diff options
Diffstat (limited to 'core/fpdfapi/fpdf_render/fpdf_render_image.cpp')
| -rw-r--r-- | core/fpdfapi/fpdf_render/fpdf_render_image.cpp | 998 |
1 files changed, 998 insertions, 0 deletions
diff --git a/core/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/fpdfapi/fpdf_render/fpdf_render_image.cpp new file mode 100644 index 0000000000..6c235a0258 --- /dev/null +++ b/core/fpdfapi/fpdf_render/fpdf_render_image.cpp @@ -0,0 +1,998 @@ +// 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/pageint.h" +#include "core/include/fpdfapi/cpdf_array.h" +#include "core/include/fpdfapi/cpdf_dictionary.h" +#include "core/include/fpdfapi/cpdf_document.h" +#include "core/include/fpdfapi/fpdf_module.h" +#include "core/include/fpdfapi/fpdf_pageobj.h" +#include "core/include/fpdfapi/fpdf_render.h" +#include "core/include/fxcodec/fx_codec.h" +#include "core/include/fxcrt/fx_safe_types.h" +#include "core/include/fxge/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; + } + FX_BOOL bIsolated = Transparency & PDFTRANS_ISOLATED; + FX_BOOL bGroup = Transparency & PDFTRANS_GROUP; + 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 { + FX_DWORD 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; + } + } + } + FX_BOOL bBackAlphaRequired = blend_mode && bIsolated && !m_bDropObjects; + FX_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((FX_DWORD)-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 { + FX_DWORD 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()->GetElementValue( + "Filter"); + if (pFilters) { + if (pFilters->IsName()) { + CFX_ByteStringC bsDecodeType = pFilters->GetConstString(); + if (bsDecodeType == "DCTDecode" || bsDecodeType == "JPXDecode") { + m_Flags |= FXRENDER_IMAGE_LOSSY; + } + } else if (CPDF_Array* pArray = pFilters->AsArray()) { + for (FX_DWORD i = 0; i < pArray->GetCount(); i++) { + CFX_ByteStringC bsDecodeType = pArray->GetConstStringAt(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()->GetElementValue( + "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, + FX_DWORD 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 (m_pPattern->m_PatternType == CPDF_Pattern::TILING) { + bitmap_render.DrawTilingPattern( + static_cast<CPDF_TilingPattern*>(m_pPattern), m_pImageObject, + &patternDevice, FALSE); + } else { + bitmap_render.DrawShadingPattern( + static_cast<CPDF_ShadingPattern*>(m_pPattern), 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, NULL, 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_pTransformer->Start(m_pDIBSource, &m_ImageMatrix, m_Flags, &clip_box); + return TRUE; + } + if (m_ImageMatrix.a < 0) { + dest_width = -dest_width; + } + if (m_ImageMatrix.d > 0) { + dest_height = -dest_height; + } + int dest_left, dest_top; + dest_left = dest_width > 0 ? image_rect.left : image_rect.right; + 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, + NULL, 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); + FX_DWORD 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; + } + CFX_DIBitmap* pBitmap = m_pTransformer->m_Storer.Detach(); + 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, m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop, + m_FillArgb); + } else { + if (m_BitmapAlpha != 255) { + pBitmap->MultiplyAlpha(m_BitmapAlpha); + } + m_Result = m_pRenderStatus->m_pDevice->SetDIBits( + pBitmap, m_pTransformer->m_ResultLeft, m_pTransformer->m_ResultTop, + m_BlendType); + } + delete pBitmap; + 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; +} +ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder( + const uint8_t* src_buf, + FX_DWORD 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 NULL; + } + int width = pClipRect->right - pClipRect->left; + int height = pClipRect->bottom - pClipRect->top; + FX_BOOL bLuminosity = FALSE; + bLuminosity = pSMaskDict->GetConstStringBy("S") != "Alpha"; + CPDF_Stream* pGroup = pSMaskDict->GetStreamBy("G"); + if (!pGroup) { + return NULL; + } + std::unique_ptr<CPDF_Function> pFunc; + CPDF_Object* pFuncObj = pSMaskDict->GetElementValue("TR"); + if (pFuncObj && (pFuncObj->IsDictionary() || pFuncObj->IsStream())) + pFunc.reset(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(NULL, NULL, NULL, NULL); + CFX_FxgeDevice bitmap_device; +#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")->GetElementValue("CS"); + else + pCSObj = NULL; + pCS = m_pContext->GetDocument()->LoadColorSpace(pCSObj); + if (pCS) { + FX_FLOAT R, G, B; + FX_DWORD comps = 8; + if (pCS->CountComponents() > comps) { + comps = pCS->CountComponents(); + } + CFX_FixedBufGrow<FX_FLOAT, 8> float_array(comps); + FX_FLOAT* pFloats = float_array; + FX_SAFE_DWORD num_floats = comps; + num_floats *= sizeof(FX_FLOAT); + if (!num_floats.IsValid()) { + return NULL; + } + FXSYS_memset(pFloats, 0, num_floats.ValueOrDie()); + int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount(); + for (int 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(); +} |