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_SCROLLBAR_H_ 8 #define XFA_FWL_CFWL_SCROLLBAR_H_ 9 10 #include <stdint.h> 11 12 #include <memory> 13 14 #include "core/fxcrt/cfx_timer.h" 15 #include "core/fxcrt/check.h" 16 #include "xfa/fwl/cfwl_eventscroll.h" 17 #include "xfa/fwl/cfwl_themepart.h" 18 #include "xfa/fwl/cfwl_widget.h" 19 20 namespace pdfium { 21 22 #define FWL_STYLEEXT_SCB_Horz (0L << 0) 23 #define FWL_STYLEEXT_SCB_Vert (1L << 0) 24 25 class CFWL_ScrollBar final : public CFWL_Widget, 26 public CFX_Timer::CallbackIface { 27 public: 28 CONSTRUCT_VIA_MAKE_GARBAGE_COLLECTED; 29 ~CFWL_ScrollBar() override; 30 31 // CFWL_Widget: 32 FWL_Type GetClassID() const override; 33 void Update() override; 34 void DrawWidget(CFGAS_GEGraphics* pGraphics, 35 const CFX_Matrix& matrix) override; 36 void OnProcessMessage(CFWL_Message* pMessage) override; 37 void OnDrawWidget(CFGAS_GEGraphics* 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 *fMin = m_fRangeMin; 45 *fMax = m_fRangeMax; 46 } SetRange(float fMin,float fMax)47 void SetRange(float fMin, float fMax) { 48 m_fRangeMin = fMin; 49 m_fRangeMax = fMax; 50 } GetPageSize()51 float GetPageSize() const { return m_fPageSize; } SetPageSize(float fPageSize)52 void SetPageSize(float fPageSize) { m_fPageSize = fPageSize; } GetStepSize()53 float GetStepSize() const { return m_fStepSize; } SetStepSize(float fStepSize)54 void SetStepSize(float fStepSize) { m_fStepSize = fStepSize; } GetPos()55 float GetPos() const { return m_fPos; } SetPos(float fPos)56 void SetPos(float fPos) { m_fPos = fPos; } 57 void SetTrackPos(float fTrackPos); 58 59 private: 60 CFWL_ScrollBar(CFWL_App* app, 61 const Properties& properties, 62 CFWL_Widget* pOuter); 63 IsVertical()64 bool IsVertical() const { return !!(GetStyleExts() & FWL_STYLEEXT_SCB_Vert); } 65 void DrawUpperTrack(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 66 void DrawLowerTrack(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 67 void DrawMaxArrowBtn(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 68 void DrawMinArrowBtn(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 69 void DrawThumb(CFGAS_GEGraphics* pGraphics, const CFX_Matrix& mtMatrix); 70 void Layout(); 71 void CalcButtonLen(); 72 CFX_RectF CalcMinButtonRect(); 73 CFX_RectF CalcMaxButtonRect(); 74 CFX_RectF CalcThumbButtonRect(const CFX_RectF& rtThumbRect); 75 CFX_RectF CalcMinTrackRect(const CFX_RectF& rtMinRect); 76 CFX_RectF CalcMaxTrackRect(const CFX_RectF& rtMaxRect); 77 float GetTrackPointPos(const CFX_PointF& point); 78 79 bool SendEvent(); 80 bool OnScroll(CFWL_EventScroll::Code dwCode, float fPos); 81 void OnLButtonDown(const CFX_PointF& point); 82 void OnLButtonUp(const CFX_PointF& point); 83 void OnMouseMove(const CFX_PointF& point); 84 void OnMouseLeave(); 85 void OnMouseWheel(const CFX_Vector& delta); 86 bool DoScroll(CFWL_EventScroll::Code dwCode, float fPos); 87 void DoMouseDown(int32_t iItem, 88 const CFX_RectF& rtItem, 89 CFWL_PartState* pState, 90 const CFX_PointF& point); 91 void DoMouseUp(int32_t iItem, 92 const CFX_RectF& rtItem, 93 CFWL_PartState* pState, 94 const CFX_PointF& point); 95 void DoMouseMove(int32_t iItem, 96 const CFX_RectF& rtItem, 97 CFWL_PartState* pState, 98 const CFX_PointF& point); 99 void DoMouseLeave(int32_t iItem, 100 const CFX_RectF& rtItem, 101 CFWL_PartState* pState); 102 void DoMouseHover(int32_t iItem, 103 const CFX_RectF& rtItem, 104 CFWL_PartState* pState); 105 106 float m_fRangeMin = 0.0f; 107 float m_fRangeMax = -1.0f; 108 float m_fPageSize = 0.0f; 109 float m_fStepSize = 0.0f; 110 float m_fPos = 0.0f; 111 float m_fTrackPos = 0.0f; 112 CFWL_PartState m_iMinButtonState = CFWL_PartState::kNormal; 113 CFWL_PartState m_iMaxButtonState = CFWL_PartState::kNormal; 114 CFWL_PartState m_iThumbButtonState = CFWL_PartState::kNormal; 115 CFWL_PartState m_iMinTrackState = CFWL_PartState::kNormal; 116 CFWL_PartState m_iMaxTrackState = CFWL_PartState::kNormal; 117 float m_fLastTrackPos = 0.0f; 118 CFX_PointF m_cpTrackPoint; 119 int32_t m_iMouseWheel = 0; 120 float m_fButtonLen = 0.0f; 121 bool m_bMouseDown = false; 122 bool m_bMinSize = false; 123 CFX_RectF m_ClientRect; 124 CFX_RectF m_ThumbRect; 125 CFX_RectF m_MinBtnRect; 126 CFX_RectF m_MaxBtnRect; 127 CFX_RectF m_MinTrackRect; 128 CFX_RectF m_MaxTrackRect; 129 std::unique_ptr<CFX_Timer> m_pTimer; 130 }; 131 132 } // namespace pdfium 133 134 // TODO(crbug.com/42271761): Remove. 135 using pdfium::CFWL_ScrollBar; 136 137 #endif // XFA_FWL_CFWL_SCROLLBAR_H_ 138