1 // Copyright 2017 The PDFium Authors
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_linear.h"
8
9 #include "fxjs/xfa/cjx_node.h"
10 #include "xfa/fgas/graphics/cfgas_gegraphics.h"
11 #include "xfa/fgas/graphics/cfgas_geshading.h"
12 #include "xfa/fxfa/parser/cxfa_color.h"
13 #include "xfa/fxfa/parser/cxfa_document.h"
14
15 namespace {
16
17 const CXFA_Node::PropertyData kLinearPropertyData[] = {
18 {XFA_Element::Color, 1, {}},
19 {XFA_Element::Extras, 1, {}},
20 };
21
22 const CXFA_Node::AttributeData kLinearAttributeData[] = {
23 {XFA_Attribute::Id, XFA_AttributeType::CData, nullptr},
24 {XFA_Attribute::Use, XFA_AttributeType::CData, nullptr},
25 {XFA_Attribute::Type, XFA_AttributeType::Enum,
26 (void*)XFA_AttributeValue::ToRight},
27 {XFA_Attribute::Usehref, XFA_AttributeType::CData, nullptr},
28 };
29
30 } // namespace
31
CXFA_Linear(CXFA_Document * doc,XFA_PacketType packet)32 CXFA_Linear::CXFA_Linear(CXFA_Document* doc, XFA_PacketType packet)
33 : CXFA_Node(doc,
34 packet,
35 {XFA_XDPPACKET::kTemplate, XFA_XDPPACKET::kForm},
36 XFA_ObjectType::Node,
37 XFA_Element::Linear,
38 kLinearPropertyData,
39 kLinearAttributeData,
40 cppgc::MakeGarbageCollected<CJX_Node>(
41 doc->GetHeap()->GetAllocationHandle(),
42 this)) {}
43
44 CXFA_Linear::~CXFA_Linear() = default;
45
GetType()46 XFA_AttributeValue CXFA_Linear::GetType() {
47 return JSObject()
48 ->TryEnum(XFA_Attribute::Type, true)
49 .value_or(XFA_AttributeValue::ToRight);
50 }
51
GetColorIfExists()52 CXFA_Color* CXFA_Linear::GetColorIfExists() {
53 return GetChild<CXFA_Color>(0, XFA_Element::Color, false);
54 }
55
Draw(CFGAS_GEGraphics * pGS,const CFGAS_GEPath & fillPath,FX_ARGB crStart,const CFX_RectF & rtFill,const CFX_Matrix & matrix)56 void CXFA_Linear::Draw(CFGAS_GEGraphics* pGS,
57 const CFGAS_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
64 CFX_PointF ptStart;
65 CFX_PointF ptEnd;
66 switch (GetType()) {
67 case XFA_AttributeValue::ToRight:
68 ptStart = CFX_PointF(rtFill.left, rtFill.top);
69 ptEnd = CFX_PointF(rtFill.right(), rtFill.top);
70 break;
71 case XFA_AttributeValue::ToBottom:
72 ptStart = CFX_PointF(rtFill.left, rtFill.top);
73 ptEnd = CFX_PointF(rtFill.left, rtFill.bottom());
74 break;
75 case XFA_AttributeValue::ToLeft:
76 ptStart = CFX_PointF(rtFill.right(), rtFill.top);
77 ptEnd = CFX_PointF(rtFill.left, rtFill.top);
78 break;
79 case XFA_AttributeValue::ToTop:
80 ptStart = CFX_PointF(rtFill.left, rtFill.bottom());
81 ptEnd = CFX_PointF(rtFill.left, rtFill.top);
82 break;
83 default:
84 break;
85 }
86
87 CFGAS_GEShading shading(ptStart, ptEnd, false, false, crStart, crEnd);
88 CFGAS_GEGraphics::StateRestorer restorer(pGS);
89 pGS->SetFillColor(CFGAS_GEColor(&shading));
90 pGS->FillPath(fillPath, CFX_FillRenderOptions::FillType::kWinding, matrix);
91 }
92