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_LISTBOX_H_ 8 #define XFA_FWL_CFWL_LISTBOX_H_ 9 10 #include <memory> 11 #include <vector> 12 13 #include "core/fxcrt/unowned_ptr.h" 14 #include "xfa/fwl/cfwl_edit.h" 15 #include "xfa/fwl/cfwl_event.h" 16 #include "xfa/fwl/cfwl_listbox.h" 17 #include "xfa/fwl/cfwl_widget.h" 18 #include "xfa/fwl/fwl_widgetdef.h" 19 20 #define FWL_STYLEEXT_LTB_MultiSelection (1L << 0) 21 #define FWL_STYLEEXT_LTB_LeftAlign (0L << 4) 22 #define FWL_STYLEEXT_LTB_CenterAlign (1L << 4) 23 #define FWL_STYLEEXT_LTB_RightAlign (2L << 4) 24 #define FWL_STYLEEXT_LTB_AlignMask (3L << 4) 25 #define FWL_STYLEEXT_LTB_ShowScrollBarFocus (1L << 10) 26 27 class CFWL_MessageMouse; 28 class CFWL_MessageMouseWheel; 29 30 class CFWL_ListBox : public CFWL_Widget { 31 public: 32 class Item { 33 public: 34 explicit Item(const WideString& text); 35 ~Item(); 36 IsSelected()37 bool IsSelected() const { return m_bIsSelected; } SetSelected(bool enable)38 void SetSelected(bool enable) { m_bIsSelected = enable; } IsFocused()39 bool IsFocused() const { return m_bIsFocused; } SetFocused(bool enable)40 void SetFocused(bool enable) { m_bIsFocused = enable; } GetRect()41 CFX_RectF GetRect() const { return m_ItemRect; } SetRect(const CFX_RectF & rect)42 void SetRect(const CFX_RectF& rect) { m_ItemRect = rect; } GetText()43 WideString GetText() const { return m_wsText; } 44 45 private: 46 bool m_bIsSelected = false; 47 bool m_bIsFocused = false; 48 CFX_RectF m_ItemRect; 49 const WideString m_wsText; 50 }; 51 52 CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED; 53 ~CFWL_ListBox() override; 54 55 // CFWL_Widget: 56 void Trace(cppgc::Visitor* visitor) const override; 57 FWL_Type GetClassID() const override; 58 void Update() override; 59 FWL_WidgetHit HitTest(const CFX_PointF& point) override; 60 void DrawWidget(CFGAS_GEGraphics* pGraphics, 61 const CFX_Matrix& matrix) override; 62 void OnProcessMessage(CFWL_Message* pMessage) override; 63 void OnProcessEvent(CFWL_Event* pEvent) override; 64 void OnDrawWidget(CFGAS_GEGraphics* pGraphics, 65 const CFX_Matrix& matrix) override; 66 67 int32_t CountItems(const CFWL_Widget* pWidget) const; 68 Item* GetItem(const CFWL_Widget* pWidget, int32_t nIndex) const; 69 int32_t GetItemIndex(CFWL_Widget* pWidget, Item* pItem); 70 Item* AddString(const WideString& wsAdd); 71 void RemoveAt(int32_t iIndex); 72 void DeleteString(Item* pItem); 73 void DeleteAll(); 74 int32_t CountSelItems(); 75 Item* GetSelItem(int32_t nIndexSel); 76 int32_t GetSelIndex(int32_t nIndex); 77 void SetSelItem(Item* hItem, bool bSelect); 78 float CalcItemHeight(); 79 80 protected: 81 CFWL_ListBox(CFWL_App* pApp, 82 const Properties& properties, 83 CFWL_Widget* pOuter); 84 85 Item* GetListItem(Item* hItem, XFA_FWL_VKEYCODE dwKeyCode); 86 void SetSelection(Item* hStart, Item* hEnd, bool bSelected); 87 Item* GetItemAtPoint(const CFX_PointF& point); 88 bool ScrollToVisible(Item* hItem); 89 void InitVerticalScrollBar(); 90 void InitHorizontalScrollBar(); 91 bool IsShowVertScrollBar() const; 92 bool IsShowHorzScrollBar() const; 93 bool ScrollBarPropertiesPresent() const; GetVertScrollBar()94 CFWL_ScrollBar* GetVertScrollBar() const { return m_pVertScrollBar; } GetRTClient()95 const CFX_RectF& GetRTClient() const { return m_ClientRect; } 96 97 private: 98 bool IsMultiSelection() const; 99 void ClearSelection(); 100 void SelectAll(); 101 Item* GetFocusedItem(); 102 void SetFocusItem(Item* hItem); 103 void DrawBkground(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 104 void DrawItems(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 105 void DrawItem(CFGAS_GEGraphics* pGraphics, 106 Item* hItem, 107 int32_t Index, 108 const CFX_RectF& rtItem, 109 const CFX_Matrix& pMatrix); 110 void DrawStatic(CFGAS_GEGraphics* pGraphics); 111 CFX_SizeF CalcSize(); 112 void UpdateItemSize(Item* hItem, 113 CFX_SizeF& size, 114 float fWidth, 115 float fHeight) const; 116 float GetMaxTextWidth(); 117 float GetScrollWidth(); 118 119 void OnFocusGained(); 120 void OnFocusLost(); 121 void OnLButtonDown(CFWL_MessageMouse* pMsg); 122 void OnLButtonUp(CFWL_MessageMouse* pMsg); 123 void OnMouseWheel(CFWL_MessageMouseWheel* pMsg); 124 void OnKeyDown(CFWL_MessageKey* pMsg); 125 void OnVK(Item* hItem, bool bShift, bool bCtrl); 126 bool OnScroll(CFWL_ScrollBar* pScrollBar, 127 CFWL_EventScroll::Code dwCode, 128 float fPos); 129 130 CFX_RectF m_ClientRect; 131 CFX_RectF m_StaticRect; 132 CFX_RectF m_ContentRect; 133 cppgc::Member<CFWL_ScrollBar> m_pHorzScrollBar; 134 cppgc::Member<CFWL_ScrollBar> m_pVertScrollBar; 135 FDE_TextStyle m_TTOStyles; 136 FDE_TextAlignment m_iTTOAligns = FDE_TextAlignment::kTopLeft; 137 bool m_bLButtonDown = false; 138 float m_fItemHeight = 0.0f; 139 float m_fScorllBarWidth = 0.0f; 140 std::vector<std::unique_ptr<Item>> m_ItemArray; // Must outlive `m_hAnchor`. 141 UnownedPtr<Item> m_hAnchor; 142 }; 143 144 #endif // XFA_FWL_CFWL_LISTBOX_H_ 145