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-rw-r--r--core/include/fpdfapi/fpdf_resource.h22
-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp23
-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp68
-rw-r--r--core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp24
4 files changed, 97 insertions, 40 deletions
diff --git a/core/include/fpdfapi/fpdf_resource.h b/core/include/fpdfapi/fpdf_resource.h
index 9fe6e2b95f..dee15cf941 100644
--- a/core/include/fpdfapi/fpdf_resource.h
+++ b/core/include/fpdfapi/fpdf_resource.h
@@ -679,6 +679,19 @@ class CPDF_TilingPattern : public CPDF_Pattern {
CPDF_Form* m_pForm;
};
+
+typedef enum {
+ kInvalidShading = 0,
+ kFunctionBasedShading = 1,
+ kAxialShading = 2,
+ kRadialShading = 3,
+ kFreeFormGouraudTriangleMeshShading = 4,
+ kLatticeFormGouraudTriangleMeshShading = 5,
+ kCoonsPatchMeshShading = 6,
+ kTensorProductPatchMeshShading = 7,
+ kMaxShading = 8
+} ShadingType;
+
class CPDF_ShadingPattern : public CPDF_Pattern {
public:
CPDF_ShadingPattern(CPDF_Document* pDoc,
@@ -688,6 +701,13 @@ class CPDF_ShadingPattern : public CPDF_Pattern {
~CPDF_ShadingPattern() override;
+ bool IsMeshShading() const {
+ return m_ShadingType == kFreeFormGouraudTriangleMeshShading ||
+ m_ShadingType == kLatticeFormGouraudTriangleMeshShading ||
+ m_ShadingType == kCoonsPatchMeshShading ||
+ m_ShadingType == kTensorProductPatchMeshShading;
+ }
+
CPDF_Object* m_pShadingObj;
FX_BOOL m_bShadingObj;
@@ -696,7 +716,7 @@ class CPDF_ShadingPattern : public CPDF_Pattern {
FX_BOOL Reload();
- int m_ShadingType;
+ ShadingType m_ShadingType;
CPDF_ColorSpace* m_pCS; // Still keep m_pCS as some CPDF_ColorSpace (name
// object) are not managed as counted objects. Refer
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
index b12a65a844..3057948959 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser.cpp
@@ -1092,12 +1092,13 @@ void CPDF_StreamContentParser::Handle_SetColorPS_Stroke() {
}
FX_Free(values);
}
-CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream,
- int type,
- const CFX_AffineMatrix* pMatrix,
- CPDF_Function** pFuncs,
- int nFuncs,
- CPDF_ColorSpace* pCS);
+CFX_FloatRect GetShadingBBox(CPDF_Stream* pStream,
+ ShadingType type,
+ const CFX_AffineMatrix* pMatrix,
+ CPDF_Function** pFuncs,
+ int nFuncs,
+ CPDF_ColorSpace* pCS);
+
void CPDF_StreamContentParser::Handle_ShadeFill() {
if (m_Options.m_bTextOnly) {
return;
@@ -1127,11 +1128,11 @@ void CPDF_StreamContentParser::Handle_ShadeFill() {
} else {
bbox = m_BBox;
}
- if (pShading->m_ShadingType >= 4) {
- bbox.Intersect(_GetShadingBBox(ToStream(pShading->m_pShadingObj),
- pShading->m_ShadingType, &pObj->m_Matrix,
- pShading->m_pFunctions, pShading->m_nFuncs,
- pShading->m_pCS));
+ if (pShading->IsMeshShading()) {
+ bbox.Intersect(GetShadingBBox(ToStream(pShading->m_pShadingObj),
+ pShading->m_ShadingType, &pObj->m_Matrix,
+ pShading->m_pFunctions, pShading->m_nFuncs,
+ pShading->m_pCS));
}
pObj->m_Left = bbox.left;
pObj->m_Right = bbox.right;
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
index ded6c878ea..b669b3b5d2 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_pattern.cpp
@@ -7,6 +7,24 @@
#include "../../../include/fpdfapi/fpdf_page.h"
#include "pageint.h"
+namespace {
+
+const int kSingleCoordinatePair = 1;
+const int kTensorCoordinatePairs = 16;
+const int kCoonsCoordinatePairs = 12;
+
+const int kSingleColorPerPatch = 1;
+const int kQuadColorsPerPatch = 4;
+
+ShadingType ToShadingType(int type) {
+ return (type > static_cast<int>(kInvalidShading) &&
+ type < static_cast<int>(kMaxShading))
+ ? static_cast<ShadingType>(type)
+ : kInvalidShading;
+}
+
+} // namespace
+
CPDF_Pattern::CPDF_Pattern(const CFX_AffineMatrix* pParentMatrix)
: m_pPatternObj(NULL),
m_PatternType(PATTERN_TILING),
@@ -78,7 +96,7 @@ CPDF_ShadingPattern::CPDF_ShadingPattern(CPDF_Document* pDoc,
} else {
m_pShadingObj = pPatternObj;
}
- m_ShadingType = 0;
+ m_ShadingType = kInvalidShading;
m_pCS = NULL;
m_nFuncs = 0;
for (int i = 0; i < 4; i++) {
@@ -98,15 +116,16 @@ void CPDF_ShadingPattern::Clear() {
if (pCS && m_pDocument) {
m_pDocument->GetPageData()->ReleaseColorSpace(pCS->GetArray());
}
- m_ShadingType = 0;
+ m_ShadingType = kInvalidShading;
m_pCS = NULL;
m_pCountedCS = NULL;
m_nFuncs = 0;
}
+
FX_BOOL CPDF_ShadingPattern::Load() {
- if (m_ShadingType != 0) {
+ if (m_ShadingType != kInvalidShading)
return TRUE;
- }
+
CPDF_Dictionary* pShadingDict =
m_pShadingObj ? m_pShadingObj->GetDict() : NULL;
if (pShadingDict == NULL) {
@@ -139,10 +158,12 @@ FX_BOOL CPDF_ShadingPattern::Load() {
if (m_pCS) {
m_pCountedCS = pDocPageData->FindColorSpacePtr(m_pCS->GetArray());
}
- m_ShadingType = pShadingDict->GetInteger(FX_BSTRC("ShadingType"));
+
+ m_ShadingType =
+ ToShadingType(pShadingDict->GetInteger(FX_BSTRC("ShadingType")));
// We expect to have a stream if our shading type is a mesh.
- if (m_ShadingType >= 4 && !ToStream(m_pShadingObj))
+ if (IsMeshShading() && !ToStream(m_pShadingObj))
return FALSE;
return TRUE;
@@ -253,12 +274,13 @@ FX_BOOL CPDF_MeshStream::GetVertexRow(CPDF_MeshVertex* vertex,
}
return TRUE;
}
-CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream,
- int type,
- const CFX_AffineMatrix* pMatrix,
- CPDF_Function** pFuncs,
- int nFuncs,
- CPDF_ColorSpace* pCS) {
+
+CFX_FloatRect GetShadingBBox(CPDF_Stream* pStream,
+ ShadingType type,
+ const CFX_AffineMatrix* pMatrix,
+ CPDF_Function** pFuncs,
+ int nFuncs,
+ CPDF_ColorSpace* pCS) {
if (!pStream || !pStream->IsStream() || !pFuncs || !pCS)
return CFX_FloatRect(0, 0, 0, 0);
@@ -268,19 +290,29 @@ CFX_FloatRect _GetShadingBBox(CPDF_Stream* pStream,
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;
+ FX_BOOL bGouraud = type == kFreeFormGouraudTriangleMeshShading ||
+ type == kLatticeFormGouraudTriangleMeshShading;
+
+ int point_count = kSingleCoordinatePair;
+ if (type == kTensorProductPatchMeshShading)
+ point_count = kTensorCoordinatePairs;
+ else if (type == kCoonsPatchMeshShading)
+ point_count = kCoonsCoordinatePairs;
+
+ int color_count = kSingleColorPerPatch;
+ if (type == kCoonsPatchMeshShading || type == kTensorProductPatchMeshShading)
+ color_count = kQuadColorsPerPatch;
+
while (!stream.m_BitStream.IsEOF()) {
FX_DWORD flag = 0;
- if (type != 5) {
+ if (type != kLatticeFormGouraudTriangleMeshShading)
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);
diff --git a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
index 4ed6c07675..467ffc900c 100644
--- a/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
+++ b/core/src/fpdfapi/fpdf_render/fpdf_render_pattern.cpp
@@ -868,33 +868,37 @@ void CPDF_RenderStatus::DrawShading(CPDF_ShadingPattern* pPattern,
pBitmap->Clear(background);
int fill_mode = m_Options.m_Flags;
switch (pPattern->m_ShadingType) {
- case 1:
+ case kInvalidShading:
+ case kMaxShading:
+ return;
+ case kFunctionBasedShading:
DrawFuncShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs, pColorSpace,
alpha);
break;
- case 2:
+ case kAxialShading:
DrawAxialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs,
pColorSpace, alpha);
break;
- case 3:
+ case kRadialShading:
DrawRadialShading(pBitmap, &FinalMatrix, pDict, pFuncs, nFuncs,
pColorSpace, alpha);
break;
- case 4: {
+ case kFreeFormGouraudTriangleMeshShading: {
DrawFreeGouraudShading(pBitmap, &FinalMatrix,
ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
pColorSpace, alpha);
} break;
- case 5: {
+ case kLatticeFormGouraudTriangleMeshShading: {
DrawLatticeGouraudShading(pBitmap, &FinalMatrix,
ToStream(pPattern->m_pShadingObj), pFuncs,
nFuncs, pColorSpace, alpha);
} break;
- case 6:
- case 7: {
- DrawCoonPatchMeshes(pPattern->m_ShadingType - 6, pBitmap, &FinalMatrix,
- ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
- pColorSpace, fill_mode, alpha);
+ case kCoonsPatchMeshShading:
+ case kTensorProductPatchMeshShading: {
+ DrawCoonPatchMeshes(
+ pPattern->m_ShadingType == kTensorProductPatchMeshShading, pBitmap,
+ &FinalMatrix, ToStream(pPattern->m_pShadingObj), pFuncs, nFuncs,
+ pColorSpace, fill_mode, alpha);
} break;
}
if (bAlphaMode) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 12:26:40 +0000