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      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_WIDGETMGR_H_
      8 #define XFA_FWL_CFWL_WIDGETMGR_H_
      9 
     10 #include <map>
     11 #include <memory>
     12 #include <vector>
     13 
     14 #include "core/fxcrt/fx_system.h"
     15 #include "xfa/fwl/ifwl_widgetmgrdelegate.h"
     16 #include "xfa/fxgraphics/cfx_graphics.h"
     17 
     18 #define FWL_WGTMGR_DisableForm 0x00000002
     19 
     20 class CFWL_Message;
     21 class CXFA_FFApp;
     22 class CXFA_FWLAdapterWidgetMgr;
     23 class CFX_Graphics;
     24 class CFX_Matrix;
     25 class CFWL_Widget;
     26 
     27 class CFWL_WidgetMgr : public CFWL_WidgetMgrDelegate {
     28  public:
     29   explicit CFWL_WidgetMgr(CXFA_FFApp* pAdapterNative);
     30   ~CFWL_WidgetMgr();
     31 
     32   // CFWL_WidgetMgrDelegate
     33   void OnSetCapability(uint32_t dwCapability) override;
     34   void OnProcessMessageToForm(CFWL_Message* pMessage) override;
     35   void OnDrawWidget(CFWL_Widget* pWidget,
     36                     CFX_Graphics* pGraphics,
     37                     const CFX_Matrix* pMatrix) override;
     38 
     39   CFWL_Widget* GetParentWidget(CFWL_Widget* pWidget) const;
     40   CFWL_Widget* GetOwnerWidget(CFWL_Widget* pWidget) const;
     41   CFWL_Widget* GetNextSiblingWidget(CFWL_Widget* pWidget) const;
     42   CFWL_Widget* GetFirstChildWidget(CFWL_Widget* pWidget) const;
     43   CFWL_Widget* GetSystemFormWidget(CFWL_Widget* pWidget) const;
     44 
     45   void RepaintWidget(CFWL_Widget* pWidget, const CFX_RectF& pRect);
     46 
     47   void InsertWidget(CFWL_Widget* pParent, CFWL_Widget* pChild);
     48   void RemoveWidget(CFWL_Widget* pWidget);
     49   void SetOwner(CFWL_Widget* pOwner, CFWL_Widget* pOwned);
     50   void SetParent(CFWL_Widget* pParent, CFWL_Widget* pChild);
     51 
     52   CFWL_Widget* GetWidgetAtPoint(CFWL_Widget* pParent,
     53                                 const CFX_PointF& point) const;
     54   CFWL_Widget* NextTab(CFWL_Widget* parent, CFWL_Widget* focus, bool& bFind);
     55 
     56   std::vector<CFWL_Widget*> GetSameGroupRadioButton(
     57       CFWL_Widget* pRadioButton) const;
     58 
     59   CFWL_Widget* GetDefaultButton(CFWL_Widget* pParent) const;
     60   void AddRedrawCounts(CFWL_Widget* pWidget);
     61 
     62   bool IsFormDisabled() const {
     63     return !!(m_dwCapability & FWL_WGTMGR_DisableForm);
     64   }
     65 
     66   void GetAdapterPopupPos(CFWL_Widget* pWidget,
     67                           FX_FLOAT fMinHeight,
     68                           FX_FLOAT fMaxHeight,
     69                           const CFX_RectF& rtAnchor,
     70                           CFX_RectF& rtPopup) const;
     71 
     72  private:
     73   class Item {
     74    public:
     75     Item();
     76     explicit Item(CFWL_Widget* widget);
     77     ~Item();
     78 
     79     Item* pParent;
     80     Item* pOwner;
     81     Item* pChild;
     82     Item* pPrevious;
     83     Item* pNext;
     84     CFWL_Widget* const pWidget;
     85     std::unique_ptr<CFX_Graphics> pOffscreen;
     86     int32_t iRedrawCounter;
     87 #if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
     88     bool bOutsideChanged;
     89 #endif
     90   };
     91 
     92   CFWL_Widget* GetFirstSiblingWidget(CFWL_Widget* pWidget) const;
     93   CFWL_Widget* GetPriorSiblingWidget(CFWL_Widget* pWidget) const;
     94   CFWL_Widget* GetLastChildWidget(CFWL_Widget* pWidget) const;
     95   Item* GetWidgetMgrItem(CFWL_Widget* pWidget) const;
     96 
     97   void AppendWidget(CFWL_Widget* pWidget);
     98 
     99   int32_t CountRadioButtonGroup(CFWL_Widget* pFirst) const;
    100   CFWL_Widget* GetRadioButtonGroupHeader(CFWL_Widget* pRadioButton) const;
    101 
    102   void ResetRedrawCounts(CFWL_Widget* pWidget);
    103 
    104   void DrawChild(CFWL_Widget* pParent,
    105                  const CFX_RectF& rtClip,
    106                  CFX_Graphics* pGraphics,
    107                  const CFX_Matrix* pMatrix);
    108   CFX_Graphics* DrawWidgetBefore(CFWL_Widget* pWidget,
    109                                  CFX_Graphics* pGraphics,
    110                                  const CFX_Matrix* pMatrix);
    111   bool IsNeedRepaint(CFWL_Widget* pWidget,
    112                      CFX_Matrix* pMatrix,
    113                      const CFX_RectF& rtDirty);
    114 
    115   bool IsAbleNative(CFWL_Widget* pWidget) const;
    116 
    117   uint32_t m_dwCapability;
    118   std::map<CFWL_Widget*, std::unique_ptr<Item>> m_mapWidgetItem;
    119   CXFA_FWLAdapterWidgetMgr* const m_pAdapter;
    120 #if (_FX_OS_ == _FX_WIN32_DESKTOP_) || (_FX_OS_ == _FX_WIN64_)
    121   CFX_RectF m_rtScreen;
    122 #endif
    123 };
    124 
    125 #endif  // XFA_FWL_CFWL_WIDGETMGR_H_
    126