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 "core/fxge/render_defines.h"
12 #include "fxjs/xfa/cjx_node.h"
13 #include "third_party/base/ptr_util.h"
14 #include "xfa/fxfa/parser/cxfa_color.h"
15 #include "xfa/fxgraphics/cxfa_geshading.h"
16
17 namespace {
18
19 const CXFA_Node::PropertyData kRadialPropertyData[] = {
20 {XFA_Element::Color, 1, 0},
21 {XFA_Element::Extras, 1, 0},
22 };
23
24 const CXFA_Node::AttributeData kRadialAttributeData[] = {
25 {XFA_Attribute::Id, XFA_AttributeType::CData, nullptr},
26 {XFA_Attribute::Use, XFA_AttributeType::CData, nullptr},
27 {XFA_Attribute::Type, XFA_AttributeType::Enum,
28 (void*)XFA_AttributeValue::ToEdge},
29 {XFA_Attribute::Usehref, XFA_AttributeType::CData, nullptr},
30 };
31
32 } // namespace
33
CXFA_Radial(CXFA_Document * doc,XFA_PacketType packet)34 CXFA_Radial::CXFA_Radial(CXFA_Document* doc, XFA_PacketType packet)
35 : CXFA_Node(doc,
36 packet,
37 (XFA_XDPPACKET_Template | XFA_XDPPACKET_Form),
38 XFA_ObjectType::Node,
39 XFA_Element::Radial,
40 kRadialPropertyData,
41 kRadialAttributeData,
42 pdfium::MakeUnique<CJX_Node>(this)) {}
43
44 CXFA_Radial::~CXFA_Radial() = default;
45
IsToEdge()46 bool CXFA_Radial::IsToEdge() {
47 auto value = JSObject()->TryEnum(XFA_Attribute::Type, true);
48 return !value.has_value() || value.value() == XFA_AttributeValue::ToEdge;
49 }
50
GetColorIfExists()51 CXFA_Color* CXFA_Radial::GetColorIfExists() {
52 return GetChild<CXFA_Color>(0, XFA_Element::Color, false);
53 }
54
Draw(CXFA_Graphics * pGS,CXFA_GEPath * fillPath,FX_ARGB crStart,const CFX_RectF & rtFill,const CFX_Matrix & matrix)55 void CXFA_Radial::Draw(CXFA_Graphics* pGS,
56 CXFA_GEPath* fillPath,
57 FX_ARGB crStart,
58 const CFX_RectF& rtFill,
59 const CFX_Matrix& matrix) {
60 CXFA_Color* pColor = GetColorIfExists();
61 FX_ARGB crEnd = pColor ? pColor->GetValue() : CXFA_Color::kBlackColor;
62 if (!IsToEdge())
63 std::swap(crStart, crEnd);
64
65 float endRadius = sqrt(rtFill.Width() * rtFill.Width() +
66 rtFill.Height() * rtFill.Height()) /
67 2;
68 CXFA_GEShading shading(rtFill.Center(), rtFill.Center(), 0, endRadius, true,
69 true, crStart, crEnd);
70
71 pGS->SaveGraphState();
72 pGS->SetFillColor(CXFA_GEColor(&shading));
73 pGS->FillPath(fillPath, FXFILL_WINDING, &matrix);
74 pGS->RestoreGraphState();
75 }
76