1 // Copyright 2016 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 "core/fpdfapi/fpdf_page/include/cpdf_shadingobject.h"
8 
9 #include "core/fpdfapi/fpdf_page/cpdf_shadingpattern.h"
10 #include "core/fpdfapi/fpdf_page/pageint.h"
11 #include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
12 
CPDF_ShadingObject()13 CPDF_ShadingObject::CPDF_ShadingObject() : m_pShading(nullptr) {}
14 
~CPDF_ShadingObject()15 CPDF_ShadingObject::~CPDF_ShadingObject() {}
16 
Clone() const17 CPDF_ShadingObject* CPDF_ShadingObject::Clone() const {
18   CPDF_ShadingObject* obj = new CPDF_ShadingObject;
19   obj->CopyData(this);
20 
21   obj->m_pShading = m_pShading;
22   if (obj->m_pShading && obj->m_pShading->document()) {
23     CPDF_DocPageData* pDocPageData = obj->m_pShading->document()->GetPageData();
24     CPDF_Pattern* pattern = pDocPageData->GetPattern(
25         obj->m_pShading->GetShadingObject(), m_pShading->IsShadingObject(),
26         obj->m_pShading->parent_matrix());
27     obj->m_pShading = pattern ? pattern->AsShadingPattern() : nullptr;
28   }
29   obj->m_Matrix = m_Matrix;
30   return obj;
31 }
32 
GetType() const33 CPDF_PageObject::Type CPDF_ShadingObject::GetType() const {
34   return SHADING;
35 }
36 
Transform(const CFX_Matrix & matrix)37 void CPDF_ShadingObject::Transform(const CFX_Matrix& matrix) {
38   if (!m_ClipPath.IsNull()) {
39     m_ClipPath.GetModify();
40     m_ClipPath.Transform(matrix);
41   }
42   m_Matrix.Concat(matrix);
43   if (!m_ClipPath.IsNull()) {
44     CalcBoundingBox();
45   } else {
46     matrix.TransformRect(m_Left, m_Right, m_Top, m_Bottom);
47   }
48 }
49 
IsShading() const50 bool CPDF_ShadingObject::IsShading() const {
51   return true;
52 }
53 
AsShading()54 CPDF_ShadingObject* CPDF_ShadingObject::AsShading() {
55   return this;
56 }
57 
AsShading() const58 const CPDF_ShadingObject* CPDF_ShadingObject::AsShading() const {
59   return this;
60 }
61 
CalcBoundingBox()62 void CPDF_ShadingObject::CalcBoundingBox() {
63   if (m_ClipPath.IsNull()) {
64     return;
65   }
66   CFX_FloatRect rect = m_ClipPath.GetClipBox();
67   m_Left = rect.left;
68   m_Bottom = rect.bottom;
69   m_Right = rect.right;
70   m_Top = rect.top;
71 }
72