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_SCROLLBAR_H_ 8 #define XFA_FWL_CFWL_SCROLLBAR_H_ 9 10 #include <memory> 11 12 #include "core/fxcrt/cfx_timer.h" 13 #include "core/fxcrt/fx_system.h" 14 #include "core/fxcrt/unowned_ptr.h" 15 #include "xfa/fwl/cfwl_eventscroll.h" 16 #include "xfa/fwl/cfwl_widget.h" 17 #include "xfa/fwl/cfwl_widgetproperties.h" 18 19 class CFWL_Widget; 20 21 #define FWL_STYLEEXT_SCB_Horz (0L << 0) 22 #define FWL_STYLEEXT_SCB_Vert (1L << 0) 23 24 class CFWL_ScrollBar final : public CFWL_Widget, 25 public CFX_Timer::CallbackIface { 26 public: 27 CFWL_ScrollBar(const CFWL_App* app, 28 std::unique_ptr<CFWL_WidgetProperties> properties, 29 CFWL_Widget* pOuter); 30 ~CFWL_ScrollBar() override; 31 32 // CFWL_Widget: 33 FWL_Type GetClassID() const override; 34 void Update() override; 35 void DrawWidget(CXFA_Graphics* pGraphics, const CFX_Matrix& matrix) override; 36 void OnProcessMessage(CFWL_Message* pMessage) override; 37 void OnDrawWidget(CXFA_Graphics* pGraphics, 38 const CFX_Matrix& matrix) override; 39 40 // CFX_Timer::CallbackIface: 41 void OnTimerFired() override; 42 GetRange(float * fMin,float * fMax)43 void GetRange(float* fMin, float* fMax) const { 44 ASSERT(fMin); 45 ASSERT(fMax); 46 *fMin = m_fRangeMin; 47 *fMax = m_fRangeMax; 48 } SetRange(float fMin,float fMax)49 void SetRange(float fMin, float fMax) { 50 m_fRangeMin = fMin; 51 m_fRangeMax = fMax; 52 } GetPageSize()53 float GetPageSize() const { return m_fPageSize; } SetPageSize(float fPageSize)54 void SetPageSize(float fPageSize) { m_fPageSize = fPageSize; } GetStepSize()55 float GetStepSize() const { return m_fStepSize; } SetStepSize(float fStepSize)56 void SetStepSize(float fStepSize) { m_fStepSize = fStepSize; } GetPos()57 float GetPos() const { return m_fPos; } SetPos(float fPos)58 void SetPos(float fPos) { m_fPos = fPos; } 59 void SetTrackPos(float fTrackPos); 60 61 private: IsVertical()62 bool IsVertical() const { 63 return !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_SCB_Vert); 64 } 65 void DrawTrack(CXFA_Graphics* pGraphics, 66 IFWL_ThemeProvider* pTheme, 67 bool bLower, 68 const CFX_Matrix* pMatrix); 69 void DrawArrowBtn(CXFA_Graphics* pGraphics, 70 IFWL_ThemeProvider* pTheme, 71 bool bMinBtn, 72 const CFX_Matrix* pMatrix); 73 void DrawThumb(CXFA_Graphics* pGraphics, 74 IFWL_ThemeProvider* pTheme, 75 const CFX_Matrix* pMatrix); 76 void Layout(); 77 void CalcButtonLen(); 78 CFX_RectF CalcMinButtonRect(); 79 CFX_RectF CalcMaxButtonRect(); 80 CFX_RectF CalcThumbButtonRect(const CFX_RectF& rtThumbRect); 81 CFX_RectF CalcMinTrackRect(const CFX_RectF& rtMinRect); 82 CFX_RectF CalcMaxTrackRect(const CFX_RectF& rtMaxRect); 83 float GetTrackPointPos(const CFX_PointF& point); 84 85 bool SendEvent(); 86 bool OnScroll(CFWL_EventScroll::Code dwCode, float fPos); 87 void OnLButtonDown(const CFX_PointF& point); 88 void OnLButtonUp(const CFX_PointF& point); 89 void OnMouseMove(const CFX_PointF& point); 90 void OnMouseLeave(); 91 void OnMouseWheel(const CFX_PointF& delta); 92 bool DoScroll(CFWL_EventScroll::Code dwCode, float fPos); 93 void DoMouseDown(int32_t iItem, 94 const CFX_RectF& rtItem, 95 int32_t& iState, 96 const CFX_PointF& point); 97 void DoMouseUp(int32_t iItem, 98 const CFX_RectF& rtItem, 99 int32_t& iState, 100 const CFX_PointF& point); 101 void DoMouseMove(int32_t iItem, 102 const CFX_RectF& rtItem, 103 int32_t& iState, 104 const CFX_PointF& point); 105 void DoMouseLeave(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState); 106 void DoMouseHover(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState); 107 108 float m_fRangeMin = 0.0f; 109 float m_fRangeMax = -1.0f; 110 float m_fPageSize = 0.0f; 111 float m_fStepSize = 0.0f; 112 float m_fPos = 0.0f; 113 float m_fTrackPos = 0.0f; 114 int32_t m_iMinButtonState = CFWL_PartState_Normal; 115 int32_t m_iMaxButtonState = CFWL_PartState_Normal; 116 int32_t m_iThumbButtonState = CFWL_PartState_Normal; 117 int32_t m_iMinTrackState = CFWL_PartState_Normal; 118 int32_t m_iMaxTrackState = CFWL_PartState_Normal; 119 float m_fLastTrackPos = 0.0f; 120 CFX_PointF m_cpTrackPoint; 121 int32_t m_iMouseWheel = 0; 122 float m_fButtonLen = 0.0f; 123 bool m_bMouseDown = false; 124 bool m_bMinSize = false; 125 CFX_RectF m_rtClient; 126 CFX_RectF m_rtThumb; 127 CFX_RectF m_rtMinBtn; 128 CFX_RectF m_rtMaxBtn; 129 CFX_RectF m_rtMinTrack; 130 CFX_RectF m_rtMaxTrack; 131 std::unique_ptr<CFX_Timer> m_pTimer; 132 }; 133 134 #endif // XFA_FWL_CFWL_SCROLLBAR_H_ 135