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-rw-r--r--core/fpdfapi/page/cpdf_meshstream.cpp69
-rw-r--r--core/fpdfapi/page/cpdf_meshstream.h25
-rw-r--r--core/fpdfapi/page/cpdf_streamcontentparser.cpp10
-rw-r--r--core/fpdfapi/render/cpdf_renderstatus.cpp104
4 files changed, 115 insertions, 93 deletions
diff --git a/core/fpdfapi/page/cpdf_meshstream.cpp b/core/fpdfapi/page/cpdf_meshstream.cpp
index b852901794..75069cab7f 100644
--- a/core/fpdfapi/page/cpdf_meshstream.cpp
+++ b/core/fpdfapi/page/cpdf_meshstream.cpp
@@ -83,6 +83,12 @@ bool IsValidBitsPerFlag(uint32_t x) {
} // namespace
+CPDF_MeshVertex::CPDF_MeshVertex() = default;
+
+CPDF_MeshVertex::CPDF_MeshVertex(const CPDF_MeshVertex&) = default;
+
+CPDF_MeshVertex::~CPDF_MeshVertex() = default;
+
CPDF_MeshStream::CPDF_MeshStream(
ShadingType type,
const std::vector<std::unique_ptr<CPDF_Function>>& funcs,
@@ -148,37 +154,47 @@ bool CPDF_MeshStream::Load() {
return true;
}
-uint32_t CPDF_MeshStream::GetFlag() {
+uint32_t CPDF_MeshStream::ReadFlag() {
ASSERT(ShouldCheckBitsPerFlag(m_type));
return m_BitStream.GetBits(m_nFlagBits) & 0x03;
}
-void CPDF_MeshStream::GetCoords(FX_FLOAT& x, FX_FLOAT& y) {
+CFX_PointF CPDF_MeshStream::ReadCoords() {
ASSERT(ShouldCheckBPC(m_type));
+
+ CFX_PointF pos;
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);
+ pos.x = m_xmin +
+ m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) /
+ static_cast<double>(m_CoordMax);
+ pos.y = m_ymin +
+ m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) /
+ static_cast<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;
+ pos.x = m_xmin +
+ m_BitStream.GetBits(m_nCoordBits) * (m_xmax - m_xmin) / m_CoordMax;
+ pos.y = m_ymin +
+ m_BitStream.GetBits(m_nCoordBits) * (m_ymax - m_ymin) / m_CoordMax;
}
+ return pos;
}
-void CPDF_MeshStream::GetColor(FX_FLOAT& r, FX_FLOAT& g, FX_FLOAT& b) {
+std::tuple<FX_FLOAT, FX_FLOAT, FX_FLOAT> CPDF_MeshStream::ReadColor() {
ASSERT(ShouldCheckBPC(m_type));
+
FX_FLOAT color_value[kMaxComponents];
for (uint32_t i = 0; i < m_nComponents; ++i) {
color_value[i] = m_ColorMin[i] +
m_BitStream.GetBits(m_nComponentBits) *
(m_ColorMax[i] - m_ColorMin[i]) / m_ComponentMax;
}
+
+ FX_FLOAT r;
+ FX_FLOAT g;
+ FX_FLOAT b;
if (m_funcs.empty()) {
m_pCS->GetRGB(color_value, r, g, b);
- return;
+ return std::tuple<FX_FLOAT, FX_FLOAT, FX_FLOAT>(r, g, b);
}
FX_FLOAT result[kMaxComponents];
@@ -188,29 +204,32 @@ void CPDF_MeshStream::GetColor(FX_FLOAT& r, FX_FLOAT& g, FX_FLOAT& b) {
if (func && func->CountOutputs() <= kMaxComponents)
func->Call(color_value, 1, result, nResults);
}
+
m_pCS->GetRGB(result, r, g, b);
+ return std::tuple<FX_FLOAT, FX_FLOAT, FX_FLOAT>(r, g, b);
}
-uint32_t CPDF_MeshStream::GetVertex(CPDF_MeshVertex& vertex,
- CFX_Matrix* pObject2Bitmap) {
- uint32_t flag = GetFlag();
- GetCoords(vertex.x, vertex.y);
- pObject2Bitmap->TransformPoint(vertex.x, vertex.y);
- GetColor(vertex.r, vertex.g, vertex.b);
+CPDF_MeshVertex CPDF_MeshStream::ReadVertex(const CFX_Matrix& pObject2Bitmap,
+ uint32_t* flag) {
+ *flag = ReadFlag();
+
+ CPDF_MeshVertex vertex;
+ vertex.position = pObject2Bitmap.Transform(ReadCoords());
+ std::tie(vertex.r, vertex.g, vertex.b) = ReadColor();
m_BitStream.ByteAlign();
- return flag;
+
+ return vertex;
}
-bool CPDF_MeshStream::GetVertexRow(CPDF_MeshVertex* vertex,
- int count,
- CFX_Matrix* pObject2Bitmap) {
+bool CPDF_MeshStream::ReadVertexRow(const CFX_Matrix& pObject2Bitmap,
+ int count,
+ CPDF_MeshVertex* vertex) {
for (int i = 0; i < count; i++) {
if (m_BitStream.IsEOF())
return false;
- GetCoords(vertex[i].x, vertex[i].y);
- pObject2Bitmap->TransformPoint(vertex[i].x, vertex[i].y);
- GetColor(vertex[i].r, vertex[i].g, vertex[i].b);
+ vertex[i].position = pObject2Bitmap.Transform(ReadCoords());
+ std::tie(vertex[i].r, vertex[i].g, vertex[i].b) = ReadColor();
m_BitStream.ByteAlign();
}
return true;
diff --git a/core/fpdfapi/page/cpdf_meshstream.h b/core/fpdfapi/page/cpdf_meshstream.h
index 21a6c2fa8c..24f1d66cfd 100644
--- a/core/fpdfapi/page/cpdf_meshstream.h
+++ b/core/fpdfapi/page/cpdf_meshstream.h
@@ -8,6 +8,7 @@
#define CORE_FPDFAPI_PAGE_CPDF_MESHSTREAM_H_
#include <memory>
+#include <tuple>
#include <vector>
#include "core/fpdfapi/page/cpdf_shadingpattern.h"
@@ -15,9 +16,13 @@
#include "core/fxcrt/fx_basic.h"
#include "core/fxcrt/fx_system.h"
-struct CPDF_MeshVertex {
- FX_FLOAT x;
- FX_FLOAT y;
+class CPDF_MeshVertex {
+ public:
+ CPDF_MeshVertex();
+ CPDF_MeshVertex(const CPDF_MeshVertex&);
+ ~CPDF_MeshVertex();
+
+ CFX_PointF position;
FX_FLOAT r;
FX_FLOAT g;
FX_FLOAT b;
@@ -37,14 +42,14 @@ class CPDF_MeshStream {
bool Load();
- uint32_t GetFlag();
- void GetCoords(FX_FLOAT& x, FX_FLOAT& y);
- void GetColor(FX_FLOAT& r, FX_FLOAT& g, FX_FLOAT& b);
+ uint32_t ReadFlag();
+ CFX_PointF ReadCoords();
+ std::tuple<FX_FLOAT, FX_FLOAT, FX_FLOAT> ReadColor();
- uint32_t GetVertex(CPDF_MeshVertex& vertex, CFX_Matrix* pObject2Bitmap);
- bool GetVertexRow(CPDF_MeshVertex* vertex,
- int count,
- CFX_Matrix* pObject2Bitmap);
+ CPDF_MeshVertex ReadVertex(const CFX_Matrix& pObject2Bitmap, uint32_t* flag);
+ bool ReadVertexRow(const CFX_Matrix& pObject2Bitmap,
+ int count,
+ CPDF_MeshVertex* vertex);
CFX_BitStream* BitStream() { return &m_BitStream; }
uint32_t ComponentBits() const { return m_nComponentBits; }
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 21b13772c5..af5b88fead 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -99,7 +99,7 @@ CFX_FloatRect GetShadingBBox(CPDF_ShadingPattern* pShading,
while (!stream.BitStream()->IsEOF()) {
uint32_t flag = 0;
if (type != kLatticeFormGouraudTriangleMeshShading)
- flag = stream.GetFlag();
+ flag = stream.ReadFlag();
if (!bGouraud && flag) {
point_count -= 4;
@@ -107,13 +107,11 @@ CFX_FloatRect GetShadingBBox(CPDF_ShadingPattern* pShading,
}
for (int i = 0; i < point_count; i++) {
- FX_FLOAT x;
- FX_FLOAT y;
- stream.GetCoords(x, y);
+ CFX_PointF origin = stream.ReadCoords();
if (bStarted) {
- rect.UpdateRect(x, y);
+ rect.UpdateRect(origin.x, origin.y);
} else {
- rect.InitRect(x, y);
+ rect.InitRect(origin.x, origin.y);
bStarted = true;
}
}
diff --git a/core/fpdfapi/render/cpdf_renderstatus.cpp b/core/fpdfapi/render/cpdf_renderstatus.cpp
index b71fd31392..2d3c23994e 100644
--- a/core/fpdfapi/render/cpdf_renderstatus.cpp
+++ b/core/fpdfapi/render/cpdf_renderstatus.cpp
@@ -369,67 +369,65 @@ void DrawFuncShading(CFX_DIBitmap* pBitmap,
}
bool GetScanlineIntersect(int y,
- FX_FLOAT x1,
- FX_FLOAT y1,
- FX_FLOAT x2,
- FX_FLOAT y2,
+ const CFX_PointF& first,
+ const CFX_PointF& second,
FX_FLOAT* x) {
- if (y1 == y2)
+ if (first.y == second.y)
return false;
- if (y1 < y2) {
- if (y < y1 || y > y2)
- return false;
- } else {
- if (y < y2 || y > y1)
+ if (first.y < second.y) {
+ if (y < first.y || y > second.y)
return false;
+ } else if (y < second.y || y > first.y) {
+ return false;
}
- *x = x1 + ((x2 - x1) * (y - y1) / (y2 - y1));
+ *x = first.x + ((second.x - first.x) * (y - first.y) / (second.y - first.y));
return true;
}
void DrawGouraud(CFX_DIBitmap* pBitmap,
int alpha,
CPDF_MeshVertex triangle[3]) {
- FX_FLOAT min_y = triangle[0].y, max_y = triangle[0].y;
+ FX_FLOAT min_y = triangle[0].position.y;
+ FX_FLOAT max_y = triangle[0].position.y;
for (int i = 1; i < 3; i++) {
- if (min_y > triangle[i].y) {
- min_y = triangle[i].y;
- }
- if (max_y < triangle[i].y) {
- max_y = triangle[i].y;
- }
+ min_y = std::min(min_y, triangle[i].position.y);
+ max_y = std::max(max_y, triangle[i].position.y);
}
- if (min_y == max_y) {
+ if (min_y == max_y)
return;
- }
- int min_yi = (int)FXSYS_floor(min_y), max_yi = (int)FXSYS_ceil(max_y);
- if (min_yi < 0) {
- min_yi = 0;
- }
- if (max_yi >= pBitmap->GetHeight()) {
+
+ int min_yi = std::max(static_cast<int>(FXSYS_floor(min_y)), 0);
+ int max_yi = static_cast<int>(FXSYS_ceil(max_y));
+
+ if (max_yi >= pBitmap->GetHeight())
max_yi = pBitmap->GetHeight() - 1;
- }
+
for (int y = min_yi; y <= max_yi; y++) {
int nIntersects = 0;
- FX_FLOAT inter_x[3], r[3], g[3], b[3];
+ FX_FLOAT inter_x[3];
+ FX_FLOAT r[3];
+ FX_FLOAT g[3];
+ FX_FLOAT b[3];
for (int i = 0; i < 3; i++) {
CPDF_MeshVertex& vertex1 = triangle[i];
CPDF_MeshVertex& vertex2 = triangle[(i + 1) % 3];
- bool bIntersect = GetScanlineIntersect(y, vertex1.x, vertex1.y, vertex2.x,
- vertex2.y, &inter_x[nIntersects]);
+ CFX_PointF& position1 = vertex1.position;
+ CFX_PointF& position2 = vertex2.position;
+ bool bIntersect =
+ GetScanlineIntersect(y, position1, position2, &inter_x[nIntersects]);
if (!bIntersect)
continue;
- FX_FLOAT y_dist = (y - vertex1.y) / (vertex2.y - vertex1.y);
+ FX_FLOAT y_dist = (y - position1.y) / (position2.y - position1.y);
r[nIntersects] = vertex1.r + ((vertex2.r - vertex1.r) * y_dist);
g[nIntersects] = vertex1.g + ((vertex2.g - vertex1.g) * y_dist);
b[nIntersects] = vertex1.b + ((vertex2.b - vertex1.b) * y_dist);
nIntersects++;
}
- if (nIntersects != 2) {
+ if (nIntersects != 2)
continue;
- }
+
int min_x, max_x, start_index, end_index;
if (inter_x[0] < inter_x[1]) {
min_x = (int)FXSYS_floor(inter_x[0]);
@@ -442,13 +440,12 @@ void DrawGouraud(CFX_DIBitmap* pBitmap,
start_index = 1;
end_index = 0;
}
- int start_x = min_x, end_x = max_x;
- if (start_x < 0) {
- start_x = 0;
- }
- if (end_x > pBitmap->GetWidth()) {
+
+ int start_x = std::max(min_x, 0);
+ int end_x = max_x;
+ if (end_x > pBitmap->GetWidth())
end_x = pBitmap->GetWidth();
- }
+
uint8_t* dib_buf =
pBitmap->GetBuffer() + y * pBitmap->GetPitch() + start_x * 4;
FX_FLOAT r_unit = (r[end_index] - r[start_index]) / (max_x - min_x);
@@ -487,17 +484,18 @@ void DrawFreeGouraudShading(
FXSYS_memset(triangle, 0, sizeof(triangle));
while (!stream.BitStream()->IsEOF()) {
- CPDF_MeshVertex vertex;
- uint32_t flag = stream.GetVertex(vertex, pObject2Bitmap);
+ uint32_t flag;
+ CPDF_MeshVertex vertex = stream.ReadVertex(*pObject2Bitmap, &flag);
if (flag == 0) {
triangle[0] = vertex;
for (int j = 1; j < 3; j++) {
- stream.GetVertex(triangle[j], pObject2Bitmap);
+ uint32_t tflag;
+ triangle[j] = stream.ReadVertex(*pObject2Bitmap, &tflag);
}
} else {
- if (flag == 1) {
+ if (flag == 1)
triangle[0] = triangle[1];
- }
+
triangle[1] = triangle[2];
triangle[2] = vertex;
}
@@ -525,14 +523,14 @@ void DrawLatticeGouraudShading(
std::unique_ptr<CPDF_MeshVertex, FxFreeDeleter> vertex(
FX_Alloc2D(CPDF_MeshVertex, row_verts, 2));
- if (!stream.GetVertexRow(vertex.get(), row_verts, pObject2Bitmap))
+ if (!stream.ReadVertexRow(*pObject2Bitmap, row_verts, vertex.get()))
return;
int last_index = 0;
while (1) {
CPDF_MeshVertex* last_row = vertex.get() + last_index * row_verts;
CPDF_MeshVertex* this_row = vertex.get() + (1 - last_index) * row_verts;
- if (!stream.GetVertexRow(this_row, row_verts, pObject2Bitmap))
+ if (!stream.ReadVertexRow(*pObject2Bitmap, row_verts, this_row))
return;
CPDF_MeshVertex triangle[3];
@@ -827,7 +825,7 @@ void DrawCoonPatchMeshes(
CFX_PointF coords[16];
int point_count = type == kTensorProductPatchMeshShading ? 16 : 12;
while (!stream.BitStream()->IsEOF()) {
- uint32_t flag = stream.GetFlag();
+ uint32_t flag = stream.ReadFlag();
int iStartPoint = 0, iStartColor = 0, i = 0;
if (flag) {
iStartPoint = 4;
@@ -842,13 +840,15 @@ void DrawCoonPatchMeshes(
tempColors[1] = patch.patch_colors[(flag + 1) % 4];
FXSYS_memcpy(patch.patch_colors, tempColors, sizeof(Coon_Color) * 2);
}
- for (i = iStartPoint; i < point_count; i++) {
- stream.GetCoords(coords[i].x, coords[i].y);
- pObject2Bitmap->TransformPoint(coords[i].x, coords[i].y);
- }
+ for (i = iStartPoint; i < point_count; i++)
+ coords[i] = pObject2Bitmap->Transform(stream.ReadCoords());
+
for (i = iStartColor; i < 4; i++) {
- FX_FLOAT r = 0.0f, g = 0.0f, b = 0.0f;
- stream.GetColor(r, g, b);
+ FX_FLOAT r;
+ FX_FLOAT g;
+ FX_FLOAT b;
+ std::tie(r, g, b) = stream.ReadColor();
+
patch.patch_colors[i].comp[0] = (int32_t)(r * 255);
patch.patch_colors[i].comp[1] = (int32_t)(g * 255);
patch.patch_colors[i].comp[2] = (int32_t)(b * 255);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 04:12:16 +0000