Make CPDF_TextStateData private to CPDF_TextState.

Review-Url: https://codereview.chromium.org/2313083002

core/fpdfapi/fpdf_page/cpdf_textstate.cpp

diff --git a/core/fpdfapi/fpdf_page/cpdf_textstate.cpp b/core/fpdfapi/fpdf_page/cpdf_textstate.cpp
index feb70ae..4967cca 100644
--- a/core/fpdfapi/fpdf_page/cpdf_textstate.cpp
+++ b/core/fpdfapi/fpdf_page/cpdf_textstate.cpp
@@ -4,7 +4,7 @@
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
-#include "core/fpdfapi/fpdf_page/cpdf_textstate.h"
+#include "core/fpdfapi/fpdf_page/include/cpdf_textstate.h"
 
 #include "core/fpdfapi/fpdf_font/include/cpdf_font.h"
 #include "core/fpdfapi/fpdf_page/pageint.h"
@@ -88,3 +88,100 @@
 FX_FLOAT* CPDF_TextState::GetMutableCTM() {
   return m_Ref.GetPrivateCopy()->m_CTM;
 }
+
+CPDF_TextState::TextData::TextData()
+    : m_pFont(nullptr),
+      m_pDocument(nullptr),
+      m_FontSize(1.0f),
+      m_CharSpace(0),
+      m_WordSpace(0),
+      m_TextMode(TextRenderingMode::MODE_FILL) {
+  m_Matrix[0] = m_Matrix[3] = 1.0f;
+  m_Matrix[1] = m_Matrix[2] = 0;
+  m_CTM[0] = m_CTM[3] = 1.0f;
+  m_CTM[1] = m_CTM[2] = 0;
+}
+
+CPDF_TextState::TextData::TextData(const TextData& that)
+    : m_pFont(that.m_pFont),
+      m_pDocument(that.m_pDocument),
+      m_FontSize(that.m_FontSize),
+      m_CharSpace(that.m_CharSpace),
+      m_WordSpace(that.m_WordSpace),
+      m_TextMode(that.m_TextMode) {
+  for (int i = 0; i < 4; ++i)
+    m_Matrix[i] = that.m_Matrix[i];
+
+  for (int i = 0; i < 4; ++i)
+    m_CTM[i] = that.m_CTM[i];
+
+  if (m_pDocument && m_pFont) {
+    m_pFont =
+        m_pDocument->GetPageData()->GetFont(m_pFont->GetFontDict(), FALSE);
+  }
+}
+
+CPDF_TextState::TextData::~TextData() {
+  if (m_pDocument && m_pFont) {
+    CPDF_DocPageData* pPageData = m_pDocument->GetPageData();
+    if (pPageData && !pPageData->IsForceClear())
+      pPageData->ReleaseFont(m_pFont->GetFontDict());
+  }
+}
+
+void CPDF_TextState::TextData::SetFont(CPDF_Font* pFont) {
+  CPDF_Document* pDoc = m_pDocument;
+  CPDF_DocPageData* pPageData = pDoc ? pDoc->GetPageData() : nullptr;
+  if (pPageData && m_pFont && !pPageData->IsForceClear())
+    pPageData->ReleaseFont(m_pFont->GetFontDict());
+
+  m_pDocument = pFont ? pFont->m_pDocument : nullptr;
+  m_pFont = pFont;
+}
+
+FX_FLOAT CPDF_TextState::TextData::GetFontSizeV() const {
+  return FXSYS_fabs(FXSYS_sqrt2(m_Matrix[1], m_Matrix[3]) * m_FontSize);
+}
+
+FX_FLOAT CPDF_TextState::TextData::GetFontSizeH() const {
+  return FXSYS_fabs(FXSYS_sqrt2(m_Matrix[0], m_Matrix[2]) * m_FontSize);
+}
+
+FX_FLOAT CPDF_TextState::TextData::GetBaselineAngle() const {
+  return FXSYS_atan2(m_Matrix[2], m_Matrix[0]);
+}
+
+FX_FLOAT CPDF_TextState::TextData::GetShearAngle() const {
+  return GetBaselineAngle() + FXSYS_atan2(m_Matrix[1], m_Matrix[3]);
+}
+
+bool SetTextRenderingModeFromInt(int iMode, TextRenderingMode* mode) {
+  if (iMode < 0 || iMode > 7)
+    return false;
+  *mode = static_cast<TextRenderingMode>(iMode);
+  return true;
+}
+
+bool TextRenderingModeIsClipMode(const TextRenderingMode& mode) {
+  switch (mode) {
+    case TextRenderingMode::MODE_FILL_CLIP:
+    case TextRenderingMode::MODE_STROKE_CLIP:
+    case TextRenderingMode::MODE_FILL_STROKE_CLIP:
+    case TextRenderingMode::MODE_CLIP:
+      return true;
+    default:
+      return false;
+  }
+}
+
+bool TextRenderingModeIsStrokeMode(const TextRenderingMode& mode) {
+  switch (mode) {
+    case TextRenderingMode::MODE_STROKE:
+    case TextRenderingMode::MODE_FILL_STROKE:
+    case TextRenderingMode::MODE_STROKE_CLIP:
+    case TextRenderingMode::MODE_FILL_STROKE_CLIP:
+      return true;
+    default:
+      return false;
+  }
+}