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Diffstat (limited to 'fpdfsdk/pdfwindow/PWL_ScrollBar.h')
| -rw-r--r-- | fpdfsdk/pdfwindow/PWL_ScrollBar.h | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/fpdfsdk/pdfwindow/PWL_ScrollBar.h b/fpdfsdk/pdfwindow/PWL_ScrollBar.h new file mode 100644 index 0000000000..1603469ef5 --- /dev/null +++ b/fpdfsdk/pdfwindow/PWL_ScrollBar.h @@ -0,0 +1,157 @@ +// 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_ |