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-rw-r--r--xfa/fwl/cfwl_listbox.cpp1130
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(&param);
+}
+
+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(&param);
+ }
+ }
+
+ 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(&param);
+ }
+
+ 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;
+}