| // Copyright 2014 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/render_int.h" |
| |
| #include <memory> |
| |
| #include "core/fpdfapi/cpdf_modulemgr.h" |
| #include "core/fpdfapi/font/cpdf_type3char.h" |
| #include "core/fpdfapi/font/cpdf_type3font.h" |
| #include "core/fpdfapi/page/cpdf_docpagedata.h" |
| #include "core/fpdfapi/page/cpdf_form.h" |
| #include "core/fpdfapi/page/cpdf_formobject.h" |
| #include "core/fpdfapi/page/cpdf_graphicstates.h" |
| #include "core/fpdfapi/page/cpdf_image.h" |
| #include "core/fpdfapi/page/cpdf_imageobject.h" |
| #include "core/fpdfapi/page/cpdf_page.h" |
| #include "core/fpdfapi/page/cpdf_pageobject.h" |
| #include "core/fpdfapi/page/cpdf_pathobject.h" |
| #include "core/fpdfapi/page/cpdf_textobject.h" |
| #include "core/fpdfapi/page/pageint.h" |
| #include "core/fpdfapi/parser/cpdf_array.h" |
| #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fpdfapi/render/cpdf_docrenderdata.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/fpdfapi/render/cpdf_type3cache.h" |
| #include "core/fpdfdoc/cpdf_occontext.h" |
| #include "core/fxge/cfx_fxgedevice.h" |
| #include "core/fxge/cfx_graphstatedata.h" |
| #include "core/fxge/cfx_pathdata.h" |
| #include "core/fxge/cfx_renderdevice.h" |
| |
| CPDF_RenderOptions::CPDF_RenderOptions() |
| : m_ColorMode(RENDER_COLOR_NORMAL), |
| m_Flags(RENDER_CLEARTYPE), |
| m_Interpolation(0), |
| m_AddFlags(0), |
| m_pOCContext(nullptr), |
| m_dwLimitCacheSize(1024 * 1024 * 100), |
| m_HalftoneLimit(-1), |
| m_bDrawAnnots(false) {} |
| |
| CPDF_RenderOptions::CPDF_RenderOptions(const CPDF_RenderOptions& rhs) |
| : m_ColorMode(rhs.m_ColorMode), |
| m_BackColor(rhs.m_BackColor), |
| m_ForeColor(rhs.m_ForeColor), |
| m_Flags(rhs.m_Flags), |
| m_Interpolation(rhs.m_Interpolation), |
| m_AddFlags(rhs.m_AddFlags), |
| m_pOCContext(rhs.m_pOCContext), |
| m_dwLimitCacheSize(rhs.m_dwLimitCacheSize), |
| m_HalftoneLimit(rhs.m_HalftoneLimit), |
| m_bDrawAnnots(rhs.m_bDrawAnnots) {} |
| |
| FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const { |
| if (m_ColorMode == RENDER_COLOR_NORMAL) { |
| return argb; |
| } |
| if (m_ColorMode == RENDER_COLOR_ALPHA) { |
| return argb; |
| } |
| int a, r, g, b; |
| ArgbDecode(argb, a, r, g, b); |
| int gray = FXRGB2GRAY(r, g, b); |
| if (m_ColorMode == RENDER_COLOR_TWOCOLOR) { |
| int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) + |
| (b - gray) * (b - gray); |
| if (gray < 35 && color < 20) { |
| return ArgbEncode(a, m_ForeColor); |
| } |
| if (gray > 221 && color < 20) { |
| return ArgbEncode(a, m_BackColor); |
| } |
| return argb; |
| } |
| int fr = FXSYS_GetRValue(m_ForeColor); |
| int fg = FXSYS_GetGValue(m_ForeColor); |
| int fb = FXSYS_GetBValue(m_ForeColor); |
| int br = FXSYS_GetRValue(m_BackColor); |
| int bg = FXSYS_GetGValue(m_BackColor); |
| int bb = FXSYS_GetBValue(m_BackColor); |
| r = (br - fr) * gray / 255 + fr; |
| g = (bg - fg) * gray / 255 + fg; |
| b = (bb - fb) * gray / 255 + fb; |
| return ArgbEncode(a, r, g, b); |
| } |
| |
| void CPDF_RenderContext::GetBackground(CFX_DIBitmap* pBuffer, |
| const CPDF_PageObject* pObj, |
| const CPDF_RenderOptions* pOptions, |
| CFX_Matrix* pFinalMatrix) { |
| CFX_FxgeDevice 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); |
| } |
| |
| CPDF_RenderContext::CPDF_RenderContext(CPDF_Page* pPage) |
| : m_pDocument(pPage->m_pDocument), |
| m_pPageResources(pPage->m_pPageResources), |
| 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::AppendLayer(CPDF_PageObjectHolder* pObjectHolder, |
| const CFX_Matrix* pObject2Device) { |
| Layer* pLayer = m_Layers.AddSpace(); |
| pLayer->m_pObjectHolder = pObjectHolder; |
| if (pObject2Device) { |
| pLayer->m_Matrix = *pObject2Device; |
| } else { |
| pLayer->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) { |
| int count = m_Layers.GetSize(); |
| for (int j = 0; j < count; j++) { |
| pDevice->SaveState(); |
| Layer* pLayer = m_Layers.GetDataPtr(j); |
| if (pLastMatrix) { |
| CFX_Matrix FinalMatrix = pLayer->m_Matrix; |
| FinalMatrix.Concat(*pLastMatrix); |
| CPDF_RenderStatus status; |
| status.Initialize(this, pDevice, pLastMatrix, pStopObj, nullptr, nullptr, |
| pOptions, pLayer->m_pObjectHolder->m_Transparency, |
| false, nullptr); |
| status.RenderObjectList(pLayer->m_pObjectHolder, &FinalMatrix); |
| if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { |
| m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); |
| } |
| if (status.m_bStopped) { |
| pDevice->RestoreState(false); |
| break; |
| } |
| } else { |
| CPDF_RenderStatus status; |
| status.Initialize(this, pDevice, nullptr, pStopObj, nullptr, nullptr, |
| pOptions, pLayer->m_pObjectHolder->m_Transparency, |
| false, nullptr); |
| status.RenderObjectList(pLayer->m_pObjectHolder, &pLayer->m_Matrix); |
| if (status.m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { |
| m_pPageCache->CacheOptimization(status.m_Options.m_dwLimitCacheSize); |
| } |
| if (status.m_bStopped) { |
| pDevice->RestoreState(false); |
| break; |
| } |
| } |
| pDevice->RestoreState(false); |
| } |
| } |
| |
| CPDF_ProgressiveRenderer::CPDF_ProgressiveRenderer( |
| CPDF_RenderContext* pContext, |
| CFX_RenderDevice* pDevice, |
| const CPDF_RenderOptions* pOptions) |
| : m_Status(Ready), |
| m_pContext(pContext), |
| m_pDevice(pDevice), |
| m_pOptions(pOptions), |
| m_LayerIndex(0), |
| m_pCurrentLayer(nullptr) {} |
| |
| CPDF_ProgressiveRenderer::~CPDF_ProgressiveRenderer() { |
| if (m_pRenderStatus) |
| m_pDevice->RestoreState(false); |
| } |
| |
| void CPDF_ProgressiveRenderer::Start(IFX_Pause* pPause) { |
| if (!m_pContext || !m_pDevice || m_Status != Ready) { |
| m_Status = Failed; |
| return; |
| } |
| m_Status = ToBeContinued; |
| Continue(pPause); |
| } |
| |
| void CPDF_ProgressiveRenderer::Continue(IFX_Pause* pPause) { |
| while (m_Status == ToBeContinued) { |
| if (!m_pCurrentLayer) { |
| if (m_LayerIndex >= m_pContext->CountLayers()) { |
| m_Status = Done; |
| return; |
| } |
| m_pCurrentLayer = m_pContext->GetLayer(m_LayerIndex); |
| m_LastObjectRendered = |
| m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end(); |
| m_pRenderStatus.reset(new CPDF_RenderStatus()); |
| m_pRenderStatus->Initialize( |
| m_pContext, m_pDevice, nullptr, nullptr, nullptr, nullptr, m_pOptions, |
| m_pCurrentLayer->m_pObjectHolder->m_Transparency, false, nullptr); |
| m_pDevice->SaveState(); |
| m_ClipRect = CFX_FloatRect(m_pDevice->GetClipBox()); |
| CFX_Matrix device2object; |
| device2object.SetReverse(m_pCurrentLayer->m_Matrix); |
| device2object.TransformRect(m_ClipRect); |
| } |
| CPDF_PageObjectList::iterator iter; |
| CPDF_PageObjectList::iterator iterEnd = |
| m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->end(); |
| if (m_LastObjectRendered != iterEnd) { |
| iter = m_LastObjectRendered; |
| ++iter; |
| } else { |
| iter = m_pCurrentLayer->m_pObjectHolder->GetPageObjectList()->begin(); |
| } |
| int nObjsToGo = kStepLimit; |
| while (iter != iterEnd) { |
| CPDF_PageObject* pCurObj = iter->get(); |
| if (pCurObj && pCurObj->m_Left <= m_ClipRect.right && |
| pCurObj->m_Right >= m_ClipRect.left && |
| pCurObj->m_Bottom <= m_ClipRect.top && |
| pCurObj->m_Top >= m_ClipRect.bottom) { |
| if (m_pRenderStatus->ContinueSingleObject( |
| pCurObj, &m_pCurrentLayer->m_Matrix, pPause)) { |
| return; |
| } |
| if (pCurObj->IsImage() && |
| m_pRenderStatus->m_Options.m_Flags & RENDER_LIMITEDIMAGECACHE) { |
| m_pContext->GetPageCache()->CacheOptimization( |
| m_pRenderStatus->m_Options.m_dwLimitCacheSize); |
| } |
| if (pCurObj->IsForm() || pCurObj->IsShading()) { |
| nObjsToGo = 0; |
| } else { |
| --nObjsToGo; |
| } |
| } |
| m_LastObjectRendered = iter; |
| if (nObjsToGo == 0) { |
| if (pPause && pPause->NeedToPauseNow()) |
| return; |
| nObjsToGo = kStepLimit; |
| } |
| ++iter; |
| } |
| if (m_pCurrentLayer->m_pObjectHolder->IsParsed()) { |
| m_pRenderStatus.reset(); |
| m_pDevice->RestoreState(false); |
| m_pCurrentLayer = nullptr; |
| m_LayerIndex++; |
| if (pPause && pPause->NeedToPauseNow()) { |
| return; |
| } |
| } else { |
| m_pCurrentLayer->m_pObjectHolder->ContinueParse(pPause); |
| if (!m_pCurrentLayer->m_pObjectHolder->IsParsed()) |
| return; |
| } |
| } |
| } |
| |
| CPDF_DeviceBuffer::CPDF_DeviceBuffer() |
| : m_pDevice(nullptr), m_pContext(nullptr), m_pObject(nullptr) {} |
| |
| CPDF_DeviceBuffer::~CPDF_DeviceBuffer() {} |
| |
| bool CPDF_DeviceBuffer::Initialize(CPDF_RenderContext* pContext, |
| CFX_RenderDevice* pDevice, |
| FX_RECT* pRect, |
| const CPDF_PageObject* pObj, |
| int max_dpi) { |
| m_pDevice = pDevice; |
| m_pContext = pContext; |
| m_Rect = *pRect; |
| m_pObject = pObj; |
| m_Matrix.TranslateI(-pRect->left, -pRect->top); |
| #if _FXM_PLATFORM_ != _FXM_PLATFORM_APPLE_ |
| int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE); |
| int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE); |
| if (horz_size && vert_size && max_dpi) { |
| int dpih = |
| pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10); |
| int dpiv = |
| pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10); |
| if (dpih > max_dpi) { |
| m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f); |
| } |
| if (dpiv > max_dpi) { |
| m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv); |
| } |
| } |
| #endif |
| CFX_Matrix ctm = m_pDevice->GetCTM(); |
| FX_FLOAT fScaleX = FXSYS_fabs(ctm.a); |
| FX_FLOAT fScaleY = FXSYS_fabs(ctm.d); |
| m_Matrix.Concat(fScaleX, 0, 0, fScaleY, 0, 0); |
| CFX_FloatRect rect(*pRect); |
| m_Matrix.TransformRect(rect); |
| FX_RECT bitmap_rect = rect.GetOuterRect(); |
| m_pBitmap.reset(new CFX_DIBitmap); |
| m_pBitmap->Create(bitmap_rect.Width(), bitmap_rect.Height(), FXDIB_Argb); |
| return true; |
| } |
| void CPDF_DeviceBuffer::OutputToDevice() { |
| if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) { |
| if (m_Matrix.a == 1.0f && m_Matrix.d == 1.0f) { |
| m_pDevice->SetDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top); |
| } else { |
| m_pDevice->StretchDIBits(m_pBitmap.get(), m_Rect.left, m_Rect.top, |
| m_Rect.Width(), m_Rect.Height()); |
| } |
| } else { |
| CFX_DIBitmap buffer; |
| m_pDevice->CreateCompatibleBitmap(&buffer, m_pBitmap->GetWidth(), |
| m_pBitmap->GetHeight()); |
| m_pContext->GetBackground(&buffer, m_pObject, nullptr, &m_Matrix); |
| buffer.CompositeBitmap(0, 0, buffer.GetWidth(), buffer.GetHeight(), |
| m_pBitmap.get(), 0, 0); |
| m_pDevice->StretchDIBits(&buffer, m_Rect.left, m_Rect.top, m_Rect.Width(), |
| m_Rect.Height()); |
| } |
| } |
| |
| CPDF_ScaledRenderBuffer::CPDF_ScaledRenderBuffer() {} |
| |
| CPDF_ScaledRenderBuffer::~CPDF_ScaledRenderBuffer() {} |
| |
| #define _FPDFAPI_IMAGESIZE_LIMIT_ (30 * 1024 * 1024) |
| bool CPDF_ScaledRenderBuffer::Initialize(CPDF_RenderContext* pContext, |
| CFX_RenderDevice* pDevice, |
| const FX_RECT& pRect, |
| const CPDF_PageObject* pObj, |
| const CPDF_RenderOptions* pOptions, |
| int max_dpi) { |
| m_pDevice = pDevice; |
| if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_GET_BITS) { |
| return true; |
| } |
| m_pContext = pContext; |
| m_Rect = pRect; |
| m_pObject = pObj; |
| m_Matrix.TranslateI(-pRect.left, -pRect.top); |
| int horz_size = pDevice->GetDeviceCaps(FXDC_HORZ_SIZE); |
| int vert_size = pDevice->GetDeviceCaps(FXDC_VERT_SIZE); |
| if (horz_size && vert_size && max_dpi) { |
| int dpih = |
| pDevice->GetDeviceCaps(FXDC_PIXEL_WIDTH) * 254 / (horz_size * 10); |
| int dpiv = |
| pDevice->GetDeviceCaps(FXDC_PIXEL_HEIGHT) * 254 / (vert_size * 10); |
| if (dpih > max_dpi) { |
| m_Matrix.Scale((FX_FLOAT)(max_dpi) / dpih, 1.0f); |
| } |
| if (dpiv > max_dpi) { |
| m_Matrix.Scale(1.0f, (FX_FLOAT)(max_dpi) / (FX_FLOAT)dpiv); |
| } |
| } |
| m_pBitmapDevice.reset(new CFX_FxgeDevice); |
| FXDIB_Format dibFormat = FXDIB_Rgb; |
| int32_t bpp = 24; |
| if (m_pDevice->GetDeviceCaps(FXDC_RENDER_CAPS) & FXRC_ALPHA_OUTPUT) { |
| dibFormat = FXDIB_Argb; |
| bpp = 32; |
| } |
| while (1) { |
| CFX_FloatRect rect(pRect); |
| m_Matrix.TransformRect(rect); |
| FX_RECT bitmap_rect = rect.GetOuterRect(); |
| int32_t iWidth = bitmap_rect.Width(); |
| int32_t iHeight = bitmap_rect.Height(); |
| int32_t iPitch = (iWidth * bpp + 31) / 32 * 4; |
| if (iWidth * iHeight < 1) |
| return false; |
| |
| if (iPitch * iHeight <= _FPDFAPI_IMAGESIZE_LIMIT_ && |
| m_pBitmapDevice->Create(iWidth, iHeight, dibFormat, nullptr)) { |
| break; |
| } |
| m_Matrix.Scale(0.5f, 0.5f); |
| } |
| m_pContext->GetBackground(m_pBitmapDevice->GetBitmap(), m_pObject, pOptions, |
| &m_Matrix); |
| return true; |
| } |
| void CPDF_ScaledRenderBuffer::OutputToDevice() { |
| if (m_pBitmapDevice) { |
| m_pDevice->StretchDIBits(m_pBitmapDevice->GetBitmap(), m_Rect.left, |
| m_Rect.top, m_Rect.Width(), m_Rect.Height()); |
| } |
| } |
