diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp')
| -rw-r--r-- | core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp new file mode 100644 index 0000000000..aee0367acb --- /dev/null +++ b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp @@ -0,0 +1,278 @@ +// 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/fpdfapi/fpdf_page.h"
+#include "pageint.h"
+CPDF_TilingPattern::CPDF_TilingPattern(CPDF_Document* pDoc, CPDF_Object* pPatternObj, const CFX_AffineMatrix* parentMatrix) :
+ CPDF_Pattern(parentMatrix)
+{
+ m_PatternType = PATTERN_TILING;
+ m_pPatternObj = pPatternObj;
+ m_pDocument = pDoc;
+ CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
+ ASSERT(pDict != NULL);
+ m_Pattern2Form = pDict->GetMatrix(FX_BSTRC("Matrix"));
+ m_bColored = pDict->GetInteger(FX_BSTRC("PaintType")) == 1;
+ if (parentMatrix) {
+ m_Pattern2Form.Concat(*parentMatrix);
+ }
+ m_pForm = NULL;
+}
+CPDF_TilingPattern::~CPDF_TilingPattern()
+{
+ if (m_pForm) {
+ delete m_pForm;
+ }
+}
+FX_BOOL CPDF_TilingPattern::Load()
+{
+ if (m_pForm != NULL) {
+ return TRUE;
+ }
+ CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
+ if (pDict == NULL) {
+ return FALSE;
+ }
+ m_bColored = pDict->GetInteger(FX_BSTRC("PaintType")) == 1;
+ m_XStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumber(FX_BSTRC("XStep")));
+ m_YStep = (FX_FLOAT)FXSYS_fabs(pDict->GetNumber(FX_BSTRC("YStep")));
+ if (m_pPatternObj->GetType() != PDFOBJ_STREAM) {
+ return FALSE;
+ }
+ CPDF_Stream* pStream = (CPDF_Stream*)m_pPatternObj;
+ m_pForm = FX_NEW CPDF_Form(m_pDocument, NULL, pStream);
+ m_pForm->ParseContent(NULL, &m_ParentMatrix, NULL, NULL);
+ m_BBox = pDict->GetRect(FX_BSTRC("BBox"));
+ return TRUE;
+}
+CPDF_ShadingPattern::CPDF_ShadingPattern(CPDF_Document* pDoc, CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* parentMatrix) : CPDF_Pattern(parentMatrix)
+{
+ m_PatternType = PATTERN_SHADING;
+ m_pPatternObj = bShading ? NULL : pPatternObj;
+ m_pDocument = pDoc;
+ m_bShadingObj = bShading;
+ if (!bShading) {
+ CPDF_Dictionary* pDict = m_pPatternObj->GetDict();
+ ASSERT(pDict != NULL);
+ m_Pattern2Form = pDict->GetMatrix(FX_BSTRC("Matrix"));
+ m_pShadingObj = pDict->GetElementValue(FX_BSTRC("Shading"));
+ if (parentMatrix) {
+ m_Pattern2Form.Concat(*parentMatrix);
+ }
+ } else {
+ m_pShadingObj = pPatternObj;
+ }
+ m_ShadingType = 0;
+ m_pCS = NULL;
+ m_nFuncs = 0;
+ for (int i = 0; i < 4; i ++) {
+ m_pFunctions[i] = NULL;
+ }
+}
+CPDF_ShadingPattern::~CPDF_ShadingPattern()
+{
+ Clear();
+}
+void CPDF_ShadingPattern::Clear()
+{
+ for (int i = 0; i < m_nFuncs; i ++) {
+ if (m_pFunctions[i]) {
+ delete m_pFunctions[i];
+ }
+ m_pFunctions[i] = NULL;
+ }
+ CPDF_ColorSpace* pCS = m_pCS;
+ if (pCS && m_pDocument) {
+ m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
+ }
+ m_ShadingType = 0;
+ m_pCS = NULL;
+ m_nFuncs = 0;
+}
+FX_BOOL CPDF_ShadingPattern::Load()
+{
+ if (m_ShadingType != 0) {
+ return TRUE;
+ }
+ CPDF_Dictionary* pShadingDict = m_pShadingObj->GetDict();
+ if (pShadingDict == NULL) {
+ return FALSE;
+ }
+ if (m_nFuncs) {
+ for (int i = 0; i < m_nFuncs; i ++)
+ if (m_pFunctions[i]) {
+ delete m_pFunctions[i];
+ }
+ m_nFuncs = 0;
+ }
+ CPDF_Object* pFunc = pShadingDict->GetElementValue(FX_BSTRC("Function"));
+ if (pFunc) {
+ if (pFunc->GetType() == PDFOBJ_ARRAY) {
+ m_nFuncs = ((CPDF_Array*)pFunc)->GetCount();
+ if (m_nFuncs > 4) {
+ m_nFuncs = 4;
+ }
+ for (int i = 0; i < m_nFuncs; i ++) {
+ m_pFunctions[i] = CPDF_Function::Load(((CPDF_Array*)pFunc)->GetElementValue(i));
+ }
+ } else {
+ m_pFunctions[0] = CPDF_Function::Load(pFunc);
+ m_nFuncs = 1;
+ }
+ }
+ CPDF_Object* pCSObj = pShadingDict->GetElementValue(FX_BSTRC("ColorSpace"));
+ if (pCSObj == NULL) {
+ return FALSE;
+ }
+ CPDF_DocPageData* pDocPageData = m_pDocument->GetPageData();
+ m_pCS = pDocPageData->GetColorSpace(pCSObj, NULL);
+ m_ShadingType = pShadingDict->GetInteger(FX_BSTRC("ShadingType"));
+ return TRUE;
+}
+FX_BOOL CPDF_ShadingPattern::Reload()
+{
+ Clear();
+ return Load();
+}
+FX_BOOL CPDF_MeshStream::Load(CPDF_Stream* pShadingStream, CPDF_Function** pFuncs, int nFuncs, CPDF_ColorSpace* pCS)
+{
+ m_Stream.LoadAllData(pShadingStream);
+ m_BitStream.Init(m_Stream.GetData(), m_Stream.GetSize());
+ m_pFuncs = pFuncs;
+ m_nFuncs = nFuncs;
+ m_pCS = pCS;
+ CPDF_Dictionary* pDict = pShadingStream->GetDict();
+ m_nCoordBits = pDict->GetInteger(FX_BSTRC("BitsPerCoordinate"));
+ m_nCompBits = pDict->GetInteger(FX_BSTRC("BitsPerComponent"));
+ m_nFlagBits = pDict->GetInteger(FX_BSTRC("BitsPerFlag"));
+ if (!m_nCoordBits || !m_nCompBits) {
+ return FALSE;
+ }
+ int nComps = pCS->CountComponents();
+ if (nComps > 8) {
+ return FALSE;
+ }
+ m_nComps = nFuncs ? 1 : nComps;
+ if (((int)m_nComps < 0) || m_nComps > 8) {
+ return FALSE;
+ }
+ m_CoordMax = m_nCoordBits == 32 ? -1 : (1 << m_nCoordBits) - 1;
+ m_CompMax = (1 << m_nCompBits) - 1;
+ CPDF_Array* pDecode = pDict->GetArray(FX_BSTRC("Decode"));
+ if (pDecode == NULL || pDecode->GetCount() != 4 + m_nComps * 2) {
+ return FALSE;
+ }
+ m_xmin = pDecode->GetNumber(0);
+ m_xmax = pDecode->GetNumber(1);
+ m_ymin = pDecode->GetNumber(2);
+ m_ymax = pDecode->GetNumber(3);
+ for (FX_DWORD i = 0; i < m_nComps; i ++) {
+ m_ColorMin[i] = pDecode->GetNumber(i * 2 + 4);
+ m_ColorMax[i] = pDecode->GetNumber(i * 2 + 5);
+ }
+ return TRUE;
+}
+FX_DWORD CPDF_MeshStream::GetFlag()
+{
+ return m_BitStream.GetBits(m_nFlagBits) & 0x03;
+}
+void CPDF_MeshStream::GetCoords(FX_FLOAT& x, FX_FLOAT& y)
+{
+ if (m_nCoordBits == 32) {
+ x = m_xmin + (FX_FLOAT)(m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) / (double)m_CoordMax);
+ y = m_ymin + (FX_FLOAT)(m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) / (double)m_CoordMax);
+ } else {
+ x = m_xmin + m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) / m_CoordMax;
+ y = m_ymin + m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) / m_CoordMax;
+ }
+}
+void CPDF_MeshStream::GetColor(FX_FLOAT& r, FX_FLOAT& g, FX_FLOAT& b)
+{
+ FX_DWORD i;
+ FX_FLOAT color_value[8];
+ for (i = 0; i < m_nComps; i ++) {
+ color_value[i] = m_ColorMin[i] + m_BitStream.GetBits(m_nCompBits) * (m_ColorMax[i] - m_ColorMin[i]) / m_CompMax;
+ }
+ if (m_nFuncs) {
+ static const int kMaxResults = 8;
+ FX_FLOAT result[kMaxResults];
+ int nResults;
+ FXSYS_memset32(result, 0, sizeof(result));
+ for (FX_DWORD i = 0; i < m_nFuncs; i ++) {
+ if (m_pFuncs[i] && m_pFuncs[i]->CountOutputs() <= kMaxResults) {
+ m_pFuncs[i]->Call(color_value, 1, result, nResults);
+ }
+ }
+ m_pCS->GetRGB(result, r, g, b);
+ } else {
+ m_pCS->GetRGB(color_value, r, g, b);
+ }
+}
+FX_DWORD CPDF_MeshStream::GetVertex(CPDF_MeshVertex& vertex, CFX_AffineMatrix* pObject2Bitmap)
+{
+ FX_DWORD flag = GetFlag();
+ GetCoords(vertex.x, vertex.y);
+ pObject2Bitmap->Transform(vertex.x, vertex.y);
+ GetColor(vertex.r, vertex.g, vertex.b);
+ m_BitStream.ByteAlign();
+ return flag;
+}
+FX_BOOL CPDF_MeshStream::GetVertexRow(CPDF_MeshVertex* vertex, int count, CFX_AffineMatrix* pObject2Bitmap)
+{
+ for (int i = 0; i < count; i ++) {
+ if (m_BitStream.IsEOF()) {
+ return FALSE;
+ }
+ GetCoords(vertex[i].x, vertex[i].y);
+ pObject2Bitmap->Transform(vertex[i].x, vertex[i].y);
+ GetColor(vertex[i].r, vertex[i].g, vertex[i].b);
+ m_BitStream.ByteAlign();
+ }
+ return TRUE;
+}
+CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream, int type, const CFX_AffineMatrix* pMatrix,
+ CPDF_Function** pFuncs, int nFuncs, CPDF_ColorSpace* pCS)
+{
+ if (pStream == NULL || pStream->GetType() != PDFOBJ_STREAM || pFuncs == NULL || pCS == NULL) {
+ return CFX_FloatRect(0, 0, 0, 0);
+ }
+ CPDF_MeshStream stream;
+ if (!stream.Load(pStream, pFuncs, nFuncs, pCS)) {
+ return CFX_FloatRect(0, 0, 0, 0);
+ }
+ CFX_FloatRect rect;
+ FX_BOOL bStarted = FALSE;
+ FX_BOOL bGouraud = type == 4 || type == 5;
+ int full_point_count = type == 7 ? 16 : (type == 6 ? 12 : 1);
+ int full_color_count = (type == 6 || type == 7) ? 4 : 1;
+ while (!stream.m_BitStream.IsEOF()) {
+ FX_DWORD flag;
+ if (type != 5) {
+ flag = stream.GetFlag();
+ }
+ int point_count = full_point_count, color_count = full_color_count;
+ if (!bGouraud && flag) {
+ point_count -= 4;
+ color_count -= 2;
+ }
+ for (int i = 0; i < point_count; i ++) {
+ FX_FLOAT x, y;
+ stream.GetCoords(x, y);
+ if (bStarted) {
+ rect.UpdateRect(x, y);
+ } else {
+ rect.InitRect(x, y);
+ bStarted = TRUE;
+ }
+ }
+ stream.m_BitStream.SkipBits(stream.m_nComps * stream.m_nCompBits * color_count);
+ if (bGouraud) {
+ stream.m_BitStream.ByteAlign();
+ }
+ }
+ rect.Transform(pMatrix);
+ return rect;
+}
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