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