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// 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_dwLimitCacheSize(1024 * 1024 * 100),
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_dwLimitCacheSize(rhs.m_dwLimitCacheSize),
m_bDrawAnnots(rhs.m_bDrawAnnots),
m_pOCContext(rhs.m_pOCContext) {}
CPDF_RenderOptions::~CPDF_RenderOptions() {}
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;
int r;
int g;
int b;
std::tie(a, r, g, b) = ArgbDecode(argb);
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);
}
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