| // Copyright 2016 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #include "core/fpdfapi/render/cpdf_rendercontext.h" |
| |
| #include "core/fpdfapi/page/cpdf_page.h" |
| #include "core/fpdfapi/page/cpdf_pageobject.h" |
| #include "core/fpdfapi/page/cpdf_pageobjectholder.h" |
| #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fpdfapi/render/cpdf_pagerendercache.h" |
| #include "core/fpdfapi/render/cpdf_progressiverenderer.h" |
| #include "core/fpdfapi/render/cpdf_renderoptions.h" |
| #include "core/fpdfapi/render/cpdf_renderstatus.h" |
| #include "core/fpdfapi/render/cpdf_textrenderer.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| #include "core/fxge/fx_dib.h" |
| |
| CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage) |
| : m_pDocument(pPage->m_pDocument.Get()), |
| m_pPageResources(pPage->m_pPageResources.Get()), |
| m_pPageCache(pPage->GetRenderCache()) {} |
| |
| CPDF_RenderContext::CPDF_RenderContext(CPDF_Document* pDoc, |
| CPDF_PageRenderCache* pPageCache) |
| : m_pDocument(pDoc), m_pPageResources(nullptr), m_pPageCache(pPageCache) {} |
| |
| CPDF_RenderContext::~CPDF_RenderContext() {} |
| |
| void CPDF_RenderContext::GetBackground( |
| const CFX_RetainPtr<CFX_DIBitmap>& pBuffer, |
| const CPDF_PageObject* pObj, |
| const CPDF_RenderOptions* pOptions, |
| CFX_Matrix* pFinalMatrix) { |
| CFX_DefaultRenderDevice device; |
| device.Attach(pBuffer, false, nullptr, false); |
| |
| FX_RECT rect(0, 0, device.GetWidth(), device.GetHeight()); |
| device.FillRect(&rect, 0xffffffff); |
| Render(&device, pObj, pOptions, pFinalMatrix); |
| } |
| |
| void CPDF_RenderContext::AppendLayer(CPDF_PageObjectHolder* pObjectHolder, |
| const CFX_Matrix* pObject2Device) { |
| m_Layers.emplace_back(); |
| m_Layers.back().m_pObjectHolder = pObjectHolder; |
| if (pObject2Device) |
| m_Layers.back().m_Matrix = *pObject2Device; |
| else |
| m_Layers.back().m_Matrix.SetIdentity(); |
| } |
| |
| void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, |
| const CPDF_RenderOptions* pOptions, |
| const CFX_Matrix* pLastMatrix) { |
| Render(pDevice, nullptr, pOptions, pLastMatrix); |
| } |
| |
| void CPDF_RenderContext::Render(CFX_RenderDevice* pDevice, |
| const CPDF_PageObject* pStopObj, |
| const CPDF_RenderOptions* pOptions, |
| const CFX_Matrix* pLastMatrix) { |
| for (auto& layer : m_Layers) { |
| CFX_RenderDevice::StateRestorer restorer(pDevice); |
| CPDF_RenderStatus status; |
| if (pLastMatrix) { |
| CFX_Matrix FinalMatrix = layer.m_Matrix; |
| FinalMatrix.Concat(*pLastMatrix); |
| status.Initialize(this, pDevice, pLastMatrix, pStopObj, nullptr, nullptr, |
| pOptions, layer.m_pObjectHolder->m_Transparency, false, |
| nullptr); |
| status.RenderObjectList(layer.m_pObjectHolder.Get(), &FinalMatrix); |
| } else { |
| status.Initialize(this, pDevice, nullptr, pStopObj, nullptr, nullptr, |
| pOptions, layer.m_pObjectHolder->m_Transparency, false, |
| nullptr); |
| status.RenderObjectList(layer.m_pObjectHolder.Get(), &layer.m_Matrix); |
| } |
| if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) |
| m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); |
| if (status.m_bStopped) |
| break; |
| } |
| } |
| |
| CPDF_RenderContext::Layer::Layer() {} |
| |
| CPDF_RenderContext::Layer::Layer(const Layer& that) = default; |
| |
| CPDF_RenderContext::Layer::~Layer() {} |