1 // Copyright 2017 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7 #include "xfa/fxfa/parser/cxfa_radial.h"
8
9 #include <utility>
10
11 #include "fxjs/xfa/cjx_radial.h"
12 #include "third_party/base/ptr_util.h"
13 #include "xfa/fxfa/parser/cxfa_color.h"
14 #include "xfa/fxgraphics/cxfa_geshading.h"
15
16 namespace {
17
18 const CXFA_Node::PropertyData kPropertyData[] = {{XFA_Element::Color, 1, 0},
19 {XFA_Element::Extras, 1, 0},
20 {XFA_Element::Unknown, 0, 0}};
21 const CXFA_Node::AttributeData kAttributeData[] = {
22 {XFA_Attribute::Id, XFA_AttributeType::CData, nullptr},
23 {XFA_Attribute::Use, XFA_AttributeType::CData, nullptr},
24 {XFA_Attribute::Type, XFA_AttributeType::Enum,
25 (void*)XFA_AttributeEnum::ToEdge},
26 {XFA_Attribute::Usehref, XFA_AttributeType::CData, nullptr},
27 {XFA_Attribute::Unknown, XFA_AttributeType::Integer, nullptr}};
28
29 constexpr wchar_t kName[] = L"radial";
30
31 } // namespace
32
CXFA_Radial(CXFA_Document * doc,XFA_PacketType packet)33 CXFA_Radial::CXFA_Radial(CXFA_Document* doc, XFA_PacketType packet)
34 : CXFA_Node(doc,
35 packet,
36 (XFA_XDPPACKET_Template | XFA_XDPPACKET_Form),
37 XFA_ObjectType::Node,
38 XFA_Element::Radial,
39 kPropertyData,
40 kAttributeData,
41 kName,
42 pdfium::MakeUnique<CJX_Radial>(this)) {}
43
~CXFA_Radial()44 CXFA_Radial::~CXFA_Radial() {}
45
IsToEdge()46 bool CXFA_Radial::IsToEdge() {
47 return JSObject()
48 ->TryEnum(XFA_Attribute::Type, true)
49 .value_or(XFA_AttributeEnum::ToEdge) == XFA_AttributeEnum::ToEdge;
50 }
51
GetColorIfExists()52 CXFA_Color* CXFA_Radial::GetColorIfExists() {
53 return GetChild<CXFA_Color>(0, XFA_Element::Color, false);
54 }
55
Draw(CXFA_Graphics * pGS,CXFA_GEPath * fillPath,FX_ARGB crStart,const CFX_RectF & rtFill,const CFX_Matrix & matrix)56 void CXFA_Radial::Draw(CXFA_Graphics* pGS,
57 CXFA_GEPath* fillPath,
58 FX_ARGB crStart,
59 const CFX_RectF& rtFill,
60 const CFX_Matrix& matrix) {
61 CXFA_Color* pColor = GetColorIfExists();
62 FX_ARGB crEnd = pColor ? pColor->GetValue() : CXFA_Color::kBlackColor;
63 if (!IsToEdge())
64 std::swap(crStart, crEnd);
65
66 float endRadius = sqrt(rtFill.Width() * rtFill.Width() +
67 rtFill.Height() * rtFill.Height()) /
68 2;
69 CXFA_GEShading shading(rtFill.Center(), rtFill.Center(), 0, endRadius, true,
70 true, crStart, crEnd);
71
72 pGS->SaveGraphState();
73 pGS->SetFillColor(CXFA_GEColor(&shading));
74 pGS->FillPath(fillPath, FXFILL_WINDING, &matrix);
75 pGS->RestoreGraphState();
76 }
77