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934 lines
27 KiB
934 lines
27 KiB
// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#include "xfa/fwl/cfwl_listbox.h"
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#include <algorithm>
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#include <memory>
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#include <utility>
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#include "third_party/base/ptr_util.h"
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#include "third_party/base/stl_util.h"
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#include "xfa/fde/cfde_textout.h"
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#include "xfa/fwl/cfwl_app.h"
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#include "xfa/fwl/cfwl_messagekey.h"
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#include "xfa/fwl/cfwl_messagemouse.h"
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#include "xfa/fwl/cfwl_messagemousewheel.h"
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#include "xfa/fwl/cfwl_themebackground.h"
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#include "xfa/fwl/cfwl_themepart.h"
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#include "xfa/fwl/cfwl_themetext.h"
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#include "xfa/fwl/fwl_widgetdef.h"
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#include "xfa/fwl/ifwl_themeprovider.h"
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namespace {
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const int kItemTextMargin = 2;
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} // namespace
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CFWL_ListBox::CFWL_ListBox(const CFWL_App* app,
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std::unique_ptr<CFWL_WidgetProperties> properties,
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CFWL_Widget* pOuter)
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: CFWL_Widget(app, std::move(properties), pOuter) {}
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CFWL_ListBox::~CFWL_ListBox() {}
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FWL_Type CFWL_ListBox::GetClassID() const {
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return FWL_Type::ListBox;
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}
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void CFWL_ListBox::Update() {
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if (IsLocked())
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return;
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if (!m_pProperties->m_pThemeProvider)
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m_pProperties->m_pThemeProvider = GetAvailableTheme();
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switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_AlignMask) {
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case FWL_STYLEEXT_LTB_LeftAlign: {
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m_iTTOAligns = FDE_TextAlignment::kCenterLeft;
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break;
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}
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case FWL_STYLEEXT_LTB_RightAlign: {
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m_iTTOAligns = FDE_TextAlignment::kCenterRight;
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break;
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}
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case FWL_STYLEEXT_LTB_CenterAlign:
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default: {
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m_iTTOAligns = FDE_TextAlignment::kCenter;
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break;
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}
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}
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m_TTOStyles.single_line_ = true;
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m_fScorllBarWidth = GetScrollWidth();
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CalcSize(false);
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}
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FWL_WidgetHit CFWL_ListBox::HitTest(const CFX_PointF& point) {
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if (IsShowScrollBar(false)) {
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CFX_RectF rect = m_pHorzScrollBar->GetWidgetRect();
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if (rect.Contains(point))
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return FWL_WidgetHit::HScrollBar;
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}
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if (IsShowScrollBar(true)) {
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CFX_RectF rect = m_pVertScrollBar->GetWidgetRect();
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if (rect.Contains(point))
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return FWL_WidgetHit::VScrollBar;
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}
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if (m_rtClient.Contains(point))
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return FWL_WidgetHit::Client;
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return FWL_WidgetHit::Unknown;
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}
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void CFWL_ListBox::DrawWidget(CXFA_Graphics* pGraphics,
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const CFX_Matrix& matrix) {
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if (!pGraphics)
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return;
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IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider.Get();
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if (!pTheme)
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return;
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pGraphics->SaveGraphState();
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if (HasBorder())
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DrawBorder(pGraphics, CFWL_Part::Border, pTheme, matrix);
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CFX_RectF rtClip(m_rtConent);
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if (IsShowScrollBar(false))
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rtClip.height -= m_fScorllBarWidth;
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if (IsShowScrollBar(true))
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rtClip.width -= m_fScorllBarWidth;
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pGraphics->SetClipRect(matrix.TransformRect(rtClip));
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if ((m_pProperties->m_dwStyles & FWL_WGTSTYLE_NoBackground) == 0)
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DrawBkground(pGraphics, pTheme, &matrix);
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DrawItems(pGraphics, pTheme, &matrix);
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pGraphics->RestoreGraphState();
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}
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void CFWL_ListBox::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
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if (pThemeProvider)
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m_pProperties->m_pThemeProvider = pThemeProvider;
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}
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int32_t CFWL_ListBox::CountSelItems() {
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int32_t iRet = 0;
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int32_t iCount = CountItems(this);
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for (int32_t i = 0; i < iCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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if (!pItem)
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continue;
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if (pItem->GetStates() & FWL_ITEMSTATE_LTB_Selected)
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iRet++;
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}
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return iRet;
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}
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CFWL_ListItem* CFWL_ListBox::GetSelItem(int32_t nIndexSel) {
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int32_t idx = GetSelIndex(nIndexSel);
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if (idx < 0)
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return nullptr;
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return GetItem(this, idx);
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}
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int32_t CFWL_ListBox::GetSelIndex(int32_t nIndex) {
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int32_t index = 0;
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int32_t iCount = CountItems(this);
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for (int32_t i = 0; i < iCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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if (!pItem)
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return -1;
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if (pItem->GetStates() & FWL_ITEMSTATE_LTB_Selected) {
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if (index == nIndex)
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return i;
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index++;
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}
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}
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return -1;
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}
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void CFWL_ListBox::SetSelItem(CFWL_ListItem* pItem, bool bSelect) {
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if (!pItem) {
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if (bSelect) {
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SelectAll();
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} else {
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ClearSelection();
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SetFocusItem(nullptr);
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}
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return;
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}
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if (IsMultiSelection())
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SetSelectionDirect(pItem, bSelect);
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else
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SetSelection(pItem, pItem, bSelect);
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}
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CFWL_ListItem* CFWL_ListBox::GetListItem(CFWL_ListItem* pItem,
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uint32_t dwKeyCode) {
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CFWL_ListItem* hRet = nullptr;
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switch (dwKeyCode) {
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case XFA_FWL_VKEY_Up:
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case XFA_FWL_VKEY_Down:
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case XFA_FWL_VKEY_Home:
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case XFA_FWL_VKEY_End: {
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const bool bUp = dwKeyCode == XFA_FWL_VKEY_Up;
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const bool bDown = dwKeyCode == XFA_FWL_VKEY_Down;
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const bool bHome = dwKeyCode == XFA_FWL_VKEY_Home;
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int32_t iDstItem = -1;
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if (bUp || bDown) {
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int32_t index = GetItemIndex(this, pItem);
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iDstItem = dwKeyCode == XFA_FWL_VKEY_Up ? index - 1 : index + 1;
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} else if (bHome) {
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iDstItem = 0;
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} else {
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int32_t iCount = CountItems(this);
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iDstItem = iCount - 1;
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}
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hRet = GetItem(this, iDstItem);
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break;
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}
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default:
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break;
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}
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return hRet;
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}
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void CFWL_ListBox::SetSelection(CFWL_ListItem* hStart,
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CFWL_ListItem* hEnd,
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bool bSelected) {
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int32_t iStart = GetItemIndex(this, hStart);
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int32_t iEnd = GetItemIndex(this, hEnd);
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if (iStart > iEnd) {
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int32_t iTemp = iStart;
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iStart = iEnd;
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iEnd = iTemp;
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}
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if (bSelected) {
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int32_t iCount = CountItems(this);
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for (int32_t i = 0; i < iCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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SetSelectionDirect(pItem, false);
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}
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}
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for (; iStart <= iEnd; iStart++) {
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CFWL_ListItem* pItem = GetItem(this, iStart);
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SetSelectionDirect(pItem, bSelected);
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}
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}
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void CFWL_ListBox::SetSelectionDirect(CFWL_ListItem* pItem, bool bSelect) {
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if (!pItem)
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return;
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uint32_t dwOldStyle = pItem->GetStates();
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bSelect ? dwOldStyle |= FWL_ITEMSTATE_LTB_Selected
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: dwOldStyle &= ~FWL_ITEMSTATE_LTB_Selected;
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pItem->SetStates(dwOldStyle);
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}
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bool CFWL_ListBox::IsMultiSelection() const {
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return m_pProperties->m_dwStyleExes & FWL_STYLEEXT_LTB_MultiSelection;
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}
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bool CFWL_ListBox::IsItemSelected(CFWL_ListItem* pItem) {
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return pItem && (pItem->GetStates() & FWL_ITEMSTATE_LTB_Selected) != 0;
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}
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void CFWL_ListBox::ClearSelection() {
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bool bMulti = IsMultiSelection();
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int32_t iCount = CountItems(this);
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for (int32_t i = 0; i < iCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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if (!pItem)
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continue;
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if (!(pItem->GetStates() & FWL_ITEMSTATE_LTB_Selected))
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continue;
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SetSelectionDirect(pItem, false);
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if (!bMulti)
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return;
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}
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}
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void CFWL_ListBox::SelectAll() {
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if (!IsMultiSelection())
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return;
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int32_t iCount = CountItems(this);
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if (iCount <= 0)
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return;
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CFWL_ListItem* pItemStart = GetItem(this, 0);
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CFWL_ListItem* pItemEnd = GetItem(this, iCount - 1);
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SetSelection(pItemStart, pItemEnd, false);
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}
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CFWL_ListItem* CFWL_ListBox::GetFocusedItem() {
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int32_t iCount = CountItems(this);
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for (int32_t i = 0; i < iCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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if (!pItem)
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return nullptr;
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if (pItem->GetStates() & FWL_ITEMSTATE_LTB_Focused)
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return pItem;
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}
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return nullptr;
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}
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void CFWL_ListBox::SetFocusItem(CFWL_ListItem* pItem) {
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CFWL_ListItem* hFocus = GetFocusedItem();
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if (pItem == hFocus)
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return;
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if (hFocus) {
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uint32_t dwStyle = hFocus->GetStates();
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dwStyle &= ~FWL_ITEMSTATE_LTB_Focused;
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hFocus->SetStates(dwStyle);
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}
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if (pItem) {
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uint32_t dwStyle = pItem->GetStates();
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dwStyle |= FWL_ITEMSTATE_LTB_Focused;
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pItem->SetStates(dwStyle);
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}
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}
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CFWL_ListItem* CFWL_ListBox::GetItemAtPoint(const CFX_PointF& point) {
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CFX_PointF pos = point - m_rtConent.TopLeft();
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float fPosX = 0.0f;
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if (m_pHorzScrollBar)
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fPosX = m_pHorzScrollBar->GetPos();
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float fPosY = 0.0;
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if (m_pVertScrollBar)
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fPosY = m_pVertScrollBar->GetPos();
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int32_t nCount = CountItems(this);
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for (int32_t i = 0; i < nCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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if (!pItem)
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continue;
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CFX_RectF rtItem = pItem->GetRect();
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rtItem.Offset(-fPosX, -fPosY);
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if (rtItem.Contains(pos))
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return pItem;
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}
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return nullptr;
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}
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bool CFWL_ListBox::ScrollToVisible(CFWL_ListItem* pItem) {
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if (!m_pVertScrollBar)
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return false;
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CFX_RectF rtItem = pItem ? pItem->GetRect() : CFX_RectF();
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bool bScroll = false;
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float fPosY = m_pVertScrollBar->GetPos();
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rtItem.Offset(0, -fPosY + m_rtConent.top);
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if (rtItem.top < m_rtConent.top) {
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fPosY += rtItem.top - m_rtConent.top;
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bScroll = true;
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} else if (rtItem.bottom() > m_rtConent.bottom()) {
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fPosY += rtItem.bottom() - m_rtConent.bottom();
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bScroll = true;
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}
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if (!bScroll)
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return false;
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m_pVertScrollBar->SetPos(fPosY);
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m_pVertScrollBar->SetTrackPos(fPosY);
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RepaintRect(m_rtClient);
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return true;
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}
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void CFWL_ListBox::DrawBkground(CXFA_Graphics* pGraphics,
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IFWL_ThemeProvider* pTheme,
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const CFX_Matrix* pMatrix) {
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if (!pGraphics)
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return;
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if (!pTheme)
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return;
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CFWL_ThemeBackground param;
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param.m_pWidget = this;
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param.m_iPart = CFWL_Part::Background;
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param.m_dwStates = 0;
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param.m_pGraphics = pGraphics;
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param.m_matrix.Concat(*pMatrix);
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param.m_rtPart = m_rtClient;
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if (IsShowScrollBar(false) && IsShowScrollBar(true))
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param.m_pRtData = &m_rtStatic;
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if (!IsEnabled())
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param.m_dwStates = CFWL_PartState_Disabled;
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pTheme->DrawBackground(param);
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}
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void CFWL_ListBox::DrawItems(CXFA_Graphics* pGraphics,
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IFWL_ThemeProvider* pTheme,
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const CFX_Matrix* pMatrix) {
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float fPosX = 0.0f;
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if (m_pHorzScrollBar)
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fPosX = m_pHorzScrollBar->GetPos();
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float fPosY = 0.0f;
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if (m_pVertScrollBar)
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fPosY = m_pVertScrollBar->GetPos();
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CFX_RectF rtView(m_rtConent);
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if (m_pHorzScrollBar)
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rtView.height -= m_fScorllBarWidth;
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if (m_pVertScrollBar)
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rtView.width -= m_fScorllBarWidth;
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int32_t iCount = CountItems(this);
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for (int32_t i = 0; i < iCount; i++) {
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CFWL_ListItem* pItem = GetItem(this, i);
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if (!pItem)
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continue;
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CFX_RectF rtItem = pItem->GetRect();
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rtItem.Offset(m_rtConent.left - fPosX, m_rtConent.top - fPosY);
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if (rtItem.bottom() < m_rtConent.top)
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continue;
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if (rtItem.top >= m_rtConent.bottom())
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break;
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DrawItem(pGraphics, pTheme, pItem, i, rtItem, pMatrix);
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}
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}
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void CFWL_ListBox::DrawItem(CXFA_Graphics* pGraphics,
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IFWL_ThemeProvider* pTheme,
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CFWL_ListItem* pItem,
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int32_t Index,
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const CFX_RectF& rtItem,
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const CFX_Matrix* pMatrix) {
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uint32_t dwItemStyles = pItem ? pItem->GetStates() : 0;
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uint32_t dwPartStates = CFWL_PartState_Normal;
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if (m_pProperties->m_dwStates & FWL_WGTSTATE_Disabled)
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dwPartStates = CFWL_PartState_Disabled;
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else if (dwItemStyles & FWL_ITEMSTATE_LTB_Selected)
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dwPartStates = CFWL_PartState_Selected;
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if (m_pProperties->m_dwStates & FWL_WGTSTATE_Focused &&
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dwItemStyles & FWL_ITEMSTATE_LTB_Focused) {
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dwPartStates |= CFWL_PartState_Focused;
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}
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CFWL_ThemeBackground bg_param;
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bg_param.m_pWidget = this;
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bg_param.m_iPart = CFWL_Part::ListItem;
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bg_param.m_dwStates = dwPartStates;
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bg_param.m_pGraphics = pGraphics;
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bg_param.m_matrix.Concat(*pMatrix);
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bg_param.m_rtPart = rtItem;
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bg_param.m_bMaximize = true;
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CFX_RectF rtFocus(rtItem);
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bg_param.m_pRtData = &rtFocus;
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if (m_pVertScrollBar && !m_pHorzScrollBar &&
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(dwPartStates & CFWL_PartState_Focused)) {
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bg_param.m_rtPart.left += 1;
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bg_param.m_rtPart.width -= (m_fScorllBarWidth + 1);
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rtFocus.Deflate(0.5, 0.5, 1 + m_fScorllBarWidth, 1);
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}
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pTheme->DrawBackground(bg_param);
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if (!pItem)
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return;
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WideString wsText = pItem->GetText();
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if (wsText.GetLength() <= 0)
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return;
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CFX_RectF rtText(rtItem);
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rtText.Deflate(kItemTextMargin, kItemTextMargin);
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CFWL_ThemeText textParam;
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textParam.m_pWidget = this;
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textParam.m_iPart = CFWL_Part::ListItem;
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textParam.m_dwStates = dwPartStates;
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textParam.m_pGraphics = pGraphics;
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textParam.m_matrix.Concat(*pMatrix);
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textParam.m_rtPart = rtText;
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textParam.m_wsText = std::move(wsText);
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textParam.m_dwTTOStyles = m_TTOStyles;
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textParam.m_iTTOAlign = m_iTTOAligns;
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textParam.m_bMaximize = true;
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pTheme->DrawText(textParam);
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}
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CFX_SizeF CFWL_ListBox::CalcSize(bool bAutoSize) {
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if (!m_pProperties->m_pThemeProvider)
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return CFX_SizeF();
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m_rtClient = GetClientRect();
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m_rtConent = m_rtClient;
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CFX_RectF rtUIMargin;
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if (!m_pOuter) {
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CFWL_ThemePart part;
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part.m_pWidget = this;
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IFWL_ThemeProvider* theme = GetAvailableTheme();
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CFX_RectF pUIMargin = theme ? theme->GetUIMargin(part) : CFX_RectF();
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m_rtConent.Deflate(pUIMargin.left, pUIMargin.top, pUIMargin.width,
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pUIMargin.height);
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}
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float fWidth = GetMaxTextWidth();
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fWidth += 2 * kItemTextMargin;
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if (!bAutoSize) {
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float fActualWidth = m_rtClient.width - rtUIMargin.left - rtUIMargin.width;
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fWidth = std::max(fWidth, fActualWidth);
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}
|
|
m_fItemHeight = CalcItemHeight();
|
|
|
|
int32_t iCount = CountItems(this);
|
|
CFX_SizeF fs;
|
|
for (int32_t i = 0; i < iCount; i++) {
|
|
CFWL_ListItem* htem = GetItem(this, i);
|
|
UpdateItemSize(htem, fs, fWidth, m_fItemHeight, bAutoSize);
|
|
}
|
|
if (bAutoSize)
|
|
return fs;
|
|
|
|
float iHeight = m_rtClient.height;
|
|
bool bShowVertScr = false;
|
|
bool bShowHorzScr = false;
|
|
if (!bShowVertScr && (m_pProperties->m_dwStyles & FWL_WGTSTYLE_VScroll))
|
|
bShowVertScr = (fs.height > iHeight);
|
|
|
|
CFX_SizeF szRange;
|
|
if (bShowVertScr) {
|
|
if (!m_pVertScrollBar)
|
|
InitVerticalScrollBar();
|
|
|
|
CFX_RectF rtScrollBar(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.width = 0;
|
|
szRange.height = std::max(fs.height - m_rtConent.height, m_fItemHeight);
|
|
|
|
m_pVertScrollBar->SetRange(szRange.width, szRange.height);
|
|
m_pVertScrollBar->SetPageSize(rtScrollBar.height * 9 / 10);
|
|
m_pVertScrollBar->SetStepSize(m_fItemHeight);
|
|
|
|
float fPos =
|
|
pdfium::clamp(m_pVertScrollBar->GetPos(), 0.0f, szRange.height);
|
|
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(m_rtClient.left,
|
|
m_rtClient.bottom() - m_fScorllBarWidth,
|
|
m_rtClient.width, m_fScorllBarWidth);
|
|
if (bShowVertScr)
|
|
rtScrollBar.width -= m_fScorllBarWidth;
|
|
|
|
m_pHorzScrollBar->SetWidgetRect(rtScrollBar);
|
|
szRange.width = 0;
|
|
szRange.height = fs.width - rtScrollBar.width;
|
|
m_pHorzScrollBar->SetRange(szRange.width, szRange.height);
|
|
m_pHorzScrollBar->SetPageSize(fWidth * 9 / 10);
|
|
m_pHorzScrollBar->SetStepSize(fWidth / 10);
|
|
|
|
float fPos =
|
|
pdfium::clamp(m_pHorzScrollBar->GetPos(), 0.0f, szRange.height);
|
|
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 = CFX_RectF(m_rtClient.right() - m_fScorllBarWidth,
|
|
m_rtClient.bottom() - m_fScorllBarWidth,
|
|
m_fScorllBarWidth, m_fScorllBarWidth);
|
|
}
|
|
return fs;
|
|
}
|
|
|
|
void CFWL_ListBox::UpdateItemSize(CFWL_ListItem* pItem,
|
|
CFX_SizeF& size,
|
|
float fWidth,
|
|
float fItemHeight,
|
|
bool bAutoSize) const {
|
|
if (!bAutoSize && pItem) {
|
|
CFX_RectF rtItem(0, size.height, fWidth, fItemHeight);
|
|
pItem->SetRect(rtItem);
|
|
}
|
|
size.width = fWidth;
|
|
size.height += fItemHeight;
|
|
}
|
|
|
|
float CFWL_ListBox::GetMaxTextWidth() {
|
|
float fRet = 0.0f;
|
|
int32_t iCount = CountItems(this);
|
|
for (int32_t i = 0; i < iCount; i++) {
|
|
CFWL_ListItem* pItem = GetItem(this, i);
|
|
if (!pItem)
|
|
continue;
|
|
|
|
CFX_SizeF sz = CalcTextSize(pItem->GetText(),
|
|
m_pProperties->m_pThemeProvider.Get(), false);
|
|
fRet = std::max(fRet, sz.width);
|
|
}
|
|
return fRet;
|
|
}
|
|
|
|
float CFWL_ListBox::GetScrollWidth() {
|
|
IFWL_ThemeProvider* theme = GetAvailableTheme();
|
|
return theme ? theme->GetScrollBarWidth() : 0.0f;
|
|
}
|
|
|
|
float CFWL_ListBox::CalcItemHeight() {
|
|
IFWL_ThemeProvider* theme = GetAvailableTheme();
|
|
CFWL_ThemePart part;
|
|
part.m_pWidget = this;
|
|
return (theme ? theme->GetFontSize(part) : 20.0f) + 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.Get(),
|
|
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.Get(),
|
|
std::move(prop), this);
|
|
}
|
|
|
|
bool CFWL_ListBox::IsShowScrollBar(bool bVert) {
|
|
CFWL_ScrollBar* pScrollbar =
|
|
bVert ? m_pVertScrollBar.get() : m_pHorzScrollBar.get();
|
|
if (!pScrollbar || !pScrollbar->IsVisible())
|
|
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;
|
|
}
|
|
// Dst target could be |this|, continue only if not destroyed by above.
|
|
if (pMessage->GetDstTarget())
|
|
CFWL_Widget::OnProcessMessage(pMessage);
|
|
}
|
|
|
|
void CFWL_ListBox::OnProcessEvent(CFWL_Event* pEvent) {
|
|
if (!pEvent)
|
|
return;
|
|
if (pEvent->GetType() != CFWL_Event::Type::Scroll)
|
|
return;
|
|
|
|
CFWL_Widget* pSrcTarget = pEvent->GetSrcTarget();
|
|
if ((pSrcTarget == m_pVertScrollBar.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(CXFA_Graphics* pGraphics,
|
|
const CFX_Matrix& matrix) {
|
|
DrawWidget(pGraphics, matrix);
|
|
}
|
|
|
|
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);
|
|
|
|
RepaintRect(m_rtClient);
|
|
}
|
|
|
|
void CFWL_ListBox::OnLButtonDown(CFWL_MessageMouse* pMsg) {
|
|
m_bLButtonDown = true;
|
|
|
|
CFWL_ListItem* pItem = GetItemAtPoint(pMsg->m_pos);
|
|
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);
|
|
}
|
|
|
|
SetFocusItem(pItem);
|
|
ScrollToVisible(pItem);
|
|
SetGrab(true);
|
|
RepaintRect(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 XFA_FWL_VKEY_Tab:
|
|
case XFA_FWL_VKEY_Up:
|
|
case XFA_FWL_VKEY_Down:
|
|
case XFA_FWL_VKEY_Home:
|
|
case XFA_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);
|
|
|
|
RepaintRect(CFX_RectF(0, 0, m_pProperties->m_rtWidget.width,
|
|
m_pProperties->m_rtWidget.height));
|
|
}
|
|
|
|
bool CFWL_ListBox::OnScroll(CFWL_ScrollBar* pScrollBar,
|
|
CFWL_EventScroll::Code dwCode,
|
|
float fPos) {
|
|
CFX_SizeF fs;
|
|
pScrollBar->GetRange(&fs.width, &fs.height);
|
|
float iCurPos = pScrollBar->GetPos();
|
|
float fStep = pScrollBar->GetStepSize();
|
|
switch (dwCode) {
|
|
case CFWL_EventScroll::Code::Min: {
|
|
fPos = fs.width;
|
|
break;
|
|
}
|
|
case CFWL_EventScroll::Code::Max: {
|
|
fPos = fs.height;
|
|
break;
|
|
}
|
|
case CFWL_EventScroll::Code::StepBackward: {
|
|
fPos -= fStep;
|
|
if (fPos < fs.width + fStep / 2)
|
|
fPos = fs.width;
|
|
break;
|
|
}
|
|
case CFWL_EventScroll::Code::StepForward: {
|
|
fPos += fStep;
|
|
if (fPos > fs.height - fStep / 2)
|
|
fPos = fs.height;
|
|
break;
|
|
}
|
|
case CFWL_EventScroll::Code::PageBackward: {
|
|
fPos -= pScrollBar->GetPageSize();
|
|
if (fPos < fs.width)
|
|
fPos = fs.width;
|
|
break;
|
|
}
|
|
case CFWL_EventScroll::Code::PageForward: {
|
|
fPos += pScrollBar->GetPageSize();
|
|
if (fPos > fs.height)
|
|
fPos = fs.height;
|
|
break;
|
|
}
|
|
case CFWL_EventScroll::Code::Pos:
|
|
case CFWL_EventScroll::Code::TrackPos:
|
|
case CFWL_EventScroll::Code::None:
|
|
break;
|
|
case CFWL_EventScroll::Code::EndScroll:
|
|
return false;
|
|
}
|
|
if (iCurPos != fPos) {
|
|
pScrollBar->SetPos(fPos);
|
|
pScrollBar->SetTrackPos(fPos);
|
|
RepaintRect(m_rtClient);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
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() == pItem;
|
|
});
|
|
return it != m_ItemArray.end() ? it - m_ItemArray.begin() : -1;
|
|
}
|
|
|
|
CFWL_ListItem* CFWL_ListBox::AddString(const WideString& wsAdd) {
|
|
m_ItemArray.emplace_back(pdfium::MakeUnique<CFWL_ListItem>(wsAdd));
|
|
return m_ItemArray.back().get();
|
|
}
|
|
|
|
void CFWL_ListBox::RemoveAt(int32_t iIndex) {
|
|
if (iIndex < 0 || static_cast<size_t>(iIndex) >= m_ItemArray.size())
|
|
return;
|
|
m_ItemArray.erase(m_ItemArray.begin() + iIndex);
|
|
}
|
|
|
|
void CFWL_ListBox::DeleteString(CFWL_ListItem* pItem) {
|
|
int32_t nIndex = GetItemIndex(this, pItem);
|
|
if (nIndex < 0 || static_cast<size_t>(nIndex) >= m_ItemArray.size())
|
|
return;
|
|
|
|
int32_t iSel = nIndex + 1;
|
|
if (iSel >= CountItems(this))
|
|
iSel = nIndex - 1;
|
|
if (iSel >= 0) {
|
|
if (CFWL_ListItem* item = GetItem(this, iSel))
|
|
item->SetStates(item->GetStates() | FWL_ITEMSTATE_LTB_Selected);
|
|
}
|
|
|
|
m_ItemArray.erase(m_ItemArray.begin() + nIndex);
|
|
}
|
|
|
|
void CFWL_ListBox::DeleteAll() {
|
|
m_ItemArray.clear();
|
|
}
|