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Diffstat (limited to 'fpdfsdk/pdfwindow/cpwl_scroll_bar.h')
| -rw-r--r-- | fpdfsdk/pdfwindow/cpwl_scroll_bar.h | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/fpdfsdk/pdfwindow/cpwl_scroll_bar.h b/fpdfsdk/pdfwindow/cpwl_scroll_bar.h new file mode 100644 index 0000000000..0ab2928f2a --- /dev/null +++ b/fpdfsdk/pdfwindow/cpwl_scroll_bar.h @@ -0,0 +1,185 @@ +// 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_CPWL_SCROLL_BAR_H_ +#define FPDFSDK_PDFWINDOW_CPWL_SCROLL_BAR_H_ + +#include "core/fxcrt/cfx_unowned_ptr.h" +#include "fpdfsdk/pdfwindow/cpwl_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) {} + + bool operator==(const PWL_SCROLL_INFO& that) const { + return fContentMin == that.fContentMin && fContentMax == that.fContentMax && + fPlateWidth == that.fPlateWidth && fBigStep == that.fBigStep && + fSmallStep == that.fSmallStep; + } + bool operator!=(const PWL_SCROLL_INFO& that) const { + return !(*this == that); + } + + float fContentMin; + float fContentMax; + float fPlateWidth; + float fBigStep; + 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; + bool OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) override; + bool OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) override; + bool OnMouseMove(const CFX_PointF& point, uint32_t nFlag) override; + + protected: + PWL_SCROLLBAR_TYPE m_eScrollBarType; + PWL_SBBUTTON_TYPE m_eSBButtonType; + + bool m_bMouseDown; +}; + +struct PWL_FLOATRANGE { + public: + PWL_FLOATRANGE(); + PWL_FLOATRANGE(float min, float max); + + bool operator==(const PWL_FLOATRANGE& that) const { + return fMin == that.fMin && fMax == that.fMax; + } + bool operator!=(const PWL_FLOATRANGE& that) const { return !(*this == that); } + + void Default(); + void Set(float min, float max); + bool In(float x) const; + float GetWidth() const; + + float fMin; + float fMax; +}; + +struct PWL_SCROLL_PRIVATEDATA { + public: + PWL_SCROLL_PRIVATEDATA(); + + bool operator==(const PWL_SCROLL_PRIVATEDATA& that) const { + return ScrollRange == that.ScrollRange && + fClientWidth == that.fClientWidth && fScrollPos == that.fScrollPos && + fBigStep == that.fBigStep && fSmallStep == that.fSmallStep; + } + bool operator!=(const PWL_SCROLL_PRIVATEDATA& that) const { + return !(*this == that); + } + + void Default(); + void SetScrollRange(float min, float max); + void SetClientWidth(float width); + void SetSmallStep(float step); + void SetBigStep(float step); + bool SetPos(float pos); + + void AddSmall(); + void SubSmall(); + void AddBig(); + void SubBig(); + + PWL_FLOATRANGE ScrollRange; + float fClientWidth; + float fScrollPos; + float fBigStep; + float fSmallStep; +}; + +class CPWL_ScrollBar : public CPWL_Wnd { + public: + explicit 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 OnDestroy() override; + void RePosChildWnd() override; + void GetThisAppearanceStream(CFX_ByteTextBuf& sAppStream) override; + void DrawThisAppearance(CFX_RenderDevice* pDevice, + CFX_Matrix* pUser2Device) override; + bool OnLButtonDown(const CFX_PointF& point, uint32_t nFlag) override; + bool OnLButtonUp(const CFX_PointF& point, uint32_t nFlag) override; + void OnNotify(CPWL_Wnd* pWnd, + uint32_t msg, + intptr_t wParam = 0, + intptr_t lParam = 0) override; + void CreateChildWnd(const PWL_CREATEPARAM& cp) override; + void TimerProc() override; + + float GetScrollBarWidth() const; + PWL_SCROLLBAR_TYPE GetScrollBarType() const { return m_sbType; } + + void SetNotifyForever(bool bForever) { m_bNotifyForever = bForever; } + + protected: + void SetScrollRange(float fMin, float fMax, float fClientWidth); + void SetScrollPos(float fPos); + void MovePosButton(bool bRefresh); + void SetScrollStep(float fBigStep, float fSmallStep); + void NotifyScrollWindow(); + CFX_FloatRect GetScrollArea() const; + + private: + void CreateButtons(const PWL_CREATEPARAM& cp); + + void OnMinButtonLBDown(const CFX_PointF& point); + void OnMinButtonLBUp(const CFX_PointF& point); + void OnMinButtonMouseMove(const CFX_PointF& point); + + void OnMaxButtonLBDown(const CFX_PointF& point); + void OnMaxButtonLBUp(const CFX_PointF& point); + void OnMaxButtonMouseMove(const CFX_PointF& point); + + void OnPosButtonLBDown(const CFX_PointF& point); + void OnPosButtonLBUp(const CFX_PointF& point); + void OnPosButtonMouseMove(const CFX_PointF& point); + + float TrueToFace(float); + float FaceToTrue(float); + + PWL_SCROLLBAR_TYPE m_sbType; + PWL_SCROLL_INFO m_OriginInfo; + CFX_UnownedPtr<CPWL_SBButton> m_pMinButton; + CFX_UnownedPtr<CPWL_SBButton> m_pMaxButton; + CFX_UnownedPtr<CPWL_SBButton> m_pPosButton; + PWL_SCROLL_PRIVATEDATA m_sData; + bool m_bMouseDown; + bool m_bMinOrMax; + bool m_bNotifyForever; + float m_nOldPos; + float m_fOldPosButton; +}; + +#endif // FPDFSDK_PDFWINDOW_CPWL_SCROLL_BAR_H_ |