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 #pragma once
  11
  12 #include <win/salgdi.h>
  13 #include <ControlCacheKey.hxx>
  14
  15 class ControlCacheKey;
  16
  17 // Base class for some functionality that OpenGL/Skia/GDI backends must each implement.
  18 class WinSalGraphicsImplBase
  19 {
  20 public:
  21     virtual ~WinSalGraphicsImplBase() {}
  22
  23     // If true is returned, the following functions are used for drawing controls.
  24     virtual bool UseRenderNativeControl() const { return false; }
  25     virtual bool TryRenderCachedNativeControl(const ControlCacheKey& /*rControlCacheKey*/,
  26                                               int /*nX*/, int /*nY*/)
  27     {
  28         abort();
  29     }
  30     virtual bool RenderAndCacheNativeControl(CompatibleDC& /*rWhite*/, CompatibleDC& /*rBlack*/,
  31                                              int /*nX*/, int /*nY*/,
  32                                              ControlCacheKey& /*aControlCacheKey*/)
  33     {
  34         abort();
  35     }
  36
  37     virtual void ClearDevFontCache() {}
  38
  39     virtual void Flush() {}
  40
  41     // Implementation for WinSalGraphics::DrawTextLayout().
  42     // Returns true if handled, if false, then WinSalGraphics will handle it itself.
  43     virtual bool DrawTextLayout(const GenericSalLayout&) { return false; }
  44
  45     virtual void ClearNativeControlCache() {}
  46 };
  47
  48 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */