Qt之QComboBox定制（二）

#include "stdafx.h" #include "CustomPopupComboBox.h" bool CCheckBoxItem::hitButton(const QPoint & pos) const { return true; } CComboBox::CComboBox(CustomPopupComboBox::ItemType type, QWidget * parent /*= nullptr*/) : QWidget(parent) , m_Type(type) { InitializeUI(); } void CComboBox::SetSeparatorSymbol(char symbol) { if (m_SeparatorSymbol != symbol && m_Type == CustomPopupComboBox::CheckBoxItem) { QString currentText = m_ComboBox->currentText(); currentText.replace(m_SeparatorSymbol, symbol); m_SeparatorSymbol = symbol; } } void CComboBox::AddText(const QString & text) { AddItem(text); } void CComboBox::AddTexts(const QVector<QString> & items) { for (auto itemItor = items.begin(); itemItor != items.end(); ++itemItor) { AddItem(*itemItor); } } void CComboBox::SetItemWidth(int width) { m_ItemWidth = width; m_ComboBox->view()->setFixedWidth(m_ItemWidth); ResetItemWidth(width); } void CComboBox::SetItemHeight(int height) { m_ItemWidth = height; ResetItemHeight(height); } void CComboBox::SetMaxVisibleCount(int count) { } bool CComboBox::eventFilter(QObject * object, QEvent * event) { if (QMouseEvent * mouseEvent = static_cast<QMouseEvent *>(event)) { if (mouseEvent->type() == QEvent::MouseButtonPress) { if (QLabel * label = dynamic_cast<QLabel *>(object)) { QString text = label->text(); m_ComboBox->setCurrentText(text); return true; } } } return QWidget::eventFilter(object, event); } QWidget * CComboBox::NewItem(const QString & text) { QWidget * item; switch (m_Type) { case CustomPopupComboBox::LabelItem: { QPushButton * pushButton = new QPushButton(text); connect(pushButton, &QPushButton::clicked, this, [this](){ if (QPushButton * item = dynamic_cast<QPushButton *>(this->sender())) { QString text = item->text(); if (text.isEmpty()) { return; } static QPushButton * oldButton = nullptr; if (oldButton) { oldButton->setChecked(false); } oldButton = item; m_ComboBox->setCurrentText(text); item->setCheckable(true); item->setChecked(true); } }); item = pushButton; } break; case CustomPopupComboBox::RadioItem: { CRadioButtonItem * radioButton = new CRadioButtonItem(text); connect(radioButton, &QRadioButton::clicked, this, [this](bool checked){ if (checked) { if (QRadioButton * item = dynamic_cast<QRadioButton *>(this->sender())) { QString text = item->text(); if (text.isEmpty()) { return; } m_ComboBox->setCurrentText(text); } } }); item = radioButton; } break; case CustomPopupComboBox::CheckBoxItem: { CCheckBoxItem * checkBox = new CCheckBoxItem(text); checkBox->setFocus(); connect(checkBox, &QCheckBox::clicked, this, [this]{ if (QCheckBox * item = dynamic_cast<QCheckBox *>(this->sender())) { QString text = item->text(); if (text.isEmpty()) { return; } if (m_BottomWidget == nullptr || m_BottomWidget->isHidden()) { text = m_ComboBox->currentText(); } else { text = m_CurrentMemory; } if (text.isEmpty() == false) { if (item->isChecked()) { if (text.split("|").indexOf(item->text()) == -1) { text.append("|" + item->text()); } } else { text.remove("|" + item->text()); text.remove(item->text()); if (text.size() != 0 && text.at(0) == '|') { text.remove(0, 1); } } } else { if (item->isChecked()) { text.append(item->text()); } } if (m_BottomWidget == nullptr || m_BottomWidget->isHidden()) { m_ComboBox->setCurrentText(text); } else { m_CurrentMemory = text; } } }); item = checkBox; } break; default: break; } return item; } void CComboBox::InitializeUI() { QVBoxLayout * mainLayout = new QVBoxLayout; mainLayout->setMargin(0); mainLayout->setSpacing(0); m_ComboBox = new QComboBox(this); m_ComboBox->setMaxVisibleItems(100); if (QWidget * parent = m_ComboBox->view()->parentWidget()) { parent->setAttribute(Qt::WA_TranslucentBackground); parent->setWindowFlags(Qt::Popup | Qt::FramelessWindowHint); //取消弹框阴影 HWND hwnd = reinterpret_cast<HWND>(parent->winId()); DWORD class_style = ::GetClassLong(hwnd, GCL_STYLE); class_style &= ~CS_DROPSHADOW; ::SetClassLong(hwnd, GCL_STYLE, class_style); // windows系统函数 } mainLayout->addWidget(m_ComboBox); setLayout(mainLayout); } CListPopupComboBox::CListPopupComboBox(CustomPopupComboBox::ItemType type, QWidget * parent) : CComboBox(type, parent) { ConstructView(); m_ComboBox->view()->setFixedWidth(m_ItemWidth); setStyleSheet(QString( "QComboBox QAbstractItemView::item{height:45px;background:transparent;}" //下拉选项高度 "QComboBox QAbstractItemView::item:hover{height:145px;}" //下拉选项高度 //background-color:red; "QComboBox::down-arrow{background:#34752;}" //下拉箭头image:url(:/combobox/Resources/icon1.jpg); "QComboBox::drop-down{border:1 solid red;}" "QWidget#PopupWidgetBottom{background:gray;}" "QComboBox QAbstractItemView {selection-background-color: transparent;}"//background:transparent; "QComboBox{min-height:20px;border:1 solid #BBBBBB;border-radius:5px;}" "QRadioButton{ padding-left:10px;}" "QCheckBox{ padding-left:10px;}" "QLabel{ padding-left:10px;}" "QPushButton{text-align: left;background:transparent;padding-left:10px;}" "QListWidget{margin-top:0px;}")); //下拉按钮 } CListPopupComboBox::~CListPopupComboBox() { } bool CListPopupComboBox::eventFilter(QObject * watched, QEvent * event) { if (m_BottomWidget && m_BottomWidget == watched) { if (QMouseEvent * mouseEvent = static_cast<QMouseEvent *>(event)) { if (mouseEvent->type() == QEvent::MouseButtonPress || mouseEvent->type() == QEvent::MouseButtonRelease) { return true; } } } return QWidget::eventFilter(watched, event); } void CListPopupComboBox::AddItem(const QString & text) { if (QListWidget * listWidget = dynamic_cast<QListWidget *>(m_PopupWidget)) { QWidget * itemWidget = NewItem(text); //itemWidget->setStyleSheet(QString("QCheckBox {background-color:lightgray;}" // "QCheckBox:checked{background-color:white;}")); itemWidget->setFixedSize(m_ItemWidth, m_ItemHeight); int pos = listWidget->count() - 1 < 0 ? 0 : listWidget->count() - 1; listWidget->insertItem(pos, new QListWidgetItem()); listWidget->setItemWidget(listWidget->item(pos), itemWidget); } } void CListPopupComboBox::ResetItemWidth(int width) { if (QListWidget * listWidget = dynamic_cast<QListWidget *>(m_PopupWidget)) { for (int i = 0; i < listWidget->count(); ++i) { if (QWidget * w = listWidget->itemWidget(listWidget->item(i))) { w->setFixedWidth(width); } } } } void CListPopupComboBox::ResetItemHeight(int height) { if (QListWidget * listWidget = dynamic_cast<QListWidget *>(m_PopupWidget)) { for (int i = 0; i < listWidget->count(); ++i) { if (QWidget * w = listWidget->itemWidget(listWidget->item(i))) { w->setFixedHeight(height); } } } } void CListPopupComboBox::ConstructView() { m_PopupWidget = new QListWidget; QListWidget * listWidget; if ((listWidget = dynamic_cast<QListWidget *>(m_PopupWidget)) == nullptr) { return; } listWidget->setViewMode(QListView::ListMode); #ifndef ImmediateShow m_BottomWidget = new QWidget; QHBoxLayout * bottomLayout = new QHBoxLayout; QPushButton * okPushButton = new QPushButton; m_BottomWidget->setObjectName(QStringLiteral("PopupWidgetBottom")); connect(okPushButton, &QPushButton::clicked, th