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_FWL_CFWL_EDIT_H_ 8 #define XFA_FWL_CFWL_EDIT_H_ 9 10 #include <memory> 11 #include <utility> 12 #include <vector> 13 14 #include "xfa/fde/cfde_texteditengine.h" 15 #include "xfa/fwl/cfwl_event.h" 16 #include "xfa/fwl/cfwl_scrollbar.h" 17 #include "xfa/fwl/cfwl_widget.h" 18 #include "xfa/fxgraphics/cxfa_gepath.h" 19 20 #define FWL_STYLEEXT_EDT_ReadOnly (1L << 0) 21 #define FWL_STYLEEXT_EDT_MultiLine (1L << 1) 22 #define FWL_STYLEEXT_EDT_WantReturn (1L << 2) 23 #define FWL_STYLEEXT_EDT_AutoHScroll (1L << 4) 24 #define FWL_STYLEEXT_EDT_AutoVScroll (1L << 5) 25 #define FWL_STYLEEXT_EDT_Validate (1L << 7) 26 #define FWL_STYLEEXT_EDT_Password (1L << 8) 27 #define FWL_STYLEEXT_EDT_Number (1L << 9) 28 #define FWL_STYLEEXT_EDT_CombText (1L << 17) 29 #define FWL_STYLEEXT_EDT_HNear 0 30 #define FWL_STYLEEXT_EDT_HCenter (1L << 18) 31 #define FWL_STYLEEXT_EDT_HFar (2L << 18) 32 #define FWL_STYLEEXT_EDT_VNear 0 33 #define FWL_STYLEEXT_EDT_VCenter (1L << 20) 34 #define FWL_STYLEEXT_EDT_VFar (2L << 20) 35 #define FWL_STYLEEXT_EDT_Justified (1L << 22) 36 #define FWL_STYLEEXT_EDT_HAlignMask (3L << 18) 37 #define FWL_STYLEEXT_EDT_VAlignMask (3L << 20) 38 #define FWL_STYLEEXT_EDT_HAlignModeMask (3L << 22) 39 #define FWL_STYLEEXT_EDT_ShowScrollbarFocus (1L << 25) 40 #define FWL_STYLEEXT_EDT_OuterScrollbar (1L << 26) 41 42 class CFWL_Edit; 43 class CFWL_MessageMouse; 44 class CFWL_WidgetProperties; 45 class CFWL_Caret; 46 47 class CFWL_Edit : public CFWL_Widget, public CFDE_TextEditEngine::Delegate { 48 public: 49 CFWL_Edit(const CFWL_App* app, 50 std::unique_ptr<CFWL_WidgetProperties> properties, 51 CFWL_Widget* pOuter); 52 ~CFWL_Edit() override; 53 54 // CFWL_Widget: 55 FWL_Type GetClassID() const override; 56 CFX_RectF GetAutosizedWidgetRect() override; 57 CFX_RectF GetWidgetRect() override; 58 void Update() override; 59 FWL_WidgetHit HitTest(const CFX_PointF& point) override; 60 void SetStates(uint32_t dwStates) override; 61 void DrawWidget(CXFA_Graphics* pGraphics, const CFX_Matrix& matrix) override; 62 void SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) override; 63 void OnProcessMessage(CFWL_Message* pMessage) override; 64 void OnProcessEvent(CFWL_Event* pEvent) override; 65 void OnDrawWidget(CXFA_Graphics* pGraphics, 66 const CFX_Matrix& matrix) override; 67 68 virtual void SetText(const WideString& wsText); 69 70 int32_t GetTextLength() const; 71 WideString GetText() const; 72 void ClearText(); 73 74 void SelectAll(); 75 void ClearSelection(); 76 bool HasSelection() const; 77 // Returns <start, count> of the selection. 78 std::pair<size_t, size_t> GetSelection() const; 79 80 int32_t GetLimit() const; 81 void SetLimit(int32_t nLimit); 82 void SetAliasChar(wchar_t wAlias); 83 Optional<WideString> Copy(); 84 Optional<WideString> Cut(); 85 bool Paste(const WideString& wsPaste); 86 bool Undo(); 87 bool Redo(); 88 bool CanUndo(); 89 bool CanRedo(); 90 91 void SetOuter(CFWL_Widget* pOuter); 92 93 // CFDE_TextEditEngine::Delegate 94 void NotifyTextFull() override; 95 void OnCaretChanged() override; 96 void OnTextChanged(const WideString& prevText) override; 97 void OnSelChanged() override; 98 bool OnValidate(const WideString& wsText) override; 99 void SetScrollOffset(float fScrollOffset) override; 100 101 protected: 102 void ShowCaret(CFX_RectF* pRect); 103 void HideCaret(CFX_RectF* pRect); GetRTClient()104 const CFX_RectF& GetRTClient() const { return m_rtClient; } GetTxtEdtEngine()105 CFDE_TextEditEngine* GetTxtEdtEngine() { return &m_EdtEngine; } 106 107 private: 108 void RenderText(CFX_RenderDevice* pRenderDev, 109 const CFX_RectF& clipRect, 110 const CFX_Matrix& mt); 111 void DrawTextBk(CXFA_Graphics* pGraphics, 112 IFWL_ThemeProvider* pTheme, 113 const CFX_Matrix* pMatrix); 114 void DrawContent(CXFA_Graphics* pGraphics, 115 IFWL_ThemeProvider* pTheme, 116 const CFX_Matrix* pMatrix); 117 void DrawSpellCheck(CXFA_Graphics* pGraphics, const CFX_Matrix* pMatrix); 118 119 void UpdateEditEngine(); 120 void UpdateEditParams(); 121 void UpdateEditLayout(); 122 bool UpdateOffset(); 123 bool UpdateOffset(CFWL_ScrollBar* pScrollBar, float fPosChanged); 124 void UpdateVAlignment(); 125 void UpdateCaret(); 126 CFWL_ScrollBar* UpdateScroll(); 127 void Layout(); 128 void LayoutScrollBar(); 129 CFX_PointF DeviceToEngine(const CFX_PointF& pt); 130 void InitVerticalScrollBar(); 131 void InitHorizontalScrollBar(); 132 void InitEngine(); 133 void InitCaret(); 134 bool ValidateNumberChar(wchar_t cNum); 135 bool IsShowScrollBar(bool bVert); 136 bool IsContentHeightOverflow(); 137 void AddSpellCheckObj(CXFA_GEPath& PathData, 138 int32_t nStart, 139 int32_t nCount, 140 float fOffSetX, 141 float fOffSetY); 142 void SetCursorPosition(size_t position); 143 void UpdateCursorRect(); 144 145 void DoRButtonDown(CFWL_MessageMouse* pMsg); 146 void OnFocusChanged(CFWL_Message* pMsg, bool bSet); 147 void OnLButtonDown(CFWL_MessageMouse* pMsg); 148 void OnLButtonUp(CFWL_MessageMouse* pMsg); 149 void OnButtonDoubleClick(CFWL_MessageMouse* pMsg); 150 void OnMouseMove(CFWL_MessageMouse* pMsg); 151 void OnKeyDown(CFWL_MessageKey* pMsg); 152 void OnChar(CFWL_MessageKey* pMsg); 153 bool OnScroll(CFWL_ScrollBar* pScrollBar, 154 CFWL_EventScroll::Code dwCode, 155 float fPos); 156 157 CFX_RectF m_rtClient; 158 CFX_RectF m_rtEngine; 159 CFX_RectF m_rtStatic; 160 CFX_RectF m_rtCaret; 161 float m_fVAlignOffset; 162 float m_fScrollOffsetX; 163 float m_fScrollOffsetY; 164 CFDE_TextEditEngine m_EdtEngine; 165 bool m_bLButtonDown; 166 size_t m_CursorPosition; 167 int32_t m_nLimit; 168 float m_fFontSize; 169 bool m_bSetRange; 170 int32_t m_iMax; 171 std::unique_ptr<CFWL_ScrollBar> m_pVertScrollBar; 172 std::unique_ptr<CFWL_ScrollBar> m_pHorzScrollBar; 173 std::unique_ptr<CFWL_Caret> m_pCaret; 174 WideString m_wsCache; 175 WideString m_wsFont; 176 }; 177 178 #endif // XFA_FWL_CFWL_EDIT_H_ 179