Move fpdfsdk/pdfwindow to fpdfsdk/pwl

This makes it clearer what the directory contains.

Change-Id: I34fc38dd30b8e0f6e057052ea33c8b5a10f1b9c3
Reviewed-on: https://pdfium-review.googlesource.com/8791
Commit-Queue: dsinclair <dsinclair@chromium.org>
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Reviewed-by: Tom Sepez <tsepez@chromium.org>

1 files changed, 1992 insertions, 0 deletions

diff --git a/fpdfsdk/pwl/cpwl_appstream.cpp b/fpdfsdk/pwl/cpwl_appstream.cpp
new file mode 100644
index 0000000000..fe401639da
--- /dev/null
+++ b/fpdfsdk/pwl/cpwl_appstream.cpp
@@ -0,0 +1,1992 @@
+// Copyright 2017 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 "fpdfsdk/pwl/cpwl_appstream.h"
+
+#include <utility>
+
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_document.h"
+#include "core/fpdfapi/parser/cpdf_name.h"
+#include "core/fpdfapi/parser/cpdf_number.h"
+#include "core/fpdfapi/parser/cpdf_reference.h"
+#include "core/fpdfapi/parser/cpdf_stream.h"
+#include "core/fpdfapi/parser/cpdf_string.h"
+#include "core/fpdfapi/parser/fpdf_parser_decode.h"
+#include "core/fpdfdoc/cpvt_word.h"
+#include "fpdfsdk/cpdfsdk_formfillenvironment.h"
+#include "fpdfsdk/cpdfsdk_interform.h"
+#include "fpdfsdk/cpdfsdk_pageview.h"
+#include "fpdfsdk/cpdfsdk_widget.h"
+#include "fpdfsdk/formfiller/cba_fontmap.h"
+#include "fpdfsdk/pwl/cpwl_edit.h"
+#include "fpdfsdk/pwl/cpwl_edit_impl.h"
+#include "fpdfsdk/pwl/cpwl_icon.h"
+#include "fpdfsdk/pwl/cpwl_wnd.h"
+
+namespace {
+
+// Checkbox & radiobutton styles.
+enum class CheckStyle { kCheck = 0, kCircle, kCross, kDiamond, kSquare, kStar };
+
+// Pushbutton layout styles.
+enum class ButtonStyle {
+  kLabel = 0,
+  kIcon,
+  kIconTopLabelBottom,
+  kIconBottomLabelTop,
+  kIconLeftLabelRight,
+  kIconRightLabelLeft,
+  kLabelOverIcon
+};
+
+const char kAppendRectOperator[] = "re";
+const char kConcatMatrixOperator[] = "cm";
+const char kCurveToOperator[] = "c";
+const char kEndPathNoFillOrStrokeOperator[] = "n";
+const char kFillOperator[] = "f";
+const char kFillEvenOddOperator[] = "f*";
+const char kInvokeNamedXObjectOperator[] = "Do";
+const char kLineToOperator[] = "l";
+const char kMarkedSequenceBeginOperator[] = "BMC";
+const char kMarkedSequenceEndOperator[] = "EMC";
+const char kMoveTextPositionOperator[] = "Td";
+const char kMoveToOperator[] = "m";
+const char kSetCharacterSpacingOperator[] = "Tc";
+const char kSetCMYKOperator[] = "k";
+const char kSetCMKYStrokedOperator[] = "K";
+const char kSetDashOperator[] = "d";
+const char kSetGrayOperator[] = "g";
+const char kSetGrayStrokedOperator[] = "G";
+const char kSetLineCapStyleOperator[] = "J";
+const char kSetLineJoinStyleOperator[] = "j";
+const char kSetLineWidthOperator[] = "w";
+const char kSetNonZeroWindingClipOperator[] = "W";
+const char kSetRGBOperator[] = "rg";
+const char kSetRGBStrokedOperator[] = "RG";
+const char kSetTextFontAndSizeOperator[] = "Tf";
+const char kSetTextScaleHorizontalOperator[] = "Tz";
+const char kShowTextOperator[] = "Tj";
+const char kStateRestoreOperator[] = "Q";
+const char kStateSaveOperator[] = "q";
+const char kStrokeOperator[] = "S";
+const char kTextBeginOperator[] = "BT";
+const char kTextEndOperator[] = "ET";
+
+class AutoClosedCommand {
+ public:
+  AutoClosedCommand(std::ostringstream* stream,
+                    CFX_ByteString open,
+                    CFX_ByteString close)
+      : stream_(stream), close_(close) {
+    *stream_ << open << "\n";
+  }
+
+  virtual ~AutoClosedCommand() { *stream_ << close_ << "\n"; }
+
+ private:
+  std::ostringstream* stream_;
+  CFX_ByteString close_;
+};
+
+class AutoClosedQCommand : public AutoClosedCommand {
+ public:
+  explicit AutoClosedQCommand(std::ostringstream* stream)
+      : AutoClosedCommand(stream, kStateSaveOperator, kStateRestoreOperator) {}
+  ~AutoClosedQCommand() override {}
+};
+
+CFX_ByteString GetColorAppStream(const CFX_Color& color,
+                                 const bool& bFillOrStroke) {
+  std::ostringstream sColorStream;
+
+  switch (color.nColorType) {
+    case COLORTYPE_RGB:
+      sColorStream << color.fColor1 << " " << color.fColor2 << " "
+                   << color.fColor3 << " "
+                   << (bFillOrStroke ? kSetRGBOperator : kSetRGBStrokedOperator)
+                   << "\n";
+      break;
+    case COLORTYPE_GRAY:
+      sColorStream << color.fColor1 << " "
+                   << (bFillOrStroke ? kSetGrayOperator
+                                     : kSetGrayStrokedOperator)
+                   << "\n";
+      break;
+    case COLORTYPE_CMYK:
+      sColorStream << color.fColor1 << " " << color.fColor2 << " "
+                   << color.fColor3 << " " << color.fColor4 << " "
+                   << (bFillOrStroke ? kSetCMYKOperator
+                                     : kSetCMKYStrokedOperator)
+                   << "\n";
+      break;
+  }
+
+  return CFX_ByteString(sColorStream);
+}
+
+CFX_ByteString GetAP_Check(const CFX_FloatRect& crBBox) {
+  const float fWidth = crBBox.right - crBBox.left;
+  const float fHeight = crBBox.top - crBBox.bottom;
+
+  CFX_PointF pts[8][3] = {{CFX_PointF(0.28f, 0.52f), CFX_PointF(0.27f, 0.48f),
+                           CFX_PointF(0.29f, 0.40f)},
+                          {CFX_PointF(0.30f, 0.33f), CFX_PointF(0.31f, 0.29f),
+                           CFX_PointF(0.31f, 0.28f)},
+                          {CFX_PointF(0.39f, 0.28f), CFX_PointF(0.49f, 0.29f),
+                           CFX_PointF(0.77f, 0.67f)},
+                          {CFX_PointF(0.76f, 0.68f), CFX_PointF(0.78f, 0.69f),
+                           CFX_PointF(0.76f, 0.75f)},
+                          {CFX_PointF(0.76f, 0.75f), CFX_PointF(0.73f, 0.80f),
+                           CFX_PointF(0.68f, 0.75f)},
+                          {CFX_PointF(0.68f, 0.74f), CFX_PointF(0.68f, 0.74f),
+                           CFX_PointF(0.44f, 0.47f)},
+                          {CFX_PointF(0.43f, 0.47f), CFX_PointF(0.40f, 0.47f),
+                           CFX_PointF(0.41f, 0.58f)},
+                          {CFX_PointF(0.40f, 0.60f), CFX_PointF(0.28f, 0.66f),
+                           CFX_PointF(0.30f, 0.56f)}};
+
+  for (size_t i = 0; i < FX_ArraySize(pts); ++i) {
+    for (size_t j = 0; j < FX_ArraySize(pts[0]); ++j) {
+      pts[i][j].x = pts[i][j].x * fWidth + crBBox.left;
+      pts[i][j].y *= pts[i][j].y * fHeight + crBBox.bottom;
+    }
+  }
+
+  std::ostringstream csAP;
+  csAP << pts[0][0].x << " " << pts[0][0].y << " " << kMoveToOperator << "\n";
+
+  for (size_t i = 0; i < FX_ArraySize(pts); ++i) {
+    size_t nNext = i < FX_ArraySize(pts) - 1 ? i + 1 : 0;
+
+    float px1 = pts[i][1].x - pts[i][0].x;
+    float py1 = pts[i][1].y - pts[i][0].y;
+    float px2 = pts[i][2].x - pts[nNext][0].x;
+    float py2 = pts[i][2].y - pts[nNext][0].y;
+
+    csAP << pts[i][0].x + px1 * FX_BEZIER << " "
+         << pts[i][0].y + py1 * FX_BEZIER << " "
+         << pts[nNext][0].x + px2 * FX_BEZIER << " "
+         << pts[nNext][0].y + py2 * FX_BEZIER << " " << pts[nNext][0].x << " "
+         << pts[nNext][0].y << " " << kCurveToOperator << "\n";
+  }
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAP_Circle(const CFX_FloatRect& crBBox) {
+  std::ostringstream csAP;
+
+  float fWidth = crBBox.right - crBBox.left;
+  float fHeight = crBBox.top - crBBox.bottom;
+
+  CFX_PointF pt1(crBBox.left, crBBox.bottom + fHeight / 2);
+  CFX_PointF pt2(crBBox.left + fWidth / 2, crBBox.top);
+  CFX_PointF pt3(crBBox.right, crBBox.bottom + fHeight / 2);
+  CFX_PointF pt4(crBBox.left + fWidth / 2, crBBox.bottom);
+
+  csAP << pt1.x << " " << pt1.y << " " << kMoveToOperator << "\n";
+
+  float px = pt2.x - pt1.x;
+  float py = pt2.y - pt1.y;
+
+  csAP << pt1.x << " " << pt1.y + py * FX_BEZIER << " "
+       << pt2.x - px * FX_BEZIER << " " << pt2.y << " " << pt2.x << " " << pt2.y
+       << " " << kCurveToOperator << "\n";
+
+  px = pt3.x - pt2.x;
+  py = pt2.y - pt3.y;
+
+  csAP << pt2.x + px * FX_BEZIER << " " << pt2.y << " " << pt3.x << " "
+       << pt3.y + py * FX_BEZIER << " " << pt3.x << " " << pt3.y << " "
+       << kCurveToOperator << "\n";
+
+  px = pt3.x - pt4.x;
+  py = pt3.y - pt4.y;
+
+  csAP << pt3.x << " " << pt3.y - py * FX_BEZIER << " "
+       << pt4.x + px * FX_BEZIER << " " << pt4.y << " " << pt4.x << " " << pt4.y
+       << " " << kCurveToOperator << "\n";
+
+  px = pt4.x - pt1.x;
+  py = pt1.y - pt4.y;
+
+  csAP << pt4.x - px * FX_BEZIER << " " << pt4.y << " " << pt1.x << " "
+       << pt1.y - py * FX_BEZIER << " " << pt1.x << " " << pt1.y << " "
+       << kCurveToOperator << "\n";
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAP_Cross(const CFX_FloatRect& crBBox) {
+  std::ostringstream csAP;
+
+  csAP << crBBox.left << " " << crBBox.top << " " << kMoveToOperator << "\n";
+  csAP << crBBox.right << " " << crBBox.bottom << " " << kLineToOperator
+       << "\n";
+  csAP << crBBox.left << " " << crBBox.bottom << " " << kMoveToOperator << "\n";
+  csAP << crBBox.right << " " << crBBox.top << " " << kLineToOperator << "\n";
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAP_Diamond(const CFX_FloatRect& crBBox) {
+  std::ostringstream csAP;
+
+  float fWidth = crBBox.right - crBBox.left;
+  float fHeight = crBBox.top - crBBox.bottom;
+
+  CFX_PointF pt1(crBBox.left, crBBox.bottom + fHeight / 2);
+  CFX_PointF pt2(crBBox.left + fWidth / 2, crBBox.top);
+  CFX_PointF pt3(crBBox.right, crBBox.bottom + fHeight / 2);
+  CFX_PointF pt4(crBBox.left + fWidth / 2, crBBox.bottom);
+
+  csAP << pt1.x << " " << pt1.y << " " << kMoveToOperator << "\n";
+  csAP << pt2.x << " " << pt2.y << " " << kLineToOperator << "\n";
+  csAP << pt3.x << " " << pt3.y << " " << kLineToOperator << "\n";
+  csAP << pt4.x << " " << pt4.y << " " << kLineToOperator << "\n";
+  csAP << pt1.x << " " << pt1.y << " " << kLineToOperator << "\n";
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAP_Square(const CFX_FloatRect& crBBox) {
+  std::ostringstream csAP;
+
+  csAP << crBBox.left << " " << crBBox.top << " " << kMoveToOperator << "\n";
+  csAP << crBBox.right << " " << crBBox.top << " " << kLineToOperator << "\n";
+  csAP << crBBox.right << " " << crBBox.bottom << " " << kLineToOperator
+       << "\n";
+  csAP << crBBox.left << " " << crBBox.bottom << " " << kLineToOperator << "\n";
+  csAP << crBBox.left << " " << crBBox.top << " " << kLineToOperator << "\n";
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAP_Star(const CFX_FloatRect& crBBox) {
+  std::ostringstream csAP;
+
+  float fRadius = (crBBox.top - crBBox.bottom) / (1 + (float)cos(FX_PI / 5.0f));
+  CFX_PointF ptCenter = CFX_PointF((crBBox.left + crBBox.right) / 2.0f,
+                                   (crBBox.top + crBBox.bottom) / 2.0f);
+
+  float px[5];
+  float py[5];
+  float fAngel = FX_PI / 10.0f;
+  for (int32_t i = 0; i < 5; i++) {
+    px[i] = ptCenter.x + fRadius * (float)cos(fAngel);
+    py[i] = ptCenter.y + fRadius * (float)sin(fAngel);
+    fAngel += FX_PI * 2 / 5.0f;
+  }
+
+  csAP << px[0] << " " << py[0] << " " << kMoveToOperator << "\n";
+
+  int32_t nNext = 0;
+  for (int32_t j = 0; j < 5; j++) {
+    nNext += 2;
+    if (nNext >= 5)
+      nNext -= 5;
+    csAP << px[nNext] << " " << py[nNext] << " " << kLineToOperator << "\n";
+  }
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAP_HalfCircle(const CFX_FloatRect& crBBox, float fRotate) {
+  std::ostringstream csAP;
+
+  float fWidth = crBBox.right - crBBox.left;
+  float fHeight = crBBox.top - crBBox.bottom;
+
+  CFX_PointF pt1(-fWidth / 2, 0);
+  CFX_PointF pt2(0, fHeight / 2);
+  CFX_PointF pt3(fWidth / 2, 0);
+
+  float px;
+  float py;
+
+  csAP << cos(fRotate) << " " << sin(fRotate) << " " << -sin(fRotate) << " "
+       << cos(fRotate) << " " << crBBox.left + fWidth / 2 << " "
+       << crBBox.bottom + fHeight / 2 << " " << kConcatMatrixOperator << "\n";
+
+  csAP << pt1.x << " " << pt1.y << " " << kMoveToOperator << "\n";
+
+  px = pt2.x - pt1.x;
+  py = pt2.y - pt1.y;
+
+  csAP << pt1.x << " " << pt1.y + py * FX_BEZIER << " "
+       << pt2.x - px * FX_BEZIER << " " << pt2.y << " " << pt2.x << " " << pt2.y
+       << " " << kCurveToOperator << "\n";
+
+  px = pt3.x - pt2.x;
+  py = pt2.y - pt3.y;
+
+  csAP << pt2.x + px * FX_BEZIER << " " << pt2.y << " " << pt3.x << " "
+       << pt3.y + py * FX_BEZIER << " " << pt3.x << " " << pt3.y << " "
+       << kCurveToOperator << "\n";
+
+  return CFX_ByteString(csAP);
+}
+
+CFX_ByteString GetAppStream_Check(const CFX_FloatRect& rcBBox,
+                                  const CFX_Color& crText) {
+  std::ostringstream sAP;
+  {
+    AutoClosedQCommand q(&sAP);
+    sAP << GetColorAppStream(crText, true) << GetAP_Check(rcBBox)
+        << kFillOperator << "\n";
+  }
+  return CFX_ByteString(sAP);
+}
+
+CFX_ByteString GetAppStream_Circle(const CFX_FloatRect& rcBBox,
+                                   const CFX_Color& crText) {
+  std::ostringstream sAP;
+  {
+    AutoClosedQCommand q(&sAP);
+    sAP << GetColorAppStream(crText, true) << GetAP_Circle(rcBBox)
+        << kFillOperator << "\n";
+  }
+  return CFX_ByteString(sAP);
+}
+
+CFX_ByteString GetAppStream_Cross(const CFX_FloatRect& rcBBox,
+                                  const CFX_Color& crText) {
+  std::ostringstream sAP;
+  {
+    AutoClosedQCommand q(&sAP);
+    sAP << GetColorAppStream(crText, false) << GetAP_Cross(rcBBox)
+        << kStrokeOperator << "\n";
+  }
+  return CFX_ByteString(sAP);
+}
+
+CFX_ByteString GetAppStream_Diamond(const CFX_FloatRect& rcBBox,
+                                    const CFX_Color& crText) {
+  std::ostringstream sAP;
+  {
+    AutoClosedQCommand q(&sAP);
+    sAP << "1 " << kSetLineWidthOperator << "\n"
+        << GetColorAppStream(crText, true) << GetAP_Diamond(rcBBox)
+        << kFillOperator << "\n";
+  }
+  return CFX_ByteString(sAP);
+}
+
+CFX_ByteString GetAppStream_Square(const CFX_FloatRect& rcBBox,
+                                   const CFX_Color& crText) {
+  std::ostringstream sAP;
+  {
+    AutoClosedQCommand q(&sAP);
+    sAP << GetColorAppStream(crText, true) << GetAP_Square(rcBBox)
+        << kFillOperator << "\n";
+  }
+  return CFX_ByteString(sAP);
+}
+
+CFX_ByteString GetAppStream_Star(const CFX_FloatRect& rcBBox,
+                                 const CFX_Color& crText) {
+  std::ostringstream sAP;
+  {
+    AutoClosedQCommand q(&sAP);
+    sAP << GetColorAppStream(crText, true) << GetAP_Star(rcBBox)
+        << kFillOperator << "\n";
+  }
+  return CFX_ByteString(sAP);
+}
+
+CFX_ByteString GetCircleFillAppStream(const CFX_FloatRect& rect,
+                                      const CFX_Color& color) {
+  std::ostringstream sAppStream;
+  CFX_ByteString sColor = GetColorAppStream(color, true);
+  if (sColor.GetLength() > 0) {
+    AutoClosedQCommand q(&sAppStream);
+    sAppStream << sColor << GetAP_Circle(rect) << kFillOperator << "\n";
+  }
+  return CFX_ByteString(sAppStream);
+}
+
+CFX_ByteString GetCircleBorderAppStream(const CFX_FloatRect& rect,
+                                        float fWidth,
+                                        const CFX_Color& color,
+                                        const CFX_Color& crLeftTop,
+                                        const CFX_Color& crRightBottom,
+                                        BorderStyle nStyle,
+                                        const CPWL_Dash& dash) {
+  std::ostringstream sAppStream;
+  CFX_ByteString sColor;
+
+  if (fWidth > 0.0f) {
+    AutoClosedQCommand q(&sAppStream);
+
+    float fHalfWidth = fWidth / 2.0f;
+    CFX_FloatRect rect_by_2 = rect.GetDeflated(fHalfWidth, fHalfWidth);
+
+    float div = fHalfWidth * 0.75f;
+    CFX_FloatRect rect_by_75 = rect.GetDeflated(div, div);
+    switch (nStyle) {
+      default:
+      case BorderStyle::SOLID:
+      case BorderStyle::UNDERLINE: {
+        sColor = GetColorAppStream(color, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_Circle(rect_by_2) << " "
+                     << kStrokeOperator << "\n";
+        }
+      } break;
+      case BorderStyle::DASH: {
+        sColor = GetColorAppStream(color, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fWidth << " " << kSetLineWidthOperator << "\n"
+                     << "[" << dash.nDash << " " << dash.nGap << "] "
+                     << dash.nPhase << " " << kSetDashOperator << "\n"
+                     << sColor << GetAP_Circle(rect_by_2) << " "
+                     << kStrokeOperator << "\n";
+        }
+      } break;
+      case BorderStyle::BEVELED: {
+        sColor = GetColorAppStream(color, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fHalfWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_Circle(rect) << " " << kStrokeOperator
+                     << "\n";
+        }
+
+        sColor = GetColorAppStream(crLeftTop, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fHalfWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_HalfCircle(rect_by_75, FX_PI / 4.0f)
+                     << " " << kStrokeOperator << "\n";
+        }
+
+        sColor = GetColorAppStream(crRightBottom, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fHalfWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_HalfCircle(rect_by_75, FX_PI * 5 / 4.0f)
+                     << " " << kStrokeOperator << "\n";
+        }
+      } break;
+      case BorderStyle::INSET: {
+        sColor = GetColorAppStream(color, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fHalfWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_Circle(rect) << " " << kStrokeOperator
+                     << "\n";
+        }
+
+        sColor = GetColorAppStream(crLeftTop, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fHalfWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_HalfCircle(rect_by_75, FX_PI / 4.0f)
+                     << " " << kStrokeOperator << "\n";
+        }
+
+        sColor = GetColorAppStream(crRightBottom, false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q2(&sAppStream);
+          sAppStream << fHalfWidth << " " << kSetLineWidthOperator << "\n"
+                     << sColor << GetAP_HalfCircle(rect_by_75, FX_PI * 5 / 4.0f)
+                     << " " << kStrokeOperator << "\n";
+        }
+      } break;
+    }
+  }
+  return CFX_ByteString(sAppStream);
+}
+
+CFX_ByteString GetCheckBoxAppStream(const CFX_FloatRect& rcBBox,
+                                    CheckStyle nStyle,
+                                    const CFX_Color& crText) {
+  CFX_FloatRect rcCenter = rcBBox.GetCenterSquare();
+  switch (nStyle) {
+    default:
+    case CheckStyle::kCheck:
+      return GetAppStream_Check(rcCenter, crText);
+    case CheckStyle::kCircle:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Circle(rcCenter, crText);
+    case CheckStyle::kCross:
+      return GetAppStream_Cross(rcCenter, crText);
+    case CheckStyle::kDiamond:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Diamond(rcCenter, crText);
+    case CheckStyle::kSquare:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Square(rcCenter, crText);
+    case CheckStyle::kStar:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Star(rcCenter, crText);
+  }
+}
+
+CFX_ByteString GetRadioButtonAppStream(const CFX_FloatRect& rcBBox,
+                                       CheckStyle nStyle,
+                                       const CFX_Color& crText) {
+  CFX_FloatRect rcCenter = rcBBox.GetCenterSquare();
+  switch (nStyle) {
+    default:
+    case CheckStyle::kCheck:
+      return GetAppStream_Check(rcCenter, crText);
+    case CheckStyle::kCircle:
+      rcCenter.Scale(1.0f / 2.0f);
+      return GetAppStream_Circle(rcCenter, crText);
+    case CheckStyle::kCross:
+      return GetAppStream_Cross(rcCenter, crText);
+    case CheckStyle::kDiamond:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Diamond(rcCenter, crText);
+    case CheckStyle::kSquare:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Square(rcCenter, crText);
+    case CheckStyle::kStar:
+      rcCenter.Scale(2.0f / 3.0f);
+      return GetAppStream_Star(rcCenter, crText);
+  }
+}
+
+CFX_ByteString GetFontSetString(IPVT_FontMap* pFontMap,
+                                int32_t nFontIndex,
+                                float fFontSize) {
+  if (!pFontMap)
+    return CFX_ByteString();
+
+  CFX_ByteString sFontAlias = pFontMap->GetPDFFontAlias(nFontIndex);
+  if (sFontAlias.GetLength() <= 0 || fFontSize <= 0)
+    return CFX_ByteString();
+
+  std::ostringstream sRet;
+  sRet << "/" << sFontAlias << " " << fFontSize << " "
+       << kSetTextFontAndSizeOperator << "\n";
+  return CFX_ByteString(sRet);
+}
+
+CFX_ByteString GetWordRenderString(const CFX_ByteString& strWords) {
+  if (strWords.GetLength() > 0) {
+    return PDF_EncodeString(strWords, false) + " " + kShowTextOperator + "\n";
+  }
+  return CFX_ByteString();
+}
+
+CFX_ByteString GetEditAppStream(CPWL_EditImpl* pEdit,
+                                const CFX_PointF& ptOffset,
+                                bool bContinuous,
+                                uint16_t SubWord) {
+  CPWL_EditImpl_Iterator* pIterator = pEdit->GetIterator();
+  pIterator->SetAt(0);
+
+  std::ostringstream sEditStream;
+  std::ostringstream sWords;
+  int32_t nCurFontIndex = -1;
+  CFX_PointF ptOld;
+  CFX_PointF ptNew;
+  CPVT_WordPlace oldplace;
+
+  while (pIterator->NextWord()) {
+    CPVT_WordPlace place = pIterator->GetAt();
+    if (bContinuous) {
+      if (place.LineCmp(oldplace) != 0) {
+        if (sWords.tellp() > 0) {
+          sEditStream << GetWordRenderString(CFX_ByteString(sWords));
+          sWords.str("");
+        }
+
+        CPVT_Word word;
+        if (pIterator->GetWord(word)) {
+          ptNew = CFX_PointF(word.ptWord.x + ptOffset.x,
+                             word.ptWord.y + ptOffset.y);
+        } else {
+          CPVT_Line line;
+          pIterator->GetLine(line);
+          ptNew = CFX_PointF(line.ptLine.x + ptOffset.x,
+                             line.ptLine.y + ptOffset.y);
+        }
+
+        if (ptNew.x != ptOld.x || ptNew.y != ptOld.y) {
+          sEditStream << ptNew.x - ptOld.x << " " << ptNew.y - ptOld.y << " "
+                      << kMoveTextPositionOperator << "\n";
+
+          ptOld = ptNew;
+        }
+      }
+
+      CPVT_Word word;
+      if (pIterator->GetWord(word)) {
+        if (word.nFontIndex != nCurFontIndex) {
+          if (sWords.tellp() > 0) {
+            sEditStream << GetWordRenderString(CFX_ByteString(sWords));
+            sWords.str("");
+          }
+          sEditStream << GetFontSetString(pEdit->GetFontMap(), word.nFontIndex,
+                                          word.fFontSize);
+          nCurFontIndex = word.nFontIndex;
+        }
+
+        sWords << pEdit->GetPDFWordString(nCurFontIndex, word.Word, SubWord);
+      }
+
+      oldplace = place;
+    } else {
+      CPVT_Word word;
+      if (pIterator->GetWord(word)) {
+        ptNew =
+            CFX_PointF(word.ptWord.x + ptOffset.x, word.ptWord.y + ptOffset.y);
+
+        if (ptNew.x != ptOld.x || ptNew.y != ptOld.y) {
+          sEditStream << ptNew.x - ptOld.x << " " << ptNew.y - ptOld.y << " "
+                      << kMoveTextPositionOperator << "\n";
+          ptOld = ptNew;
+        }
+
+        if (word.nFontIndex != nCurFontIndex) {
+          sEditStream << GetFontSetString(pEdit->GetFontMap(), word.nFontIndex,
+                                          word.fFontSize);
+          nCurFontIndex = word.nFontIndex;
+        }
+
+        sEditStream << GetWordRenderString(
+            pEdit->GetPDFWordString(nCurFontIndex, word.Word, SubWord));
+      }
+    }
+  }
+
+  if (sWords.tellp() > 0) {
+    sEditStream << GetWordRenderString(CFX_ByteString(sWords));
+    sWords.str("");
+  }
+
+  std::ostringstream sAppStream;
+  if (sEditStream.tellp() > 0) {
+    int32_t nHorzScale = pEdit->GetHorzScale();
+    if (nHorzScale != 100) {
+      sAppStream << nHorzScale << " " << kSetTextScaleHorizontalOperator
+                 << "\n";
+    }
+
+    float fCharSpace = pEdit->GetCharSpace();
+    if (!IsFloatZero(fCharSpace)) {
+      sAppStream << fCharSpace << " " << kSetCharacterSpacingOperator << "\n";
+    }
+
+    sAppStream << sEditStream.str();
+  }
+
+  return CFX_ByteString(sAppStream);
+}
+
+CFX_ByteString GenerateIconAppStream(CPDF_IconFit& fit,
+                                     CPDF_Stream* pIconStream,
+                                     const CFX_FloatRect& rcIcon) {
+  if (rcIcon.IsEmpty() || !pIconStream)
+    return CFX_ByteString();
+
+  CPWL_Icon icon;
+  PWL_CREATEPARAM cp;
+  cp.dwFlags = PWS_VISIBLE;
+  icon.Create(cp);
+  icon.SetIconFit(&fit);
+  icon.SetPDFStream(pIconStream);
+  icon.Move(rcIcon, false, false);
+
+  CFX_ByteString sAlias = icon.GetImageAlias();
+  if (sAlias.GetLength() <= 0)
+    return CFX_ByteString();
+
+  CFX_FloatRect rcPlate = icon.GetClientRect();
+  CFX_Matrix mt = icon.GetImageMatrix().GetInverse();
+
+  float fHScale;
+  float fVScale;
+  std::tie(fHScale, fVScale) = icon.GetScale();
+
+  float fx;
+  float fy;
+  std::tie(fx, fy) = icon.GetImageOffset();
+
+  std::ostringstream str;
+  {
+    AutoClosedQCommand q(&str);
+    str << rcPlate.left << " " << rcPlate.bottom << " "
+        << rcPlate.right - rcPlate.left << " " << rcPlate.top - rcPlate.bottom
+        << " " << kAppendRectOperator << " " << kSetNonZeroWindingClipOperator
+        << " " << kEndPathNoFillOrStrokeOperator << "\n";
+
+    str << fHScale << " 0 0 " << fVScale << " " << rcPlate.left + fx << " "
+        << rcPlate.bottom + fy << " " << kConcatMatrixOperator << "\n";
+    str << mt.a << " " << mt.b << " " << mt.c << " " << mt.d << " " << mt.e
+        << " " << mt.f << " " << kConcatMatrixOperator << "\n";
+
+    str << "0 " << kSetGrayOperator << " 0 " << kSetGrayStrokedOperator << " 1 "
+        << kSetLineWidthOperator << " /" << sAlias << " "
+        << kInvokeNamedXObjectOperator << "\n";
+  }
+  icon.Destroy();
+
+  return CFX_ByteString(str);
+}
+
+CFX_ByteString GetPushButtonAppStream(const CFX_FloatRect& rcBBox,
+                                      IPVT_FontMap* pFontMap,
+                                      CPDF_Stream* pIconStream,
+                                      CPDF_IconFit& IconFit,
+                                      const CFX_WideString& sLabel,
+                                      const CFX_Color& crText,
+                                      float fFontSize,
+                                      ButtonStyle nLayOut) {
+  const float fAutoFontScale = 1.0f / 3.0f;
+
+  auto pEdit = pdfium::MakeUnique<CPWL_EditImpl>();
+  pEdit->SetFontMap(pFontMap);
+  pEdit->SetAlignmentH(1, true);
+  pEdit->SetAlignmentV(1, true);
+  pEdit->SetMultiLine(false, true);
+  pEdit->SetAutoReturn(false, true);
+  if (IsFloatZero(fFontSize))
+    pEdit->SetAutoFontSize(true, true);
+  else
+    pEdit->SetFontSize(fFontSize);
+
+  pEdit->Initialize();
+  pEdit->SetText(sLabel);
+
+  CFX_FloatRect rcLabelContent = pEdit->GetContentRect();
+  CFX_FloatRect rcLabel;
+  CFX_FloatRect rcIcon;
+  float fWidth = 0.0f;
+  float fHeight = 0.0f;
+
+  switch (nLayOut) {
+    case ButtonStyle::kLabel:
+      rcLabel = rcBBox;
+      break;
+    case ButtonStyle::kIcon:
+      rcIcon = rcBBox;
+      break;
+    case ButtonStyle::kIconTopLabelBottom:
+      if (pIconStream) {
+        if (IsFloatZero(fFontSize)) {
+          fHeight = rcBBox.top - rcBBox.bottom;
+          rcLabel = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcBBox.right,
+                                  rcBBox.bottom + fHeight * fAutoFontScale);
+          rcIcon =
+              CFX_FloatRect(rcBBox.left, rcLabel.top, rcBBox.right, rcBBox.top);
+        } else {
+          fHeight = rcLabelContent.Height();
+
+          if (rcBBox.bottom + fHeight > rcBBox.top) {
+            rcLabel = rcBBox;
+          } else {
+            rcLabel = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcBBox.right,
+                                    rcBBox.bottom + fHeight);
+            rcIcon = CFX_FloatRect(rcBBox.left, rcLabel.top, rcBBox.right,
+                                   rcBBox.top);
+          }
+        }
+      } else {
+        rcLabel = rcBBox;
+      }
+      break;
+    case ButtonStyle::kIconBottomLabelTop:
+      if (pIconStream) {
+        if (IsFloatZero(fFontSize)) {
+          fHeight = rcBBox.top - rcBBox.bottom;
+          rcLabel =
+              CFX_FloatRect(rcBBox.left, rcBBox.top - fHeight * fAutoFontScale,
+                            rcBBox.right, rcBBox.top);
+          rcIcon = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcBBox.right,
+                                 rcLabel.bottom);
+        } else {
+          fHeight = rcLabelContent.Height();
+
+          if (rcBBox.bottom + fHeight > rcBBox.top) {
+            rcLabel = rcBBox;
+          } else {
+            rcLabel = CFX_FloatRect(rcBBox.left, rcBBox.top - fHeight,
+                                    rcBBox.right, rcBBox.top);
+            rcIcon = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcBBox.right,
+                                   rcLabel.bottom);
+          }
+        }
+      } else {
+        rcLabel = rcBBox;
+      }
+      break;
+    case ButtonStyle::kIconLeftLabelRight:
+      if (pIconStream) {
+        if (IsFloatZero(fFontSize)) {
+          fWidth = rcBBox.right - rcBBox.left;
+          if (rcLabelContent.Width() < fWidth * fAutoFontScale) {
+            rcLabel = CFX_FloatRect(rcBBox.right - fWidth * fAutoFontScale,
+                                    rcBBox.bottom, rcBBox.right, rcBBox.top);
+            rcIcon = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcLabel.left,
+                                   rcBBox.top);
+          } else {
+            if (rcLabelContent.Width() < fWidth) {
+              rcLabel = CFX_FloatRect(rcBBox.right - rcLabelContent.Width(),
+                                      rcBBox.bottom, rcBBox.right, rcBBox.top);
+              rcIcon = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcLabel.left,
+                                     rcBBox.top);
+            } else {
+              rcLabel = rcBBox;
+            }
+          }
+        } else {
+          fWidth = rcLabelContent.Width();
+          if (rcBBox.left + fWidth > rcBBox.right) {
+            rcLabel = rcBBox;
+          } else {
+            rcLabel = CFX_FloatRect(rcBBox.right - fWidth, rcBBox.bottom,
+                                    rcBBox.right, rcBBox.top);
+            rcIcon = CFX_FloatRect(rcBBox.left, rcBBox.bottom, rcLabel.left,
+                                   rcBBox.top);
+          }
+        }
+      } else {
+        rcLabel = rcBBox;
+      }
+      break;
+    case ButtonStyle::kIconRightLabelLeft:
+      if (pIconStream) {
+        if (IsFloatZero(fFontSize)) {
+          fWidth = rcBBox.right - rcBBox.left;
+          if (rcLabelContent.Width() < fWidth * fAutoFontScale) {
+            rcLabel = CFX_FloatRect(rcBBox.left, rcBBox.bottom,
+                                    rcBBox.left + fWidth * fAutoFontScale,
+                                    rcBBox.top);
+            rcIcon = CFX_FloatRect(rcLabel.right, rcBBox.bottom, rcBBox.right,
+                                   rcBBox.top);
+          } else {
+            if (rcLabelContent.Width() < fWidth) {
+              rcLabel = CFX_FloatRect(rcBBox.left, rcBBox.bottom,
+                                      rcBBox.left + rcLabelContent.Width(),
+                                      rcBBox.top);
+              rcIcon = CFX_FloatRect(rcLabel.right, rcBBox.bottom, rcBBox.right,
+                                     rcBBox.top);
+            } else {
+              rcLabel = rcBBox;
+            }
+          }
+        } else {
+          fWidth = rcLabelContent.Width();
+          if (rcBBox.left + fWidth > rcBBox.right) {
+            rcLabel = rcBBox;
+          } else {
+            rcLabel = CFX_FloatRect(rcBBox.left, rcBBox.bottom,
+                                    rcBBox.left + fWidth, rcBBox.top);
+            rcIcon = CFX_FloatRect(rcLabel.right, rcBBox.bottom, rcBBox.right,
+                                   rcBBox.top);
+          }
+        }
+      } else {
+        rcLabel = rcBBox;
+      }
+      break;
+    case ButtonStyle::kLabelOverIcon:
+      rcLabel = rcBBox;
+      rcIcon = rcBBox;
+      break;
+  }
+
+  std::ostringstream sTemp;
+  sTemp << GenerateIconAppStream(IconFit, pIconStream, rcIcon);
+
+  if (!rcLabel.IsEmpty()) {
+    pEdit->SetPlateRect(rcLabel);
+    CFX_ByteString sEdit =
+        GetEditAppStream(pEdit.get(), CFX_PointF(0.0f, 0.0f), true, 0);
+    if (sEdit.GetLength() > 0) {
+      AutoClosedCommand bt(&sTemp, kTextBeginOperator, kTextEndOperator);
+      sTemp << GetColorAppStream(crText, true) << sEdit;
+    }
+  }
+
+  if (sTemp.tellp() <= 0)
+    return CFX_ByteString();
+
+  std::ostringstream sAppStream;
+  {
+    AutoClosedQCommand q(&sAppStream);
+    sAppStream << rcBBox.left << " " << rcBBox.bottom << " "
+               << rcBBox.right - rcBBox.left << " "
+               << rcBBox.top - rcBBox.bottom << " " << kAppendRectOperator
+               << " " << kSetNonZeroWindingClipOperator << " "
+               << kEndPathNoFillOrStrokeOperator << "\n";
+    sAppStream << sTemp.str().c_str();
+  }
+  return CFX_ByteString(sAppStream);
+}
+
+CFX_ByteString GetBorderAppStreamInternal(const CFX_FloatRect& rect,
+                                          float fWidth,
+                                          const CFX_Color& color,
+                                          const CFX_Color& crLeftTop,
+                                          const CFX_Color& crRightBottom,
+                                          BorderStyle nStyle,
+                                          const CPWL_Dash& dash) {
+  std::ostringstream sAppStream;
+  CFX_ByteString sColor;
+
+  float fLeft = rect.left;
+  float fRight = rect.right;
+  float fTop = rect.top;
+  float fBottom = rect.bottom;
+
+  if (fWidth > 0.0f) {
+    float fHalfWidth = fWidth / 2.0f;
+    AutoClosedQCommand q(&sAppStream);
+
+    switch (nStyle) {
+      default:
+      case BorderStyle::SOLID:
+        sColor = GetColorAppStream(color, true);
+        if (sColor.GetLength() > 0) {
+          sAppStream << sColor;
+          sAppStream << fLeft << " " << fBottom << " " << fRight - fLeft << " "
+                     << fTop - fBottom << " " << kAppendRectOperator << "\n";
+          sAppStream << fLeft + fWidth << " " << fBottom + fWidth << " "
+                     << fRight - fLeft - fWidth * 2 << " "
+                     << fTop - fBottom - fWidth * 2 << " "
+                     << kAppendRectOperator << "\n";
+          sAppStream << kFillEvenOddOperator << "\n";
+        }
+        break;
+      case BorderStyle::DASH:
+        sColor = GetColorAppStream(color, false);
+        if (sColor.GetLength() > 0) {
+          sAppStream << sColor;
+          sAppStream << fWidth << " " << kSetLineWidthOperator << " ["
+                     << dash.nDash << " " << dash.nGap << "] " << dash.nPhase
+                     << " " << kSetDashOperator << "\n";
+          sAppStream << fLeft + fWidth / 2 << " " << fBottom + fWidth / 2 << " "
+                     << kMoveToOperator << "\n";
+          sAppStream << fLeft + fWidth / 2 << " " << fTop - fWidth / 2 << " "
+                     << kLineToOperator << "\n";
+          sAppStream << fRight - fWidth / 2 << " " << fTop - fWidth / 2 << " "
+                     << kLineToOperator << "\n";
+          sAppStream << fRight - fWidth / 2 << " " << fBottom + fWidth / 2
+                     << " " << kLineToOperator << "\n";
+          sAppStream << fLeft + fWidth / 2 << " " << fBottom + fWidth / 2 << " "
+                     << kLineToOperator << " " << kStrokeOperator << "\n";
+        }
+        break;
+      case BorderStyle::BEVELED:
+      case BorderStyle::INSET:
+        sColor = GetColorAppStream(crLeftTop, true);
+        if (sColor.GetLength() > 0) {
+          sAppStream << sColor;
+          sAppStream << fLeft + fHalfWidth << " " << fBottom + fHalfWidth << " "
+                     << kMoveToOperator << "\n";
+          sAppStream << fLeft + fHalfWidth << " " << fTop - fHalfWidth << " "
+                     << kLineToOperator << "\n";
+          sAppStream << fRight - fHalfWidth << " " << fTop - fHalfWidth << " "
+                     << kLineToOperator << "\n";
+          sAppStream << fRight - fHalfWidth * 2 << " " << fTop - fHalfWidth * 2
+                     << " " << kLineToOperator << "\n";
+          sAppStream << fLeft + fHalfWidth * 2 << " " << fTop - fHalfWidth * 2
+                     << " " << kLineToOperator << "\n";
+          sAppStream << fLeft + fHalfWidth * 2 << " "
+                     << fBottom + fHalfWidth * 2 << " " << kLineToOperator
+                     << " " << kFillOperator << "\n";
+        }
+
+        sColor = GetColorAppStream(crRightBottom, true);
+        if (sColor.GetLength() > 0) {
+          sAppStream << sColor;
+          sAppStream << fRight - fHalfWidth << " " << fTop - fHalfWidth << " "
+                     << kMoveToOperator << "\n";
+          sAppStream << fRight - fHalfWidth << " " << fBottom + fHalfWidth
+                     << " " << kLineToOperator << "\n";
+          sAppStream << fLeft + fHalfWidth << " " << fBottom + fHalfWidth << " "
+                     << kLineToOperator << "\n";
+          sAppStream << fLeft + fHalfWidth * 2 << " "
+                     << fBottom + fHalfWidth * 2 << " " << kLineToOperator
+                     << "\n";
+          sAppStream << fRight - fHalfWidth * 2 << " "
+                     << fBottom + fHalfWidth * 2 << " " << kLineToOperator
+                     << "\n";
+          sAppStream << fRight - fHalfWidth * 2 << " " << fTop - fHalfWidth * 2
+                     << " " << kLineToOperator << " " << kFillOperator << "\n";
+        }
+
+        sColor = GetColorAppStream(color, true);
+        if (sColor.GetLength() > 0) {
+          sAppStream << sColor;
+          sAppStream << fLeft << " " << fBottom << " " << fRight - fLeft << " "
+                     << fTop - fBottom << " " << kAppendRectOperator << "\n";
+          sAppStream << fLeft + fHalfWidth << " " << fBottom + fHalfWidth << " "
+                     << fRight - fLeft - fHalfWidth * 2 << " "
+                     << fTop - fBottom - fHalfWidth * 2 << " "
+                     << kAppendRectOperator << " " << kFillEvenOddOperator
+                     << "\n";
+        }
+        break;
+      case BorderStyle::UNDERLINE:
+        sColor = GetColorAppStream(color, false);
+        if (sColor.GetLength() > 0) {
+          sAppStream << sColor;
+          sAppStream << fWidth << " " << kSetLineWidthOperator << "\n";
+          sAppStream << fLeft << " " << fBottom + fWidth / 2 << " "
+                     << kMoveToOperator << "\n";
+          sAppStream << fRight << " " << fBottom + fWidth / 2 << " "
+                     << kLineToOperator << " " << kStrokeOperator << "\n";
+        }
+        break;
+    }
+  }
+
+  return CFX_ByteString(sAppStream);
+}
+
+CFX_ByteString GetDropButtonAppStream(const CFX_FloatRect& rcBBox) {
+  if (rcBBox.IsEmpty())
+    return CFX_ByteString();
+
+  std::ostringstream sAppStream;
+  {
+    AutoClosedQCommand q(&sAppStream);
+    sAppStream << GetColorAppStream(CFX_Color(COLORTYPE_RGB, 220.0f / 255.0f,
+                                              220.0f / 255.0f, 220.0f / 255.0f),
+                                    true)
+               << rcBBox.left << " " << rcBBox.bottom << " "
+               << rcBBox.right - rcBBox.left << " "
+               << rcBBox.top - rcBBox.bottom << " " << kAppendRectOperator
+               << " " << kFillOperator << "\n";
+  }
+
+  {
+    AutoClosedQCommand q(&sAppStream);
+    sAppStream << GetBorderAppStreamInternal(
+        rcBBox, 2, CFX_Color(COLORTYPE_GRAY, 0), CFX_Color(COLORTYPE_GRAY, 1),
+        CFX_Color(COLORTYPE_GRAY, 0.5), BorderStyle::BEVELED,
+        CPWL_Dash(3, 0, 0));
+  }
+
+  CFX_PointF ptCenter = CFX_PointF((rcBBox.left + rcBBox.right) / 2,
+                                   (rcBBox.top + rcBBox.bottom) / 2);
+  if (IsFloatBigger(rcBBox.right - rcBBox.left, 6) &&
+      IsFloatBigger(rcBBox.top - rcBBox.bottom, 6)) {
+    AutoClosedQCommand q(&sAppStream);
+    sAppStream << " 0 " << kSetGrayOperator << "\n"
+               << ptCenter.x - 3 << " " << ptCenter.y + 1.5f << " "
+               << kMoveToOperator << "\n"
+               << ptCenter.x + 3 << " " << ptCenter.y + 1.5f << " "
+               << kLineToOperator << "\n"
+               << ptCenter.x << " " << ptCenter.y - 1.5f << " "
+               << kLineToOperator << "\n"
+               << ptCenter.x - 3 << " " << ptCenter.y + 1.5f << " "
+               << kLineToOperator << " " << kFillOperator << "\n";
+  }
+
+  return CFX_ByteString(sAppStream);
+}
+
+CFX_ByteString GetRectFillAppStream(const CFX_FloatRect& rect,
+                                    const CFX_Color& color) {
+  std::ostringstream sAppStream;
+  CFX_ByteString sColor = GetColorAppStream(color, true);
+  if (sColor.GetLength() > 0) {
+    AutoClosedQCommand q(&sAppStream);
+    sAppStream << sColor << rect.left << " " << rect.bottom << " "
+               << rect.right - rect.left << " " << rect.top - rect.bottom << " "
+               << kAppendRectOperator << " " << kFillOperator << "\n";
+  }
+
+  return CFX_ByteString(sAppStream);
+}
+
+}  // namespace
+
+CPWL_AppStream::CPWL_AppStream(CPDFSDK_Widget* widget, CPDF_Dictionary* dict)
+    : widget_(widget), dict_(dict) {}
+
+CPWL_AppStream::~CPWL_AppStream() {}
+
+void CPWL_AppStream::SetAsPushButton() {
+  CPDF_FormControl* pControl = widget_->GetFormControl();
+  CFX_FloatRect rcWindow = widget_->GetRotatedRect();
+  ButtonStyle nLayout = ButtonStyle::kLabel;
+  switch (pControl->GetTextPosition()) {
+    case TEXTPOS_ICON:
+      nLayout = ButtonStyle::kIcon;
+      break;
+    case TEXTPOS_BELOW:
+      nLayout = ButtonStyle::kIconTopLabelBottom;
+      break;
+    case TEXTPOS_ABOVE:
+      nLayout = ButtonStyle::kIconBottomLabelTop;
+      break;
+    case TEXTPOS_RIGHT:
+      nLayout = ButtonStyle::kIconLeftLabelRight;
+      break;
+    case TEXTPOS_LEFT:
+      nLayout = ButtonStyle::kIconRightLabelLeft;
+      break;
+    case TEXTPOS_OVERLAID:
+      nLayout = ButtonStyle::kLabelOverIcon;
+      break;
+    default:
+      nLayout = ButtonStyle::kLabel;
+      break;
+  }
+
+  CFX_Color crBackground;
+  CFX_Color crBorder;
+  int iColorType;
+  float fc[4];
+  pControl->GetOriginalBackgroundColor(iColorType, fc);
+  if (iColorType > 0)
+    crBackground = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+
+  pControl->GetOriginalBorderColor(iColorType, fc);
+  if (iColorType > 0)
+    crBorder = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+
+  float fBorderWidth = static_cast<float>(widget_->GetBorderWidth());
+  CPWL_Dash dsBorder(3, 0, 0);
+  CFX_Color crLeftTop;
+  CFX_Color crRightBottom;
+
+  BorderStyle nBorderStyle = widget_->GetBorderStyle();
+  switch (nBorderStyle) {
+    case BorderStyle::DASH:
+      dsBorder = CPWL_Dash(3, 3, 0);
+      break;
+    case BorderStyle::BEVELED:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 1);
+      crRightBottom = crBackground / 2.0f;
+      break;
+    case BorderStyle::INSET:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0.5);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 0.75);
+      break;
+    default:
+      break;
+  }
+
+  CFX_FloatRect rcClient = rcWindow.GetDeflated(fBorderWidth, fBorderWidth);
+  CFX_Color crText(COLORTYPE_GRAY, 0);
+  CFX_ByteString csNameTag;
+  CPDF_DefaultAppearance da = pControl->GetDefaultAppearance();
+  if (da.HasColor()) {
+    da.GetColor(iColorType, fc);
+    crText = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+  }
+  float fFontSize = 12.0f;
+  if (da.HasFont())
+    csNameTag = da.GetFont(&fFontSize);
+
+  CFX_WideString csWCaption;
+  CFX_WideString csNormalCaption;
+  CFX_WideString csRolloverCaption;
+  CFX_WideString csDownCaption;
+  if (pControl->HasMKEntry("CA"))
+    csNormalCaption = pControl->GetNormalCaption();
+
+  if (pControl->HasMKEntry("RC"))
+    csRolloverCaption = pControl->GetRolloverCaption();
+
+  if (pControl->HasMKEntry("AC"))
+    csDownCaption = pControl->GetDownCaption();
+
+  CPDF_Stream* pNormalIcon = nullptr;
+  CPDF_Stream* pRolloverIcon = nullptr;
+  CPDF_Stream* pDownIcon = nullptr;
+  if (pControl->HasMKEntry("I"))
+    pNormalIcon = pControl->GetNormalIcon();
+
+  if (pControl->HasMKEntry("RI"))
+    pRolloverIcon = pControl->GetRolloverIcon();
+
+  if (pControl->HasMKEntry("IX"))
+    pDownIcon = pControl->GetDownIcon();
+
+  if (pNormalIcon) {
+    if (CPDF_Dictionary* pImageDict = pNormalIcon->GetDict()) {
+      if (pImageDict->GetStringFor("Name").IsEmpty())
+        pImageDict->SetNewFor<CPDF_String>("Name", "ImgA", false);
+    }
+  }
+
+  if (pRolloverIcon) {
+    if (CPDF_Dictionary* pImageDict = pRolloverIcon->GetDict()) {
+      if (pImageDict->GetStringFor("Name").IsEmpty())
+        pImageDict->SetNewFor<CPDF_String>("Name", "ImgB", false);
+    }
+  }
+
+  if (pDownIcon) {
+    if (CPDF_Dictionary* pImageDict = pDownIcon->GetDict()) {
+      if (pImageDict->GetStringFor("Name").IsEmpty())
+        pImageDict->SetNewFor<CPDF_String>("Name", "ImgC", false);
+    }
+  }
+
+  CPDF_IconFit iconFit = pControl->GetIconFit();
+
+  CBA_FontMap font_map(
+      widget_.Get(),
+      widget_->GetInterForm()->GetFormFillEnv()->GetSysHandler());
+  font_map.SetAPType("N");
+
+  CFX_ByteString csAP =
+      GetRectFillAppStream(rcWindow, crBackground) +
+      GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                 crRightBottom, nBorderStyle, dsBorder) +
+      GetPushButtonAppStream(iconFit.GetFittingBounds() ? rcWindow : rcClient,
+                             &font_map, pNormalIcon, iconFit, csNormalCaption,
+                             crText, fFontSize, nLayout);
+
+  Write("N", csAP, "");
+  if (pNormalIcon)
+    AddImage("N", pNormalIcon);
+
+  CPDF_FormControl::HighlightingMode eHLM = pControl->GetHighlightingMode();
+  if (eHLM == CPDF_FormControl::Push || eHLM == CPDF_FormControl::Toggle) {
+    if (csRolloverCaption.IsEmpty() && !pRolloverIcon) {
+      csRolloverCaption = csNormalCaption;
+      pRolloverIcon = pNormalIcon;
+    }
+
+    font_map.SetAPType("R");
+
+    csAP =
+        GetRectFillAppStream(rcWindow, crBackground) +
+        GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                   crRightBottom, nBorderStyle, dsBorder) +
+        GetPushButtonAppStream(iconFit.GetFittingBounds() ? rcWindow : rcClient,
+                               &font_map, pRolloverIcon, iconFit,
+                               csRolloverCaption, crText, fFontSize, nLayout);
+
+    Write("R", csAP, "");
+    if (pRolloverIcon)
+      AddImage("R", pRolloverIcon);
+
+    if (csDownCaption.IsEmpty() && !pDownIcon) {
+      csDownCaption = csNormalCaption;
+      pDownIcon = pNormalIcon;
+    }
+
+    switch (nBorderStyle) {
+      case BorderStyle::BEVELED: {
+        CFX_Color crTemp = crLeftTop;
+        crLeftTop = crRightBottom;
+        crRightBottom = crTemp;
+        break;
+      }
+      case BorderStyle::INSET: {
+        crLeftTop = CFX_Color(COLORTYPE_GRAY, 0);
+        crRightBottom = CFX_Color(COLORTYPE_GRAY, 1);
+        break;
+      }
+      default:
+        break;
+    }
+
+    font_map.SetAPType("D");
+
+    csAP =
+        GetRectFillAppStream(rcWindow, crBackground - 0.25f) +
+        GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                   crRightBottom, nBorderStyle, dsBorder) +
+        GetPushButtonAppStream(iconFit.GetFittingBounds() ? rcWindow : rcClient,
+                               &font_map, pDownIcon, iconFit, csDownCaption,
+                               crText, fFontSize, nLayout);
+
+    Write("D", csAP, "");
+    if (pDownIcon)
+      AddImage("D", pDownIcon);
+  } else {
+    Remove("D");
+    Remove("R");
+  }
+}
+
+void CPWL_AppStream::SetAsCheckBox() {
+  CPDF_FormControl* pControl = widget_->GetFormControl();
+  CFX_Color crBackground, crBorder, crText;
+  int iColorType;
+  float fc[4];
+
+  pControl->GetOriginalBackgroundColor(iColorType, fc);
+  if (iColorType > 0)
+    crBackground = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+
+  pControl->GetOriginalBorderColor(iColorType, fc);
+  if (iColorType > 0)
+    crBorder = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+
+  float fBorderWidth = static_cast<float>(widget_->GetBorderWidth());
+  CPWL_Dash dsBorder(3, 0, 0);
+  CFX_Color crLeftTop, crRightBottom;
+
+  BorderStyle nBorderStyle = widget_->GetBorderStyle();
+  switch (nBorderStyle) {
+    case BorderStyle::DASH:
+      dsBorder = CPWL_Dash(3, 3, 0);
+      break;
+    case BorderStyle::BEVELED:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 1);
+      crRightBottom = crBackground / 2.0f;
+      break;
+    case BorderStyle::INSET:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0.5);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 0.75);
+      break;
+    default:
+      break;
+  }
+
+  CFX_FloatRect rcWindow = widget_->GetRotatedRect();
+  CFX_FloatRect rcClient = rcWindow.GetDeflated(fBorderWidth, fBorderWidth);
+  CPDF_DefaultAppearance da = pControl->GetDefaultAppearance();
+  if (da.HasColor()) {
+    da.GetColor(iColorType, fc);
+    crText = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+  }
+
+  CheckStyle nStyle = CheckStyle::kCheck;
+  CFX_WideString csWCaption = pControl->GetNormalCaption();
+  if (csWCaption.GetLength() > 0) {
+    switch (csWCaption[0]) {
+      case L'l':
+        nStyle = CheckStyle::kCircle;
+        break;
+      case L'8':
+        nStyle = CheckStyle::kCross;
+        break;
+      case L'u':
+        nStyle = CheckStyle::kDiamond;
+        break;
+      case L'n':
+        nStyle = CheckStyle::kSquare;
+        break;
+      case L'H':
+        nStyle = CheckStyle::kStar;
+        break;
+      case L'4':
+      default:
+        nStyle = CheckStyle::kCheck;
+    }
+  }
+
+  CFX_ByteString csAP_N_ON =
+      GetRectFillAppStream(rcWindow, crBackground) +
+      GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                 crRightBottom, nBorderStyle, dsBorder);
+
+  CFX_ByteString csAP_N_OFF = csAP_N_ON;
+
+  switch (nBorderStyle) {
+    case BorderStyle::BEVELED: {
+      CFX_Color crTemp = crLeftTop;
+      crLeftTop = crRightBottom;
+      crRightBottom = crTemp;
+      break;
+    }
+    case BorderStyle::INSET: {
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 1);
+      break;
+    }
+    default:
+      break;
+  }
+
+  CFX_ByteString csAP_D_ON =
+      GetRectFillAppStream(rcWindow, crBackground - 0.25f) +
+      GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                 crRightBottom, nBorderStyle, dsBorder);
+
+  CFX_ByteString csAP_D_OFF = csAP_D_ON;
+
+  csAP_N_ON += GetCheckBoxAppStream(rcClient, nStyle, crText);
+  csAP_D_ON += GetCheckBoxAppStream(rcClient, nStyle, crText);
+
+  Write("N", csAP_N_ON, pControl->GetCheckedAPState());
+  Write("N", csAP_N_OFF, "Off");
+
+  Write("D", csAP_D_ON, pControl->GetCheckedAPState());
+  Write("D", csAP_D_OFF, "Off");
+
+  CFX_ByteString csAS = widget_->GetAppState();
+  if (csAS.IsEmpty())
+    widget_->SetAppState("Off");
+}
+
+void CPWL_AppStream::SetAsRadioButton() {
+  CPDF_FormControl* pControl = widget_->GetFormControl();
+  CFX_Color crBackground;
+  CFX_Color crBorder;
+  CFX_Color crText;
+  int iColorType;
+  float fc[4];
+
+  pControl->GetOriginalBackgroundColor(iColorType, fc);
+  if (iColorType > 0)
+    crBackground = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+
+  pControl->GetOriginalBorderColor(iColorType, fc);
+  if (iColorType > 0)
+    crBorder = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+
+  float fBorderWidth = static_cast<float>(widget_->GetBorderWidth());
+  CPWL_Dash dsBorder(3, 0, 0);
+  CFX_Color crLeftTop;
+  CFX_Color crRightBottom;
+  BorderStyle nBorderStyle = widget_->GetBorderStyle();
+  switch (nBorderStyle) {
+    case BorderStyle::DASH:
+      dsBorder = CPWL_Dash(3, 3, 0);
+      break;
+    case BorderStyle::BEVELED:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 1);
+      crRightBottom = crBackground / 2.0f;
+      break;
+    case BorderStyle::INSET:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0.5);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 0.75);
+      break;
+    default:
+      break;
+  }
+
+  CFX_FloatRect rcWindow = widget_->GetRotatedRect();
+  CFX_FloatRect rcClient = rcWindow.GetDeflated(fBorderWidth, fBorderWidth);
+  CPDF_DefaultAppearance da = pControl->GetDefaultAppearance();
+  if (da.HasColor()) {
+    da.GetColor(iColorType, fc);
+    crText = CFX_Color(iColorType, fc[0], fc[1], fc[2], fc[3]);
+  }
+
+  CheckStyle nStyle = CheckStyle::kCircle;
+  CFX_WideString csWCaption = pControl->GetNormalCaption();
+  if (csWCaption.GetLength() > 0) {
+    switch (csWCaption[0]) {
+      case L'8':
+        nStyle = CheckStyle::kCross;
+        break;
+      case L'u':
+        nStyle = CheckStyle::kDiamond;
+        break;
+      case L'n':
+        nStyle = CheckStyle::kSquare;
+        break;
+      case L'H':
+        nStyle = CheckStyle::kStar;
+        break;
+      case L'4':
+        nStyle = CheckStyle::kCheck;
+        break;
+      case L'l':
+      default:
+        nStyle = CheckStyle::kCircle;
+    }
+  }
+
+  CFX_ByteString csAP_N_ON;
+  CFX_FloatRect rcCenter = rcWindow.GetCenterSquare().GetDeflated(1.0f, 1.0f);
+  if (nStyle == CheckStyle::kCircle) {
+    if (nBorderStyle == BorderStyle::BEVELED) {
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 1);
+      crRightBottom = crBackground - 0.25f;
+    } else if (nBorderStyle == BorderStyle::INSET) {
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0.5f);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 0.75f);
+    }
+
+    csAP_N_ON =
+        GetCircleFillAppStream(rcCenter, crBackground) +
+        GetCircleBorderAppStream(rcCenter, fBorderWidth, crBorder, crLeftTop,
+                                 crRightBottom, nBorderStyle, dsBorder);
+  } else {
+    csAP_N_ON =
+        GetRectFillAppStream(rcWindow, crBackground) +
+        GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                   crRightBottom, nBorderStyle, dsBorder);
+  }
+
+  CFX_ByteString csAP_N_OFF = csAP_N_ON;
+
+  switch (nBorderStyle) {
+    case BorderStyle::BEVELED: {
+      CFX_Color crTemp = crLeftTop;
+      crLeftTop = crRightBottom;
+      crRightBottom = crTemp;
+      break;
+    }
+    case BorderStyle::INSET: {
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 1);
+      break;
+    }
+    default:
+      break;
+  }
+
+  CFX_ByteString csAP_D_ON;
+
+  if (nStyle == CheckStyle::kCircle) {
+    CFX_Color crBK = crBackground - 0.25f;
+    if (nBorderStyle == BorderStyle::BEVELED) {
+      crLeftTop = crBackground - 0.25f;
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 1);
+      crBK = crBackground;
+    } else if (nBorderStyle == BorderStyle::INSET) {
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 1);
+    }
+
+    csAP_D_ON =
+        GetCircleFillAppStream(rcCenter, crBK) +
+        GetCircleBorderAppStream(rcCenter, fBorderWidth, crBorder, crLeftTop,
+                                 crRightBottom, nBorderStyle, dsBorder);
+  } else {
+    csAP_D_ON =
+        GetRectFillAppStream(rcWindow, crBackground - 0.25f) +
+        GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                   crRightBottom, nBorderStyle, dsBorder);
+  }
+
+  CFX_ByteString csAP_D_OFF = csAP_D_ON;
+
+  csAP_N_ON += GetRadioButtonAppStream(rcClient, nStyle, crText);
+  csAP_D_ON += GetRadioButtonAppStream(rcClient, nStyle, crText);
+
+  Write("N", csAP_N_ON, pControl->GetCheckedAPState());
+  Write("N", csAP_N_OFF, "Off");
+
+  Write("D", csAP_D_ON, pControl->GetCheckedAPState());
+  Write("D", csAP_D_OFF, "Off");
+
+  CFX_ByteString csAS = widget_->GetAppState();
+  if (csAS.IsEmpty())
+    widget_->SetAppState("Off");
+}
+
+void CPWL_AppStream::SetAsComboBox(const CFX_WideString* sValue) {
+  CPDF_FormControl* pControl = widget_->GetFormControl();
+  CPDF_FormField* pField = pControl->GetField();
+  std::ostringstream sBody;
+
+  CFX_FloatRect rcClient = widget_->GetClientRect();
+  CFX_FloatRect rcButton = rcClient;
+  rcButton.left = rcButton.right - 13;
+  rcButton.Normalize();
+
+  auto pEdit = pdfium::MakeUnique<CPWL_EditImpl>();
+  pEdit->EnableRefresh(false);
+
+  CBA_FontMap font_map(
+      widget_.Get(),
+      widget_->GetInterForm()->GetFormFillEnv()->GetSysHandler());
+  pEdit->SetFontMap(&font_map);
+
+  CFX_FloatRect rcEdit = rcClient;
+  rcEdit.right = rcButton.left;
+  rcEdit.Normalize();
+
+  pEdit->SetPlateRect(rcEdit);
+  pEdit->SetAlignmentV(1, true);
+
+  float fFontSize = widget_->GetFontSize();
+  if (IsFloatZero(fFontSize))
+    pEdit->SetAutoFontSize(true, true);
+  else
+    pEdit->SetFontSize(fFontSize);
+
+  pEdit->Initialize();
+
+  if (sValue) {
+    pEdit->SetText(*sValue);
+  } else {
+    int32_t nCurSel = pField->GetSelectedIndex(0);
+    if (nCurSel < 0)
+      pEdit->SetText(pField->GetValue());
+    else
+      pEdit->SetText(pField->GetOptionLabel(nCurSel));
+  }
+
+  CFX_FloatRect rcContent = pEdit->GetContentRect();
+  CFX_ByteString sEdit = GetEditAppStream(pEdit.get(), CFX_PointF(), true, 0);
+  if (sEdit.GetLength() > 0) {
+    sBody << "/Tx ";
+    AutoClosedCommand bmc(&sBody, kMarkedSequenceBeginOperator,
+                          kMarkedSequenceEndOperator);
+    AutoClosedQCommand q(&sBody);
+
+    if (rcContent.Width() > rcEdit.Width() ||
+        rcContent.Height() > rcEdit.Height()) {
+      sBody << rcEdit.left << " " << rcEdit.bottom << " " << rcEdit.Width()
+            << " " << rcEdit.Height() << " " << kAppendRectOperator << "\n"
+            << kSetNonZeroWindingClipOperator << "\n"
+            << kEndPathNoFillOrStrokeOperator << "\n";
+    }
+
+    CFX_Color crText = widget_->GetTextPWLColor();
+    AutoClosedCommand bt(&sBody, kTextBeginOperator, kTextEndOperator);
+    sBody << GetColorAppStream(crText, true) << sEdit;
+  }
+
+  sBody << GetDropButtonAppStream(rcButton);
+  Write("N",
+        GetBackgroundAppStream() + GetBorderAppStream() + CFX_ByteString(sBody),
+        "");
+}
+
+void CPWL_AppStream::SetAsListBox() {
+  CPDF_FormControl* pControl = widget_->GetFormControl();
+  CPDF_FormField* pField = pControl->GetField();
+  CFX_FloatRect rcClient = widget_->GetClientRect();
+  std::ostringstream sBody;
+
+  auto pEdit = pdfium::MakeUnique<CPWL_EditImpl>();
+  pEdit->EnableRefresh(false);
+
+  CBA_FontMap font_map(
+      widget_.Get(),
+      widget_->GetInterForm()->GetFormFillEnv()->GetSysHandler());
+  pEdit->SetFontMap(&font_map);
+  pEdit->SetPlateRect(CFX_FloatRect(rcClient.left, 0.0f, rcClient.right, 0.0f));
+
+  float fFontSize = widget_->GetFontSize();
+  pEdit->SetFontSize(IsFloatZero(fFontSize) ? 12.0f : fFontSize);
+  pEdit->Initialize();
+
+  std::ostringstream sList;
+  float fy = rcClient.top;
+
+  int32_t nTop = pField->GetTopVisibleIndex();
+  int32_t nCount = pField->CountOptions();
+  int32_t nSelCount = pField->CountSelectedItems();
+
+  for (int32_t i = nTop; i < nCount; ++i) {
+    bool bSelected = false;
+    for (int32_t j = 0; j < nSelCount; ++j) {
+      if (pField->GetSelectedIndex(j) == i) {
+        bSelected = true;
+        break;
+      }
+    }
+
+    pEdit->SetText(pField->GetOptionLabel(i));
+
+    CFX_FloatRect rcContent = pEdit->GetContentRect();
+    float fItemHeight = rcContent.Height();
+
+    if (bSelected) {
+      CFX_FloatRect rcItem =
+          CFX_FloatRect(rcClient.left, fy - fItemHeight, rcClient.right, fy);
+      {
+        AutoClosedQCommand q(&sList);
+        sList << GetColorAppStream(CFX_Color(COLORTYPE_RGB, 0, 51.0f / 255.0f,
+                                             113.0f / 255.0f),
+                                   true)
+              << rcItem.left << " " << rcItem.bottom << " " << rcItem.Width()
+              << " " << rcItem.Height() << " " << kAppendRectOperator << " "
+              << kFillOperator << "\n";
+      }
+
+      AutoClosedCommand bt(&sList, kTextBeginOperator, kTextEndOperator);
+      sList << GetColorAppStream(CFX_Color(COLORTYPE_GRAY, 1), true)
+            << GetEditAppStream(pEdit.get(), CFX_PointF(0.0f, fy), true, 0);
+    } else {
+      CFX_Color crText = widget_->GetTextPWLColor();
+
+      AutoClosedCommand bt(&sList, kTextBeginOperator, kTextEndOperator);
+      sList << GetColorAppStream(crText, true)
+            << GetEditAppStream(pEdit.get(), CFX_PointF(0.0f, fy), true, 0);
+    }
+
+    fy -= fItemHeight;
+  }
+
+  if (sList.tellp() > 0) {
+    sBody << "/Tx ";
+    AutoClosedCommand bmc(&sBody, kMarkedSequenceBeginOperator,
+                          kMarkedSequenceEndOperator);
+    AutoClosedQCommand q(&sBody);
+
+    sBody << rcClient.left << " " << rcClient.bottom << " " << rcClient.Width()
+          << " " << rcClient.Height() << " " << kAppendRectOperator << "\n"
+          << kSetNonZeroWindingClipOperator << "\n"
+          << kEndPathNoFillOrStrokeOperator << "\n"
+          << sList.str();
+  }
+  Write("N",
+        GetBackgroundAppStream() + GetBorderAppStream() + CFX_ByteString(sBody),
+        "");
+}
+
+void CPWL_AppStream::SetAsTextField(const CFX_WideString* sValue) {
+  CPDF_FormControl* pControl = widget_->GetFormControl();
+  CPDF_FormField* pField = pControl->GetField();
+  std::ostringstream sBody;
+  std::ostringstream sLines;
+
+  auto pEdit = pdfium::MakeUnique<CPWL_EditImpl>();
+  pEdit->EnableRefresh(false);
+
+  CBA_FontMap font_map(
+      widget_.Get(),
+      widget_->GetInterForm()->GetFormFillEnv()->GetSysHandler());
+  pEdit->SetFontMap(&font_map);
+
+  CFX_FloatRect rcClient = widget_->GetClientRect();
+  pEdit->SetPlateRect(rcClient);
+  pEdit->SetAlignmentH(pControl->GetControlAlignment(), true);
+
+  uint32_t dwFieldFlags = pField->GetFieldFlags();
+  bool bMultiLine = (dwFieldFlags >> 12) & 1;
+  if (bMultiLine) {
+    pEdit->SetMultiLine(true, true);
+    pEdit->SetAutoReturn(true, true);
+  } else {
+    pEdit->SetAlignmentV(1, true);
+  }
+
+  uint16_t subWord = 0;
+  if ((dwFieldFlags >> 13) & 1) {
+    subWord = '*';
+    pEdit->SetPasswordChar(subWord, true);
+  }
+
+  int nMaxLen = pField->GetMaxLen();
+  bool bCharArray = (dwFieldFlags >> 24) & 1;
+  float fFontSize = widget_->GetFontSize();
+
+#ifdef PDF_ENABLE_XFA
+  CFX_WideString sValueTmp;
+  if (!sValue && widget_->GetMixXFAWidget()) {
+    sValueTmp = widget_->GetValue(true);
+    sValue = &sValueTmp;
+  }
+#endif  // PDF_ENABLE_XFA
+
+  if (nMaxLen > 0) {
+    if (bCharArray) {
+      pEdit->SetCharArray(nMaxLen);
+
+      if (IsFloatZero(fFontSize)) {
+        fFontSize = CPWL_Edit::GetCharArrayAutoFontSize(font_map.GetPDFFont(0),
+                                                        rcClient, nMaxLen);
+      }
+    } else {
+      if (sValue)
+        nMaxLen = sValue->GetLength();
+      pEdit->SetLimitChar(nMaxLen);
+    }
+  }
+
+  if (IsFloatZero(fFontSize))
+    pEdit->SetAutoFontSize(true, true);
+  else
+    pEdit->SetFontSize(fFontSize);
+
+  pEdit->Initialize();
+  pEdit->SetText(sValue ? *sValue : pField->GetValue());
+
+  CFX_FloatRect rcContent = pEdit->GetContentRect();
+  CFX_ByteString sEdit =
+      GetEditAppStream(pEdit.get(), CFX_PointF(), !bCharArray, subWord);
+
+  if (sEdit.GetLength() > 0) {
+    sBody << "/Tx ";
+    AutoClosedCommand bmc(&sBody, kMarkedSequenceBeginOperator,
+                          kMarkedSequenceEndOperator);
+    AutoClosedQCommand q(&sBody);
+
+    if (rcContent.Width() > rcClient.Width() ||
+        rcContent.Height() > rcClient.Height()) {
+      sBody << rcClient.left << " " << rcClient.bottom << " "
+            << rcClient.Width() << " " << rcClient.Height() << " "
+            << kAppendRectOperator << "\n"
+            << kSetNonZeroWindingClipOperator << "\n"
+            << kEndPathNoFillOrStrokeOperator << "\n";
+    }
+    CFX_Color crText = widget_->GetTextPWLColor();
+
+    AutoClosedCommand bt(&sBody, kTextBeginOperator, kTextEndOperator);
+    sBody << GetColorAppStream(crText, true) << sEdit;
+  }
+
+  if (bCharArray) {
+    switch (widget_->GetBorderStyle()) {
+      case BorderStyle::SOLID: {
+        CFX_ByteString sColor =
+            GetColorAppStream(widget_->GetBorderPWLColor(), false);
+        if (sColor.GetLength() > 0) {
+          AutoClosedQCommand q(&sLines);
+          sLines << widget_->GetBorderWidth() << " " << kSetLineWidthOperator
+                 << "\n"
+                 << GetColorAppStream(widget_->GetBorderPWLColor(), false)
+                 << " 2 " << kSetLineCapStyleOperator << " 0 "
+                 << kSetLineJoinStyleOperator << "\n";
+
+          for (int32_t i = 1; i < nMaxLen; ++i) {
+            sLines << rcClient.left +
+                          ((rcClient.right - rcClient.left) / nMaxLen) * i
+                   << " " << rcClient.bottom << " " << kMoveToOperator << "\n"
+                   << rcClient.left +
+                          ((rcClient.right - rcClient.left) / nMaxLen) * i
+                   << " " << rcClient.top << " " << kLineToOperator << " "
+                   << kStrokeOperator << "\n";
+          }
+        }
+        break;
+      }
+      case BorderStyle::DASH: {
+        CFX_ByteString sColor =
+            GetColorAppStream(widget_->GetBorderPWLColor(), false);
+        if (sColor.GetLength() > 0) {
+          CPWL_Dash dsBorder = CPWL_Dash(3, 3, 0);
+          AutoClosedQCommand q(&sLines);
+          sLines << widget_->GetBorderWidth() << " " << kSetLineWidthOperator
+                 << "\n"
+                 << GetColorAppStream(widget_->GetBorderPWLColor(), false)
+                 << "[" << dsBorder.nDash << " " << dsBorder.nGap << "] "
+                 << dsBorder.nPhase << " " << kSetDashOperator << "\n";
+
+          for (int32_t i = 1; i < nMaxLen; ++i) {
+            sLines << rcClient.left +
+                          ((rcClient.right - rcClient.left) / nMaxLen) * i
+                   << " " << rcClient.bottom << " " << kMoveToOperator << "\n"
+                   << rcClient.left +
+                          ((rcClient.right - rcClient.left) / nMaxLen) * i
+                   << " " << rcClient.top << " " << kLineToOperator << " "
+                   << kStrokeOperator << "\n";
+          }
+        }
+        break;
+      }
+      default:
+        break;
+    }
+  }
+
+  Write("N",
+        GetBackgroundAppStream() + GetBorderAppStream() +
+            CFX_ByteString(sLines) + CFX_ByteString(sBody),
+        "");
+}
+
+void CPWL_AppStream::AddImage(const CFX_ByteString& sAPType,
+                              CPDF_Stream* pImage) {
+  CPDF_Stream* pStream = dict_->GetStreamFor(sAPType);
+  CPDF_Dictionary* pStreamDict = pStream->GetDict();
+  CFX_ByteString sImageAlias = "IMG";
+
+  if (CPDF_Dictionary* pImageDict = pImage->GetDict()) {
+    sImageAlias = pImageDict->GetStringFor("Name");
+    if (sImageAlias.IsEmpty())
+      sImageAlias = "IMG";
+  }
+
+  CPDF_Dictionary* pStreamResList = pStreamDict->GetDictFor("Resources");
+  if (!pStreamResList)
+    pStreamResList = pStreamDict->SetNewFor<CPDF_Dictionary>("Resources");
+
+  CPDF_Dictionary* pXObject =
+      pStreamResList->SetNewFor<CPDF_Dictionary>("XObject");
+  pXObject->SetNewFor<CPDF_Reference>(sImageAlias,
+                                      widget_->GetPageView()->GetPDFDocument(),
+                                      pImage->GetObjNum());
+}
+
+void CPWL_AppStream::Write(const CFX_ByteString& sAPType,
+                           const CFX_ByteString& sContents,
+                           const CFX_ByteString& sAPState) {
+  CPDF_Stream* pStream = nullptr;
+  CPDF_Dictionary* pParentDict = nullptr;
+  if (sAPState.IsEmpty()) {
+    pParentDict = dict_.Get();
+    pStream = dict_->GetStreamFor(sAPType);
+  } else {
+    CPDF_Dictionary* pAPTypeDict = dict_->GetDictFor(sAPType);
+    if (!pAPTypeDict)
+      pAPTypeDict = dict_->SetNewFor<CPDF_Dictionary>(sAPType);
+
+    pParentDict = pAPTypeDict;
+    pStream = pAPTypeDict->GetStreamFor(sAPState);
+  }
+
+  if (!pStream) {
+    CPDF_Document* doc = widget_->GetPageView()->GetPDFDocument();
+    pStream = doc->NewIndirect<CPDF_Stream>();
+    pParentDict->SetNewFor<CPDF_Reference>(sAPType, doc, pStream->GetObjNum());
+  }
+
+  CPDF_Dictionary* pStreamDict = pStream->GetDict();
+  if (!pStreamDict) {
+    auto pNewDict = pdfium::MakeUnique<CPDF_Dictionary>(
+        widget_->GetPDFAnnot()->GetDocument()->GetByteStringPool());
+    pStreamDict = pNewDict.get();
+    pStreamDict->SetNewFor<CPDF_Name>("Type", "XObject");
+    pStreamDict->SetNewFor<CPDF_Name>("Subtype", "Form");
+    pStreamDict->SetNewFor<CPDF_Number>("FormType", 1);
+    pStream->InitStream(nullptr, 0, std::move(pNewDict));
+  }
+  pStreamDict->SetMatrixFor("Matrix", widget_->GetMatrix());
+  pStreamDict->SetRectFor("BBox", widget_->GetRotatedRect());
+  pStream->SetData((uint8_t*)(sContents.c_str()), sContents.GetLength());
+}
+
+void CPWL_AppStream::Remove(const CFX_ByteString& sAPType) {
+  dict_->RemoveFor(sAPType);
+}
+
+CFX_ByteString CPWL_AppStream::GetBackgroundAppStream() const {
+  CFX_Color crBackground = widget_->GetFillPWLColor();
+  if (crBackground.nColorType != COLORTYPE_TRANSPARENT)
+    return GetRectFillAppStream(widget_->GetRotatedRect(), crBackground);
+
+  return CFX_ByteString();
+}
+
+CFX_ByteString CPWL_AppStream::GetBorderAppStream() const {
+  CFX_FloatRect rcWindow = widget_->GetRotatedRect();
+  CFX_Color crBorder = widget_->GetBorderPWLColor();
+  CFX_Color crBackground = widget_->GetFillPWLColor();
+  CFX_Color crLeftTop;
+  CFX_Color crRightBottom;
+
+  float fBorderWidth = static_cast<float>(widget_->GetBorderWidth());
+  CPWL_Dash dsBorder(3, 0, 0);
+
+  BorderStyle nBorderStyle = widget_->GetBorderStyle();
+  switch (nBorderStyle) {
+    case BorderStyle::DASH:
+      dsBorder = CPWL_Dash(3, 3, 0);
+      break;
+    case BorderStyle::BEVELED:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 1);
+      crRightBottom = crBackground / 2.0f;
+      break;
+    case BorderStyle::INSET:
+      fBorderWidth *= 2;
+      crLeftTop = CFX_Color(COLORTYPE_GRAY, 0.5);
+      crRightBottom = CFX_Color(COLORTYPE_GRAY, 0.75);
+      break;
+    default:
+      break;
+  }
+
+  return GetBorderAppStreamInternal(rcWindow, fBorderWidth, crBorder, crLeftTop,
+                                    crRightBottom, nBorderStyle, dsBorder);
+}