vcl/opengl/win/gdiimpl.cxx

   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 #include <o3tl/lru_map.hxx>
  11
  12
  13 #include "opengl/win/gdiimpl.hxx"
  14
  15 #include <win/wincomp.hxx>
  16 #include <win/saldata.hxx>
  17 #include <win/salframe.h>
  18
  19 WinOpenGLSalGraphicsImpl::WinOpenGLSalGraphicsImpl(WinSalGraphics& rGraphics,
  20                                                    SalGeometryProvider *mpProvider):
  21     OpenGLSalGraphicsImpl(rGraphics,mpProvider),
  22     mrParent(rGraphics)
  23 {
  24 }
  25
  26 void WinOpenGLSalGraphicsImpl::copyBits( const SalTwoRect& rPosAry, SalGraphics* pSrcGraphics )
  27 {
  28     OpenGLSalGraphicsImpl *pImpl = pSrcGraphics ? static_cast< OpenGLSalGraphicsImpl* >(pSrcGraphics->GetImpl()) : static_cast< OpenGLSalGraphicsImpl *>(mrParent.GetImpl());
  29     OpenGLSalGraphicsImpl::DoCopyBits( rPosAry, *pImpl );
  30 }
  31
  32 rtl::Reference<OpenGLContext> WinOpenGLSalGraphicsImpl::CreateWinContext()
  33 {
  34     rtl::Reference<OpenGLContext> pContext = OpenGLContext::Create();
  35     pContext->requestSingleBufferedRendering();
  36     pContext->init( mrParent.mhLocalDC, mrParent.mhWnd );
  37     return pContext;
  38 }
  39
  40 bool WinOpenGLSalGraphicsImpl::UseContext( const rtl::Reference<OpenGLContext> &pContext )
  41 {
  42     if( !pContext.is() || !pContext->isInitialized() || IsForeignContext( pContext ) )
  43         return false;
  44     if( IsOffscreen() )
  45         return true;
  46     return pContext->getOpenGLWindow().hWnd == mrParent.mhWnd &&
  47            pContext->getOpenGLWindow().hDC == mrParent.mhLocalDC;
  48 }
  49
  50 void WinOpenGLSalGraphicsImpl::Init()
  51 {
  52     if ( !IsOffscreen() && mpContext.is() && mpContext->isInitialized() &&
  53          ( mpContext->getOpenGLWindow().hWnd != mrParent.mhWnd ||
  54            mpContext->getOpenGLWindow().hDC == mrParent.mhLocalDC ) )
  55     {
  56         // This can legitimiately happen, SalFrame keeps 2x
  57         // SalGraphics which share the same hWnd and hDC.
  58         // The shape 'Area' dialog does reparenting to trigger this.
  59         SAL_WARN("vcl.opengl", "Unusual: Windows handle / DC changed without DeInit");
  60         DeInit();
  61     }
  62
  63     OpenGLSalGraphicsImpl::Init();
  64 }
  65
  66 namespace
  67 {
  68
  69 typedef std::pair<ControlCacheKey, std::unique_ptr<TextureCombo>> ControlCachePair;
  70 typedef o3tl::lru_map<ControlCacheKey, std::unique_ptr<TextureCombo>, ControlCacheHashFunction> ControlCacheType;
  71
  72 ControlCacheType gTextureCache(200);
  73
  74 }
  75
  76 bool WinOpenGLSalGraphicsImpl::TryRenderCachedNativeControl(ControlCacheKey& rControlCacheKey, int nX, int nY)
  77 {
  78     static bool gbCacheEnabled = !getenv("SAL_WITHOUT_WIDGET_CACHE");
  79
  80     if (!gbCacheEnabled)
  81         return false;
  82
  83     ControlCacheType::const_iterator iterator = gTextureCache.find(rControlCacheKey);
  84
  85     if (iterator == gTextureCache.end())
  86         return false;
  87
  88     const std::unique_ptr<TextureCombo>& pCombo = iterator->second;
  89
  90     PreDraw();
  91
  92     OpenGLTexture& rTexture = *pCombo->mpTexture;
  93
  94     SalTwoRect aPosAry(0,  0,  rTexture.GetWidth(), rTexture.GetHeight(),
  95                        nX, nY, rTexture.GetWidth(), rTexture.GetHeight());
  96
  97     if (pCombo->mpMask)
  98         DrawTextureDiff(rTexture, *pCombo->mpMask, aPosAry);
  99     else
 100         DrawTexture(rTexture, aPosAry);
 101
 102     PostDraw();
 103
 104     return true;
 105 }
 106
 107 bool WinOpenGLSalGraphicsImpl::RenderCompatibleDC(OpenGLCompatibleDC& rWhite, OpenGLCompatibleDC& rBlack,
 108                                                   int nX, int nY, TextureCombo& rCombo)
 109 {
 110     PreDraw();
 111
 112     rCombo.mpTexture.reset(rWhite.getTexture());
 113     rCombo.mpMask.reset(rBlack.getTexture());
 114
 115
 116     if (rCombo.mpTexture && rCombo.mpMask)
 117     {
 118         OpenGLTexture& rTexture = *rCombo.mpTexture;
 119
 120         SalTwoRect aPosAry(0,   0, rTexture.GetWidth(), rTexture.GetHeight(),
 121                            nX, nY, rTexture.GetWidth(), rTexture.GetHeight());
 122
 123         DrawTextureDiff(*rCombo.mpTexture, *rCombo.mpMask, aPosAry);
 124     }
 125
 126     PostDraw();
 127     return true;
 128 }
 129
 130 bool WinOpenGLSalGraphicsImpl::RenderAndCacheNativeControl(OpenGLCompatibleDC& rWhite, OpenGLCompatibleDC& rBlack,
 131                                                            int nX, int nY , ControlCacheKey& aControlCacheKey)
 132 {
 133     std::unique_ptr<TextureCombo> pCombo(new TextureCombo);
 134
 135     bool bResult = RenderCompatibleDC(rWhite, rBlack, nX, nY, *pCombo);
 136     if (!bResult)
 137         return false;
 138
 139     if (!aControlCacheKey.canCacheControl())
 140         return true;
 141
 142     ControlCachePair pair(aControlCacheKey, std::move(pCombo));
 143     gTextureCache.insert(std::move(pair));
 144
 145     return bResult;
 146 }
 147
 148 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */