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 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 #define FWL_STYLEEXT_EDT_ReadOnly (1L << 0) 20 #define FWL_STYLEEXT_EDT_MultiLine (1L << 1) 21 #define FWL_STYLEEXT_EDT_WantReturn (1L << 2) 22 #define FWL_STYLEEXT_EDT_AutoHScroll (1L << 4) 23 #define FWL_STYLEEXT_EDT_AutoVScroll (1L << 5) 24 #define FWL_STYLEEXT_EDT_Validate (1L << 7) 25 #define FWL_STYLEEXT_EDT_Password (1L << 8) 26 #define FWL_STYLEEXT_EDT_Number (1L << 9) 27 #define FWL_STYLEEXT_EDT_CombText (1L << 17) 28 #define FWL_STYLEEXT_EDT_HNear 0 29 #define FWL_STYLEEXT_EDT_HCenter (1L << 18) 30 #define FWL_STYLEEXT_EDT_HFar (2L << 18) 31 #define FWL_STYLEEXT_EDT_VNear 0 32 #define FWL_STYLEEXT_EDT_VCenter (1L << 20) 33 #define FWL_STYLEEXT_EDT_VFar (2L << 20) 34 #define FWL_STYLEEXT_EDT_Justified (1L << 22) 35 #define FWL_STYLEEXT_EDT_HAlignMask (3L << 18) 36 #define FWL_STYLEEXT_EDT_VAlignMask (3L << 20) 37 #define FWL_STYLEEXT_EDT_HAlignModeMask (3L << 22) 38 #define FWL_STYLEEXT_EDT_ShowScrollbarFocus (1L << 25) 39 #define FWL_STYLEEXT_EDT_OuterScrollbar (1L << 26) 40 41 class CFWL_Edit; 42 class CFWL_MessageMouse; 43 class CFWL_Caret; 44 45 class CFWL_Edit : public CFWL_Widget, public CFDE_TextEditEngine::Delegate { 46 public: 47 CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED; 48 ~CFWL_Edit() override; 49 50 // CFWL_Widget: 51 void PreFinalize() override; 52 void Trace(cppgc::Visitor* visitor) const override; 53 FWL_Type GetClassID() const override; 54 CFX_RectF GetAutosizedWidgetRect() override; 55 CFX_RectF GetWidgetRect() override; 56 void Update() override; 57 FWL_WidgetHit HitTest(const CFX_PointF& point) override; 58 void SetStates(uint32_t dwStates) override; 59 void DrawWidget(CFGAS_GEGraphics* pGraphics, 60 const CFX_Matrix& matrix) override; 61 void OnProcessMessage(CFWL_Message* pMessage) override; 62 void OnProcessEvent(CFWL_Event* pEvent) override; 63 void OnDrawWidget(CFGAS_GEGraphics* pGraphics, 64 const CFX_Matrix& matrix) override; 65 66 virtual void SetText(const WideString& wsText); 67 virtual void SetTextSkipNotify(const WideString& wsText); 68 69 int32_t GetTextLength() const; 70 WideString GetText() const; 71 void ClearText(); 72 73 void SelectAll(); 74 void ClearSelection(); 75 bool HasSelection() const; 76 // Returns <start, count> of the selection. 77 std::pair<size_t, size_t> GetSelection() const; 78 79 int32_t GetLimit() const; 80 void SetLimit(int32_t nLimit); 81 void SetAliasChar(wchar_t wAlias); 82 Optional<WideString> Copy(); 83 Optional<WideString> Cut(); 84 bool Paste(const WideString& wsPaste); 85 bool Undo(); 86 bool Redo(); 87 bool CanUndo(); 88 bool CanRedo(); 89 90 // CFDE_TextEditEngine::Delegate 91 void NotifyTextFull() override; 92 void OnCaretChanged() override; 93 void OnTextWillChange(CFDE_TextEditEngine::TextChange* change) override; 94 void OnTextChanged() override; 95 void OnSelChanged() override; 96 bool OnValidate(const WideString& wsText) override; 97 void SetScrollOffset(float fScrollOffset) override; 98 99 protected: 100 CFWL_Edit(CFWL_App* app, const Properties& properties, CFWL_Widget* pOuter); 101 102 void ShowCaret(CFX_RectF* pRect); 103 void HideCaret(CFX_RectF* pRect); GetRTClient()104 const CFX_RectF& GetRTClient() const { return m_ClientRect; } GetTxtEdtEngine()105 CFDE_TextEditEngine* GetTxtEdtEngine() { return m_pEditEngine.get(); } 106 107 private: 108 void RenderText(CFX_RenderDevice* pRenderDev, 109 const CFX_RectF& clipRect, 110 const CFX_Matrix& mt); 111 void DrawContent(CFGAS_GEGraphics* pGraphics, const CFX_Matrix* pMatrix); 112 113 void UpdateEditEngine(); 114 void UpdateEditParams(); 115 void UpdateEditLayout(); 116 bool UpdateOffset(); 117 bool UpdateOffset(CFWL_ScrollBar* pScrollBar, float fPosChanged); 118 void UpdateVAlignment(); 119 void UpdateCaret(); 120 CFWL_ScrollBar* UpdateScroll(); 121 void Layout(); 122 void LayoutScrollBar(); 123 CFX_PointF DeviceToEngine(const CFX_PointF& pt); 124 void InitVerticalScrollBar(); 125 void InitHorizontalScrollBar(); 126 void InitEngine(); 127 void InitCaret(); 128 bool IsShowScrollBar(bool bVert); 129 bool IsContentHeightOverflow(); 130 void SetCursorPosition(size_t position); 131 void UpdateCursorRect(); 132 133 void DoRButtonDown(CFWL_MessageMouse* pMsg); 134 void OnFocusChanged(CFWL_Message* pMsg, bool bSet); 135 void OnLButtonDown(CFWL_MessageMouse* pMsg); 136 void OnLButtonUp(CFWL_MessageMouse* pMsg); 137 void OnButtonDoubleClick(CFWL_MessageMouse* pMsg); 138 void OnMouseMove(CFWL_MessageMouse* pMsg); 139 void OnKeyDown(CFWL_MessageKey* pMsg); 140 void OnChar(CFWL_MessageKey* pMsg); 141 bool OnScroll(CFWL_ScrollBar* pScrollBar, 142 CFWL_EventScroll::Code dwCode, 143 float fPos); 144 145 CFX_RectF m_ClientRect; 146 CFX_RectF m_EngineRect; 147 CFX_RectF m_StaticRect; 148 CFX_RectF m_CaretRect; 149 bool m_bLButtonDown = false; 150 int32_t m_nLimit = -1; 151 float m_fVAlignOffset = 0.0f; 152 float m_fScrollOffsetX = 0.0f; 153 float m_fScrollOffsetY = 0.0f; 154 float m_fFontSize = 0.0f; 155 size_t m_CursorPosition = 0; 156 std::unique_ptr<CFDE_TextEditEngine> const m_pEditEngine; 157 cppgc::Member<CFWL_ScrollBar> m_pVertScrollBar; 158 cppgc::Member<CFWL_ScrollBar> m_pHorzScrollBar; 159 cppgc::Member<CFWL_Caret> m_pCaret; 160 WideString m_wsCache; 161 WideString m_wsFont; 162 }; 163 164 #endif // XFA_FWL_CFWL_EDIT_H_ 165