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// Copyright 2017 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 "xfa/fxfa/parser/cxfa_rectangle.h"
#include <cmath>
#include <utility>
#include "fxjs/xfa/cjx_node.h"
#include "third_party/base/check.h"
#include "third_party/base/notreached.h"
#include "xfa/fxfa/parser/cxfa_corner.h"
#include "xfa/fxfa/parser/cxfa_document.h"
#include "xfa/fxfa/parser/cxfa_stroke.h"
namespace {
const CXFA_Node::PropertyData kRectanglePropertyData[] = {
{XFA_Element::Edge, 4, 0},
{XFA_Element::Corner, 4, 0},
{XFA_Element::Fill, 1, 0},
};
const CXFA_Node::AttributeData kRectangleAttributeData[] = {
{XFA_Attribute::Id, XFA_AttributeType::CData, nullptr},
{XFA_Attribute::Use, XFA_AttributeType::CData, nullptr},
{XFA_Attribute::Usehref, XFA_AttributeType::CData, nullptr},
{XFA_Attribute::Hand, XFA_AttributeType::Enum,
(void*)XFA_AttributeValue::Even},
};
} // namespace
CXFA_Rectangle::CXFA_Rectangle(CXFA_Document* doc, XFA_PacketType packet)
: CXFA_Box(doc,
packet,
(XFA_XDPPACKET_Template | XFA_XDPPACKET_Form),
XFA_ObjectType::Node,
XFA_Element::Rectangle,
kRectanglePropertyData,
kRectangleAttributeData,
cppgc::MakeGarbageCollected<CJX_Node>(
doc->GetHeap()->GetAllocationHandle(),
this)) {}
CXFA_Rectangle::CXFA_Rectangle(CXFA_Document* pDoc,
XFA_PacketType ePacket,
uint32_t validPackets,
XFA_ObjectType oType,
XFA_Element eType,
pdfium::span<const PropertyData> properties,
pdfium::span<const AttributeData> attributes,
CJX_Object* js_node)
: CXFA_Box(pDoc,
ePacket,
validPackets,
oType,
eType,
properties,
attributes,
js_node) {}
CXFA_Rectangle::~CXFA_Rectangle() = default;
void CXFA_Rectangle::GetFillPath(const std::vector<CXFA_Stroke*>& strokes,
const CFX_RectF& rtWidget,
CFGAS_GEPath* fillPath) {
bool bSameStyles = true;
CXFA_Stroke* stroke1 = strokes[0];
for (int32_t i = 1; i < 8; i++) {
CXFA_Stroke* stroke2 = strokes[i];
if (!stroke1->SameStyles(stroke2, 0)) {
bSameStyles = false;
break;
}
stroke1 = stroke2;
}
if (bSameStyles) {
stroke1 = strokes[0];
for (int32_t i = 2; i < 8; i += 2) {
CXFA_Stroke* stroke2 = strokes[i];
if (!stroke1->SameStyles(stroke2, XFA_STROKE_SAMESTYLE_NoPresence |
XFA_STROKE_SAMESTYLE_Corner)) {
bSameStyles = false;
break;
}
stroke1 = stroke2;
}
if (bSameStyles) {
stroke1 = strokes[0];
if (stroke1->IsInverted())
bSameStyles = false;
if (stroke1->GetJoinType() != XFA_AttributeValue::Square)
bSameStyles = false;
}
}
if (bSameStyles) {
fillPath->AddRectangle(rtWidget.left, rtWidget.top, rtWidget.width,
rtWidget.height);
return;
}
for (int32_t i = 0; i < 8; i += 2) {
float sx = 0.0f;
float sy = 0.0f;
float vx = 1.0f;
float vy = 1.0f;
float nx = 1.0f;
float ny = 1.0f;
CFX_PointF cp1;
CFX_PointF cp2;
CXFA_Stroke* corner1 = strokes[i];
CXFA_Stroke* corner2 = strokes[(i + 2) % 8];
float fRadius1 = corner1->GetRadius();
float fRadius2 = corner2->GetRadius();
bool bInverted = corner1->IsInverted();
bool bRound = corner1->GetJoinType() == XFA_AttributeValue::Round;
if (bRound) {
sy = FX_PI / 2;
}
switch (i) {
case 0:
cp1 = rtWidget.TopLeft();
cp2 = rtWidget.TopRight();
vx = 1;
vy = 1;
nx = -1;
ny = 0;
if (bRound) {
sx = bInverted ? FX_PI / 2 : FX_PI;
} else {
sx = 1;
sy = 0;
}
break;
case 2:
cp1 = rtWidget.TopRight();
cp2 = rtWidget.BottomRight();
vx = -1;
vy = 1;
nx = 0;
ny = -1;
if (bRound) {
sx = bInverted ? FX_PI : FX_PI * 3 / 2;
} else {
sx = 0;
sy = 1;
}
break;
case 4:
cp1 = rtWidget.BottomRight();
cp2 = rtWidget.BottomLeft();
vx = -1;
vy = -1;
nx = 1;
ny = 0;
if (bRound) {
sx = bInverted ? FX_PI * 3 / 2 : 0;
} else {
sx = -1;
sy = 0;
}
break;
case 6:
cp1 = rtWidget.BottomLeft();
cp2 = rtWidget.TopLeft();
vx = 1;
vy = -1;
nx = 0;
ny = 1;
if (bRound) {
sx = bInverted ? 0 : FX_PI / 2;
} else {
sx = 0;
sy = -1;
}
break;
}
if (i == 0)
fillPath->MoveTo(CFX_PointF(cp1.x, cp1.y + fRadius1));
if (bRound) {
if (fRadius1 < 0)
sx -= FX_PI;
if (bInverted)
sy *= -1;
CFX_RectF rtRadius(cp1.x, cp1.y, fRadius1 * 2 * vx, fRadius1 * 2 * vy);
rtRadius.Normalize();
if (bInverted)
rtRadius.Offset(-fRadius1 * vx, -fRadius1 * vy);
fillPath->ArcTo(rtRadius.TopLeft(), rtRadius.Size(), sx, sy);
} else {
CFX_PointF cp;
if (bInverted) {
cp.x = cp1.x + fRadius1 * vx;
cp.y = cp1.y + fRadius1 * vy;
} else {
cp = cp1;
}
fillPath->LineTo(cp);
fillPath->LineTo(
CFX_PointF(cp1.x + fRadius1 * sx, cp1.y + fRadius1 * sy));
}
fillPath->LineTo(CFX_PointF(cp2.x + fRadius2 * nx, cp2.y + fRadius2 * ny));
}
}
void CXFA_Rectangle::Draw(const std::vector<CXFA_Stroke*>& strokes,
CFGAS_GEGraphics* pGS,
CFX_RectF rtWidget,
const CFX_Matrix& matrix) {
bool bVisible = false;
for (int32_t j = 0; j < 4; j++) {
if (strokes[j * 2 + 1]->IsVisible()) {
bVisible = true;
break;
}
}
if (!bVisible)
return;
for (int32_t i = 1; i < 8; i += 2) {
float fThickness = std::fmax(0.0, strokes[i]->GetThickness());
float fHalf = fThickness / 2;
XFA_AttributeValue iHand = GetHand();
switch (i) {
case 1:
if (iHand == XFA_AttributeValue::Left) {
rtWidget.top -= fHalf;
rtWidget.height += fHalf;
} else if (iHand == XFA_AttributeValue::Right) {
rtWidget.top += fHalf;
rtWidget.height -= fHalf;
}
break;
case 3:
if (iHand == XFA_AttributeValue::Left) {
rtWidget.width += fHalf;
} else if (iHand == XFA_AttributeValue::Right) {
rtWidget.width -= fHalf;
}
break;
case 5:
if (iHand == XFA_AttributeValue::Left) {
rtWidget.height += fHalf;
} else if (iHand == XFA_AttributeValue::Right) {
rtWidget.height -= fHalf;
}
break;
case 7:
if (iHand == XFA_AttributeValue::Left) {
rtWidget.left -= fHalf;
rtWidget.width += fHalf;
} else if (iHand == XFA_AttributeValue::Right) {
rtWidget.left += fHalf;
rtWidget.width -= fHalf;
}
break;
}
}
Stroke(strokes, pGS, rtWidget, matrix);
}
void CXFA_Rectangle::Stroke(const std::vector<CXFA_Stroke*>& strokes,
CFGAS_GEGraphics* pGS,
CFX_RectF rtWidget,
const CFX_Matrix& matrix) {
bool bVisible;
float fThickness;
XFA_AttributeValue i3DType;
std::tie(i3DType, bVisible, fThickness) = Get3DStyle();
if (i3DType != XFA_AttributeValue::Unknown) {
if (!bVisible || fThickness < 0.001f)
return;
switch (i3DType) {
case XFA_AttributeValue::Lowered:
StrokeLowered(pGS, rtWidget, fThickness, matrix);
break;
case XFA_AttributeValue::Raised:
StrokeRaised(pGS, rtWidget, fThickness, matrix);
break;
case XFA_AttributeValue::Etched:
StrokeEtched(pGS, rtWidget, fThickness, matrix);
break;
case XFA_AttributeValue::Embossed:
StrokeEmbossed(pGS, rtWidget, fThickness, matrix);
break;
default:
NOTREACHED();
break;
}
return;
}
bool bClose = false;
bool bSameStyles = true;
CXFA_Stroke* stroke1 = strokes[0];
for (int32_t i = 1; i < 8; i++) {
CXFA_Stroke* stroke2 = strokes[i];
if (!stroke1->SameStyles(stroke2, 0)) {
bSameStyles = false;
break;
}
stroke1 = stroke2;
}
if (bSameStyles) {
stroke1 = strokes[0];
bClose = true;
for (int32_t i = 2; i < 8; i += 2) {
CXFA_Stroke* stroke2 = strokes[i];
if (!stroke1->SameStyles(stroke2, XFA_STROKE_SAMESTYLE_NoPresence |
XFA_STROKE_SAMESTYLE_Corner)) {
bSameStyles = false;
break;
}
stroke1 = stroke2;
}
if (bSameStyles) {
stroke1 = strokes[0];
if (stroke1->IsInverted())
bSameStyles = false;
if (stroke1->GetJoinType() != XFA_AttributeValue::Square)
bSameStyles = false;
}
}
bool bStart = true;
CFGAS_GEPath path;
for (int32_t i = 0; i < 8; i++) {
CXFA_Stroke* stroke = strokes[i];
if ((i % 1) == 0 && stroke->GetRadius() < 0) {
bool bEmpty = path.IsEmpty();
if (!bEmpty) {
if (stroke)
stroke->Stroke(&path, pGS, matrix);
path.Clear();
}
bStart = true;
continue;
}
GetPath(strokes, rtWidget, path, i, bStart, !bSameStyles);
bStart = !stroke->SameStyles(strokes[(i + 1) % 8], 0);
if (bStart) {
if (stroke)
stroke->Stroke(&path, pGS, matrix);
path.Clear();
}
}
bool bEmpty = path.IsEmpty();
if (!bEmpty) {
if (bClose) {
path.Close();
}
if (strokes[7])
strokes[7]->Stroke(&path, pGS, matrix);
}
}
void CXFA_Rectangle::StrokeRect(CFGAS_GEGraphics* pGraphic,
const CFX_RectF& rt,
float fLineWidth,
const CFX_Matrix& matrix,
FX_ARGB argbTopLeft,
FX_ARGB argbBottomRight) {
float fBottom = rt.bottom();
float fRight = rt.right();
CFGAS_GEPath pathLT;
pathLT.MoveTo(CFX_PointF(rt.left, fBottom));
pathLT.LineTo(CFX_PointF(rt.left, rt.top));
pathLT.LineTo(CFX_PointF(fRight, rt.top));
pathLT.LineTo(CFX_PointF(fRight - fLineWidth, rt.top + fLineWidth));
pathLT.LineTo(CFX_PointF(rt.left + fLineWidth, rt.top + fLineWidth));
pathLT.LineTo(CFX_PointF(rt.left + fLineWidth, fBottom - fLineWidth));
pathLT.LineTo(CFX_PointF(rt.left, fBottom));
pGraphic->SetFillColor(CFGAS_GEColor(argbTopLeft));
pGraphic->FillPath(&pathLT, CFX_FillRenderOptions::FillType::kWinding,
&matrix);
CFGAS_GEPath pathRB;
pathRB.MoveTo(CFX_PointF(fRight, rt.top));
pathRB.LineTo(CFX_PointF(fRight, fBottom));
pathRB.LineTo(CFX_PointF(rt.left, fBottom));
pathRB.LineTo(CFX_PointF(rt.left + fLineWidth, fBottom - fLineWidth));
pathRB.LineTo(CFX_PointF(fRight - fLineWidth, fBottom - fLineWidth));
pathRB.LineTo(CFX_PointF(fRight - fLineWidth, rt.top + fLineWidth));
pathRB.LineTo(CFX_PointF(fRight, rt.top));
pGraphic->SetFillColor(CFGAS_GEColor(argbBottomRight));
pGraphic->FillPath(&pathRB, CFX_FillRenderOptions::FillType::kWinding,
&matrix);
}
void CXFA_Rectangle::StrokeLowered(CFGAS_GEGraphics* pGS,
CFX_RectF rt,
float fThickness,
const CFX_Matrix& matrix) {
float fHalfWidth = fThickness / 2.0f;
CFX_RectF rtInner(rt);
rtInner.Deflate(fHalfWidth, fHalfWidth);
CFGAS_GEPath path;
path.AddRectangle(rt.left, rt.top, rt.width, rt.height);
path.AddRectangle(rtInner.left, rtInner.top, rtInner.width, rtInner.height);
pGS->SetFillColor(CFGAS_GEColor(0xFF000000));
pGS->FillPath(&path, CFX_FillRenderOptions::FillType::kEvenOdd, &matrix);
StrokeRect(pGS, rtInner, fHalfWidth, matrix, 0xFF808080, 0xFFC0C0C0);
}
void CXFA_Rectangle::StrokeRaised(CFGAS_GEGraphics* pGS,
CFX_RectF rt,
float fThickness,
const CFX_Matrix& matrix) {
float fHalfWidth = fThickness / 2.0f;
CFX_RectF rtInner(rt);
rtInner.Deflate(fHalfWidth, fHalfWidth);
CFGAS_GEPath path;
path.AddRectangle(rt.left, rt.top, rt.width, rt.height);
path.AddRectangle(rtInner.left, rtInner.top, rtInner.width, rtInner.height);
pGS->SetFillColor(CFGAS_GEColor(0xFF000000));
pGS->FillPath(&path, CFX_FillRenderOptions::FillType::kEvenOdd, &matrix);
StrokeRect(pGS, rtInner, fHalfWidth, matrix, 0xFFFFFFFF, 0xFF808080);
}
void CXFA_Rectangle::StrokeEtched(CFGAS_GEGraphics* pGS,
CFX_RectF rt,
float fThickness,
const CFX_Matrix& matrix) {
float fHalfWidth = fThickness / 2.0f;
StrokeRect(pGS, rt, fThickness, matrix, 0xFF808080, 0xFFFFFFFF);
CFX_RectF rtInner(rt);
rtInner.Deflate(fHalfWidth, fHalfWidth);
StrokeRect(pGS, rtInner, fHalfWidth, matrix, 0xFFFFFFFF, 0xFF808080);
}
void CXFA_Rectangle::StrokeEmbossed(CFGAS_GEGraphics* pGS,
CFX_RectF rt,
float fThickness,
const CFX_Matrix& matrix) {
float fHalfWidth = fThickness / 2.0f;
StrokeRect(pGS, rt, fThickness, matrix, 0xFF808080, 0xFF000000);
CFX_RectF rtInner(rt);
rtInner.Deflate(fHalfWidth, fHalfWidth);
StrokeRect(pGS, rtInner, fHalfWidth, matrix, 0xFF000000, 0xFF808080);
}
void CXFA_Rectangle::GetPath(const std::vector<CXFA_Stroke*>& strokes,
CFX_RectF rtWidget,
CFGAS_GEPath& path,
int32_t nIndex,
bool bStart,
bool bCorner) {
DCHECK(nIndex >= 0);
DCHECK(nIndex < 8);
int32_t n = (nIndex & 1) ? nIndex - 1 : nIndex;
CXFA_Stroke* corner1 = strokes[n];
CXFA_Stroke* corner2 = strokes[(n + 2) % 8];
float fRadius1 = bCorner ? corner1->GetRadius() : 0.0f;
float fRadius2 = bCorner ? corner2->GetRadius() : 0.0f;
bool bInverted = corner1->IsInverted();
float offsetY = 0.0f;
float offsetX = 0.0f;
bool bRound = corner1->GetJoinType() == XFA_AttributeValue::Round;
float halfAfter = 0.0f;
float halfBefore = 0.0f;
CXFA_Stroke* stroke = strokes[nIndex];
if (stroke->IsCorner()) {
CXFA_Stroke* strokeBefore = strokes[(nIndex + 1 * 8 - 1) % 8];
CXFA_Stroke* strokeAfter = strokes[nIndex + 1];
if (stroke->IsInverted()) {
if (!stroke->SameStyles(strokeBefore, 0))
halfBefore = strokeBefore->GetThickness() / 2;
if (!stroke->SameStyles(strokeAfter, 0))
halfAfter = strokeAfter->GetThickness() / 2;
}
} else {
CXFA_Stroke* strokeBefore = strokes[(nIndex + 8 - 2) % 8];
CXFA_Stroke* strokeAfter = strokes[(nIndex + 2) % 8];
if (!bRound && !bInverted) {
halfBefore = strokeBefore->GetThickness() / 2;
halfAfter = strokeAfter->GetThickness() / 2;
}
}
float offsetEX = 0.0f;
float offsetEY = 0.0f;
float sx = 0.0f;
float sy = 0.0f;
float vx = 1.0f;
float vy = 1.0f;
float nx = 1.0f;
float ny = 1.0f;
CFX_PointF cpStart;
CFX_PointF cp1;
CFX_PointF cp2;
if (bRound)
sy = FX_PI / 2;
switch (nIndex) {
case 0:
case 1:
cp1 = rtWidget.TopLeft();
cp2 = rtWidget.TopRight();
if (nIndex == 0) {
cpStart.x = cp1.x - halfBefore;
cpStart.y = cp1.y + fRadius1;
offsetY = -halfAfter;
} else {
cpStart.x = cp1.x + fRadius1 - halfBefore;
cpStart.y = cp1.y;
offsetEX = halfAfter;
}
vx = 1;
vy = 1;
nx = -1;
ny = 0;
if (bRound) {
sx = bInverted ? FX_PI / 2 : FX_PI;
} else {
sx = 1;
sy = 0;
}
break;
case 2:
case 3:
cp1 = rtWidget.TopRight();
cp2 = rtWidget.BottomRight();
if (nIndex == 2) {
cpStart.x = cp1.x - fRadius1;
cpStart.y = cp1.y - halfBefore;
offsetX = halfAfter;
} else {
cpStart.x = cp1.x;
cpStart.y = cp1.y + fRadius1 - halfBefore;
offsetEY = halfAfter;
}
vx = -1;
vy = 1;
nx = 0;
ny = -1;
if (bRound) {
sx = bInverted ? FX_PI : FX_PI * 3 / 2;
} else {
sx = 0;
sy = 1;
}
break;
case 4:
case 5:
cp1 = rtWidget.BottomRight();
cp2 = rtWidget.BottomLeft();
if (nIndex == 4) {
cpStart.x = cp1.x + halfBefore;
cpStart.y = cp1.y - fRadius1;
offsetY = halfAfter;
} else {
cpStart.x = cp1.x - fRadius1 + halfBefore;
cpStart.y = cp1.y;
offsetEX = -halfAfter;
}
vx = -1;
vy = -1;
nx = 1;
ny = 0;
if (bRound) {
sx = bInverted ? FX_PI * 3 / 2 : 0;
} else {
sx = -1;
sy = 0;
}
break;
case 6:
case 7:
cp1 = rtWidget.BottomLeft();
cp2 = rtWidget.TopLeft();
if (nIndex == 6) {
cpStart.x = cp1.x + fRadius1;
cpStart.y = cp1.y + halfBefore;
offsetX = -halfAfter;
} else {
cpStart.x = cp1.x;
cpStart.y = cp1.y - fRadius1 + halfBefore;
offsetEY = -halfAfter;
}
vx = 1;
vy = -1;
nx = 0;
ny = 1;
if (bRound) {
sx = bInverted ? 0 : FX_PI / 2;
} else {
sx = 0;
sy = -1;
}
break;
}
if (bStart) {
path.MoveTo(cpStart);
}
if (nIndex & 1) {
path.LineTo(CFX_PointF(cp2.x + fRadius2 * nx + offsetEX,
cp2.y + fRadius2 * ny + offsetEY));
return;
}
if (bRound) {
if (fRadius1 < 0)
sx -= FX_PI;
if (bInverted)
sy *= -1;
CFX_RectF rtRadius(cp1.x + offsetX * 2, cp1.y + offsetY * 2,
fRadius1 * 2 * vx - offsetX * 2,
fRadius1 * 2 * vy - offsetY * 2);
rtRadius.Normalize();
if (bInverted)
rtRadius.Offset(-fRadius1 * vx, -fRadius1 * vy);
path.ArcTo(rtRadius.TopLeft(), rtRadius.Size(), sx, sy);
} else {
CFX_PointF cp;
if (bInverted) {
cp.x = cp1.x + fRadius1 * vx;
cp.y = cp1.y + fRadius1 * vy;
} else {
cp = cp1;
}
path.LineTo(cp);
path.LineTo(CFX_PointF(cp1.x + fRadius1 * sx + offsetX,
cp1.y + fRadius1 * sy + offsetY));
}
}