Display content of the annotation when mouse hover.

Each annotation has its contents, and users should be able to see the
contents. In this patch, PDFium creates a Popup annotation for each
annotation and stores the author and the content. When a user mouse
hover on the annotation, PDFium draws the corresponding Popup annotation
and displays the content.

Also, roll DEPS for testing/corpus to 5867fa6.

BUG=62625

Review-Url: https://codereview.chromium.org/2273893002

1 files changed, 114 insertions, 0 deletions

diff --git a/fpdfsdk/include/cpdfsdk_baannothandler.h b/fpdfsdk/include/cpdfsdk_baannothandler.h
new file mode 100644
index 0000000000..c1936a798e
--- /dev/null
+++ b/fpdfsdk/include/cpdfsdk_baannothandler.h
@@ -0,0 +1,114 @@
+// 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
+
+#ifndef FPDFSDK_INCLUDE_CPDFSDK_BAANNOTHANDLER_H_
+#define FPDFSDK_INCLUDE_CPDFSDK_BAANNOTHANDLER_H_
+
+#include "core/fxcrt/include/fx_basic.h"
+#include "core/fxcrt/include/fx_coordinates.h"
+#include "fpdfsdk/include/ipdfsdk_annothandler.h"
+
+class CFFL_IFormFiller;
+class CFX_Matrix;
+class CFX_RenderDevice;
+class CPDF_Annot;
+class CPDFDoc_Environment;
+class CPDFSDK_Annot;
+class CPDFSDK_PageView;
+
+#ifdef PDF_ENABLE_XFA
+class CXFA_FFWidget;
+#endif  // PDF_ENABLE_XFA
+
+class CPDFSDK_BAAnnotHandler : public IPDFSDK_AnnotHandler {
+ public:
+  CPDFSDK_BAAnnotHandler();
+  ~CPDFSDK_BAAnnotHandler() override;
+
+  CFX_ByteString GetType() override;
+  FX_BOOL CanAnswer(CPDFSDK_Annot* pAnnot) override;
+  CPDFSDK_Annot* NewAnnot(CPDF_Annot* pAnnot, CPDFSDK_PageView* pPage) override;
+#ifdef PDF_ENABLE_XFA
+  CPDFSDK_Annot* NewAnnot(CXFA_FFWidget* hWidget,
+                          CPDFSDK_PageView* pPage) override;
+#endif  // PDF_ENABLE_XFA
+  void ReleaseAnnot(CPDFSDK_Annot* pAnnot) override;
+  void DeleteAnnot(CPDFSDK_Annot* pAnnot) override;
+  CFX_FloatRect GetViewBBox(CPDFSDK_PageView* pPageView,
+                            CPDFSDK_Annot* pAnnot) override;
+  FX_BOOL HitTest(CPDFSDK_PageView* pPageView,
+                  CPDFSDK_Annot* pAnnot,
+                  const CFX_FloatPoint& point) override;
+  void OnDraw(CPDFSDK_PageView* pPageView,
+              CPDFSDK_Annot* pAnnot,
+              CFX_RenderDevice* pDevice,
+              CFX_Matrix* pUser2Device,
+              uint32_t dwFlags) override;
+  void OnDrawSleep(CPDFSDK_PageView* pPageView,
+                   CPDFSDK_Annot* pAnnot,
+                   CFX_RenderDevice* pDevice,
+                   CFX_Matrix* pUser2Device,
+                   const CFX_FloatRect& rcWindow,
+                   uint32_t dwFlags) override;
+  void OnCreate(CPDFSDK_Annot* pAnnot) override;
+  void OnLoad(CPDFSDK_Annot* pAnnot) override;
+  void OnDelete(CPDFSDK_Annot* pAnnot) override;
+  void OnRelease(CPDFSDK_Annot* pAnnot) override;
+  void OnMouseEnter(CPDFSDK_PageView* pPageView,
+                    CPDFSDK_Annot* pAnnot,
+                    uint32_t nFlag) override;
+  void OnMouseExit(CPDFSDK_PageView* pPageView,
+                   CPDFSDK_Annot* pAnnot,
+                   uint32_t nFlag) override;
+  FX_BOOL OnLButtonDown(CPDFSDK_PageView* pPageView,
+                        CPDFSDK_Annot* pAnnot,
+                        uint32_t nFlags,
+                        const CFX_FloatPoint& point) override;
+  FX_BOOL OnLButtonUp(CPDFSDK_PageView* pPageView,
+                      CPDFSDK_Annot* pAnnot,
+                      uint32_t nFlags,
+                      const CFX_FloatPoint& point) override;
+  FX_BOOL OnLButtonDblClk(CPDFSDK_PageView* pPageView,
+                          CPDFSDK_Annot* pAnnot,
+                          uint32_t nFlags,
+                          const CFX_FloatPoint& point) override;
+  FX_BOOL OnMouseMove(CPDFSDK_PageView* pPageView,
+                      CPDFSDK_Annot* pAnnot,
+                      uint32_t nFlags,
+                      const CFX_FloatPoint& point) override;
+  FX_BOOL OnMouseWheel(CPDFSDK_PageView* pPageView,
+                       CPDFSDK_Annot* pAnnot,
+                       uint32_t nFlags,
+                       short zDelta,
+                       const CFX_FloatPoint& point) override;
+  FX_BOOL OnRButtonDown(CPDFSDK_PageView* pPageView,
+                        CPDFSDK_Annot* pAnnot,
+                        uint32_t nFlags,
+                        const CFX_FloatPoint& point) override;
+  FX_BOOL OnRButtonUp(CPDFSDK_PageView* pPageView,
+                      CPDFSDK_Annot* pAnnot,
+                      uint32_t nFlags,
+                      const CFX_FloatPoint& point) override;
+  FX_BOOL OnRButtonDblClk(CPDFSDK_PageView* pPageView,
+                          CPDFSDK_Annot* pAnnot,
+                          uint32_t nFlags,
+                          const CFX_FloatPoint& point) override;
+  FX_BOOL OnChar(CPDFSDK_Annot* pAnnot,
+                 uint32_t nChar,
+                 uint32_t nFlags) override;
+  FX_BOOL OnKeyDown(CPDFSDK_Annot* pAnnot, int nKeyCode, int nFlag) override;
+  FX_BOOL OnKeyUp(CPDFSDK_Annot* pAnnot, int nKeyCode, int nFlag) override;
+  void OnDeSelected(CPDFSDK_Annot* pAnnot) override;
+  void OnSelected(CPDFSDK_Annot* pAnnot) override;
+  FX_BOOL OnSetFocus(CPDFSDK_Annot* pAnnot, uint32_t nFlag) override;
+  FX_BOOL OnKillFocus(CPDFSDK_Annot* pAnnot, uint32_t nFlag) override;
+#ifdef PDF_ENABLE_XFA
+  FX_BOOL OnXFAChangedFocus(CPDFSDK_Annot* pOldAnnot,
+                            CPDFSDK_Annot* pNewAnnot) override;
+#endif  // PDF_ENABLE_XFA
+};
+
+#endif  // FPDFSDK_INCLUDE_CPDFSDK_BAANNOTHANDLER_H_