// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
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#define FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
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#include "fpdfsdk/pdfwindow/PWL_Wnd.h"
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class CPWL_SBButton;
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class CPWL_ScrollBar;
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struct PWL_SCROLL_INFO {
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public:
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PWL_SCROLL_INFO()
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: fContentMin(0.0f),
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fContentMax(0.0f),
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fPlateWidth(0.0f),
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fBigStep(0.0f),
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fSmallStep(0.0f) {}
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FX_FLOAT fContentMin;
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FX_FLOAT fContentMax;
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FX_FLOAT fPlateWidth;
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FX_FLOAT fBigStep;
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FX_FLOAT fSmallStep;
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};
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enum PWL_SCROLLBAR_TYPE { SBT_HSCROLL, SBT_VSCROLL };
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enum PWL_SBBUTTON_TYPE { PSBT_MIN, PSBT_MAX, PSBT_POS };
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class CPWL_SBButton : public CPWL_Wnd {
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public:
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CPWL_SBButton(PWL_SCROLLBAR_TYPE eScrollBarType,
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PWL_SBBUTTON_TYPE eButtonType);
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~CPWL_SBButton() override;
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// CPWL_Wnd
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CFX_ByteString GetClassName() const override;
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void OnCreate(PWL_CREATEPARAM& cp) override;
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void GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) override;
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void DrawThisAppearance(CFX_RenderDevice* pDevice,
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CFX_Matrix* pUser2Device) override;
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FX_BOOL OnLButtonDown(const CFX_FloatPoint& point, uint32_t nFlag) override;
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FX_BOOL OnLButtonUp(const CFX_FloatPoint& point, uint32_t nFlag) override;
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FX_BOOL OnMouseMove(const CFX_FloatPoint& point, uint32_t nFlag) override;
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protected:
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PWL_SCROLLBAR_TYPE m_eScrollBarType;
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PWL_SBBUTTON_TYPE m_eSBButtonType;
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FX_BOOL m_bMouseDown;
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};
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struct PWL_FLOATRANGE {
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public:
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PWL_FLOATRANGE();
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PWL_FLOATRANGE(FX_FLOAT min, FX_FLOAT max);
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void Default();
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void Set(FX_FLOAT min, FX_FLOAT max);
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FX_BOOL In(FX_FLOAT x) const;
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FX_FLOAT GetWidth() const;
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FX_FLOAT fMin, fMax;
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};
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struct PWL_SCROLL_PRIVATEDATA {
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public:
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PWL_SCROLL_PRIVATEDATA();
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void Default();
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void SetScrollRange(FX_FLOAT min, FX_FLOAT max);
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void SetClientWidth(FX_FLOAT width);
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void SetSmallStep(FX_FLOAT step);
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void SetBigStep(FX_FLOAT step);
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FX_BOOL SetPos(FX_FLOAT pos);
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void AddSmall();
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void SubSmall();
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void AddBig();
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void SubBig();
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PWL_FLOATRANGE ScrollRange;
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FX_FLOAT fClientWidth;
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FX_FLOAT fScrollPos;
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FX_FLOAT fBigStep;
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FX_FLOAT fSmallStep;
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};
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class CPWL_ScrollBar : public CPWL_Wnd {
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public:
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CPWL_ScrollBar(PWL_SCROLLBAR_TYPE sbType = SBT_HSCROLL);
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~CPWL_ScrollBar() override;
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// CPWL_Wnd
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CFX_ByteString GetClassName() const override;
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void OnCreate(PWL_CREATEPARAM& cp) override;
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void RePosChildWnd() override;
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void GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) override;
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void DrawThisAppearance(CFX_RenderDevice* pDevice,
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CFX_Matrix* pUser2Device) override;
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FX_BOOL OnLButtonDown(const CFX_FloatPoint& point, uint32_t nFlag) override;
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FX_BOOL OnLButtonUp(const CFX_FloatPoint& point, uint32_t nFlag) override;
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void OnNotify(CPWL_Wnd* pWnd,
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uint32_t msg,
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intptr_t wParam = 0,
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intptr_t lParam = 0) override;
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void CreateChildWnd(const PWL_CREATEPARAM& cp) override;
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void TimerProc() override;
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FX_FLOAT GetScrollBarWidth() const;
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PWL_SCROLLBAR_TYPE GetScrollBarType() const { return m_sbType; }
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void SetNotifyForever(FX_BOOL bForever) { m_bNotifyForever = bForever; }
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protected:
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void SetScrollRange(FX_FLOAT fMin, FX_FLOAT fMax, FX_FLOAT fClientWidth);
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void SetScrollPos(FX_FLOAT fPos);
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void MovePosButton(FX_BOOL bRefresh);
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void SetScrollStep(FX_FLOAT fBigStep, FX_FLOAT fSmallStep);
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void NotifyScrollWindow();
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CFX_FloatRect GetScrollArea() const;
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private:
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void CreateButtons(const PWL_CREATEPARAM& cp);
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void OnMinButtonLBDown(const CFX_FloatPoint& point);
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void OnMinButtonLBUp(const CFX_FloatPoint& point);
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void OnMinButtonMouseMove(const CFX_FloatPoint& point);
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void OnMaxButtonLBDown(const CFX_FloatPoint& point);
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void OnMaxButtonLBUp(const CFX_FloatPoint& point);
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void OnMaxButtonMouseMove(const CFX_FloatPoint& point);
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void OnPosButtonLBDown(const CFX_FloatPoint& point);
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void OnPosButtonLBUp(const CFX_FloatPoint& point);
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void OnPosButtonMouseMove(const CFX_FloatPoint& point);
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FX_FLOAT TrueToFace(FX_FLOAT);
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FX_FLOAT FaceToTrue(FX_FLOAT);
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PWL_SCROLLBAR_TYPE m_sbType;
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PWL_SCROLL_INFO m_OriginInfo;
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CPWL_SBButton* m_pMinButton;
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CPWL_SBButton* m_pMaxButton;
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CPWL_SBButton* m_pPosButton;
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PWL_SCROLL_PRIVATEDATA m_sData;
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FX_BOOL m_bMouseDown;
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FX_BOOL m_bMinOrMax;
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FX_BOOL m_bNotifyForever;
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FX_FLOAT m_nOldPos;
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FX_FLOAT m_fOldPosButton;
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};
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#endif // FPDFSDK_PDFWINDOW_PWL_SCROLLBAR_H_
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