mirror of
https://github.com/crystalidea/qt6windows7.git
synced 2024-11-23 12:07:03 +08:00
136 lines
3.5 KiB
C++
136 lines
3.5 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#include "informationwindow.h"
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#include "imageitem.h"
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#include "view.h"
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//! [0]
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View::View(const QString &items, const QString &images, QWidget *parent)
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: QGraphicsView(parent)
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{
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itemTable = new QSqlRelationalTableModel(this);
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itemTable->setTable(items);
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itemTable->setRelation(1, QSqlRelation(images, "itemid", "file"));
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itemTable->select();
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//! [0]
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//! [1]
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scene = new QGraphicsScene(this);
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scene->setSceneRect(0, 0, 465, 365);
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setScene(scene);
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addItems();
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setMinimumSize(470, 370);
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setMaximumSize(470, 370);
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QLinearGradient gradient(QPointF(0, 0), QPointF(0, 370));
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gradient.setColorAt(0, QColor("#868482"));
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gradient.setColorAt(1, QColor("#5d5b59"));
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setBackgroundBrush(gradient);
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}
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//! [1]
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//! [3]
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void View::addItems()
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{
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int itemCount = itemTable->rowCount();
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int imageOffset = 150;
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int leftMargin = 70;
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int topMargin = 40;
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for (int i = 0; i < itemCount; i++) {
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QSqlRecord record = itemTable->record(i);
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int id = record.value("id").toInt();
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QString file = record.value("file").toString();
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QString item = record.value("itemtype").toString();
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int columnOffset = ((i % 2) * 37);
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int x = ((i % 2) * imageOffset) + leftMargin + columnOffset;
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int y = ((i / 2) * imageOffset) + topMargin;
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ImageItem *image = new ImageItem(id, QPixmap(":/" + file));
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image->setData(0, i);
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image->setPos(x, y);
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scene->addItem(image);
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QGraphicsTextItem *label = scene->addText(item);
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label->setDefaultTextColor(QColor("#d7d6d5"));
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QPointF labelOffset((120 - label->boundingRect().width()) / 2, 120.0);
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label->setPos(QPointF(x, y) + labelOffset);
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}
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}
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//! [3]
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//! [5]
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void View::mouseReleaseEvent(QMouseEvent *event)
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{
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if (QGraphicsItem *item = itemAt(event->position().toPoint())) {
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if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item))
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showInformation(image);
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}
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QGraphicsView::mouseReleaseEvent(event);
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}
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//! [5]
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//! [6]
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void View::showInformation(ImageItem *image)
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{
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int id = image->id();
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if (id < 0 || id >= itemTable->rowCount())
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return;
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InformationWindow *window = findWindow(id);
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if (!window) {
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window = new InformationWindow(id, itemTable, this);
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connect(window, QOverload<int,const QString &>::of(&InformationWindow::imageChanged),
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this, QOverload<int,const QString &>::of(&View::updateImage));
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window->move(pos() + QPoint(20, 40));
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window->show();
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informationWindows.append(window);
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}
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if (window->isVisible()) {
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window->raise();
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window->activateWindow();
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} else
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window->show();
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}
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//! [6]
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//! [7]
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void View::updateImage(int id, const QString &fileName)
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{
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QList<QGraphicsItem *> items = scene->items();
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while(!items.empty()) {
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QGraphicsItem *item = items.takeFirst();
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if (ImageItem *image = qgraphicsitem_cast<ImageItem *>(item)) {
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if (image->id() == id){
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image->setPixmap(QPixmap(":/" +fileName));
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image->adjust();
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break;
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}
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}
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}
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}
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//! [7]
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//! [8]
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InformationWindow *View::findWindow(int id) const
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{
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for (auto window : informationWindows) {
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if (window && (window->id() == id))
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return window;
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}
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return nullptr;
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}
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//! [8]
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