diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp | 1165 |
1 files changed, 1165 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp new file mode 100644 index 0000000000..c2a7393739 --- /dev/null +++ b/core/src/fpdfapi/fpdf_render/fpdf_render_image.cpp @@ -0,0 +1,1165 @@ +// 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 "../../../include/fxge/fx_ge.h"
+#include "../../../include/fxcodec/fx_codec.h"
+#include "../../../include/fpdfapi/fpdf_module.h"
+#include "../../../include/fpdfapi/fpdf_render.h"
+#include "../../../include/fpdfapi/fpdf_pageobj.h"
+#include "../fpdf_page/pageint.h"
+#include "render_int.h"
+FX_BOOL CPDF_RenderStatus::ProcessImage(CPDF_ImageObject* pImageObj, const CFX_AffineMatrix* pObj2Device)
+{
+ CPDF_ImageRenderer render;
+ if (render.Start(this, pImageObj, pObj2Device, m_bStdCS, m_curBlend)) {
+ render.Continue(NULL);
+ }
+#ifdef _FPDFAPI_MINI_
+ if (m_DitherBits) {
+ DitherObjectArea(pImageObj, pObj2Device);
+ }
+#endif
+ return render.m_Result;
+}
+#if defined(_FPDFAPI_MINI_)
+FX_BOOL CPDF_RenderStatus::ProcessInlines(CPDF_InlineImages* pInlines, const CFX_AffineMatrix* pObj2Device)
+{
+ int bitmap_alpha = 255;
+ if (!pInlines->m_GeneralState.IsNull()) {
+ bitmap_alpha = FXSYS_round(pInlines->m_GeneralState.GetObject()->m_FillAlpha * 255);
+ }
+ if (pInlines->m_pStream) {
+ CPDF_DIBSource dibsrc;
+ if (!dibsrc.Load(m_pContext->m_pDocument, pInlines->m_pStream, NULL, NULL, NULL, NULL)) {
+ return TRUE;
+ }
+ pInlines->m_pBitmap = dibsrc.Clone();
+ pInlines->m_pStream->Release();
+ pInlines->m_pStream = NULL;
+ }
+ if (pInlines->m_pBitmap == NULL) {
+ return TRUE;
+ }
+ FX_ARGB fill_argb = 0;
+ if (pInlines->m_pBitmap->IsAlphaMask()) {
+ fill_argb = GetFillArgb(pInlines);
+ }
+ int flags = 0;
+ if (m_Options.m_Flags & RENDER_FORCE_DOWNSAMPLE) {
+ flags |= RENDER_FORCE_DOWNSAMPLE;
+ } else if (m_Options.m_Flags & RENDER_FORCE_HALFTONE) {
+ flags = 0;
+ }
+ for (int i = 0; i < pInlines->m_Matrices.GetSize(); i ++) {
+ CFX_AffineMatrix image_matrix = pInlines->m_Matrices.GetAt(i);
+ image_matrix.Concat(*pObj2Device);
+ CPDF_ImageRenderer renderer;
+ if (renderer.Start(this, pInlines->m_pBitmap, fill_argb, bitmap_alpha, &image_matrix, flags, FALSE, m_curBlend)) {
+ renderer.Continue(NULL);
+ }
+ }
+ return TRUE;
+}
+#endif
+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 == NULL) {
+ 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) {
+ ((FX_BYTE*)&fill_argb)[3] = ((FX_BYTE*)&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());
+ 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);
+ CFX_DIBitmap* pBackdrop1 = FX_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, 0, 0);
+ delete pBackdrop;
+ pBackdrop = pBackdrop1;
+ m_pDevice->SetDIBits(pBackdrop, back_left, back_top);
+ delete pBackdrop;
+}
+FX_COLORREF CPDF_TransferFunc::TranslateColor(FX_COLORREF rgb)
+{
+ 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 = FX_NEW CPDF_DIBTransferFunc(this);
+ pDest->LoadSrc(pSrc, bAutoDropSrc);
+ return pDest;
+}
+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(FX_LPBYTE dest_buf, FX_LPCBYTE 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(FX_LPBYTE dest_buf, FX_LPCBYTE 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++);
+ }
+ }
+}
+static FX_BOOL _IsSupported(CPDF_ColorSpace* pCS)
+{
+ if (pCS->GetFamily() == PDFCS_DEVICERGB || pCS->GetFamily() == PDFCS_DEVICEGRAY ||
+ pCS->GetFamily() == PDFCS_DEVICECMYK || pCS->GetFamily() == PDFCS_CALGRAY ||
+ pCS->GetFamily() == PDFCS_CALRGB) {
+ return TRUE;
+ }
+ if (pCS->GetFamily() == PDFCS_INDEXED && _IsSupported(pCS->GetBaseCS())) {
+ return TRUE;
+ }
+ return FALSE;
+}
+CPDF_ImageRenderer::CPDF_ImageRenderer()
+{
+ m_pRenderStatus = NULL;
+ m_pImageObject = NULL;
+ m_Result = TRUE;
+ m_Status = 0;
+ m_pQuickStretcher = NULL;
+ 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()
+{
+ if (m_pQuickStretcher) {
+ delete m_pQuickStretcher;
+ }
+ if (m_pTransformer) {
+ delete m_pTransformer;
+ }
+ if (m_DeviceHandle) {
+ m_pRenderStatus->m_pDevice->CancelDIBits(m_DeviceHandle);
+ }
+ if (m_LoadHandle) {
+ delete (CPDF_ProgressiveImageLoaderHandle*)m_LoadHandle;
+ }
+ if (m_pClone) {
+ 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.StartLoadImage(m_pImageObject, m_pRenderStatus->m_pContext->m_pPageCache, m_LoadHandle, m_bStdCS,
+ m_pRenderStatus->m_GroupFamily, m_pRenderStatus->m_bLoadMask, m_pRenderStatus, dest_width, dest_height)) {
+ if (m_LoadHandle != NULL) {
+ m_Status = 4;
+ return TRUE;
+ }
+ return FALSE;
+ }
+ return FALSE;
+}
+FX_BOOL CPDF_ImageRenderer::StartRenderDIBSource()
+{
+ if (m_Loader.m_pBitmap == NULL) {
+ 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 == NULL) {
+ return StartBitmapAlpha();
+ }
+#ifndef _FPDFAPI_MINI_
+ 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;
+ }
+ }
+#endif
+ 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 != NULL) {
+ 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 !defined(_FPDFAPI_MINI_)
+ 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;
+ }
+#else
+ if (!(m_pRenderStatus->m_Options.m_Flags & RENDER_FORCE_HALFTONE)) {
+ if (m_pRenderStatus->m_HalftoneLimit) {
+ CFX_FloatRect image_rect_f = m_ImageMatrix.GetUnitRect();
+ FX_RECT image_rect = image_rect_f.GetOutterRect();
+ FX_RECT image_clip = image_rect;
+ image_rect.Intersect(m_pRenderStatus->m_pDevice->GetClipBox());
+ if (image_rect.Width() && image_rect.Height()) {
+ if ((image_clip.Width() * m_pDIBSource->GetWidth() / image_rect.Width()) *
+ (image_clip.Height() * m_pDIBSource->GetHeight() / image_rect.Height()) >
+ m_pRenderStatus->m_HalftoneLimit) {
+ m_Flags |= RENDER_FORCE_DOWNSAMPLE;
+ }
+ }
+ } else {
+ m_Flags |= RENDER_FORCE_DOWNSAMPLE;
+ }
+ }
+#endif
+#ifndef _FPDFAPI_MINI_
+ if (m_pRenderStatus->m_pDevice->GetDeviceClass() != FXDC_DISPLAY) {
+ CPDF_Object* pFilters = m_pImageObject->m_pImage->GetStream()->GetDict()->GetElementValue(FX_BSTRC("Filter"));
+ if (pFilters) {
+ if (pFilters->GetType() == PDFOBJ_NAME) {
+ CFX_ByteStringC bsDecodeType = pFilters->GetConstString();
+ if (bsDecodeType == FX_BSTRC("DCTDecode") || bsDecodeType == FX_BSTRC("JPXDecode")) {
+ m_Flags |= FXRENDER_IMAGE_LOSSY;
+ }
+ } else if (pFilters->GetType() == PDFOBJ_ARRAY) {
+ CPDF_Array* pArray = (CPDF_Array*)pFilters;
+ for (FX_DWORD i = 0; i < pArray->GetCount(); i ++) {
+ CFX_ByteStringC bsDecodeType = pArray->GetConstString(i);
+ if (bsDecodeType == FX_BSTRC("DCTDecode") || bsDecodeType == FX_BSTRC("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;
+ }
+#endif
+ if (m_Loader.m_pMask) {
+ return DrawMaskedImage();
+ }
+ if (m_bPatternColor) {
+ return DrawPatternImage(m_pObj2Device);
+ }
+#if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
+ 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->m_pPageCache) {
+ pPage = m_pRenderStatus->m_pContext->m_pPageCache->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(FX_BSTRC("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);
+ }
+ }
+#endif
+ return StartDIBSource();
+}
+FX_BOOL CPDF_ImageRenderer::Start(CPDF_RenderStatus* pStatus, const CPDF_PageObject* pObj, const CFX_AffineMatrix* pObj2Device, FX_BOOL bStdCS, int blendType)
+{
+ m_pRenderStatus = pStatus;
+ m_bStdCS = bStdCS;
+ m_pImageObject = (CPDF_ImageObject*)pObj;
+ m_BlendType = blendType;
+ m_pObj2Device = pObj2Device;
+#ifndef _FPDFAPI_MINI_
+ 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;
+ }
+#endif
+ 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_AffineMatrix* 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_AffineMatrix 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_Level + 1, 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 == PATTERN_TILING) {
+ bitmap_render.DrawTilingPattern((CPDF_TilingPattern*)m_pPattern, m_pImageObject, &patternDevice, FALSE);
+ } else {
+ bitmap_render.DrawShadingPattern((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_Level + 1, 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 ++) {
+ FX_LPBYTE dest_scan = (FX_LPBYTE)bitmap_device1.GetBitmap()->GetScanline(row);
+ FX_LPCBYTE 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_AffineMatrix 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_Level + 1, 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_Level + 1, 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 ++) {
+ FX_LPBYTE dest_scan = (FX_LPBYTE)bitmap_device1.GetBitmap()->GetScanline(row);
+ FX_LPCBYTE 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 !defined(_FPDFAPI_MINI_)
+ 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;
+ }
+ }
+#endif
+ 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 != NULL) {
+ m_Status = 3;
+ return TRUE;
+ }
+ return FALSE;
+ }
+#if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
+ 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 = FX_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);
+ CFX_DIBitmap* pStretched = m_pDIBSource->StretchTo(dest_width, dest_height, m_Flags, &dest_clip);
+ if (pStretched) {
+ m_pRenderStatus->CompositeDIBitmap(pStretched, dest_rect.left, dest_rect.top, m_FillArgb,
+ m_BitmapAlpha, m_BlendType, FALSE);
+ delete pStretched;
+ pStretched = NULL;
+ }
+#endif
+ return FALSE;
+}
+FX_BOOL CPDF_ImageRenderer::StartBitmapAlpha()
+{
+#ifndef _FPDFAPI_MINI_
+ 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;
+ CFX_DIBitmap* pTransformed = pAlphaMask->TransformTo(&m_ImageMatrix, left, top);
+ if (pTransformed == NULL) {
+ return TRUE;
+ }
+ m_pRenderStatus->m_pDevice->SetBitMask(pTransformed, left, top, ArgbEncode(0xff, m_BitmapAlpha, m_BitmapAlpha, m_BitmapAlpha));
+ delete pTransformed;
+ } 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;
+ }
+ }
+#endif
+ return FALSE;
+}
+FX_BOOL CPDF_ImageRenderer::Continue(IFX_Pause* pPause)
+{
+ if (m_Status == 1) {
+#ifndef _FPDFAPI_MINI_
+ if (m_pQuickStretcher->Continue(pPause)) {
+ return TRUE;
+ }
+ if (m_pQuickStretcher->m_pBitmap->IsAlphaMask())
+ m_pRenderStatus->m_pDevice->SetBitMask(m_pQuickStretcher->m_pBitmap, m_pQuickStretcher->m_ResultLeft,
+ m_pQuickStretcher->m_ResultTop, m_FillArgb);
+ else
+ m_pRenderStatus->m_pDevice->SetDIBits(m_pQuickStretcher->m_pBitmap, m_pQuickStretcher->m_ResultLeft,
+ m_pQuickStretcher->m_ResultTop, m_BlendType);
+ return FALSE;
+#endif
+ } else if (m_Status == 2) {
+#if !defined(_FPDFAPI_MINI_) || defined(_FXCORE_FEATURE_ALL_)
+ if (m_pTransformer->Continue(pPause)) {
+ return TRUE;
+ }
+ CFX_DIBitmap* pBitmap = m_pTransformer->m_Storer.Detach();
+ if (pBitmap == NULL) {
+ 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;
+#endif
+ } else if (m_Status == 3) {
+ return m_pRenderStatus->m_pDevice->ContinueDIBits(m_DeviceHandle, pPause);
+ } else if (m_Status == 4) {
+ if (m_Loader.Continue(m_LoadHandle, pPause)) {
+ return TRUE;
+ }
+ if (StartRenderDIBSource()) {
+ return Continue(pPause);
+ }
+ return FALSE;
+ }
+ return FALSE;
+}
+CPDF_QuickStretcher::CPDF_QuickStretcher()
+{
+ m_pBitmap = NULL;
+ m_pDecoder = NULL;
+ m_pCS = NULL;
+}
+CPDF_QuickStretcher::~CPDF_QuickStretcher()
+{
+ if (m_pBitmap) {
+ delete m_pBitmap;
+ }
+ if (m_pCS) {
+ m_pCS->ReleaseCS();
+ }
+ if (m_pDecoder) {
+ delete m_pDecoder;
+ }
+}
+ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height,
+ int nComps, int bpc, const CPDF_Dictionary* pParams);
+FX_BOOL CPDF_QuickStretcher::Start(CPDF_ImageObject* pImageObj, CFX_AffineMatrix* pImage2Device, const FX_RECT* pClipBox)
+{
+ if (FXSYS_fabs(pImage2Device->a) < FXSYS_fabs(pImage2Device->b) * 10 && FXSYS_fabs(pImage2Device->d) < FXSYS_fabs(pImage2Device->c) * 10) {
+ return FALSE;
+ }
+ CFX_FloatRect image_rect_f = pImage2Device->GetUnitRect();
+ FX_RECT image_rect = image_rect_f.GetOutterRect();
+ m_DestWidth = image_rect.Width();
+ m_DestHeight = image_rect.Height();
+ m_bFlipX = pImage2Device->a < 0;
+ m_bFlipY = pImage2Device->d > 0;
+ FX_RECT result_rect = *pClipBox;
+ result_rect.Intersect(image_rect);
+ if (result_rect.IsEmpty()) {
+ return FALSE;
+ }
+ m_ResultWidth = result_rect.Width();
+ m_ResultHeight = result_rect.Height();
+ m_ResultLeft = result_rect.left;
+ m_ResultTop = result_rect.top;
+ m_ClipLeft = result_rect.left - image_rect.left;
+ m_ClipTop = result_rect.top - image_rect.top;
+ CPDF_Dictionary* pDict = pImageObj->m_pImage->GetDict();
+ if (pDict->GetInteger(FX_BSTRC("BitsPerComponent")) != 8) {
+ return FALSE;
+ }
+ if (pDict->KeyExist(FX_BSTRC("SMask")) || pDict->KeyExist(FX_BSTRC("Mask"))) {
+ return FALSE;
+ }
+ m_SrcWidth = pDict->GetInteger(FX_BSTRC("Width"));
+ m_SrcHeight = pDict->GetInteger(FX_BSTRC("Height"));
+ m_pCS = NULL;
+ m_Bpp = 3;
+ CPDF_Object* pCSObj = pDict->GetElementValue(FX_BSTRC("ColorSpace"));
+ if (pCSObj == NULL) {
+ return FALSE;
+ }
+ m_pCS = CPDF_ColorSpace::Load(pImageObj->m_pImage->GetDocument(), pCSObj);
+ if (m_pCS == NULL) {
+ return FALSE;
+ }
+ if (!_IsSupported(m_pCS)) {
+ return FALSE;
+ }
+ m_Bpp = m_pCS->CountComponents();
+ if (m_pCS->sRGB()) {
+ m_pCS->ReleaseCS();
+ m_pCS = NULL;
+ }
+ CPDF_Stream* pStream = pImageObj->m_pImage->GetStream();
+ m_StreamAcc.LoadAllData(pStream, FALSE, m_SrcWidth * m_SrcHeight * m_Bpp, TRUE);
+ m_pDecoder = NULL;
+ if (!m_StreamAcc.GetImageDecoder().IsEmpty()) {
+ if (m_StreamAcc.GetImageDecoder() == FX_BSTRC("DCTDecode")) {
+ const CPDF_Dictionary* pParam = m_StreamAcc.GetImageParam();
+ m_pDecoder = CPDF_ModuleMgr::Get()->GetJpegModule()->CreateDecoder(
+ m_StreamAcc.GetData(), m_StreamAcc.GetSize(), m_SrcWidth, m_SrcHeight, m_Bpp,
+ pParam ? pParam->GetInteger(FX_BSTRC("ColorTransform"), 1) : 1);
+ } else if (m_StreamAcc.GetImageDecoder() == FX_BSTRC("FlateDecode")) {
+ m_pDecoder = FPDFAPI_CreateFlateDecoder(
+ m_StreamAcc.GetData(), m_StreamAcc.GetSize(), m_SrcWidth, m_SrcHeight, m_Bpp, 8,
+ m_StreamAcc.GetImageParam());
+ } else {
+ return FALSE;
+ }
+ m_pDecoder->DownScale(m_DestWidth, m_DestHeight);
+ }
+ m_pBitmap = FX_NEW CFX_DIBitmap;
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+ m_pBitmap->Create(m_ResultWidth, m_ResultHeight, FXDIB_Rgb32);
+#else
+ m_pBitmap->Create(m_ResultWidth, m_ResultHeight, FXDIB_Rgb);
+#endif
+ m_LineIndex = 0;
+ return TRUE;
+}
+FX_BOOL CPDF_QuickStretcher::Continue(IFX_Pause* pPause)
+{
+ FX_LPBYTE result_buf = m_pBitmap->GetBuffer();
+ int src_width = m_pDecoder ? m_pDecoder->GetWidth() : m_SrcWidth;
+ int src_height = m_pDecoder ? m_pDecoder->GetHeight() : m_SrcHeight;
+ int src_pitch = src_width * m_Bpp;
+ while (m_LineIndex < m_ResultHeight) {
+ int dest_y, src_y;
+ if (m_bFlipY) {
+ dest_y = m_ResultHeight - m_LineIndex - 1;
+ src_y = (m_DestHeight - (dest_y + m_ClipTop) - 1) * src_height / m_DestHeight;
+ } else {
+ dest_y = m_LineIndex;
+ src_y = (dest_y + m_ClipTop) * src_height / m_DestHeight;
+ }
+ FX_LPCBYTE src_scan;
+ if (m_pDecoder) {
+ src_scan = m_pDecoder->GetScanline(src_y);
+ if (src_scan == NULL) {
+ break;
+ }
+ } else {
+ src_scan = m_StreamAcc.GetData();
+ if (src_scan == NULL) {
+ break;
+ }
+ src_scan += src_y * src_pitch;
+ }
+ FX_LPBYTE result_scan = result_buf + dest_y * m_pBitmap->GetPitch();
+ for (int x = 0; x < m_ResultWidth; x ++) {
+ int dest_x = m_ClipLeft + x;
+ int src_x = (m_bFlipX ? (m_DestWidth - dest_x - 1) : dest_x) * src_width / m_DestWidth;
+ FX_LPCBYTE src_pixel = src_scan + src_x * m_Bpp;
+ if (m_pCS == NULL) {
+ *result_scan = src_pixel[2];
+ result_scan ++;
+ *result_scan = src_pixel[1];
+ result_scan ++;
+ *result_scan = src_pixel[0];
+ result_scan ++;
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+ result_scan ++;
+#endif
+ } else {
+ m_pCS->TranslateImageLine(result_scan, src_pixel, 1, 0, 0);
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
+ result_scan += 4;
+#else
+ result_scan += 3;
+#endif
+ }
+ }
+ m_LineIndex ++;
+ if (pPause && pPause->NeedToPauseNow()) {
+ return TRUE;
+ }
+ }
+ return FALSE;
+}
+CFX_DIBitmap* CPDF_RenderStatus::LoadSMask(CPDF_Dictionary* pSMaskDict,
+ FX_RECT* pClipRect, const CFX_AffineMatrix* pMatrix)
+{
+ if (pSMaskDict == NULL) {
+ return NULL;
+ }
+ CFX_DIBitmap* pMask = NULL;
+ int width = pClipRect->right - pClipRect->left;
+ int height = pClipRect->bottom - pClipRect->top;
+ FX_BOOL bLuminosity = FALSE;
+ bLuminosity = pSMaskDict->GetConstString(FX_BSTRC("S")) != FX_BSTRC("Alpha");
+ CPDF_Stream* pGroup = pSMaskDict->GetStream(FX_BSTRC("G"));
+ if (pGroup == NULL) {
+ return NULL;
+ }
+ CPDF_Function* pFunc = NULL;
+ CPDF_Object* pFuncObj = pSMaskDict->GetElementValue(FX_BSTRC("TR"));
+ if (pFuncObj && (pFuncObj->GetType() == PDFOBJ_DICTIONARY || pFuncObj->GetType() == PDFOBJ_STREAM)) {
+ pFunc = CPDF_Function::Load(pFuncObj);
+ }
+ CFX_AffineMatrix matrix = *pMatrix;
+ matrix.TranslateI(-pClipRect->left, -pClipRect->top);
+ CPDF_Form form(m_pContext->m_pDocument, m_pContext->m_pPageResources, 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->GetArray(FX_BSTRC("BC"));
+ FX_ARGB back_color = 0xff000000;
+ if (pBC) {
+ pCSObj = pGroup->GetDict()->GetDict(FX_BSTRC("Group"))->GetElementValue(FX_BSTRC("CS"));
+ pCS = m_pContext->m_pDocument->LoadColorSpace(pCSObj);
+ if (pCS) {
+ FX_FLOAT R, G, B;
+ FX_DWORD num_floats = 8;
+ if (pCS->CountComponents() > (FX_INT32)num_floats) {
+ num_floats = (FX_DWORD)pCS->CountComponents();
+ }
+ CFX_FixedBufGrow<FX_FLOAT, 8> float_array(num_floats);
+ FX_FLOAT* pFloats = float_array;
+ FXSYS_memset32(pFloats, 0, num_floats * sizeof(FX_FLOAT));
+ int count = pBC->GetCount() > 8 ? 8 : pBC->GetCount();
+ for (int i = 0; i < count; i ++) {
+ pFloats[i] = pBC->GetNumber(i);
+ }
+ pCS->GetRGB(pFloats, R, G, B);
+ back_color = 0xff000000 | ((FX_INT32)(R * 255) << 16) | ((FX_INT32)(G * 255) << 8) | (FX_INT32)(B * 255);
+ m_pContext->m_pDocument->GetPageData()->ReleaseColorSpace(pCSObj);
+ }
+ }
+ bitmap.Clear(back_color);
+ } else {
+ bitmap.Clear(0);
+ }
+ CPDF_Dictionary* pFormResource = NULL;
+ if (form.m_pFormDict) {
+ pFormResource = form.m_pFormDict->GetDict(FX_BSTRC("Resources"));
+ }
+ CPDF_RenderOptions options;
+ options.m_ColorMode = bLuminosity ? RENDER_COLOR_NORMAL : RENDER_COLOR_ALPHA;
+ CPDF_RenderStatus status;
+ status.Initialize(m_Level + 1, 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);
+ pMask = FX_NEW CFX_DIBitmap;
+ if (!pMask->Create(width, height, FXDIB_8bppMask)) {
+ delete pMask;
+ return NULL;
+ }
+ FX_LPBYTE dest_buf = pMask->GetBuffer();
+ int dest_pitch = pMask->GetPitch();
+ FX_LPBYTE src_buf = bitmap.GetBuffer();
+ int src_pitch = bitmap.GetPitch();
+ FX_LPBYTE pTransfer = FX_Alloc(FX_BYTE, 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);
+ pTransfer[i] = FXSYS_round(results[0] * 255);
+ }
+ } else {
+ for (int i = 0; i < 256; i ++) {
+ pTransfer[i] = i;
+ }
+ }
+ if (bLuminosity) {
+ int Bpp = bitmap.GetBPP() / 8;
+ for (int row = 0; row < height; row ++) {
+ FX_LPBYTE dest_pos = dest_buf + row * dest_pitch;
+ FX_LPBYTE src_pos = src_buf + row * src_pitch;
+ for (int col = 0; col < width; col ++) {
+ *dest_pos ++ = pTransfer[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] = pTransfer[src_buf[i]];
+ }
+ } else {
+ FXSYS_memcpy32(dest_buf, src_buf, dest_pitch * height);
+ }
+ if (pFunc) {
+ delete pFunc;
+ }
+ FX_Free(pTransfer);
+ return pMask;
+}
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