> class ScopedCachedHDC +{ +public: + explicit ScopedCachedHDC(HBITMAP hBitmap) + : m_hDC(ImplGetCachedDC(ID, hBitmap)) + { + } + + ~ScopedCachedHDC() { ImplReleaseCachedDC(ID); } + + HDC get() const { return m_hDC; } + +private: + HDC m_hDC; +}; + +/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */ |