1 files changed, 62 insertions, 0 deletions
diff --git a/core/fpdfapi/render/cpdf_renderoptions.cpp b/core/fpdfapi/render/cpdf_renderoptions.cpp
new file mode 100644
index 0000000000..ea11d7f5ee
--- /dev/null
+++ b/core/fpdfapi/render/cpdf_renderoptions.cpp
@@ -0,0 +1,62 @@
+// 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/render/cpdf_renderoptions.h"
+
+CPDF_RenderOptions::CPDF_RenderOptions()
+    : m_ColorMode(RENDER_COLOR_NORMAL),
+      m_Flags(RENDER_CLEARTYPE),
+      m_Interpolation(0),
+      m_AddFlags(0),
+      m_pOCContext(nullptr),
+      m_dwLimitCacheSize(1024 * 1024 * 100),
+      m_HalftoneLimit(-1),
+      m_bDrawAnnots(false) {}
+
+CPDF_RenderOptions::CPDF_RenderOptions(const CPDF_RenderOptions& rhs)
+    : m_ColorMode(rhs.m_ColorMode),
+      m_BackColor(rhs.m_BackColor),
+      m_ForeColor(rhs.m_ForeColor),
+      m_Flags(rhs.m_Flags),
+      m_Interpolation(rhs.m_Interpolation),
+      m_AddFlags(rhs.m_AddFlags),
+      m_pOCContext(rhs.m_pOCContext),
+      m_dwLimitCacheSize(rhs.m_dwLimitCacheSize),
+      m_HalftoneLimit(rhs.m_HalftoneLimit),
+      m_bDrawAnnots(rhs.m_bDrawAnnots) {}
+
+FX_ARGB CPDF_RenderOptions::TranslateColor(FX_ARGB argb) const {
+  if (m_ColorMode == RENDER_COLOR_NORMAL)
+    return argb;
+
+  if (m_ColorMode == RENDER_COLOR_ALPHA)
+    return argb;
+
+  int a, r, g, b;
+  ArgbDecode(argb, a, r, g, b);
+  int gray = FXRGB2GRAY(r, g, b);
+  if (m_ColorMode == RENDER_COLOR_TWOCOLOR) {
+    int color = (r - gray) * (r - gray) + (g - gray) * (g - gray) +
+                (b - gray) * (b - gray);
+    if (gray < 35 && color < 20)
+      return ArgbEncode(a, m_ForeColor);
+
+    if (gray > 221 && color < 20)
+      return ArgbEncode(a, m_BackColor);
+
+    return argb;
+  }
+  int fr = FXSYS_GetRValue(m_ForeColor);
+  int fg = FXSYS_GetGValue(m_ForeColor);
+  int fb = FXSYS_GetBValue(m_ForeColor);
+  int br = FXSYS_GetRValue(m_BackColor);
+  int bg = FXSYS_GetGValue(m_BackColor);
+  int bb = FXSYS_GetBValue(m_BackColor);
+  r = (br - fr) * gray / 255 + fr;
+  g = (bg - fg) * gray / 255 + fg;
+  b = (bb - fb) * gray / 255 + fb;
+  return ArgbEncode(a, r, g, b);
+}