1 // Copyright 2014 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #ifndef XFA_FXFA_CXFA_FFFIELD_H_
8 #define XFA_FXFA_CXFA_FFFIELD_H_
9 
10 #include <memory>
11 
12 #include "xfa/fwl/cfwl_widget.h"
13 #include "xfa/fwl/ifwl_widgetdelegate.h"
14 #include "xfa/fxfa/cxfa_ffpageview.h"
15 #include "xfa/fxfa/cxfa_ffwidget.h"
16 
17 class CXFA_FFDropDown;
18 class CXFA_Node;
19 
20 #define XFA_MINUI_HEIGHT 4.32f
21 #define XFA_DEFAULTUI_HEIGHT 2.0f
22 
23 class CXFA_FFField : public CXFA_FFWidget, public IFWL_WidgetDelegate {
24  public:
25   enum ShapeOption { kSquareShape = 0, kRoundShape };
26 
27   explicit CXFA_FFField(CXFA_Node* pNode);
28   ~CXFA_FFField() override;
29 
30   virtual CXFA_FFDropDown* AsDropDown();
31 
32   // CXFA_FFWidget:
33   CXFA_FFField* AsField() override;
34   CFX_RectF GetBBox(FocusOption focus) override;
35   void RenderWidget(CXFA_Graphics* pGS,
36                     const CFX_Matrix& matrix,
37                     HighlightOption highlight) override;
38   bool IsLoaded() override;
39   bool LoadWidget() override;
40   bool PerformLayout() override;
41   bool AcceptsFocusOnButtonDown(uint32_t dwFlags,
42                                 const CFX_PointF& point,
43                                 FWL_MouseCommand command) override;
44   bool OnMouseEnter() override;
45   bool OnMouseExit() override;
46   bool OnLButtonDown(uint32_t dwFlags, const CFX_PointF& point) override;
47   bool OnLButtonUp(uint32_t dwFlags, const CFX_PointF& point) override;
48   bool OnLButtonDblClk(uint32_t dwFlags, const CFX_PointF& point) override;
49   bool OnMouseMove(uint32_t dwFlags, const CFX_PointF& point) override;
50   bool OnMouseWheel(uint32_t dwFlags,
51                     int16_t zDelta,
52                     const CFX_PointF& point) override;
53   bool OnRButtonDown(uint32_t dwFlags, const CFX_PointF& point) override;
54   bool OnRButtonUp(uint32_t dwFlags, const CFX_PointF& point) override;
55   bool OnRButtonDblClk(uint32_t dwFlags, const CFX_PointF& point) override;
56   bool OnSetFocus(CXFA_FFWidget* pOldWidget) override WARN_UNUSED_RESULT;
57   bool OnKillFocus(CXFA_FFWidget* pNewWidget) override WARN_UNUSED_RESULT;
58   bool OnKeyDown(uint32_t dwKeyCode, uint32_t dwFlags) override;
59   bool OnKeyUp(uint32_t dwKeyCode, uint32_t dwFlags) override;
60   bool OnChar(uint32_t dwChar, uint32_t dwFlags) override;
61   bool OnSetCursor(const CFX_PointF& point) override;
62   FWL_WidgetHit HitTest(const CFX_PointF& point) override;
63 
64   // IFWL_WidgetDelegate:
65   void OnProcessMessage(CFWL_Message* pMessage) override;
66   void OnProcessEvent(CFWL_Event* pEvent) override;
67   void OnDrawWidget(CXFA_Graphics* pGraphics,
68                     const CFX_Matrix& matrix) override;
69 
70   void UpdateFWL();
71   uint32_t UpdateUIProperty();
72 
73  protected:
74   bool PtInActiveRect(const CFX_PointF& point) override;
75 
76   virtual void SetFWLRect();
77   void SetFWLThemeProvider();
78   CFWL_Widget* GetNormalWidget();
79   const CFWL_Widget* GetNormalWidget() const;
80   void SetNormalWidget(std::unique_ptr<CFWL_Widget> widget);
81   CFX_PointF FWLToClient(const CFX_PointF& point);
82   void LayoutCaption();
83   void RenderCaption(CXFA_Graphics* pGS, CFX_Matrix* pMatrix);
84 
85   int32_t CalculateOverride();
86   int32_t CalculateNode(CXFA_Node* pNode);
87   bool ProcessCommittedData();
88   virtual bool CommitData();
89   virtual bool IsDataChanged();
90   void DrawHighlight(CXFA_Graphics* pGS,
91                      CFX_Matrix* pMatrix,
92                      HighlightOption highlight,
93                      ShapeOption shape);
94   void DrawFocus(CXFA_Graphics* pGS, CFX_Matrix* pMatrix);
95   void SendMessageToFWLWidget(std::unique_ptr<CFWL_Message> pMessage);
96   void CapPlacement();
97   void CapTopBottomPlacement(const CXFA_Margin* margin,
98                              const CFX_RectF& rtWidget,
99                              XFA_AttributeValue iCapPlacement);
100   void CapLeftRightPlacement(const CXFA_Margin* margin,
101                              const CFX_RectF& rtWidget,
102                              XFA_AttributeValue iCapPlacement);
103   void SetEditScrollOffset();
104 
105   CFX_RectF m_rtUI;
106   CFX_RectF m_rtCaption;
107 
108  private:
109   std::unique_ptr<CFWL_Widget> m_pNormalWidget;
110 };
111 
ToDropDown(CXFA_FFField * field)112 inline CXFA_FFDropDown* ToDropDown(CXFA_FFField* field) {
113   return field ? field->AsDropDown() : nullptr;
114 }
115 
116 #endif  // XFA_FXFA_CXFA_FFFIELD_H_
117