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