| // Copyright 2014 The PDFium Authors |
| // 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/cfwl_listbox.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| |
| #include "core/fxcrt/stl_util.h" |
| #include "third_party/base/numerics/safe_conversions.h" |
| #include "v8/include/cppgc/visitor.h" |
| #include "xfa/fde/cfde_textout.h" |
| #include "xfa/fgas/graphics/cfgas_gegraphics.h" |
| #include "xfa/fwl/cfwl_app.h" |
| #include "xfa/fwl/cfwl_messagekey.h" |
| #include "xfa/fwl/cfwl_messagemouse.h" |
| #include "xfa/fwl/cfwl_messagemousewheel.h" |
| #include "xfa/fwl/cfwl_themebackground.h" |
| #include "xfa/fwl/cfwl_themepart.h" |
| #include "xfa/fwl/cfwl_themetext.h" |
| #include "xfa/fwl/fwl_widgetdef.h" |
| #include "xfa/fwl/ifwl_themeprovider.h" |
| |
| namespace { |
| |
| const int kItemTextMargin = 2; |
| |
| } // namespace |
| |
| CFWL_ListBox::CFWL_ListBox(CFWL_App* app, |
| const Properties& properties, |
| CFWL_Widget* pOuter) |
| : CFWL_Widget(app, properties, pOuter) {} |
| |
| CFWL_ListBox::~CFWL_ListBox() = default; |
| |
| void CFWL_ListBox::Trace(cppgc::Visitor* visitor) const { |
| CFWL_Widget::Trace(visitor); |
| visitor->Trace(m_pHorzScrollBar); |
| visitor->Trace(m_pVertScrollBar); |
| } |
| |
| FWL_Type CFWL_ListBox::GetClassID() const { |
| return FWL_Type::ListBox; |
| } |
| |
| void CFWL_ListBox::Update() { |
| if (IsLocked()) |
| return; |
| |
| switch (m_Properties.m_dwStyleExts & FWL_STYLEEXT_LTB_AlignMask) { |
| case FWL_STYLEEXT_LTB_LeftAlign: |
| m_iTTOAligns = FDE_TextAlignment::kCenterLeft; |
| break; |
| case FWL_STYLEEXT_LTB_RightAlign: |
| m_iTTOAligns = FDE_TextAlignment::kCenterRight; |
| break; |
| case FWL_STYLEEXT_LTB_CenterAlign: |
| default: |
| m_iTTOAligns = FDE_TextAlignment::kCenter; |
| break; |
| } |
| m_TTOStyles.single_line_ = true; |
| m_fScorllBarWidth = GetScrollWidth(); |
| CalcSize(); |
| } |
| |
| FWL_WidgetHit CFWL_ListBox::HitTest(const CFX_PointF& point) { |
| if (IsShowHorzScrollBar()) { |
| CFX_RectF rect = m_pHorzScrollBar->GetWidgetRect(); |
| if (rect.Contains(point)) |
| return FWL_WidgetHit::HScrollBar; |
| } |
| if (IsShowVertScrollBar()) { |
| CFX_RectF rect = m_pVertScrollBar->GetWidgetRect(); |
| if (rect.Contains(point)) |
| return FWL_WidgetHit::VScrollBar; |
| } |
| if (m_ClientRect.Contains(point)) |
| return FWL_WidgetHit::Client; |
| return FWL_WidgetHit::Unknown; |
| } |
| |
| void CFWL_ListBox::DrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) { |
| if (!pGraphics) |
| return; |
| |
| CFGAS_GEGraphics::StateRestorer restorer(pGraphics); |
| if (HasBorder()) |
| DrawBorder(pGraphics, CFWL_ThemePart::Part::kBorder, matrix); |
| |
| CFX_RectF rtClip(m_ContentRect); |
| if (IsShowHorzScrollBar()) |
| rtClip.height -= m_fScorllBarWidth; |
| if (IsShowVertScrollBar()) |
| rtClip.width -= m_fScorllBarWidth; |
| |
| pGraphics->SetClipRect(matrix.TransformRect(rtClip)); |
| if ((m_Properties.m_dwStyles & FWL_STYLE_WGT_NoBackground) == 0) |
| DrawBkground(pGraphics, matrix); |
| |
| DrawItems(pGraphics, matrix); |
| } |
| |
| int32_t CFWL_ListBox::CountSelItems() { |
| int32_t iRet = 0; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (pItem && pItem->IsSelected()) |
| iRet++; |
| } |
| return iRet; |
| } |
| |
| CFWL_ListBox::Item* CFWL_ListBox::GetSelItem(int32_t nIndexSel) { |
| int32_t idx = GetSelIndex(nIndexSel); |
| if (idx < 0) |
| return nullptr; |
| return GetItem(this, idx); |
| } |
| |
| int32_t CFWL_ListBox::GetSelIndex(int32_t nIndex) { |
| int32_t index = 0; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (!pItem) |
| return -1; |
| if (pItem->IsSelected()) { |
| if (index == nIndex) |
| return i; |
| index++; |
| } |
| } |
| return -1; |
| } |
| |
| void CFWL_ListBox::SetSelItem(Item* pItem, bool bSelect) { |
| if (!pItem) { |
| if (bSelect) { |
| SelectAll(); |
| } else { |
| ClearSelection(); |
| SetFocusItem(nullptr); |
| } |
| return; |
| } |
| if (IsMultiSelection()) |
| pItem->SetSelected(bSelect); |
| else |
| SetSelection(pItem, pItem, bSelect); |
| } |
| |
| CFWL_ListBox::Item* CFWL_ListBox::GetListItem(Item* pItem, |
| XFA_FWL_VKEYCODE dwKeyCode) { |
| Item* hRet = nullptr; |
| switch (dwKeyCode) { |
| case XFA_FWL_VKEY_Up: |
| case XFA_FWL_VKEY_Down: |
| case XFA_FWL_VKEY_Home: |
| case XFA_FWL_VKEY_End: { |
| const bool bUp = dwKeyCode == XFA_FWL_VKEY_Up; |
| const bool bDown = dwKeyCode == XFA_FWL_VKEY_Down; |
| const bool bHome = dwKeyCode == XFA_FWL_VKEY_Home; |
| int32_t iDstItem = -1; |
| if (bUp || bDown) { |
| int32_t index = GetItemIndex(this, pItem); |
| iDstItem = dwKeyCode == XFA_FWL_VKEY_Up ? index - 1 : index + 1; |
| } else if (bHome) { |
| iDstItem = 0; |
| } else { |
| int32_t iCount = CountItems(this); |
| iDstItem = iCount - 1; |
| } |
| hRet = GetItem(this, iDstItem); |
| break; |
| } |
| default: |
| break; |
| } |
| return hRet; |
| } |
| |
| void CFWL_ListBox::SetSelection(Item* hStart, Item* hEnd, bool bSelected) { |
| int32_t iStart = GetItemIndex(this, hStart); |
| int32_t iEnd = GetItemIndex(this, hEnd); |
| if (iStart > iEnd) |
| std::swap(iStart, iEnd); |
| if (bSelected) { |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (pItem) |
| pItem->SetSelected(false); |
| } |
| } |
| while (iStart <= iEnd) { |
| Item* pItem = GetItem(this, iStart); |
| if (pItem) |
| pItem->SetSelected(bSelected); |
| ++iStart; |
| } |
| } |
| |
| bool CFWL_ListBox::IsMultiSelection() const { |
| return m_Properties.m_dwStyleExts & FWL_STYLEEXT_LTB_MultiSelection; |
| } |
| |
| void CFWL_ListBox::ClearSelection() { |
| bool bMulti = IsMultiSelection(); |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| if (!pItem->IsSelected()) |
| continue; |
| pItem->SetSelected(false); |
| if (!bMulti) |
| return; |
| } |
| } |
| |
| void CFWL_ListBox::SelectAll() { |
| if (!IsMultiSelection()) |
| return; |
| |
| int32_t iCount = CountItems(this); |
| if (iCount <= 0) |
| return; |
| |
| Item* pItemStart = GetItem(this, 0); |
| Item* pItemEnd = GetItem(this, iCount - 1); |
| SetSelection(pItemStart, pItemEnd, false); |
| } |
| |
| CFWL_ListBox::Item* CFWL_ListBox::GetFocusedItem() { |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (!pItem) |
| break; |
| if (pItem->IsFocused()) |
| return pItem; |
| } |
| return nullptr; |
| } |
| |
| void CFWL_ListBox::SetFocusItem(Item* pItem) { |
| Item* hFocus = GetFocusedItem(); |
| if (pItem == hFocus) |
| return; |
| |
| if (hFocus) |
| hFocus->SetFocused(false); |
| if (pItem) |
| pItem->SetFocused(true); |
| } |
| |
| CFWL_ListBox::Item* CFWL_ListBox::GetItemAtPoint(const CFX_PointF& point) { |
| CFX_PointF pos = point - m_ContentRect.TopLeft(); |
| float fPosX = 0.0f; |
| if (m_pHorzScrollBar) |
| fPosX = m_pHorzScrollBar->GetPos(); |
| |
| float fPosY = 0.0; |
| if (m_pVertScrollBar) |
| fPosY = m_pVertScrollBar->GetPos(); |
| |
| int32_t nCount = CountItems(this); |
| for (int32_t i = 0; i < nCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| CFX_RectF rtItem = pItem->GetRect(); |
| rtItem.Offset(-fPosX, -fPosY); |
| if (rtItem.Contains(pos)) |
| return pItem; |
| } |
| return nullptr; |
| } |
| |
| bool CFWL_ListBox::ScrollToVisible(Item* pItem) { |
| if (!m_pVertScrollBar) |
| return false; |
| |
| CFX_RectF rtItem = pItem ? pItem->GetRect() : CFX_RectF(); |
| bool bScroll = false; |
| float fPosY = m_pVertScrollBar->GetPos(); |
| rtItem.Offset(0, -fPosY + m_ContentRect.top); |
| if (rtItem.top < m_ContentRect.top) { |
| fPosY += rtItem.top - m_ContentRect.top; |
| bScroll = true; |
| } else if (rtItem.bottom() > m_ContentRect.bottom()) { |
| fPosY += rtItem.bottom() - m_ContentRect.bottom(); |
| bScroll = true; |
| } |
| if (!bScroll) |
| return false; |
| |
| m_pVertScrollBar->SetPos(fPosY); |
| m_pVertScrollBar->SetTrackPos(fPosY); |
| RepaintRect(m_ClientRect); |
| return true; |
| } |
| |
| void CFWL_ListBox::DrawBkground(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& mtMatrix) { |
| if (!pGraphics) |
| return; |
| |
| CFWL_ThemeBackground param(CFWL_ThemePart::Part::kBackground, this, |
| pGraphics); |
| param.m_matrix = mtMatrix; |
| param.m_PartRect = m_ClientRect; |
| if (IsShowHorzScrollBar() && IsShowVertScrollBar()) |
| param.m_pRtData = &m_StaticRect; |
| if (!IsEnabled()) |
| param.m_dwStates = CFWL_PartState::kDisabled; |
| GetThemeProvider()->DrawBackground(param); |
| } |
| |
| void CFWL_ListBox::DrawItems(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& mtMatrix) { |
| float fPosX = 0.0f; |
| if (m_pHorzScrollBar) |
| fPosX = m_pHorzScrollBar->GetPos(); |
| |
| float fPosY = 0.0f; |
| if (m_pVertScrollBar) |
| fPosY = m_pVertScrollBar->GetPos(); |
| |
| CFX_RectF rtView(m_ContentRect); |
| if (m_pHorzScrollBar) |
| rtView.height -= m_fScorllBarWidth; |
| if (m_pVertScrollBar) |
| rtView.width -= m_fScorllBarWidth; |
| |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListBox::Item* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| CFX_RectF rtItem = pItem->GetRect(); |
| rtItem.Offset(m_ContentRect.left - fPosX, m_ContentRect.top - fPosY); |
| if (rtItem.bottom() < m_ContentRect.top) |
| continue; |
| if (rtItem.top >= m_ContentRect.bottom()) |
| break; |
| DrawItem(pGraphics, pItem, i, rtItem, mtMatrix); |
| } |
| } |
| |
| void CFWL_ListBox::DrawItem(CFGAS_GEGraphics* pGraphics, |
| Item* pItem, |
| int32_t Index, |
| const CFX_RectF& rtItem, |
| const CFX_Matrix& mtMatrix) { |
| Mask<CFWL_PartState> dwPartStates = CFWL_PartState::kNormal; |
| if (m_Properties.m_dwStates & FWL_STATE_WGT_Disabled) |
| dwPartStates = CFWL_PartState::kDisabled; |
| else if (pItem && pItem->IsSelected()) |
| dwPartStates = CFWL_PartState::kSelected; |
| |
| if ((m_Properties.m_dwStates & FWL_STATE_WGT_Focused) && pItem && |
| pItem->IsFocused()) { |
| dwPartStates |= CFWL_PartState::kFocused; |
| } |
| |
| CFX_RectF rtFocus(rtItem); // Must outlive |bg_param|. |
| CFWL_ThemeBackground bg_param(CFWL_ThemePart::Part::kListItem, this, |
| pGraphics); |
| bg_param.m_dwStates = dwPartStates; |
| bg_param.m_matrix = mtMatrix; |
| bg_param.m_PartRect = rtItem; |
| bg_param.m_bMaximize = true; |
| bg_param.m_pRtData = &rtFocus; |
| if (m_pVertScrollBar && !m_pHorzScrollBar && |
| (dwPartStates & CFWL_PartState::kFocused)) { |
| bg_param.m_PartRect.left += 1; |
| bg_param.m_PartRect.width -= (m_fScorllBarWidth + 1); |
| rtFocus.Deflate(0.5, 0.5, 1 + m_fScorllBarWidth, 1); |
| } |
| |
| IFWL_ThemeProvider* pTheme = GetThemeProvider(); |
| pTheme->DrawBackground(bg_param); |
| if (!pItem) |
| return; |
| |
| WideString wsText = pItem->GetText(); |
| if (wsText.GetLength() <= 0) |
| return; |
| |
| CFX_RectF rtText(rtItem); |
| rtText.Deflate(kItemTextMargin, kItemTextMargin); |
| |
| CFWL_ThemeText textParam(CFWL_ThemePart::Part::kListItem, this, pGraphics); |
| textParam.m_dwStates = dwPartStates; |
| textParam.m_matrix = mtMatrix; |
| textParam.m_PartRect = rtText; |
| textParam.m_wsText = std::move(wsText); |
| textParam.m_dwTTOStyles = m_TTOStyles; |
| textParam.m_iTTOAlign = m_iTTOAligns; |
| textParam.m_bMaximize = true; |
| pTheme->DrawText(textParam); |
| } |
| |
| CFX_SizeF CFWL_ListBox::CalcSize() { |
| m_ClientRect = GetClientRect(); |
| m_ContentRect = m_ClientRect; |
| CFX_RectF rtUIMargin; |
| if (!GetOuter()) { |
| CFWL_ThemePart part(CFWL_ThemePart::Part::kNone, this); |
| CFX_RectF pUIMargin = GetThemeProvider()->GetUIMargin(part); |
| m_ContentRect.Deflate(pUIMargin.left, pUIMargin.top, pUIMargin.width, |
| pUIMargin.height); |
| } |
| |
| float fWidth = GetMaxTextWidth(); |
| fWidth += 2 * kItemTextMargin; |
| |
| float fActualWidth = m_ClientRect.width - rtUIMargin.left - rtUIMargin.width; |
| fWidth = std::max(fWidth, fActualWidth); |
| m_fItemHeight = CalcItemHeight(); |
| |
| int32_t iCount = CountItems(this); |
| CFX_SizeF fs; |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* htem = GetItem(this, i); |
| UpdateItemSize(htem, fs, fWidth, m_fItemHeight); |
| } |
| |
| float iHeight = m_ClientRect.height; |
| bool bShowVertScr = false; |
| bool bShowHorzScr = false; |
| if (!bShowVertScr && (m_Properties.m_dwStyles & FWL_STYLE_WGT_VScroll)) |
| bShowVertScr = (fs.height > iHeight); |
| |
| float fMax = 0.0f; |
| if (bShowVertScr) { |
| if (!m_pVertScrollBar) |
| InitVerticalScrollBar(); |
| |
| CFX_RectF rtScrollBar(m_ClientRect.right() - m_fScorllBarWidth, |
| m_ClientRect.top, m_fScorllBarWidth, |
| m_ClientRect.height - 1); |
| if (bShowHorzScr) |
| rtScrollBar.height -= m_fScorllBarWidth; |
| |
| m_pVertScrollBar->SetWidgetRect(rtScrollBar); |
| fMax = std::max(fs.height - m_ContentRect.height, m_fItemHeight); |
| |
| m_pVertScrollBar->SetRange(0.0f, fMax); |
| m_pVertScrollBar->SetPageSize(rtScrollBar.height * 9 / 10); |
| m_pVertScrollBar->SetStepSize(m_fItemHeight); |
| |
| float fPos = std::clamp(m_pVertScrollBar->GetPos(), 0.0f, fMax); |
| m_pVertScrollBar->SetPos(fPos); |
| m_pVertScrollBar->SetTrackPos(fPos); |
| if ((m_Properties.m_dwStyleExts & FWL_STYLEEXT_LTB_ShowScrollBarFocus) == |
| 0 || |
| (m_Properties.m_dwStates & FWL_STATE_WGT_Focused)) { |
| m_pVertScrollBar->RemoveStates(FWL_STATE_WGT_Invisible); |
| } |
| m_pVertScrollBar->Update(); |
| } else if (m_pVertScrollBar) { |
| m_pVertScrollBar->SetPos(0); |
| m_pVertScrollBar->SetTrackPos(0); |
| m_pVertScrollBar->SetStates(FWL_STATE_WGT_Invisible); |
| } |
| if (bShowHorzScr) { |
| if (!m_pHorzScrollBar) |
| InitHorizontalScrollBar(); |
| |
| CFX_RectF rtScrollBar(m_ClientRect.left, |
| m_ClientRect.bottom() - m_fScorllBarWidth, |
| m_ClientRect.width, m_fScorllBarWidth); |
| if (bShowVertScr) |
| rtScrollBar.width -= m_fScorllBarWidth; |
| |
| m_pHorzScrollBar->SetWidgetRect(rtScrollBar); |
| fMax = fs.width - rtScrollBar.width; |
| m_pHorzScrollBar->SetRange(0.0f, fMax); |
| m_pHorzScrollBar->SetPageSize(fWidth * 9 / 10); |
| m_pHorzScrollBar->SetStepSize(fWidth / 10); |
| |
| float fPos = std::clamp(m_pHorzScrollBar->GetPos(), 0.0f, fMax); |
| m_pHorzScrollBar->SetPos(fPos); |
| m_pHorzScrollBar->SetTrackPos(fPos); |
| if ((m_Properties.m_dwStyleExts & FWL_STYLEEXT_LTB_ShowScrollBarFocus) == |
| 0 || |
| (m_Properties.m_dwStates & FWL_STATE_WGT_Focused)) { |
| m_pHorzScrollBar->RemoveStates(FWL_STATE_WGT_Invisible); |
| } |
| m_pHorzScrollBar->Update(); |
| } else if (m_pHorzScrollBar) { |
| m_pHorzScrollBar->SetPos(0); |
| m_pHorzScrollBar->SetTrackPos(0); |
| m_pHorzScrollBar->SetStates(FWL_STATE_WGT_Invisible); |
| } |
| if (bShowVertScr && bShowHorzScr) { |
| m_StaticRect = CFX_RectF(m_ClientRect.right() - m_fScorllBarWidth, |
| m_ClientRect.bottom() - m_fScorllBarWidth, |
| m_fScorllBarWidth, m_fScorllBarWidth); |
| } |
| return fs; |
| } |
| |
| void CFWL_ListBox::UpdateItemSize(Item* pItem, |
| CFX_SizeF& size, |
| float fWidth, |
| float fItemHeight) const { |
| if (pItem) { |
| CFX_RectF rtItem(0, size.height, fWidth, fItemHeight); |
| pItem->SetRect(rtItem); |
| } |
| size.width = fWidth; |
| size.height += fItemHeight; |
| } |
| |
| float CFWL_ListBox::GetMaxTextWidth() { |
| float fRet = 0.0f; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| Item* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| CFX_SizeF sz = CalcTextSize(pItem->GetText(), false); |
| fRet = std::max(fRet, sz.width); |
| } |
| return fRet; |
| } |
| |
| float CFWL_ListBox::GetScrollWidth() { |
| return GetThemeProvider()->GetScrollBarWidth(); |
| } |
| |
| float CFWL_ListBox::CalcItemHeight() { |
| CFWL_ThemePart part(CFWL_ThemePart::Part::kNone, this); |
| return GetThemeProvider()->GetFontSize(part) + 2 * kItemTextMargin; |
| } |
| |
| void CFWL_ListBox::InitVerticalScrollBar() { |
| if (m_pVertScrollBar) |
| return; |
| |
| m_pVertScrollBar = cppgc::MakeGarbageCollected<CFWL_ScrollBar>( |
| GetFWLApp()->GetHeap()->GetAllocationHandle(), GetFWLApp(), |
| Properties{0, FWL_STYLEEXT_SCB_Vert, FWL_STATE_WGT_Invisible}, this); |
| } |
| |
| void CFWL_ListBox::InitHorizontalScrollBar() { |
| if (m_pHorzScrollBar) |
| return; |
| |
| m_pHorzScrollBar = cppgc::MakeGarbageCollected<CFWL_ScrollBar>( |
| GetFWLApp()->GetHeap()->GetAllocationHandle(), GetFWLApp(), |
| Properties{0, FWL_STYLEEXT_SCB_Horz, FWL_STATE_WGT_Invisible}, this); |
| } |
| |
| bool CFWL_ListBox::IsShowVertScrollBar() const { |
| return m_pVertScrollBar && m_pVertScrollBar->IsVisible() && |
| ScrollBarPropertiesPresent(); |
| } |
| |
| bool CFWL_ListBox::IsShowHorzScrollBar() const { |
| return m_pHorzScrollBar && m_pHorzScrollBar->IsVisible() && |
| ScrollBarPropertiesPresent(); |
| } |
| |
| bool CFWL_ListBox::ScrollBarPropertiesPresent() const { |
| return !(m_Properties.m_dwStyleExts & FWL_STYLEEXT_LTB_ShowScrollBarFocus) || |
| (m_Properties.m_dwStates & FWL_STATE_WGT_Focused); |
| } |
| |
| void CFWL_ListBox::OnProcessMessage(CFWL_Message* pMessage) { |
| if (!IsEnabled()) |
| return; |
| |
| switch (pMessage->GetType()) { |
| case CFWL_Message::Type::kSetFocus: |
| OnFocusGained(); |
| break; |
| case CFWL_Message::Type::kKillFocus: |
| OnFocusLost(); |
| break; |
| case CFWL_Message::Type::kMouse: { |
| CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); |
| switch (pMsg->m_dwCmd) { |
| case CFWL_MessageMouse::MouseCommand::kLeftButtonDown: |
| OnLButtonDown(pMsg); |
| break; |
| case CFWL_MessageMouse::MouseCommand::kLeftButtonUp: |
| OnLButtonUp(pMsg); |
| break; |
| default: |
| break; |
| } |
| break; |
| } |
| case CFWL_Message::Type::kMouseWheel: |
| OnMouseWheel(static_cast<CFWL_MessageMouseWheel*>(pMessage)); |
| break; |
| case CFWL_Message::Type::kKey: { |
| CFWL_MessageKey* pMsg = static_cast<CFWL_MessageKey*>(pMessage); |
| if (pMsg->m_dwCmd == CFWL_MessageKey::KeyCommand::kKeyDown) |
| OnKeyDown(pMsg); |
| break; |
| } |
| } |
| // Dst target could be |this|, continue only if not destroyed by above. |
| if (pMessage->GetDstTarget()) |
| CFWL_Widget::OnProcessMessage(pMessage); |
| } |
| |
| void CFWL_ListBox::OnProcessEvent(CFWL_Event* pEvent) { |
| if (!pEvent) |
| return; |
| if (pEvent->GetType() != CFWL_Event::Type::Scroll) |
| return; |
| |
| CFWL_Widget* pSrcTarget = pEvent->GetSrcTarget(); |
| if ((pSrcTarget == m_pVertScrollBar && m_pVertScrollBar) || |
| (pSrcTarget == m_pHorzScrollBar && m_pHorzScrollBar)) { |
| CFWL_EventScroll* pScrollEvent = static_cast<CFWL_EventScroll*>(pEvent); |
| OnScroll(static_cast<CFWL_ScrollBar*>(pSrcTarget), |
| pScrollEvent->GetScrollCode(), pScrollEvent->GetPos()); |
| } |
| } |
| |
| void CFWL_ListBox::OnDrawWidget(CFGAS_GEGraphics* pGraphics, |
| const CFX_Matrix& matrix) { |
| DrawWidget(pGraphics, matrix); |
| } |
| |
| void CFWL_ListBox::OnFocusGained() { |
| if (GetStyleExts() & FWL_STYLEEXT_LTB_ShowScrollBarFocus) { |
| if (m_pVertScrollBar) |
| m_pVertScrollBar->RemoveStates(FWL_STATE_WGT_Invisible); |
| if (m_pHorzScrollBar) |
| m_pHorzScrollBar->RemoveStates(FWL_STATE_WGT_Invisible); |
| } |
| m_Properties.m_dwStates |= FWL_STATE_WGT_Focused; |
| RepaintRect(m_ClientRect); |
| } |
| |
| void CFWL_ListBox::OnFocusLost() { |
| if (GetStyleExts() & FWL_STYLEEXT_LTB_ShowScrollBarFocus) { |
| if (m_pVertScrollBar) |
| m_pVertScrollBar->SetStates(FWL_STATE_WGT_Invisible); |
| if (m_pHorzScrollBar) |
| m_pHorzScrollBar->SetStates(FWL_STATE_WGT_Invisible); |
| } |
| m_Properties.m_dwStates &= ~FWL_STATE_WGT_Focused; |
| RepaintRect(m_ClientRect); |
| } |
| |
| void CFWL_ListBox::OnLButtonDown(CFWL_MessageMouse* pMsg) { |
| m_bLButtonDown = true; |
| |
| Item* pItem = GetItemAtPoint(pMsg->m_pos); |
| if (!pItem) |
| return; |
| |
| if (IsMultiSelection()) { |
| if (pMsg->m_dwFlags & XFA_FWL_KeyFlag::kCtrl) { |
| pItem->SetSelected(!pItem->IsSelected()); |
| m_hAnchor = pItem; |
| } else if (pMsg->m_dwFlags & XFA_FWL_KeyFlag::kShift) { |
| if (m_hAnchor) |
| SetSelection(m_hAnchor, pItem, true); |
| else |
| pItem->SetSelected(true); |
| } else { |
| SetSelection(pItem, pItem, true); |
| m_hAnchor = pItem; |
| } |
| } else { |
| SetSelection(pItem, pItem, true); |
| } |
| |
| SetFocusItem(pItem); |
| ScrollToVisible(pItem); |
| SetGrab(true); |
| RepaintRect(m_ClientRect); |
| } |
| |
| void CFWL_ListBox::OnLButtonUp(CFWL_MessageMouse* pMsg) { |
| if (!m_bLButtonDown) |
| return; |
| |
| m_bLButtonDown = false; |
| SetGrab(false); |
| } |
| |
| void CFWL_ListBox::OnMouseWheel(CFWL_MessageMouseWheel* pMsg) { |
| if (IsShowVertScrollBar()) |
| m_pVertScrollBar->GetDelegate()->OnProcessMessage(pMsg); |
| } |
| |
| void CFWL_ListBox::OnKeyDown(CFWL_MessageKey* pMsg) { |
| auto dwKeyCode = static_cast<XFA_FWL_VKEYCODE>(pMsg->m_dwKeyCodeOrChar); |
| switch (dwKeyCode) { |
| case XFA_FWL_VKEY_Tab: |
| case XFA_FWL_VKEY_Up: |
| case XFA_FWL_VKEY_Down: |
| case XFA_FWL_VKEY_Home: |
| case XFA_FWL_VKEY_End: { |
| Item* pItem = GetListItem(GetFocusedItem(), dwKeyCode); |
| bool bShift = !!(pMsg->m_dwFlags & XFA_FWL_KeyFlag::kShift); |
| bool bCtrl = !!(pMsg->m_dwFlags & XFA_FWL_KeyFlag::kCtrl); |
| OnVK(pItem, bShift, bCtrl); |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| |
| void CFWL_ListBox::OnVK(Item* pItem, bool bShift, bool bCtrl) { |
| if (!pItem) |
| return; |
| |
| if (IsMultiSelection()) { |
| if (bCtrl) { |
| // Do nothing. |
| } else if (bShift) { |
| if (m_hAnchor) |
| SetSelection(m_hAnchor, pItem, true); |
| else |
| pItem->SetSelected(true); |
| } else { |
| SetSelection(pItem, pItem, true); |
| m_hAnchor = pItem; |
| } |
| } else { |
| SetSelection(pItem, pItem, true); |
| } |
| |
| SetFocusItem(pItem); |
| ScrollToVisible(pItem); |
| RepaintRect(CFX_RectF(0, 0, m_WidgetRect.width, m_WidgetRect.height)); |
| } |
| |
| bool CFWL_ListBox::OnScroll(CFWL_ScrollBar* pScrollBar, |
| CFWL_EventScroll::Code dwCode, |
| float fPos) { |
| float fMin; |
| float fMax; |
| pScrollBar->GetRange(&fMin, &fMax); |
| float iCurPos = pScrollBar->GetPos(); |
| float fStep = pScrollBar->GetStepSize(); |
| switch (dwCode) { |
| case CFWL_EventScroll::Code::Min: { |
| fPos = fMin; |
| break; |
| } |
| case CFWL_EventScroll::Code::Max: { |
| fPos = fMax; |
| break; |
| } |
| case CFWL_EventScroll::Code::StepBackward: { |
| fPos -= fStep; |
| if (fPos < fMin + fStep / 2) |
| fPos = fMin; |
| break; |
| } |
| case CFWL_EventScroll::Code::StepForward: { |
| fPos += fStep; |
| if (fPos > fMax - fStep / 2) |
| fPos = fMax; |
| break; |
| } |
| case CFWL_EventScroll::Code::PageBackward: { |
| fPos -= pScrollBar->GetPageSize(); |
| if (fPos < fMin) |
| fPos = fMin; |
| break; |
| } |
| case CFWL_EventScroll::Code::PageForward: { |
| fPos += pScrollBar->GetPageSize(); |
| if (fPos > fMax) |
| fPos = fMax; |
| break; |
| } |
| case CFWL_EventScroll::Code::Pos: |
| case CFWL_EventScroll::Code::TrackPos: |
| case CFWL_EventScroll::Code::None: |
| break; |
| case CFWL_EventScroll::Code::EndScroll: |
| return false; |
| } |
| if (iCurPos != fPos) { |
| pScrollBar->SetPos(fPos); |
| pScrollBar->SetTrackPos(fPos); |
| RepaintRect(m_ClientRect); |
| } |
| return true; |
| } |
| |
| int32_t CFWL_ListBox::CountItems(const CFWL_Widget* pWidget) const { |
| return fxcrt::CollectionSize<int32_t>(m_ItemArray); |
| } |
| |
| CFWL_ListBox::Item* CFWL_ListBox::GetItem(const CFWL_Widget* pWidget, |
| int32_t nIndex) const { |
| if (nIndex < 0 || nIndex >= CountItems(pWidget)) |
| return nullptr; |
| return m_ItemArray[nIndex].get(); |
| } |
| |
| int32_t CFWL_ListBox::GetItemIndex(CFWL_Widget* pWidget, Item* pItem) { |
| auto it = std::find_if(m_ItemArray.begin(), m_ItemArray.end(), |
| [pItem](const std::unique_ptr<Item>& candidate) { |
| return candidate.get() == pItem; |
| }); |
| return it != m_ItemArray.end() |
| ? pdfium::base::checked_cast<int32_t>(it - m_ItemArray.begin()) |
| : -1; |
| } |
| |
| CFWL_ListBox::Item* CFWL_ListBox::AddString(const WideString& wsAdd) { |
| m_ItemArray.push_back(std::make_unique<Item>(wsAdd)); |
| return m_ItemArray.back().get(); |
| } |
| |
| void CFWL_ListBox::RemoveAt(int32_t iIndex) { |
| if (iIndex < 0 || static_cast<size_t>(iIndex) >= m_ItemArray.size()) |
| return; |
| m_ItemArray.erase(m_ItemArray.begin() + iIndex); |
| } |
| |
| void CFWL_ListBox::DeleteString(Item* pItem) { |
| int32_t nIndex = GetItemIndex(this, pItem); |
| if (nIndex < 0 || static_cast<size_t>(nIndex) >= m_ItemArray.size()) |
| return; |
| |
| int32_t iSel = nIndex + 1; |
| if (iSel >= CountItems(this)) |
| iSel = nIndex - 1; |
| if (iSel >= 0) { |
| Item* item = GetItem(this, iSel); |
| if (item) |
| item->SetSelected(true); |
| } |
| m_ItemArray.erase(m_ItemArray.begin() + nIndex); |
| } |
| |
| void CFWL_ListBox::DeleteAll() { |
| m_ItemArray.clear(); |
| } |
| |
| CFWL_ListBox::Item::Item(const WideString& text) : m_wsText(text) {} |
| |
| CFWL_ListBox::Item::~Item() = default; |