| // 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_listbox.h" |
| |
| #include <algorithm> |
| #include <memory> |
| #include <utility> |
| |
| #include "third_party/base/ptr_util.h" |
| #include "third_party/base/stl_util.h" |
| #include "xfa/fde/tto/fde_textout.h" |
| #include "xfa/fwl/core/cfwl_app.h" |
| #include "xfa/fwl/core/cfwl_msgkey.h" |
| #include "xfa/fwl/core/cfwl_msgmouse.h" |
| #include "xfa/fwl/core/cfwl_msgmousewheel.h" |
| #include "xfa/fwl/core/cfwl_themebackground.h" |
| #include "xfa/fwl/core/cfwl_themepart.h" |
| #include "xfa/fwl/core/cfwl_themetext.h" |
| #include "xfa/fwl/core/ifwl_themeprovider.h" |
| |
| namespace { |
| |
| const int kItemTextMargin = 2; |
| |
| } // namespace |
| |
| IFWL_ListBox::IFWL_ListBox(const CFWL_App* app, |
| std::unique_ptr<CFWL_WidgetProperties> properties, |
| IFWL_Widget* pOuter) |
| : IFWL_Widget(app, std::move(properties), pOuter), |
| m_dwTTOStyles(0), |
| m_iTTOAligns(0), |
| m_hAnchor(nullptr), |
| m_fScorllBarWidth(0), |
| m_bLButtonDown(false), |
| m_pScrollBarTP(nullptr) { |
| m_rtClient.Reset(); |
| m_rtConent.Reset(); |
| m_rtStatic.Reset(); |
| } |
| |
| IFWL_ListBox::~IFWL_ListBox() {} |
| |
| FWL_Type IFWL_ListBox::GetClassID() const { |
| return FWL_Type::ListBox; |
| } |
| |
| void IFWL_ListBox::GetWidgetRect(CFX_RectF& rect, bool bAutoSize) { |
| if (!bAutoSize) { |
| rect = m_pProperties->m_rtWidget; |
| return; |
| } |
| |
| rect.Set(0, 0, 0, 0); |
| if (!m_pProperties->m_pThemeProvider) |
| m_pProperties->m_pThemeProvider = GetAvailableTheme(); |
| |
| CFX_SizeF fs = CalcSize(true); |
| rect.Set(0, 0, fs.x, fs.y); |
| IFWL_Widget::GetWidgetRect(rect, true); |
| } |
| |
| void IFWL_ListBox::Update() { |
| if (IsLocked()) |
| return; |
| if (!m_pProperties->m_pThemeProvider) |
| m_pProperties->m_pThemeProvider = GetAvailableTheme(); |
| |
| switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_AlignMask) { |
| case FWL_STYLEEXT_LTB_LeftAlign: { |
| m_iTTOAligns = FDE_TTOALIGNMENT_CenterLeft; |
| break; |
| } |
| case FWL_STYLEEXT_LTB_RightAlign: { |
| m_iTTOAligns = FDE_TTOALIGNMENT_CenterRight; |
| break; |
| } |
| case FWL_STYLEEXT_LTB_CenterAlign: |
| default: { |
| m_iTTOAligns = FDE_TTOALIGNMENT_Center; |
| break; |
| } |
| } |
| if (m_pProperties->m_dwStyleExes & FWL_WGTSTYLE_RTLReading) |
| m_dwTTOStyles |= FDE_TTOSTYLE_RTL; |
| |
| m_dwTTOStyles |= FDE_TTOSTYLE_SingleLine; |
| m_fScorllBarWidth = GetScrollWidth(); |
| CalcSize(); |
| } |
| |
| FWL_WidgetHit IFWL_ListBox::HitTest(FX_FLOAT fx, FX_FLOAT fy) { |
| if (IsShowScrollBar(false)) { |
| CFX_RectF rect; |
| m_pHorzScrollBar->GetWidgetRect(rect); |
| if (rect.Contains(fx, fy)) |
| return FWL_WidgetHit::HScrollBar; |
| } |
| if (IsShowScrollBar(true)) { |
| CFX_RectF rect; |
| m_pVertScrollBar->GetWidgetRect(rect); |
| if (rect.Contains(fx, fy)) |
| return FWL_WidgetHit::VScrollBar; |
| } |
| if (m_rtClient.Contains(fx, fy)) |
| return FWL_WidgetHit::Client; |
| return FWL_WidgetHit::Unknown; |
| } |
| |
| void IFWL_ListBox::DrawWidget(CFX_Graphics* pGraphics, |
| const CFX_Matrix* pMatrix) { |
| if (!pGraphics) |
| return; |
| if (!m_pProperties->m_pThemeProvider) |
| return; |
| |
| IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider; |
| pGraphics->SaveGraphState(); |
| if (HasBorder()) |
| DrawBorder(pGraphics, CFWL_Part::Border, pTheme, pMatrix); |
| if (HasEdge()) |
| DrawEdge(pGraphics, CFWL_Part::Edge, pTheme, pMatrix); |
| |
| CFX_RectF rtClip(m_rtConent); |
| if (IsShowScrollBar(false)) |
| rtClip.height -= m_fScorllBarWidth; |
| if (IsShowScrollBar(true)) |
| rtClip.width -= m_fScorllBarWidth; |
| if (pMatrix) |
| pMatrix->TransformRect(rtClip); |
| |
| pGraphics->SetClipRect(rtClip); |
| if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_NoBackground) == 0) |
| DrawBkground(pGraphics, pTheme, pMatrix); |
| |
| DrawItems(pGraphics, pTheme, pMatrix); |
| pGraphics->RestoreGraphState(); |
| } |
| |
| void IFWL_ListBox::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) { |
| if (pThemeProvider) |
| m_pProperties->m_pThemeProvider = pThemeProvider; |
| } |
| |
| int32_t IFWL_ListBox::CountSelItems() { |
| int32_t iRet = 0; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| uint32_t dwStyle = GetItemStyles(this, pItem); |
| if (dwStyle & FWL_ITEMSTATE_LTB_Selected) |
| iRet++; |
| } |
| return iRet; |
| } |
| |
| CFWL_ListItem* IFWL_ListBox::GetSelItem(int32_t nIndexSel) { |
| int32_t idx = GetSelIndex(nIndexSel); |
| if (idx < 0) |
| return nullptr; |
| return GetItem(this, idx); |
| } |
| |
| int32_t IFWL_ListBox::GetSelIndex(int32_t nIndex) { |
| int32_t index = 0; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| if (!pItem) |
| return -1; |
| |
| uint32_t dwStyle = GetItemStyles(this, pItem); |
| if (dwStyle & FWL_ITEMSTATE_LTB_Selected) { |
| if (index == nIndex) |
| return i; |
| index++; |
| } |
| } |
| return -1; |
| } |
| |
| void IFWL_ListBox::SetSelItem(CFWL_ListItem* pItem, bool bSelect) { |
| if (!pItem) { |
| if (bSelect) { |
| SelectAll(); |
| } else { |
| ClearSelection(); |
| SetFocusItem(nullptr); |
| } |
| return; |
| } |
| if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection) |
| SetSelectionDirect(pItem, bSelect); |
| else |
| SetSelection(pItem, pItem, bSelect); |
| } |
| |
| void IFWL_ListBox::GetDataProviderItemText(CFWL_ListItem* pItem, |
| CFX_WideString& wsText) { |
| if (!pItem) |
| return; |
| GetItemText(this, pItem, wsText); |
| } |
| |
| CFWL_ListItem* IFWL_ListBox::GetListItem(CFWL_ListItem* pItem, |
| uint32_t dwKeyCode) { |
| CFWL_ListItem* hRet = nullptr; |
| switch (dwKeyCode) { |
| case FWL_VKEY_Up: |
| case FWL_VKEY_Down: |
| case FWL_VKEY_Home: |
| case FWL_VKEY_End: { |
| const bool bUp = dwKeyCode == FWL_VKEY_Up; |
| const bool bDown = dwKeyCode == FWL_VKEY_Down; |
| const bool bHome = dwKeyCode == FWL_VKEY_Home; |
| int32_t iDstItem = -1; |
| if (bUp || bDown) { |
| int32_t index = GetItemIndex(this, pItem); |
| iDstItem = dwKeyCode == 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 IFWL_ListBox::SetSelection(CFWL_ListItem* hStart, |
| CFWL_ListItem* hEnd, |
| bool bSelected) { |
| int32_t iStart = GetItemIndex(this, hStart); |
| int32_t iEnd = GetItemIndex(this, hEnd); |
| if (iStart > iEnd) { |
| int32_t iTemp = iStart; |
| iStart = iEnd; |
| iEnd = iTemp; |
| } |
| if (bSelected) { |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| SetSelectionDirect(pItem, false); |
| } |
| } |
| for (; iStart <= iEnd; iStart++) { |
| CFWL_ListItem* pItem = GetItem(this, iStart); |
| SetSelectionDirect(pItem, bSelected); |
| } |
| } |
| |
| void IFWL_ListBox::SetSelectionDirect(CFWL_ListItem* pItem, bool bSelect) { |
| uint32_t dwOldStyle = GetItemStyles(this, pItem); |
| bSelect ? dwOldStyle |= FWL_ITEMSTATE_LTB_Selected |
| : dwOldStyle &= ~FWL_ITEMSTATE_LTB_Selected; |
| SetItemStyles(this, pItem, dwOldStyle); |
| } |
| |
| bool IFWL_ListBox::IsItemSelected(CFWL_ListItem* pItem) { |
| uint32_t dwState = GetItemStyles(this, pItem); |
| return (dwState & FWL_ITEMSTATE_LTB_Selected) != 0; |
| } |
| |
| void IFWL_ListBox::ClearSelection() { |
| bool bMulti = m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| uint32_t dwState = GetItemStyles(this, pItem); |
| if (!(dwState & FWL_ITEMSTATE_LTB_Selected)) |
| continue; |
| SetSelectionDirect(pItem, false); |
| if (!bMulti) |
| return; |
| } |
| } |
| |
| void IFWL_ListBox::SelectAll() { |
| if (!m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection) |
| return; |
| |
| int32_t iCount = CountItems(this); |
| if (iCount <= 0) |
| return; |
| |
| CFWL_ListItem* pItemStart = GetItem(this, 0); |
| CFWL_ListItem* pItemEnd = GetItem(this, iCount - 1); |
| SetSelection(pItemStart, pItemEnd, false); |
| } |
| |
| CFWL_ListItem* IFWL_ListBox::GetFocusedItem() { |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| if (!pItem) |
| return nullptr; |
| if (GetItemStyles(this, pItem) & FWL_ITEMSTATE_LTB_Focused) |
| return pItem; |
| } |
| return nullptr; |
| } |
| |
| void IFWL_ListBox::SetFocusItem(CFWL_ListItem* pItem) { |
| CFWL_ListItem* hFocus = GetFocusedItem(); |
| if (pItem == hFocus) |
| return; |
| |
| if (hFocus) { |
| uint32_t dwStyle = GetItemStyles(this, hFocus); |
| dwStyle &= ~FWL_ITEMSTATE_LTB_Focused; |
| SetItemStyles(this, hFocus, dwStyle); |
| } |
| if (pItem) { |
| uint32_t dwStyle = GetItemStyles(this, pItem); |
| dwStyle |= FWL_ITEMSTATE_LTB_Focused; |
| SetItemStyles(this, pItem, dwStyle); |
| } |
| } |
| |
| CFWL_ListItem* IFWL_ListBox::GetItemAtPoint(FX_FLOAT fx, FX_FLOAT fy) { |
| fx -= m_rtConent.left, fy -= m_rtConent.top; |
| FX_FLOAT fPosX = 0.0f; |
| if (m_pHorzScrollBar) |
| fPosX = m_pHorzScrollBar->GetPos(); |
| |
| FX_FLOAT fPosY = 0.0; |
| if (m_pVertScrollBar) |
| fPosY = m_pVertScrollBar->GetPos(); |
| |
| int32_t nCount = CountItems(this); |
| for (int32_t i = 0; i < nCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| CFX_RectF rtItem; |
| GetItemRect(this, pItem, rtItem); |
| rtItem.Offset(-fPosX, -fPosY); |
| if (rtItem.Contains(fx, fy)) |
| return pItem; |
| } |
| return nullptr; |
| } |
| |
| bool IFWL_ListBox::GetItemCheckRectInternal(CFWL_ListItem* pItem, |
| CFX_RectF& rtCheck) { |
| if (!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check)) |
| return false; |
| GetItemCheckRect(this, pItem, rtCheck); |
| return true; |
| } |
| |
| bool IFWL_ListBox::GetItemChecked(CFWL_ListItem* pItem) { |
| if (!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check)) |
| return false; |
| return !!(GetItemCheckState(this, pItem) & FWL_ITEMSTATE_LTB_Checked); |
| } |
| |
| bool IFWL_ListBox::SetItemChecked(CFWL_ListItem* pItem, bool bChecked) { |
| if (!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check)) |
| return false; |
| |
| SetItemCheckState(this, pItem, bChecked ? FWL_ITEMSTATE_LTB_Checked : 0); |
| return true; |
| } |
| |
| bool IFWL_ListBox::ScrollToVisible(CFWL_ListItem* pItem) { |
| if (!m_pVertScrollBar) |
| return false; |
| |
| CFX_RectF rtItem; |
| GetItemRect(this, pItem, rtItem); |
| |
| bool bScroll = false; |
| FX_FLOAT fPosY = m_pVertScrollBar->GetPos(); |
| rtItem.Offset(0, -fPosY + m_rtConent.top); |
| if (rtItem.top < m_rtConent.top) { |
| fPosY += rtItem.top - m_rtConent.top; |
| bScroll = true; |
| } else if (rtItem.bottom() > m_rtConent.bottom()) { |
| fPosY += rtItem.bottom() - m_rtConent.bottom(); |
| bScroll = true; |
| } |
| if (!bScroll) |
| return false; |
| |
| m_pVertScrollBar->SetPos(fPosY); |
| m_pVertScrollBar->SetTrackPos(fPosY); |
| Repaint(&m_rtClient); |
| return true; |
| } |
| |
| void IFWL_ListBox::DrawBkground(CFX_Graphics* pGraphics, |
| IFWL_ThemeProvider* pTheme, |
| const CFX_Matrix* pMatrix) { |
| if (!pGraphics) |
| return; |
| if (!pTheme) |
| return; |
| |
| CFWL_ThemeBackground param; |
| param.m_pWidget = this; |
| param.m_iPart = CFWL_Part::Background; |
| param.m_dwStates = 0; |
| param.m_pGraphics = pGraphics; |
| param.m_matrix.Concat(*pMatrix); |
| param.m_rtPart = m_rtClient; |
| if (IsShowScrollBar(false) && IsShowScrollBar(true)) |
| param.m_pData = &m_rtStatic; |
| if (!IsEnabled()) |
| param.m_dwStates = CFWL_PartState_Disabled; |
| |
| pTheme->DrawBackground(¶m); |
| } |
| |
| void IFWL_ListBox::DrawItems(CFX_Graphics* pGraphics, |
| IFWL_ThemeProvider* pTheme, |
| const CFX_Matrix* pMatrix) { |
| FX_FLOAT fPosX = 0.0f; |
| if (m_pHorzScrollBar) |
| fPosX = m_pHorzScrollBar->GetPos(); |
| |
| FX_FLOAT fPosY = 0.0f; |
| if (m_pVertScrollBar) |
| fPosY = m_pVertScrollBar->GetPos(); |
| |
| CFX_RectF rtView(m_rtConent); |
| if (m_pHorzScrollBar) |
| rtView.height -= m_fScorllBarWidth; |
| if (m_pVertScrollBar) |
| rtView.width -= m_fScorllBarWidth; |
| |
| bool bMultiCol = |
| !!(m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiColumn); |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| CFX_RectF rtItem; |
| GetItemRect(this, pItem, rtItem); |
| rtItem.Offset(m_rtConent.left - fPosX, m_rtConent.top - fPosY); |
| if (rtItem.bottom() < m_rtConent.top) |
| continue; |
| if (rtItem.top >= m_rtConent.bottom()) |
| break; |
| if (bMultiCol && rtItem.left > m_rtConent.right()) |
| break; |
| |
| if (!(GetStylesEx() & FWL_STYLEEXT_LTB_OwnerDraw)) |
| DrawItem(pGraphics, pTheme, pItem, i, rtItem, pMatrix); |
| } |
| } |
| |
| void IFWL_ListBox::DrawItem(CFX_Graphics* pGraphics, |
| IFWL_ThemeProvider* pTheme, |
| CFWL_ListItem* pItem, |
| int32_t Index, |
| const CFX_RectF& rtItem, |
| const CFX_Matrix* pMatrix) { |
| uint32_t dwItemStyles = GetItemStyles(this, pItem); |
| uint32_t dwPartStates = CFWL_PartState_Normal; |
| if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled) |
| dwPartStates = CFWL_PartState_Disabled; |
| else if (dwItemStyles & FWL_ITEMSTATE_LTB_Selected) |
| dwPartStates = CFWL_PartState_Selected; |
| |
| if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused && |
| dwItemStyles & FWL_ITEMSTATE_LTB_Focused) { |
| dwPartStates |= CFWL_PartState_Focused; |
| } |
| |
| CFWL_ThemeBackground bg_param; |
| bg_param.m_pWidget = this; |
| bg_param.m_iPart = CFWL_Part::ListItem; |
| bg_param.m_dwStates = dwPartStates; |
| bg_param.m_pGraphics = pGraphics; |
| bg_param.m_matrix.Concat(*pMatrix); |
| bg_param.m_rtPart = rtItem; |
| bg_param.m_bMaximize = true; |
| CFX_RectF rtFocus(rtItem); |
| bg_param.m_pData = &rtFocus; |
| if (m_pVertScrollBar && !m_pHorzScrollBar && |
| (dwPartStates & CFWL_PartState_Focused)) { |
| bg_param.m_rtPart.left += 1; |
| bg_param.m_rtPart.width -= (m_fScorllBarWidth + 1); |
| rtFocus.Deflate(0.5, 0.5, 1 + m_fScorllBarWidth, 1); |
| } |
| pTheme->DrawBackground(&bg_param); |
| |
| bool bHasIcon = !!(GetStylesEx() & FWL_STYLEEXT_LTB_Icon); |
| if (bHasIcon) { |
| CFX_RectF rtDIB; |
| CFX_DIBitmap* pDib = GetItemIcon(this, pItem); |
| rtDIB.Set(rtItem.left, rtItem.top, rtItem.height, rtItem.height); |
| if (pDib) { |
| CFWL_ThemeBackground param; |
| param.m_pWidget = this; |
| param.m_iPart = CFWL_Part::Icon; |
| param.m_pGraphics = pGraphics; |
| param.m_matrix.Concat(*pMatrix); |
| param.m_rtPart = rtDIB; |
| param.m_bMaximize = true; |
| param.m_pImage = pDib; |
| pTheme->DrawBackground(¶m); |
| } |
| } |
| |
| bool bHasCheck = !!(GetStylesEx() & FWL_STYLEEXT_LTB_Check); |
| if (bHasCheck) { |
| CFX_RectF rtCheck; |
| rtCheck.Set(rtItem.left, rtItem.top, rtItem.height, rtItem.height); |
| rtCheck.Deflate(2, 2, 2, 2); |
| SetItemCheckRect(this, pItem, rtCheck); |
| CFWL_ThemeBackground param; |
| param.m_pWidget = this; |
| param.m_iPart = CFWL_Part::Check; |
| param.m_pGraphics = pGraphics; |
| if (GetItemChecked(pItem)) |
| param.m_dwStates = CFWL_PartState_Checked; |
| else |
| param.m_dwStates = CFWL_PartState_Normal; |
| param.m_matrix.Concat(*pMatrix); |
| param.m_rtPart = rtCheck; |
| param.m_bMaximize = true; |
| pTheme->DrawBackground(¶m); |
| } |
| |
| CFX_WideString wsText; |
| GetItemText(this, pItem, wsText); |
| if (wsText.GetLength() <= 0) |
| return; |
| |
| CFX_RectF rtText(rtItem); |
| rtText.Deflate(kItemTextMargin, kItemTextMargin); |
| if (bHasIcon || bHasCheck) |
| rtText.Deflate(rtItem.height, 0, 0, 0); |
| |
| CFWL_ThemeText textParam; |
| textParam.m_pWidget = this; |
| textParam.m_iPart = CFWL_Part::ListItem; |
| textParam.m_dwStates = dwPartStates; |
| textParam.m_pGraphics = pGraphics; |
| textParam.m_matrix.Concat(*pMatrix); |
| textParam.m_rtPart = rtText; |
| textParam.m_wsText = wsText; |
| textParam.m_dwTTOStyles = m_dwTTOStyles; |
| textParam.m_iTTOAlign = m_iTTOAligns; |
| textParam.m_bMaximize = true; |
| pTheme->DrawText(&textParam); |
| } |
| |
| CFX_SizeF IFWL_ListBox::CalcSize(bool bAutoSize) { |
| CFX_SizeF fs; |
| if (!m_pProperties->m_pThemeProvider) |
| return fs; |
| |
| GetClientRect(m_rtClient); |
| m_rtConent = m_rtClient; |
| CFX_RectF rtUIMargin; |
| rtUIMargin.Set(0, 0, 0, 0); |
| if (!m_pOuter) { |
| CFX_RectF* pUIMargin = static_cast<CFX_RectF*>( |
| GetThemeCapacity(CFWL_WidgetCapacity::UIMargin)); |
| if (pUIMargin) { |
| m_rtConent.Deflate(pUIMargin->left, pUIMargin->top, pUIMargin->width, |
| pUIMargin->height); |
| } |
| } |
| |
| FX_FLOAT fWidth = GetMaxTextWidth(); |
| fWidth += 2 * kItemTextMargin; |
| if (!bAutoSize) { |
| FX_FLOAT fActualWidth = |
| m_rtClient.width - rtUIMargin.left - rtUIMargin.width; |
| fWidth = std::max(fWidth, fActualWidth); |
| } |
| |
| m_fItemHeight = CalcItemHeight(); |
| if ((GetStylesEx() & FWL_STYLEEXT_LTB_Icon)) |
| fWidth += m_fItemHeight; |
| |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* htem = GetItem(this, i); |
| GetItemSize(fs, htem, fWidth, m_fItemHeight, bAutoSize); |
| } |
| if (bAutoSize) |
| return fs; |
| |
| FX_FLOAT iWidth = m_rtClient.width - rtUIMargin.left - rtUIMargin.width; |
| FX_FLOAT iHeight = m_rtClient.height; |
| bool bShowVertScr = |
| (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarAlaways) && |
| (m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll); |
| bool bShowHorzScr = |
| (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarAlaways) && |
| (m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll); |
| if (!bShowVertScr && m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll && |
| (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiColumn) == 0) { |
| bShowVertScr = (fs.y > iHeight); |
| } |
| if (!bShowHorzScr && m_pProperties->m_dwStyles & FWL_WGTSTYLE_HScroll) |
| bShowHorzScr = (fs.x > iWidth); |
| |
| CFX_SizeF szRange; |
| if (bShowVertScr) { |
| if (!m_pVertScrollBar) |
| InitScrollBar(); |
| |
| CFX_RectF rtScrollBar; |
| rtScrollBar.Set(m_rtClient.right() - m_fScorllBarWidth, m_rtClient.top, |
| m_fScorllBarWidth, m_rtClient.height - 1); |
| if (bShowHorzScr) |
| rtScrollBar.height -= m_fScorllBarWidth; |
| |
| m_pVertScrollBar->SetWidgetRect(rtScrollBar); |
| szRange.x = 0, szRange.y = fs.y - m_rtConent.height; |
| szRange.y = std::max(szRange.y, m_fItemHeight); |
| |
| m_pVertScrollBar->SetRange(szRange.x, szRange.y); |
| m_pVertScrollBar->SetPageSize(rtScrollBar.height * 9 / 10); |
| m_pVertScrollBar->SetStepSize(m_fItemHeight); |
| |
| FX_FLOAT fPos = |
| std::min(std::max(m_pVertScrollBar->GetPos(), 0.f), szRange.y); |
| m_pVertScrollBar->SetPos(fPos); |
| m_pVertScrollBar->SetTrackPos(fPos); |
| if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarFocus) == |
| 0 || |
| (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)) { |
| m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible, false); |
| } |
| m_pVertScrollBar->Update(); |
| } else if (m_pVertScrollBar) { |
| m_pVertScrollBar->SetPos(0); |
| m_pVertScrollBar->SetTrackPos(0); |
| m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible, true); |
| } |
| if (bShowHorzScr) { |
| if (!m_pHorzScrollBar) |
| InitScrollBar(false); |
| |
| CFX_RectF rtScrollBar; |
| rtScrollBar.Set(m_rtClient.left, m_rtClient.bottom() - m_fScorllBarWidth, |
| m_rtClient.width, m_fScorllBarWidth); |
| if (bShowVertScr) |
| rtScrollBar.width -= m_fScorllBarWidth; |
| |
| m_pHorzScrollBar->SetWidgetRect(rtScrollBar); |
| szRange.x = 0, szRange.y = fs.x - rtScrollBar.width; |
| m_pHorzScrollBar->SetRange(szRange.x, szRange.y); |
| m_pHorzScrollBar->SetPageSize(fWidth * 9 / 10); |
| m_pHorzScrollBar->SetStepSize(fWidth / 10); |
| |
| FX_FLOAT fPos = |
| std::min(std::max(m_pHorzScrollBar->GetPos(), 0.f), szRange.y); |
| m_pHorzScrollBar->SetPos(fPos); |
| m_pHorzScrollBar->SetTrackPos(fPos); |
| if ((m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_ShowScrollBarFocus) == |
| 0 || |
| (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused)) { |
| m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, false); |
| } |
| m_pHorzScrollBar->Update(); |
| } else if (m_pHorzScrollBar) { |
| m_pHorzScrollBar->SetPos(0); |
| m_pHorzScrollBar->SetTrackPos(0); |
| m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, true); |
| } |
| if (bShowVertScr && bShowHorzScr) { |
| m_rtStatic.Set(m_rtClient.right() - m_fScorllBarWidth, |
| m_rtClient.bottom() - m_fScorllBarWidth, m_fScorllBarWidth, |
| m_fScorllBarWidth); |
| } |
| return fs; |
| } |
| |
| void IFWL_ListBox::GetItemSize(CFX_SizeF& size, |
| CFWL_ListItem* pItem, |
| FX_FLOAT fWidth, |
| FX_FLOAT fItemHeight, |
| bool bAutoSize) { |
| if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiColumn) |
| return; |
| |
| if (!bAutoSize) { |
| CFX_RectF rtItem; |
| rtItem.Set(0, size.y, fWidth, fItemHeight); |
| SetItemRect(this, pItem, rtItem); |
| } |
| size.x = fWidth; |
| size.y += fItemHeight; |
| } |
| |
| FX_FLOAT IFWL_ListBox::GetMaxTextWidth() { |
| FX_FLOAT fRet = 0.0f; |
| int32_t iCount = CountItems(this); |
| for (int32_t i = 0; i < iCount; i++) { |
| CFWL_ListItem* pItem = GetItem(this, i); |
| if (!pItem) |
| continue; |
| |
| CFX_WideString wsText; |
| GetItemText(this, pItem, wsText); |
| CFX_SizeF sz = CalcTextSize(wsText, m_pProperties->m_pThemeProvider); |
| fRet = std::max(fRet, sz.x); |
| } |
| return fRet; |
| } |
| |
| FX_FLOAT IFWL_ListBox::GetScrollWidth() { |
| FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>( |
| GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth)); |
| if (!pfWidth) |
| return 0; |
| return *pfWidth; |
| } |
| |
| FX_FLOAT IFWL_ListBox::CalcItemHeight() { |
| FX_FLOAT* pfFont = |
| static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::FontSize)); |
| if (!pfFont) |
| return 20; |
| return *pfFont + 2 * kItemTextMargin; |
| } |
| |
| void IFWL_ListBox::InitScrollBar(bool bVert) { |
| if ((bVert && m_pVertScrollBar) || (!bVert && m_pHorzScrollBar)) |
| return; |
| |
| auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>(); |
| prop->m_dwStyleExes = bVert ? FWL_STYLEEXT_SCB_Vert : FWL_STYLEEXT_SCB_Horz; |
| prop->m_dwStates = FWL_WGTSTATE_Invisible; |
| prop->m_pParent = this; |
| prop->m_pThemeProvider = m_pScrollBarTP; |
| IFWL_ScrollBar* sb = new IFWL_ScrollBar(m_pOwnerApp, std::move(prop), this); |
| if (bVert) |
| m_pVertScrollBar.reset(sb); |
| else |
| m_pHorzScrollBar.reset(sb); |
| } |
| |
| bool IFWL_ListBox::IsShowScrollBar(bool bVert) { |
| IFWL_ScrollBar* pScrollbar = |
| bVert ? m_pVertScrollBar.get() : m_pHorzScrollBar.get(); |
| if (!pScrollbar || (pScrollbar->GetStates() & FWL_WGTSTATE_Invisible)) |
| return false; |
| return !(m_pProperties->m_dwStyleExes & |
| FWL_STYLEEXT_LTB_ShowScrollBarFocus) || |
| (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused); |
| } |
| |
| void IFWL_ListBox::OnProcessMessage(CFWL_Message* pMessage) { |
| if (!pMessage) |
| return; |
| if (!IsEnabled()) |
| return; |
| |
| CFWL_MessageType dwMsgCode = pMessage->GetClassID(); |
| switch (dwMsgCode) { |
| case CFWL_MessageType::SetFocus: |
| OnFocusChanged(pMessage, true); |
| break; |
| case CFWL_MessageType::KillFocus: |
| OnFocusChanged(pMessage, false); |
| break; |
| case CFWL_MessageType::Mouse: { |
| CFWL_MsgMouse* pMsg = static_cast<CFWL_MsgMouse*>(pMessage); |
| switch (pMsg->m_dwCmd) { |
| case FWL_MouseCommand::LeftButtonDown: |
| OnLButtonDown(pMsg); |
| break; |
| case FWL_MouseCommand::LeftButtonUp: |
| OnLButtonUp(pMsg); |
| break; |
| default: |
| break; |
| } |
| break; |
| } |
| case CFWL_MessageType::MouseWheel: |
| OnMouseWheel(static_cast<CFWL_MsgMouseWheel*>(pMessage)); |
| break; |
| case CFWL_MessageType::Key: { |
| CFWL_MsgKey* pMsg = static_cast<CFWL_MsgKey*>(pMessage); |
| if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown) |
| OnKeyDown(pMsg); |
| break; |
| } |
| default: |
| break; |
| } |
| IFWL_Widget::OnProcessMessage(pMessage); |
| } |
| |
| void IFWL_ListBox::OnProcessEvent(CFWL_Event* pEvent) { |
| if (!pEvent) |
| return; |
| if (pEvent->GetClassID() != CFWL_EventType::Scroll) |
| return; |
| |
| IFWL_Widget* pSrcTarget = pEvent->m_pSrcTarget; |
| if ((pSrcTarget == m_pVertScrollBar.get() && m_pVertScrollBar) || |
| (pSrcTarget == m_pHorzScrollBar.get() && m_pHorzScrollBar)) { |
| CFWL_EvtScroll* pScrollEvent = static_cast<CFWL_EvtScroll*>(pEvent); |
| OnScroll(static_cast<IFWL_ScrollBar*>(pSrcTarget), |
| pScrollEvent->m_iScrollCode, pScrollEvent->m_fPos); |
| } |
| } |
| |
| void IFWL_ListBox::OnDrawWidget(CFX_Graphics* pGraphics, |
| const CFX_Matrix* pMatrix) { |
| DrawWidget(pGraphics, pMatrix); |
| } |
| |
| void IFWL_ListBox::OnFocusChanged(CFWL_Message* pMsg, bool bSet) { |
| if (GetStylesEx() & FWL_STYLEEXT_LTB_ShowScrollBarFocus) { |
| if (m_pVertScrollBar) |
| m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible, !bSet); |
| if (m_pHorzScrollBar) |
| m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible, !bSet); |
| } |
| if (bSet) |
| m_pProperties->m_dwStates |= (FWL_WGTSTATE_Focused); |
| else |
| m_pProperties->m_dwStates &= ~(FWL_WGTSTATE_Focused); |
| |
| Repaint(&m_rtClient); |
| } |
| |
| void IFWL_ListBox::OnLButtonDown(CFWL_MsgMouse* pMsg) { |
| m_bLButtonDown = true; |
| if ((m_pProperties->m_dwStates & FWL_WGTSTATE_Focused) == 0) |
| SetFocus(true); |
| |
| CFWL_ListItem* pItem = GetItemAtPoint(pMsg->m_fx, pMsg->m_fy); |
| if (!pItem) |
| return; |
| |
| if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection) { |
| if (pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl) { |
| bool bSelected = IsItemSelected(pItem); |
| SetSelectionDirect(pItem, !bSelected); |
| m_hAnchor = pItem; |
| } else if (pMsg->m_dwFlags & FWL_KEYFLAG_Shift) { |
| if (m_hAnchor) |
| SetSelection(m_hAnchor, pItem, true); |
| else |
| SetSelectionDirect(pItem, true); |
| } else { |
| SetSelection(pItem, pItem, true); |
| m_hAnchor = pItem; |
| } |
| } else { |
| SetSelection(pItem, pItem, true); |
| } |
| if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_Check) { |
| CFWL_ListItem* hSelectedItem = GetItemAtPoint(pMsg->m_fx, pMsg->m_fy); |
| CFX_RectF rtCheck; |
| GetItemCheckRectInternal(hSelectedItem, rtCheck); |
| bool bChecked = GetItemChecked(pItem); |
| if (rtCheck.Contains(pMsg->m_fx, pMsg->m_fy)) { |
| SetItemChecked(pItem, !bChecked); |
| Update(); |
| } |
| } |
| SetFocusItem(pItem); |
| ScrollToVisible(pItem); |
| SetGrab(true); |
| Repaint(&m_rtClient); |
| } |
| |
| void IFWL_ListBox::OnLButtonUp(CFWL_MsgMouse* pMsg) { |
| if (!m_bLButtonDown) |
| return; |
| |
| m_bLButtonDown = false; |
| SetGrab(false); |
| } |
| |
| void IFWL_ListBox::OnMouseWheel(CFWL_MsgMouseWheel* pMsg) { |
| if (IsShowScrollBar(true)) |
| m_pVertScrollBar->GetDelegate()->OnProcessMessage(pMsg); |
| } |
| |
| void IFWL_ListBox::OnKeyDown(CFWL_MsgKey* pMsg) { |
| uint32_t dwKeyCode = pMsg->m_dwKeyCode; |
| switch (dwKeyCode) { |
| case FWL_VKEY_Tab: |
| case FWL_VKEY_Up: |
| case FWL_VKEY_Down: |
| case FWL_VKEY_Home: |
| case FWL_VKEY_End: { |
| CFWL_ListItem* pItem = GetFocusedItem(); |
| pItem = GetListItem(pItem, dwKeyCode); |
| bool bShift = !!(pMsg->m_dwFlags & FWL_KEYFLAG_Shift); |
| bool bCtrl = !!(pMsg->m_dwFlags & FWL_KEYFLAG_Ctrl); |
| OnVK(pItem, bShift, bCtrl); |
| break; |
| } |
| default: |
| break; |
| } |
| } |
| |
| void IFWL_ListBox::OnVK(CFWL_ListItem* pItem, bool bShift, bool bCtrl) { |
| if (!pItem) |
| return; |
| |
| if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection) { |
| if (bCtrl) { |
| // Do nothing. |
| } else if (bShift) { |
| if (m_hAnchor) |
| SetSelection(m_hAnchor, pItem, true); |
| else |
| SetSelectionDirect(pItem, true); |
| } else { |
| SetSelection(pItem, pItem, true); |
| m_hAnchor = pItem; |
| } |
| } else { |
| SetSelection(pItem, pItem, true); |
| } |
| |
| SetFocusItem(pItem); |
| ScrollToVisible(pItem); |
| |
| CFX_RectF rtInvalidate; |
| rtInvalidate.Set(0, 0, m_pProperties->m_rtWidget.width, |
| m_pProperties->m_rtWidget.height); |
| Repaint(&rtInvalidate); |
| } |
| |
| bool IFWL_ListBox::OnScroll(IFWL_ScrollBar* pScrollBar, |
| FWL_SCBCODE dwCode, |
| FX_FLOAT fPos) { |
| CFX_SizeF fs; |
| pScrollBar->GetRange(&fs.x, &fs.y); |
| FX_FLOAT iCurPos = pScrollBar->GetPos(); |
| FX_FLOAT fStep = pScrollBar->GetStepSize(); |
| switch (dwCode) { |
| case FWL_SCBCODE::Min: { |
| fPos = fs.x; |
| break; |
| } |
| case FWL_SCBCODE::Max: { |
| fPos = fs.y; |
| break; |
| } |
| case FWL_SCBCODE::StepBackward: { |
| fPos -= fStep; |
| if (fPos < fs.x + fStep / 2) |
| fPos = fs.x; |
| break; |
| } |
| case FWL_SCBCODE::StepForward: { |
| fPos += fStep; |
| if (fPos > fs.y - fStep / 2) |
| fPos = fs.y; |
| break; |
| } |
| case FWL_SCBCODE::PageBackward: { |
| fPos -= pScrollBar->GetPageSize(); |
| if (fPos < fs.x) |
| fPos = fs.x; |
| break; |
| } |
| case FWL_SCBCODE::PageForward: { |
| fPos += pScrollBar->GetPageSize(); |
| if (fPos > fs.y) |
| fPos = fs.y; |
| break; |
| } |
| case FWL_SCBCODE::Pos: |
| case FWL_SCBCODE::TrackPos: |
| case FWL_SCBCODE::None: |
| break; |
| case FWL_SCBCODE::EndScroll: |
| return false; |
| } |
| if (iCurPos != fPos) { |
| pScrollBar->SetPos(fPos); |
| pScrollBar->SetTrackPos(fPos); |
| Repaint(&m_rtClient); |
| } |
| return true; |
| } |
| |
| void IFWL_ListBox::GetItemText(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| CFX_WideString& wsText) { |
| if (pItem) |
| wsText = static_cast<CFWL_ListItem*>(pItem)->m_wsText; |
| } |
| |
| int32_t IFWL_ListBox::CountItems(const IFWL_Widget* pWidget) const { |
| return pdfium::CollectionSize<int32_t>(m_ItemArray); |
| } |
| |
| CFWL_ListItem* IFWL_ListBox::GetItem(const IFWL_Widget* pWidget, |
| int32_t nIndex) const { |
| if (nIndex < 0 || nIndex >= CountItems(pWidget)) |
| return nullptr; |
| return m_ItemArray[nIndex].get(); |
| } |
| |
| int32_t IFWL_ListBox::GetItemIndex(IFWL_Widget* pWidget, CFWL_ListItem* pItem) { |
| auto it = std::find_if( |
| m_ItemArray.begin(), m_ItemArray.end(), |
| [pItem](const std::unique_ptr<CFWL_ListItem>& candidate) { |
| return candidate.get() == static_cast<CFWL_ListItem*>(pItem); |
| }); |
| return it != m_ItemArray.end() ? it - m_ItemArray.begin() : -1; |
| } |
| |
| uint32_t IFWL_ListBox::GetItemStyles(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem) { |
| return pItem ? static_cast<CFWL_ListItem*>(pItem)->m_dwStates : 0; |
| } |
| |
| void IFWL_ListBox::GetItemRect(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| CFX_RectF& rtItem) { |
| if (pItem) |
| rtItem = static_cast<CFWL_ListItem*>(pItem)->m_rtItem; |
| } |
| |
| void* IFWL_ListBox::GetItemData(IFWL_Widget* pWidget, CFWL_ListItem* pItem) { |
| return pItem ? static_cast<CFWL_ListItem*>(pItem)->m_pData : nullptr; |
| } |
| |
| void IFWL_ListBox::SetItemStyles(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| uint32_t dwStyle) { |
| if (pItem) |
| static_cast<CFWL_ListItem*>(pItem)->m_dwStates = dwStyle; |
| } |
| |
| void IFWL_ListBox::SetItemRect(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| const CFX_RectF& rtItem) { |
| if (pItem) |
| static_cast<CFWL_ListItem*>(pItem)->m_rtItem = rtItem; |
| } |
| |
| CFX_DIBitmap* IFWL_ListBox::GetItemIcon(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem) { |
| return static_cast<CFWL_ListItem*>(pItem)->m_pDIB; |
| } |
| |
| void IFWL_ListBox::GetItemCheckRect(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| CFX_RectF& rtCheck) { |
| rtCheck = static_cast<CFWL_ListItem*>(pItem)->m_rtCheckBox; |
| } |
| |
| void IFWL_ListBox::SetItemCheckRect(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| const CFX_RectF& rtCheck) { |
| static_cast<CFWL_ListItem*>(pItem)->m_rtCheckBox = rtCheck; |
| } |
| |
| uint32_t IFWL_ListBox::GetItemCheckState(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem) { |
| return static_cast<CFWL_ListItem*>(pItem)->m_dwCheckState; |
| } |
| |
| void IFWL_ListBox::SetItemCheckState(IFWL_Widget* pWidget, |
| CFWL_ListItem* pItem, |
| uint32_t dwCheckState) { |
| static_cast<CFWL_ListItem*>(pItem)->m_dwCheckState = dwCheckState; |
| } |
| |
| CFWL_ListItem* IFWL_ListBox::AddString(const CFX_WideStringC& wsAdd, |
| bool bSelect) { |
| auto pItem = pdfium::MakeUnique<CFWL_ListItem>(); |
| pItem->m_dwStates = 0; |
| pItem->m_wsText = wsAdd; |
| pItem->m_dwStates = bSelect ? FWL_ITEMSTATE_LTB_Selected : 0; |
| m_ItemArray.push_back(std::move(pItem)); |
| return m_ItemArray.back().get(); |
| } |
| |
| bool IFWL_ListBox::RemoveAt(int32_t iIndex) { |
| if (iIndex < 0 || static_cast<size_t>(iIndex) >= m_ItemArray.size()) |
| return false; |
| |
| m_ItemArray.erase(m_ItemArray.begin() + iIndex); |
| return true; |
| } |
| |
| bool IFWL_ListBox::DeleteString(CFWL_ListItem* pItem) { |
| int32_t nIndex = GetItemIndex(this, pItem); |
| if (nIndex < 0 || static_cast<size_t>(nIndex) >= m_ItemArray.size()) |
| return false; |
| |
| int32_t iSel = nIndex + 1; |
| if (iSel >= CountItems(this)) |
| iSel = nIndex - 1; |
| if (iSel >= 0) { |
| CFWL_ListItem* pSel = static_cast<CFWL_ListItem*>(GetItem(this, iSel)); |
| pSel->m_dwStates |= FWL_ITEMSTATE_LTB_Selected; |
| } |
| m_ItemArray.erase(m_ItemArray.begin() + nIndex); |
| return true; |
| } |
| |
| void IFWL_ListBox::DeleteAll() { |
| m_ItemArray.clear(); |
| } |