| // 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/fpdf_render/render_int.h" |
| |
| #include <utility> |
| #include <vector> |
| |
| #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h" |
| #include "core/fpdfapi/fpdf_page/cpdf_tilingpattern.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_form.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_image.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_imageobject.h" |
| #include "core/fpdfapi/fpdf_page/include/cpdf_page.h" |
| #include "core/fpdfapi/fpdf_page/pageint.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" |
| #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h" |
| #include "core/fpdfapi/fpdf_render/cpdf_pagerendercache.h" |
| #include "core/fpdfapi/fpdf_render/include/cpdf_rendercontext.h" |
| #include "core/fpdfapi/fpdf_render/include/cpdf_renderoptions.h" |
| #include "core/fpdfdoc/include/fpdf_doc.h" |
| #include "core/fxcodec/include/fx_codec.h" |
| #include "core/fxcrt/include/fx_safe_types.h" |
| #include "core/fxge/include/fx_ge.h" |
| |
| FX_BOOL CPDF_RenderStatus::ProcessImage(const CPDF_ImageObject* pImageObj, |
| const CFX_Matrix* pObj2Device) { |
| CPDF_ImageRenderer render; |
| if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend)) { |
| render.Continue(NULL); |
| } |
| return render.m_Result; |
| } |
| void CPDF_RenderStatus::CompositeDIBitmap(CFX_DIBitmap* pDIBitmap, |
| int left, |
| int top, |
| FX_ARGB mask_argb, |
| int bitmap_alpha, |
| int blend_mode, |
| int Transparency) { |
| if (!pDIBitmap) { |
| return; |
| } |
| if (blend_mode == FXDIB_BLEND_NORMAL) { |
| if (!pDIBitmap->IsAlphaMask()) { |
| if (bitmap_alpha < 255) { |
| pDIBitmap->MultiplyAlpha(bitmap_alpha); |
| } |
| if (m_pDevice->SetDIBits(pDIBitmap, left, top)) { |
| return; |
| } |
| } else { |
| uint32_t fill_argb = m_Options.TranslateColor(mask_argb); |
| if (bitmap_alpha < 255) { |
| ((uint8_t*)&fill_argb)[3] = |
| ((uint8_t*)&fill_argb)[3] * bitmap_alpha / 255; |
| } |
| if (m_pDevice->SetBitMask(pDIBitmap, left, top, fill_argb)) { |
| return; |
| } |
| } |
| } |
| bool bIsolated = !!(Transparency & PDFTRANS_ISOLATED); |
| bool bGroup = !!(Transparency & PDFTRANS_GROUP); |
| bool bBackAlphaRequired = blend_mode && bIsolated && !m_bDropObjects; |
| bool bGetBackGround = |
| ((m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT)) || |
| (!(m_pDevice->GetRenderCaps() & FXRC_ALPHA_OUTPUT) && |
| (m_pDevice->GetRenderCaps() & FXRC_GET_BITS) && !bBackAlphaRequired); |
| if (bGetBackGround) { |
| if (bIsolated || !bGroup) { |
| if (pDIBitmap->IsAlphaMask()) { |
| return; |
| } |
| m_pDevice->SetDIBits(pDIBitmap, left, top, blend_mode); |
| } else { |
| FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), |
| top + pDIBitmap->GetHeight()); |
| rect.Intersect(m_pDevice->GetClipBox()); |
| CFX_DIBitmap* pClone = NULL; |
| FX_BOOL bClone = FALSE; |
| if (m_pDevice->GetBackDrop() && m_pDevice->GetBitmap()) { |
| bClone = TRUE; |
| pClone = m_pDevice->GetBackDrop()->Clone(&rect); |
| CFX_DIBitmap* pForeBitmap = m_pDevice->GetBitmap(); |
| pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), |
| pForeBitmap, rect.left, rect.top); |
| left = left >= 0 ? 0 : left; |
| top = top >= 0 ? 0 : top; |
| if (!pDIBitmap->IsAlphaMask()) |
| pClone->CompositeBitmap(0, 0, pClone->GetWidth(), pClone->GetHeight(), |
| pDIBitmap, left, top, blend_mode); |
| else |
| pClone->CompositeMask(0, 0, pClone->GetWidth(), pClone->GetHeight(), |
| pDIBitmap, mask_argb, left, top, blend_mode); |
| } else { |
| pClone = pDIBitmap; |
| } |
| if (m_pDevice->GetBackDrop()) { |
| m_pDevice->SetDIBits(pClone, rect.left, rect.top); |
| } else { |
| if (pDIBitmap->IsAlphaMask()) { |
| return; |
| } |
| m_pDevice->SetDIBits(pDIBitmap, rect.left, rect.top, blend_mode); |
| } |
| if (bClone) { |
| delete pClone; |
| } |
| } |
| return; |
| } |
| int back_left, back_top; |
| FX_RECT rect(left, top, left + pDIBitmap->GetWidth(), |
| top + pDIBitmap->GetHeight()); |
| std::unique_ptr<CFX_DIBitmap> pBackdrop( |
| GetBackdrop(m_pCurObj, rect, back_left, back_top, |
| blend_mode > FXDIB_BLEND_NORMAL && bIsolated)); |
| if (!pBackdrop) |
| return; |
| |
| if (!pDIBitmap->IsAlphaMask()) { |
| pBackdrop->CompositeBitmap(left - back_left, top - back_top, |
| pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), |
| pDIBitmap, 0, 0, blend_mode); |
| } else { |
| pBackdrop->CompositeMask(left - back_left, top - back_top, |
| pDIBitmap->GetWidth(), pDIBitmap->GetHeight(), |
| pDIBitmap, mask_argb, 0, 0, blend_mode); |
| } |
| |
| std::unique_ptr<CFX_DIBitmap> pBackdrop1(new CFX_DIBitmap); |
| pBackdrop1->Create(pBackdrop->GetWidth(), pBackdrop->GetHeight(), |
| FXDIB_Rgb32); |
| pBackdrop1->Clear((uint32_t)-1); |
| pBackdrop1->CompositeBitmap(0, 0, pBackdrop->GetWidth(), |
| pBackdrop->GetHeight(), pBackdrop.get(), 0, 0); |
| pBackdrop = std::move(pBackdrop1); |
| m_pDevice->SetDIBits(pBackdrop.get(), back_left, back_top); |
| } |
| |
| CPDF_TransferFunc::CPDF_TransferFunc(CPDF_Document* pDoc) : m_pPDFDoc(pDoc) {} |
| |
| FX_COLORREF CPDF_TransferFunc::TranslateColor(FX_COLORREF rgb) const { |
| return FXSYS_RGB(m_Samples[FXSYS_GetRValue(rgb)], |
| m_Samples[256 + FXSYS_GetGValue(rgb)], |
| m_Samples[512 + FXSYS_GetBValue(rgb)]); |
| } |
| |
| CFX_DIBSource* CPDF_TransferFunc::TranslateImage(const CFX_DIBSource* pSrc, |
| FX_BOOL bAutoDropSrc) { |
| CPDF_DIBTransferFunc* pDest = new CPDF_DIBTransferFunc(this); |
| pDest->LoadSrc(pSrc, bAutoDropSrc); |
| return pDest; |
| } |
| |
| CPDF_DIBTransferFunc::~CPDF_DIBTransferFunc() {} |
| |
| FXDIB_Format CPDF_DIBTransferFunc::GetDestFormat() { |
| if (m_pSrc->IsAlphaMask()) { |
| return FXDIB_8bppMask; |
| } |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| return (m_pSrc->HasAlpha()) ? FXDIB_Argb : FXDIB_Rgb32; |
| #else |
| return (m_pSrc->HasAlpha()) ? FXDIB_Argb : FXDIB_Rgb; |
| #endif |
| } |
| CPDF_DIBTransferFunc::CPDF_DIBTransferFunc( |
| const CPDF_TransferFunc* pTransferFunc) { |
| m_RampR = pTransferFunc->m_Samples; |
| m_RampG = &pTransferFunc->m_Samples[256]; |
| m_RampB = &pTransferFunc->m_Samples[512]; |
| } |
| void CPDF_DIBTransferFunc::TranslateScanline(uint8_t* dest_buf, |
| const uint8_t* src_buf) const { |
| int i; |
| FX_BOOL bSkip = FALSE; |
| switch (m_pSrc->GetFormat()) { |
| case FXDIB_1bppRgb: { |
| int r0 = m_RampR[0], g0 = m_RampG[0], b0 = m_RampB[0]; |
| int r1 = m_RampR[255], g1 = m_RampG[255], b1 = m_RampB[255]; |
| for (i = 0; i < m_Width; i++) { |
| if (src_buf[i / 8] & (1 << (7 - i % 8))) { |
| *dest_buf++ = b1; |
| *dest_buf++ = g1; |
| *dest_buf++ = r1; |
| } else { |
| *dest_buf++ = b0; |
| *dest_buf++ = g0; |
| *dest_buf++ = r0; |
| } |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| dest_buf++; |
| #endif |
| } |
| break; |
| } |
| case FXDIB_1bppMask: { |
| int m0 = m_RampR[0], m1 = m_RampR[255]; |
| for (i = 0; i < m_Width; i++) { |
| if (src_buf[i / 8] & (1 << (7 - i % 8))) { |
| *dest_buf++ = m1; |
| } else { |
| *dest_buf++ = m0; |
| } |
| } |
| break; |
| } |
| case FXDIB_8bppRgb: { |
| FX_ARGB* pPal = m_pSrc->GetPalette(); |
| for (i = 0; i < m_Width; i++) { |
| if (pPal) { |
| FX_ARGB src_argb = pPal[*src_buf]; |
| *dest_buf++ = m_RampB[FXARGB_R(src_argb)]; |
| *dest_buf++ = m_RampG[FXARGB_G(src_argb)]; |
| *dest_buf++ = m_RampR[FXARGB_B(src_argb)]; |
| } else { |
| uint32_t src_byte = *src_buf; |
| *dest_buf++ = m_RampB[src_byte]; |
| *dest_buf++ = m_RampG[src_byte]; |
| *dest_buf++ = m_RampR[src_byte]; |
| } |
| src_buf++; |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| dest_buf++; |
| #endif |
| } |
| break; |
| } |
| case FXDIB_8bppMask: |
| for (i = 0; i < m_Width; i++) { |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| } |
| break; |
| case FXDIB_Rgb: |
| for (i = 0; i < m_Width; i++) { |
| *dest_buf++ = m_RampB[*(src_buf++)]; |
| *dest_buf++ = m_RampG[*(src_buf++)]; |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| dest_buf++; |
| #endif |
| } |
| break; |
| case FXDIB_Rgb32: |
| bSkip = TRUE; |
| case FXDIB_Argb: |
| for (i = 0; i < m_Width; i++) { |
| *dest_buf++ = m_RampB[*(src_buf++)]; |
| *dest_buf++ = m_RampG[*(src_buf++)]; |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| if (!bSkip) { |
| *dest_buf++ = *src_buf; |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| } else { |
| dest_buf++; |
| #endif |
| } |
| src_buf++; |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| void CPDF_DIBTransferFunc::TranslateDownSamples(uint8_t* dest_buf, |
| const uint8_t* src_buf, |
| int pixels, |
| int Bpp) const { |
| if (Bpp == 8) { |
| for (int i = 0; i < pixels; i++) { |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| } |
| } else if (Bpp == 24) { |
| for (int i = 0; i < pixels; i++) { |
| *dest_buf++ = m_RampB[*(src_buf++)]; |
| *dest_buf++ = m_RampG[*(src_buf++)]; |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| } |
| } else { |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| if (!m_pSrc->HasAlpha()) { |
| for (int i = 0; i < pixels; i++) { |
| *dest_buf++ = m_RampB[*(src_buf++)]; |
| *dest_buf++ = m_RampG[*(src_buf++)]; |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| dest_buf++; |
| src_buf++; |
| } |
| } else { |
| #endif |
| for (int i = 0; i < pixels; i++) { |
| *dest_buf++ = m_RampB[*(src_buf++)]; |
| *dest_buf++ = m_RampG[*(src_buf++)]; |
| *dest_buf++ = m_RampR[*(src_buf++)]; |
| *dest_buf++ = *(src_buf++); |
| } |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| } |
| #endif |
| } |
| } |
| CPDF_ImageRenderer::CPDF_ImageRenderer() { |
| m_pRenderStatus = NULL; |
| m_pImageObject = NULL; |
| m_Result = TRUE; |
| m_Status = 0; |
| m_pTransformer = NULL; |
| m_DeviceHandle = NULL; |
| m_LoadHandle = NULL; |
| m_pClone = NULL; |
| m_bStdCS = FALSE; |
| m_bPatternColor = FALSE; |
| m_BlendType = FXDIB_BLEND_NORMAL; |
| m_pPattern = NULL; |
| m_pObj2Device = NULL; |
| } |
| CPDF_ImageRenderer::~CPDF_ImageRenderer() { |
| delete m_pTransformer; |
| if (m_DeviceHandle) { |
| m_pRenderStatus->m_pDevice->CancelDIBits(m_DeviceHandle); |
| } |
| delete m_LoadHandle; |
| delete m_pClone; |
| } |
| FX_BOOL CPDF_ImageRenderer::StartLoadDIBSource() { |
| CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect(); |
| FX_RECT image_rect = image_rect_f.GetOutterRect(); |
| int dest_width = image_rect.Width(); |
| int dest_height = image_rect.Height(); |
| if (m_ImageMatrix.a < 0) { |
| dest_width = -dest_width; |
| } |
| if (m_ImageMatrix.d > 0) { |
| dest_height = -dest_height; |
| } |
| if (m_Loader.Start(m_pImageObject, |
| m_pRenderStatus->m_pContext->GetPageCache(), m_LoadHandle, |
| m_bStdCS, m_pRenderStatus->m_GroupFamily, |
| m_pRenderStatus->m_bLoadMask, m_pRenderStatus, dest_width, |
| dest_height)) { |
| if (m_LoadHandle) { |
| m_Status = 4; |
| return TRUE; |
| } |
| } |
| return FALSE; |
| } |
| FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource() { |
| if (!m_Loader.m_pBitmap) { |
| return FALSE; |
| } |
| m_BitmapAlpha = 255; |
| const CPDF_GeneralStateData* pGeneralState = m_pImageObject->m_GeneralState; |
| if (pGeneralState) { |
| m_BitmapAlpha = FXSYS_round(pGeneralState->m_FillAlpha * 255); |
| } |
| m_pDIBSource = m_Loader.m_pBitmap; |
| if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_ALPHA && |
| !m_Loader.m_pMask) { |
| return StartBitmapAlpha(); |
| } |
| if (pGeneralState && pGeneralState->m_pTR) { |
| if (!pGeneralState->m_pTransferFunc) { |
| ((CPDF_GeneralStateData*)pGeneralState)->m_pTransferFunc = |
| m_pRenderStatus->GetTransferFunc(pGeneralState->m_pTR); |
| } |
| if (pGeneralState->m_pTransferFunc && |
| !pGeneralState->m_pTransferFunc->m_bIdentity) { |
| m_pDIBSource = m_Loader.m_pBitmap = |
| pGeneralState->m_pTransferFunc->TranslateImage(m_Loader.m_pBitmap, |
| !m_Loader.m_bCached); |
| if (m_Loader.m_bCached && m_Loader.m_pMask) { |
| m_Loader.m_pMask = m_Loader.m_pMask->Clone(); |
| } |
| m_Loader.m_bCached = FALSE; |
| } |
| } |
| m_FillArgb = 0; |
| m_bPatternColor = FALSE; |
| m_pPattern = NULL; |
| if (m_pDIBSource->IsAlphaMask()) { |
| CPDF_Color* pColor = m_pImageObject->m_ColorState.GetFillColor(); |
| if (pColor && pColor->IsPattern()) { |
| m_pPattern = pColor->GetPattern(); |
| if (m_pPattern) { |
| m_bPatternColor = TRUE; |
| } |
| } |
| m_FillArgb = m_pRenderStatus->GetFillArgb(m_pImageObject); |
| } else if (m_pRenderStatus->m_Options.m_ColorMode == RENDER_COLOR_GRAY) { |
| m_pClone = m_pDIBSource->Clone(); |
| m_pClone->ConvertColorScale(m_pRenderStatus->m_Options.m_BackColor, |
| m_pRenderStatus->m_Options.m_ForeColor); |
| m_pDIBSource = m_pClone; |
| } |
| m_Flags = 0; |
| if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE) { |
| m_Flags |= RENDER_FORCE_DOWNSAMPLE; |
| } else if (m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE) { |
| m_Flags |= RENDER_FORCE_HALFTONE; |
| } |
| if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) { |
| CPDF_Object* pFilters = |
| m_pImageObject->m_pImage->GetStream()->GetDict()->GetDirectObjectBy( |
| "Filter"); |
| if (pFilters) { |
| if (pFilters->IsName()) { |
| CFX_ByteString bsDecodeType = pFilters->GetString(); |
| if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") { |
| m_Flags |= FXRENDER_IMAGE_LOSSY; |
| } |
| } else if (CPDF_Array* pArray = pFilters->AsArray()) { |
| for (size_t i = 0; i < pArray->GetCount(); i++) { |
| CFX_ByteString bsDecodeType = pArray->GetStringAt(i); |
| if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") { |
| m_Flags |= FXRENDER_IMAGE_LOSSY; |
| break; |
| } |
| } |
| } |
| } |
| } |
| if (m_pRenderStatus->m_Options.m_Flags & RENDER_NOIMAGESMOOTH) { |
| m_Flags |= FXDIB_NOSMOOTH; |
| } else if (m_pImageObject->m_pImage->IsInterpol()) { |
| m_Flags |= FXDIB_INTERPOL; |
| } |
| if (m_Loader.m_pMask) { |
| return DrawMaskedImage(); |
| } |
| if (m_bPatternColor) { |
| return DrawPatternImage(m_pObj2Device); |
| } |
| if (m_BitmapAlpha == 255 && pGeneralState && pGeneralState->m_FillOP && |
| pGeneralState->m_OPMode == 0 && |
| pGeneralState->m_BlendType == FXDIB_BLEND_NORMAL && |
| pGeneralState->m_StrokeAlpha == 1 && pGeneralState->m_FillAlpha == 1) { |
| CPDF_Document* pDocument = NULL; |
| CPDF_Page* pPage = NULL; |
| if (m_pRenderStatus->m_pContext->GetPageCache()) { |
| pPage = m_pRenderStatus->m_pContext->GetPageCache()->GetPage(); |
| pDocument = pPage->m_pDocument; |
| } else { |
| pDocument = m_pImageObject->m_pImage->GetDocument(); |
| } |
| CPDF_Dictionary* pPageResources = pPage ? pPage->m_pPageResources : NULL; |
| CPDF_Object* pCSObj = |
| m_pImageObject->m_pImage->GetStream()->GetDict()->GetDirectObjectBy( |
| "ColorSpace"); |
| CPDF_ColorSpace* pColorSpace = |
| pDocument->LoadColorSpace(pCSObj, pPageResources); |
| if (pColorSpace) { |
| int format = pColorSpace->GetFamily(); |
| if (format == PDFCS_DEVICECMYK || format == PDFCS_SEPARATION || |
| format == PDFCS_DEVICEN) { |
| m_BlendType = FXDIB_BLEND_DARKEN; |
| } |
| pDocument->GetPageData()->ReleaseColorSpace(pCSObj); |
| } |
| } |
| return StartDIBSource(); |
| } |
| FX_BOOL CPDF_ImageRenderer::Start(CPDF_RenderStatus* pStatus, |
| const CPDF_PageObject* pObj, |
| const CFX_Matrix* pObj2Device, |
| FX_BOOL bStdCS, |
| int blendType) { |
| m_pRenderStatus = pStatus; |
| m_bStdCS = bStdCS; |
| m_pImageObject = pObj->AsImage(); |
| m_BlendType = blendType; |
| m_pObj2Device = pObj2Device; |
| CPDF_Dictionary* pOC = m_pImageObject->m_pImage->GetOC(); |
| if (pOC && m_pRenderStatus->m_Options.m_pOCContext && |
| !m_pRenderStatus->m_Options.m_pOCContext->CheckOCGVisible(pOC)) { |
| return FALSE; |
| } |
| m_ImageMatrix = m_pImageObject->m_Matrix; |
| m_ImageMatrix.Concat(*pObj2Device); |
| if (StartLoadDIBSource()) { |
| return TRUE; |
| } |
| return StartRenderDIBSource(); |
| } |
| FX_BOOL CPDF_ImageRenderer::Start(CPDF_RenderStatus* pStatus, |
| const CFX_DIBSource* pDIBSource, |
| FX_ARGB bitmap_argb, |
| int bitmap_alpha, |
| const CFX_Matrix* pImage2Device, |
| uint32_t flags, |
| FX_BOOL bStdCS, |
| int blendType) { |
| m_pRenderStatus = pStatus; |
| m_pDIBSource = pDIBSource; |
| m_FillArgb = bitmap_argb; |
| m_BitmapAlpha = bitmap_alpha; |
| m_ImageMatrix = *pImage2Device; |
| m_Flags = flags; |
| m_bStdCS = bStdCS; |
| m_BlendType = blendType; |
| return StartDIBSource(); |
| } |
| FX_BOOL CPDF_ImageRenderer::DrawPatternImage(const CFX_Matrix* pObj2Device) { |
| if (m_pRenderStatus->m_bPrint && |
| !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { |
| m_Result = FALSE; |
| return FALSE; |
| } |
| FX_RECT rect = m_ImageMatrix.GetUnitRect().GetOutterRect(); |
| rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox()); |
| if (rect.IsEmpty()) { |
| return FALSE; |
| } |
| CFX_Matrix new_matrix = m_ImageMatrix; |
| new_matrix.TranslateI(-rect.left, -rect.top); |
| int width = rect.Width(); |
| int height = rect.Height(); |
| CFX_FxgeDevice bitmap_device1; |
| if (!bitmap_device1.Create(rect.Width(), rect.Height(), FXDIB_Rgb32)) { |
| return TRUE; |
| } |
| bitmap_device1.GetBitmap()->Clear(0xffffff); |
| { |
| CPDF_RenderStatus bitmap_render; |
| bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL, |
| NULL, NULL, NULL, &m_pRenderStatus->m_Options, 0, |
| m_pRenderStatus->m_bDropObjects, NULL, TRUE); |
| CFX_Matrix patternDevice = *pObj2Device; |
| patternDevice.Translate((FX_FLOAT)-rect.left, (FX_FLOAT)-rect.top); |
| if (CPDF_TilingPattern* pTilingPattern = m_pPattern->AsTilingPattern()) { |
| bitmap_render.DrawTilingPattern(pTilingPattern, m_pImageObject, |
| &patternDevice, FALSE); |
| } else if (CPDF_ShadingPattern* pShadingPattern = |
| m_pPattern->AsShadingPattern()) { |
| bitmap_render.DrawShadingPattern(pShadingPattern, m_pImageObject, |
| &patternDevice, FALSE); |
| } |
| } |
| { |
| CFX_FxgeDevice bitmap_device2; |
| if (!bitmap_device2.Create(rect.Width(), rect.Height(), FXDIB_8bppRgb)) { |
| return TRUE; |
| } |
| bitmap_device2.GetBitmap()->Clear(0); |
| CPDF_RenderStatus bitmap_render; |
| bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL, |
| NULL, NULL, NULL, NULL, 0, |
| m_pRenderStatus->m_bDropObjects, NULL, TRUE); |
| CPDF_ImageRenderer image_render; |
| if (image_render.Start(&bitmap_render, m_pDIBSource, 0xffffffff, 255, |
| &new_matrix, m_Flags, TRUE)) { |
| image_render.Continue(NULL); |
| } |
| if (m_Loader.m_MatteColor != 0xffffffff) { |
| int matte_r = FXARGB_R(m_Loader.m_MatteColor); |
| int matte_g = FXARGB_G(m_Loader.m_MatteColor); |
| int matte_b = FXARGB_B(m_Loader.m_MatteColor); |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_scan = |
| (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row); |
| const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row); |
| for (int col = 0; col < width; col++) { |
| int alpha = *mask_scan++; |
| if (alpha) { |
| int orig = (*dest_scan - matte_b) * 255 / alpha + matte_b; |
| if (orig < 0) { |
| orig = 0; |
| } else if (orig > 255) { |
| orig = 255; |
| } |
| *dest_scan++ = orig; |
| orig = (*dest_scan - matte_g) * 255 / alpha + matte_g; |
| if (orig < 0) { |
| orig = 0; |
| } else if (orig > 255) { |
| orig = 255; |
| } |
| *dest_scan++ = orig; |
| orig = (*dest_scan - matte_r) * 255 / alpha + matte_r; |
| if (orig < 0) { |
| orig = 0; |
| } else if (orig > 255) { |
| orig = 255; |
| } |
| *dest_scan++ = orig; |
| dest_scan++; |
| } else { |
| dest_scan += 4; |
| } |
| } |
| } |
| } |
| bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask); |
| bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap()); |
| bitmap_device1.GetBitmap()->MultiplyAlpha(255); |
| } |
| m_pRenderStatus->m_pDevice->SetDIBits(bitmap_device1.GetBitmap(), rect.left, |
| rect.top, m_BlendType); |
| return FALSE; |
| } |
| FX_BOOL CPDF_ImageRenderer::DrawMaskedImage() { |
| if (m_pRenderStatus->m_bPrint && |
| !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { |
| m_Result = FALSE; |
| return FALSE; |
| } |
| FX_RECT rect = m_ImageMatrix.GetUnitRect().GetOutterRect(); |
| rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox()); |
| if (rect.IsEmpty()) { |
| return FALSE; |
| } |
| CFX_Matrix new_matrix = m_ImageMatrix; |
| new_matrix.TranslateI(-rect.left, -rect.top); |
| int width = rect.Width(); |
| int height = rect.Height(); |
| CFX_FxgeDevice bitmap_device1; |
| if (!bitmap_device1.Create(width, height, FXDIB_Rgb32)) { |
| return TRUE; |
| } |
| bitmap_device1.GetBitmap()->Clear(0xffffff); |
| { |
| CPDF_RenderStatus bitmap_render; |
| bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device1, NULL, |
| NULL, NULL, NULL, NULL, 0, |
| m_pRenderStatus->m_bDropObjects, NULL, TRUE); |
| CPDF_ImageRenderer image_render; |
| if (image_render.Start(&bitmap_render, m_pDIBSource, 0, 255, &new_matrix, |
| m_Flags, TRUE)) { |
| image_render.Continue(NULL); |
| } |
| } |
| { |
| CFX_FxgeDevice bitmap_device2; |
| if (!bitmap_device2.Create(width, height, FXDIB_8bppRgb)) { |
| return TRUE; |
| } |
| bitmap_device2.GetBitmap()->Clear(0); |
| CPDF_RenderStatus bitmap_render; |
| bitmap_render.Initialize(m_pRenderStatus->m_pContext, &bitmap_device2, NULL, |
| NULL, NULL, NULL, NULL, 0, |
| m_pRenderStatus->m_bDropObjects, NULL, TRUE); |
| CPDF_ImageRenderer image_render; |
| if (image_render.Start(&bitmap_render, m_Loader.m_pMask, 0xffffffff, 255, |
| &new_matrix, m_Flags, TRUE)) { |
| image_render.Continue(NULL); |
| } |
| if (m_Loader.m_MatteColor != 0xffffffff) { |
| int matte_r = FXARGB_R(m_Loader.m_MatteColor); |
| int matte_g = FXARGB_G(m_Loader.m_MatteColor); |
| int matte_b = FXARGB_B(m_Loader.m_MatteColor); |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_scan = |
| (uint8_t*)bitmap_device1.GetBitmap()->GetScanline(row); |
| const uint8_t* mask_scan = bitmap_device2.GetBitmap()->GetScanline(row); |
| for (int col = 0; col < width; col++) { |
| int alpha = *mask_scan++; |
| if (alpha) { |
| int orig = (*dest_scan - matte_b) * 255 / alpha + matte_b; |
| if (orig < 0) { |
| orig = 0; |
| } else if (orig > 255) { |
| orig = 255; |
| } |
| *dest_scan++ = orig; |
| orig = (*dest_scan - matte_g) * 255 / alpha + matte_g; |
| if (orig < 0) { |
| orig = 0; |
| } else if (orig > 255) { |
| orig = 255; |
| } |
| *dest_scan++ = orig; |
| orig = (*dest_scan - matte_r) * 255 / alpha + matte_r; |
| if (orig < 0) { |
| orig = 0; |
| } else if (orig > 255) { |
| orig = 255; |
| } |
| *dest_scan++ = orig; |
| dest_scan++; |
| } else { |
| dest_scan += 4; |
| } |
| } |
| } |
| } |
| bitmap_device2.GetBitmap()->ConvertFormat(FXDIB_8bppMask); |
| bitmap_device1.GetBitmap()->MultiplyAlpha(bitmap_device2.GetBitmap()); |
| if (m_BitmapAlpha < 255) { |
| bitmap_device1.GetBitmap()->MultiplyAlpha(m_BitmapAlpha); |
| } |
| } |
| m_pRenderStatus->m_pDevice->SetDIBits(bitmap_device1.GetBitmap(), rect.left, |
| rect.top, m_BlendType); |
| return FALSE; |
| } |
| |
| FX_BOOL CPDF_ImageRenderer::StartDIBSource() { |
| if (!(m_Flags & RENDER_FORCE_DOWNSAMPLE) && m_pDIBSource->GetBPP() > 1) { |
| int image_size = m_pDIBSource->GetBPP() / 8 * m_pDIBSource->GetWidth() * |
| m_pDIBSource->GetHeight(); |
| if (image_size > FPDF_HUGE_IMAGE_SIZE && |
| !(m_Flags & RENDER_FORCE_HALFTONE)) { |
| m_Flags |= RENDER_FORCE_DOWNSAMPLE; |
| } |
| } |
| if (m_pRenderStatus->m_pDevice->StartDIBits( |
| m_pDIBSource, m_BitmapAlpha, m_FillArgb, &m_ImageMatrix, m_Flags, |
| m_DeviceHandle, 0, nullptr, m_BlendType)) { |
| if (m_DeviceHandle) { |
| m_Status = 3; |
| return TRUE; |
| } |
| return FALSE; |
| } |
| CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect(); |
| FX_RECT image_rect = image_rect_f.GetOutterRect(); |
| int dest_width = image_rect.Width(); |
| int dest_height = image_rect.Height(); |
| if ((FXSYS_fabs(m_ImageMatrix.b) >= 0.5f || m_ImageMatrix.a == 0) || |
| (FXSYS_fabs(m_ImageMatrix.c) >= 0.5f || m_ImageMatrix.d == 0)) { |
| if (m_pRenderStatus->m_bPrint && |
| !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { |
| m_Result = FALSE; |
| return FALSE; |
| } |
| FX_RECT clip_box = m_pRenderStatus->m_pDevice->GetClipBox(); |
| clip_box.Intersect(image_rect); |
| m_Status = 2; |
| m_pTransformer = new CFX_ImageTransformer(m_pDIBSource, &m_ImageMatrix, |
| m_Flags, &clip_box); |
| m_pTransformer->Start(); |
| return TRUE; |
| } |
| if (m_ImageMatrix.a < 0) |
| dest_width = -dest_width; |
| |
| if (m_ImageMatrix.d > 0) |
| dest_height = -dest_height; |
| |
| int dest_left = dest_width > 0 ? image_rect.left : image_rect.right; |
| int dest_top = dest_height > 0 ? image_rect.top : image_rect.bottom; |
| if (m_pDIBSource->IsOpaqueImage() && m_BitmapAlpha == 255) { |
| if (m_pRenderStatus->m_pDevice->StretchDIBits( |
| m_pDIBSource, dest_left, dest_top, dest_width, dest_height, m_Flags, |
| nullptr, m_BlendType)) { |
| return FALSE; |
| } |
| } |
| if (m_pDIBSource->IsAlphaMask()) { |
| if (m_BitmapAlpha != 255) |
| m_FillArgb = FXARGB_MUL_ALPHA(m_FillArgb, m_BitmapAlpha); |
| if (m_pRenderStatus->m_pDevice->StretchBitMask( |
| m_pDIBSource, dest_left, dest_top, dest_width, dest_height, |
| m_FillArgb, m_Flags)) { |
| return FALSE; |
| } |
| } |
| if (m_pRenderStatus->m_bPrint && |
| !(m_pRenderStatus->m_pDevice->GetRenderCaps() & FXRC_BLEND_MODE)) { |
| m_Result = FALSE; |
| return TRUE; |
| } |
| |
| FX_RECT clip_box = m_pRenderStatus->m_pDevice->GetClipBox(); |
| FX_RECT dest_rect = clip_box; |
| dest_rect.Intersect(image_rect); |
| FX_RECT dest_clip( |
| dest_rect.left - image_rect.left, dest_rect.top - image_rect.top, |
| dest_rect.right - image_rect.left, dest_rect.bottom - image_rect.top); |
| std::unique_ptr<CFX_DIBitmap> pStretched( |
| m_pDIBSource->StretchTo(dest_width, dest_height, m_Flags, &dest_clip)); |
| if (pStretched) { |
| m_pRenderStatus->CompositeDIBitmap(pStretched.get(), dest_rect.left, |
| dest_rect.top, m_FillArgb, m_BitmapAlpha, |
| m_BlendType, FALSE); |
| } |
| return FALSE; |
| } |
| |
| FX_BOOL CPDF_ImageRenderer::StartBitmapAlpha() { |
| if (m_pDIBSource->IsOpaqueImage()) { |
| CFX_PathData path; |
| path.AppendRect(0, 0, 1, 1); |
| path.Transform(&m_ImageMatrix); |
| uint32_t fill_color = |
| ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha); |
| m_pRenderStatus->m_pDevice->DrawPath(&path, NULL, NULL, fill_color, 0, |
| FXFILL_WINDING); |
| } else { |
| const CFX_DIBSource* pAlphaMask = m_pDIBSource->IsAlphaMask() |
| ? m_pDIBSource |
| : m_pDIBSource->GetAlphaMask(); |
| if (FXSYS_fabs(m_ImageMatrix.b) >= 0.5f || |
| FXSYS_fabs(m_ImageMatrix.c) >= 0.5f) { |
| int left, top; |
| std::unique_ptr<CFX_DIBitmap> pTransformed( |
| pAlphaMask->TransformTo(&m_ImageMatrix, left, top)); |
| if (!pTransformed) |
| return TRUE; |
| |
| m_pRenderStatus->m_pDevice->SetBitMask( |
| pTransformed.get(), left, top, |
| ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha)); |
| } else { |
| CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect(); |
| FX_RECT image_rect = image_rect_f.GetOutterRect(); |
| int dest_width = |
| m_ImageMatrix.a > 0 ? image_rect.Width() : -image_rect.Width(); |
| int dest_height = |
| m_ImageMatrix.d > 0 ? -image_rect.Height() : image_rect.Height(); |
| int left = dest_width > 0 ? image_rect.left : image_rect.right; |
| int top = dest_height > 0 ? image_rect.top : image_rect.bottom; |
| m_pRenderStatus->m_pDevice->StretchBitMask( |
| pAlphaMask, left, top, dest_width, dest_height, |
| ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha)); |
| } |
| if (m_pDIBSource != pAlphaMask) { |
| delete pAlphaMask; |
| } |
| } |
| return FALSE; |
| } |
| |
| FX_BOOL CPDF_ImageRenderer::Continue(IFX_Pause* pPause) { |
| if (m_Status == 2) { |
| if (m_pTransformer->Continue(pPause)) |
| return TRUE; |
| |
| std::unique_ptr<CFX_DIBitmap> pBitmap(m_pTransformer->DetachBitmap()); |
| if (!pBitmap) |
| return FALSE; |
| |
| if (pBitmap->IsAlphaMask()) { |
| if (m_BitmapAlpha != 255) |
| m_FillArgb = FXARGB_MUL_ALPHA(m_FillArgb, m_BitmapAlpha); |
| m_Result = m_pRenderStatus->m_pDevice->SetBitMask( |
| pBitmap.get(), m_pTransformer->result().left, |
| m_pTransformer->result().top, m_FillArgb); |
| } else { |
| if (m_BitmapAlpha != 255) |
| pBitmap->MultiplyAlpha(m_BitmapAlpha); |
| m_Result = m_pRenderStatus->m_pDevice->SetDIBits( |
| pBitmap.get(), m_pTransformer->result().left, |
| m_pTransformer->result().top, m_BlendType); |
| } |
| return FALSE; |
| } |
| if (m_Status == 3) |
| return m_pRenderStatus->m_pDevice->ContinueDIBits(m_DeviceHandle, pPause); |
| |
| if (m_Status == 4) { |
| if (m_Loader.Continue(m_LoadHandle, pPause)) |
| return TRUE; |
| |
| if (StartRenderDIBSource()) |
| return Continue(pPause); |
| } |
| return FALSE; |
| } |
| |
| CCodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( |
| const uint8_t* src_buf, |
| uint32_t src_size, |
| int width, |
| int height, |
| int nComps, |
| int bpc, |
| const CPDF_Dictionary* pParams); |
| |
| CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict, |
| FX_RECT* pClipRect, |
| const CFX_Matrix* pMatrix) { |
| if (!pSMaskDict) |
| return nullptr; |
| |
| CPDF_Stream* pGroup = pSMaskDict->GetStreamBy("G"); |
| if (!pGroup) |
| return nullptr; |
| |
| std::unique_ptr<CPDF_Function> pFunc; |
| CPDF_Object* pFuncObj = pSMaskDict->GetDirectObjectBy("TR"); |
| if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream())) |
| pFunc = CPDF_Function::Load(pFuncObj); |
| |
| CFX_Matrix matrix = *pMatrix; |
| matrix.TranslateI(-pClipRect->left, -pClipRect->top); |
| |
| CPDF_Form form(m_pContext->GetDocument(), m_pContext->GetPageResources(), |
| pGroup); |
| form.ParseContent(nullptr, nullptr, nullptr); |
| |
| CFX_FxgeDevice bitmap_device; |
| FX_BOOL bLuminosity = pSMaskDict->GetStringBy("S") != "Alpha"; |
| int width = pClipRect->right - pClipRect->left; |
| int height = pClipRect->bottom - pClipRect->top; |
| #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ |
| if (!bitmap_device.Create(width, height, |
| bLuminosity ? FXDIB_Rgb32 : FXDIB_8bppMask)) { |
| return NULL; |
| } |
| #else |
| if (!bitmap_device.Create(width, height, |
| bLuminosity ? FXDIB_Rgb : FXDIB_8bppMask)) { |
| return NULL; |
| } |
| #endif |
| CFX_DIBitmap& bitmap = *bitmap_device.GetBitmap(); |
| CPDF_Object* pCSObj = NULL; |
| CPDF_ColorSpace* pCS = NULL; |
| if (bLuminosity) { |
| CPDF_Array* pBC = pSMaskDict->GetArrayBy("BC"); |
| FX_ARGB back_color = 0xff000000; |
| if (pBC) { |
| CPDF_Dictionary* pDict = pGroup->GetDict(); |
| if (pDict && pDict->GetDictBy("Group")) |
| pCSObj = pDict->GetDictBy("Group")->GetDirectObjectBy("CS"); |
| else |
| pCSObj = NULL; |
| pCS = m_pContext->GetDocument()->LoadColorSpace(pCSObj); |
| if (pCS) { |
| FX_FLOAT R, G, B; |
| uint32_t comps = 8; |
| if (pCS->CountComponents() > comps) { |
| comps = pCS->CountComponents(); |
| } |
| CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps); |
| FX_FLOAT* pFloats = float_array; |
| FX_SAFE_UINT32 num_floats = comps; |
| num_floats *= sizeof(FX_FLOAT); |
| if (!num_floats.IsValid()) { |
| return NULL; |
| } |
| FXSYS_memset(pFloats, 0, num_floats.ValueOrDie()); |
| size_t count = pBC->GetCount() > 8 ? 8 : pBC->GetCount(); |
| for (size_t i = 0; i < count; i++) { |
| pFloats[i] = pBC->GetNumberAt(i); |
| } |
| pCS->GetRGB(pFloats, R, G, B); |
| back_color = 0xff000000 | ((int32_t)(R * 255) << 16) | |
| ((int32_t)(G * 255) << 8) | (int32_t)(B * 255); |
| m_pContext->GetDocument()->GetPageData()->ReleaseColorSpace(pCSObj); |
| } |
| } |
| bitmap.Clear(back_color); |
| } else { |
| bitmap.Clear(0); |
| } |
| CPDF_Dictionary* pFormResource = NULL; |
| if (form.m_pFormDict) { |
| pFormResource = form.m_pFormDict->GetDictBy("Resources"); |
| } |
| CPDF_RenderOptions options; |
| options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA; |
| CPDF_RenderStatus status; |
| status.Initialize(m_pContext, &bitmap_device, NULL, NULL, NULL, NULL, |
| &options, 0, m_bDropObjects, pFormResource, TRUE, NULL, 0, |
| pCS ? pCS->GetFamily() : 0, bLuminosity); |
| status.RenderObjectList(&form, &matrix); |
| std::unique_ptr<CFX_DIBitmap> pMask(new CFX_DIBitmap); |
| if (!pMask->Create(width, height, FXDIB_8bppMask)) |
| return nullptr; |
| |
| uint8_t* dest_buf = pMask->GetBuffer(); |
| int dest_pitch = pMask->GetPitch(); |
| uint8_t* src_buf = bitmap.GetBuffer(); |
| int src_pitch = bitmap.GetPitch(); |
| std::vector<uint8_t> transfers(256); |
| if (pFunc) { |
| CFX_FixedBufGrow<FX_FLOAT, 16> results(pFunc->CountOutputs()); |
| for (int i = 0; i < 256; i++) { |
| FX_FLOAT input = (FX_FLOAT)i / 255.0f; |
| int nresult; |
| pFunc->Call(&input, 1, results, nresult); |
| transfers[i] = FXSYS_round(results[0] * 255); |
| } |
| } else { |
| for (int i = 0; i < 256; i++) { |
| transfers[i] = i; |
| } |
| } |
| if (bLuminosity) { |
| int Bpp = bitmap.GetBPP() / 8; |
| for (int row = 0; row < height; row++) { |
| uint8_t* dest_pos = dest_buf + row * dest_pitch; |
| uint8_t* src_pos = src_buf + row * src_pitch; |
| for (int col = 0; col < width; col++) { |
| *dest_pos++ = transfers[FXRGB2GRAY(src_pos[2], src_pos[1], *src_pos)]; |
| src_pos += Bpp; |
| } |
| } |
| } else if (pFunc) { |
| int size = dest_pitch * height; |
| for (int i = 0; i < size; i++) { |
| dest_buf[i] = transfers[src_buf[i]]; |
| } |
| } else { |
| FXSYS_memcpy(dest_buf, src_buf, dest_pitch * height); |
| } |
| return pMask.release(); |
| } |
