1 // Copyright 2014 The PDFium Authors 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 13 #include "xfa/fde/cfde_texteditengine.h" 14 #include "xfa/fgas/graphics/cfgas_gepath.h" 15 #include "xfa/fwl/cfwl_event.h" 16 #include "xfa/fwl/cfwl_scrollbar.h" 17 #include "xfa/fwl/cfwl_widget.h" 18 19 class CFX_RenderDevice; 20 21 namespace pdfium { 22 23 #define FWL_STYLEEXT_EDT_ReadOnly (1L << 0) 24 #define FWL_STYLEEXT_EDT_MultiLine (1L << 1) 25 #define FWL_STYLEEXT_EDT_WantReturn (1L << 2) 26 #define FWL_STYLEEXT_EDT_AutoHScroll (1L << 4) 27 #define FWL_STYLEEXT_EDT_AutoVScroll (1L << 5) 28 #define FWL_STYLEEXT_EDT_Validate (1L << 7) 29 #define FWL_STYLEEXT_EDT_Password (1L << 8) 30 #define FWL_STYLEEXT_EDT_Number (1L << 9) 31 #define FWL_STYLEEXT_EDT_CombText (1L << 17) 32 #define FWL_STYLEEXT_EDT_HNear 0 33 #define FWL_STYLEEXT_EDT_HCenter (1L << 18) 34 #define FWL_STYLEEXT_EDT_HFar (2L << 18) 35 #define FWL_STYLEEXT_EDT_VNear 0 36 #define FWL_STYLEEXT_EDT_VCenter (1L << 20) 37 #define FWL_STYLEEXT_EDT_VFar (2L << 20) 38 #define FWL_STYLEEXT_EDT_Justified (1L << 22) 39 #define FWL_STYLEEXT_EDT_HAlignMask (3L << 18) 40 #define FWL_STYLEEXT_EDT_VAlignMask (3L << 20) 41 #define FWL_STYLEEXT_EDT_HAlignModeMask (3L << 22) 42 #define FWL_STYLEEXT_EDT_ShowScrollbarFocus (1L << 25) 43 #define FWL_STYLEEXT_EDT_OuterScrollbar (1L << 26) 44 45 class CFWL_MessageKey; 46 class CFWL_MessageMouse; 47 class CFWL_Caret; 48 49 class CFWL_Edit : public CFWL_Widget, public CFDE_TextEditEngine::Delegate { 50 public: 51 CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED; 52 ~CFWL_Edit() override; 53 54 // CFWL_Widget: 55 void PreFinalize() override; 56 void Trace(cppgc::Visitor* visitor) const override; 57 FWL_Type GetClassID() const override; 58 CFX_RectF GetAutosizedWidgetRect() override; 59 CFX_RectF GetWidgetRect() override; 60 void Update() override; 61 FWL_WidgetHit HitTest(const CFX_PointF& point) override; 62 void SetStates(uint32_t dwStates) override; 63 void DrawWidget(CFGAS_GEGraphics* pGraphics, 64 const CFX_Matrix& matrix) override; 65 void OnProcessMessage(CFWL_Message* pMessage) override; 66 void OnProcessEvent(CFWL_Event* pEvent) override; 67 void OnDrawWidget(CFGAS_GEGraphics* pGraphics, 68 const CFX_Matrix& matrix) override; 69 70 virtual void SetText(const WideString& wsText); 71 virtual void SetTextSkipNotify(const WideString& wsText); 72 73 size_t GetTextLength() const; 74 WideString GetText() const; 75 void ClearText(); 76 77 void SelectAll(); 78 void ClearSelection(); 79 bool HasSelection() const; 80 // Returns <start, count> of the selection. 81 std::pair<size_t, size_t> GetSelection() const; 82 83 int32_t GetLimit() const; 84 void SetLimit(int32_t nLimit); 85 void SetAliasChar(wchar_t wAlias); 86 std::optional<WideString> Copy(); 87 std::optional<WideString> Cut(); 88 bool Paste(const WideString& wsPaste); 89 bool Undo(); 90 bool Redo(); 91 bool CanUndo(); 92 bool CanRedo(); 93 94 // CFDE_TextEditEngine::Delegate 95 void NotifyTextFull() override; 96 void OnCaretChanged() override; 97 void OnTextWillChange(CFDE_TextEditEngine::TextChange* change) override; 98 void OnTextChanged() override; 99 void OnSelChanged() override; 100 bool OnValidate(const WideString& wsText) override; 101 void SetScrollOffset(float fScrollOffset) override; 102 103 protected: 104 CFWL_Edit(CFWL_App* app, const Properties& properties, CFWL_Widget* pOuter); 105 106 void ShowCaret(CFX_RectF* pRect); 107 void HideCaret(CFX_RectF* pRect); GetRTClient()108 const CFX_RectF& GetRTClient() const { return m_ClientRect; } GetTxtEdtEngine()109 CFDE_TextEditEngine* GetTxtEdtEngine() { return m_pEditEngine.get(); } 110 111 private: 112 void RenderText(CFX_RenderDevice* pRenderDev, 113 const CFX_RectF& clipRect, 114 const CFX_Matrix& mt); 115 void DrawContent(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 116 void DrawContentNonComb(CFGAS_GEGraphics* pGraphics, 117 const CFX_Matrix& mtMatrix); 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 InitEngine(); 132 void InitCaret(); 133 bool IsShowVertScrollBar() const; 134 bool IsContentHeightOverflow() const; 135 void SetCursorPosition(size_t position); 136 void UpdateCursorRect(); 137 138 void DoRButtonDown(CFWL_MessageMouse* pMsg); 139 void OnFocusGained(); 140 void OnFocusLost(); 141 void OnLButtonDown(CFWL_MessageMouse* pMsg); 142 void OnLButtonUp(CFWL_MessageMouse* pMsg); 143 void OnButtonDoubleClick(CFWL_MessageMouse* pMsg); 144 void OnMouseMove(CFWL_MessageMouse* pMsg); 145 void OnKeyDown(CFWL_MessageKey* pMsg); 146 void OnChar(CFWL_MessageKey* pMsg); 147 bool OnScroll(CFWL_ScrollBar* pScrollBar, 148 CFWL_EventScroll::Code dwCode, 149 float fPos); 150 151 CFX_RectF m_ClientRect; 152 CFX_RectF m_EngineRect; 153 CFX_RectF m_StaticRect; 154 CFX_RectF m_CaretRect; 155 bool m_bLButtonDown = false; 156 int32_t m_nLimit = -1; 157 float m_fVAlignOffset = 0.0f; 158 float m_fScrollOffsetX = 0.0f; 159 float m_fScrollOffsetY = 0.0f; 160 float m_fFontSize = 0.0f; 161 size_t m_CursorPosition = 0; 162 std::unique_ptr<CFDE_TextEditEngine> const m_pEditEngine; 163 cppgc::Member<CFWL_ScrollBar> m_pVertScrollBar; 164 cppgc::Member<CFWL_Caret> m_pCaret; 165 WideString m_wsCache; 166 WideString m_wsFont; 167 }; 168 169 } // namespace pdfium 170 171 // TODO(crbug.com/42271761): Remove. 172 using pdfium::CFWL_Edit; 173 174 #endif // XFA_FWL_CFWL_EDIT_H_ 175