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authornpm <npm@chromium.org>2016-11-17 10:47:43 -0800
committerCommit bot <commit-bot@chromium.org>2016-11-17 10:47:43 -0800
commit935c6310adacf2f4a4265e831e6cb60dc7a35803 (patch)
tree77f069eb3f7e9f45ffdf58dd11a9b12196515a93 /core/fpdfapi/render/cpdf_docrenderdata.cpp
parentb977720aa7f159ae2c1e9d9b3af1adecff730545 (diff)
downloadpdfium-935c6310adacf2f4a4265e831e6cb60dc7a35803.tar.xz
Move CPDF_DocRenderData from render_int
First CL in an attempt to reduce the class cluttering in fpdf_render_text, fpdf_render_image, and fpdf_render. Review-Url: https://codereview.chromium.org/2507023006
Diffstat (limited to 'core/fpdfapi/render/cpdf_docrenderdata.cpp')
-rw-r--r--core/fpdfapi/render/cpdf_docrenderdata.cpp153
1 files changed, 153 insertions, 0 deletions
diff --git a/core/fpdfapi/render/cpdf_docrenderdata.cpp b/core/fpdfapi/render/cpdf_docrenderdata.cpp
new file mode 100644
index 0000000000..9a1691711b
--- /dev/null
+++ b/core/fpdfapi/render/cpdf_docrenderdata.cpp
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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_docrenderdata.h"
+
+#include <memory>
+
+#include "core/fpdfapi/font/cpdf_type3font.h"
+#include "core/fpdfapi/page/pageint.h"
+#include "core/fpdfapi/parser/cpdf_array.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/render/cpdf_type3cache.h"
+#include "core/fpdfapi/render/render_int.h"
+
+namespace {
+
+const int kMaxOutputs = 16;
+
+} // namespace
+
+CPDF_DocRenderData::CPDF_DocRenderData(CPDF_Document* pPDFDoc)
+ : m_pPDFDoc(pPDFDoc) {}
+
+CPDF_DocRenderData::~CPDF_DocRenderData() {
+ Clear(true);
+}
+
+void CPDF_DocRenderData::Clear(bool bRelease) {
+ for (auto it = m_Type3FaceMap.begin(); it != m_Type3FaceMap.end();) {
+ auto curr_it = it++;
+ CPDF_CountedObject<CPDF_Type3Cache>* cache = curr_it->second;
+ if (bRelease || cache->use_count() < 2) {
+ delete cache->get();
+ delete cache;
+ m_Type3FaceMap.erase(curr_it);
+ }
+ }
+
+ for (auto it = m_TransferFuncMap.begin(); it != m_TransferFuncMap.end();) {
+ auto curr_it = it++;
+ CPDF_CountedObject<CPDF_TransferFunc>* value = curr_it->second;
+ if (bRelease || value->use_count() < 2) {
+ delete value->get();
+ delete value;
+ m_TransferFuncMap.erase(curr_it);
+ }
+ }
+}
+
+CPDF_Type3Cache* CPDF_DocRenderData::GetCachedType3(CPDF_Type3Font* pFont) {
+ CPDF_CountedObject<CPDF_Type3Cache>* pCache;
+ auto it = m_Type3FaceMap.find(pFont);
+ if (it == m_Type3FaceMap.end()) {
+ CPDF_Type3Cache* pType3 = new CPDF_Type3Cache(pFont);
+ pCache = new CPDF_CountedObject<CPDF_Type3Cache>(pType3);
+ m_Type3FaceMap[pFont] = pCache;
+ } else {
+ pCache = it->second;
+ }
+ return pCache->AddRef();
+}
+
+void CPDF_DocRenderData::ReleaseCachedType3(CPDF_Type3Font* pFont) {
+ auto it = m_Type3FaceMap.find(pFont);
+ if (it != m_Type3FaceMap.end()) {
+ it->second->RemoveRef();
+ if (it->second->use_count() < 2) {
+ delete it->second->get();
+ delete it->second;
+ m_Type3FaceMap.erase(it);
+ }
+ }
+}
+
+CPDF_TransferFunc* CPDF_DocRenderData::GetTransferFunc(CPDF_Object* pObj) {
+ if (!pObj)
+ return nullptr;
+
+ auto it = m_TransferFuncMap.find(pObj);
+ if (it != m_TransferFuncMap.end()) {
+ CPDF_CountedObject<CPDF_TransferFunc>* pTransferCounter = it->second;
+ return pTransferCounter->AddRef();
+ }
+
+ std::unique_ptr<CPDF_Function> pFuncs[3];
+ bool bUniTransfer = true;
+ bool bIdentity = true;
+ if (CPDF_Array* pArray = pObj->AsArray()) {
+ bUniTransfer = false;
+ if (pArray->GetCount() < 3)
+ return nullptr;
+
+ for (uint32_t i = 0; i < 3; ++i) {
+ pFuncs[2 - i] = CPDF_Function::Load(pArray->GetDirectObjectAt(i));
+ if (!pFuncs[2 - i])
+ return nullptr;
+ }
+ } else {
+ pFuncs[0] = CPDF_Function::Load(pObj);
+ if (!pFuncs[0])
+ return nullptr;
+ }
+ CPDF_TransferFunc* pTransfer = new CPDF_TransferFunc(m_pPDFDoc);
+ CPDF_CountedObject<CPDF_TransferFunc>* pTransferCounter =
+ new CPDF_CountedObject<CPDF_TransferFunc>(pTransfer);
+ m_TransferFuncMap[pObj] = pTransferCounter;
+ FX_FLOAT output[kMaxOutputs];
+ FXSYS_memset(output, 0, sizeof(output));
+ FX_FLOAT input;
+ int noutput;
+ for (int v = 0; v < 256; ++v) {
+ input = (FX_FLOAT)v / 255.0f;
+ if (bUniTransfer) {
+ if (pFuncs[0] && pFuncs[0]->CountOutputs() <= kMaxOutputs)
+ pFuncs[0]->Call(&input, 1, output, noutput);
+ int o = FXSYS_round(output[0] * 255);
+ if (o != v)
+ bIdentity = false;
+ for (int i = 0; i < 3; ++i)
+ pTransfer->m_Samples[i * 256 + v] = o;
+ continue;
+ }
+ for (int i = 0; i < 3; ++i) {
+ if (!pFuncs[i] || pFuncs[i]->CountOutputs() > kMaxOutputs) {
+ pTransfer->m_Samples[i * 256 + v] = v;
+ continue;
+ }
+ pFuncs[i]->Call(&input, 1, output, noutput);
+ int o = FXSYS_round(output[0] * 255);
+ if (o != v)
+ bIdentity = false;
+ pTransfer->m_Samples[i * 256 + v] = o;
+ }
+ }
+
+ pTransfer->m_bIdentity = bIdentity;
+ return pTransferCounter->AddRef();
+}
+
+void CPDF_DocRenderData::ReleaseTransferFunc(CPDF_Object* pObj) {
+ auto it = m_TransferFuncMap.find(pObj);
+ if (it != m_TransferFuncMap.end()) {
+ it->second->RemoveRef();
+ if (it->second->use_count() < 2) {
+ delete it->second->get();
+ delete it->second;
+ m_TransferFuncMap.erase(it);
+ }
+ }
+}