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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 FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
#define FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
#include "fpdfsdk/pdfwindow/PWL_Wnd.h"
class CPWL_SBButton;
class CPWL_ScrollBar;
struct PWL_SCROLL_INFO {
public:
PWL_SCROLL_INFO()
: fContentMin(0.0f),
fContentMax(0.0f),
fPlateWidth(0.0f),
fBigStep(0.0f),
fSmallStep(0.0f) {}
FX_FLOAT fContentMin;
FX_FLOAT fContentMax;
FX_FLOAT fPlateWidth;
FX_FLOAT fBigStep;
FX_FLOAT fSmallStep;
};
enum PWL_SCROLLBAR_TYPE { SBT_HSCROLL, SBT_VSCROLL };
enum PWL_SBBUTTON_TYPE { PSBT_MIN, PSBT_MAX, PSBT_POS };
class CPWL_SBButton : public CPWL_Wnd {
public:
CPWL_SBButton(PWL_SCROLLBAR_TYPE eScrollBarType,
PWL_SBBUTTON_TYPE eButtonType);
~CPWL_SBButton() override;
// CPWL_Wnd
CFX_ByteString GetClassName() const override;
void OnCreate(PWL_CREATEPARAM& cp) override;
void GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) override;
void DrawThisAppearance(CFX_RenderDevice* pDevice,
CFX_Matrix* pUser2Device) override;
FX_BOOL OnLButtonDown(const CFX_FloatPoint& point, FX_DWORD nFlag) override;
FX_BOOL OnLButtonUp(const CFX_FloatPoint& point, FX_DWORD nFlag) override;
FX_BOOL OnMouseMove(const CFX_FloatPoint& point, FX_DWORD nFlag) override;
protected:
PWL_SCROLLBAR_TYPE m_eScrollBarType;
PWL_SBBUTTON_TYPE m_eSBButtonType;
FX_BOOL m_bMouseDown;
};
struct PWL_FLOATRANGE {
public:
PWL_FLOATRANGE();
PWL_FLOATRANGE(FX_FLOAT min, FX_FLOAT max);
void Default();
void Set(FX_FLOAT min, FX_FLOAT max);
FX_BOOL In(FX_FLOAT x) const;
FX_FLOAT GetWidth() const;
FX_FLOAT fMin, fMax;
};
struct PWL_SCROLL_PRIVATEDATA {
public:
PWL_SCROLL_PRIVATEDATA();
void Default();
void SetScrollRange(FX_FLOAT min, FX_FLOAT max);
void SetClientWidth(FX_FLOAT width);
void SetSmallStep(FX_FLOAT step);
void SetBigStep(FX_FLOAT step);
FX_BOOL SetPos(FX_FLOAT pos);
void AddSmall();
void SubSmall();
void AddBig();
void SubBig();
PWL_FLOATRANGE ScrollRange;
FX_FLOAT fClientWidth;
FX_FLOAT fScrollPos;
FX_FLOAT fBigStep;
FX_FLOAT fSmallStep;
};
class CPWL_ScrollBar : public CPWL_Wnd {
public:
CPWL_ScrollBar(PWL_SCROLLBAR_TYPE sbType = SBT_HSCROLL);
~CPWL_ScrollBar() override;
// CPWL_Wnd
CFX_ByteString GetClassName() const override;
void OnCreate(PWL_CREATEPARAM& cp) override;
void RePosChildWnd() override;
void GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) override;
void DrawThisAppearance(CFX_RenderDevice* pDevice,
CFX_Matrix* pUser2Device) override;
FX_BOOL OnLButtonDown(const CFX_FloatPoint& point, FX_DWORD nFlag) override;
FX_BOOL OnLButtonUp(const CFX_FloatPoint& point, FX_DWORD nFlag) override;
void OnNotify(CPWL_Wnd* pWnd,
FX_DWORD msg,
intptr_t wParam = 0,
intptr_t lParam = 0) override;
void CreateChildWnd(const PWL_CREATEPARAM& cp) override;
void TimerProc() override;
FX_FLOAT GetScrollBarWidth() const;
PWL_SCROLLBAR_TYPE GetScrollBarType() const { return m_sbType; }
void SetNotifyForever(FX_BOOL bForever) { m_bNotifyForever = bForever; }
protected:
void SetScrollRange(FX_FLOAT fMin, FX_FLOAT fMax, FX_FLOAT fClientWidth);
void SetScrollPos(FX_FLOAT fPos);
void MovePosButton(FX_BOOL bRefresh);
void SetScrollStep(FX_FLOAT fBigStep, FX_FLOAT fSmallStep);
void NotifyScrollWindow();
CFX_FloatRect GetScrollArea() const;
private:
void CreateButtons(const PWL_CREATEPARAM& cp);
void OnMinButtonLBDown(const CFX_FloatPoint& point);
void OnMinButtonLBUp(const CFX_FloatPoint& point);
void OnMinButtonMouseMove(const CFX_FloatPoint& point);
void OnMaxButtonLBDown(const CFX_FloatPoint& point);
void OnMaxButtonLBUp(const CFX_FloatPoint& point);
void OnMaxButtonMouseMove(const CFX_FloatPoint& point);
void OnPosButtonLBDown(const CFX_FloatPoint& point);
void OnPosButtonLBUp(const CFX_FloatPoint& point);
void OnPosButtonMouseMove(const CFX_FloatPoint& point);
FX_FLOAT TrueToFace(FX_FLOAT);
FX_FLOAT FaceToTrue(FX_FLOAT);
PWL_SCROLLBAR_TYPE m_sbType;
PWL_SCROLL_INFO m_OriginInfo;
CPWL_SBButton* m_pMinButton;
CPWL_SBButton* m_pMaxButton;
CPWL_SBButton* m_pPosButton;
PWL_SCROLL_PRIVATEDATA m_sData;
FX_BOOL m_bMouseDown;
FX_BOOL m_bMinOrMax;
FX_BOOL m_bNotifyForever;
FX_FLOAT m_nOldPos;
FX_FLOAT m_fOldPosButton;
};
#endif // FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
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