vcl/inc/win/wingdiimpl.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #ifndef INCLUDED_VCL_INC_WIN_WINGDIIMPL_HXX
  11 #define INCLUDED_VCL_INC_WIN_WINGDIIMPL_HXX
  12
  13 #include <win/salgdi.h>
  14 #include <ControlCacheKey.hxx>
  15
  16 class ControlCacheKey;
  17
  18 // Base class for some functionality that OpenGL/Skia/GDI backends must each implement.
  19 class WinSalGraphicsImplBase
  20 {
  21 public:
  22     virtual ~WinSalGraphicsImplBase(){};
  23
  24     // If true is returned, the following functions are used for drawing controls.
  25     virtual bool UseRenderNativeControl() const { return false; }
  26     virtual bool TryRenderCachedNativeControl(const ControlCacheKey& /*rControlCacheKey*/,
  27                                               int /*nX*/, int /*nY*/)
  28     {
  29         abort();
  30     };
  31     virtual bool RenderAndCacheNativeControl(CompatibleDC& /*rWhite*/, CompatibleDC& /*rBlack*/,
  32                                              int /*nX*/, int /*nY*/,
  33                                              ControlCacheKey& /*aControlCacheKey*/)
  34     {
  35         abort();
  36     };
  37
  38     virtual void ClearDevFontCache(){};
  39
  40     virtual void Flush(){};
  41
  42     // Implementation for WinSalGraphics::DrawTextLayout().
  43     // Returns true if handled, if false, then WinSalGraphics will handle it itself.
  44     virtual bool DrawTextLayout(const GenericSalLayout&) { return false; }
  45 };
  46
  47 #endif // INCLUDED_VCL_INC_WIN_WINGDIIMPL_HXX
  48
  49 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */