1 files changed, 95 insertions, 0 deletions
diff --git a/core/fpdfapi/fpdf_page/cpdf_generalstatedata.cpp b/core/fpdfapi/fpdf_page/cpdf_generalstatedata.cpp
new file mode 100644
index 0000000000..2e4b5e4dff
--- /dev/null
+++ b/core/fpdfapi/fpdf_page/cpdf_generalstatedata.cpp
@@ -0,0 +1,95 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "core/fpdfapi/fpdf_page/include/cpdf_generalstatedata.h"
+
+#include "core/fpdfapi/fpdf_parser/include/cpdf_document.h"
+#include "core/fpdfapi/fpdf_render/render_int.h"
+
+namespace {
+
+static int GetBlendTypeInternal(const CFX_ByteStringC& mode) {
+  switch (mode.GetID()) {
+    case FXBSTR_ID('N', 'o', 'r', 'm'):
+    case FXBSTR_ID('C', 'o', 'm', 'p'):
+      return FXDIB_BLEND_NORMAL;
+    case FXBSTR_ID('M', 'u', 'l', 't'):
+      return FXDIB_BLEND_MULTIPLY;
+    case FXBSTR_ID('S', 'c', 'r', 'e'):
+      return FXDIB_BLEND_SCREEN;
+    case FXBSTR_ID('O', 'v', 'e', 'r'):
+      return FXDIB_BLEND_OVERLAY;
+    case FXBSTR_ID('D', 'a', 'r', 'k'):
+      return FXDIB_BLEND_DARKEN;
+    case FXBSTR_ID('L', 'i', 'g', 'h'):
+      return FXDIB_BLEND_LIGHTEN;
+    case FXBSTR_ID('C', 'o', 'l', 'o'):
+      if (mode.GetLength() == 10)
+        return FXDIB_BLEND_COLORDODGE;
+
+      if (mode.GetLength() == 9)
+        return FXDIB_BLEND_COLORBURN;
+
+      return FXDIB_BLEND_COLOR;
+    case FXBSTR_ID('H', 'a', 'r', 'd'):
+      return FXDIB_BLEND_HARDLIGHT;
+    case FXBSTR_ID('S', 'o', 'f', 't'):
+      return FXDIB_BLEND_SOFTLIGHT;
+    case FXBSTR_ID('D', 'i', 'f', 'f'):
+      return FXDIB_BLEND_DIFFERENCE;
+    case FXBSTR_ID('E', 'x', 'c', 'l'):
+      return FXDIB_BLEND_EXCLUSION;
+    case FXBSTR_ID('H', 'u', 'e', 0):
+      return FXDIB_BLEND_HUE;
+    case FXBSTR_ID('S', 'a', 't', 'u'):
+      return FXDIB_BLEND_SATURATION;
+    case FXBSTR_ID('L', 'u', 'm', 'i'):
+      return FXDIB_BLEND_LUMINOSITY;
+  }
+  return FXDIB_BLEND_NORMAL;
+}
+
+}  // namespace
+
+CPDF_GeneralStateData::CPDF_GeneralStateData() {
+  FXSYS_memset(this, 0, sizeof(CPDF_GeneralStateData));
+  FXSYS_strcpy((FX_CHAR*)m_BlendMode, "Normal");
+  m_StrokeAlpha = 1.0f;
+  m_FillAlpha = 1.0f;
+  m_Flatness = 1.0f;
+  m_Matrix.SetIdentity();
+}
+
+CPDF_GeneralStateData::CPDF_GeneralStateData(const CPDF_GeneralStateData& src) {
+  FXSYS_memcpy(this, &src, sizeof(CPDF_GeneralStateData));
+  if (src.m_pTransferFunc && src.m_pTransferFunc->m_pPDFDoc) {
+    CPDF_DocRenderData* pDocCache =
+        src.m_pTransferFunc->m_pPDFDoc->GetRenderData();
+    if (!pDocCache)
+      return;
+
+    m_pTransferFunc = pDocCache->GetTransferFunc(m_pTR);
+  }
+}
+
+CPDF_GeneralStateData::~CPDF_GeneralStateData() {
+  if (m_pTransferFunc && m_pTransferFunc->m_pPDFDoc) {
+    CPDF_DocRenderData* pDocCache = m_pTransferFunc->m_pPDFDoc->GetRenderData();
+    if (!pDocCache)
+      return;
+
+    pDocCache->ReleaseTransferFunc(m_pTR);
+  }
+}
+
+void CPDF_GeneralStateData::SetBlendMode(const CFX_ByteStringC& blend_mode) {
+  if (blend_mode.GetLength() > 15) {
+    return;
+  }
+  FXSYS_memcpy(m_BlendMode, blend_mode.GetPtr(), blend_mode.GetLength());
+  m_BlendMode[blend_mode.GetLength()] = 0;
+  m_BlendType = GetBlendTypeInternal(blend_mode);
+}