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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_INCLUDE_PDFWINDOW_PWL_SCROLLBAR_H_
#define FPDFSDK_INCLUDE_PDFWINDOW_PWL_SCROLLBAR_H_
#include "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);
virtual ~CPWL_SBButton();
public:
virtual CFX_ByteString GetClassName() const;
virtual void OnCreate(PWL_CREATEPARAM & cp);
virtual void GetThisAppearanceStream(CFX_ByteTextBuf & sAppStream);
virtual void DrawThisAppearance(CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device);
virtual bool OnLButtonDown(const CPDF_Point & point, FX_DWORD nFlag);
virtual bool OnLButtonUp(const CPDF_Point & point, FX_DWORD nFlag);
virtual bool OnMouseMove(const CPDF_Point & point, FX_DWORD nFlag);
protected:
PWL_SCROLLBAR_TYPE m_eScrollBarType;
PWL_SBBUTTON_TYPE m_eSBButtonType;
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);
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);
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);
virtual ~CPWL_ScrollBar();
public:
virtual CFX_ByteString GetClassName() const;
virtual void OnCreate(PWL_CREATEPARAM & cp);
virtual void RePosChildWnd();
virtual void GetThisAppearanceStream(CFX_ByteTextBuf & sAppStream);
virtual void DrawThisAppearance(CFX_RenderDevice* pDevice, CPDF_Matrix* pUser2Device);
virtual bool OnLButtonDown(const CPDF_Point & point, FX_DWORD nFlag);
virtual bool OnLButtonUp(const CPDF_Point & point, FX_DWORD nFlag);
virtual void OnNotify(CPWL_Wnd* pWnd, FX_DWORD msg, intptr_t wParam = 0, intptr_t lParam = 0);
virtual void CreateChildWnd(const PWL_CREATEPARAM & cp);
FX_FLOAT GetScrollBarWidth() const;
PWL_SCROLLBAR_TYPE GetScrollBarType() const {return m_sbType;};
void SetNotifyForever(bool bForever) {m_bNotifyForever = bForever;}
protected:
void SetScrollRange(FX_FLOAT fMin,FX_FLOAT fMax,FX_FLOAT fClientWidth);
void SetScrollPos(FX_FLOAT fPos);
void MovePosButton(bool bRefresh);
void SetScrollStep(FX_FLOAT fBigStep,FX_FLOAT fSmallStep);
void NotifyScrollWindow();
CPDF_Rect GetScrollArea() const;
private:
void CreateButtons(const PWL_CREATEPARAM & cp);
void OnMinButtonLBDown(const CPDF_Point & point);
void OnMinButtonLBUp(const CPDF_Point & point);
void OnMinButtonMouseMove(const CPDF_Point & point);
void OnMaxButtonLBDown(const CPDF_Point & point);
void OnMaxButtonLBUp(const CPDF_Point & point);
void OnMaxButtonMouseMove(const CPDF_Point & point);
void OnPosButtonLBDown(const CPDF_Point & point);
void OnPosButtonLBUp(const CPDF_Point & point);
void OnPosButtonMouseMove(const CPDF_Point & point);
FX_FLOAT TrueToFace(FX_FLOAT);
FX_FLOAT FaceToTrue(FX_FLOAT);
virtual void TimerProc();
private:
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;
bool m_bMouseDown;
bool m_bMinOrMax;
bool m_bNotifyForever;
FX_FLOAT m_nOldPos;
FX_FLOAT m_fOldPosButton;
};
#endif // FPDFSDK_INCLUDE_PDFWINDOW_PWL_SCROLLBAR_H_
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