| // Copyright 2014 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef XFA_FWL_CFWL_LISTBOX_H_ |
| #define XFA_FWL_CFWL_LISTBOX_H_ |
| |
| #include <memory> |
| #include <vector> |
| |
| #include "xfa/fwl/cfwl_edit.h" |
| #include "xfa/fwl/cfwl_event.h" |
| #include "xfa/fwl/cfwl_listbox.h" |
| #include "xfa/fwl/cfwl_widget.h" |
| #include "xfa/fwl/fwl_widgetdef.h" |
| |
| #define FWL_STYLEEXT_LTB_MultiSelection (1L << 0) |
| #define FWL_STYLEEXT_LTB_LeftAlign (0L << 4) |
| #define FWL_STYLEEXT_LTB_CenterAlign (1L << 4) |
| #define FWL_STYLEEXT_LTB_RightAlign (2L << 4) |
| #define FWL_STYLEEXT_LTB_AlignMask (3L << 4) |
| #define FWL_STYLEEXT_LTB_ShowScrollBarFocus (1L << 10) |
| |
| class CFWL_MessageMouse; |
| class CFWL_MessageMouseWheel; |
| |
| class CFWL_ListBox : public CFWL_Widget { |
| public: |
| class Item { |
| public: |
| explicit Item(const WideString& text); |
| ~Item(); |
| |
| bool IsSelected() const { return m_bIsSelected; } |
| void SetSelected(bool enable) { m_bIsSelected = enable; } |
| bool IsFocused() const { return m_bIsFocused; } |
| void SetFocused(bool enable) { m_bIsFocused = enable; } |
| CFX_RectF GetRect() const { return m_ItemRect; } |
| void SetRect(const CFX_RectF& rect) { m_ItemRect = rect; } |
| WideString GetText() const { return m_wsText; } |
| |
| private: |
| bool m_bIsSelected = false; |
| bool m_bIsFocused = false; |
| CFX_RectF m_ItemRect; |
| const WideString m_wsText; |
| }; |
| |
| CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED; |
| ~CFWL_ListBox() override; |
| |
| // CFWL_Widget: |
| void Trace(cppgc::Visitor* visitor) const override; |
| FWL_Type GetClassID() const override; |
| void Update() override; |
| FWL_WidgetHit HitTest(const CFX_PointF& point) override; |
| void DrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) override; |
| void OnProcessMessage(CFWL_Message* pMessage) override; |
| void OnProcessEvent(CFWL_Event* pEvent) override; |
| void OnDrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) override; |
| |
| int32_t CountItems(const CFWL_Widget* pWidget) const; |
| Item* GetItem(const CFWL_Widget* pWidget, int32_t nIndex) const; |
| int32_t GetItemIndex(CFWL_Widget* pWidget, Item* pItem); |
| Item* AddString(const WideString& wsAdd); |
| void RemoveAt(int32_t iIndex); |
| void DeleteString(Item* pItem); |
| void DeleteAll(); |
| int32_t CountSelItems(); |
| Item* GetSelItem(int32_t nIndexSel); |
| int32_t GetSelIndex(int32_t nIndex); |
| void SetSelItem(Item* hItem, bool bSelect); |
| float GetItemHeight() const { return m_fItemHeight; } |
| float CalcItemHeight(); |
| |
| protected: |
| CFWL_ListBox(CFWL_App* pApp, |
| const Properties& properties, |
| CFWL_Widget* pOuter); |
| |
| Item* GetListItem(Item* hItem, XFA_FWL_VKEYCODE dwKeyCode); |
| void SetSelection(Item* hStart, Item* hEnd, bool bSelected); |
| Item* GetItemAtPoint(const CFX_PointF& point); |
| bool ScrollToVisible(Item* hItem); |
| void InitVerticalScrollBar(); |
| void InitHorizontalScrollBar(); |
| bool IsShowVertScrollBar() const; |
| bool IsShowHorzScrollBar() const; |
| bool ScrollBarPropertiesPresent() const; |
| CFWL_ScrollBar* GetVertScrollBar() const { return m_pVertScrollBar; } |
| const CFX_RectF& GetRTClient() const { return m_ClientRect; } |
| |
| private: |
| bool IsMultiSelection() const; |
| void ClearSelection(); |
| void SelectAll(); |
| Item* GetFocusedItem(); |
| void SetFocusItem(Item* hItem); |
| void DrawBkground(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); |
| void DrawItems(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); |
| void DrawItem(CFGAS_GEGraphics* pGraphics, |
| Item* hItem, |
| int32_t Index, |
| const CFX_RectF& rtItem, |
| const CFX_Matrix& pMatrix); |
| void DrawStatic(CFGAS_GEGraphics* pGraphics); |
| CFX_SizeF CalcSize(); |
| void UpdateItemSize(Item* hItem, |
| CFX_SizeF& size, |
| float fWidth, |
| float fHeight) const; |
| float GetMaxTextWidth(); |
| float GetScrollWidth(); |
| |
| void OnFocusGained(); |
| void OnFocusLost(); |
| void OnLButtonDown(CFWL_MessageMouse* pMsg); |
| void OnLButtonUp(CFWL_MessageMouse* pMsg); |
| void OnMouseWheel(CFWL_MessageMouseWheel* pMsg); |
| void OnKeyDown(CFWL_MessageKey* pMsg); |
| void OnVK(Item* hItem, bool bShift, bool bCtrl); |
| bool OnScroll(CFWL_ScrollBar* pScrollBar, |
| CFWL_EventScroll::Code dwCode, |
| float fPos); |
| |
| CFX_RectF m_ClientRect; |
| CFX_RectF m_StaticRect; |
| CFX_RectF m_ContentRect; |
| cppgc::Member<CFWL_ScrollBar> m_pHorzScrollBar; |
| cppgc::Member<CFWL_ScrollBar> m_pVertScrollBar; |
| FDE_TextStyle m_TTOStyles; |
| FDE_TextAlignment m_iTTOAligns = FDE_TextAlignment::kTopLeft; |
| bool m_bLButtonDown = false; |
| float m_fItemHeight = 0.0f; |
| float m_fScorllBarWidth = 0.0f; |
| Item* m_hAnchor = nullptr; |
| std::vector<std::unique_ptr<Item>> m_ItemArray; |
| }; |
| |
| #endif // XFA_FWL_CFWL_LISTBOX_H_ |