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589 lines
17 KiB
589 lines
17 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_combobox.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 "xfa/fde/cfde_texteditengine.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_event.h"
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#include "xfa/fwl/cfwl_eventselectchanged.h"
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#include "xfa/fwl/cfwl_listbox.h"
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#include "xfa/fwl/cfwl_messagekey.h"
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#include "xfa/fwl/cfwl_messagekillfocus.h"
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#include "xfa/fwl/cfwl_messagemouse.h"
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#include "xfa/fwl/cfwl_messagesetfocus.h"
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#include "xfa/fwl/cfwl_notedriver.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/cfwl_widgetmgr.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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CFWL_ComboBox::CFWL_ComboBox(const CFWL_App* app)
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: CFWL_Widget(app, pdfium::MakeUnique<CFWL_WidgetProperties>(), nullptr) {
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InitComboList();
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InitComboEdit();
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}
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CFWL_ComboBox::~CFWL_ComboBox() = default;
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FWL_Type CFWL_ComboBox::GetClassID() const {
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return FWL_Type::ComboBox;
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}
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void CFWL_ComboBox::AddString(const WideString& wsText) {
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m_pListBox->AddString(wsText);
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}
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void CFWL_ComboBox::RemoveAt(int32_t iIndex) {
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m_pListBox->RemoveAt(iIndex);
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}
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void CFWL_ComboBox::RemoveAll() {
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m_pListBox->DeleteAll();
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}
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void CFWL_ComboBox::ModifyStylesEx(uint32_t dwStylesExAdded,
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uint32_t dwStylesExRemoved) {
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if (!m_pEdit)
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InitComboEdit();
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bool bAddDropDown = !!(dwStylesExAdded & FWL_STYLEEXT_CMB_DropDown);
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bool bDelDropDown = !!(dwStylesExRemoved & FWL_STYLEEXT_CMB_DropDown);
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dwStylesExRemoved &= ~FWL_STYLEEXT_CMB_DropDown;
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m_pProperties->m_dwStyleExes |= FWL_STYLEEXT_CMB_DropDown;
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if (bAddDropDown)
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m_pEdit->ModifyStylesEx(0, FWL_STYLEEXT_EDT_ReadOnly);
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else if (bDelDropDown)
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m_pEdit->ModifyStylesEx(FWL_STYLEEXT_EDT_ReadOnly, 0);
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CFWL_Widget::ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
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}
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void CFWL_ComboBox::Update() {
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if (m_iLock)
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return;
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if (m_pEdit)
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ResetEditAlignment();
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ResetTheme();
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Layout();
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}
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FWL_WidgetHit CFWL_ComboBox::HitTest(const CFX_PointF& point) {
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CFX_RectF rect(0, 0, m_pProperties->m_rtWidget.width - m_rtBtn.width,
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m_pProperties->m_rtWidget.height);
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if (rect.Contains(point))
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return FWL_WidgetHit::Edit;
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if (m_rtBtn.Contains(point))
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return FWL_WidgetHit::Client;
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if (IsDropListVisible()) {
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rect = m_pListBox->GetWidgetRect();
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if (rect.Contains(point))
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return FWL_WidgetHit::Client;
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}
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return FWL_WidgetHit::Unknown;
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}
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void CFWL_ComboBox::DrawWidget(CXFA_Graphics* pGraphics,
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const CFX_Matrix& matrix) {
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IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider.Get();
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pGraphics->SaveGraphState();
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pGraphics->ConcatMatrix(&matrix);
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if (!m_rtBtn.IsEmpty(0.1f)) {
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CFWL_ThemeBackground param;
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param.m_pWidget = this;
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param.m_iPart = CFWL_Part::DropDownButton;
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param.m_dwStates = m_iBtnState;
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param.m_pGraphics = pGraphics;
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param.m_rtPart = m_rtBtn;
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pTheme->DrawBackground(param);
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}
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pGraphics->RestoreGraphState();
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if (m_pEdit) {
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CFX_RectF rtEdit = m_pEdit->GetWidgetRect();
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CFX_Matrix mt(1, 0, 0, 1, rtEdit.left, rtEdit.top);
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mt.Concat(matrix);
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m_pEdit->DrawWidget(pGraphics, mt);
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}
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if (m_pListBox && IsDropListVisible()) {
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CFX_RectF rtList = m_pListBox->GetWidgetRect();
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CFX_Matrix mt(1, 0, 0, 1, rtList.left, rtList.top);
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mt.Concat(matrix);
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m_pListBox->DrawWidget(pGraphics, mt);
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}
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}
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void CFWL_ComboBox::SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) {
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if (!pThemeProvider)
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return;
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m_pProperties->m_pThemeProvider = pThemeProvider;
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if (m_pListBox)
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m_pListBox->SetThemeProvider(pThemeProvider);
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if (m_pEdit)
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m_pEdit->SetThemeProvider(pThemeProvider);
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}
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WideString CFWL_ComboBox::GetTextByIndex(int32_t iIndex) const {
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CFWL_ListItem* pItem = static_cast<CFWL_ListItem*>(
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m_pListBox->GetItem(m_pListBox.get(), iIndex));
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return pItem ? pItem->GetText() : WideString();
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}
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void CFWL_ComboBox::SetCurSel(int32_t iSel) {
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int32_t iCount = m_pListBox->CountItems(nullptr);
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bool bClearSel = iSel < 0 || iSel >= iCount;
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if (IsDropDownStyle() && m_pEdit) {
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if (bClearSel) {
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m_pEdit->SetText(WideString());
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} else {
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CFWL_ListItem* hItem = m_pListBox->GetItem(this, iSel);
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m_pEdit->SetText(hItem ? hItem->GetText() : WideString());
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}
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m_pEdit->Update();
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}
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m_iCurSel = bClearSel ? -1 : iSel;
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}
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void CFWL_ComboBox::SetStates(uint32_t dwStates) {
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if (IsDropDownStyle() && m_pEdit)
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m_pEdit->SetStates(dwStates);
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if (m_pListBox)
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m_pListBox->SetStates(dwStates);
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CFWL_Widget::SetStates(dwStates);
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}
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void CFWL_ComboBox::RemoveStates(uint32_t dwStates) {
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if (IsDropDownStyle() && m_pEdit)
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m_pEdit->RemoveStates(dwStates);
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if (m_pListBox)
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m_pListBox->RemoveStates(dwStates);
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CFWL_Widget::RemoveStates(dwStates);
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}
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void CFWL_ComboBox::SetEditText(const WideString& wsText) {
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if (!m_pEdit)
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return;
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m_pEdit->SetText(wsText);
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m_pEdit->Update();
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}
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WideString CFWL_ComboBox::GetEditText() const {
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if (m_pEdit)
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return m_pEdit->GetText();
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if (!m_pListBox)
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return WideString();
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CFWL_ListItem* hItem = m_pListBox->GetItem(this, m_iCurSel);
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return hItem ? hItem->GetText() : WideString();
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}
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void CFWL_ComboBox::OpenDropDownList(bool bActivate) {
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ShowDropList(bActivate);
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}
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CFX_RectF CFWL_ComboBox::GetBBox() const {
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CFX_RectF rect = m_pProperties->m_rtWidget;
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if (!m_pListBox || !IsDropListVisible())
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return rect;
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CFX_RectF rtList = m_pListBox->GetWidgetRect();
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rtList.Offset(rect.left, rect.top);
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rect.Union(rtList);
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return rect;
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}
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void CFWL_ComboBox::EditModifyStylesEx(uint32_t dwStylesExAdded,
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uint32_t dwStylesExRemoved) {
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if (m_pEdit)
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m_pEdit->ModifyStylesEx(dwStylesExAdded, dwStylesExRemoved);
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}
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void CFWL_ComboBox::ShowDropList(bool bActivate) {
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if (IsDropListVisible() == bActivate)
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return;
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if (bActivate) {
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CFWL_Event preEvent(CFWL_Event::Type::PreDropDown, this);
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DispatchEvent(&preEvent);
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if (!preEvent.GetSrcTarget())
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return;
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CFWL_ComboList* pComboList = m_pListBox.get();
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int32_t iItems = pComboList->CountItems(nullptr);
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if (iItems < 1)
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return;
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ResetListItemAlignment();
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pComboList->ChangeSelected(m_iCurSel);
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float fItemHeight = pComboList->CalcItemHeight();
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float fBorder = GetCXBorderSize();
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float fPopupMin = 0.0f;
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if (iItems > 3)
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fPopupMin = fItemHeight * 3 + fBorder * 2;
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float fPopupMax = fItemHeight * iItems + fBorder * 2;
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CFX_RectF rtList(m_rtClient.left, 0, m_pProperties->m_rtWidget.width, 0);
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GetPopupPos(fPopupMin, fPopupMax, m_pProperties->m_rtWidget, &rtList);
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m_pListBox->SetWidgetRect(rtList);
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m_pListBox->Update();
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}
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if (bActivate) {
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m_pListBox->RemoveStates(FWL_WGTSTATE_Invisible);
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CFWL_Event postEvent(CFWL_Event::Type::PostDropDown, this);
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DispatchEvent(&postEvent);
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} else {
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m_pListBox->SetStates(FWL_WGTSTATE_Invisible);
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}
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CFX_RectF rect = m_pListBox->GetWidgetRect();
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rect.Inflate(2, 2);
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RepaintRect(rect);
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}
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void CFWL_ComboBox::MatchEditText() {
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WideString wsText = m_pEdit->GetText();
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int32_t iMatch = m_pListBox->MatchItem(wsText.AsStringView());
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if (iMatch != m_iCurSel) {
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m_pListBox->ChangeSelected(iMatch);
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if (iMatch >= 0)
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SyncEditText(iMatch);
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} else if (iMatch >= 0) {
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m_pEdit->SetSelected();
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}
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m_iCurSel = iMatch;
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}
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void CFWL_ComboBox::SyncEditText(int32_t iListItem) {
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CFWL_ListItem* hItem = m_pListBox->GetItem(this, iListItem);
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m_pEdit->SetText(hItem ? hItem->GetText() : WideString());
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m_pEdit->Update();
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m_pEdit->SetSelected();
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}
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void CFWL_ComboBox::Layout() {
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m_rtClient = GetClientRect();
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m_rtContent = m_rtClient;
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IFWL_ThemeProvider* theme = GetAvailableTheme();
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if (!theme)
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return;
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float borderWidth = 1;
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float fBtn = theme->GetScrollBarWidth();
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if (!(GetStylesEx() & FWL_STYLEEXT_CMB_ReadOnly)) {
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m_rtBtn =
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CFX_RectF(m_rtClient.right() - fBtn, m_rtClient.top + borderWidth,
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fBtn - borderWidth, m_rtClient.height - 2 * borderWidth);
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}
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CFWL_ThemePart part;
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part.m_pWidget = this;
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CFX_RectF pUIMargin = theme->GetUIMargin(part);
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m_rtContent.Deflate(pUIMargin.left, pUIMargin.top, pUIMargin.width,
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pUIMargin.height);
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if (!IsDropDownStyle() || !m_pEdit)
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return;
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CFX_RectF rtEdit(m_rtContent.left, m_rtContent.top, m_rtContent.width - fBtn,
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m_rtContent.height);
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m_pEdit->SetWidgetRect(rtEdit);
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if (m_iCurSel >= 0) {
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CFWL_ListItem* hItem = m_pListBox->GetItem(this, m_iCurSel);
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ScopedUpdateLock update_lock(m_pEdit.get());
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m_pEdit->SetText(hItem ? hItem->GetText() : WideString());
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}
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m_pEdit->Update();
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}
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void CFWL_ComboBox::ResetTheme() {
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if (!m_pProperties->m_pThemeProvider)
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m_pProperties->m_pThemeProvider = GetAvailableTheme();
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IFWL_ThemeProvider* pTheme = m_pProperties->m_pThemeProvider.Get();
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if (m_pListBox && !m_pListBox->GetThemeProvider())
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m_pListBox->SetThemeProvider(pTheme);
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if (m_pEdit && !m_pEdit->GetThemeProvider())
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m_pEdit->SetThemeProvider(pTheme);
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}
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void CFWL_ComboBox::ResetEditAlignment() {
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if (!m_pEdit)
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return;
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uint32_t dwAdd = 0;
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switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_EditHAlignMask) {
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case FWL_STYLEEXT_CMB_EditHCenter: {
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dwAdd |= FWL_STYLEEXT_EDT_HCenter;
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break;
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}
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default: {
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dwAdd |= FWL_STYLEEXT_EDT_HNear;
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break;
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}
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}
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switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_EditVAlignMask) {
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case FWL_STYLEEXT_CMB_EditVCenter: {
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dwAdd |= FWL_STYLEEXT_EDT_VCenter;
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break;
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}
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case FWL_STYLEEXT_CMB_EditVFar: {
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dwAdd |= FWL_STYLEEXT_EDT_VFar;
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break;
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}
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default: {
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dwAdd |= FWL_STYLEEXT_EDT_VNear;
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break;
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}
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}
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if (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_EditJustified)
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dwAdd |= FWL_STYLEEXT_EDT_Justified;
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m_pEdit->ModifyStylesEx(dwAdd, FWL_STYLEEXT_EDT_HAlignMask |
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FWL_STYLEEXT_EDT_HAlignModeMask |
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FWL_STYLEEXT_EDT_VAlignMask);
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}
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void CFWL_ComboBox::ResetListItemAlignment() {
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if (!m_pListBox)
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return;
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uint32_t dwAdd = 0;
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switch (m_pProperties->m_dwStyleExes & FWL_STYLEEXT_CMB_ListItemAlignMask) {
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case FWL_STYLEEXT_CMB_ListItemCenterAlign: {
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dwAdd |= FWL_STYLEEXT_LTB_CenterAlign;
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break;
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}
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default: {
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dwAdd |= FWL_STYLEEXT_LTB_LeftAlign;
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break;
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}
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}
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m_pListBox->ModifyStylesEx(dwAdd, FWL_STYLEEXT_CMB_ListItemAlignMask);
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}
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void CFWL_ComboBox::ProcessSelChanged(bool bLButtonUp) {
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m_iCurSel = m_pListBox->GetItemIndex(this, m_pListBox->GetSelItem(0));
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if (!IsDropDownStyle()) {
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RepaintRect(m_rtClient);
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return;
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}
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CFWL_ListItem* hItem = m_pListBox->GetItem(this, m_iCurSel);
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if (!hItem)
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return;
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if (m_pEdit) {
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m_pEdit->SetText(hItem->GetText());
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m_pEdit->Update();
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m_pEdit->SetSelected();
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}
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CFWL_EventSelectChanged ev(this);
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ev.bLButtonUp = bLButtonUp;
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DispatchEvent(&ev);
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}
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void CFWL_ComboBox::InitComboList() {
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if (m_pListBox)
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return;
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auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>();
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prop->m_pParent = this;
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prop->m_dwStyles = FWL_WGTSTYLE_Border | FWL_WGTSTYLE_VScroll;
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prop->m_dwStates = FWL_WGTSTATE_Invisible;
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prop->m_pThemeProvider = m_pProperties->m_pThemeProvider;
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m_pListBox = pdfium::MakeUnique<CFWL_ComboList>(m_pOwnerApp.Get(),
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std::move(prop), this);
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}
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void CFWL_ComboBox::InitComboEdit() {
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if (m_pEdit)
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return;
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auto prop = pdfium::MakeUnique<CFWL_WidgetProperties>();
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prop->m_pParent = this;
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prop->m_pThemeProvider = m_pProperties->m_pThemeProvider;
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m_pEdit = pdfium::MakeUnique<CFWL_ComboEdit>(m_pOwnerApp.Get(),
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std::move(prop), this);
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m_pEdit->SetOuter(this);
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}
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void CFWL_ComboBox::OnProcessMessage(CFWL_Message* pMessage) {
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if (!pMessage)
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return;
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bool backDefault = true;
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switch (pMessage->GetType()) {
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case CFWL_Message::Type::SetFocus: {
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backDefault = false;
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OnFocusChanged(pMessage, true);
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break;
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}
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case CFWL_Message::Type::KillFocus: {
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backDefault = false;
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OnFocusChanged(pMessage, false);
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break;
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}
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case CFWL_Message::Type::Mouse: {
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backDefault = false;
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CFWL_MessageMouse* pMsg = static_cast<CFWL_MessageMouse*>(pMessage);
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switch (pMsg->m_dwCmd) {
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case FWL_MouseCommand::LeftButtonDown:
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OnLButtonDown(pMsg);
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break;
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case FWL_MouseCommand::LeftButtonUp:
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OnLButtonUp(pMsg);
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break;
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default:
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break;
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}
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break;
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}
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case CFWL_Message::Type::Key: {
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backDefault = false;
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CFWL_MessageKey* pKey = static_cast<CFWL_MessageKey*>(pMessage);
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if (pKey->m_dwCmd == FWL_KeyCommand::KeyUp)
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break;
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if (IsDropListVisible() && pKey->m_dwCmd == FWL_KeyCommand::KeyDown) {
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bool bListKey = pKey->m_dwKeyCode == XFA_FWL_VKEY_Up ||
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pKey->m_dwKeyCode == XFA_FWL_VKEY_Down ||
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pKey->m_dwKeyCode == XFA_FWL_VKEY_Return ||
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pKey->m_dwKeyCode == XFA_FWL_VKEY_Escape;
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if (bListKey) {
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m_pListBox->GetDelegate()->OnProcessMessage(pMessage);
|
|
break;
|
|
}
|
|
}
|
|
OnKey(pKey);
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
// Dst target could be |this|, continue only if not destroyed by above.
|
|
if (backDefault && pMessage->GetDstTarget())
|
|
CFWL_Widget::OnProcessMessage(pMessage);
|
|
}
|
|
|
|
void CFWL_ComboBox::OnProcessEvent(CFWL_Event* pEvent) {
|
|
CFWL_Event::Type type = pEvent->GetType();
|
|
if (type == CFWL_Event::Type::Scroll) {
|
|
CFWL_EventScroll* pScrollEvent = static_cast<CFWL_EventScroll*>(pEvent);
|
|
CFWL_EventScroll pScrollEv(this);
|
|
pScrollEv.m_iScrollCode = pScrollEvent->m_iScrollCode;
|
|
pScrollEv.m_fPos = pScrollEvent->m_fPos;
|
|
DispatchEvent(&pScrollEv);
|
|
} else if (type == CFWL_Event::Type::TextWillChange) {
|
|
CFWL_Event pTemp(CFWL_Event::Type::EditChanged, this);
|
|
DispatchEvent(&pTemp);
|
|
}
|
|
}
|
|
|
|
void CFWL_ComboBox::OnDrawWidget(CXFA_Graphics* pGraphics,
|
|
const CFX_Matrix& matrix) {
|
|
DrawWidget(pGraphics, matrix);
|
|
}
|
|
|
|
void CFWL_ComboBox::OnLButtonUp(CFWL_MessageMouse* pMsg) {
|
|
if (m_rtBtn.Contains(pMsg->m_pos))
|
|
m_iBtnState = CFWL_PartState_Hovered;
|
|
else
|
|
m_iBtnState = CFWL_PartState_Normal;
|
|
|
|
RepaintRect(m_rtBtn);
|
|
}
|
|
|
|
void CFWL_ComboBox::OnLButtonDown(CFWL_MessageMouse* pMsg) {
|
|
bool bDropDown = IsDropListVisible();
|
|
CFX_RectF& rtBtn = bDropDown ? m_rtBtn : m_rtClient;
|
|
if (!rtBtn.Contains(pMsg->m_pos))
|
|
return;
|
|
|
|
if (IsDropListVisible()) {
|
|
ShowDropList(false);
|
|
return;
|
|
}
|
|
if (m_pEdit)
|
|
MatchEditText();
|
|
ShowDropList(true);
|
|
}
|
|
|
|
void CFWL_ComboBox::OnFocusChanged(CFWL_Message* pMsg, bool bSet) {
|
|
if (bSet) {
|
|
m_pProperties->m_dwStates |= FWL_WGTSTATE_Focused;
|
|
if ((m_pEdit->GetStates() & FWL_WGTSTATE_Focused) == 0) {
|
|
CFWL_MessageSetFocus msg(nullptr, m_pEdit.get());
|
|
m_pEdit->GetDelegate()->OnProcessMessage(&msg);
|
|
}
|
|
} else {
|
|
m_pProperties->m_dwStates &= ~FWL_WGTSTATE_Focused;
|
|
ShowDropList(false);
|
|
CFWL_MessageKillFocus msg(m_pEdit.get());
|
|
m_pEdit->GetDelegate()->OnProcessMessage(&msg);
|
|
}
|
|
}
|
|
|
|
void CFWL_ComboBox::OnKey(CFWL_MessageKey* pMsg) {
|
|
uint32_t dwKeyCode = pMsg->m_dwKeyCode;
|
|
const bool bUp = dwKeyCode == XFA_FWL_VKEY_Up;
|
|
const bool bDown = dwKeyCode == XFA_FWL_VKEY_Down;
|
|
if (bUp || bDown) {
|
|
CFWL_ComboList* pComboList = m_pListBox.get();
|
|
int32_t iCount = pComboList->CountItems(nullptr);
|
|
if (iCount < 1)
|
|
return;
|
|
|
|
bool bMatchEqual = false;
|
|
int32_t iCurSel = m_iCurSel;
|
|
if (m_pEdit) {
|
|
WideString wsText = m_pEdit->GetText();
|
|
iCurSel = pComboList->MatchItem(wsText.AsStringView());
|
|
if (iCurSel >= 0) {
|
|
CFWL_ListItem* item = m_pListBox->GetSelItem(iCurSel);
|
|
bMatchEqual = wsText == (item ? item->GetText() : WideString());
|
|
}
|
|
}
|
|
if (iCurSel < 0) {
|
|
iCurSel = 0;
|
|
} else if (bMatchEqual) {
|
|
if ((bUp && iCurSel == 0) || (bDown && iCurSel == iCount - 1))
|
|
return;
|
|
if (bUp)
|
|
iCurSel--;
|
|
else
|
|
iCurSel++;
|
|
}
|
|
m_iCurSel = iCurSel;
|
|
SyncEditText(m_iCurSel);
|
|
return;
|
|
}
|
|
if (m_pEdit)
|
|
m_pEdit->GetDelegate()->OnProcessMessage(pMsg);
|
|
}
|
|
|
|
void CFWL_ComboBox::GetPopupPos(float fMinHeight,
|
|
float fMaxHeight,
|
|
const CFX_RectF& rtAnchor,
|
|
CFX_RectF* pPopupRect) {
|
|
m_pWidgetMgr->GetAdapterPopupPos(this, fMinHeight, fMaxHeight, rtAnchor,
|
|
pPopupRect);
|
|
}
|