1 files changed, 148 insertions, 0 deletions
diff --git a/xfa/fwl/cfwl_scrollbar.h b/xfa/fwl/cfwl_scrollbar.h
new file mode 100644
index 0000000000..808975ed81
--- /dev/null
+++ b/xfa/fwl/cfwl_scrollbar.h
@@ -0,0 +1,148 @@
+// 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_SCROLLBAR_H_
+#define XFA_FWL_CFWL_SCROLLBAR_H_
+
+#include <memory>
+
+#include "core/fxcrt/fx_system.h"
+#include "xfa/fwl/cfwl_eventscroll.h"
+#include "xfa/fwl/cfwl_timer.h"
+#include "xfa/fwl/cfwl_widget.h"
+#include "xfa/fwl/cfwl_widgetproperties.h"
+
+class CFWL_Widget;
+
+#define FWL_STYLEEXT_SCB_Horz (0L << 0)
+#define FWL_STYLEEXT_SCB_Vert (1L << 0)
+
+class CFWL_ScrollBar : public CFWL_Widget {
+ public:
+  CFWL_ScrollBar(const CFWL_App* app,
+                 std::unique_ptr<CFWL_WidgetProperties> properties,
+                 CFWL_Widget* pOuter);
+  ~CFWL_ScrollBar() override;
+
+  // CFWL_Widget
+  FWL_Type GetClassID() const override;
+  void Update() override;
+  void DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) override;
+  void OnProcessMessage(CFWL_Message* pMessage) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix) override;
+
+  void GetRange(FX_FLOAT* fMin, FX_FLOAT* fMax) const {
+    ASSERT(fMin);
+    ASSERT(fMax);
+    *fMin = m_fRangeMin;
+    *fMax = m_fRangeMax;
+  }
+  void SetRange(FX_FLOAT fMin, FX_FLOAT fMax) {
+    m_fRangeMin = fMin;
+    m_fRangeMax = fMax;
+  }
+  FX_FLOAT GetPageSize() const { return m_fPageSize; }
+  void SetPageSize(FX_FLOAT fPageSize) { m_fPageSize = fPageSize; }
+  FX_FLOAT GetStepSize() const { return m_fStepSize; }
+  void SetStepSize(FX_FLOAT fStepSize) { m_fStepSize = fStepSize; }
+  FX_FLOAT GetPos() const { return m_fPos; }
+  void SetPos(FX_FLOAT fPos) { m_fPos = fPos; }
+  void SetTrackPos(FX_FLOAT fTrackPos);
+
+ private:
+  class Timer : public CFWL_Timer {
+   public:
+    explicit Timer(CFWL_ScrollBar* pToolTip);
+    ~Timer() override {}
+
+    void Run(CFWL_TimerInfo* pTimerInfo) override;
+  };
+  friend class CFWL_ScrollBar::Timer;
+
+  bool IsVertical() const {
+    return !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_SCB_Vert);
+  }
+  void DrawTrack(CFX_Graphics* pGraphics,
+                 IFWL_ThemeProvider* pTheme,
+                 bool bLower,
+                 const CFX_Matrix* pMatrix);
+  void DrawArrowBtn(CFX_Graphics* pGraphics,
+                    IFWL_ThemeProvider* pTheme,
+                    bool bMinBtn,
+                    const CFX_Matrix* pMatrix);
+  void DrawThumb(CFX_Graphics* pGraphics,
+                 IFWL_ThemeProvider* pTheme,
+                 const CFX_Matrix* pMatrix);
+  void Layout();
+  void CalcButtonLen();
+  void CalcMinButtonRect(CFX_RectF& rect);
+  void CalcMaxButtonRect(CFX_RectF& rect);
+  void CalcThumbButtonRect(CFX_RectF& rect);
+  void CalcMinTrackRect(CFX_RectF& rect);
+  void CalcMaxTrackRect(CFX_RectF& rect);
+  FX_FLOAT GetTrackPointPos(FX_FLOAT fx, FX_FLOAT fy);
+
+  bool SendEvent();
+  bool OnScroll(CFWL_EventScroll::Code dwCode, FX_FLOAT fPos);
+  void OnLButtonDown(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
+  void OnLButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
+  void OnMouseMove(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy);
+  void OnMouseLeave();
+  void OnMouseWheel(FX_FLOAT fx,
+                    FX_FLOAT fy,
+                    uint32_t dwFlags,
+                    FX_FLOAT fDeltaX,
+                    FX_FLOAT fDeltaY);
+  bool DoScroll(CFWL_EventScroll::Code dwCode, FX_FLOAT fPos);
+  void DoMouseDown(int32_t iItem,
+                   const CFX_RectF& rtItem,
+                   int32_t& iState,
+                   FX_FLOAT fx,
+                   FX_FLOAT fy);
+  void DoMouseUp(int32_t iItem,
+                 const CFX_RectF& rtItem,
+                 int32_t& iState,
+                 FX_FLOAT fx,
+                 FX_FLOAT fy);
+  void DoMouseMove(int32_t iItem,
+                   const CFX_RectF& rtItem,
+                   int32_t& iState,
+                   FX_FLOAT fx,
+                   FX_FLOAT fy);
+  void DoMouseLeave(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState);
+  void DoMouseHover(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState);
+
+  CFWL_TimerInfo* m_pTimerInfo;
+  FX_FLOAT m_fRangeMin;
+  FX_FLOAT m_fRangeMax;
+  FX_FLOAT m_fPageSize;
+  FX_FLOAT m_fStepSize;
+  FX_FLOAT m_fPos;
+  FX_FLOAT m_fTrackPos;
+  int32_t m_iMinButtonState;
+  int32_t m_iMaxButtonState;
+  int32_t m_iThumbButtonState;
+  int32_t m_iMinTrackState;
+  int32_t m_iMaxTrackState;
+  FX_FLOAT m_fLastTrackPos;
+  FX_FLOAT m_cpTrackPointX;
+  FX_FLOAT m_cpTrackPointY;
+  int32_t m_iMouseWheel;
+  bool m_bMouseDown;
+  FX_FLOAT m_fButtonLen;
+  bool m_bMinSize;
+  CFX_RectF m_rtClient;
+  CFX_RectF m_rtThumb;
+  CFX_RectF m_rtMinBtn;
+  CFX_RectF m_rtMaxBtn;
+  CFX_RectF m_rtMinTrack;
+  CFX_RectF m_rtMaxTrack;
+  FX_FLOAT m_fMinThumb;
+  CFWL_ScrollBar::Timer m_Timer;
+};
+
+#endif  // XFA_FWL_CFWL_SCROLLBAR_H_