145 lines
4.5 KiB
C++
145 lines
4.5 KiB
C++
#include "mainwindow.h"
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#include <QLineEdit>
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#include <QPainter>
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#include <QRandomGenerator>
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#include <QSplitter>
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#include <QVBoxLayout>
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#define GROUP_ITEMSCOUNT Qt::UserRole + 1
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#define GROUP_TITLE Qt::DisplayRole
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#define GROUP_COVER0 Qt::DecorationRole
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#define GROUP_COVER1 Qt::UserRole + 3
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#define GROUP_COVER2 Qt::UserRole + 4
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MainWindow::MainWindow(QWidget* parent)
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: QMainWindow(parent), groups_view(new QListView(this)),
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groups_list(new QStandardItemModel(this)), items_view(new QListView(this)),
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items_list(new QStandardItemModel(this))
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{
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groups_view->setModel(groups_list);
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items_view->setModel(items_list);
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// --------------------------
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auto splitter = new QSplitter(this);
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setCentralWidget(splitter);
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splitter->addWidget(groups_view);
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splitter->addWidget(items_view);
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groups_list->setHorizontalHeaderLabels(QStringList() << "数量"
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<< "名称");
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groups_view->setItemDelegate(new GroupDisplayDelegate);
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groups_view->setMovement(QListView::Free);
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init_groups_list(groups_list);
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}
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MainWindow::~MainWindow()
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{
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}
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void
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MainWindow::init_groups_list(QStandardItemModel* model)
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{
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model->removeRows(0, model->rowCount());
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QRandomGenerator gen;
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for (int idx = 0; idx < 200; ++idx) {
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QList<QStandardItem*> row;
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row << new QStandardItem("无名集合0");
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row.last()->setData(gen.generate() % 100, GROUP_ITEMSCOUNT);
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model->appendRow(row);
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}
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}
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GroupDisplayDelegate::GroupDisplayDelegate()
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: default_cover(new QIcon(":/imgs/default/cover.jpg"))
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{
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}
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GroupDisplayDelegate::~GroupDisplayDelegate()
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{
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delete default_cover;
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}
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QWidget*
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GroupDisplayDelegate::createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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auto font = option.font;
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font.setPointSize(26);
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auto ins = new QLineEdit(parent);
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ins->setFont(font);
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return ins;
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}
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void
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GroupDisplayDelegate::setEditorData(QWidget* editor, const QModelIndex& index) const
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{
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static_cast<QLineEdit*>(editor)->setText(index.data().toString());
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}
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void
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GroupDisplayDelegate::setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const
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{
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model->setData(index, static_cast<QLineEdit*>(editor)->text());
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}
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auto text_rect = [](const QRect& whole_rect, double font_height) -> QRectF {
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return QRectF(whole_rect.left() + 145, whole_rect.top() + 20, whole_rect.width() - 165, font_height);
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};
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void
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GroupDisplayDelegate::updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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QStyleOptionViewItem new_ = option;
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new_.font.setPointSize(26);
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new_.fontMetrics = QFontMetrics(new_.font);
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editor->setGeometry(text_rect(option.rect, new_.fontMetrics.height()).toRect());
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}
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void
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GroupDisplayDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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drawBackground(painter, option, index);
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auto cover0 = index.data(GROUP_COVER0);
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if (cover0.isNull())
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cover0 = default_cover->pixmap(QSize(100, 150));
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auto cover1 = index.data(GROUP_COVER1);
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if (cover1.isNull())
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cover1 = default_cover->pixmap(QSize(100, 150));
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auto cover2 = index.data(GROUP_COVER2);
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if (cover2.isNull())
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cover2 = default_cover->pixmap(QSize(100, 150));
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auto valid_rect = option.rect - QMargins(15, 15, 15, 15);
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auto pixmap1 = cover1.value<QPixmap>();
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QRectF rect1(valid_rect.left() + 60, valid_rect.top() + 20, 54, 80);
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painter->drawPixmap(rect1, pixmap1, QRectF(0, 0, 100, 150));
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auto pixmap2 = cover2.value<QPixmap>();
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QRectF rect2(valid_rect.left() + 34, valid_rect.top() + 10, 66, 100);
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painter->drawPixmap(rect2, pixmap2, QRectF(0, 0, 100, 150));
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auto pixmap0 = cover0.value<QPixmap>();
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QRectF rect0(valid_rect.left(), valid_rect.top(), 80, 120);
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painter->drawPixmap(rect0, pixmap0, QRectF(0, 0, 100, 150));
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QStyleOptionViewItem new_copy = option;
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new_copy.font.setPointSize(26);
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new_copy.fontMetrics = QFontMetrics(new_copy.font);
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drawDisplay(painter, new_copy, text_rect(option.rect, new_copy.fontMetrics.height()).toRect(), index.data().toString());
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new_copy.font.setPointSize(18);
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new_copy.fontMetrics = QFontMetrics(new_copy.font);
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drawDisplay(painter, new_copy, new_copy.rect - QMargins(160, 60, 0, 0), QString("总藏书：%1").arg(index.data(GROUP_ITEMSCOUNT).toUInt()));
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}
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QSize
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GroupDisplayDelegate::sizeHint(const QStyleOptionViewItem& option, const QModelIndex& index) const
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{
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return QSize(400, 145);
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}
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