// 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 #include "xfa/fwl/basewidget/fwl_scrollbarimp.h" #include "xfa/fwl/basewidget/ifwl_scrollbar.h" #include "xfa/fwl/core/cfwl_message.h" #include "xfa/fwl/core/cfwl_themebackground.h" #include "xfa/fwl/core/cfwl_themepart.h" #include "xfa/fwl/core/fwl_noteimp.h" #include "xfa/fwl/core/fwl_targetimp.h" #include "xfa/fwl/core/fwl_widgetimp.h" #include "xfa/fwl/core/ifwl_themeprovider.h" #define FWL_SCROLLBAR_Elapse 500 #define FWL_SCROLLBAR_MinThumb 5 // static IFWL_ScrollBar* IFWL_ScrollBar::Create( const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter) { IFWL_ScrollBar* pScrollBar = new IFWL_ScrollBar; CFWL_ScrollBarImp* pScrollBarImpl = new CFWL_ScrollBarImp(properties, pOuter); pScrollBar->SetImpl(pScrollBarImpl); pScrollBarImpl->SetInterface(pScrollBar); return pScrollBar; } IFWL_ScrollBar::IFWL_ScrollBar() {} FX_BOOL IFWL_ScrollBar::IsVertical() { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->IsVertical(); } FWL_ERR IFWL_ScrollBar::GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetRange(fMin, fMax); } FWL_ERR IFWL_ScrollBar::SetRange(FX_FLOAT fMin, FX_FLOAT fMax) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetRange(fMin, fMax); } FX_FLOAT IFWL_ScrollBar::GetPageSize() { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetPageSize(); } FWL_ERR IFWL_ScrollBar::SetPageSize(FX_FLOAT fPageSize) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetPageSize(fPageSize); } FX_FLOAT IFWL_ScrollBar::GetStepSize() { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetStepSize(); } FWL_ERR IFWL_ScrollBar::SetStepSize(FX_FLOAT fStepSize) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetStepSize(fStepSize); } FX_FLOAT IFWL_ScrollBar::GetPos() { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetPos(); } FWL_ERR IFWL_ScrollBar::SetPos(FX_FLOAT fPos) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetPos(fPos); } FX_FLOAT IFWL_ScrollBar::GetTrackPos() { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->GetTrackPos(); } FWL_ERR IFWL_ScrollBar::SetTrackPos(FX_FLOAT fTrackPos) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->SetTrackPos(fTrackPos); } FX_BOOL IFWL_ScrollBar::DoScroll(uint32_t dwCode, FX_FLOAT fPos) { return static_cast<CFWL_ScrollBarImp*>(GetImpl())->DoScroll(dwCode, fPos); } CFWL_ScrollBarImp::CFWL_ScrollBarImp(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter) : CFWL_WidgetImp(properties, pOuter), m_hTimer(nullptr), m_fRangeMin(0), m_fRangeMax(-1), m_fPageSize(0), m_fStepSize(0), m_fPos(0), m_fTrackPos(0), m_iMinButtonState(FWL_PARTSTATE_SCB_Normal), m_iMaxButtonState(FWL_PARTSTATE_SCB_Normal), m_iThumbButtonState(FWL_PARTSTATE_SCB_Normal), m_iMinTrackState(FWL_PARTSTATE_SCB_Normal), m_iMaxTrackState(FWL_PARTSTATE_SCB_Normal), m_fLastTrackPos(0), m_cpTrackPointX(0), m_cpTrackPointY(0), m_iMouseWheel(0), m_bTrackMouseLeave(FALSE), m_bMouseHover(FALSE), m_bMouseDown(FALSE), m_bRepaintThumb(FALSE), m_fButtonLen(0), m_bMinSize(FALSE), m_bCustomLayout(FALSE), m_fMinThumb(FWL_SCROLLBAR_MinThumb) { m_rtClient.Reset(); m_rtThumb.Reset(); m_rtMinBtn.Reset(); m_rtMaxBtn.Reset(); m_rtMinTrack.Reset(); m_rtMaxTrack.Reset(); } CFWL_ScrollBarImp::~CFWL_ScrollBarImp() {} FWL_ERR CFWL_ScrollBarImp::GetClassName(CFX_WideString& wsClass) const { wsClass = FWL_CLASS_ScrollBar; return FWL_ERR_Succeeded; } uint32_t CFWL_ScrollBarImp::GetClassID() const { return FWL_CLASSHASH_ScrollBar; } FWL_ERR CFWL_ScrollBarImp::Initialize() { if (CFWL_WidgetImp::Initialize() != FWL_ERR_Succeeded) return FWL_ERR_Indefinite; m_pDelegate = new CFWL_ScrollBarImpDelegate(this); return FWL_ERR_Succeeded; } FWL_ERR CFWL_ScrollBarImp::Finalize() { delete m_pDelegate; m_pDelegate = nullptr; return CFWL_WidgetImp::Finalize(); } FWL_ERR CFWL_ScrollBarImp::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) { if (bAutoSize) { rect.Set(0, 0, 0, 0); FX_FLOAT* pfMinWidth = static_cast<FX_FLOAT*>( GetThemeCapacity(FWL_WGTCAPACITY_ScrollBarWidth)); if (!pfMinWidth) return FWL_ERR_Indefinite; if (IsVertical()) { rect.Set(0, 0, (*pfMinWidth), (*pfMinWidth) * 3); } else { rect.Set(0, 0, (*pfMinWidth) * 3, (*pfMinWidth)); } CFWL_WidgetImp::GetWidgetRect(rect, TRUE); } else { rect = m_pProperties->m_rtWidget; } return FWL_ERR_Succeeded; } FWL_ERR CFWL_ScrollBarImp::Update() { if (IsLocked()) { return FWL_ERR_Indefinite; } if (!m_pProperties->m_pThemeProvider) { m_pProperties->m_pThemeProvider = GetAvailableTheme(); } Layout(); return FWL_ERR_Succeeded; } FWL_ERR CFWL_ScrollBarImp::DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) { if (!pGraphics) return FWL_ERR_Indefinite; if (!m_pProperties->m_pThemeProvider) return FWL_ERR_Indefinite; IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; if (HasBorder()) { DrawBorder(pGraphics, FWL_PART_SCB_Border, pTheme, pMatrix); } if (HasEdge()) { DrawEdge(pGraphics, FWL_PART_SCB_Edge, pTheme, pMatrix); } DrawTrack(pGraphics, pTheme, TRUE, pMatrix); DrawTrack(pGraphics, pTheme, FALSE, pMatrix); DrawArrowBtn(pGraphics, pTheme, TRUE, pMatrix); DrawArrowBtn(pGraphics, pTheme, FALSE, pMatrix); DrawThumb(pGraphics, pTheme, pMatrix); return FWL_ERR_Succeeded; } inline FX_BOOL CFWL_ScrollBarImp::IsVertical() { return m_pProperties->m_dwStyleExes & FWL_STYLEEXT_SCB_Vert; } FWL_ERR CFWL_ScrollBarImp::GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax) { fMin = m_fRangeMin; fMax = m_fRangeMax; return FWL_ERR_Succeeded; } FWL_ERR CFWL_ScrollBarImp::SetRange(FX_FLOAT fMin, FX_FLOAT fMax) { m_fRangeMin = fMin; m_fRangeMax = fMax; return FWL_ERR_Succeeded; } FX_FLOAT CFWL_ScrollBarImp::GetPageSize() { return m_fPageSize; } FWL_ERR CFWL_ScrollBarImp::SetPageSize(FX_FLOAT fPageSize) { m_fPageSize = fPageSize; return FWL_ERR_Succeeded; } FX_FLOAT CFWL_ScrollBarImp::GetStepSize() { return m_fStepSize; } FWL_ERR CFWL_ScrollBarImp::SetStepSize(FX_FLOAT fStepSize) { m_fStepSize = fStepSize; return FWL_ERR_Succeeded; } FX_FLOAT CFWL_ScrollBarImp::GetPos() { return m_fPos; } FWL_ERR CFWL_ScrollBarImp::SetPos(FX_FLOAT fPos) { m_fPos = fPos; return FWL_ERR_Succeeded; } FX_FLOAT CFWL_ScrollBarImp::GetTrackPos() { return m_fTrackPos; } FWL_ERR CFWL_ScrollBarImp::SetTrackPos(FX_FLOAT fTrackPos) { m_fTrackPos = fTrackPos; CalcThumbButtonRect(m_rtThumb); CalcMinTrackRect(m_rtMinTrack); CalcMaxTrackRect(m_rtMaxTrack); return FWL_ERR_Succeeded; } FX_BOOL CFWL_ScrollBarImp::DoScroll(uint32_t dwCode, FX_FLOAT fPos) { switch (dwCode) { case FWL_SCBCODE_Min: case FWL_SCBCODE_Max: case FWL_SCBCODE_PageBackward: case FWL_SCBCODE_PageForward: case FWL_SCBCODE_StepBackward: break; case FWL_SCBCODE_StepForward: break; case FWL_SCBCODE_Pos: case FWL_SCBCODE_TrackPos: case FWL_SCBCODE_EndScroll: break; default: { return FALSE; } } return OnScroll(dwCode, fPos); } int32_t CFWL_ScrollBarImp::Run(FWL_HTIMER hTimer) { if (m_hTimer) { FWL_StopTimer(m_hTimer); } if (!SendEvent()) { m_hTimer = FWL_StartTimer(this, 0); } return 1; } FWL_ERR CFWL_ScrollBarImp::SetOuter(IFWL_Widget* pOuter) { m_pOuter = pOuter; return FWL_ERR_Succeeded; } void CFWL_ScrollBarImp::DrawTrack(CFX_Graphics* pGraphics, IFWL_ThemeProvider* pTheme, FX_BOOL bLower, const CFX_Matrix* pMatrix) { CFWL_ThemeBackground param; param.m_pWidget = m_pInterface; param.m_iPart = bLower ? FWL_PART_SCB_LowerTrack : FWL_PART_SCB_UpperTrack; param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) ? FWL_PARTSTATE_SCB_Disabled : (bLower ? m_iMinTrackState : m_iMaxTrackState); param.m_pGraphics = pGraphics; param.m_matrix.Concat(*pMatrix); param.m_rtPart = bLower ? m_rtMinTrack : m_rtMaxTrack; pTheme->DrawBackground(¶m); } void CFWL_ScrollBarImp::DrawArrowBtn(CFX_Graphics* pGraphics, IFWL_ThemeProvider* pTheme, FX_BOOL bMinBtn, const CFX_Matrix* pMatrix) { CFWL_ThemeBackground param; param.m_pWidget = m_pInterface; param.m_iPart = bMinBtn ? FWL_PART_SCB_ForeArrow : FWL_PART_SCB_BackArrow; param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) ? FWL_PARTSTATE_SCB_Disabled : (bMinBtn ? m_iMinButtonState : m_iMaxButtonState); param.m_pGraphics = pGraphics; param.m_matrix.Concat(*pMatrix); param.m_rtPart = bMinBtn ? m_rtMinBtn : m_rtMaxBtn; if (param.m_rtPart.height > 0 && param.m_rtPart.width > 0) { pTheme->DrawBackground(¶m); } } void CFWL_ScrollBarImp::DrawThumb(CFX_Graphics* pGraphics, IFWL_ThemeProvider* pTheme, const CFX_Matrix* pMatrix) { if (!IsEnabled()) { } CFWL_ThemeBackground param; param.m_pWidget = m_pInterface; param.m_iPart = FWL_PART_SCB_Thumb; param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) ? FWL_PARTSTATE_SCB_Disabled : m_iThumbButtonState; param.m_pGraphics = pGraphics; param.m_matrix.Concat(*pMatrix); param.m_rtPart = m_rtThumb; pTheme->DrawBackground(¶m); } void CFWL_ScrollBarImp::Layout() { IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; CFWL_ThemePart part; part.m_pWidget = m_pInterface; m_fMinThumb = *static_cast<FX_FLOAT*>( pTheme->GetCapacity(&part, FWL_CAPACITY_SCB_Size)); m_bCustomLayout = pTheme->IsCustomizedLayout(m_pInterface); GetClientRect(m_rtClient); CalcButtonLen(); CalcMinButtonRect(m_rtMinBtn); CalcMaxButtonRect(m_rtMaxBtn); CalcThumbButtonRect(m_rtThumb); CalcMinTrackRect(m_rtMinTrack); CalcMaxTrackRect(m_rtMaxTrack); } void CFWL_ScrollBarImp::CalcButtonLen() { m_fButtonLen = IsVertical() ? m_rtClient.width : m_rtClient.height; FX_FLOAT fLength = IsVertical() ? m_rtClient.height : m_rtClient.width; if (fLength < m_fButtonLen * 2) { m_fButtonLen = fLength / 2; m_bMinSize = TRUE; } else { m_bMinSize = FALSE; } } void CFWL_ScrollBarImp::CalcMinButtonRect(CFX_RectF& rect) { if (m_bCustomLayout) { IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; CFWL_ThemePart pPart; pPart.m_rtPart = m_rtMinBtn; pPart.m_pWidget = m_pInterface; pPart.m_iPart = FWL_PART_SCB_ForeArrow; pPart.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) ? FWL_PARTSTATE_SCB_Disabled : m_iMinButtonState; pTheme->GetPartRect(&pPart, rect); } else { rect.left = m_rtClient.left; rect.top = m_rtClient.top; rect.width = IsVertical() ? m_rtClient.width : m_fButtonLen; rect.height = IsVertical() ? m_fButtonLen : m_rtClient.height; } } void CFWL_ScrollBarImp::CalcMaxButtonRect(CFX_RectF& rect) { if (m_bCustomLayout) { IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; CFWL_ThemePart pPart; pPart.m_rtPart = m_rtMaxBtn; pPart.m_pWidget = m_pInterface; pPart.m_iPart = FWL_PART_SCB_BackArrow; pPart.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) ? FWL_PARTSTATE_SCB_Disabled : m_iMaxButtonState; pTheme->GetPartRect(&pPart, rect); } else { rect.left = IsVertical() ? m_rtClient.left : m_rtClient.right() - m_fButtonLen; rect.top = IsVertical() ? m_rtClient.bottom() - m_fButtonLen : m_rtClient.top; rect.width = IsVertical() ? m_rtClient.width : m_fButtonLen; rect.height = IsVertical() ? m_fButtonLen : m_rtClient.height; } } void CFWL_ScrollBarImp::CalcThumbButtonRect(CFX_RectF& rect) { if (!IsEnabled()) { m_rtThumb.Reset(); return; } if (m_bMinSize) { m_rtThumb.Empty(); return; } FX_FLOAT fRange = m_fRangeMax - m_fRangeMin; memset(&rect, 0, sizeof(CFX_Rect)); if (fRange < 0) { if (IsVertical()) { rect.Set(m_rtClient.left, m_rtMaxBtn.bottom(), m_rtClient.width, 0); } else { rect.Set(m_rtMaxBtn.right(), m_rtClient.top, 0, m_rtClient.height); } return; } CFX_RectF rtClient = m_rtClient; FX_FLOAT fLength = IsVertical() ? rtClient.height : rtClient.width; FX_FLOAT fSize = m_fButtonLen; if (m_bCustomLayout) { if (IsVertical()) { fLength = fLength - m_rtMinBtn.height - m_rtMaxBtn.height; if (fLength < m_rtMinBtn.height || fLength < m_rtMaxBtn.height) { fLength = 0.0f; } } else { fLength = fLength - m_rtMinBtn.width - m_rtMaxBtn.width; if (fLength < m_rtMinBtn.width || fLength < m_rtMaxBtn.width) { fLength = 0.0f; } } } else { fLength -= fSize * 2.0f; if (fLength < fSize) { fLength = 0.0f; } } FX_FLOAT fThumbSize = fLength * fLength / (fRange + fLength); if (fThumbSize < m_fMinThumb) { fThumbSize = m_fMinThumb; } FX_FLOAT fDiff = fLength - fThumbSize; if (fDiff < 0.0f) { fDiff = 0.0f; } FX_FLOAT fTrackPos = m_fTrackPos; if (fTrackPos > m_fRangeMax) { fTrackPos = m_fRangeMax; } if (fTrackPos < m_fRangeMin) { fTrackPos = m_fRangeMin; } if (!fRange) return; if (m_bCustomLayout) { FX_FLOAT iPos = fDiff * (fTrackPos - m_fRangeMin) / fRange; rect.left = rtClient.left; if (!IsVertical()) { if ((m_rtMinBtn.right() == m_rtMaxBtn.left && m_rtMinBtn.width > 0 && m_rtMaxBtn.width > 0) || (0 == m_rtMinBtn.width && 0 == m_rtMaxBtn.width)) { rect.left += iPos; } else { rect.left += m_rtMinBtn.right() + iPos; } } rect.top = rtClient.top; if (IsVertical()) { if ((m_rtMinBtn.bottom() == m_rtMaxBtn.top && m_rtMinBtn.height > 0 && m_rtMaxBtn.height > 0) || (0 == m_rtMinBtn.height && 0 == m_rtMaxBtn.height)) { rect.top += iPos; } else { rect.top += m_rtMinBtn.bottom() + iPos; } } rect.width = IsVertical() ? rtClient.width : fThumbSize; rect.height = IsVertical() ? fThumbSize : rtClient.height; } else { FX_FLOAT iPos = fSize + fDiff * (fTrackPos - m_fRangeMin) / fRange; rect.left = rtClient.left; if (!IsVertical()) { rect.left += iPos; } rect.top = rtClient.top; if (IsVertical()) { rect.top += iPos; } rect.width = IsVertical() ? rtClient.width : fThumbSize; rect.height = IsVertical() ? fThumbSize : rtClient.height; } } void CFWL_ScrollBarImp::CalcMinTrackRect(CFX_RectF& rect) { if (m_bMinSize) { rect.Empty(); return; } FX_FLOAT fBottom = m_rtThumb.bottom(); FX_FLOAT fRight = m_rtThumb.right(); FX_FLOAT ix = (m_rtThumb.left + fRight) / 2; FX_FLOAT iy = (m_rtThumb.top + fBottom) / 2; rect.left = m_rtClient.left; rect.top = m_rtClient.top; FX_BOOL bVertical = IsVertical(); rect.width = bVertical ? m_rtClient.width : ix; rect.height = bVertical ? iy : m_rtClient.height; if (m_bCustomLayout) { if (bVertical) { if (0 == m_rtMinBtn.height && 0 == m_rtMaxBtn.height) { rect.top = m_rtClient.top; } else if (m_rtMinBtn.top < m_rtThumb.top) { rect.top = m_rtMinBtn.bottom(); rect.height -= (m_rtMinBtn.bottom() - m_rtClient.top); } } else { if (0 == m_rtMinBtn.width && 0 == m_rtMaxBtn.width) { rect.left = m_rtClient.left; } else if (m_rtMinBtn.left < m_rtThumb.left) { rect.left = m_rtMinBtn.right(); rect.width -= (m_rtMinBtn.right() - m_rtClient.left); } } } } void CFWL_ScrollBarImp::CalcMaxTrackRect(CFX_RectF& rect) { if (m_bMinSize) { rect.Empty(); return; } FX_FLOAT ix = (m_rtThumb.left + m_rtThumb.right()) / 2; FX_FLOAT iy = (m_rtThumb.top + m_rtThumb.bottom()) / 2; FX_BOOL bVertical = IsVertical(); rect.left = bVertical ? m_rtClient.left : ix; rect.top = bVertical ? iy : m_rtClient.top; rect.width = bVertical ? m_rtClient.width : m_rtClient.right() - ix; rect.height = bVertical ? m_rtClient.bottom() - iy : m_rtClient.height; if (m_bCustomLayout) { if (bVertical) { if (m_rtMinBtn.top > m_rtThumb.top && m_rtMinBtn.height > 0 && m_rtMaxBtn.height > 0) { rect.height -= (m_rtClient.bottom() - m_rtMinBtn.top); } else if (m_rtMinBtn.height > 0 && m_rtMaxBtn.height > 0) { rect.height -= (m_rtClient.bottom() - m_rtMaxBtn.top); } } else { if (m_rtMinBtn.left > m_rtThumb.left && m_rtMinBtn.width > 0 && m_rtMaxBtn.width > 0) { rect.width -= (m_rtClient.right() - m_rtMinBtn.left); } else if (m_rtMinBtn.width > 0 && m_rtMaxBtn.width > 0) { rect.width -= (m_rtClient.right() - m_rtMaxBtn.left); } } } } FX_FLOAT CFWL_ScrollBarImp::GetTrackPointPos(FX_FLOAT fx, FX_FLOAT fy) { FX_FLOAT fDiffX = fx - m_cpTrackPointX; FX_FLOAT fDiffY = fy - m_cpTrackPointY; FX_FLOAT fRange = m_fRangeMax - m_fRangeMin; FX_FLOAT fPos; if (m_bCustomLayout) { if (IsVertical()) { if (0 == m_rtMinBtn.height && 0 == m_rtMaxBtn.height) { fPos = fRange * fDiffY / (m_rtClient.height - m_rtThumb.height); } else if (m_rtMinBtn.bottom() == m_rtMaxBtn.top) { fPos = fRange * fDiffY / (m_rtMinBtn.top - m_rtClient.top - m_rtThumb.height); } else { fPos = fRange * fDiffY / (m_rtMaxBtn.top - m_rtMinBtn.bottom() - m_rtThumb.height); } } else { if (0 == m_rtMinBtn.width && 0 == m_rtMaxBtn.width) { fPos = fRange * fDiffX / (m_rtClient.width - m_rtThumb.width); } else if (m_rtMinBtn.right() == m_rtMaxBtn.left) { fPos = fRange * fDiffX / (m_rtMinBtn.left - m_rtClient.left - m_rtThumb.width); } else { fPos = fRange * fDiffX / (m_rtMaxBtn.left - m_rtMinBtn.right() - m_rtThumb.width); } } } else { if (IsVertical()) { fPos = fRange * fDiffY / (m_rtMaxBtn.top - m_rtMinBtn.bottom() - m_rtThumb.height); } else { fPos = fRange * fDiffX / (m_rtMaxBtn.left - m_rtMinBtn.right() - m_rtThumb.width); } } fPos += m_fLastTrackPos; if (fPos < m_fRangeMin) { fPos = m_fRangeMin; } if (fPos > m_fRangeMax) { fPos = m_fRangeMax; } return fPos; } void CFWL_ScrollBarImp::GetTrackRect(CFX_RectF& rect, FX_BOOL bLower) { FX_BOOL bDisabled = m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled; if (bDisabled || m_bCustomLayout) { rect = bLower ? m_rtMinTrack : m_rtMaxTrack; } else { FX_FLOAT fW = m_rtThumb.width / 2; FX_FLOAT fH = m_rtThumb.height / 2; FX_BOOL bVert = IsVertical(); if (bLower) { if (bVert) { FX_FLOAT fMinTrackHeight = m_rtMinTrack.height - fH - m_rtMinBtn.height; fMinTrackHeight = (fMinTrackHeight >= 0.0f) ? fMinTrackHeight : 0.0f; rect.Set(m_rtMinTrack.left, m_rtMinTrack.top + m_rtMinBtn.height, m_rtMinTrack.width, fMinTrackHeight); } else { FX_FLOAT fMinTrackWidth = m_rtMinTrack.width - fW - m_rtMinBtn.width + 2; fMinTrackWidth = (fMinTrackWidth >= 0.0f) ? fMinTrackWidth : 0.0f; rect.Set(m_rtMinTrack.left + m_rtMinBtn.width - 1, m_rtMinTrack.top, fMinTrackWidth, m_rtMinTrack.height); } } else { if (bVert) { FX_FLOAT fMaxTrackHeight = m_rtMaxTrack.height - fH - m_rtMaxBtn.height; fMaxTrackHeight = (fMaxTrackHeight >= 0.0f) ? fMaxTrackHeight : 0.0f; rect.Set(m_rtMaxTrack.left, m_rtMaxTrack.top + fH, m_rtMaxTrack.width, fMaxTrackHeight); } else { FX_FLOAT fMaxTrackWidth = m_rtMaxTrack.width - fW - m_rtMaxBtn.width + 2; fMaxTrackWidth = (fMaxTrackWidth >= 0.0f) ? fMaxTrackWidth : 0.0f; rect.Set(m_rtMaxTrack.left + fW, m_rtMaxTrack.top, fMaxTrackWidth, m_rtMaxTrack.height); } } } } FX_BOOL CFWL_ScrollBarImp::SendEvent() { if (m_iMinButtonState == FWL_PARTSTATE_SCB_Pressed) { DoScroll(FWL_SCBCODE_StepBackward, m_fTrackPos); return FALSE; } if (m_iMaxButtonState == FWL_PARTSTATE_SCB_Pressed) { DoScroll(FWL_SCBCODE_StepForward, m_fTrackPos); return FALSE; } if (m_iMinTrackState == FWL_PARTSTATE_SCB_Pressed) { DoScroll(FWL_SCBCODE_PageBackward, m_fTrackPos); return m_rtThumb.Contains(m_cpTrackPointX, m_cpTrackPointY); } if (m_iMaxTrackState == FWL_PARTSTATE_SCB_Pressed) { DoScroll(FWL_SCBCODE_PageForward, m_fTrackPos); return m_rtThumb.Contains(m_cpTrackPointX, m_cpTrackPointY); } if (m_iMouseWheel) { uint16_t dwCode = m_iMouseWheel < 0 ? FWL_SCBCODE_StepForward : FWL_SCBCODE_StepBackward; DoScroll(dwCode, m_fTrackPos); } return TRUE; } FX_BOOL CFWL_ScrollBarImp::OnScroll(uint32_t dwCode, FX_FLOAT fPos) { FX_BOOL bRet = TRUE; CFWL_EvtScroll ev; ev.m_iScrollCode = dwCode; ev.m_pSrcTarget = m_pInterface; ev.m_fPos = fPos; ev.m_pRet = &bRet; DispatchEvent(&ev); return bRet; } CFWL_ScrollBarImpDelegate::CFWL_ScrollBarImpDelegate(CFWL_ScrollBarImp* pOwner) : m_pOwner(pOwner) {} int32_t CFWL_ScrollBarImpDelegate::OnProcessMessage(CFWL_Message* pMessage) { if (!pMessage) return 0; int32_t iRet = 1; uint32_t dwMsgCode = pMessage->GetClassID(); if (dwMsgCode == FWL_MSGHASH_Mouse) { CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage); uint32_t dwCmd = pMsg->m_dwCmd; switch (dwCmd) { case FWL_MSGMOUSECMD_LButtonDown: { OnLButtonDown(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); break; } case FWL_MSGMOUSECMD_LButtonUp: { OnLButtonUp(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); break; } case FWL_MSGMOUSECMD_MouseMove: { OnMouseMove(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); break; } case FWL_MSGMOUSECMD_MouseLeave: { OnMouseLeave(); break; } default: { iRet = 0; } } } else if (dwMsgCode == FWL_MSGHASH_MouseWheel) { CFWL_MsgMouseWheel* pMsg = static_cast<CFWL_MsgMouseWheel*>(pMessage); OnMouseWheel(pMsg->m_fx, pMsg->m_fy, pMsg->m_dwFlags, pMsg->m_fDeltaX, pMsg->m_fDeltaY); } else { iRet = 0; } return iRet; } FWL_ERR CFWL_ScrollBarImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) { return m_pOwner->DrawWidget(pGraphics, pMatrix); } void CFWL_ScrollBarImpDelegate::OnLButtonDown(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) { if (!m_pOwner->IsEnabled()) { return; } m_pOwner->m_bMouseDown = TRUE; m_pOwner->SetGrab(TRUE); m_pOwner->m_cpTrackPointX = fx; m_pOwner->m_cpTrackPointY = fy; m_pOwner->m_fLastTrackPos = m_pOwner->m_fTrackPos; if (m_pOwner->m_rtMinBtn.Contains(fx, fy)) { DoMouseDown(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState, fx, fy); } else { if (m_pOwner->m_rtThumb.Contains(fx, fy)) { DoMouseDown(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState, fx, fy); } else { if (m_pOwner->m_rtMaxBtn.Contains(fx, fy)) { DoMouseDown(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState, fx, fy); } else { if (m_pOwner->m_rtMinTrack.Contains(fx, fy)) { DoMouseDown(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState, fx, fy); } else { DoMouseDown(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState, fx, fy); } } } } if (!m_pOwner->SendEvent()) { m_pOwner->m_hTimer = FWL_StartTimer(m_pOwner, FWL_SCROLLBAR_Elapse); } } void CFWL_ScrollBarImpDelegate::OnLButtonUp(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) { FWL_StopTimer(m_pOwner->m_hTimer); m_pOwner->m_bMouseDown = FALSE; DoMouseUp(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState, fx, fy); DoMouseUp(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState, fx, fy); DoMouseUp(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState, fx, fy); DoMouseUp(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState, fx, fy); DoMouseUp(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState, fx, fy); m_pOwner->SetGrab(FALSE); } void CFWL_ScrollBarImpDelegate::OnMouseMove(uint32_t dwFlags, FX_FLOAT fx, FX_FLOAT fy) { DoMouseMove(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState, fx, fy); DoMouseMove(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState, fx, fy); DoMouseMove(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState, fx, fy); DoMouseMove(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState, fx, fy); DoMouseMove(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState, fx, fy); } void CFWL_ScrollBarImpDelegate::OnMouseLeave() { DoMouseLeave(0, m_pOwner->m_rtMinBtn, m_pOwner->m_iMinButtonState); DoMouseLeave(1, m_pOwner->m_rtThumb, m_pOwner->m_iThumbButtonState); DoMouseLeave(2, m_pOwner->m_rtMaxBtn, m_pOwner->m_iMaxButtonState); DoMouseLeave(3, m_pOwner->m_rtMinTrack, m_pOwner->m_iMinTrackState); DoMouseLeave(4, m_pOwner->m_rtMaxTrack, m_pOwner->m_iMaxTrackState); } void CFWL_ScrollBarImpDelegate::OnMouseWheel(FX_FLOAT fx, FX_FLOAT fy, uint32_t dwFlags, FX_FLOAT fDeltaX, FX_FLOAT fDeltaY) { m_pOwner->m_iMouseWheel = (int32_t)fDeltaX; m_pOwner->SendEvent(); m_pOwner->m_iMouseWheel = 0; } void CFWL_ScrollBarImpDelegate::DoMouseDown(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState, FX_FLOAT fx, FX_FLOAT fy) { if (!rtItem.Contains(fx, fy)) { return; } if (iState == FWL_PARTSTATE_SCB_Pressed) { return; } iState = FWL_PARTSTATE_SCB_Pressed; m_pOwner->Repaint(&rtItem); } void CFWL_ScrollBarImpDelegate::DoMouseUp(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState, FX_FLOAT fx, FX_FLOAT fy) { int32_t iNewState = rtItem.Contains(fx, fy) ? FWL_PARTSTATE_SCB_Hovered : FWL_PARTSTATE_SCB_Normal; if (iState == iNewState) { return; } iState = iNewState; m_pOwner->Repaint(&rtItem); m_pOwner->OnScroll(FWL_SCBCODE_EndScroll, m_pOwner->m_fTrackPos); } void CFWL_ScrollBarImpDelegate::DoMouseMove(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState, FX_FLOAT fx, FX_FLOAT fy) { if (!m_pOwner->m_bMouseDown) { int32_t iNewState = rtItem.Contains(fx, fy) ? FWL_PARTSTATE_SCB_Hovered : FWL_PARTSTATE_SCB_Normal; if (iState == iNewState) { return; } iState = iNewState; m_pOwner->Repaint(&rtItem); } else if ((2 == iItem) && (m_pOwner->m_iThumbButtonState == FWL_PARTSTATE_SCB_Pressed)) { FX_FLOAT fPos = m_pOwner->GetTrackPointPos(fx, fy); m_pOwner->m_fTrackPos = fPos; m_pOwner->OnScroll(FWL_SCBCODE_TrackPos, fPos); } } void CFWL_ScrollBarImpDelegate::DoMouseLeave(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState) { if (iState == FWL_PARTSTATE_SCB_Normal) { return; } iState = FWL_PARTSTATE_SCB_Normal; m_pOwner->Repaint(&rtItem); } void CFWL_ScrollBarImpDelegate::DoMouseHover(int32_t iItem, const CFX_RectF& rtItem, int32_t& iState) { if (iState == FWL_PARTSTATE_SCB_Hovered) { return; } iState = FWL_PARTSTATE_SCB_Hovered; m_pOwner->Repaint(&rtItem); }