Move core/fpdfapi/fpdf_page to core/fpdfapi/page

BUG=pdfium:603

Review-Url: https://codereview.chromium.org/2386423004

1 files changed, 175 insertions, 0 deletions

diff --git a/core/fpdfapi/page/cpdf_allstates.cpp b/core/fpdfapi/page/cpdf_allstates.cpp
new file mode 100644
index 0000000000..f4a99c3206
--- /dev/null
+++ b/core/fpdfapi/page/cpdf_allstates.cpp
@@ -0,0 +1,175 @@
+// 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/page/cpdf_allstates.h"
+
+#include "core/fpdfapi/fpdf_parser/cpdf_array.h"
+#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h"
+#include "core/fpdfapi/page/pageint.h"
+#include "core/fxge/cfx_graphstatedata.h"
+
+namespace {
+
+FX_FLOAT ClipFloat(FX_FLOAT f) {
+  return std::max(0.0f, std::min(1.0f, f));
+}
+
+}  // namespace
+
+CPDF_AllStates::CPDF_AllStates() {
+  m_TextX = m_TextY = m_TextLineX = m_TextLineY = 0;
+  m_TextLeading = 0;
+  m_TextRise = 0;
+  m_TextHorzScale = 1.0f;
+}
+
+CPDF_AllStates::~CPDF_AllStates() {}
+
+void CPDF_AllStates::Copy(const CPDF_AllStates& src) {
+  CopyStates(src);
+  m_TextMatrix = src.m_TextMatrix;
+  m_ParentMatrix = src.m_ParentMatrix;
+  m_CTM = src.m_CTM;
+  m_TextX = src.m_TextX;
+  m_TextY = src.m_TextY;
+  m_TextLineX = src.m_TextLineX;
+  m_TextLineY = src.m_TextLineY;
+  m_TextLeading = src.m_TextLeading;
+  m_TextRise = src.m_TextRise;
+  m_TextHorzScale = src.m_TextHorzScale;
+}
+
+void CPDF_AllStates::SetLineDash(CPDF_Array* pArray,
+                                 FX_FLOAT phase,
+                                 FX_FLOAT scale) {
+  m_GraphState.SetLineDash(pArray, phase, scale);
+}
+
+void CPDF_AllStates::ProcessExtGS(CPDF_Dictionary* pGS,
+                                  CPDF_StreamContentParser* pParser) {
+  for (const auto& it : *pGS) {
+    const CFX_ByteString& key_str = it.first;
+    CPDF_Object* pElement = it.second;
+    CPDF_Object* pObject = pElement ? pElement->GetDirect() : nullptr;
+    if (!pObject)
+      continue;
+
+    uint32_t key = key_str.GetID();
+    switch (key) {
+      case FXBSTR_ID('L', 'W', 0, 0):
+        m_GraphState.SetLineWidth(pObject->GetNumber());
+        break;
+      case FXBSTR_ID('L', 'C', 0, 0):
+        m_GraphState.SetLineCap(
+            static_cast<CFX_GraphStateData::LineCap>(pObject->GetInteger()));
+        break;
+      case FXBSTR_ID('L', 'J', 0, 0):
+        m_GraphState.SetLineJoin(
+            static_cast<CFX_GraphStateData::LineJoin>(pObject->GetInteger()));
+        break;
+      case FXBSTR_ID('M', 'L', 0, 0):
+        m_GraphState.SetMiterLimit(pObject->GetNumber());
+        break;
+      case FXBSTR_ID('D', 0, 0, 0): {
+        CPDF_Array* pDash = pObject->AsArray();
+        if (!pDash)
+          break;
+
+        CPDF_Array* pArray = pDash->GetArrayAt(0);
+        if (!pArray)
+          break;
+
+        SetLineDash(pArray, pDash->GetNumberAt(1), 1.0f);
+        break;
+      }
+      case FXBSTR_ID('R', 'I', 0, 0):
+        m_GeneralState.SetRenderIntent(pObject->GetString());
+        break;
+      case FXBSTR_ID('F', 'o', 'n', 't'): {
+        CPDF_Array* pFont = pObject->AsArray();
+        if (!pFont)
+          break;
+
+        m_TextState.SetFontSize(pFont->GetNumberAt(1));
+        m_TextState.SetFont(pParser->FindFont(pFont->GetStringAt(0)));
+        break;
+      }
+      case FXBSTR_ID('T', 'R', 0, 0):
+        if (pGS->KeyExist("TR2")) {
+          continue;
+        }
+      case FXBSTR_ID('T', 'R', '2', 0):
+        m_GeneralState.SetTR(pObject && !pObject->IsName() ? pObject : nullptr);
+        break;
+      case FXBSTR_ID('B', 'M', 0, 0): {
+        CPDF_Array* pArray = pObject->AsArray();
+        m_GeneralState.SetBlendMode(pArray ? pArray->GetStringAt(0)
+                                           : pObject->GetString());
+        if (m_GeneralState.GetBlendType() > FXDIB_BLEND_MULTIPLY)
+          pParser->GetPageObjectHolder()->SetBackgroundAlphaNeeded(TRUE);
+        break;
+      }
+      case FXBSTR_ID('S', 'M', 'a', 's'):
+        if (ToDictionary(pObject)) {
+          m_GeneralState.SetSoftMask(pObject);
+          m_GeneralState.SetSMaskMatrix(pParser->GetCurStates()->m_CTM);
+        } else {
+          m_GeneralState.SetSoftMask(nullptr);
+        }
+        break;
+      case FXBSTR_ID('C', 'A', 0, 0):
+        m_GeneralState.SetStrokeAlpha(ClipFloat(pObject->GetNumber()));
+        break;
+      case FXBSTR_ID('c', 'a', 0, 0):
+        m_GeneralState.SetFillAlpha(ClipFloat(pObject->GetNumber()));
+        break;
+      case FXBSTR_ID('O', 'P', 0, 0):
+        m_GeneralState.SetStrokeOP(!!pObject->GetInteger());
+        if (!pGS->KeyExist("op"))
+          m_GeneralState.SetFillOP(!!pObject->GetInteger());
+        break;
+      case FXBSTR_ID('o', 'p', 0, 0):
+        m_GeneralState.SetFillOP(!!pObject->GetInteger());
+        break;
+      case FXBSTR_ID('O', 'P', 'M', 0):
+        m_GeneralState.SetOPMode(pObject->GetInteger());
+        break;
+      case FXBSTR_ID('B', 'G', 0, 0):
+        if (pGS->KeyExist("BG2")) {
+          continue;
+        }
+      case FXBSTR_ID('B', 'G', '2', 0):
+        m_GeneralState.SetBG(pObject);
+        break;
+      case FXBSTR_ID('U', 'C', 'R', 0):
+        if (pGS->KeyExist("UCR2")) {
+          continue;
+        }
+      case FXBSTR_ID('U', 'C', 'R', '2'):
+        m_GeneralState.SetUCR(pObject);
+        break;
+      case FXBSTR_ID('H', 'T', 0, 0):
+        m_GeneralState.SetHT(pObject);
+        break;
+      case FXBSTR_ID('F', 'L', 0, 0):
+        m_GeneralState.SetFlatness(pObject->GetNumber());
+        break;
+      case FXBSTR_ID('S', 'M', 0, 0):
+        m_GeneralState.SetSmoothness(pObject->GetNumber());
+        break;
+      case FXBSTR_ID('S', 'A', 0, 0):
+        m_GeneralState.SetStrokeAdjust(!!pObject->GetInteger());
+        break;
+      case FXBSTR_ID('A', 'I', 'S', 0):
+        m_GeneralState.SetAlphaSource(!!pObject->GetInteger());
+        break;
+      case FXBSTR_ID('T', 'K', 0, 0):
+        m_GeneralState.SetTextKnockout(!!pObject->GetInteger());
+        break;
+    }
+  }
+  m_GeneralState.SetMatrix(m_CTM);
+}