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_linear.h"
8
9 #include "core/fxge/render_defines.h"
10 #include "fxjs/xfa/cjx_node.h"
11 #include "third_party/base/ptr_util.h"
12 #include "xfa/fxfa/parser/cxfa_color.h"
13 #include "xfa/fxgraphics/cxfa_geshading.h"
14
15 namespace {
16
17 const CXFA_Node::PropertyData kLinearPropertyData[] = {
18 {XFA_Element::Color, 1, 0},
19 {XFA_Element::Extras, 1, 0},
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_Template | XFA_XDPPACKET_Form),
36 XFA_ObjectType::Node,
37 XFA_Element::Linear,
38 kLinearPropertyData,
39 kLinearAttributeData,
40 pdfium::MakeUnique<CJX_Node>(this)) {}
41
42 CXFA_Linear::~CXFA_Linear() = default;
43
GetType()44 XFA_AttributeValue CXFA_Linear::GetType() {
45 return JSObject()
46 ->TryEnum(XFA_Attribute::Type, true)
47 .value_or(XFA_AttributeValue::ToRight);
48 }
49
GetColorIfExists()50 CXFA_Color* CXFA_Linear::GetColorIfExists() {
51 return GetChild<CXFA_Color>(0, XFA_Element::Color, false);
52 }
53
Draw(CXFA_Graphics * pGS,CXFA_GEPath * fillPath,FX_ARGB crStart,const CFX_RectF & rtFill,const CFX_Matrix & matrix)54 void CXFA_Linear::Draw(CXFA_Graphics* pGS,
55 CXFA_GEPath* fillPath,
56 FX_ARGB crStart,
57 const CFX_RectF& rtFill,
58 const CFX_Matrix& matrix) {
59 CXFA_Color* pColor = GetColorIfExists();
60 FX_ARGB crEnd = pColor ? pColor->GetValue() : CXFA_Color::kBlackColor;
61
62 CFX_PointF ptStart;
63 CFX_PointF ptEnd;
64 switch (GetType()) {
65 case XFA_AttributeValue::ToRight:
66 ptStart = CFX_PointF(rtFill.left, rtFill.top);
67 ptEnd = CFX_PointF(rtFill.right(), rtFill.top);
68 break;
69 case XFA_AttributeValue::ToBottom:
70 ptStart = CFX_PointF(rtFill.left, rtFill.top);
71 ptEnd = CFX_PointF(rtFill.left, rtFill.bottom());
72 break;
73 case XFA_AttributeValue::ToLeft:
74 ptStart = CFX_PointF(rtFill.right(), rtFill.top);
75 ptEnd = CFX_PointF(rtFill.left, rtFill.top);
76 break;
77 case XFA_AttributeValue::ToTop:
78 ptStart = CFX_PointF(rtFill.left, rtFill.bottom());
79 ptEnd = CFX_PointF(rtFill.left, rtFill.top);
80 break;
81 default:
82 break;
83 }
84
85 CXFA_GEShading shading(ptStart, ptEnd, false, false, crStart, crEnd);
86
87 pGS->SaveGraphState();
88 pGS->SetFillColor(CXFA_GEColor(&shading));
89 pGS->FillPath(fillPath, FXFILL_WINDING, &matrix);
90 pGS->RestoreGraphState();
91 }
92