Add CPDF_Transparency.

Encapsulates transparency status instead of having it be a raw int.

Change-Id: I8b10dafa97da112795cf84c46cf416a0294551d5
Reviewed-on: https://pdfium-review.googlesource.com/32194
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 25 insertions, 0 deletions

diff --git a/core/fpdfapi/render/cpdf_transparency.h b/core/fpdfapi/render/cpdf_transparency.h
new file mode 100644
index 0000000000..92f7c83b73
--- /dev/null
+++ b/core/fpdfapi/render/cpdf_transparency.h
@@ -0,0 +1,25 @@
+// Copyright 2018 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.
+
+#ifndef CORE_FPDFAPI_RENDER_CPDF_TRANSPARENCY_H_
+#define CORE_FPDFAPI_RENDER_CPDF_TRANSPARENCY_H_
+
+class CPDF_Transparency {
+ public:
+  CPDF_Transparency();
+
+  CPDF_Transparency(const CPDF_Transparency& other);
+
+  bool IsGroup() const { return m_bGroup; }
+  bool IsIsolated() const { return m_bIsolated; }
+
+  void SetGroup() { m_bGroup = true; }
+  void SetIsolated() { m_bIsolated = true; }
+
+ private:
+  bool m_bGroup = false;
+  bool m_bIsolated = false;
+};
+
+#endif  // CORE_FPDFAPI_RENDER_CPDF_TRANSPARENCY_H_