1 files changed, 131 insertions, 0 deletions
diff --git a/fpdfsdk/pwl/cpwl_icon.cpp b/fpdfsdk/pwl/cpwl_icon.cpp
new file mode 100644
index 0000000000..8a2e31da6a
--- /dev/null
+++ b/fpdfsdk/pwl/cpwl_icon.cpp
@@ -0,0 +1,131 @@
+// Copyright 2014 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_icon.h"
+
+#include <algorithm>
+#include <sstream>
+
+#include "core/fpdfapi/parser/cpdf_array.h"
+#include "core/fpdfapi/parser/cpdf_stream.h"
+#include "fpdfsdk/pwl/cpwl_wnd.h"
+
+CPWL_Icon::CPWL_Icon() : m_pPDFStream(nullptr), m_pIconFit(nullptr) {}
+
+CPWL_Icon::~CPWL_Icon() {}
+
+std::pair<float, float> CPWL_Icon::GetImageSize() {
+  if (!m_pPDFStream)
+    return {0.0f, 0.0f};
+
+  CPDF_Dictionary* pDict = m_pPDFStream->GetDict();
+  if (!pDict)
+    return {0.0f, 0.0f};
+
+  CFX_FloatRect rect = pDict->GetRectFor("BBox");
+  return {rect.right - rect.left, rect.top - rect.bottom};
+}
+
+CFX_Matrix CPWL_Icon::GetImageMatrix() {
+  if (!m_pPDFStream)
+    return CFX_Matrix();
+  if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict())
+    return pDict->GetMatrixFor("Matrix");
+  return CFX_Matrix();
+}
+
+CFX_ByteString CPWL_Icon::GetImageAlias() {
+  if (!m_pPDFStream)
+    return CFX_ByteString();
+  if (CPDF_Dictionary* pDict = m_pPDFStream->GetDict())
+    return pDict->GetStringFor("Name");
+  return CFX_ByteString();
+}
+
+std::pair<float, float> CPWL_Icon::GetIconPosition() {
+  if (!m_pIconFit)
+    return {0.0f, 0.0f};
+
+  CPDF_Array* pA =
+      m_pIconFit->GetDict() ? m_pIconFit->GetDict()->GetArrayFor("A") : nullptr;
+  if (!pA)
+    return {0.0f, 0.0f};
+
+  size_t dwCount = pA->GetCount();
+  return {dwCount > 0 ? pA->GetNumberAt(0) : 0.0f,
+          dwCount > 1 ? pA->GetNumberAt(1) : 0.0f};
+}
+
+std::pair<float, float> CPWL_Icon::GetScale() {
+  float fHScale = 1.0f;
+  float fVScale = 1.0f;
+
+  if (!m_pPDFStream)
+    return {fHScale, fVScale};
+
+  CFX_FloatRect rcPlate = GetClientRect();
+  float fPlateWidth = rcPlate.right - rcPlate.left;
+  float fPlateHeight = rcPlate.top - rcPlate.bottom;
+
+  float fImageWidth;
+  float fImageHeight;
+  std::tie(fImageWidth, fImageHeight) = GetImageSize();
+
+  int32_t nScaleMethod = m_pIconFit ? m_pIconFit->GetScaleMethod() : 0;
+
+  switch (nScaleMethod) {
+    default:
+    case 0:
+      fHScale = fPlateWidth / std::max(fImageWidth, 1.0f);
+      fVScale = fPlateHeight / std::max(fImageHeight, 1.0f);
+      break;
+    case 1:
+      if (fPlateWidth < fImageWidth)
+        fHScale = fPlateWidth / std::max(fImageWidth, 1.0f);
+      if (fPlateHeight < fImageHeight)
+        fVScale = fPlateHeight / std::max(fImageHeight, 1.0f);
+      break;
+    case 2:
+      if (fPlateWidth > fImageWidth)
+        fHScale = fPlateWidth / std::max(fImageWidth, 1.0f);
+      if (fPlateHeight > fImageHeight)
+        fVScale = fPlateHeight / std::max(fImageHeight, 1.0f);
+      break;
+    case 3:
+      break;
+  }
+
+  float fMinScale;
+  if (m_pIconFit && m_pIconFit->IsProportionalScale()) {
+    fMinScale = std::min(fHScale, fVScale);
+    fHScale = fMinScale;
+    fVScale = fMinScale;
+  }
+  return {fHScale, fVScale};
+}
+
+std::pair<float, float> CPWL_Icon::GetImageOffset() {
+  float fLeft;
+  float fBottom;
+  std::tie(fLeft, fBottom) = GetIconPosition();
+
+  float fImageWidth;
+  float fImageHeight;
+  std::tie(fImageWidth, fImageHeight) = GetImageSize();
+
+  float fHScale, fVScale;
+  std::tie(fHScale, fVScale) = GetScale();
+
+  float fImageFactWidth = fImageWidth * fHScale;
+  float fImageFactHeight = fImageHeight * fVScale;
+
+  CFX_FloatRect rcPlate = GetClientRect();
+  float fPlateWidth = rcPlate.right - rcPlate.left;
+  float fPlateHeight = rcPlate.top - rcPlate.bottom;
+
+  return {(fPlateWidth - fImageFactWidth) * fLeft,
+          (fPlateHeight - fImageFactHeight) * fBottom};
+}