diff options
Diffstat (limited to 'xfa/fwl/core/ifwl_scrollbar.cpp')
| -rw-r--r-- | xfa/fwl/core/ifwl_scrollbar.cpp | 788 |
1 files changed, 788 insertions, 0 deletions
diff --git a/xfa/fwl/core/ifwl_scrollbar.cpp b/xfa/fwl/core/ifwl_scrollbar.cpp new file mode 100644 index 0000000000..15478ff092 --- /dev/null +++ b/xfa/fwl/core/ifwl_scrollbar.cpp @@ -0,0 +1,788 @@ +// 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/core/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/ifwl_scrollbar.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) { + return new IFWL_ScrollBar(properties, pOuter); +} + +IFWL_ScrollBar::IFWL_ScrollBar(const CFWL_WidgetImpProperties& properties, + IFWL_Widget* pOuter) + : IFWL_Widget(properties, pOuter), + m_pTimerInfo(nullptr), + m_fRangeMin(0), + m_fRangeMax(-1), + m_fPageSize(0), + m_fStepSize(0), + m_fPos(0), + m_fTrackPos(0), + m_iMinButtonState(CFWL_PartState_Normal), + m_iMaxButtonState(CFWL_PartState_Normal), + m_iThumbButtonState(CFWL_PartState_Normal), + m_iMinTrackState(CFWL_PartState_Normal), + m_iMaxTrackState(CFWL_PartState_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(); +} + +IFWL_ScrollBar::~IFWL_ScrollBar() {} + +FWL_Error IFWL_ScrollBar::GetClassName(CFX_WideString& wsClass) const { + wsClass = FWL_CLASS_ScrollBar; + return FWL_Error::Succeeded; +} + +FWL_Type IFWL_ScrollBar::GetClassID() const { + return FWL_Type::ScrollBar; +} + +FWL_Error IFWL_ScrollBar::Initialize() { + if (IFWL_Widget::Initialize() != FWL_Error::Succeeded) + return FWL_Error::Indefinite; + + m_pDelegate = new CFWL_ScrollBarImpDelegate(this); + return FWL_Error::Succeeded; +} + +FWL_Error IFWL_ScrollBar::Finalize() { + delete m_pDelegate; + m_pDelegate = nullptr; + return IFWL_Widget::Finalize(); +} + +FWL_Error IFWL_ScrollBar::GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize) { + if (bAutoSize) { + rect.Set(0, 0, 0, 0); + FX_FLOAT* pfMinWidth = static_cast<FX_FLOAT*>( + GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth)); + if (!pfMinWidth) + return FWL_Error::Indefinite; + if (IsVertical()) { + rect.Set(0, 0, (*pfMinWidth), (*pfMinWidth) * 3); + } else { + rect.Set(0, 0, (*pfMinWidth) * 3, (*pfMinWidth)); + } + IFWL_Widget::GetWidgetRect(rect, TRUE); + } else { + rect = m_pProperties->m_rtWidget; + } + return FWL_Error::Succeeded; +} + +FWL_Error IFWL_ScrollBar::Update() { + if (IsLocked()) { + return FWL_Error::Indefinite; + } + if (!m_pProperties->m_pThemeProvider) { + m_pProperties->m_pThemeProvider = GetAvailableTheme(); + } + Layout(); + return FWL_Error::Succeeded; +} + +FWL_Error IFWL_ScrollBar::DrawWidget(CFX_Graphics* pGraphics, + const CFX_Matrix* pMatrix) { + if (!pGraphics) + return FWL_Error::Indefinite; + if (!m_pProperties->m_pThemeProvider) + return FWL_Error::Indefinite; + IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; + if (HasBorder()) { + DrawBorder(pGraphics, CFWL_Part::Border, pTheme, pMatrix); + } + if (HasEdge()) { + DrawEdge(pGraphics, CFWL_Part::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_Error::Succeeded; +} + +inline FX_BOOL IFWL_ScrollBar::IsVertical() { + return m_pProperties->m_dwStyleExes & FWL_STYLEEXT_SCB_Vert; +} + +FWL_Error IFWL_ScrollBar::GetRange(FX_FLOAT& fMin, FX_FLOAT& fMax) { + fMin = m_fRangeMin; + fMax = m_fRangeMax; + return FWL_Error::Succeeded; +} + +FWL_Error IFWL_ScrollBar::SetRange(FX_FLOAT fMin, FX_FLOAT fMax) { + m_fRangeMin = fMin; + m_fRangeMax = fMax; + return FWL_Error::Succeeded; +} + +FX_FLOAT IFWL_ScrollBar::GetPageSize() { + return m_fPageSize; +} + +FWL_Error IFWL_ScrollBar::SetPageSize(FX_FLOAT fPageSize) { + m_fPageSize = fPageSize; + return FWL_Error::Succeeded; +} + +FX_FLOAT IFWL_ScrollBar::GetStepSize() { + return m_fStepSize; +} + +FWL_Error IFWL_ScrollBar::SetStepSize(FX_FLOAT fStepSize) { + m_fStepSize = fStepSize; + return FWL_Error::Succeeded; +} + +FX_FLOAT IFWL_ScrollBar::GetPos() { + return m_fPos; +} + +FWL_Error IFWL_ScrollBar::SetPos(FX_FLOAT fPos) { + m_fPos = fPos; + return FWL_Error::Succeeded; +} + +FX_FLOAT IFWL_ScrollBar::GetTrackPos() { + return m_fTrackPos; +} + +FWL_Error IFWL_ScrollBar::SetTrackPos(FX_FLOAT fTrackPos) { + m_fTrackPos = fTrackPos; + CalcThumbButtonRect(m_rtThumb); + CalcMinTrackRect(m_rtMinTrack); + CalcMaxTrackRect(m_rtMaxTrack); + return FWL_Error::Succeeded; +} + +FX_BOOL IFWL_ScrollBar::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); +} + +void IFWL_ScrollBar::Run(IFWL_TimerInfo* pTimerInfo) { + if (m_pTimerInfo) + m_pTimerInfo->StopTimer(); + + if (!SendEvent()) + m_pTimerInfo = StartTimer(0, true); +} + +FWL_Error IFWL_ScrollBar::SetOuter(IFWL_Widget* pOuter) { + m_pOuter = pOuter; + return FWL_Error::Succeeded; +} + +void IFWL_ScrollBar::DrawTrack(CFX_Graphics* pGraphics, + IFWL_ThemeProvider* pTheme, + FX_BOOL bLower, + const CFX_Matrix* pMatrix) { + CFWL_ThemeBackground param; + param.m_pWidget = this; + param.m_iPart = bLower ? CFWL_Part::LowerTrack : CFWL_Part::UpperTrack; + param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) + ? CFWL_PartState_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 IFWL_ScrollBar::DrawArrowBtn(CFX_Graphics* pGraphics, + IFWL_ThemeProvider* pTheme, + FX_BOOL bMinBtn, + const CFX_Matrix* pMatrix) { + CFWL_ThemeBackground param; + param.m_pWidget = this; + param.m_iPart = bMinBtn ? CFWL_Part::ForeArrow : CFWL_Part::BackArrow; + param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) + ? CFWL_PartState_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 IFWL_ScrollBar::DrawThumb(CFX_Graphics* pGraphics, + IFWL_ThemeProvider* pTheme, + const CFX_Matrix* pMatrix) { + CFWL_ThemeBackground param; + param.m_pWidget = this; + param.m_iPart = CFWL_Part::Thumb; + param.m_dwStates = (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) + ? CFWL_PartState_Disabled + : m_iThumbButtonState; + param.m_pGraphics = pGraphics; + param.m_matrix.Concat(*pMatrix); + param.m_rtPart = m_rtThumb; + pTheme->DrawBackground(¶m); +} + +void IFWL_ScrollBar::Layout() { + IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; + CFWL_ThemePart part; + part.m_pWidget = this; + m_fMinThumb = *static_cast<FX_FLOAT*>( + pTheme->GetCapacity(&part, CFWL_WidgetCapacity::Size)); + m_bCustomLayout = pTheme->IsCustomizedLayout(this); + GetClientRect(m_rtClient); + CalcButtonLen(); + CalcMinButtonRect(m_rtMinBtn); + CalcMaxButtonRect(m_rtMaxBtn); + CalcThumbButtonRect(m_rtThumb); + CalcMinTrackRect(m_rtMinTrack); + CalcMaxTrackRect(m_rtMaxTrack); +} + +void IFWL_ScrollBar::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 IFWL_ScrollBar::CalcMinButtonRect(CFX_RectF& rect) { + if (m_bCustomLayout) + return; + + 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 IFWL_ScrollBar::CalcMaxButtonRect(CFX_RectF& rect) { + if (m_bCustomLayout) + return; + + 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 IFWL_ScrollBar::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 IFWL_ScrollBar::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 IFWL_ScrollBar::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 IFWL_ScrollBar::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 IFWL_ScrollBar::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 IFWL_ScrollBar::SendEvent() { + if (m_iMinButtonState == CFWL_PartState_Pressed) { + DoScroll(FWL_SCBCODE_StepBackward, m_fTrackPos); + return FALSE; + } + if (m_iMaxButtonState == CFWL_PartState_Pressed) { + DoScroll(FWL_SCBCODE_StepForward, m_fTrackPos); + return FALSE; + } + if (m_iMinTrackState == CFWL_PartState_Pressed) { + DoScroll(FWL_SCBCODE_PageBackward, m_fTrackPos); + return m_rtThumb.Contains(m_cpTrackPointX, m_cpTrackPointY); + } + if (m_iMaxTrackState == CFWL_PartState_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 IFWL_ScrollBar::OnScroll(uint32_t dwCode, FX_FLOAT fPos) { + FX_BOOL bRet = TRUE; + CFWL_EvtScroll ev; + ev.m_iScrollCode = dwCode; + ev.m_pSrcTarget = this; + ev.m_fPos = fPos; + ev.m_pRet = &bRet; + DispatchEvent(&ev); + return bRet; +} + +CFWL_ScrollBarImpDelegate::CFWL_ScrollBarImpDelegate(IFWL_ScrollBar* pOwner) + : m_pOwner(pOwner) {} + +void CFWL_ScrollBarImpDelegate::OnProcessMessage(CFWL_Message* pMessage) { + if (!pMessage) + return; + + CFWL_MessageType dwMsgCode = pMessage->GetClassID(); + if (dwMsgCode == CFWL_MessageType::Mouse) { + CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage); + switch (pMsg->m_dwCmd) { + case FWL_MouseCommand::LeftButtonDown: { + OnLButtonDown(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); + break; + } + case FWL_MouseCommand::LeftButtonUp: { + OnLButtonUp(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); + break; + } + case FWL_MouseCommand::Move: { + OnMouseMove(pMsg->m_dwFlags, pMsg->m_fx, pMsg->m_fy); + break; + } + case FWL_MouseCommand::Leave: { + OnMouseLeave(); + break; + } + default: { break; } + } + } else if (dwMsgCode == CFWL_MessageType::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); + } +} + +void CFWL_ScrollBarImpDelegate::OnDrawWidget(CFX_Graphics* pGraphics, + const CFX_Matrix* pMatrix) { + 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_pTimerInfo = m_pOwner->StartTimer(FWL_SCROLLBAR_Elapse, true); +} + +void CFWL_ScrollBarImpDelegate::OnLButtonUp(uint32_t dwFlags, + FX_FLOAT fx, + FX_FLOAT fy) { + m_pOwner->m_pTimerInfo->StopTimer(); + 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 == CFWL_PartState_Pressed) { + return; + } + iState = CFWL_PartState_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) ? CFWL_PartState_Hovered : CFWL_PartState_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) ? CFWL_PartState_Hovered + : CFWL_PartState_Normal; + if (iState == iNewState) { + return; + } + iState = iNewState; + m_pOwner->Repaint(&rtItem); + } else if ((2 == iItem) && + (m_pOwner->m_iThumbButtonState == CFWL_PartState_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 == CFWL_PartState_Normal) { + return; + } + iState = CFWL_PartState_Normal; + m_pOwner->Repaint(&rtItem); +} + +void CFWL_ScrollBarImpDelegate::DoMouseHover(int32_t iItem, + const CFX_RectF& rtItem, + int32_t& iState) { + if (iState == CFWL_PartState_Hovered) { + return; + } + iState = CFWL_PartState_Hovered; + m_pOwner->Repaint(&rtItem); +} |