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      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_stipple.h"
      8 
      9 #include "fxjs/xfa/cjx_stipple.h"
     10 #include "third_party/base/ptr_util.h"
     11 #include "xfa/fxfa/parser/cxfa_color.h"
     12 
     13 namespace {
     14 
     15 const CXFA_Node::PropertyData kPropertyData[] = {{XFA_Element::Color, 1, 0},
     16                                                  {XFA_Element::Extras, 1, 0},
     17                                                  {XFA_Element::Unknown, 0, 0}};
     18 const CXFA_Node::AttributeData kAttributeData[] = {
     19     {XFA_Attribute::Id, XFA_AttributeType::CData, nullptr},
     20     {XFA_Attribute::Use, XFA_AttributeType::CData, nullptr},
     21     {XFA_Attribute::Rate, XFA_AttributeType::Integer, (void*)50},
     22     {XFA_Attribute::Usehref, XFA_AttributeType::CData, nullptr},
     23     {XFA_Attribute::Unknown, XFA_AttributeType::Integer, nullptr}};
     24 
     25 constexpr wchar_t kName[] = L"stipple";
     26 
     27 }  // namespace
     28 
     29 CXFA_Stipple::CXFA_Stipple(CXFA_Document* doc, XFA_PacketType packet)
     30     : CXFA_Node(doc,
     31                 packet,
     32                 (XFA_XDPPACKET_Template | XFA_XDPPACKET_Form),
     33                 XFA_ObjectType::Node,
     34                 XFA_Element::Stipple,
     35                 kPropertyData,
     36                 kAttributeData,
     37                 kName,
     38                 pdfium::MakeUnique<CJX_Stipple>(this)) {}
     39 
     40 CXFA_Stipple::~CXFA_Stipple() {}
     41 
     42 CXFA_Color* CXFA_Stipple::GetColorIfExists() {
     43   return GetChild<CXFA_Color>(0, XFA_Element::Color, false);
     44 }
     45 
     46 int32_t CXFA_Stipple::GetRate() {
     47   return JSObject()
     48       ->TryInteger(XFA_Attribute::Rate, true)
     49       .value_or(GetDefaultRate());
     50 }
     51 
     52 void CXFA_Stipple::Draw(CXFA_Graphics* pGS,
     53                         CXFA_GEPath* fillPath,
     54                         const CFX_RectF& rtFill,
     55                         const CFX_Matrix& matrix) {
     56   int32_t iRate = GetRate();
     57   if (iRate == 0)
     58     iRate = 100;
     59 
     60   CXFA_Color* pColor = GetColorIfExists();
     61   FX_ARGB crColor = pColor ? pColor->GetValue() : CXFA_Color::kBlackColor;
     62 
     63   int32_t a;
     64   FX_COLORREF rgb;
     65   std::tie(a, rgb) = ArgbToColorRef(crColor);
     66   FX_ARGB cr = ArgbEncode(iRate * a / 100, rgb);
     67 
     68   pGS->SaveGraphState();
     69   pGS->SetFillColor(CXFA_GEColor(cr));
     70   pGS->FillPath(fillPath, FXFILL_WINDING, &matrix);
     71   pGS->RestoreGraphState();
     72 }
     73