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Diffstat (limited to 'xfa/fwl/cfwl_listbox.cpp')
| -rw-r--r-- | xfa/fwl/cfwl_listbox.cpp | 1130 |
1 files changed, 1130 insertions, 0 deletions
diff --git a/xfa/fwl/cfwl_listbox.cpp b/xfa/fwl/cfwl_listbox.cpp new file mode 100644 index 0000000000..30c160a248 --- /dev/null +++ b/xfa/fwl/cfwl_listbox.cpp @@ -0,0 +1,1130 @@ +// 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/cfwl_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/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/ifwl_themeprovider.h" + +namespace { + +const int kItemTextMargin = 2; + +} // namespace + +CFWL_ListBox::CFWL_ListBox(const CFWL_App* app, + std::unique_ptr<CFWL_WidgetProperties> properties, + CFWL_Widget* pOuter) + : CFWL_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(); +} + +CFWL_ListBox::~CFWL_ListBox() {} + +FWL_Type CFWL_ListBox::GetClassID() const { + return FWL_Type::ListBox; +} + +void CFWL_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(false); +} + +FWL_WidgetHit CFWL_ListBox::HitTest(FX_FLOAT fx, FX_FLOAT fy) { + if (IsShowScrollBar(false)) { + CFX_RectF rect = m_pHorzScrollBar->GetWidgetRect(); + if (rect.Contains(fx, fy)) + return FWL_WidgetHit::HScrollBar; + } + if (IsShowScrollBar(true)) { + CFX_RectF rect = m_pVertScrollBar->GetWidgetRect(); + if (rect.Contains(fx, fy)) + return FWL_WidgetHit::VScrollBar; + } + if (m_rtClient.Contains(fx, fy)) + return FWL_WidgetHit::Client; + return FWL_WidgetHit::Unknown; +} + +void CFWL_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 CFWL_ListBox::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) { + if (pThemeProvider) + m_pProperties->m_pThemeProvider = pThemeProvider; +} + +int32_t CFWL_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* 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++) { + 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 CFWL_ListBox::SetSelItem(CFWL_ListItem* pItem, bool bSelect) { + if (!pItem) { + if (bSelect) { + SelectAll(); + } else { + ClearSelection(); + SetFocusItem(nullptr); + } + return; + } + if (IsMultiSelection()) + SetSelectionDirect(pItem, bSelect); + else + SetSelection(pItem, pItem, bSelect); +} + +CFX_WideString CFWL_ListBox::GetDataProviderItemText(CFWL_ListItem* pItem) { + if (!pItem) + return L""; + return GetItemText(this, pItem); +} + +CFWL_ListItem* CFWL_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 CFWL_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 CFWL_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 CFWL_ListBox::IsMultiSelection() const { + return m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection; +} + +bool CFWL_ListBox::IsItemSelected(CFWL_ListItem* pItem) { + uint32_t dwState = GetItemStyles(this, pItem); + return (dwState & FWL_ITEMSTATE_LTB_Selected) != 0; +} + +void CFWL_ListBox::ClearSelection() { + bool bMulti = IsMultiSelection(); + 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 CFWL_ListBox::SelectAll() { + if (!IsMultiSelection()) + 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* CFWL_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 CFWL_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* CFWL_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 CFWL_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 CFWL_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 CFWL_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 CFWL_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 CFWL_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 CFWL_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 CFWL_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); + 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 CFWL_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) + InitVerticalScrollBar(); + + 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->RemoveStates(FWL_WGTSTATE_Invisible); + } + m_pVertScrollBar->Update(); + } else if (m_pVertScrollBar) { + m_pVertScrollBar->SetPos(0); + m_pVertScrollBar->SetTrackPos(0); + m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible); + } + if (bShowHorzScr) { + if (!m_pHorzScrollBar) + InitHorizontalScrollBar(); + + 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->RemoveStates(FWL_WGTSTATE_Invisible); + } + m_pHorzScrollBar->Update(); + } else if (m_pHorzScrollBar) { + m_pHorzScrollBar->SetPos(0); + m_pHorzScrollBar->SetTrackPos(0); + m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible); + } + if (bShowVertScr && bShowHorzScr) { + m_rtStatic.Set(m_rtClient.right() - m_fScorllBarWidth, + m_rtClient.bottom() - m_fScorllBarWidth, m_fScorllBarWidth, + m_fScorllBarWidth); + } + return fs; +} + +void CFWL_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 CFWL_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); + CFX_SizeF sz = CalcTextSize(wsText, m_pProperties->m_pThemeProvider, false); + fRet = std::max(fRet, sz.x); + } + return fRet; +} + +FX_FLOAT CFWL_ListBox::GetScrollWidth() { + FX_FLOAT* pfWidth = static_cast<FX_FLOAT*>( + GetThemeCapacity(CFWL_WidgetCapacity::ScrollBarWidth)); + if (!pfWidth) + return 0; + return *pfWidth; +} + +FX_FLOAT CFWL_ListBox::CalcItemHeight() { + FX_FLOAT* pfFont = + static_cast<FX_FLOAT*>(GetThemeCapacity(CFWL_WidgetCapacity::FontSize)); + if (!pfFont) + return 20; + return *pfFont + 2 * kItemTextMargin; +} + +void CFWL_ListBox::InitVerticalScrollBar() { + if (m_pVertScrollBar) + return; + + auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>(); + prop->m_dwStyleExes = FWL_STYLEEXT_SCB_Vert; + prop->m_dwStates = FWL_WGTSTATE_Invisible; + prop->m_pParent = this; + prop->m_pThemeProvider = m_pScrollBarTP; + m_pVertScrollBar = + pdfium::MakeUnique<CFWL_ScrollBar>(m_pOwnerApp, std::move(prop), this); +} + +void CFWL_ListBox::InitHorizontalScrollBar() { + if (m_pHorzScrollBar) + return; + + auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>(); + prop->m_dwStyleExes = FWL_STYLEEXT_SCB_Horz; + prop->m_dwStates = FWL_WGTSTATE_Invisible; + prop->m_pParent = this; + prop->m_pThemeProvider = m_pScrollBarTP; + m_pHorzScrollBar = + pdfium::MakeUnique<CFWL_ScrollBar>(m_pOwnerApp, std::move(prop), this); +} + +bool CFWL_ListBox::IsShowScrollBar(bool bVert) { + CFWL_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 CFWL_ListBox::OnProcessMessage(CFWL_Message* pMessage) { + if (!pMessage) + return; + if (!IsEnabled()) + return; + + switch (pMessage->GetType()) { + case CFWL_Message::Type::SetFocus: + OnFocusChanged(pMessage, true); + break; + case CFWL_Message::Type::KillFocus: + OnFocusChanged(pMessage, false); + break; + case CFWL_Message::Type::Mouse: { + CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage); + switch (pMsg->m_dwCmd) { + case FWL_MouseCommand::LeftButtonDown: + OnLButtonDown(pMsg); + break; + case FWL_MouseCommand::LeftButtonUp: + OnLButtonUp(pMsg); + break; + default: + break; + } + break; + } + case CFWL_Message::Type::MouseWheel: + OnMouseWheel(static_cast<CFWL_MessageMouseWheel*>(pMessage)); + break; + case CFWL_Message::Type::Key: { + CFWL_MessageKey* pMsg = static_cast<CFWL_MessageKey*>(pMessage); + if (pMsg->m_dwCmd == FWL_KeyCommand::KeyDown) + OnKeyDown(pMsg); + break; + } + default: + break; + } + 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->m_pSrcTarget; + if ((pSrcTarget == m_pVertScrollBar.get() && m_pVertScrollBar) || + (pSrcTarget == m_pHorzScrollBar.get() && m_pHorzScrollBar)) { + CFWL_EventScroll* pScrollEvent = static_cast<CFWL_EventScroll*>(pEvent); + OnScroll(static_cast<CFWL_ScrollBar*>(pSrcTarget), + pScrollEvent->m_iScrollCode, pScrollEvent->m_fPos); + } +} + +void CFWL_ListBox::OnDrawWidget(CFX_Graphics* pGraphics, + const CFX_Matrix* pMatrix) { + DrawWidget(pGraphics, pMatrix); +} + +void CFWL_ListBox::OnFocusChanged(CFWL_Message* pMsg, bool bSet) { + if (GetStylesEx() & FWL_STYLEEXT_LTB_ShowScrollBarFocus) { + if (m_pVertScrollBar) { + if (bSet) + m_pVertScrollBar->RemoveStates(FWL_WGTSTATE_Invisible); + else + m_pVertScrollBar->SetStates(FWL_WGTSTATE_Invisible); + } + if (m_pHorzScrollBar) { + if (bSet) + m_pHorzScrollBar->RemoveStates(FWL_WGTSTATE_Invisible); + else + m_pHorzScrollBar->SetStates(FWL_WGTSTATE_Invisible); + } + } + if (bSet) + m_pProperties->m_dwStates |= (FWL_WGTSTATE_Focused); + else + m_pProperties->m_dwStates &= ~(FWL_WGTSTATE_Focused); + + Repaint(&m_rtClient); +} + +void CFWL_ListBox::OnLButtonDown(CFWL_MessageMouse* 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 (IsMultiSelection()) { + 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 CFWL_ListBox::OnLButtonUp(CFWL_MessageMouse* pMsg) { + if (!m_bLButtonDown) + return; + + m_bLButtonDown = false; + SetGrab(false); +} + +void CFWL_ListBox::OnMouseWheel(CFWL_MessageMouseWheel* pMsg) { + if (IsShowScrollBar(true)) + m_pVertScrollBar->GetDelegate()->OnProcessMessage(pMsg); +} + +void CFWL_ListBox::OnKeyDown(CFWL_MessageKey* 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 CFWL_ListBox::OnVK(CFWL_ListItem* 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 + 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 CFWL_ListBox::OnScroll(CFWL_ScrollBar* pScrollBar, + CFWL_EventScroll::Code 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 CFWL_EventScroll::Code::Min: { + fPos = fs.x; + break; + } + case CFWL_EventScroll::Code::Max: { + fPos = fs.y; + break; + } + case CFWL_EventScroll::Code::StepBackward: { + fPos -= fStep; + if (fPos < fs.x + fStep / 2) + fPos = fs.x; + break; + } + case CFWL_EventScroll::Code::StepForward: { + fPos += fStep; + if (fPos > fs.y - fStep / 2) + fPos = fs.y; + break; + } + case CFWL_EventScroll::Code::PageBackward: { + fPos -= pScrollBar->GetPageSize(); + if (fPos < fs.x) + fPos = fs.x; + break; + } + case CFWL_EventScroll::Code::PageForward: { + fPos += pScrollBar->GetPageSize(); + if (fPos > fs.y) + fPos = fs.y; + 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); + Repaint(&m_rtClient); + } + return true; +} + +CFX_WideString CFWL_ListBox::GetItemText(CFWL_Widget* pWidget, + CFWL_ListItem* pItem) { + return pItem ? static_cast<CFWL_ListItem*>(pItem)->m_wsText : L""; +} + +int32_t CFWL_ListBox::CountItems(const CFWL_Widget* pWidget) const { + return pdfium::CollectionSize<int32_t>(m_ItemArray); +} + +CFWL_ListItem* 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, 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 CFWL_ListBox::GetItemStyles(CFWL_Widget* pWidget, + CFWL_ListItem* pItem) { + return pItem ? static_cast<CFWL_ListItem*>(pItem)->m_dwStates : 0; +} + +void CFWL_ListBox::GetItemRect(CFWL_Widget* pWidget, + CFWL_ListItem* pItem, + CFX_RectF& rtItem) { + if (pItem) + rtItem = static_cast<CFWL_ListItem*>(pItem)->m_rtItem; +} + +void* CFWL_ListBox::GetItemData(CFWL_Widget* pWidget, CFWL_ListItem* pItem) { + return pItem ? static_cast<CFWL_ListItem*>(pItem)->m_pData : nullptr; +} + +void CFWL_ListBox::SetItemStyles(CFWL_Widget* pWidget, + CFWL_ListItem* pItem, + uint32_t dwStyle) { + if (pItem) + static_cast<CFWL_ListItem*>(pItem)->m_dwStates = dwStyle; +} + +void CFWL_ListBox::SetItemRect(CFWL_Widget* pWidget, + CFWL_ListItem* pItem, + const CFX_RectF& rtItem) { + if (pItem) + static_cast<CFWL_ListItem*>(pItem)->m_rtItem = rtItem; +} + +CFX_DIBitmap* CFWL_ListBox::GetItemIcon(CFWL_Widget* pWidget, + CFWL_ListItem* pItem) { + return static_cast<CFWL_ListItem*>(pItem)->m_pDIB; +} + +void CFWL_ListBox::GetItemCheckRect(CFWL_Widget* pWidget, + CFWL_ListItem* pItem, + CFX_RectF& rtCheck) { + rtCheck = static_cast<CFWL_ListItem*>(pItem)->m_rtCheckBox; +} + +void CFWL_ListBox::SetItemCheckRect(CFWL_Widget* pWidget, + CFWL_ListItem* pItem, + const CFX_RectF& rtCheck) { + static_cast<CFWL_ListItem*>(pItem)->m_rtCheckBox = rtCheck; +} + +uint32_t CFWL_ListBox::GetItemCheckState(CFWL_Widget* pWidget, + CFWL_ListItem* pItem) { + return static_cast<CFWL_ListItem*>(pItem)->m_dwCheckState; +} + +void CFWL_ListBox::SetItemCheckState(CFWL_Widget* pWidget, + CFWL_ListItem* pItem, + uint32_t dwCheckState) { + static_cast<CFWL_ListItem*>(pItem)->m_dwCheckState = dwCheckState; +} + +CFWL_ListItem* CFWL_ListBox::AddString(const CFX_WideStringC& wsAdd) { + auto pItem = pdfium::MakeUnique<CFWL_ListItem>(); + pItem->m_dwStates = 0; + pItem->m_wsText = wsAdd; + pItem->m_dwStates = 0; + m_ItemArray.push_back(std::move(pItem)); + return m_ItemArray.back().get(); +} + +bool CFWL_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 CFWL_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 CFWL_ListBox::DeleteAll() { + m_ItemArray.clear(); +} + +uint32_t CFWL_ListBox::GetItemStates(CFWL_ListItem* pItem) { + if (!pItem) + return 0; + return pItem->m_dwStates | pItem->m_dwCheckState; +} |