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// 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_CORE_IFWL_SCROLLBAR_H_
#define XFA_FWL_CORE_IFWL_SCROLLBAR_H_
#include "core/fxcrt/fx_system.h"
#include "xfa/fwl/core/cfwl_widgetimpproperties.h"
#include "xfa/fwl/core/fwl_error.h"
#include "xfa/fwl/core/ifwl_dataprovider.h"
#include "xfa/fwl/core/ifwl_timer.h"
#include "xfa/fwl/core/ifwl_widget.h"
class CFWL_ScrollBarImpDelegate;
class CFWL_WidgetImpProperties;
class IFWL_Widget;
#define FWL_CLASS_ScrollBar L"FWL_SCROLLBAR"
#define FWL_STYLEEXT_SCB_Horz (0L << 0)
#define FWL_STYLEEXT_SCB_Vert (1L << 0)
enum FWL_SCBCODE {
FWL_SCBCODE_None = 1,
FWL_SCBCODE_Min,
FWL_SCBCODE_Max,
FWL_SCBCODE_PageBackward,
FWL_SCBCODE_PageForward,
FWL_SCBCODE_StepBackward,
FWL_SCBCODE_StepForward,
FWL_SCBCODE_Pos,
FWL_SCBCODE_TrackPos,
FWL_SCBCODE_EndScroll,
};
class IFWL_ScrollBarDP : public IFWL_DataProvider {};
class IFWL_ScrollBar : public IFWL_Widget, public IFWL_Timer {
public:
IFWL_ScrollBar(const CFWL_WidgetImpProperties& properties,
IFWL_Widget* pOuter);
~IFWL_ScrollBar() override;
// IFWL_Widget
FWL_Error GetClassName(CFX_WideString& wsClass) const override;
FWL_Type GetClassID() const override;
FWL_Error Initialize() override;
FWL_Error Finalize() override;
FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
FWL_Error Update() override;
FWL_Error DrawWidget(CFX_Graphics* pGraphics,
const CFX_Matrix* pMatrix = nullptr) override;
// IFWL_Timer
void Run(IFWL_TimerInfo* pTimerInfo) override;
FX_BOOL IsVertical();
FWL_Error GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax);
FWL_Error SetRange(FX_FLOAT fMin, FX_FLOAT fMax);
FX_FLOAT GetPageSize();
FWL_Error SetPageSize(FX_FLOAT fPageSize);
FX_FLOAT GetStepSize();
FWL_Error SetStepSize(FX_FLOAT fStepSize);
FX_FLOAT GetPos();
FWL_Error SetPos(FX_FLOAT fPos);
FX_FLOAT GetTrackPos();
FWL_Error SetTrackPos(FX_FLOAT fTrackPos);
FX_BOOL DoScroll(uint32_t dwCode, FX_FLOAT fPos = 0.0f);
FWL_Error SetOuter(IFWL_Widget* pOuter);
protected:
friend class CFWL_ScrollBarImpDelegate;
void DrawTrack(CFX_Graphics* pGraphics,
IFWL_ThemeProvider* pTheme,
FX_BOOL bLower = TRUE,
const CFX_Matrix* pMatrix = nullptr);
void DrawArrowBtn(CFX_Graphics* pGraphics,
IFWL_ThemeProvider* pTheme,
FX_BOOL bMinBtn = TRUE,
const CFX_Matrix* pMatrix = nullptr);
void DrawThumb(CFX_Graphics* pGraphics,
IFWL_ThemeProvider* pTheme,
const CFX_Matrix* pMatrix = nullptr);
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);
void GetTrackRect(CFX_RectF& rect, FX_BOOL bLower = TRUE);
FX_BOOL SendEvent();
FX_BOOL OnScroll(uint32_t dwCode, FX_FLOAT fPos);
IFWL_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;
FX_BOOL m_bTrackMouseLeave;
FX_BOOL m_bMouseHover;
FX_BOOL m_bMouseDown;
FX_BOOL m_bRepaintThumb;
FX_FLOAT m_fButtonLen;
FX_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_BOOL m_bCustomLayout;
FX_FLOAT m_fMinThumb;
protected:
IFWL_ScrollBar();
};
class CFWL_ScrollBarImpDelegate : public CFWL_WidgetImpDelegate {
public:
CFWL_ScrollBarImpDelegate(IFWL_ScrollBar* pOwner);
void OnProcessMessage(CFWL_Message* pMessage) override;
void OnDrawWidget(CFX_Graphics* pGraphics,
const CFX_Matrix* pMatrix = nullptr) override;
protected:
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);
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);
IFWL_ScrollBar* m_pOwner;
};
#endif // XFA_FWL_CORE_IFWL_SCROLLBAR_H_
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